Bacterial leaching as a pre-treatment step for gold recovery from refractory ores
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Cumhuriyet University
Publication date: 1998-01-01
Physicochem. Probl. Miner. Process. 1998;32(1):173–181
In this article, pre-treatment such as bio-leaching before cyanidation is discussed as an alternative technique to treat refractory gold ores containing pyrite and arsenopyrite. There are two methods of bacterial leaching, namely stirred reactor bio-leaching and bio-heap leach processes. The examples of industrial applications and economics of bacterial leaching are given in detail.