Promoters for froth flotation of coal
US4589980A · kind A · utility
54Cited by
23References
16Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 1, 1984 |
| Grant date | May 20, 1986 |
| Priority date | — |
| Expiry date | Mar 1, 2004 |
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 promoter which is at least C.sub.10 aliphatic carboxylic acid or an aliphatic ester thereof which is devoid of nitrogen atoms; the hydroxylated, oxidized, or alkoxylated derivative of said acid or ester promoters; and mixtures thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.