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钖矿常伴生着铅,有的甚至铅钖共生。锡精矿含铅成为炼锡厂要解决的一个重要问题。我国炼锡厂采用的流程是:粗锡用结晶法除铅,附产焊锡(含～35%Pb),焊锡用氯化物电解液电解得精锡,又附产氯化铅阳极泥,再用反应炉制成氯化亚锡和粗铅,氯化亚锡送电解工段使用。这个流程能使焊锡中的铅分离出来,并综合回收铟、铅等金属。但存在几个问题:流程长、车间庞大劳动条件较差,消耗多、生产费用较高。
钖 mine often associated with lead, some even lead 钖 symbiosis. Tin concentrate lead into tin smelter to solve an important issue. The process used in China’s smelting tin factory is: the crude tin is removed by the crystallization method by using the crystallization method, the soldering tin (with ~ 35% Pb) is added, the tin is electrolyzed by the chloride electrolyte solution and the lead chloride anode mud is added, Reaction furnace made of stannous chloride and lead, tin chloride electrolysis section to use. This process can lead the solder in the separation of lead, and a comprehensive recovery of indium, lead and other metals. However, there are several problems: the process is long, the workshop has a lot of labor conditions, consumes more and the production cost is higher.