... the production of high purity 99.9% cathode copper through Electrowinning, also called electroextraction, is the electrodeposition ... . The metals can be treated with electrolytic refining, are copper, zinc, lead, gold, silver, aluminum, antimony, tin, nickel, bismuth ... supply is also used for electrolysis of potassium hydroxide, copper foil, salt solution, seawater desalination Electrodialysis(ED) etc ...