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US 2026/0218331 A1Published application
Process for leaching copper produced from secondary sources
AssigneeGlencore Technology Pty Limited
InventorsStuart Nicol, Sarah Dowling
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Abstract
The present invention relates to a leaching process. In particular, the present invention relates to a leaching process for copper-containing material from the smelting of one or more secondary copper materials, or “black copper”. More particularly, the present invention relates to a black copper leaching process under acidic and oxidising conditions.
Claims29
A method of copper leaching, comprising the steps of:
- a. obtaining a copper-containing material from the smelting of one or more secondary copper materials;
- b. subjecting the copper-containing material to an acidic and oxidising leaching medium over a predetermined period, at a predetermined temperature and a predetermined pressure;
- c. obtaining a leach residue comprising un-leached metals and/or metal-containing compounds and a copper-containing leachate solution;
- and
- d. recovering copper from the leachate solution.
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Dependencies are inferred from the claim text.