Flotation machine and process for removing impurities from coals
US5601703A · kind A · utility
14Cited by
32References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 5, 1995 |
| Grant date | Feb 11, 1997 |
| Priority date | — |
| Expiry date | Dec 5, 2015 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB03D1/20
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The present invention is directed to a type of flotation machine that combines three separate operations in a single unit. The flotation machine is a hydraulic separator that is capable of reducing the pyrite and other mineral matter content of a coal. When the hydraulic separator is used with a flotation system, the pyrite and certain other minerals particles that may have been entrained by hydrodynamic forces associated with conventional flotation machines and/or by the attachment forces associated with the formation of microagglomerates are washed and separated from the coal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.