Method for purifying copper, cadmium, lead, and tin from ammonia-leached zinc solution
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Besides the method of using zinc powder to replace copper, lead, cadmium, and tin in ammonia-removal leached zinc solutions, what are some other cost-effective purification methods for separating copper, lead, cadmium, etc.?
Add a vulcanizing agent and use vulcanization precipitation; it’s necessary to control this properly.
The first step is to use zinc powder, and then using sodium sulfide is a fairly good method.
This post was last edited by cy1125915 on 2016-1-22 09:50. Using a vulcanizing agent isn’t very effective; the desired results are not achieved, and there is significant loss of zinc
Around 50 g/L of Zn, and around 8 g/L of Pb. The zinc content is much higher than that of lead; the sulfiding agent reacts first with zinc, and then zinc sulfide undergoes a reaction with lead ions