Explain the role of SiO2 in the extraction of copper from copper matte – InterviewSolution

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1.	Explain the role of SiO2 in the extraction of copper from copper matte. Also, write the chemical equation.
Answer» During the process of extraction of pure copper from copper pyrite,SiO2 acts as acidic flux which combines with iron oxide(FeO) to form iron silicate(FeSiO3). CuFeS2 + heat ---> Cu2s + FeS + SO2 FeS + O2 ----> Feo FeO + SiO2 ----> FeSiO3

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