Question

On what principle froth floatation process is based?

Describe the principle of froth floatation process.

Answer 1

The froth flotation process is based on the following principles:

1. Ore particles are preferentially wetted by oil, while gangue particles are wetted by water.
2. Frothing agents form a stable froth on the slurry surface.
3. Collectors make ore particles water repellent and help them attach to air bubbles.
4. Ore particles stick to air bubbles and rise to the top with the froth.
5. Impurities settle at the bottom and are separated from the froth containing concentrated ore.

This principle exploits the difference in surface wettability of ore and gangue particles.