Process for recovering gallium
US4193968A · kind A · utility
25Cited by
4References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 3, 1978 |
| Grant date | Mar 18, 1980 |
| Priority date | — |
| Expiry date | Oct 3, 1998 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S423/14
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
The invention provides a process for recovering gallium from calcined clay leached with hydrochloric acid. The leach solution containing aluminum, ferric and gallium chlorides is treated by ion exchange to first remove aluminum ions, following which the solution containing ferric and gallium chlorides is treated to reduce the ferric ions to ferrous ions. The reduced solution is acidified with hydrochloric acid sufficiently to insure that the gallium is present in the form GaCl.sub.4 - ions, and is then again treated by ion exchange to separate the ferrous ions from the gallium for ultimate recovery of the latter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.