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Conference Proceedings

World Gold '91, Cairns Qld, April 1991

Conference Proceedings

World Gold '91, Cairns Qld, April 1991

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Oxygen Requirements and Monitoring for Gold Ore Processing

Adequate levels of dissolved oxygen are essential for efficient gold dissolu- tion. The actual levels in plantpuips can be seriously reduced by the presence of oxygen consuming reactive minerals, and reduced oxygen solubility in saline water. The rate of gold dissolution is then limited by oxygen availability rather than cyanide. Ion selective electrode dissolved oxygen meters can give an effective indication of the relative oxygen saturation, but they are not able to give meaningful values of dissolved oxygen in saline water, without custom calibration curves. When the dissolved oxygen concentration is rate limiting, the addition of oxygen or peroxide can improve gold leaching kinetics as well as reduce cyanide consumption.
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  • Published: 1990
  • PDF Size: 0.5 Mb.
  • Unique ID: P199102041

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