Process for beneficiating oil-shale
US4491513A · kind A · utility
9Cited by
11References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 16, 1984 |
| Grant date | Jan 1, 1985 |
| Priority date | — |
| Expiry date | Apr 16, 2004 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10G1/04
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Disclosed is a process for removing mineral matter from oil-shale by contacting the oil-shale with (a) an ammonium salt solution and (b) an organic solvent, at a temperature from about 0.degree. C. to about 300.degree. C. for a time which is sufficient to substantially separate at least about 80 wt. % of the carbonate mineral matter from the oil-shale.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.