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6.17 Why copper matte is put in silica lined converter?

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The copper matte composed of Cu_{2}S and FeS. It is put in a silica-lined converter to remove the remaining ferrous oxide (FeO) and ferrous sulphide (FeS) present in copper matte as slag (FeSiO_{3})

Some silica is also added and hot air blast is blown to convert the remaining (FeS,FeO \&\ Cu_{2}S/Cu_{2}O) to the metallic copper.

\\2FeS+3O_{2}\rightarrow 2FeO+2SO_{2}\\ FeO+SiO_{2}\rightarrow FeSiO_{3}\\ 2Cu_{2}S+3O_{2}\rightarrow 2Cu_{2}O+2SO_{2}\\ 2CU_{2}O+Cu_{2}S\rightarrow 6Cu+SO_{2} 

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manish

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