Fluorinated hydrocarbons in coal mining and beneficiation
US4178233A · kind A · utility
5Cited by
9References
34Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 31, 1978 |
| Grant date | Dec 11, 1979 |
| Priority date | — |
| Expiry date | Jul 31, 1998 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB03B9/005
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A method of using fluorinated hydrocarbons as a carrier to convey mined coal to a separation station. The carrier acts as a parting liquid for beneficiating the coal. The carrier is recovered and returned to the mine for conveying more coal. Some of the returned carrier may be used at the mining face as a dust suppressant. Ash from burning the coal may be returned with the carrier where it is disposed of as waste material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.