Abstract
Coupled dissolution of metals, metal sulfides, and certain electron conducting oxides require an oxidant and in some cases both an oxidant and a complexing agent. Oxidants may be oxygen, ferric ion, peroxide or some other suitable oxidizing reagent. Typical complexing agents are cyanide ion in the case of gold, silver, and copper, ammonia/ammonium ion in the case of copper, and carbonate in the case of UO2. Experimental methods and results obtained for the initial dissolution of chalcocite in acid ferric sulfate solutions are presented. The separate anodic and cathodic processes are quantified using an electroless configuration with graphite as an inert cathode. The method described may be used to separate electrode processes involved in the leaching of a variety of electron conducting minerals.
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© 1984 Springer Science+Business Media New York
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Wadsworth, M.E., Zhong, TK. (1984). Coupled Rate Control in the Dissolution of Electron Conducting Minerals. In: Bautista, R.G. (eds) Hydrometallurgical Process Fundamentals. NATO Conference Series, vol 10. Springer, Boston, MA. https://doi.org/10.1007/978-1-4899-2274-8_7
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DOI: https://doi.org/10.1007/978-1-4899-2274-8_7
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