Chemistry
Give the principles of:
(a) Hydrolytic method
(b) Froth floatation process
(c) Electromagnetic separation
Metallurgy
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Answer
(a) Hydrolytic method — The difference in the densities of the ore and the gangue is the main criterion.
(b) Froth floatation process — The process depends on the preferential wettability of the ore with oil (pine oil) and the gangue particles by water .
(c) Electromagnetic separation — Magnetic properties of the ores.
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