MCQ
Froth floatation process is used for the:
- AOxide ores
- ✓Sulphide ores
- CChloride ores
- DAll of these
✓
Answer
Correct option: B.
Sulphide ores
Froth floatation process is used for the sulphide ores. In this method, wetting of the ore by an oil takes place. A strong current of air is blown through the suspension, producing a heavy froth or foam on the surface. The metal sulphide is wetted by the oil but the gangues is not and the sulphide$-$oil mixture is carried to the surface by films of oil The froth is skimmed off, the gangue settles down on the bottom or remains underneath the froth.
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