Method for solvent treating of tar sands with water displacement
US4722782A · kind A · utility
36Cited by
5References
5Claims
0Family size
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Key dates
| Filing date | Oct 31, 1983 |
| Grant date | Feb 2, 1988 |
| Priority date | — |
| Expiry date | Oct 31, 2003 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10G1/04
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A method for the recovery of bitumen from tar sand comprises slurrying tar sand with about 0.5 to about 4.0 pound of a organic solvent per pound of tar sand, then adding greater than about 0.50 pound water per pound of tar sand, and separating a bitumen rich solvent phase. The method has the advantage of permitting separation of sand from the bitumen rich solvent extract without formation of a stable emulsion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.