【摘要】 在银电解过程中增加高铜、铅阳极的一次电解;高铅金粉的湿法除铅;电解液的硫酸沉铅等三道工序,可生产符合国标要求的1~#银粉和1~#电金。此工艺操作简便,国标1#银粉一次合格率达90％以上,1~#电金品率100％,且消除了流程中的铅害。更多还原

【Abstract】 The Grade 1 silver powder and Grade 1 gold can be produced from silver anode with high Cu and Pb content by adding the following 3 processes: silver anode pre-electrolysis, high lead content gold powder hy-drometallurgy de-leading, and lead sinking from electrolyte using sulphuric acid. The results show that the primary Grade 1 silver powder is more than 90 % and Grade 1 gold is 100 % , on the other hand, the lead harm is eliminated.更多还原