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从铜、铅阳极泥中回收贵金属,是我国当前生产贵金属的重要手段。国内绝大多数的工厂,均采用传统的火法工艺流程处理阳极泥。火法处理阳极泥,历史悠久,技术成熟,金、银的回收率都比较高,金的回收率一般在95～97%,个别最好的工厂为98～99%,银的回收率为93～98%。但是,火法处理阳极泥的生产周期长,一般都在4～6个月,有些工厂甚至一年才能组织一次生产,只有沈冶在30～40天之内。同时,在熔炼贵铅和贵铅的氧化精炼过程中,产生大量的铅蒸汽,污染环境,影响工人身体健康。
The recovery of precious metals from copper and lead anode slime is an important measure for the current production of precious metals in our country. The vast majority of domestic factories, are using the traditional fire process anode mud. It has a long history and mature technology. The recovery rate of gold and silver is relatively high. The recovery rate of gold is generally 95-97%. Some of the best plants are 98-99%. The recovery rate of silver is 93% ~ 98%. However, the production of anode slime by the fire method has a long production cycle, usually 4 to 6 months. Some factories even organize production once in a year, with only 30 to 40 days being carried out. At the same time, during the process of the oxidation and refining of expensive lead and expensive lead, a large amount of lead vapor is generated, polluting the environment and affecting workers’ health.