Methods for enhancing efficiency of bitumen extraction from oilsands using activated carbon containing additives
US11060035B2 · kind B2 · utility
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Key dates
| Filing date | Jun 30, 2017 |
| Grant date | Jul 13, 2021 |
| Priority date | — |
| Expiry date | Jun 30, 2037 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10G2300/807
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Methods are provided for separation of bitumen from oil sands ore having a bitumen content higher than about 6%. Activated carbons, or combinations of activated carbons and caustic are used as process additives for ore-water slurry-based bitumen extraction processes or in situ bitumen recovery processes. These additives promote breakdown of adhesion between clay minerals and bitumen, resulting in the enhanced efficiency of extraction of bitumen from oil sands ore.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.