Recycle of secondary froth in the hot water process for extracting bitumen from tar sand
US4776949A · kind A · utility
11Cited by
5References
2Claims
0Family size
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Key dates
| Filing date | Dec 5, 1985 |
| Grant date | Oct 11, 1988 |
| Priority date | — |
| Expiry date | Dec 5, 2005 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10G1/047
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Froth, produced by induced air flotation in the hot water process circuit for extracting bitumen from tar sand, is recycled and added to the fresh slurry being introduced to the primary separation vessel. An increase in bitumen recovered as primary froth from the circuit is produced.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.