MetallurgyHard

Question

Roasting of copper pyrites is done :

Options

A.to remove moisture.
B.to oxidise free sulphur and antimony.
C.to convert pyrites completely into Cu2O and FeO.
D.to remove volatile organic impurities.

Solution

(C) is incorrect statement as 2CuFeS2 + 4O2 Cu2S + 2FeO + 3SO2.

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