Name two important ores of copper and discuss the principles of extraction of copper from it's pyrite ore
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Copper is extracted from copper pyrites. After roasting, the ore is mixed with silica and coke and then smelted in a blast furnace. The matte obtained from the blast furnace is charged into a silica lined converter.
After roasting, the ore is mixed with silica and coke and then smelted in a blast furnace. Some silica is also added and a hot air blast is thrown into the mixture to obtain blister copper which is purified by electrorefining
Explanation:
Name Formula % Copper when pure
Chalcopyrite CuFeS2 34.5
Chalcocite Cu2S 79.8
Covellite CuS 66.5
Bornite 2Cu2S·CuS·FeS 63.3
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