Concentration of sulphide ores is done usually by____________________?
Correct answer: C. Froth floatation
- A. Roasting
- B. Smelting
- C. Froth floatation
- D. Electromagnetic separation
Explanation
Sulphide ores are commonly concentrated by froth flotation because their sulphide particles preferentially attach to air bubbles and rise as froth. Roasting and smelting are extraction steps rather than the usual concentration method.
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