Process for beneficiation of coal by selective caking
US4946474A · kind A · utility
0Cited by
5References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 28, 1988 |
| Grant date | Aug 7, 1990 |
| 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 beneficiation of coal by selective caking, in which process a caking mixture is employed consisting of: PA0 one or more solvents selected among light hydrocarbons having boiling points not higher than 70.degree. C.; PA0 one or more non-ionic additives selected among oil soluble propoxylated or propoxylated-ethoxylated phenolic or alkylphenolic compounds; PA0 possible one or more heavy co-caking agents selected among coal-derived oils having boiling points between 200.degree. C. and 400.degree. C., or the residual products of petroleum refining, or mixtures thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.