Processing double refractory gold-arsenic-bearing concentrates by direct reductive melting

Seitkan, Ainur and Redfern, Simon A. T. (2016) Processing double refractory gold-arsenic-bearing concentrates by direct reductive melting. Minerals Engineering, 98. pp. 286-302. ISSN 0892-6875 DOI 10.1016/j.mineng.2016.08.017

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Official URL: http://doi.org/10.1016/j.mineng.2016.08.017

Abstract

Iron arsenides may be the key to extraction of gold from existing refractory ores such as that at Bakyrchik, Kazakhstan, an ore body containing an estimated £8.5 billion reserve of gold. Gold is not extractable without significant ecological contamination from the associate arsenopyrite mineralisation. A new method for gold recovery from refractory gold-arsenic-bearing materials, based on direct reductive melting (DRM) of the concentrate has been developed, which locks As into relatively benign iron arsenide phases, whilst gold is extracted into lead alloy. The method has been filed as a patent with the Patent Office of the Republic of Kazakhstan.

Item Type: Article
Uncontrolled Keywords: 2016AREP; IA71
Subjects: 03 - Mineral Sciences
Divisions: 03 - Mineral Sciences
08 - Green Open Access
Journal or Publication Title: Minerals Engineering
Volume: 98
Page Range: pp. 286-302
Identification Number: 10.1016/j.mineng.2016.08.017
Depositing User: Sarah Humbert
Date Deposited: 19 Dec 2016 18:26
Last Modified: 19 Dec 2016 18:26
URI: http://eprints.esc.cam.ac.uk/id/eprint/3789

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