AZURE Minerals announced that the initial metallurgical testwork program undertaken on representative mineralised samples from the high grade Promontorio copper-gold-silver deposit has returned promising results.
First stage flotation tests produced a “rougher” concentrate grade of 23.1% copper, with a recovery of 99.4% of the total copper into a mass recovery of 48%. Further flotation testing upgraded the rougher concentrate to produce a “cleaner” concentrate grade of 33.9% copper with a recovery of 98.2% of the total copper, and reduced the mass recovery to 34%.
Azure’s Executive Chairman Tony Rovira said these results display that high metal recoveries will be achievable during commercial scale production.
He said positive crushing and grinding characteristics and excellent flotation recoveries of all valuable metals were achieved, indicating conventional processing technologies likely to be suitable for the mineralised material.
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