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Understanding Impurities In Copper Electrometallurgy, Paul Laforest
Understanding Impurities In Copper Electrometallurgy, Paul Laforest
Masters Theses
"This work involves examining two industrial reports of methods to handle impurities in copper electrowinning and electrorefining. The first part evaluates the addition of Hydrostar, Cyquest N-900, DXG-F7, and Guartec EW to copper electrowinning electrolyte to affect MnO2 deposition on coated titanium anodes (CTAs). The second part examines the effects of anode chemistry and thiourea addition on the ductility of electrorefined copper starter sheet.
In part one, a laboratory cell was used to simulate a short cycle electrowinning cell via chronopotentiometric operation with an IrO2-Ta2O5 CTA at 40⁰C. A cyclic voltammetric sweep was applied …