Iron ore tailings may contain large amount of SiO2 Si Fe2O3 Fe3O4 Fe OH and traces of Hg Se Cu Pb Zn As Mn etc that are harmful to humans even at low levels Liberia is a West
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Get PriceChromium is the brittle lustrous and hard chemical element that belongs to the group of spinel Chromite grains are commonly found in large mafic intrusions and are also found in metamorphic rocks on the earth s crust Chromite which is an iron chromium oxide FeCr2O4 is the only ore present to produce the element chromium
Get PriceTo produce cast iron the iron must be extracted from iron ore The ore is smelted in a blast furnace where it separates into pig iron and slag The furnace is heated to around 1800 degrees Celsius in an oxygen atmosphere and the slag formed rises to the top and can be removed The molten pig iron below contains around 3 wt % 5 wt % carbon
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Get PriceCopper is produced from copper sulfate solution by displacement using iron or by Suggest one reason why it is difficult to dispose of waste rock from copper ore extraction oxygen to produce sulfur dioxide / SO₂ that causes acid rain When copper reacts in a furnace this causes environmental pollution Explain how any one from
Get PricePig iron is produced by smelting or iron ore in blast furnaces or by smelting ilmenite in electric furnaces Pig iron is supplied in a variety of ingot sizes and weights ranging from 3 kg up to more than 50 kg The vast majority of pig iron is produced and consumed within integrated steel mill complexes In this context the term pig iron
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Get Pricesteam irons batteries in clocks and pocket calculators switches LCDs State Pollution Control Boards were made responsible for enforcement of the guideline covered around 300 offices across India of Extraction of precious metals is the hazardous process which
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Get PriceEnvironmental impacts Of extracting Irons Source Chemistry Textbook pg 244 Extraction of iron from Hematite During the process carbon dioxide is produced along the process of reducing hematite to iron Carbon dioxide and water vapor have important roles to play in maintaining a fairly uniform temperature on the Earth s surface
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Get PriceIron is extracted from iron ore in a huge container called a blast furnace Iron ores such as haematite contain iron III oxide Fe2O3 The oxygen must be removed from the iron III oxide in
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Get PriceHot blast patented by James Beaumont Neilson in 1828 was the most important development of the 19th century for saving energy in making pig iron By using waste exhaust heat to preheat combustion air the amount of fuel to make a unit of pig iron was reduced The supply of cheaper iron aided a number of industries
Get PriceHaematite and magnetite are the most commonly found iron ore minerals The smelting process allows the iron ore to be heated with carbon The carbon combines with the oxygen and carries it away leaving behind iron Blast furnaces are so hot which is why they melt the iron and drain it off to be poured into moulds to form bars called ingots
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Get PriceCalculate the weight in tons of pig iron that could be produced if all of the estimated global iron ore reserves were used for pig iron production 1 2 billion tons of pig iron divided by 1 6 billion tons of iron ore times 800 billion tons of iron ore = 600 billion tons of iron Calculate the weight in tons of the current global iron ore
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