Further Positive Metallurgical Testwork Results
Cora Gold Limited, the West African focused gold company, is pleased to announce the metallurgical testwork results from oxide samples taken from its Sanankoro Gold Project in Southern Mali (‘Sanankoro’ or ‘the Project’).
These results follow on from previous work reported on 21 October 2019. The purpose of this testwork was to advance the previous testwork and assess the impact of reagent consumption, residence time, gravity recovery and grind size.
94.1% average overall recovery was achieved
44% average recovery from gravity
Over 90% leach recoveries within 4 hours leach time
demonstrating very quick kinetics and significantly shorter than previous testwork programmes
Cyanide consumption was varied with an average consumption of 0.17kg/t
significantly less than previous testwork programmes
Samples were selected to represent different depth profiles across the oxide deposits of Selin, Zone A and B at Sanankoro
279kg of oxide material was tested across the three deposits
A gravity and Carbon in Leach (‘CIL’) flowsheet was used to determine the recovery of gold
Bert Monro, CEO, comments “The results from this metallurgical test programme are excellent. A significant proportion of the gold in the Sanankoro ore can be recovered with gravity with over 90% of the remaining gold leaching from the gravity tails within 4 hours. The quick kinetics should reduce the size of the required leach circuit considerably resulting in a capital saving. Further, a significantly reduced cyanide consumption should also have a favourable impact on operating costs. These results will be used in a trade-off between a conventional gravity & CIL flowsheet and heap leach once ongoing column leach testwork is completed. The outcome from the trade-off will be used as the basis of a definitive feasibility study (‘DFS’) to commence next year.”
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