Electrowinning of copper in the presence of anodic depolarisers - a review

Subbaiah, T., Singh, P., Hefter, G., Muir, D. and Das, R.P. (2000) Electrowinning of copper in the presence of anodic depolarisers - a review. Mineral Processing and Extractive Metallurgy Review, 21 (6). pp. 479-496.

Abstract

Alternative anodic reactions have been investigated to reduce the cell voltage and hence energy consumption in the electrowinning of copper. It is necessary to avoid oxygen evolution reaction at the anode, which requires a high potential of 2 V in order to reduce the cell voltage. An extensive literature review reveals that the cell voltage can be reduced by using various ionic couples, such as Fe2+/Fe3+, Cu2+/Cu1+. Addition of cobalt, soluble sulfites and sulfur dioxide to the electrolyte modifies the anodic reaction. Examination of several electrode materials for anodic oxidation confirms that graphite is the most suitable material. Some fundamental studies on the anodic oxidation of sulfur dioxide have also been reviewed.

Item Type:	Journal Article
Murdoch Affiliation(s):	School of Chemical and Mathematical Science
Publisher:	Gordon & Breach Science Publ Inc
URI:	http://researchrepository.murdoch.edu.au/id/eprint/1196

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