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由于含铅锡精矿经还原熔炼所产生粗锡中含有一定数量的铅。用凝析法精炼锡时,产出相当数量含铅30％左右的铅锡合金;其中少部分直接作为焊锡销售外,绝大部分将进一步处理,分别生产精锡和铅。目前采用氯化亚锡盐酸电解液,以此种合金为阳极,进行龟解精炼,生产99.95％的精锡,已是我国处理此种合金的通用方法。以氯化亚锡盐酸溶液为电解质,虽有阴极锡的析出物为松散的毛状,使电解操作稍繁的缺点,但此种电解液适合处理含铅较高的铅锡合金,且电解液制备简单、
Due to lead-tin concentrate produced by the reduction of smelting crude tin contains a certain amount of lead. When condensing tin by condensing method, a considerable amount of lead-tin alloy containing about 30% of lead is produced. A small part of the tin-lead alloy is directly sold as a solder and most of them will be further processed to produce fine tin and lead respectively. At present, the use of stannous chloride hydrochloride electrolyte, with this alloy as the anode, decontamination, production 99.95% of the fine tin, is China’s common method of handling such alloys. The stannous chloride hydrochloric acid solution is used as an electrolyte. Although the precipitates of the cathode tin are loosely hair-like, the electrolysis operation is a little more disadvantageous. However, the electrolyte is suitable for processing the lead-tin alloy with higher lead content, and the electrolyte solution Preparation is simple,