Froth floatation process is based on-

Correct option is A

The correct answer is (a) Wetting of ore particles.
· The froth flotation process is used to separate hydrophobic materials (ore particles that repel water) from hydrophilic materials (particles that are attracted to water).
· Principle: The process involves the addition of chemicals that selectively attach to the surface of desired ore particles, making them water-repellent. These particles then attach to air bubbles and rise to form froth, which is skimmed off.
· This method is widely used for the concentration of sulphide ores like copper, lead, and zinc.
Key Points:
· Chemicals Used: Frothers, collectors, and depressants are added to enhance the separation.
· Specificity: It is particularly effective for sulphide ores.
· Process:
· Grinding of the ore into a fine powder.
· Addition of water and chemicals.
· Air is passed through the slurry, creating froth.