Q. 365.0( 1 Vote )
Why is sulphide ore of copper heated in a furnace after mixing with silica?
Sulphide ore of copper is heated in a furnace after mixing with silica because the iron impurities present in the ore can form a slag with silica and will be easily removed. The copper is produced as copper matte.
FeO + SiO2→ FeSiO3(slag)
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