In electrolytic refining method

In electrolytic refining method, the impure metal is made to act as anode. A strip of the same metal in pure form is used as cathode. They are kept in a suitable electrolytic both containing soluble salt of the same metal. The more basic metal remains in the solution and the less basic ones go to the anode mud.Anode M⟶Mn++ne− Cathode Mn++ne-→M