Equipment
Home
What's New
Sample Testing
Parts & Service
Technical Resources
Papers & Reports
Contact Us




Knelson
E-Newsletter

Avgold - Target Division - Post Audit on the Knelson Concentrator

Gerald E Olivier, Plant Manager - Avgold, Target Division

November 2nd, 2001

During August 1999, the decision was taken to discontinue the operation of the Flotation Plant at the Loraine Metallurgical Plant. The decision was based purely on economics and the fact that the Flotation Section presented a source of lock-up gold.

This resulted in a decrease in overall plant recovery of 6%, from 95% to 89%.

In view of the new Target Metallurgical Processing Plant and the decrease in recovery on the old Loraine Plant, the option to install a Knelson Concentrator was investigated.

Experimental work conducted during the feasibility study of the new Metallurgical Plant indicated that the Target ore contains approximately 40% liberated, free gold.

The possible savings on cyanide and lime formed part of the project.

A capital Vote 0176 was prepared submitted and approved. Construction started during July 2000, which was completed during September 2000. The Knelson Concentrator was commissioned on the 12 September 2000.

The following parameters were set for the Knelson Concentrator Project:

  Planned Actual
Total Capital Cost R 742 073 R 702 113
Increase in Gold
Recovery %
1.50% 3.0%
Commissioning August 2000 September 2000
Pay Back Period 4 months 1 month

Final commissioning date was the 12 September 2000.

Download the full report here.

  Avgold - Target Division - Post Audit on the Knelson Concentrator.
44kb| 6 page Acrobat Info Sheet

 

The above is an Adobe Acrobat file. If you require more information or need to download the free plug-in, click here for more details.

 

Want more technical papers/presentations and emailed directly to your inbox? As well as an open discussion forum to post a comment, ask a technical question, solicit and idea or gain industry feedback on the issues presented in the technical paper/presentation? Subscribe to the special 25th anniversary monthly "e-Workshop" today.  

Share Your Knelson Experience
"Knelson concentrators have, in a short space of time, changed the way that geologists and metallurgists think about gold. Gravity recoveries of over 30% used to be regarded as remarkable. Now, gravity recoveries up to 90% using Knelsons are not considered to be unusual except by those considerably out of touch with the industry. The challenge for innovators like Knelson is to reach those who have become stuck in their ways to the detriment of the profitability of their operations." - Phillip Hellman, Director - Hellman & Schofield Pty Ltd., Australia ...more > >
Australasia | Africa | Canada | C.I.S. | Europe | Latin America | Middle East | USA
 
Back to top Copyright 1997-2005 Knelson, a corporate partnership | Privacy Policy | Terms & Conditions