North West German refinery output lead of crude lead by first vacuum dezincification, after removal of zinc and lead containing 0.05% to 3.5% bismuth, the bismuth-containing lead to dezincification than 3.5%, directly cast anodic electrolysis, separated铋 and lead, and for dezincification and lead containing less than 3.5% of bismuth, the method of adding calcium and magnesium to remove bismuth, the sorghum slag is melted and then alkaline refined, and the Pb-Bi anode produced contains 4% to 8%. , copper 0.005% ~ 0.01%, silver 50 g / ton, separated by electrolysis, Pb70 g / liter in the electrolyte, Cu < 0.002 g / liter, Bi < 0.002 g / liter, the output of the anode mud B188% ~ 90 %, Pb2% ~ 4%, Cu 0.06%, as a raw material for refining refined fines, the process flow is shown in Figure 1. Figure 1 Process of recycling 北 in the North German lead refinery This process is characterized by the use of electrolytic refining for dezincification lead with high bismuth (Bi>3.5%) and desulfurization of lead with low bismuth (Bi<3.5%) by pyrometallurgical refining from Pb-Bi electrolysis. Refined recovery of ruthenium in anode mud. Ningbo Yejin Supply Chain Management Co.,Ltd , https://www.car-parts-accessories.com