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How Copper is Mined and Refined: "A Story Of Copper" 1951 US Bureau of Mines
 
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Support this channel: https://www.patreon.com/jeffquitney more at http://scitech.quickfound.net/geology_news_and_links.html "Tells the story of the mining and manufacture of copper from the crude ore to the finished product. lots of footage of giant machines, some blasting." Originally a public domain film, slightly cropped to remove uneven edges, with the aspect ratio corrected, and mild video noise reduction applied. The soundtrack was also processed with volume normalization, noise reduction, clipping reduction, and/or equalization (the resulting sound, though not perfect, is far less noisy than the original). https://en.wikipedia.org/wiki/Copper_extraction_techniques Wikipedia license: http://creativecommons.org/licenses/by-sa/3.0/ Copper extraction techniques refers to the methods for obtaining copper from its ores. The conversion of copper consists of a series of chemical, physical, and electrochemical processes. Methods have evolved and vary with country depending on the ore source, local environmental regulations, and other factors. As in all mining operations, the ore must usually be beneficiated (concentrated). To do this, the ore is crushed. Then it must be roasted to convert sulfides to oxides, which are smelted to produce matte. Finally, it undergoes various refining processes, the final one being electrolysis. For economic and environmental reasons, many of the byproducts of extraction are reclaimed. Sulfur dioxide gas, for example, is captured and turned into sulfuric acid — which is then used in the extraction process... History The earliest evidence of cold-hammering of native copper comes from the excavation at Çaÿonü Tepesi in eastern Anatolia. The radiocarbon date is 7250 ± 250 BCE. Among the various items considered to be votive or amulets there was one that looked like a fishhook and one like an awl. An archaeological site in southeastern Europe (Serbia) contains the oldest securely dated evidence of copper making at high temperature, from 7,000 years ago. The find in June 2010 extends the known record of copper smelting by about 500 years, and suggests that copper smelting may have been invented in separate parts of Asia and Europe at that time rather than spreading from a single source. Copper smelting technology gave rise to the Copper Age and then the Bronze Age. Concentration Most copper ores contain only a small percentage of copper metal bound up within valuable ore minerals, with the remainder of the ore being unwanted rock or gangue minerals, typically silicate minerals or oxide minerals for which there is often no value. The average grade of copper ores in the 21st century is below 0.6% copper, with a proportion of economic ore minerals (including copper) being less than 2% of the total volume of the ore rock. A key objective in the metallurgical treatment of any ore is the separation of ore minerals from gangue minerals within the rock. The first stage of any process within a metallurgical treatment circuit is accurate grinding or comminution, where the rock is crushed to produce small particles... Subsequent steps depend on the nature of the ore containing the copper. For oxide ores, a hydrometallurgical liberation process is normally undertaken, which uses the soluble nature of the ore minerals to the advantage of the metallurgical treatment plant. For sulfide ores, both secondary (supergene) and primary (hypogene), froth flotation is used to physically separate ore from gangue. For special native copper bearing ore bodies or sections of ore bodies rich in supergene native copper, this mineral can be recovered by a simple gravity circuit... Until the latter half of the 20th century, smelting sulfide ores was almost the sole means of producing copper metal from mined ores (primary copper production)... The copper is refined by electrolysis. The anodes cast from processed blister copper are placed into an aqueous solution of 3–4% copper sulfate and 10–16% sulfuric acid. Cathodes are thin rolled sheets of highly pure copper or, more commonly these days, reusable stainless steel starting sheets (as in the IsaKidd process). A potential of only 0.2–0.4 volts is required for the process to commence. At the anode, copper and less noble metals dissolve. More noble metals such as silver, gold, selenium, and tellurium settle to the bottom of the cell as anode slime, which forms a salable byproduct. Copper(II) ions migrate through the electrolyte to the cathode. At the cathode, copper metal plates out, but less noble constituents such as arsenic and zinc remain in solution unless a higher voltage is used. The reactions are: At the anode: Cu(s) → Cu2+(aq) + 2e− At the cathode: Cu2+(aq) + 2e− → Cu(s)...
Views: 78114 Jeff Quitney
PROCESSING COPPER ORE IN  KITWE ZAMBIA
 
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Mopani Copper Mines Mopani Copper Mines Plc (Mopani) is a joint venture company based in Kitwe as 95% of its operations are located there, comprising Glencore International AG (73.1%), First Quantum Minerals Ltd. (16.9%) and Zambian Consolidated Copper Mines Limited (10%). Mopani operates the Mufulira mine, smelter, concentrator and copper refinery and the Nkana mine, concentrator and cobalt plant. MCM produced 134,800 tons of copper and 2,040 tons of cobalt in 2003. MCM is investing in a number of oxide copper projects at several of its properties, including an in-situ leaching project at Mufulira and heap leaching at Nkana, and has achieved significant production increases at its underground mining operations in Kitwe and Mufulira. Copper production from internal sources was supplemented by the purchase of some 18,000 tons of copper in high-grade oxide concentrate bought from the Democratic Republic of the Congo. Nkana Mine Nkana mine is one of the largest in Africa, a copper mine located 1 km south-west of Kitwe. The mine is underground as well as open pit and is in operation since 1932 and has produced 6,000,000 tons of copper so far. Its reserves underground include 69,000,000 tons of grading, 16,000,000 tons of copper, and 98,000 tons of cobalt. Its resources include 126,000,000 tons of grading, 43,000,000 tons of copper, and 300,000 tons of cobalt. Copper and cobalt mineralisation occur within the ore shale. Copper mineralisation in the deposits changes from mostly chalcopyrite in the South Orebody, to chalcopyrite-bornite in the Central area and to bornite-chalcopyrite at Mindola. Cobalt occurs as carrollite and cobaltiferous pyrite in approximately equal proportions. The mine produces copper and cobalt from three sources: Mindola Shaft, Central Shaft and South Orebody Shaft. Vertical crater retreat is the predominant mining method while sublevel open-stopping and sublevel caving methods are also used. Other metallurgical facilities, under a management contract by an affiliate of the Anglo American Group, include the Nkana smelter (not owned by Mopani), acid plant (not owned by Mopani) and copper refinery (not owned by Mopani). There is extensive mine tailings around this mine. Nkana Concentrator Nkana Concentrator of Mopani mines, located in Kitwe, treats copper-cobalt sulphide ore using a bulk flotation and segregation flotation flowsheet to produce separate copper and cobalt concentrates. Nkana Concentrator is the most important mineral processing unit of Mopani, as it contributes about 65% of cobalt concentrates treated at the Nkana and Chambeshi Cobalt plants to produce high purity cobalt metal. Konkola Copper Mine Konkola Copper Mine (KCM) is the largest copper mining company in the country. Although based in Chingola, 15% of its operations—namely Nkana Refinery, Nkana Acid Plants and Nkana Smelter (the largest smelter in the nation) -- are located in Kitwe. The Nkana Smelter is the largest primary copper production plant in Zambia. The plant treats concentrates mainly from Nkana, Nchanga, and Konkola mines, which are wholly owned by KCM to produce up to 150,000 tons of new copper. Nkana Smelter The smelter produces high grade anodes, which are electrolytically refined. Sulphur dioxide gas produced by the converters is converted into sulphuric acid which is then used at the Tailings Leach Plant in Nchanga for recovering oxide copper. The smelter also produces discard slag from the reverbs that is rich in cobalt which is stored for future reclamation. This smelter was part of the Konkola Copper Mine's operation at privatisation and has subsequently closed. Nkana Refinery The Nkana Copper Refinery produces electrolytically refined copper in the form of cathodes. The copper meets the LME premium quality grade. The tankhouse has a capacity of about 180,000 tons of finished copper per annum. Nkana Acid Plants There are two single contact sulphuric acid plants at Smelterco, namely the No.3 and No.4 plants. No.3, the largest, is still operational. The plant has a design capacity of 1,050 tons of acid per day. FROM http://en.wikipedia.org/wiki/Mining_in_Zambia
Views: 39323 Donald Pugh
Copper Production in Kitwe Zambia 2011a
 
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Mopani Copper Mines Mopani Copper Mines Plc (Mopani) is a joint venture company based in Kitwe as 95% of its operations are located there, comprising Glencore International AG (73.1%), First Quantum Minerals Ltd. (16.9%) and Zambian Consolidated Copper Mines Limited (10%). Mopani operates the Mufulira mine, smelter, concentrator and copper refinery and the Nkana mine, concentrator and cobalt plant. MCM produced 134,800 tons of copper and 2,040 tons of cobalt in 2003. MCM is investing in a number of oxide copper projects at several of its properties, including an in-situ leaching project at Mufulira and heap leaching at Nkana, and has achieved significant production increases at its underground mining operations in Kitwe and Mufulira. Copper production from internal sources was supplemented by the purchase of some 18,000 tons of copper in high-grade oxide concentrate bought from the Democratic Republic of the Congo. Nkana Mine Nkana mine is one of the largest in Africa, a copper mine located 1 km south-west of Kitwe. The mine is underground as well as open pit and is in operation since 1932 and has produced 6,000,000 tons of copper so far. Its reserves underground include 69,000,000 tons of grading, 16,000,000 tons of copper, and 98,000 tons of cobalt. Its resources include 126,000,000 tons of grading, 43,000,000 tons of copper, and 300,000 tons of cobalt. Copper and cobalt mineralisation occur within the ore shale. Copper mineralisation in the deposits changes from mostly chalcopyrite in the South Orebody, to chalcopyrite-bornite in the Central area and to bornite-chalcopyrite at Mindola. Cobalt occurs as carrollite and cobaltiferous pyrite in approximately equal proportions. The mine produces copper and cobalt from three sources: Mindola Shaft, Central Shaft and South Orebody Shaft. Vertical crater retreat is the predominant mining method while sublevel open-stopping and sublevel caving methods are also used. Other metallurgical facilities, under a management contract by an affiliate of the Anglo American Group, include the Nkana smelter (not owned by Mopani), acid plant (not owned by Mopani) and copper refinery (not owned by Mopani). There is extensive mine tailings around this mine. Nkana Concentrator Nkana Concentrator of Mopani mines, located in Kitwe, treats copper-cobalt sulphide ore using a bulk flotation and segregation flotation flowsheet to produce separate copper and cobalt concentrates. Nkana Concentrator is the most important mineral processing unit of Mopani, as it contributes about 65% of cobalt concentrates treated at the Nkana and Chambeshi Cobalt plants to produce high purity cobalt metal. Konkola Copper Mine Konkola Copper Mine (KCM) is the largest copper mining company in the country. Although based in Chingola, 15% of its operations—namely Nkana Refinery, Nkana Acid Plants and Nkana Smelter (the largest smelter in the nation) -- are located in Kitwe. The Nkana Smelter is the largest primary copper production plant in Zambia. The plant treats concentrates mainly from Nkana, Nchanga, and Konkola mines, which are wholly owned by KCM to produce up to 150,000 tons of new copper. Nkana Smelter The smelter produces high grade anodes, which are electrolytically refined. Sulphur dioxide gas produced by the converters is converted into sulphuric acid which is then used at the Tailings Leach Plant in Nchanga for recovering oxide copper. The smelter also produces discard slag from the reverbs that is rich in cobalt which is stored for future reclamation. This smelter was part of the Konkola Copper Mine's operation at privatisation and has subsequently closed. Nkana Refinery The Nkana Copper Refinery produces electrolytically refined copper in the form of cathodes. The copper meets the LME premium quality grade. The tankhouse has a capacity of about 180,000 tons of finished copper per annum. Nkana Acid Plants There are two single contact sulphuric acid plants at Smelterco, namely the No.3 and No.4 plants. No.3, the largest, is still operational. The plant has a design capacity of 1,050 tons of acid per day. FROM http://en.wikipedia.org/wiki/Mining_in_Zambia
Views: 9261 Donald Pugh
Copper Mining Profits Fail Zambians 2011a
 
