Bitumen extraction process
US8343337B2 · kind B2 · utility
13Cited by
17References
23Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 29, 2009 |
| Grant date | Jan 1, 2013 |
| Priority date | — |
| Expiry date | Nov 11, 2030 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02W30/91
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A process for the extraction and recovery of bitumen from oil sands and a process for the treatment of tailings are disclosed. Bitumen is recovered in a process comprising contacting a polysilicate microgel with an ore sand oil to produce a froth comprising bitumen and a tailings stream comprising water, sand and clay fines. Preferably the tailings stream is dewatered and recovered water may be recycled to the extraction process. Polysilicate microgel may be carried through to a dewatering step and enhances flocculation in dewatering said tailings.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.