Randol Gold & Silver Forum 2000, Vancouver B.C. Canada
September 6th, 2000
The concept of Extreme Gravity is the latest in a series of innovations that has seen a re-introduction of gravity recovery systems into the milling operations of most gold mines. Traditionally, most gold milling circuits are designed around flotation and cyanidation requirements, with the gravity circuit being fit in where possible. Extreme Gravity takes the novel approach of optimizing the circuit, in order to maximize recovery by gravity. In some cases gravity systems can achieve high enough recoveries to eliminate the need for chemical systems such as cyanidation or flotation.
There are many advantages of such a system including low capital cost, reduced permitting, improved cash flows and much reduced environmental issues.
There are a number of plants currently in operation which utilize this new methodology. The Muzhievo project has been an example of a recent turn key success achieving recoveries from 85-90%. The details of this project are examined as a case study.
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"We look forward to having the economic benefits of improving gold recovery with our 12-Knelson installation."
- John Mosher, Superintendent, Production - PT Freeport Indonesia
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