Composition for extracting gold and silver anions from alkaline solutions and processes for making same
US4894407A · kind A · utility
2Cited by
2References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 15, 1988 |
| Grant date | Jan 16, 1990 |
| Priority date | — |
| Expiry date | Aug 15, 2008 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P10/20
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
An extraction composition useful for extracting gold or silver values from aqueous systems containing gold or silver cyanide anions. Useful extractions include organic oxides of phosphrous and sulfur attached to an inert resinous substrate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.