Process for selectively removing molybdenum from liquid mixtures containing it together with vanadium
US7255795B2 · kind B2 · utility
12Cited by
8References
10Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | May 14, 2002 |
| Grant date | Aug 14, 2007 |
| Priority date | — |
| Expiry date | Dec 20, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S210/912
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Process for selectively removing molybdenum from liquid mixtures containing it, in a quantity greater than (200) mg/l, together with vanadium characterized in that it comprises the following steps: bringing the liquid mixture to a pH of less than (3); adding a solution of an alkaline xanthate to the solution so that the molar ratio molybdenum/alkaline xanthate ranges from (¼) to (⅛), maintaining the pH constant by means of the addition of an inorganic acid; stirring the mixture causing the precipitation of the molybdenum present in the mixture.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.