Method of separately recovering metal values of petroleum refining catalyst
US4861565A · kind A · utility
26Cited by
11References
12Claims
0Family size
Assignee
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Key dates
| Filing date | Jan 27, 1987 |
| Grant date | Aug 29, 1989 |
| Priority date | — |
| Expiry date | Jan 27, 2007 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P10/20
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Metal values including those of cobalt, vanadium, aluminum, molybdenum and tungsten are recovered from spent petroleum refining catalyst by acid leaching the metal values except those of molybdenum or tungsten, separating the resulting solution from the leach residue and selectively recovering the cobalt, vanadium and aluminum values from the solution and recovering the molybdenum and tungsten values from the leach residue.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.