Process using carbonate reagent for recovering vanadium from cokes and ashes derived from heavy oils
US4472360A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 25, 1983 |
| Grant date | Sep 18, 1984 |
| Priority date | — |
| Expiry date | Jul 25, 2003 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P10/20
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Vanadium values are recovered from sulphur-containing cokes and ashes derived from heavy oils by a novel process comprising heating in the presence of alkali metal carbonate, contacting the resulting solid residue with water to form a leach and recovering the vanadium values dissolved therein. The amount of alkali metal carbonate used is at least sufficient to convert the vanadium values present in the raw material into alkali metal vanadate, but insufficient to react in addition with all of the sulphur values therein. The heating step solubilizes only alkali metal vanadate and thus the leach solution is substantially free of contaminating substances.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.