Thiourea-thiocyanate leaching system for gold

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Publication Type Manuscript
School or College College of Mines & Earth Sciences
Department Metallurgical Engineering
Creator Miller, Jan D.
Other Author Yang, Xiyun; Moats, Michael S.; Wang, Xuming; Shi, Xichang; Xu, Hui
Title Thiourea-thiocyanate leaching system for gold
Date 2010-01-01
Description The leaching of gold in thiourea-thiocyanate solutions has been studied by the rotating-disk technique using ferric sulfate as oxidant. The effects of initial concentrations of ferric, thiourea (Tu) and thiocyanate as well as temperature and pH values on gold leaching rates were studied. An initial gold leaching rate in the order of 10-9 mol cm-2 s-1 was obtained at 25℃, which was higher than rates obtained when either ferric-thiocyanate or ferric-thiourea solutions were used separately. The synergistic effect was attributed to the formation of a mixed ligand complex Au(Tu)2SCN. Determinations of apparent activation energy indicate that the process was controlled by a combination of chemical reaction and diffusion in the mixed lixiviant system. Open circuit potentials show that thiocyanate stability is increased in the mixture.
Type Text
Publisher Elsevier
Volume 106
Issue 1-2
First Page 58
Last Page 63
DOI http://dx.doi.org/10.1016/j.hydromet.2010.11.018
Dissertation Institution University of Utah
Language eng
Bibliographic Citation Yang, X., Moats, M. S., Miller, J. D., Wang, X., Shi, X., & Xu, H. (2010).Thiourea-thiocyanate leaching system for gold. Hydrometallurgy, 106(1-2), 58-63. Feb.
Rights Management (c) Elsevier ; Reprinted from Yang, X., Moats, M. S., Miller, J. D., Wang, X., Shi, X., & Xu, H. (2010).Thiourea-thiocyanate leaching system for gold. Hydrometallurgy, 106(1-2), 58-63. Feb.
Format Medium application/pdf
Format Extent 1,153,204
Identifier uspace,15292
ARK ark:/87278/s6086q07
Setname ir_uspace
Date Created 2012-07-26
Date Modified 2021-05-06
ID 707579
Reference URL https://collections.lib.utah.edu/ark:/87278/s6086q07
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