RE: Expanded Roan Concentrator - Copper Sulphate Concentrate18 Oct 2023 14:34
Sadly sulphide, not sulphate! The latter is easily converted to pure copper by electrwinning. LC has always spoken about producing three products which can either be processed 'in house' or sold onto the market as concentrates. We know about the oxides and Roan is all about the economic extraction of these from weathered reefs. The sulphides are traditionally proocessed by smelting which is costly, though we have an ongoing leaching method under evaluation and I had assumed that the Northern strategy pilot plant was taking that forward. I stand to be corrected, but had assumed the third product was cobalt concentrate.
There is a truly vast amount of copper tied up as sulphide in tailings, so the answer to your question, Butter, is 'a lot'!
cut and paste from RNS: ""As a result, and to better capture this opportunity, Jubilee has taken the decision to significantly upgrade its Roan concentrator facility to offer a unique capability to target a broader range of materials and produce three concentrate products for both refining at Sable and direct on-sale to the market."