Treatment of aqueous mineral suspensions with polymeric flocculants
US11001512B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 30, 2015 |
| Grant date | May 11, 2021 |
| Priority date | — |
| Expiry date | Mar 29, 2036 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G65/266
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present invention relates to a method of dewatering an aqueous mineral suspension comprising introducing into the suspension a flocculating system comprising a poly(ethylene oxide) copolymer, in particular a copolymer of ethylene oxide and one or more epoxy or glycidyl ether functionalized hydrophobic monomer. Said poly(ethylene oxide) copolymers are useful for the treatment of suspensions of particulate material, especially waste mineral slurries. The invention is particularly suitable for the treatment of tailings and other waste material resulting from mineral processing, in particular, the processing of oil sands tailings.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.