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

Options

A. `Cu_(2)O + FeS`
B. `FeSiO_(3)`
C. `CuFeS_(2)`
D. `Cu_(2)S + 2FeS + SO_(2)`

Answer

b

Explanation

`2CaFeS_(2) + O_(2) rarr CaS + 2FeS + SO_(2)`
`2FeS + 3O_(2) rarr 2FeO + 2SO_(2)`
`FeO + SiO_(2) rarr FESiO_(3) (Siag)`
Copper is the most nuble of the first row transister metakls and occare in small deposite `(CaFeS_(2))` bornite `(CVaS,CaS , FeS)(Cu_(2)C)(OH)_(3)) caprite (Cu_(2)O)` copper galnces `(Ca_(2)S)` and malachile `[CuFeS_(2)] `
However `80%` of the world copper production comes from the ore of chalcopytic `(CuFeS_(2))` the exteraction of copper from chalopyrite involves parial roasting removed of iron and salt reduction .