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प्रश्न
What is the role of silica in the extraction of copper?
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उत्तर
Ores of copper contain iron oxide as impurity. Silica reacts with iron oxide and forms iron silicate, which is removed as slag.
FeO+SiO2→FeSiO3
Iron oxide Silica Iron silicate
(Slag)
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संबंधित प्रश्न
Silica is added to roasted copper ore during smelting process to remove _______.
(A) ferrous sulphide
(B) ferrous oxide
(C) cuprous sulphide
(D) cuprous oxide
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