Give the principles of:

(a) hydrolytic method, (b) froth floatation,

(c) electromagnetic separation.

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Solution

(a) Hydraulic washing: The difference in the densities of the ore and the gangue is the main criterion.
(b) Forth floatation: This process depends on the preferential wettability of the ore with oil and the gangue particles by water.
(c) Electromagnetic separation: Magnetic properties of the ores.

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Give the principles of:

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