Promotors for froth floatation of coal
US4678562A · kind A · utility
37Cited by
3References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 18, 1986 |
| Grant date | Jul 7, 1987 |
| Priority date | — |
| Expiry date | Feb 18, 2006 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB03D2203/08
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Disclosed is an improved process wherein coal particles are beneficiated by froth flotation under coal froth flotation conditions to separate the desired coal particles from remaining unwanted ash and like gangue material. The improvement of the present invention comprises conducting the froth flotation in the presence of an effective proportion of a hydrophobic, non-ionc promoter which is a C.sub.12 -C.sub.30 fatty alcohol or its C.sub.3 or higher alkoxylated derivative.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.