Question

What is the difference between electrolysis and electrolytic refining of metals ?

Answer 1

1. In electrolytic reduction graphite electrodes whereas in electrolytic refining, the anode is made of the impure metal which is to be purified and the cathode is made from that pure metal. 
2. Electrolyte used in electrolytic refining is the metal sulfate with acid (acid is usually added to increase the conductivity) whereas in electrolytic reduction molten chloride form of the solution is used