Process for extracting and recovering copper
US6177055A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 2, 1999 |
| Grant date | Jan 23, 2001 |
| Priority date | — |
| Expiry date | Sep 2, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P10/20
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A process for extracting and recovering copper from an aqueous solution containing copper values comprising: PA1 (a) contacting the aqueous copper bearing solution with an organic phase comprising a water insoluble and water immiscible solvent solution of an extraction reagent formulation to extract at least a portion of the copper values into the organic phase; PA1 (b) separating the resultant copper pregnant organic phase from the copper baren aqueous phase; and PA1 (c) recovering the copper values from the copper pregnant organic phase; wherein the extraction reagent formulation comprise an (i) oxime extractant and (ii) an equilibrium modifier in which the modifier is a linear diester or polyester of an unbranched dicarboxylic acid and an unbranched alcohol.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.