FIELD: chemistry.
SUBSTANCE: method involves anodic dissolution of tin and lead in a molten electrolyte of zinc, potassium and sodium chlorides, and depositing lead and tin on the wall of the cathode bath. The process is carried out while blowing the starting alloy with air and periodically adding ammonium chloride into the electrolyte by ejection feeding. The electrolysis cell has a lined heated cathode bath in which there is an anode cup with an insulated graphite current lead. The graphite current lead is hollow and has a nozzle with a channel for feeding air to the bottom of the anode cup. The graphite current lead has in its lower part a disc with air distribution channels.
EFFECT: reduced sludge formation, easier maintenance and high quality of the product.
3 cl, 1 dwg
