Coal recovery process
US5123931A · kind A · utility
8Cited by
6References
38Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 6, 1990 |
| Grant date | Jun 23, 1992 |
| Priority date | — |
| Expiry date | Dec 6, 2010 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10L5/06
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A method for the beneficiation of coal by selective agglomeration and the beneficiated coal product thereof is disclosed wherein coal, comprising impurities, is comminuted to a particle size sufficient to allow impurities contained therein to disperse in water, an aqueous slurry is formed with the comminuted coal particles, treated with a compound, such as a polysaccharide and/or disaccharide, to increase the relative hydrophilicity of hydrophilic components, and thereafter the slurry is treated with sufficient liquid agglomerant to form a coagulum comprising reduced impurity coal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.