Process for recovering molybdenum from solution in a form that is substantially free from vanadium
US4814149A · kind A · utility
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1References
9Claims
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Inventor
Key dates
| Filing date | Oct 3, 1986 |
| Grant date | Mar 21, 1989 |
| Priority date | — |
| Expiry date | Oct 3, 2006 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01G39/003
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
The present invention is a process for selectively precipitating molybdenum in a form that is substantially free from vanadium impurities. The molybdenum is precipitated in the form of ammonium octamolybdate which has a molybdenum to vanadium ratio of about 400:1 in an initial crystallization and a ratio of about 1300:1 in a subsequent recrystallization.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.