eXtreme Processing - Maximum Benefit for Minimum Effort
Kevin Peacocke, BSc (Eng), MIMM, C. Eng
March 25th, 2004
The advent of continuous gravity technology affords the opportunity to capture not only the free liberated gold, but also the gold carrying species into a small, high-grade concentrate. This concentrate can then be treated under more intensive conditions in a small, dedicated plant for maximum recovery.
The benefits are obviously lower capital plant installation costs and lower operating costs since only a fraction of the ore is treated.
Knelson Gravity Solutions has coined the term "eXtreme Processing" to describe a processing system comprising of continuous gravity concentration via the Knelson Continuous Variable Discharge (CVD) concentrator followed by a regrind upon the concentrates and intensive cyanidation upon the resulting slurry. A further refinement, under investigation at this time, is the direct electrowinning of gold as solid cathode from the pregnant liquor.
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The advent of continuous gravity technology affords the opportunity to capture not only the free liberated gold, but also the gold carrying species into a small, high-grade concentrate. This concentrate can then be treated under more intensive conditions in a small, dedicated plant for maximum recovery. 
