Extraction of Copper Reactions

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Roasting: $$2CuFeS_2 + O_2 \rightarrow Cu_2S + 2FeS + SO_2$$

Slag formation: $$FeO + SiO_2 \rightarrow FeSiO_3$$

Bessemerization: $$2Cu_2S + 3O_2 \rightarrow 2Cu_2O + 2SO_2$$
$$2Cu_2O + Cu_2S \rightarrow 6Cu + SO_2$$

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