Enhanced ferric sulphate leaching of copper from CuFeS2 and C particulate aggregates

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Publication Type Journal Article
School or College College of Mines & Earth Sciences
Department Metallurgical Engineering
Creator Miller, Jan D.; Wan, Rong Yu
Other Author Simkovich, G.
Title Enhanced ferric sulphate leaching of copper from CuFeS2 and C particulate aggregates
Date 1984
Description Significantly faster leaching kinetics for ferric sulphate are achieved for particulate aggregates of CuFeS2 and C than for CuFeS2 itself. The effect of carbon particles upon the rate of dissolution of chalcopyrite has been increased by a factor of 4 (after 10 hours' leaching), depending upon the carbon type, which varies in electronic conductivity and particle size. Interestingly, when the carbon content is reduced, even to 2 per cent, the enhanced leaching by ferric sulphate is sustained. The leaching characteristics of aggregates of CuFeS2 and C are described from reaction-rate experiments, conductivity measurements, and scanning-electron-microscope photographs of the elemental-sulphur reaction product. The results provide further evidence for the kinetic significance of the elemental-sulphur reaction-product layer in the leaching of chalcopyrite by ferric sulphate. Rate control by surface reaction is extended in the presence of carbon particles, but eventually the rate appears to become limited by the transport of electrons through the elemental-sulphur reaction-product layer, as was suggested in previous studies.
Type Text
Publisher Mintek
First Page 575
Last Page 588
Subject Reaction; Chalcopyrite; Electrochemical
Language eng
Bibliographic Citation Wan, R. Y., Miller, J. D., & Simkovich, G. (1984). Enhanced ferric sulphate leaching of copper from CuFeS2 and C particulate aggregates in Proceedings of MINTEK 50: an International Conference on Recent Advances in Mineral Science and Technology, Johannesburg, South Africa, 2, 575-88.
Rights Management (c)Mintek
Format Medium application/pdf
Format Extent 10,378,765 bytes
Identifier ir-main,4392
ARK ark:/87278/s6br99md
Setname ir_uspace
Date Created 2012-06-13
Date Modified 2021-05-06
ID 705605
Reference URL https://collections.lib.utah.edu/ark:/87278/s6br99md
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