RE: More copper questions for the knowledgeable31 Jan 2024 11:19
Everopeful, my understanding is that the direct leaching process would result in more copper cathode. This from the RNS 22/11/2022:
"This process by-passes the need for traditional power intensive smelting of copper sulphide concentrates, offering additional growth opportunities from Sable's operational capability from the processing of mixed copper oxide and copper sulphide concentrates"
So it's bypassing the smelter process, logically that implies it ends up as copper cathode rather than being sold to a smelter for processing. I think this is purely for the more complex mixed sulphide / oxide ores mentioned above, which cannot be easily concentrated by froth floatation, as is done at Roan.
According to the research note and other sources I've read, sulphide concentrates are typically 27-30% copper. Prices I've seen are typically 20-25% of the LME price / tonne.