Identifies Promise At Historic WA Gold And Copper Sites
Medallion Metals Limited (ASX:MM8) has reported that metallurgical testwork has confirmed high recoveries of gold and copper from conventional process routes at the company’s flagship Ravensthorpe Gold Project (RGP) in Western Australia.
To date, gold recovery has averaged 95.9% and 92.5% for all historical gravity-flotation-leach and gravity-leach tests respectively, while copper recovery averages 73.0% for all historical flotation tests.
Medallion has engaged GRES to undertake a comprehensive review of all historical metallurgical testwork undertaken on RGP ores. The cumulative results of all historical testwork conducted provides a substantial database upon which to conduct the GRES metallurgical review.
The review will be tasked to confirm that an industry standard gravity/flotation/leaching process route is the preferred option to maximise gold and copper recovery from RGP high copper ores, with estimates of reagent consumptions, recoveries and concentrate grades expected under normal operating conditions. The review will also investigate the ability to bypass the flotation step for low copper ore.
Additionally, a gap analysis will be undertaken to establish what additional metallurgical testwork is required to support a Definitive Feasibility Study (DFS) level of assessment of the technical and commercial viability of RGP in the future.
Managing Director, Paul Bennett, said GRES’ long involvement with the design, construction and recent enhancement of the Deflector gold-copper process plant ensures it is well placed to advise the company on process design and engineering given RGP is expected to share many of the same aspects of Deflector in terms of scale and configuration given the mineralogical similarities. The company expects to report the findings of the GRES metallurgical review in December 2021.
“The metallurgy review is an important step for Medallion to both consolidate the significant amount of historical work done and plan for the future,” Mr Bennett said.
“Our intention is that the next round of metallurgical testwork is definitive and final such that it supports a definitive level of assessment of RGP. The historical results suggest high gold and copper recoveries can be consistently achieved using industry standard processes.
“This work will increase certainty that those results are repeatable across the lithologies and deposits and can be scaled up to commercial rates. We’re pleased to have an industry leader in GR Engineering assist us in this regard.”
For further information please visit: https://medallionmetals.com.au/
