Question

Extraction of copper from copper pyrite $\left(CuFe{S}_2\right)$ involves:

• A. Crushing followed by concentration of the ore by froth flotation
• B. Removal of iron as slag
• C. Self-reduction step to produce ‘blister copper’ following the evolution of $S{O}_2$
• D. Refining of ‘blister copper’ by carbon reduction

Answer 1

Answer: (A), (B), (C)

The correct options are
A Crushing followed by concentration of the ore by froth flotation
B Removal of iron as slag
C Self-reduction step to produce ‘blister copper’ following the evolution of $S{O}_2$

The refining of blister copper is done by poling technique.