Question

The principle behind froth floatation is the difference in the ________of the ore and the gangue particles.

• A. wettability
• B. specific gravity
• C. solubility
• D. weight

Answer 1

The correct option is A

wettability

Froth floatation process depends on the wettability of both ore particles and impurities. It is used for the concentration of sulphide ores.

$\bullet$ Ore particles along with impurities is poured into a mixture of oil and water.

$\bullet$ Ore particles are wetted by oil and floats as froth.

$\bullet$ Gangue particles are wetted by water and settle down.