State briefly the principle involved in the following operations in me – InterviewSolution

1.	State briefly the principle involved in the following operations in mettalurgy. Give an example. Hydraulic washing.
Answer» Solution :This method of separation is based UPON th difference in GRAVITIES of the ore and the gangue particles. An UPWARD stream of running water is used to wash the powdered ore. The lighter gangue particles are washed away and the heavier ore particles are left behind. The method is used to separate impurities from the ores of IRON and copper.

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