Home |  News |  Conferences |  Commodities |  Publications |  Business Directory |  Resources |  Help
Go to the MEI Online homepage

Search Site:

MEI Online: Plant Operation News: Africa: July 2nd 2007


Click for more info on Process Mineralogy '20


:: Bogoso BIOX® Incorporates Knelson Concentrator

The Bogoso/Prestea Gold Mine (90% owned by Golden Star Resources ltd.) in Ghana is the latest bio-oxidation plant to incorporate a gravity circuit as an integral part of their process flowsheet.

Biomin, a subsidiary of Goldfields Ltd., has been selected to supply their proprietary BIOX® process for the project. The gravity concentrator is a custom made 100% stainless steel model KC-XD30 that will treat the washed BIOX® residues after a 3 stage counter current decantation circuit. The KC-XD30 concentrator will recover a high proportion of the liberated gold prior to discharging to a conventional CIL circuit.

At full production, expected in late 2007, Bogoso/Prestea’s sulfide circuit will operate at a design capacity of 3.5 million tonnes per year of refractory sulfide ore into the crusher, equivalent to 34 tonnes per hour of concentrate through the BIOX® circuit. Design recovery is estimated at 85% overall, resulting in annual gold production from the sulfide plant of between 230,000 and 260,000 ounces.

Once operational the Bogoso/Prestea bio-oxidation plant will be the tenth BIOX® installation in the world and the fifth to include Knelson technology. The others include Fairview in S. Africa, Sao Bento in Brazil, Anglogold Ashanti in Ghana and Beaconsfield in Australia.




Select the list(s) you'd like to join below, enter your email address, choose a content format and click "Join."
[more info]

MEI Online Update
MEI Online Job Vacancies


© 1998-2017, Minerals Engineering International

Email: amanda@min-eng.com