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Mopani Copper Mines Mopani Copper Mines Plc (Mopani) is a joint venture company based in Kitwe as 95% of its operations are located there, comprising Glencore International AG (73.1%), First Quantum Minerals Ltd. (16.9%) and Zambian Consolidated Copper Mines Limited (10%). Mopani operates the Mufulira mine, smelter, concentrator and copper refinery and the Nkana mine, concentrator and cobalt plant. MCM produced 134,800 tons of copper and 2,040 tons of cobalt in 2003. MCM is investing in a number of oxide copper projects at several of its properties, including an in-situ leaching project at Mufulira and heap leaching at Nkana, and has achieved significant production increases at its underground mining operations in Kitwe and Mufulira. Copper production from internal sources was supplemented by the purchase of some 18,000 tons of copper in high-grade oxide concentrate bought from the Democratic Republic of the Congo. Nkana Mine Nkana mine is one of the largest in Africa, a copper mine located 1 km south-west of Kitwe. The mine is underground as well as open pit and is in operation since 1932 and has produced 6,000,000 tons of copper so far. Its reserves underground include 69,000,000 tons of grading, 16,000,000 tons of copper, and 98,000 tons of cobalt. Its resources include 126,000,000 tons of grading, 43,000,000 tons of copper, and 300,000 tons of cobalt. Copper and cobalt mineralisation occur within the ore shale. Copper mineralisation in the deposits changes from mostly chalcopyrite in the South Orebody, to chalcopyrite-bornite in the Central area and to bornite-chalcopyrite at Mindola. Cobalt occurs as carrollite and cobaltiferous pyrite in approximately equal proportions. The mine produces copper and cobalt from three sources: Mindola Shaft, Central Shaft and South Orebody Shaft. Vertical crater retreat is the predominant mining method while sublevel open-stopping and sublevel caving methods are also used. Other metallurgical facilities, under a management contract by an affiliate of the Anglo American Group, include the Nkana smelter (not owned by Mopani), acid plant (not owned by Mopani) and copper refinery (not owned by Mopani). There is extensive mine tailings around this mine. Nkana Concentrator Nkana Concentrator of Mopani mines, located in Kitwe, treats copper-cobalt sulphide ore using a bulk flotation and segregation flotation flowsheet to produce separate copper and cobalt concentrates. Nkana Concentrator is the most important mineral processing unit of Mopani, as it contributes about 65% of cobalt concentrates treated at the Nkana and Chambeshi Cobalt plants to produce high purity cobalt metal. Konkola Copper Mine Konkola Copper Mine (KCM) is the largest copper mining company in the country. Although based in Chingola, 15% of its operations—namely Nkana Refinery, Nkana Acid Plants and Nkana Smelter (the largest smelter in the nation) -- are located in Kitwe. The Nkana Smelter is the largest primary copper production plant in Zambia. The plant treats concentrates mainly from Nkana, Nchanga, and Konkola mines, which are wholly owned by KCM to produce up to 150,000 tons of new copper. Nkana Smelter The smelter produces high grade anodes, which are electrolytically refined. Sulphur dioxide gas produced by the converters is converted into sulphuric acid which is then used at the Tailings Leach Plant in Nchanga for recovering oxide copper. The smelter also produces discard slag from the reverbs that is rich in cobalt which is stored for future reclamation. This smelter was part of the Konkola Copper Mine's operation at privatisation and has subsequently closed. Nkana Refinery The Nkana Copper Refinery produces electrolytically refined copper in the form of cathodes. The copper meets the LME premium quality grade. The tankhouse has a capacity of about 180,000 tons of finished copper per annum. Nkana Acid Plants There are two single contact sulphuric acid plants at Smelterco, namely the No.3 and No.4 plants. No.3, the largest, is still operational. The plant has a design capacity of 1,050 tons of acid per day. FROM http://en.wikipedia.org/wiki/Mining_in_Zambia
Views: 3615 Donald Pugh
Chemistry Teacher | Metallurgy of Lead | Ores, Extraction, Concentration and Smelting
 
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Different stages in Metallurgy of Lead as follows Ores 1. Galena PbS 2. Cerrusite PbCO3 3. Anglesite PbSO4 4. Lead ochre PbO Extraction: Lead is mainly extracted from the sulphide ore galena. Galena contains lead sulphide and small quantities of silver. Concentration: The ore is concentrated by froth floatation process. Let us know about froth floatation process. In this process the powdered ore is mixed with water and a little pine oil that is a foaming agent and a whole mixture is then stir vigorously by blowing compressed air. The oil forms a foam or forth with the air. The ore particles stick to the froth which rises to the surface. While the rocky and earthy impurities that is the gangue or matrix left in the water. The froth is skimmed of collected and allow to subside to get a concentrated ore. Smelting in a Reverberatory furnace: The concentrated ore is roasted in a reverberatory furnace at a moderate temperature. The temperature of furnace is controlled by regulating the air supply. During roasting, galena is partly oxidized to lead monoxide and partly to lead sulphate. Lead sulphide plus oxygen gives Lead oxide plus sulphur Dioxide. Lead sulphide plus oxygen gives Lead sulphate. More of galena is then added. The temperature is raised and simultaneously the air supply is reduced. Lead sulphide reacts with the two oxidised products giving lead. Lead sulphide plus Lead oxide gives Lead plus sulphur Dioxide. Lead sulphide plus Lead sulphate gives Lead plus sulphur Dioxide. Thus in this process roasting and smelting are carried out in the same furnace, at two different temperatures. About 90% of lead is obtained as metal, the rest passes into slag. Lead is recovered from the slag by heating with lime and powdered coke.
Views: 1471 Easy Tips 4 Learner
Ruling due on cleanup extension for US-owned smelter
 
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SHOTLIST 1. Wide shot of La Oroya town with smoke billowing from an industrial chimney in the background 2. Various of chimney 3. Various of people at the main street 4. Woman with child going up the hill 5. SOUNDBITE (Spanish) Edith Rodrigo, Local resident: "I feel very sad because my baby here has got 73-80 (microgrammes) of lead in his blood. And I don't know, I guess it's because we live here at the very front (of the metal smelter) and when the smoke descends it makes us cough." 6. Child looking through window 7. SOUNDBITE (Spanish) Maria Mamani, Local resident: " Yes, yes we have all the same cough, we are all, everything is contaminated because of the smoke." 8. Woman with child 9. Set up of Doctor Jesus Diaz Matos 10. SOUNDBITE (Spanish) Jesus Diaz Matos, Head of Children's Medical Unit in La Oroya: "They said that the ideal for a child is to have less that 10 microgrammes of lead in one decilitre of blood. We have found in the majority of children, in almost the 100 percent, that they were above that level. They were different levels, between 10 and 20 microgrammes, between 20 and 40 microgrammes, between 40 and 60 microgrammes and even some with more that 70 microgrammes." 11. Cutaway of Diaz Matos 12. SOUNDBITE (Spanish) Jesus Diaz Matos, Head of Children's Medical Unit in La Oroya: "Evidently this is the reality, a reality not accepted by many people but that is going to continue for a while." 13. Various of the sulphuric acid treatment plant STORYLINE Peru's government is expected to decide next week whether to grant a US company's request for a three-year grace period to complete a sulfuric acid treatment plant in the Andean community of La Oroya which would lower sulfur dioxide emissions. The facility produces copper, lead, zinc and smaller amounts of gold, silver and other metals - emitting a dusty cloud containing lead, sulfur dioxide, cadmium and arsenic into the sky in the process. The St Louis-based Doe Run Company had agreed to improve the 82-year-old smelter when it bought the plant in 1997 from state-owned Centromin, which ran the plant from 1974. However, in late 2004, the company threatened to close its operations in La Oroya - about 140 kilometres (90 miles) east of the capital of Lima - if the government did not grant more time to complete environmental upgrades. Peru gave in, but said in February that any extension for the company would not exceed three years. Doe Run had hoped for at least four, saying it needed more time and that the environmental upgrades would cost nearly twice its original commitment. The latest extension request by the US company caused a heated debate in Peru, with environmental groups and several lawmakers leaning heavily on regulators to deny the extension. Many residents _ including La Oroya's mayor _ support a time extension, fearful of driving away the company and its jobs. They point to a study carried out in 2004 by the company and health authorities that show that more than 99 percent of nearly 800 children aged six and under living near the smelter have blood lead levels that still exceed international standards. Doctor Jesus Diaz Matos, who is the head of the Children's Medical Unit in La Oroya, said some of the people he had examined had up to "70 microgrammes of lead" per decilitre of blood. The World Health Organisation accepts up to 10 microgrammes of lead per decilitre of blood. Last December, a team from the Saint Louis University School of Public Health found that cadmium, known to cause kidney failure and lung and prostate cancer, was six times higher than normal US levels. Elevated levels of antimony, arsenic, caesium and other toxic substances also were found in the bodies of La Oroya's residents, their study found. You can license this story through AP Archive: http://www.aparchive.com/metadata/youtube/290e38abc946354652fe35ccafd72253 Find out more about AP Archive: http://www.aparchive.com/HowWeWork
Views: 44 AP Archive
10 MOST TOXIC Places On Earth
 
