Conditioner for flotation of coal
US4474619A · kind A · utility
22Cited by
8References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 14, 1981 |
| Grant date | Oct 2, 1984 |
| Priority date | — |
| Expiry date | Oct 14, 2001 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB03D2203/08
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The froth flotation of coal in the presence of a condensate of an alkanolamine with at least about 0.8 equivalent of a fatty acid improves the separation of carbonaceous solids possessing relatively high heat value from ash and other inert mineral matter. Flotation in the presence of this condensate is particularly effective to enhance the recovery of oxidized bituminous coal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.