Electrodeposition: Details of anode plate passivation
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How to passivate newly purchased lead anodes for electrowinning copper? With 1-2 months of parking, the cathodic stainless steel plate falls out – what about the lead anode? What needs to be done in the groove to protect it? What should be done for disposal? How should it be stored? Please give me some guidance, senior
This post was last edited by 863711572 on 2016-7-13 at 15:25; using a stainless steel plate as the cathode ensures that the quality of the material won’t be that poor； If you’re bold, just ignore it; nothing bad will happen. If you’re scared, empty the electrowinning cell.
What components are contained in this solution?
Sulfuric acid: 170 g/L, copper: 45 g/L, fluoride: 30 mg/L, chlorine: 40 mg/L, trace amounts of oil, cobalt: 30 mg/L, iron: 200 mg/L, nickel and zinc as well
It’s for waste recycling – so why are the levels of fluorine and chlorine so high? It seems impossible to electrolytically produce first-grade copper plates
It’s waste material; it’s quite mixed, and the cathode copper produced is very brittle and broken； The anode lead plates suffer significant wear.
This post was last edited by foam_ZPTK on 2019-7-21 at 22:00. With such high fluoride levels, I truly recommend using a titanium-based lead dioxide-coated anode; no other anode can withstand it