Question

The chemical composition of slag formed during the smelting process in the extraction of copper is

• A. ${\text{Cu}}_{\text{2}}\text{O}\text{+}\text{FeS}$
• B. ${\text{FeSiO}}_{\text{3}}$
• C. ${\text{CuFeS}}_{\text{2}}$
• D. ${\text{Cu}}_{\text{2}}\text{S}\text{+}\text{FeO}$

Answer 1

Answer: (B)

In the smelting process of copper from copper pyrites the following reactions takes place
${\text{Cu}}_{\text{2}}\text{O}\text{+}\text{FeS}\to {\text{Cu}}_{\text{2}}\text{S}\text{+}\text{FeO}$
$\text{2FeS}\text{+}{\text{3O}}_{\text{2}}\to \text{2FeO}\text{+}{\text{2SO}}_{\text{2}}$