Method for the recovery of a tungsten-containing catalyst from coke containing nickel and vanadium
US4501820A · kind A · utility
3Cited by
8References
8Claims
0Family size
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Inventors
Key dates
| Filing date | Jul 28, 1983 |
| Grant date | Feb 26, 1985 |
| Priority date | — |
| Expiry date | Jul 28, 2003 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S502/516
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A tungsten-containing catalyst associated with coke containing vanadium and nickel is recovered by a method which includes steam gasification, low temperature burning to remove at least a portion of the coke and selective extraction of the nickel and vanadium.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.