Use of anionic copolymers for enhanced recovery of useful coal and potassium chloride from screen bowl centrifuge
US7189327B2 · kind B2 · utility
0Cited by
14References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 26, 2004 |
| Grant date | Mar 13, 2007 |
| Priority date | — |
| Expiry date | Jul 3, 2024 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L23/0876
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A method of enhancing the recovery of useful coal or potassium chloride from screenbowl centrifuge separation operations comprising adding to the screenbowl centrifuge, from about 0.005 lbs active polymer/ton dry solids in centrifuge to about 0.70 lbs active polymer/ton dry solids in centrifuge, of an anionic copolymer, wherein said anionic copolymer is selected from the group comprising copolymers of acrylamide and acrylic acid and the known salts thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.