Brine leaching process for recovering valuable metals from oxide materials
US10400306B2 · kind B2 · utility
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83References
25Claims
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Key dates
| Filing date | May 4, 2015 |
| Grant date | Sep 3, 2019 |
| Priority date | — |
| Expiry date | Dec 21, 2036 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P10/20
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A process is provided in which a silver- and base metal-containing material is contacted with an aqueous solution comprising an alkali and/or alkaline earth metal halide and an oxidant at a solution pH of at least about pH 6 to dissolve the silver into a pregnant leach solution while maintaining at least most of the base metal in the silver- and base metal-containing material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.