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

Search Site:

MEI Online: Plant Operation News: Africa: May 27th 2016


Click for more info on Comminution '21


:: GCA Commissions Two KC-QS48/ICS Knelson Concentrators


GCA has successfully commissioned two KC-QS48/ICS FLSmidth Knelson Concentrators at Asanko Gold’s project in Ghana.

The KC-QS48s at Asanko are each rated at 400 tph solids (40-70% solids in feed pulp). The plant design was a fairly ‘standard’ and well-proven design, which incorporated a coarse crusher, SAG mill, and a Knelson concentrator. As expected, the throughput of oxide ores exceeded 2 Mtpa. A later design modification incorporated an additional crushing stage so that a finer and more homogenous feed would be supplied to the SAG mill, thereby increasing the treatment of the harder sulphide ores to at least 2 Mtpa.

The feed material will be pre-screened on vibrating screens to remove unsuitable, oversize material, and screen spray bars will achieve feed dilution whilst also increasing screening efficiency. Further dilution will be achieved with the addition of process water in the screen underpan. Screen oversize will be incorporated with the mill feed on the mill feed conveyor, while screen underflow will run to the gravity concentrators. The gravity concentrators are expected to produce around 3 t/d of high grade concentrate. Concentrator tailings will gravitate to the ball mill feed while the concentrate will report to an Intensive cyanidation reactor for further processing.

The plant design originally had only one FLSmidth Knelson concentrator, however with the increased throughput and relative abundance of easily liberated free gold, a second Knelson bowl was added.

The gold from the first two smelts at Asanko came from this gravity circuit.

GCA wishes every success to the Asanko Gold team and looks forward to a very successful project and partnership.




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