Process for improving low quality coal
US4508539A · kind A · utility
95Cited by
2References
15Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 16, 1983 |
| Grant date | Apr 2, 1985 |
| Priority date | — |
| Expiry date | Feb 16, 2003 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10L9/00
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A process for improving low quality coal is disclosed, comprising subjecting a crushed low quality coal to a press treatment and a heat treatment. The process of the invention permits the production of improved coal from low quality coal, said improved coal having a high mechanical strength and a high density, and so forth, which realize the ease of handling in storage and transportation without a danger of spontaneous combustion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.