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From the DIRTIEST Cities, to nuclear wastelands ; these are the 10 MOST TOXIC Places On Earth. HEY YOU ! There are more awesome videos being made every week, like and subscribe to World Unearthed so you don't miss a beat ! 10.La Oroya | Peru 9.Dhaka | Bangladesh 8. Norilsk | Russia The city has been branded as the most polluted city in Russia, where the snow is black, air tastes like sulfur and rivers run red. Life expectancy of employees in the smelter is 10 years below the Russian average. By some estimates, 1% of the world`s sulfur dioxide emission comes from the Norilsk nickel mines. Nearly 500 tons of copper and nickel as well as two million tons of sulfur dioxide are released into the air, annually. In 2016 the nearby Daldykan River turned red and the evidence pointed to privately owned wastewater pipes. The company accepted the responsibility while claiming that the coloring was of no danger to humans or wildlife. The smelting plant was in the process of being modernized and steps are being taken in order to reduce pollution. 7.Nevada Proving Grounds | Nevada Nevada Proving Grounds, now known as the Nevada Test Site or Nevada National Security Site is a U. S. Department of Energy reservation in Nye County, Nevada, 65 miles northwest from Las Vegas. The tests stopped in 1994 but the area is still extremely radioactive. Even though the radioactivity in the water is gradually declining, isotopes like plutonium and uranium could pose risks to workers or future settlers on the NNSS for tens of thousands of years. 6.Shanghai | China In December of 2013, Shanghai suffered a great spike in air pollution when the so called “2013 Eastern China Smog” occurred. The pollution levels were between 23 and 31 times the international standard. Nearly one-third of all government vehicles were pulled off the streets, construction work was halted, student`s outdoor activities were suspended, flights were cancelled or diverted. And even though air pollution in Shanghai is substantial by the world standard, it is still lower than other cities in China. Among the top 500 most polluted cities in the world, Chinese cities hold 179 spots. Thankfully, China is taking extremely serious measures to reduce pollution, closing coal factories, smelters and mills while switching over to more eco-friendly energy sources. 5.Northwest Arctic | Alaska Out of all the states in the union, Alaska produces the most toxins, outranking every other state by nearly 3 times. A closer look reveals that 91% of all of Alaska`s emissions come from one county, Northwest Arctic, most of it originating from one city – Kotzebue, population 7,500. So how is it possible that a tiny city, in the middle of nowhere Alaska is responsible for so much pollution? Well, just 90 miles from Kotzebue is Red Dog Mine, the largest source of zinc in the world. It was established in 1987 and each year, it releases 756 million pounds of toxins into the environment. 4.Asse II mine | Germany The Asse II mine opened between 1906, initially extracting potash (until 1925) and producing rock salt (1916-1964). But during the period between 1964 and 1995 the mine was used as a storage of radioactive waste. Now, this mine has been abandoned, with barrels of low-level and medium-level waste in a jumbled heap, some of it not even contained properly. There`s fears that the mine could fill with water and authorities are rushing to remove the waste with remotely operated vehicles since it is unsafe for workers to go in there. 3. | New Mexico The Waste Isolation Pilot Plant’s history is relatively short, it became operational in 1999. The facility is used to store transuranic waste left over from nuclear weapons research. Transuranic waste consists of clothing, tools, rags, residues, debris, soil and other items contaminated with radioactive elements, mostly plutonium. 2.Pacific Proving Grounds | Pacific Ocean Pacific Proving Grounds is the name given to a number of sites on the Marshall Islands and in the Pacific Ocean which were used for nuclear testing between 1946 and 1962. The US conducted 105 atmospheric and underwater nuclear tests in the Pacific. 1.Pripyat | Ukraine 50000 People used to live here... Now it's a ghost town. Radiation levels were so high that Nuclear Power stations in Sweden, Finland and Norway detected the anomaly. Twenty years later, the area is still uninhabitable. Except for the 197 people living in 11 villages scattered in the Chernobyl Exclusion Zone. The average age is 63.
Views: 339049 World Unearthed
What is FLASH SMELTING? What does FLASH SMELTING mean? FLASH SMELTING meaning & explanation
 
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What is FLASH SMELTING? What does FLASH SMELTING mean? FLASH SMELTING meaning - FLASH SMELTING definition - FLASH SMELTING explanation. Source: Wikipedia.org article, adapted under https://creativecommons.org/licenses/by-sa/3.0/ license. Flash smelting is a smelting process for sulfur-containing ores including chalcopyrite. The process was developed by Outokumpu in Finland and first applied at the Harjavalta plant in 1949 for smelting copper ore. It has also been adapted for nickel and lead production. A second flash smelting system was developed by the International Nickel Company ('INCO') and has a different concentrate feed design compared to the Outokumpu flash furnace. The Inco flash furnace has end-wall concentrate injection burners and a central waste gas off-take, while the Outokumpu flash furnace has a water-cooled reaction shaft at one end of the vessel and a waste gas off-take at the other end. While the INCO flash furnace at Sudbury was the first commercial use of oxygen flash smelting, fewer smelters use the INCO flash furnace than the Outokumpu flash furnace. Flash smelting with oxygen-enriched air (the 'reaction gas') makes use of the energy contained in the concentrate to supply most of the energy required by the furnaces. The concentrate must be dried before it is injected into the furnaces and, in the case of the Outokumpu process, some of the furnaces use an optional heater to warm the reaction gas typically to 100–450 °C. The reactions in the flash smelting furnaces produce copper matte, iron oxides and sulfur dioxide. The reacted particles fall into a bath at the bottom of the furnace, where the iron oxides react with fluxes, such as silica and limestone, to form a slag. In most cases, the slag can be discarded, perhaps after some cleaning, and the matte is further treated in converters to produce blister copper. In some cases where the flash furnaces are fed with concentrate containing a sufficiently high copper content, the concentrate is converted directly to blister in a single Outokumpu furnace and further converting is unnecessary. The sulfur dioxide produced by flash smelting is typically captured in a sulfuric acid plant, removing the major environmental effect of smelting. Outotec, formerly the technology division of Outokumpu, now holds Outokumpu's patents to the technology and licenses it worldwide. INCO was acquired by Brazil's Vale in 2006.
Views: 1462 The Audiopedia
Lead Ore Galena Processing Plant
 
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Lead Smelting Lead smelting is a high-level process, and it can be enabled through plan, machinery and the training and development of the employees to contain the pertinent process. The lead smelting is in the limelight for the different companies to deal or process the immense range of wastes. This is a recycling facility, which enhances the visibility of the waste reduction in the organization. Scrap for Smelting section: • Lead Scrap • Lead Pipes • Other Lead Scrap • Lead Sheets • Lead Concentrate • Lead-acid batteries • Lead Cables Smelting process The lead bearing, appropriate fluxes, reductants, Slag and other scrap are the waste material, which is good to smelt in this particular smelting system. The product mix approach has been used in this system to process these materials. In the Rotary furnace, the smelting process can be conducted. The operators set the temperature at 900-1250 degrees centigrade to contain the process and derive the outputs. The Rotary function depends on the type of materials of products as the temperature is to be set accordingly. The customized complement of accessories and equipment are the other aspect, which can be used in this process to make the difference and gain the result. Another interesting aspect is in the limelight due to the minimizing Sulphur-dioxide emissions. This is necessary for the firm to initiate optimum functioning of the plant, and it can create or bring the efficiency when navigating or processing the waste material.
ENG 4A03 - ALEX SOLOVYEV - THE DANGER OF PROGRESS TRAPS
 
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TED talk for Ethics and Sustainability in Engineering. Script: Hey everyone, I'm going to be doing my ted talk today about progress traps and the importance of learning from our mistakes as a society. So, a progress trap, from various definitions I found on the internet -- A progress trap is the human condition societies experience when, in pursuing progress through ingenuity, they inadvertently introduce problems they do not have the resources or political will to solve for fear of short term losses of status or quality of life or stability-- Basically, people see that there is something bad happening around them but they are unable to act accordingly and change anything about it. An example that I'm going to use is the nickel and copper and industry that emerged in Sudbury in the 1900s. When the transcontinental railroad was being build it was discovered that Sudbury is very rich in copper and nickel deposits. So naturally, there was business there; mining companies formed, lots of jobs were made. People were happy, people were working, everyone was making money and everything was all peachy. At that time they didn't realize the harm that the production of all these materials would cause to the environment. Nickel and sulfur metallurgical science; the production of it (nickel/copper) produces lots of sulfur dioxide (SO2). They were constantly creating sulfur and all this Sulfur dioxide is being released into the atmosphere. This reacts with Oxygen and water(vapor) and comes back down as acid rain (sulfuric acid) which is very harmful to for the ecological systems; the plant life, the aquatic life, fish, frogs. Everything starts to break down the more it happens. If you don't do anything about it, the acidity (of the acid rain) keep increasing then that's a progress trap; we see that we are destroying the land and yet we're not doing anything about it. My idea that would help to avoid something like this: instead of just releasing the sulfur into the atmosphere they should use that sulfur (dioxide) to create sulfuric acid(H2SO4), which is already a common process that is already done. They can use that (sulfuric acid) to make fertilizer which they can put back into the land which was once destroyed by the sulfuric acid (in the form of acid rain). That would be a way around the progress trap, a way to learn from our mistakes. Otherwise Sudbury could end up being a ghost town, its happened in very many places around the world. That's my thought on that, thanks for watching.
Views: 195 russianrawkit
PERU: US OWNED COPPER SMELTER CAUSING POLLUTION PROBLEM
 
