Which of the following methods is based on the principle of the difference in the wetting properties of the ore and gangue particles with water and oil?
Froth flotation process
The gangue particles present in the ore have different solubility or wettability than the ore in oil and water. So, this factor can be used to remove the gangue particles from the ore.
Explanation for correct option:
(B) Froth-Flotation Process
It is based on the principle of the difference between the wetting properties of the ore and the gangue particles with water and oil.
Explanation for incorrect options:
(A) Magnetic Separation
In magnetic separation, magnetic materials are attracted by a magnet to separate from mixtures. The process of magnetic separation separates magnetic materials from nonmagnetic materials.
(C) Hydraulic Washing
The ore is concentrated using this method by flowing it through an upward stream of water, separating the lighter gangue particles from the heavier metal ore.
Therefore, the correct option is (B).