Nice post. I didn't see where other people addressed FreeflyerNZ
questions so here is a link to a generalised outlook on heap leach of copper sulphides. Perhaps this will assist your queries?
https://www.911metallurgist.com/heap-leaching-oxide-sulfide-copper-ores/
Barry and the team are experts at heap leaching.
While at Finders Barry's team reported this.
Copper mineral species at Kali Kuning and Lerokis are dominated by chalcocite and covellite, which are readily amenable to bacterial assisted leaching, and chalcopyrite which leaches faster at higher temperatures. A two year laboratory test program indicated copper recoveries of up to 80%.
Copper Mineralisation
• Copper mineralisation at both Kali Kuning and Lerokis occurs predominantly within coherent massive sulphide units with a lesser amount of generally lower grade material occurring within intensely clay-sericite pyrite altered andesitic tuffs in the footwall and lateral extent of the massive sulphide units.
• Based on Finder’s drilling, the Kali Kuning massive sulphide resource has been re-classified into three metallurgical sub-types - Leached, Transition zone and Primary massive sulphide. The Leached and Transition types reflect incipient in-situ leaching of the massive sulphide unit by natural groundwater. The Transition zone material although of lower copper grade than the main Primary massive sulphide (1.5% vs 2.9%) contains a higher proportion of readily leachable copper minerals.
Copper plate(99.99% purity) production is planned which was covered in
Post #:51989239
And this link to copper cathode production https://www.cargohandbook.com/Copper_Cathodes
Metal X plant obtained in Post #:52157837
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