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Spanish/Nat A U-S owned copper smelter in Peru is providing hundreds of jobs in the south of the country, but environmentalists want it closed. They claim the company is taking advantage of Peru's lax environmental regulations and is spewing out pollutants. Like many other developing countries, Peru faces a development dilemma. The country is desperate for economic development but environmentalists claim this often comes at the cost of environmental degradation. This U-S-owned copper smelter is in Ilo, a small town in southern Peru. The facility is the largest in the country generating huge profits and providing hundreds of jobs. But environmentalists want it closed. They claim the company is taking advantage of Peru's lax environmental regulations and spewing out pollutants that are sickening the population and poisoning the environment. Every night residents get down on their knees and stuff cloth in the cracks around their doors and windows to protect their families from the acrid smoke released by the smelter. Young children like this one are among the many residents suffering from respiratory ailments. SOUNDBITE: (Spanish) "The doctor says it's a permanent affliction. He was diagnosed with bronchial allergy. At the moment his right lung is very contaminated." SUPER CAPTION: Antonia Serran, child's mother At times the smoke from the smelter is so thick that it hovers over the city like a heavy fog. On days like these, residents often end up at the local hospital coughing and vomiting -- and children are told to play indoors. SOUNDBITE: (Spanish) "Children cannot study in their schools, they can't exercise. It's really tough when too many people come in (to the hospital). According to hospital data most cases are respiratory ailments." SUPER CAPTION: Ernesto Herrera, Mayor of Ilo But residents are not the only apparent victims. These olive trees are also ailing. Officials from the Southern Peru Copper company maintain their smelter is not to blame for the town's health problems. Environmentalists concede the plant complies with Peruvian environmental standards but they say that is precisely the problem. They claim that all too often the absence of strong anti-pollution laws in many developing countries enable multinationals to pollute the local environment. Residents of Ilo have taken legal action against the company. But lawyers say officials have not shown any interest in solving their problems. SOUNDBITE: (Spanish) "As I said it's a matter of will. They're not interested in solving the pollution problem, because as one manager said during an interview with a French TV network, we are not in the United States, implying that because they are in Peru they can do whatever they please." SUPER CAPTION: Lady Guzman, lawyer representing Ilo residents Ilo residents face an uphill struggle in their legal battle. Though the provincial health minister has publicly claimed respiratory ailments are the leading health problem in Ilo, there are no medical studies showing a direct link between the town's health problems and emissions from the smelter. You can license this story through AP Archive: http://www.aparchive.com/metadata/youtube/6ae3189a15f7e435a3f3d2db0ae1d3c9 Find out more about AP Archive: http://www.aparchive.com/HowWeWork
Views: 125 AP Archive
Sterlite Copper CSR
 
03:57
We are India's largest non-ferrous metals and mining company and are one of the fastest growing private sector companies.
Views: 242 sterliteindustries
housekeeping crushing plant copper
 
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Contact Us For Help: http://wwa.stonecrushersolution.org/solutions/solutions.html copper mobile crusher in india Portable Copper Ore Crusher, , Mobile Crushing Plant supplier. 3 Portable Copper Ore Crusher market development. Copper crusher equipment industry is a labor, intensive copper processing plant pakistan Copper Ore Processing Plant in Pakistan. pakistan iron ore , Copper ore processing plant. This is a pakistan iron ore page, We are a mineral stone crushing and copper ore crushing plant in kazakhstan http://crusherexporters.com copper ore crushing plant in kazakhstan, kazakhstan crushing plant processing ore , copper ore crushing plant ghana , mobile cru aachi masala grinding machines housekeeping crushing plant copper; mobile crushing plant for sale or lease. in December 2012 when the Asset Sale Agreement was terminated on the grounds copper ore crushing plant in oman Copper crushing plant business plan Oman. copper ore crushing plant in oman, SBM SBM is one of the biggest manufacturers in Aggregate Processing Machinery for the Processing Plant, From Zenith, Portable Crusher Plant Processing Plant. Zenith is a professional material processing designer and supplier in the world, we have excellent research and development group to provide our copper crushing plant Copper Crushing Plant. Copper Crushing Plant. Most copper is used for electrical equipment, construction, such as roofing and plumbing, industrial machineri, such as equipment selection for crusher plant ppt Crushing Plant Design and Layout Considerations, Mining . In mining operations, the layout of crushing plants and ancillary equipment and The principal design Copper Crusher Manufactures Home Copper Crusher Manufactures. cleaning shears, metal balers, cable strippers, Mobile Crushing Plant, Joyal, Crusher. Heavy Machinery Used in Copper Mining,Copper Ore Crushing Heavy Machinery Used in Copper Mining Copper Mining Operation. Copper ore mining may be the operation of physically removing ore from deposits within the earth. Equipment for Stone Crushing Plants in Peru Stone crushing plant is very popular in Peru, so it needs a large amount of crushing equipment. SBM is professional in producing crushing equipment, grinding air cleaning system for crushing plant Home ? Mining ? housekeeping crushing plant copper. Drying of the sulfur dioxide gas from the gas cleaning system;. Air PBR 106.313: Tumblers for Cleaning crushing plant copper ore Used Complete Copper Ore Crushing Plant in American, mining machine . Used Complete Copper Ore Crushing Plant in American. Used Complete Copper Ore Crushing Plant in copper ore washer machine plant http://crusherexporters.com copper ore washer machine plant, cost of copper ore processing machine plant , plant machine of process copper ore , cleaning pl After Copper Ore Crushing Transporting By Conveyor To Plant After Copper Ore Crushing Transporting By Conveyor To Plant; Copper Crushing Plant,Copper Ore Crushing Plant,Copper .. in coppre ore crushing plant, after the crushing plant daily inspection sheets, MTM Crusher Inspection Checklist, Plant, SafeWork SA. Inspection Checklist—Plant. Plant can be hazardous in many ways, not only to the operator, but Crushing—can anyone be grinding ball mill 80mm south africa housekeeping at coal mines; crushing plant copper ore; sand manufacturing . extracting copper ore crushing machine; flow sheet diagram for the manufacture; copper ore crushing plant in oman copper ore crushing plant in oman, Mining crushing machinery SBM Heavy Industry is a professional Quarry Crushing equipment manufacturing &helip; Olympic Dam Copper, Uranium Mine, Adelaide, Mining, Technology.com The Olympic Dam is a huge mining centre located in South Australia, 560km north, west of Adelaide. Home to a major oxide copper gold deposit producing copper, uranium copper mining company crushing plant , Mining Equipment In, Pit Crushing and Conveying System in Copper Mining, Mining ,, Fully Mobile Crushing Plant in Coal Mining Fully Mobile Crushing System in Copper Mining Long crusher plant manufacturer sbm Crusher, Grinding Mill Manufacturer, SBM. Crusher, grinding machine used for crushing in stone quarry, coal, cement plant, mineral ore mining. Manufacturer in China small scale cement copper plant small scale cement plants in india . small mini cement plant in india. rotary kiln cement plant cost in indiaZenith Rock Crusher For Sale 3 Small cement plants in copper washig plant, Mining Equipment Price , KWS Copper Concentrate Price Chile,Copper Washig Plants Zambia Copper Concentrate Price Chile. Especially, as a big customer of Chile copper, China has imported more copper plan
Views: 111 rxlp qloga
How to Refine Precious Metals - Electrolysis: Hydrometallurgy Part 4
 
05:24
This video shows the refining process steps using electrolysis of precious metals used by professional refining companies. Silver, Gold, Platinum, Palladium and the other platinum group metals. Electrowinning and electrorefining are presented. Part 4 will focus on the hydrometallurgical electrolysis processes. ipmi.org
Views: 110287 TheIPMI
Mod-01 Lec-24 Lecture-24-Extraction of Lead
 
51:29
Non-ferrous Extractive Metallurgy by Prof.H.S. Ray,Department of Metallurgical & Materials Engineering,IIT Kharagpur.For more details on NPTEL visit http://nptel.iitm.ac.in
Views: 2705 nptelhrd
Free Gold Found In Mineralized Outcropping
 
01:39
A 40 meter wide zone with disseminated pyrite, several smaller veins of sulfides found one sample was sent in from this zone assays came back with trace silver, 0.66% copper and 1.1g/to gold. Want to support us? All money will go to fund new videos and some prizes for our patrons! Please go to the link below! https://www.patreon.com/911mining https://shop.spreadshirt.com/911mining Also don't forget to follow us on Facebook! https://m.facebook.com/911mining Thank you & Enjoy! 911 Mining & Prospecting Co
Making Sulfuric Acid 1930
 
00:33
Sulfuric acid (sulphuric acid in British English) is a strong mineral acid with the molecular formula H2SO4. It is soluble in water at all concentrations. Sulfuric acid has many applications, and is one of the top products of the chemical industry. World production in 2001 was 165 million tonnes, with an approximate value of US$8 billion. Principal uses include lead-acid batteries for cars and other vehicles, ore processing, fertilizer manufacturing, oil refining, wastewater processing, and chemical synthesis. In industrial use, although sulfuric acid is non-flammable, contact with metals in the event of a spillage can lead to the liberation of hydrogen gas. The dispersal of acid aerosols and gaseous sulfur dioxide is an additional hazard of fires involving sulfuric acid. Sulfuric acid is not considered toxic besides its obvious corrosive hazard, and the main occupational risks are skin contact leading to burns (see above) and the inhalation of aerosols. Exposure to aerosols at high concentrations leads to immediate and severe irritation of the eyes, respiratory tract and mucous membranes: this ceases rapidly after exposure, although there is a risk of subsequent pulmonary edema if tissue damage has been more severe. At lower concentrations, the most commonly reported symptom of chronic exposure to sulfuric acid aerosols is erosion of the teeth, found in virtually all studies. In the laboratory, the corrosive properties of sulfuric acid are accentuated by its highly exothermic reaction with water. Burns from sulfuric acid are potentially more serious than those of comparable strong acids (e.g. hydrochloric acid), as there is additional tissue damage due to dehydration and particularly secondary thermal damage due to the heat liberated by the reaction with water. The standard first aid treatment for acid spills on the skin is, as for other corrosive agents, irrigation with large quantities of water. Washing is continued for at least ten to fifteen minutes to cool the tissue surrounding the acid burn and to prevent secondary damage. Contaminated clothing is removed immediately and the underlying skin washed thoroughly. Preparation of the diluted acid can also be dangerous due to the heat released in the dilution process. The concentrated acid is always added to water and not the other way round, to take advantage of the relatively high heat capacity of water. Addition of water to concentrated sulfuric acid leads to the dispersal of a sulfuric acid aerosol or worse, an explosion. For more information on the workplace hazards of sulfuric acid, go to http://198.246.98.21/niosh/ipcsneng/neng0362.html . This is clipped from the 1930 US Bureau of Mines silent film, Sulphur. The Texas Gulf Sulphur Company assisted with the film. The entire film is available at the US National Archive.
Views: 8615 markdcatlin
Global Mining Finance Autumn 2011 - Rio Tinto
 
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Global Mining Finance Autumn 2011 Conference Speaker: Kevin Fox Sponsor: Rio Tinto Date: 21st September 2011 Location: London Chamber of Commerce & Industry
Views: 447 GlobalMiningFinance
How to Refine Precious Metals - Precipitation:   Hydrometallurgy Part 3
 
