Processes for recovering organic solvent extractant from solid-stabilized emulsions formed in hydrometallurgical solvent extraction circuits
US9474990B2 · kind B2 · utility
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24Claims
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Key dates
| Filing date | Aug 31, 2012 |
| Grant date | Oct 25, 2016 |
| Priority date | — |
| Expiry date | Aug 31, 2032 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P10/20
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Processes for recovering an organic solvent extractant phase from a solid-stabilized emulsion formed in a hydrometallurgical solvent extraction circuit are disclosed. One such process includes mixing a de-emulsifier comprising an effective amount of a polymeric aggregating agent with the solid-stabilized emulsion, thereby separating the emulsion into its aqueous, organic, and solid phase components; and removing the organic solvent extractant phase from the other components, thereby recovering the organic solvent extractant phase from the solid-stabilized emulsion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.