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用硫化精矿作为生产金属铅的原料时,通常采取精矿的烧结焙烧、鼓风炉熔炼及粗铅电解精炼流程,目前世界上用这种方法生产的粗铅占总量的90％以上。我厂也采取此一作业程序。几年来由于加强技术管理,突破了生产上一系列的关键,铅的冶炼回收率得到了逐年提高,如表1。影响冶炼回收率的因素极多,最主要是:渣含金属的损失,因生产管理不当而造成含铅物料的飞扬和尘散损失及废气带走和电解跑酸漏液损失等。根据生产实践资料,铅在冶炼各工序的分配情况载于表2。
When sulfurized concentrate is used as the raw material for producing metallic lead, roasting and sintering of concentrate, blast furnace smelting and crude lead electrolytic refining are generally taken. At present, crude lead produced by this method occupies over 90% of the total in the world. I also take this factory operating procedures. Over the past few years as a result of strengthening technical management, breaking the production of a series of key, smelting lead recovery rate has been increased year by year, as shown in Table 1. The factors that affect smelting recovery rate are many, the most important ones are: the loss of slag-containing metal, the loss of flying lead, the loss of dust, the loss of exhaust gas and the loss of acid leaking due to improper production management. According to the production practice data, the distribution of lead in the smelting process is shown in Table 2.