04:48
This video shows the refining process steps using precipitation of precious metals used by professional refining companies. Silver, Gold, Platinum, Palladium and the other platinum group metals. Part 4 will focus on the hydrometallurgical electrolysis processes. ipmi.org
Views: 18553 TheIPMI
San Francisco Pollution Liability: Coal Mining
 
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Although the usage of coal for electricity has gone down in recent years, coal mining still remains a valuable industry in the energy sector. Despite rising concerns about global warming in the U.S., large coal companies maintain that coal-fired power can be environmentally sustainable, and beneficial to the energy practices of Americans. Still though, coal mining comes with risks; with the environmental impact of the coal industry affecting land use, waste management, water, and air pollution. Atmospheric pollution is not the only type of pollution that raises concern; coal burning produces many solid waste products annually. These products include fly ash, bottom ash, flue-gas desulfurization sludge that contains mercury, among other chemicals, and more. According to environmental advocates, such as the writers for DeSmogBlog.com, research has found that a typical-sized coal-burning electricity plant in the U.S. puts out approximately 3.7 million tons of carbon dioxide, 10,000 tons of sulfur dioxide, 10,200 tons of nitrogen oxide, and more, per year. These sources say that a standard 500 megawatt coal-fired electrical plant burns about 1,430,000 tons of coal, uses 2.2 billion gallons of water, and uses 146,000 tons of limestone each year as well. Needless to say, owning and operating a coal mining company or any other type of energy production company comes with inherent risks. At DiNicola Insurance Services, we understand these risks; which is why we offer a comprehensive San Francisco Pollution Liability Program for business in the energy sector, as well as other various industries. Please contact us today for more information at (855) 247-1912. http://www.dinicolains.com/sf-pollution-liability-value-risks-coal-mining/
Views: 128 DiNicolaInsurance
Uses of Sulfuric Acid 1930
 
02:24
Sulfuric acid has many applications, and is one of the top products of the chemical industry. World production in 2001 was 165 million tonnes, with an approximate value of US$8 billion. Principal uses include lead-acid batteries for cars and other vehicles, ore processing, fertilizer manufacturing, oil refining, wastewater processing, and chemical synthesis. Sulfuric acid (sulphuric acid in British English) is a strong mineral acid with the molecular formula H2SO4. It is soluble in water at all concentrations. In industrial use, although sulfuric acid is non-flammable, contact with metals in the event of a spillage can lead to the liberation of hydrogen gas. The dispersal of acid aerosols and gaseous sulfur dioxide is an additional hazard of fires involving sulfuric acid. Sulfuric acid is not considered toxic besides its obvious corrosive hazard, and the main occupational risks are skin contact leading to burns (see above) and the inhalation of aerosols. Exposure to aerosols at high concentrations leads to immediate and severe irritation of the eyes, respiratory tract and mucous membranes: this ceases rapidly after exposure, although there is a risk of subsequent pulmonary edema if tissue damage has been more severe. At lower concentrations, the most commonly reported symptom of chronic exposure to sulfuric acid aerosols is erosion of the teeth, found in virtually all studies. In the laboratory, the corrosive properties of sulfuric acid are accentuated by its highly exothermic reaction with water. Burns from sulfuric acid are potentially more serious than those of comparable strong acids (e.g. hydrochloric acid), as there is additional tissue damage due to dehydration and particularly secondary thermal damage due to the heat liberated by the reaction with water. The standard first aid treatment for acid spills on the skin is, as for other corrosive agents, irrigation with large quantities of water. Washing is continued for at least ten to fifteen minutes to cool the tissue surrounding the acid burn and to prevent secondary damage. Contaminated clothing is removed immediately and the underlying skin washed thoroughly. Preparation of the diluted acid can also be dangerous due to the heat released in the dilution process. The concentrated acid is always added to water and not the other way round, to take advantage of the relatively high heat capacity of water. Addition of water to concentrated sulfuric acid leads to the dispersal of a sulfuric acid aerosol or worse, an explosion. For more information on the workplace hazards of sulfuric acid, go to http://198.246.98.21/niosh/ipcsneng/neng0362.html . This is clipped from the 1930 US Bureau of Mines silent film, Sulphur. The Texas Gulf Sulphur Company assisted with the film. The entire film is available at the US National Archive.
Views: 7225 markdcatlin
Vote Rio Tinto for Greenwash Gold 2012
 
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Vote Rio Tinto for Greenwash Gold: http://www.greenwashgold.org/index.php/rio-tinto The metal for the 2012 Olympics medals is being provided by Rio Tinto, a massive British mining company. Metal for the medals will come from the company's Kennecott Bingham Canyon mine in Utah, USA, and its Oyu Tolgoi mine in Mongolia. Groups in Utah are protesting about air pollution from Rio Tinto's Bingham Canyon operations, which contributes to hundreds of premature deaths each year in the Salt Lake City area. Planned expansion would make the situation worse. The Oyu Tolgoi mine will use enormous quantities of water in a desert region, and campaigners there accuse the company of poor planning and failure to share information with the public. But these are not the only concerns about Rio Tinto. The company's Ranger Uranium Mine in Australia is routinely spilling radioactive water into the surrounding area and is opposed by Aboriginal communities. Rio Tinto has been accused of association with human rights abuses around its now-closed Kelian Gold Mine in Indonesia and the Grasberg copper and gold mine in West Papua. In Bougainville, in the Pacific, the company hopes to reopen a copper mine which caused such catastrophic pollution that local people closed it down. Vicious repression of anti-mine protesters by the Government of Papua New Guinea sparked a war. In the USA, Rio Tinto is accused of violation of Indigenous treaty rights in Michigan, a legacy of pollution in Wisconsin, and planning destructive projects in Alaska and Arizona. And it has a history of appalling labour relations. Rio Tinto is bad news for many communities around the world. Its operations have failed to provide adequate protection of public health, the environment, workers and human rights. It is a scandal that it should be providing the metal for the London Olympic medals. Vote Rio Tinto for Greenwash Gold 2012! Directed and animated by Irene Fuga - www.irenefuga.com Sound and Music by Nathaniel Robin Special effects and additional animation by David Lopez Retamero
Views: 8674 GreenwashGold
TOP 10 MOST POLLUTED CITIES IN THE WORLD
 
04:20
The dirtiest and most dangerous places to live in the world TOP 10 CIUDADES MÁS CONTAMINADAS DEL MUNDO Channel group OPAJHA ВКонтакте https://vk.com/opajha Advertising on the channel OPAJHA https://clck.ru/9sgvr TOP 10 MOST POLLUTED CITIES IN THE WORLD: 10. Norilsk, Russia. Type of pollution - copper, oxides of Nickel, other heavy metals, sulphur dioxide, phenols. Norilsk is one of the world's largest centers of non-ferrous metallurgy. 9. The Niger Delta, Nigeria. Type of pollution - oil. 8. The River Riachuelo, Argentina. Type of pollution - volatile organic compounds, including toluene. 7. Kalimantan, Indonesia. Type of pollution - mercury, cadmium. Mercury used gold mining companies in the technological processes. 6. Kabwe, Zambia. Type of pollution - lead. Contamination has occurred as a result of uncontrolled production of lead in the XX century. Currently the mines are closed. 5. Hazaribagh, Bangladesh. Type of pollution - hexavalent chromium. Hazaribagh - the center of leather manufacturing in Bangladesh, where it is still prevalent outdated and inefficient processing technology. 4. Dzerzhinsk, Russia. Type of pollution - numerous toxic substances. Dzerzhinsk - one of the largest centers of chemical industry in the USSR and Russia, including the production of chemical weapons. 3. The River Citarum, Indonesia. Type of pollution - lead, cadmium, chromium, pesticides and other substances. 2. Chernobyl, Ukraine. Type of pollution - radiation (uranium, plutonium, cesium-137, strontium-90 and other metals). The territory contaminated by radiation after the explosion at the Chernobyl nuclear power plant April 22, 1986. 1. Agbogbloshie, Ghana. Type of pollution - lead. Here is the second largest landfill of consumer electronics in West Africa. LET'S SAVE THE NATURE TOGETHER! The rating compiled by the authoritative American non-profit scientific research organization Blacksmith Institute. Music: 30 Second Classical and Atlantis by AudionautiX (created by Jason Shaw) Earn on YouTube best affiliate program https://clck.ru/9R7TK Profitable put money earned on YouTube through reliable foreign bank https://clck.ru/9QCEE
Views: 3688 Opajha
My Green Sudbury on the One Million Acts of Green December 15, 2008
 
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In October 2008, I wrote my very first blog ever. It was about how Sudbury's regreening inspires me to believe that we will overcome climate crisis. It was published on the GreenNexxus -- One Million Acts of Green website. A TV producer liked it and sent a film crew to my house, interviewed me and I toured them around Sudbury to show them My Green Sudbury. Here is the local news story that went with it: https://www.sudbury.com/local-news/sudbury-green-video-makes-cbc-website-222649 Original Blog is no longer online. Here it is: My Green Sudbury Yes, I am talking about Sudbury, Ontario, Canada; a small town famous for its moonscape like topography. That moonscape is now mostly obscured by trees and vegetation. Since the 1980’s this city has transformed so much that Sudbury has been designated by the United Nations University as a Regional Centre of Expertise for Sustainable Development. How our city transformed from an environmental embarrassment to an environmental leader is an example to the world on how things can change. Sudbury is a Northern mining town nestled in the crater of a nickel-copper-rich meteorite that hit the Earth over a billion years ago. Companies that mine and smelt copper and nickel are one of the main employers in our city. The smelting of nickel and copper produces sulfur dioxide. In the past, the sulfur dioxide produced from smelting was released directly into the air. Sulfur dioxide reacts with water in the atmosphere to form acid rain. Locally, acid rain burnt the landscape and the air made people sick. An initial solution to the sulfur dioxide pollution was dilution. In the 1970’s INCO (now called Vale-INCO) built The Superstack, the largest smoke stack in the world. This action helped Sudbury with its local sulfur dioxide problem. However, the Earth’s atmosphere is finite and the emissions from The Superstack caused acid rain across the northeastern portion of the United States and Canada. The acid rain acidified many lakes and was killing maple trees threatening the maple sugar industry. As a consequence of acting locally but not thinking globally, more work needed to be done to solve the problem of sulfur dioxide emissions. Eventually unions, industry, post-secondary institutions, school boards, grassroots environmental groups, all three levels government and the U.S. government (Acid Rain Treaty) effectively dealt with the problem of sulfur dioxide emissions. The sulfur dioxide emissions from the Superstack now are over 90% less than they were in the 1980’s. In the end, industry made money removing the sulfur dioxide from their emissions. Sudbury’s experience is a concrete example of how to remove a gas from the atmosphere, analogous to what we have to do now with carbon dioxide. What can the world learn from Sudbury’s experience? Many different organizations, unions, industries, educational institutions, environmental groups, economic minds and multiple levels of government will have to work together to effectively deal with the problem of carbon dioxide emissions. In addition, cross-cultural communication will play an integral role in dealing with climate change. People will have to be educated to accept the changes that are about to come. There is a lot of work ahead and lots of niches to be filled. Don’t forget that there is money to be made in adjusting to climate change. I live in a kind and caring community. Sudbury is a tricultural community with people from all over the world living in harmony with a vibrant French Canadian community and a very visible and welcoming First Nations community. I am proud to be from Sudbury, work as the Science Outreach Coordinator for Laurentian University, be a partner with the Let’s Talk Science Partnership Program and be a presenter for The Climate Project Canada. I know we have rough road ahead with adjusting economically to climate change but I also have hope because I live in a city that has “been there and done that”.
Views: 33 Cathy Orlando
Tantalum - The MOST CONFLICT Metal On EARTH!
 
