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Gold Bulletin

, Volume 38, Issue 4, pp 170–179 | Cite as

The role of ligands and oxidants in thiosulfate leaching of gold

  • Gamini Senanayake
Open Access
Scientific Papers

Abstract

The widely used cyanidation technology is not applicable to some gold ores due to economic or technical reasons when the cyanidation gives very low gold extractions. Despite the fact that the gold mining industry accounts for only 13% of total cyanide consumption there is growing public concern over the use of toxic cyanide for gold extraction. Many researchers have identified that thiosulfate leaching is the most likely alternative to cyanidation due to nontoxicity, low cost and other benefits. This article describes the current information on stoichiometric relationships, equilibria, reaction rates and mechanisms related to anodic or chemical oxidation of gold in thiosulfate, ammoniacal thiosulfate and ammoniacal copper(II) thiosulfate solutions in the presence or absence of oxygen.

Keywords

Thiosulfate Tetrathionate Gold Bulletin Gold Extraction Gold Oxidation 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© World Gold Council 2005

Authors and Affiliations

  • Gamini Senanayake
    • 1
  1. 1.A.J. Parker Cooperative Research Centre for Hydrometallurgy, Department of Mineral Science and Extractive MetallurgyMurdoch UniversityPerthAustralia

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