Process for the removal of vanadium from wet process phosphoric acid
US5171548A · kind A · utility
6Cited by
15References
27Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 6, 1990 |
| Grant date | Dec 15, 1992 |
| Priority date | — |
| Expiry date | Jun 6, 2010 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P10/20
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A process for removal of vanadium from wet process phosphoric acid comprising the steps of; PA0 (i) adsorbing an anionic pentavalent complex of vanadium, derived from the wet process phosphoric acid, onto an anion exchange resin or into an organic layer; and PA0 (ii) reducing the vanadium complex to trivalent and/or tetravalent vanadium so as to selectively strip vanadium from the anion exchange resin or from the organic layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.