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MEI Online: Plant Operation News: Africa: April 22nd 2002

 
 

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:: ConSep ACACIA Reactor Installed in Zimbabwe

The first African ConSep ACACIA Reactor has successfully been installed and commissioned at Independence Mining's How Mine operation, achieving an average of 99.5% recovery within one week of its arrival on site. Peacocke, Simpson & Associates (PS&A) of Africa and ConSep Pty of Australia jointly carried out commissioning of the ConSep ACACIA Reactor for the treatment of the high- grade concentrates produced by the Knelson concentrators on site.

The first use of the ConSep ACACIA Reactor after installation and connection achieved recovery of 98.5%, followed by 99.3% recovery on the second run. Recoveries since then were consistently in excess of 99%, giving an average recovery of 99.5%. The How Mine unit joins six other ConSep ACACIA Reactors worldwide, all of which consistently achieve recoveries over 98% and faultlessly commissioned within days of installation.

The ConSep ACACIA Reactor was designed as a skid-mounted modular system for ease of installation and operation and uses an upward- flow fluidized bed technology to process the concentrates. With two standard centrifugal pumps as its only moving parts, the ConSep ACACIA Reactor avoids the frequent and costly maintenance problems suffered by complex rolled-drum intense cyanide systems. In addition, the production of clarified liquor overflow eliminates the thickening and clarifying systems necessary with rolled drums, and successfully removes all tramp iron during flushing out of concentrate batches.

The ConSep ACACIA Reactor was jointly developed over a five-year period by Anglogold Australia and ConSep Pty. Ltd, Knelson Concentrator's Australian licensees, for intense cyanidation treatment of high grade gravity concentrates arising from Knelson Concentrators or other devices. The ACACIA is marketed and supported in Zimbabwe by Peacocke, Simpson & Associates of Harare and throughout most parts of Africa by Johannesburg-based Knelson Concentrators Africa.

 

 

   

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