Process for the recovery of molybdenum from mixtures of molybdenum compounds with other metallic compounds
US4401631A · kind A · utility
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5References
5Claims
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Key dates
| Filing date | Dec 19, 1980 |
| Grant date | Aug 30, 1983 |
| Priority date | — |
| Expiry date | Dec 19, 2000 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P10/20
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Recovery of molybdenum from a solid mixture, such as an exhausted catalyst, containing molybdenum in the oxide form or in the form of molybdic ions and other metallic compounds. The mixture is contacted with an aqueous alkali metal hydroxide to solubilize molybdenum in the form of an alkali metal molybdate, and after filtration the aqueous solution of alkali metal molybdate thus obtained is contacted with a strong cationic exchange resin to convert said molybdate into molybdic acid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.