Process of coal agglomeration
US5238629A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 9, 1991 |
| Grant date | Aug 24, 1993 |
| Priority date | — |
| Expiry date | Aug 9, 2011 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10L5/06
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A process for the agglomeration of coal fines comprises the steps of mixing the coal fines with an agglomerating liquid which is further comprised of a reagent and a solvent portion. The coal fines are thereafter separated from the agglomerating liquid, dried, and preferentially compressed into pellet form. The process also entails the recovery and return of the agglomerating liquid. The agglomerating liquid of the present invention includes the reagent portion which is a member or a combination of the group consisting of aromatic tertiary amines, nonaromatic cyclic amines or primary organic amines. The solvent is an organic solvent, desirably a member or a combination of the group consisting of toulene, chloroform, carbon disulfide or dimethylacetamide. The pellet formed from the process of the present invention is uniquely water resistant and of controllable hardness.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.