THE DRILL SERGEANT: Rox Resources (ASX: RXL) with Joint Venture partner Venus Metals Corporation (ASX: VMC) reported on recent metallurgical testwork conducted on the Youanmi Deeps Resource, located within the OYG JV area (Rox 70% and Manager, VMC 30%) in Western Australia.
The JV is undertaking development studies into potential future production at the Youanmi gold project.
The recent work is a preliminary part of the study to establish processing pathways to optimise gold recovery prior to progressing to more extensive and detailed ‘feasibility study level’ metallurgical testwork.
Rox reported that the testwork demonstrated a well understood pathway to very high gold recoveries, something which was not achieved in the 1990s.
Historical production at the mine averaged 86.8 per cent gold recovery, with new testwork improving extraction to 95.6 per cent.
Further testwork in combination with the costing studies is expected to determine the optimal and most economical feasible process solution, exploring various other suitable processes.
“In June 2021 we reported a 30 per cent increase in the Youanmi Deeps Resource, and now we are pleased to report that advances in gold extraction technology over the last 30 years (since GMA built its processing plant) have made a significant difference in gold recovery,” Rox Resources managing director Alex Passmore said in the company’s ASX announcement.
“Preliminary metallurgical testwork indicates a 10 per cent increase on historical gold recoveries by utilising a pressure oxidation leach process (i.e. POX).
“Furthermore, we look forward to results of (scoping level) process plant design and costing later this year being undertaken by Como Engineers who have a long track record of success for both design and development of similar sized gold processing facilities in WA with a variety of flowsheet designs.”
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