Process for beneficiating oil-shale
US4491514A · kind A · utility
14Cited by
11References
7Claims
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 primaryC10L9/02
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Disclosed is a process for removing mineral matter from oil-shale which method comprises contacting the oil-shale with (a) an ammonium salt solution, and (b) a nonionic surfactant 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 of the oil-shale.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.