Method of treating high-solids mineral slurries with polymeric flocculants
US11001514B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 22, 2017 |
| Grant date | May 11, 2021 |
| Priority date | — |
| Expiry date | May 22, 2037 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B43/34
- WIPO fieldChemical engineering
- 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 mixture of polyethylene oxide polymers, in particular a mixture of one or more high molecular weight polyethylene oxide polymer and one or more ultra high molecular weight polyethylene oxide polymer. Said mixture of polyethylene oxide polymers is 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.