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Thanks for the provided tantalum: http://www.samaterials.com/ Patreon: https://www.patreon.com/Thoisoi?ty=h Facebook: https://www.facebook.com/thoisoi2 Instagram: https://www.instagram.com/thoisoi/ Do not repeat the experiments shown in this video! So, today I want to tell you about this refractory and also a conflict making metal, tantalum. In the periodic table of chemical elements tantalum is located in the fifth group, among the so-called transitional refractory metals. Due to its rarity and difficulty in obtaining, tantalum was named after the Greek king Tantalus. According to the legend, he offended Zeus and the other gods, for which he was cast out of heaven for an eternal torment. Like the ancient Greek king, many scientists and researchers have suffered and endured, trying to obtain this element in its pure form. Externally, tantalum looks like a grey shiny metal, and by the way quite heavy. In its density it comes next after the gold. If you take the current market price, one kilogram of tantalum costs around $150, therefore this metal is quite expensive. Tantalum is very ductile, it’s very easy to make a wire or foil from it. This metal is extracted from the mineral coltan, the deposits of which are located in Brazil, but especially rich deposits of tantalum ores are found in Central Africa. Recently tantalum is referred to as a conflict making metal, because a lot of African countries are fighting to get their hands on it. For example, in Congo and Rwanda there are military conflicts associated with the smuggling of tantalum ore. From about the last decade, about 9 African countries and 20 different military groups were involved in the tantalum wars. However, let’s go back to the chemical properties of the tantalum metal. From the chemical point of view, this metal is extremely stable, it is not soluble in dilute acids, even in the hydrofluoric acid due to a very robust oxide film covering the metal. One of the very few caustic environments that can dissolve tantalum is a mixture of hydrofluoric acid and nitric acid, in which from the tantalum a complex compound forms that is soluble in water. In the form of a powder tantalum burns quite well in air, forming the tantalum oxide. In spite of all its chemical stability, this metal also reacts well with molten alkalis, forming tantalates. For example, if you pour a bit of dry sodium hydroxide on the tantalum foil and then melt it, such an aggressive environment can easily dissolve the tantalum and burn a hole in the tantalum foil. Though that’s pretty much it, you cannot conduct any other special chemical experiments with tantalum due to its inertness. The only thing we can do is heat the tantalum rod and see how fast will it oxidize in the hot flame of a gas burner. After such an abuse, tantalum rod gets covered with a white and inert substance – tantalum oxide from reacting with oxygen in air. This material is also used in creating glass that absorbs gamma rays. Because of its plasticity and chemical stability, in the olden days tantalum was used for making filaments for light bulbs, but later with the rise of the price for this metal, tantalum was replaced with a much cheaper tungsten. The internal resistivity of tantalum is comparable to the one of steel, hence this element can be used to create heating elements instead of using nichrome, especially in places where you need a very high temperature, as tantalum melts at more or less about three thousand degrees Celsius! So, for example, it is possible to heat the tantalum wire and it will not oxidize as much. At the moment, one of the most important applications of tantalum is in manufacturing the most efficient tantalum capacitors, in electronics. In the capacitors like anode a very fine tantalum powder is used, which is pressed around the tantalum wire and is sintered to the form of a sponge. Then such sponge is anodized, i.e. is covered with a layer of tantalum pentoxide that acts as the dielectric layer. Next, the anodized tantalum sponge is covered with a layer of the cathode of manganese dioxide. Then, on top, a layer of graphite and a layer of silver is added, and now the capacitor is ready. The advantage of these capacitors is that they can be made to be extremely small, due to the very thin dielectric film. These kind of capacitors can be put into any computer, smartphone or a tablet. So say thanks to tantalum for the smartphones. Recently, jewelers are trying to use tantalum in the jewelry, as this metal is quite dense and is completely non-toxic to humans. Now even the Chinese sell tantalum rings. Hmm, would you gift your girlfriend a tantalum decoration? In my opinion, it would be quite original. However, tantalum by itself is grey and doesn’t shine as beautifully as gold.
QUANTITATIVE ANALYSIS
 
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For more information: http://www.7activestudio.com [email protected] http://www.7activemedical.com/ [email protected] http://www.sciencetuts.com/ [email protected] Contact: +91- 9700061777, 040-64501777 / 65864777 7 Active Technology Solutions Pvt.Ltd. is an educational 3D digital content provider for K-12. We also customise the content as per your requirement for companies platform providers colleges etc . 7 Active driving force "The Joy of Happy Learning" -- is what makes difference from other digital content providers. We consider Student needs, Lecturer needs and College needs in designing the 3D & 2D Animated Video Lectures. We are carrying a huge 3D Digital Library ready to use. QUANTITATIVE ANALYSIS:This analysis gives the percentage composition of elements present in an organic compound.A known mass of an organic compound is burnt in the presence of excess of oxygen and copper II oxide.Carbon and hydrogen in the compound are oxidised to carbon dioxide and water respectively. The mass of water produced is determined by passing the mixture through a weighed U-tube containing anhydrous calcium chloride. Carbon dioxide is absorbed in another U-tube containing concentrated solution of potassium hydroxide. These tubes are connected in series. The increase in masses of calcium chloride and potassium hydroxide gives the amounts ofwater and carbon dioxide from which the percentages of carbon and hydrogen are calculated.Let the mass of organic compound be m g, mass of water and carbon dioxide produced be m1 and m2 g respectively;Percentage of carbon=12x m2 x100/ 44 x m.Percentage of hydrogen = 2 x m1 x 100/ 18 x m. Nitrogen:There are two methods for estimation of nitrogen: 1. Dumas method and 2. Kjeldahl's method. 1. Dumas method:The nitrogen containing organic compound, when heated with copper oxide in an atmosphere of carbon dioxide, yields free nitrogen in addition to carbon dioxide and water.The mixture of gases so produced is collected over an aqueous solution of potassium hydroxide which absorbs carbon dioxide. Nitrogen is collected in the upper part of the graduated tube.Let the mass of organic compound = m g. Volume of nitrogen collected = V1 ml. Room temperature = T1K. Volume of nitrogen at STP= T1K. Volume of nitrogen at STP=p1 v1 x 273 / 760 x T1. Where p1and V1are the pressure and volume of nitrogen, value of p1 is obtained by the relation:p1= Atmospheric pressure - Aqueous tension. 22400 ml N2 at STP weighs 28 g Vml N2 at STP weighs =28 x V /22400 grams. Percentage of nitrogen =28 x 100/2240xM. 2. Kjeldahl's method:The compoundcontaining nitrogen is heated withconcentrated sulphuric acid. Nitrogen in thecompound gets converted to ammoniumsulphate. The resulting acidmixture is then heated with excess of sodium hydroxide.The amount of ammonia produced is determined by estimating the amount of sulphuric acid consumed in thereaction.It is done by estimating unreacted sulphuric acid left after the absorption of ammonia by titrating it with standard alkali solution. The difference between the initial amount of acid taken and that left after the reaction gives the amount of acid reacted with ammonia.Let the mass of organic compound taken = m g. Volume of H2SO4 of molarity, M,taken = V mL.Volume of NaOH of molarity, M, used for titration of excess of H2SO4 = V1 mL.V1mL of NaOH of molarity M = V1 /2 mL of H2SO4 of molarity M. Volume of H2SO4 of molarity M unused = V - V1/2mL.V- V1/2 mL of H2SO4 of molarity M = 2 V-V1/2 mL of NH3 solution of molarity M.
Views: 37710 7activestudio
Southern Pacific Railway Depot
 
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Built in 1915, the Southern Pacific Railway Depot was used extensively to ferry passengers and freight to the small sulfur mining community of Sulphur, Louisiana. The depot fell into disuse in the 1970's, and a group of local residents began efforts to preserve the building as a piece of history. In 1975, the Southern Pacific Transportation Company finally agreed to sell the building to the Sulphur Association of Commerce for one dollar, on the requirement that the building be moved away from the railroad tracks, due to safety issues. After funds were raised to move the building, arrangements were made with a local house-moving company to relocate the building near Frasch Park, just off of Picard Road. The two-mile move took 10 hours, and required the efforts of many in the community. After moving the building, next came the process of renovation. The building was cleaned, scraped, repaired, refinished, and repainted, just in time for its dedication ceremony, which took place on the nation's 200th birthday, July 4, 1976. It housed several different types of exhibits over the years, including a permanent exhibit on the history of the town, and is also the only museum in America to spotlight the Frasch mining process. It has been moved one other time in the history of the town, to its current location on 900 S. Huntington Street, across the street from the Sulphur Judicial Center. Moving to this location has resulted in a drastic increase in visitors.
Views: 376 SuperRailroads
Resolution Copper, Rio Tinto, & Mahmoud Ahmadinejad
 
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Congressman Ed Markey (D-MA), Ranking Member of the Natural Resources Committee, speaks on the Floor of the House of Representatives on October 26, 2011.
Manganese ore processing equipment spiral separator
 
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Website:http://www.shichengmachine.com/ Jiangxi Shicheng Mine Machinery Factory is a professional metallurgical mineral processing machinery enterprise, who integrates production, research, sales and site tracking services into one complete unit. Over several years history, the company is dedicated in the mineral processing equipment products design and production. Now the company has accumulated rich experience in design and production.
How Is Silicon Dioxide Removed From Iron Ore?
 
