When copperpyritesis roastedin excessof air, a mixtureofCuO + FeO isfo – InterviewSolution

1.	When copperpyritesis roastedin excessof air, a mixtureofCuO + FeO isformed. FeO is presentas impurity. This can beremovedas slagduringreduction ofCuO. The fluxadded to formslag is
Answer» ` SiO_2`, whichis an acidic FLUX LIMESTONE whichis abasicflux `SiO_2 `,whichisthebasicflux CaO,which isbasicflux. SOLUTION : ` SiO_ 2 `isusedasan acidicflux.

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