Process for removing sulfur from coal
US4204840A · kind A · utility
2Cited by
4References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 19, 1978 |
| Grant date | May 27, 1980 |
| Priority date | — |
| Expiry date | Jun 19, 1998 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10L9/02
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A process for reducing the pyritic sulfur content of coal comprising the steps of: PA1 (1) contacting an aqueous slurry of water, an alkaline earth metal base and pyrite-containing coal at elevated temperature with oxygen, said alkaline earth metal base being present in an amount at least equal to the stoichiometric amount of pyrite, and said aqueous slurry being maintained at a pH of from about 5.0 to about 12.0; and PA1 (2) recovering coal particles of reduced pyritic sulfur content.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.