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Silica

Why is sulphi...

Question

Why is sulphide ore of copper heated in a furnace after mixing with silica?

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Solution

Iron oxide present as impurity in sulphide ore of copper forms slag which is iron silicate and copper is produced in the form of copper matte.

$F e O + S i O_{2} \to F e S i O_{3}$

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Why is sulphide ore of copper heated in a furnance after mixing with silica?

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