Process for recovering cesium from cesium alum
US4469670A · kind A · utility
4Cited by
9References
13Claims
0Family size
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Key dates
| Filing date | Jul 12, 1983 |
| Grant date | Sep 4, 1984 |
| Priority date | — |
| Expiry date | Jul 12, 2003 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01P2006/80
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Cesium is recovered from cesium alum, CsAl(SO.sub.4).sub.2, by an aqueous conversion and precipitation reaction using a critical stoichiometric excess of a water-soluble permanganate to form solid cesium permanganate (CsMnO.sub.4) free from cesium alum. The other metal salts remain in solution, providing the final pH does not cause hydroxides of aluminum or iron to form. The precipitate is separated from the residual solution to obtain CsMnO.sub.4 of high purity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.