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Use of leaching during the concentration...

Use of leaching during the concentration of ore.

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Leaching is a method in which ore is soaked in a certain soltuion for a long time.
(ii) The ore dissolves in that solution due to specific chemical reaction.
(iii) The gangue does not react and therefore does not dissolve in that solution.
(iv) During the concentration of ore, separation of impurities is done by leaching process using either Bayer's method of Hall method.
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