When do we use handpicking and washing methods in our daily Give, examples? How do you correlate, these examples with enrichment of ore?

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Hand pickling:

Hand pickling can be used for cleaning rice, cereals, grading of vegetables and fruits etc., in our day to day daily life.

In the ore, particles and the impurities are different in their shape, size, colour etc., using that property, the ore particles are handpicked separating them from other impurities.

Washing:

1) Washing can be used in our daily life to separate the impurities from cloth, rice, cereals etc.

2) In this process ore particles are at first crushed and kept on a soapy surface they are then washed with a controlled flow of water. Less dense impurities are carried away by water flow, leaving the more dense ore particles behind.