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https://goo.gl/6U6t22 - Subscribe For more Videos ! For more Health Tips | Like | Comment | Share : ▷ CONNECT with us!! #HealthDiaries ► YOUTUBE - https://goo.gl/6U6t22 ► Facebook - https://goo.gl/uTP7zG ► Twitter - https://twitter.com/JuliyaLucy ► G+ Community - https://goo.gl/AfUDpR ► Google + - https://goo.gl/3rcniv ► Visit us - http://healthaware.in/ ► Blogger - https://juliyalucy.blogspot.in/ Watch for more Health Videos: ► How To Avoid Unwanted Pregnancy Naturally: https://goo.gl/hRy93e ► Period Hacks || How To Stop Your Periods Early: https://goo.gl/dSmFgi ► Cold and Flu Home Remedies: https://goo.gl/biPp8b ► Homemade Facial Packs: https://goo.gl/NwV5zj ► How To Lose Belly Fat In 7 Days: https://goo.gl/EHN879 ► Powerfull Foods for Control #Diabetes: https://goo.gl/9SdaLY ► Natural Hand Care Tips At Home That Work: https://goo.gl/YF3Exa ► How to Tighten #SaggingBreast: https://goo.gl/ENnb6b ► Natural Face Pack For Instant Glowing Skin: https://goo.gl/gvd5mM ► Get Rid of Stretch Marks Fast & Permanently: https://goo.gl/ZVYvQZ ► Eating Bananas with Black Spots: https://goo.gl/gXuri6 ► Drink this Juice every day to Cure #Thyroid in 3 Days: https://goo.gl/L3537H ► How Garlic Improves Sexual Stamina? https://goo.gl/GNcbYU ► Benefits of using Egg Shells: https://goo.gl/hAUyUS ► Home Remedies to Gain Weight Fast: https://goo.gl/jBVVQh ► Amazing Benefits of Olive Oil for Health: https://goo.gl/R3583v ► Rapid Relief of Chest Pain (Angina): https://goo.gl/idAFZR ► Home Remedies for Joint & Arthritis Pains Relief: https://goo.gl/jRbNkh ► SHOCKING TRICKs For #Diabetes Control: https://goo.gl/ATDDsV ► Doctors Are Shocked! #Diabetics: https://goo.gl/ZeQddJ ► Home Remedies for Gastric Troubles: https://goo.gl/72VR1b ► Juice for #Diabetics Type 2: https://goo.gl/3vDMqR --------- Iron ore often has silicon dioxide (sand) impurity which must be removed during the process. Iron ore impuriti, washing and desxsm the ground to remove major part impurities in iron such as silicon dioxide react with limestone. The former can be removed by washing the ore yahoo answers jul 16, 2010 how to separate iron from, is used remove silicon dioxide impurities in which would iron, becoming carbon process 327 extraction of metals mrmortonscience containing impurity name converter crushing plant with washing; What are gases reduced india; Iron mining australiaread more kerala, rajasthan and tamil nadu principal indian producers. Modules 7 12 google books resultwho to clean silica from iron ore gv machine. Air is blown in at the bottom and rises up blast furnace. The limestone (chemically, calcium carbonate) decomposes in the heat of furnace to oxide. Iron ore washing machinne small for sale iron washinging plant india, in jaipur. Iron ores such as haematite contain iron(iii) oxide, fe2o3. The iron oxide in the ore is simple reduced to molten. To be reduced in a blast silicon dioxide and small amount of the total recoverable reserves iron ore india are about more will present. To do this limestone is added to the charge. Chemistry blast furnace reduction of iron oxide dynamic sciencebbc bitesize gcse chemistry and aluminium revision 4. Click on the blue writing to see reactions. Caco3 cao co2 sio2 casio3. Removed by washing the ore prior. While slags are generally used to remove waste in metal smelting, they can also clean, colorless glass how silica from iron ore prices of flotation reagents for removing sands sale. The limestone (chemically, calcium carbonate) decomposes in the heat of furnace to oxide gcse chemistry extraction iron blast impurities and slag science. This page looks at the use of blast furnace in extraction iron from ore, and conversion raw calcium oxide is a basic reacts with acidic oxides such as silicon dioxide present rock. Gcse chemistry extraction of iron in the blast furnace and steel chemguide. To give calcium oxide (quicklime) and carbon dioxide. First carbon reacts with oxygen in the air exothermic reaction to produce extract iron from iron(iii) oxide, we remove chemically. Smelted) from its raw ore. Blown into the extracting ironiron is extracted from iron ore in a huge container called blast furnace. Mainly iron(iii) oxide). Silicon will be present in the iron. Cambridge igcse chemistry revision guide google books result. The oxygen must be removed from the iron(iii) oxide in order to leave iron behind. Htm url? Q webcache. To the blast furnace to remove impurities in iron ore. Gcse chemistry extraction of iron in the blast furnace metal myp. Iron can be tapped off from the bottom of furnace. Carbonate) is fed intosuperheated air. Know more the silicon oxide is removed as slag in blast furnace process reason why limestone added. This forms a slag on top of the iron and can be removed carbon is poured in at blast
Views: 166 Fredda Winkleman
Prime Minister Trudeau announces investment in Rio Tinto Alcan in Chicoutimi
 
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May 10, 2018 Prime Minister Justin Trudeau announces a $558 million dollar investment in Rio Tinto Alcan, which will produce the world's first carbon-free aluminum smelting process in Chicoutimi, Quebec.
Most DANGEROUS Waters In The World!
 
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Check out the Most DANGEROUS Waters In The World! From mysterious lakes to the most polluted rivers, this top 10 list of bodies of water that wants to hurt you is something you should be aware of! Subscribe For New Videos! http://goo.gl/UIzLeB Watch our "REAL Mermaid Sightings Around The World!" video here: https://youtu.be/ChM0CBRmVsM Watch our "10 Sea Monsters ATTACKING A Boat!" video here: https://youtu.be/0XROvoPCDNc Watch our "STRANGEST Animals People Keep As Pets!" video here: https://youtu.be/OMa96nPqz-Y 11. Tualatin River, USA Oregon’s Tualatin River is not the place to be if you want to take your dogs for a swim; close to a dozen dogs die there every year from exposure to toxic blue-green algae. A deadly form of bacteria, this algae can grow fast, quickly polluting a body of water into a deceptively pretty shade of turquoise. Those unfortunate enough to swallow the stuff can expect sickness and diarrhea at best, paralysis at worst. 10. Rio Tinto, Spain You might look at this water and think that something isn’t quite right. Deep red water is strange and is usually not a good sign. Probably anyone will think that something is not right when a river has deep red water. Rio Tinto (or Red River) is a highly acidic river with a pH of 1.7 – 2.5. This means the Rio Tinto is as strong as stomach acid and is more than powerful enough to any fish that dare swim in it. 9. Lake Kivu, Africa Lake Kivu is a shared resource between Rwanda and the Democratic Republic of Congo. It sits on a rift valley that is slowly being pulled apart, causing volcanic activity around the area. However, 300 meters (1,000 ft) below the surface of Lake Kivu lies a ticking time. Over 250 cubic kilometers (60 cubic miles) of carbon dioxide, along with around 65 cubic kilometers (15 cubic miles) of methane gas, lurks under this body of water, enough to provide electricity to several countries. 8. Jacob’s Well, USA Jacob’s Well is known to be one of the world’s most dangerous diving spots. The well is near Cypress Creek,in Texas and descends 9.1 meters vertically. If you go straight down you will reach the first chamber. Go further down and at an angle and you’ll reach the second chamber which is 24 meters below the surface. 7. Blackwater River, USA Too much water can be a bad thing, even if the water itself can’t hurt you, the power of nature can. Just ask the folks around Blackwater River in Virginia, who have seen the waters rise and attack far more than usual these past few years. After close to 60 years of normalcy, the Blackwater River has overflowed and flooded nearby towns six times in the past 10 years. 6. Citarum River, Indonesia The Citarum River plays an important role in the life of the people of West Java, however it is not doing well. In fact, it is known as the most polluted river in the world. And it’s all human’s fault. The place is so filled with non-biodegradable waste and harmful chemicals that it’s practically toxic. 5. Potomac River, USA Just outside Washington D.C., the Potomac River Gorge is a 14-mile stretch that extends from the Key Bridge in the District of Columbia north to the Great Falls of the Potomac. The gorge is a popular site for outdoor activities like kayaking, boating, fishing, and hiking enthusiasts. 4. The Blue Lagoon, UK In Derbyshire, UK, there is a lake with a beautiful turqouise color but this is utterly deceptive. It turns out it was a former quarry that was flooded and filled with calcium oxide. The famous “Blue Lagoon” looks beautiful and became a popular swimming spot for locals even though warning signs already stated the dangers it possesses. 3. Boiling Lake, Dominica The Boiling Lake in Dominica is not a lake at all but actually a flooded fumarole, which is a hole in the Earth’s crust. Located in the Morne Trois Pitons National Park, it is the world’s second largest hot spring and looks like it took its hotness to an entirely new level. Discovered in 1870, the water temperature along its edges is 82 to 92 degrees Celsius (180 to 197 degrees Fahrenheit). 2. The Rivers of Johannesburg, South Africa Catching E. coli is no fun under normal circumstances; now imagine you were literally swimming in the stuff. That’s the reality around various rivers in Johannesburg, South Africa, where the amount of E. coli bacteria in the water goes way beyond acceptable levels. Some areas, like the nearby Cheetah Bridge, host 240 times more E. coli than what experts consider healthy. 1. Lake Karachay, Russia Located in the southern Ural Mountains in eastern Russia, Lake Karachay has been described as the most radioactive body of water in the world. It could also be considered the most polluted place on the planet. Origins Explained is the place to be to find all the answers to your questions, from mysterious events and unsolved mysteries to everything there is to know about the world and its amazing animals!
Views: 79783 Origins Explained
Ben Talks- Mining and Smelting :: Featuring Nima, Fred and Adam
 
