Manufacture of chrome oxides, potassium chromate, chrome yellow pigment, Surface passivation of steel, Manufacture of welding rods,
matches, Chromic potassium sulfate and chemical reagents.
Generally speaking, the anode USES aluminum or aluminum alloy as the anode, while the cathode takes the lead plate, and puts the aluminum and lead plate together in an aqueous solution, which contains sulfuric acid,
oxalic acid, Chromic acid, etc., for electrolysis, to
form an oxidation film on the surface of aluminum and lead plate.