Modification of copper/iron selectivity in copper solvent extraction systems
US8282857B2 · kind B2 · utility
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Key dates
| Filing date | Mar 29, 2006 |
| Grant date | Oct 9, 2012 |
| Priority date | — |
| Expiry date | Jan 9, 2028 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P10/20
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A solvent extraction composition comprising one or more orthohydroxyarylaldoximes and/or one or more orthohydroxyarylketoximes, and one or more selectivity modifiers consisting of phosphinic and/or phosphonic acids, and salts and esters therefore and optionally one or more equilibrium modifiers is provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.