Flotation of coal with latex emulsions of hydrocarbon animal or vegetable based oil
US4340467A · kind A · utility
18Cited by
7References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 20, 1980 |
| Grant date | Jul 20, 1982 |
| Priority date | — |
| Expiry date | Mar 20, 2000 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB03D2203/08
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Employment of a latex emulsion prepared from a hydrocarbon, animal or vegetable based oil with a hydrophobic water-in-oil emulsifier and a hydrophilic surfactant in the froth flotation of coal improves coal recovery without increasing the ash content. The emulsifier employed should have an HLB value of 5.0 or less while the surfactant should have an HLB value of 9.0 or higher.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.