_______________ is used as a flux in the smelting of copper ore like chalcopyrite ?
Correct answer: A. Silica/quartz
- A. Silica/quartz
- B. Lime powder
- C. Coke breeze
- D. Dolomite
Explanation
Silica or quartz acts as an acidic flux in copper smelting by combining with iron oxide impurities to form a fusible iron silicate slag. Lime is more commonly used to flux acidic impurities in other smelting systems.
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