Question

Which type of ores are concentrated by froth flotation process?

• A. Carbonates
• B. Sulphides
• C. Oxides
• D. Phosphates

Answer 1

Answer: (B)

Sulphides

The froth flotation method is used to separate and concentrate ores by altering their surfaces to a hydrophobic or hydrophilic condition.

This method is based on the principle of the difference in the wetting properties of the ore and the gangue particles with the water and oil.

Therefore,sulphide ores preferably wetted by the oil and the gangue with the water.

Hence, option $\left(B\right)$ is correct.