... dust precipitation chamber 集尘室 electrical dust precipitation 电收尘法 Zinc dust precipitation 锌粉置换 ...
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从含高铜、铅、锌贵液中直接用锌粉置换回收金，效果差。
When gold is recovered from pregnant solution highly containing Cu, Pb, Zn by zinc dust precipitation, the effect is disappointing.
相反，当硫酸钴溶液中含锌离子时，锌粉置换除钻较难进行。
On the contrary, it is hard to remove cobalt from cobalt sulphate solutions containing zinc ions.
浸出渣用碳酸钠还原，再用硝酸分解金银合金，然后用锌粉置换银。
The leached out residue is reduced by sodium carbonate, then the gdd-silver alloy is decomposed by nitric acid, and finally zinc powder is used to replace silver.
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