CLIENT: Banks Island Gold
PROJECT: Yellow Giant Mine Dense Media Separation (DMS) & Flotation Plant
PROJECT TYPE: Greenfield
LOCATION: British Columbia, Canada
SERVICE SCOPE: EPCM
The project involved building a 600 tpd mining and processing operation on Banks Island which is located off the west coast of British Columbia near the Queen Charlotte Islands. The fact that the site is located on an island made building the project more difficult because the only way to access the site was by barge or float plane.
The process plant was serviced by three producing underground mines on the island. Ore from the mines was pre-concentrated using dense media separation (DMS) to separate the light gangue from the heavy mineralized ore.
Banks Island Gold used a DMS process to upgrade the run of mine material from the underground operations. The DMS plant has an upgraded capacity of 600 tpd which rejected about 40% of the feed material allowing high grade sulphides to report to a conventional milling, flotation and dewatering circuit. Products exported were gravity recoverable gold and flotation concentrate.
The DMS plant mitigated the effects of dilution in the mine and enabled a cheaper underground bulk mining method to be used for first narrow vein operation.