Method for improving overflow clarity in production of coal
US11155478B2 · kind B2 · utility
8Cited by
24References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 13, 2017 |
| Grant date | Oct 26, 2021 |
| Priority date | — |
| Expiry date | Aug 25, 2037 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10G1/04
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
A transitional treatment composition and methods of treating coal refuse are provided. The transitional treatment composition comprises an anionic acrylate-acrylamide copolymer having from about 30 mole percent to about 50 mole percent (meth)acrylate, from about 50 mole percent to about 70 mole percent (meth)acrylamide, and a reduced specific viscosity of from about 18 dL/g to about 30 dL/g. The transitional treatment composition can be made down in an aqueous liquid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.