Extraction process
US4533459A · kind A · utility
50Cited by
4References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 20, 1984 |
| Grant date | Aug 6, 1985 |
| Priority date | — |
| Expiry date | Aug 20, 2004 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10G1/047
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
In the extraction of bitumen oils from oil sands, the raw material is first slurried with a stream of hot water under conditions promoting the release of the bitumen oils without disintegration of clay in the raw material; the water to raw material is at least 1:1 by weight. The slurry is separated into an oil-rich component, a solids component, and a middlings component containing essentially water and fines with only minor proportions of oil and solids. The middlings component, after removal of the contained fines and the solids is recycled as a part of the slurrying water.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.