recovery of silverfrom silver scrap 银废料回收银
recovery of lead and silver 回收铅银
recovery of gold and silver 中浸出金和银的
Thus, this process has well realized the comprehensive valuable element recovery of silver, gallium, iron, zinc etc.
该工艺较好地实现了银、镓、铁、锌等有价元素的综合回收。
The features of the method are labor intensity low, operating easily, the recovery of silver and purity of product silver high.
新方法操作简单，劳动强度低，银回收率高，产品纯度高。
The recovery of silver from waste electronic parts by two-step electrolysis method with rotary cylinder as cathode is discussed.
研究了用旋转圆筒作阴极，二步电解法回收废电子元器件中的银。
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