Process for the beneficiation of coal by selective caking
US4881946A · kind A · utility
1Cited by
3References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 28, 1988 |
| Grant date | Nov 21, 1989 |
| Priority date | — |
| Expiry date | Nov 28, 2008 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB03B1/04
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A process is disclosed for the beneficiation of coal by selective caking, in which process a caking mixture is employed consisting of: PA0 one or more solvents selected from among light hydrocarbons having boiling points not higher than 70.degree. C.; PA0 a non-ionic, oil-soluble additive obtained from controlled propoxylation of the phenolic fractions derived from cake-oven tars; PA0 and possibly one or more heavy co-caking agents selected from among coal-derived oils having boiling points between 200.degree. and 400.degree. C., or the residual products of petroleum refining or mixtures of the same.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.