Question

how to copper refining​

Answer 1

Answer:

In electrolytic refining of copper, impure metal is used as anode, a strip of pure metal is used as cathode and soluble salt of metal is used as electrolyte. On passing electric current through electrolyte, cations move towards cathode, gain electrons and pure metal gets deposited on cathode.

The impurities left behind at anode called anode mud contains valuable metals such as gold and silver which can be recovered in the native state