Process for flocculation of a tailings stream
US8388832B2 · kind B2 · utility
20Cited by
3References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 29, 2009 |
| Grant date | Mar 5, 2013 |
| Priority date | — |
| Expiry date | Aug 12, 2031 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02W30/91
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A process for the treatment of a tailings stream is provided. The tailings stream comprises water, sand and clay fines and is produced from bitumen extraction process of an oil sands ore. The process for treating the tailings stream comprises contacting a polysilicate microgel, a polyacrylamide and one or both of a multivalent metal compound and a low molecular weight cationic organic polymer with a tailings stream to flocculate sand and clay fines.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.