4.7 Article Proceedings Paper

A new method for determination of preg-robbing in gold ores

Journal

MINERALS ENGINEERING
Volume 18, Issue 12, Pages 1135-1141

Publisher

PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.mineng.2005.05.014

Keywords

precious metal ores; leaching

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A new method utilising standard additions of gold for the initial characterisation of preg-robbing potential for a variety of ores is proposed. The method is compared with the Barrick Gold Mines Incorporated (BGMI online) preg-robbing test currently used in industry and shows good correlation for carbonaceous ores. It is shown that for silicate and sulphide ores the residence time of the BGMI preg-robbing test is too short to allow equilibrium to be achieved and in all cases it was demonstrated that allowances in the BGMI preg-robbing test need to be made for gold leached from the ore. (c) 2005 Published by Elsevier Ltd.

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