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EFFECTIVE EXTRACTION OF GOLD AND SILVER FROM SULPHIDIC ORE BY CYANIDE-THIOSULFATE SOLUTIONS

Aigul Koizhanova

First published: 2011-06-20https://doi.org/10.5593/sgem2011/s03.116View metrics

Abstract

We present the results of precious metals leaching from stubborn sulphidic silver-and- gold-containing ore of Kazakhstani deposit Kunisty by complex cyanide в€’thiosulphate solutions in comparison with separate cyanide and thiosulphate solutions in the model and experimental conditions. It is establis hed, that in a range of investigated concentrations 0,03 - 0,1 M, application of complex cyanide в€’thiosulphate solutions leads to change of oxidation-reduction potential of the solutions by 50Г·200 mV. The degree of leaching of precious metals increases on average by 10 %, when complex cyanideв€’thiosulphate solutions are used in comparison with the separate ones.

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Publication details

Title
EFFECTIVE EXTRACTION OF GOLD AND SILVER FROM SULPHIDIC ORE BY CYANIDE-THIOSULFATE SOLUTIONS
Authors
Aigul Koizhanova
Proceedings
SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; SGEM2011 11th International Multidisciplinary Scientific GeoConference
Publisher
Stef92 Technology
Year
2011
Pages
Not available yet
ISSN
1314-2704
ISBN
Not available yet
Language
en
Publication type
Conference Paper
Keywords
goldsilvercyanidethiosulphateoxidation-reduction potential
References4

  1. Begalinov A., Yakovlev A.P. et al. Thiosu lphate-assisted gold leaching. Theory and practice, Almaty, 2001, 254 p;

  2. NakamotoК. “Infrared spectra of inorga nic and coordination compounds”, М, 1966, 266 p;

  3. KharitonovYu.A., Ю.А., Evstafieva O.N. “Empiric generalities concerning vibrations of coordinated cyanogroups”, Jour nal of Inorganic Chemistry, t. XIV, Issue 3, pp. 125-220, 1969.

  4. Bolotova L.S., Gladyshev V.P. “Metals be havior features in processes of gold and silver recovery from cyanide solutions by ion-exchange technologies”, KIMS, no. 3, pp 29-33, 1982.

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