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五、铅因火法炼铅环境污染严重,引起了人们对湿法的希望,故在70年代及80年代初有关湿法炼铅的报导较多。经过许多的研究结果证明,湿法炼铅的成本高于火法,这就使湿法炼铅没有能大规模地在工业上实现。目前湿法炼铅还是处于实验室及少量的小规模的生产阶段。目前硫化铅用湿法处理的方案较多,归纳起来约有以下方案:(1)氯化铁浸出,氯化铅水溶液隔膜电解;
Fifth, lead pollution due to fire lead serious environmental pollution, causing people’s hope for wet method, so in the 70’s and early 80’s wet lead smelting more reported. After many research results show that the cost of wet lead smelting is higher than the fire method, which makes the wet lead smelting can not be achieved on a large scale in industry. Currently wet lead smelting is still in the laboratory and a small amount of small-scale production. At present, there are many schemes for treating lead sulfide with wet process, and the following solutions are summed up: (1) leaching of ferric chloride, membrane electrolysis of aqueous lead chloride solution;