Methods for recovering copper, cobalt, indium and nickel with amine containing lixiviant
US11566304B2 · kind B2 · utility
1Cited by
4References
19Claims
0Family size
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Key dates
| Filing date | Sep 14, 2018 |
| Grant date | Jan 31, 2023 |
| Priority date | — |
| Expiry date | Mar 6, 2039 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P10/20
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Compositions and methods are provided that provide recovery of metals such as copper, nickel, cobalt, indium, and other metals are recovered from mine tailings, in situ ore bodies, or postconsumer waste. An amine-containing lixiviant is utilized to generate an aqueous solution of the desired metal from insoluble salts present in the source material. Metals can be recovered and further purified by various processes, including extraction into an immiscible organic solvent, electrowinning, crystallization, and chemical reduction. Spent lixiviant can be regenerated and recycled back into the metal recovery process.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.