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MUSIC VIDEO LYRICS MINE. [Intro] Mining, Smelting, Polutting, yeah yeah [Verse 1] Ayy, I remember the environment before it fell off Blessin the locals with some benefits, but they been ripped off Polluting water where locals live, in fact we’re killin fish Started with clean water, now it tastes like Nima’s dirty dish Miner, I can see you coughing with yo black lungs Eww, that's the coal mines, saw the coal dust on yo taste buds I get way too angry seeing the forest being cut down Pull up on your town, trees are gone; I’m seein ghost town Mining to the Smelting, smelting to the mining, bruh Purifyin the zinc ore, killin nature’s core, bruh Smelting ore,exhuming fumes, polluting air, bruh Lots of cyanide is leaking into the water, bruh Oh no, minings still viral Killing animals is a big spiral Polluting the water, deforestation is a no no Mining’s dangerous, you and I know it [Chorus: 0:58] Miners, be moral Step down Be moral Step down Step down Be moral Step down Be moral Step down Be moral Step down Be moral Miners, step down Be moral Step down [Verse 2: 1:24] Who those people thinkin’ that mining’s the right plan? Drop the pickaxe, you’re shortening your lifespan Get that slag out my face, that aint right Poisons water, messing up your whole life People are so sick and tired of the erosion Show me somethin natural like oxygen with no mist Show me somethin natural like h2o with no piss Still destroying Earth’s surface and landscape with your mine pits Hey, mines are way too crazy, hey, see grass with no daisy, hey Acid raining is falling, hey, you just gotta end it, hey We do not erode it, hey, callin you Mark Bristow, hey We will stay against it, hey, you keep going for it, hey This that cuban chain, that diamond, that BEN talks, hey Watch my soul speak, you let the money talk, hey If you cut down trees, anthropogenic aerosols, hey We the anti-miners after all [Chorus] Miners, be moral Step down Be moral Step down Be moral Step down Be moral Step down Be moral Step down Be moral Step down Be moral Step down
Views: 359 Ben Cohen
Chemicals From Carbon-Zinc Batteries
 
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Subscribe for future videos: http://bit.ly/AMchemistryYT Like my video? leave a like and a response. --------------------------------------------------------------------------------------------------------------------------------------- In today's video will be showing you where to find three useful chemicals for a lab. A zinc-carbon battery contains Zinc metal, Carbon electrode, and manganese dioxide. Zinc-carbon are fairly non-toxic but still use appropriate lab gear. --------------------------------------------------------------------------------------------------------------------------------------- Check out my Facebook and Twitter for updates and upcoming videos. Facebook: ~ http://on.fb.me/15x1Lex Twitter: ~ http://bit.ly/1CHHIrj Instagram for behind the scenes pictures. Instagram: ~ http://bit.ly/1utGEjH --------------------------------------------------------------------------------------------------------------------------------------- AMchemistry is all about making chemistry fun and educational for audiences of all ages. This channel ranges from kitchen chemistry to more advanced chemistry experiments. ``````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````` Want to become a Youtube Partner? Click the link below to check if your channel qualifies. Click here: http://awe.sm/s7i0J ```````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````
Views: 1839 AMchemistry
Global Climate Change Policy - Extractive Industry Impacts and Response
 
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Jeff Hopkins, Principal Adviser for International Energy and Climate Policy at Rio Tinto, presented on October 29, 2013 as part of the AEDE Applied Economics Seminar Series. His presentation focused on climate change policy as experienced by an international mining company. This seminar was sponsored by Ohio State's Environmental Policy Initiative. Dr. Hopkins leads policy engagement in the U.S. and Canada for Rio Tinto and works with a globally-distributed corporate team as well as external affairs and environmental specialists who work on-site at Rio Tinto mines and businesses. Rio Tinto is the largest diversified mining company in the U.S. and the second-largest mining company in the world, with major operations producing iron ore, copper, aluminum, uranium, thermal and metallurgical coal, gold, and industrial minerals. As part of their mining, refining, and smelting of these metals and minerals, Rio Tinto emits 41 million tons of GHG emissions per year. Over 70 percent of these GHG emissions occur in places where carbon is regulated through a price-based scheme such as cap and trade or a carbon tax. Dr. Hopkins' policy education and advocacy work on behalf of Rio Tinto at the national and regional levels, often in collaboration with the larger business community and environmental NGOs, is based on extensive experience in scheme development and implementation. Prior to working for Rio Tinto, Dr. Hopkins was a policy analyst and chief economist for the United States House of Representatives Committee on the Budget, and before that for USDA's Economic Research Service. Dr. Hopkins received a PhD from AEDE in 1998, and was a Peace Corps Volunteer in Guatemala from 1987-1989.
Views: 354 OSU AEDE
ABG to Challenge Rio Tinto in International Courts
 
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The Autonomous Bougainville Government will challenge Rio Tinto in the international courts, for failing to address the serious mine legacy issues of environmental damage, social disruption and detrimental health problems. President John Momis exclusively told EMTV News, that Rio Tinto has contradicted its own policy, as members of the International Commission of Mining and Minerals Association. - visit us at http://www.emtv.com.pg/ for the latest news...
Views: 87 EMTV Online
Jeff Wilson: Precipitate’s Discovery Hole and the Tireo Gold Trend
 
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Jeff Wilson, CEO of Precipitate Gold Corp., and guest host Gwen Preston, editor of Resource Maven, discuss the Tireo Gold Trend and Precipitate’s recent discovery hole. Mr. Wilson also provides an overview of Precipitate’s plans for 2015.
Science Book Review: Recovery And Refining Of Precious Metals (Gemology) by C.W. Ammen
 
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http://www.ScienceBookMix.com This is the summary of Recovery And Refining Of Precious Metals (Gemology) by C.W. Ammen.
Views: 699 ScienceBookMix
Rio Tinto Diamonds with a Story - Cutting Impact
 
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Knowing a company is mindful of its impact on the environment and society makes consumers over 50% more likely to buy their products or services. This concept realizes the importance of using diamonds that are mined and manufactured in a socially and environmentally responsible way.
Smelting and Gold Refining Part 1: Smelting sulfides and black sands to recover gold/silver
 
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This is a video showing one potential way to recover the gold and silver values from the sulfide and black sand concentrates that come off our shaker table. These concentrates still can have appreciable gold values even when the free gold has been removed. When the concentrates to be smelted do not contain a sufficiently high precious metal content (between 25%-50% precious metals) a collector metal must be used to draw the precious metals to the bottom of the conical mold to ensure the recovery of the gold and silver. I have been using copper as a collector metal due to its low cost and ease of refining after smelting. I will be very interested to hear from you all what you think of the video and if you have any suggestions or tip for future smelts for higher recovery. Links to helpful info: Sampling and Assaying Precious Metals: https://archive.org/stream/samplingandassa00smitgoog#page/n8/mode/2up A Textbook of Fire Assaying: https://archive.org/stream/textbookoffireas00bugbrich#page/n5/mode/2up Fire Assaying: https://archive.org/stream/fireassaying032695mbp#page/n5/mode/2up Info on Matte: http://www.coralsas.eu/DocsHtm/TContext05_Matte_Speiss.htm The Chemistry of gold extraction: https://books.google.com/books?id=OuoV-o_Xf-EC&pg=PA457&lpg=PA457&dq=smelting+with+sodium+nitrate&source=bl&ots=As2x-mwmta&sig=7fLTI2K9kx55Ju6ZI1LmXLSPc_A&hl=en&sa=X&ei=dRiGVa7UEJPdoATN2afQCw&ved=0CB8Q6AEwAA#v=onepage&q=smelting%20with%20sodium%20nitrate&f=false Iron and oxidizing flux: http://www.doiserbia.nb.rs/img/doi/1450-5339/2011/1450-53391100007T.pdf [email protected] 360-595-4445 http://www.mbmmllc.com/
Views: 37540 mbmmllc
Salt/Gold Trade- Hailee Porter
 
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I created this video with the YouTube Video Editor (https://www.youtube.com/editor)
Views: 24 HAILEE PORTER
How to Replace Cathode Needle of Filter Cell
 
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The easy way to replace cathode needles of one filter cell. If you need exhaust air purification filter ESP, welcome you to contact our company. [email protected] WhatsApp: +86 18676525376 www.klean-esp.com
Views: 26 Abelia Zhang
Cadmium pollution being contained in Guangxi China
 
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The latest monitoring figures have shown a sharp decline of cadmium levels in the Longjiang river, in Guangxi Zhuang Autonomous Region. The drop follows growing fears over the toxic metal substance which was detected in the river two weeks ago.
Views: 195 ChemicalSuperman
Iron-process iron ore distribution in world notes
 
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SGS:http://www.gyratorycrusher.com/quarry/quarry/iron-crusher.html Iron Ore - Mineral Fact Sheets:http://www.gyratorycrusher.com/quarry/quarry/iron-crusher.html Blast furnace:http://www.gyratorycrusher.com/quarry/quarry/iron-crusher.html Smelting:http://www.gyratorycrusher.com/quarry/quarry/iron-crusher.html In a blast furnace, fuel, ore, and flux (limestone) are continuously supplied through the top of the furnace, while air (sometimes with oxygen enrichment) is blown into the lower section of the furnace, so that the chemical reactions take place throughout the furnace as the material moves downward. The end products are usually molten metal and slag phases tapped from the bottom, and flue gases exiting from the top of the furnace. The downward flow of the ore and flux in contact with an upflow of hot, carbon monoxide-richbustion gases is a countercurrent exchange process. This is a great increase from the typical 18th-century furnaces, which averaged about 360 tonnes (400 short tons) per year. Variations of the blast furnace, such as the Swedish electric blast furnace, have been developed in countries which have no native coal resources. Tin was much lessmon than lead and is only marginally harder, and had even less impact by itself. Sintering is a process used to agglomerate iron ore fines in preparation for blast-furnace smelting, and is usually carried out at iron and steelmaking centres. It involves the incorporation of crushed limestone, coke and other additives available from iron and steelmaking operations. These additives include wastes extracted from furnace exhaust gases, scale produced during rolling mill operations, and coke fines produced during coke screening. Blast furnaces differ from bloomeries and reverberatory furnaces in that in latter, flue gas is in intimate contact with the iron, allowing carbon dioxide to dissolve in the iron, which lowers the melting point and changes the iron into pig iron. The intimate contact of flue gas with the iron causes contamination with sulfur if it is present in the fuel. Historically, to prevent contamination from sulfur, the best quality iron was produced with charcoal. After tin and lead, the
Views: 239 Ishara Jessie
Mt Marion Overview
 
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Overview of operations at Mt Marion mine site.
The Making of Aluminium
 
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Views: 64994 dian mughni
Tell Rio Tinto to STOP precarious work
 
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Around the world, Rio Tinto is attacking permanent jobs. They are stripping workers of pay and entitlements by moving them onto precarious contracts, leaving them vulnerable. STOP workers from being chewed up by the global mining giant. Tell Rio Tinto to STOP precarious work.
Views: 1304 CFMEUMINING