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Conference Proceedings

World Gold 2007

Conference Proceedings

World Gold 2007

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Online Cyanide Analysers Optimise Cyanidation and Ensure Cyanide Code Compliance for Plant Tailings

Online cyanide analysers have been successfully used to control free cyanide in the gold/silver leach process for over 15 years. Use of such analysers leads to cyanide savings and improvement in recoveries. Plants with leach cyanide analysers show both lower and more consistent cyanide levels in tailings._x000D_
Cyanide code compliance requires meeting residual cyanide targets in tailings. Monitoring and logging of the residual cyanide in plant tailings and effluent is required._x000D_
Meeting targets may require cyanide recovery/destruction processes to be implemented. The operating cost of destroying cyanide is often the same order of magnitude as the cyanidation cost. Various cyanide destruction and/or recovery processes are reviewed. Choice of a process consistent with the environmental and operational requirements is illustrated._x000D_
Online weak acid dissociable cyanide (CNWAD) analysers have recently been developed and introduced on gold plants. The application of a WAD 1000 online CNWAD analyser at a large gold plant is presented. The analyser ensures code compliance, reduces cyanide destruction process operating costs and forms a historical record of CNWAD values in tailings.
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  • Online Cyanide Analysers Optimise Cyanidation and Ensure Cyanide Code Compliance for Plant Tailings
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  • Published: 2007
  • PDF Size: 0.244 Mb.
  • Unique ID: P200709017

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