Surface chemistry control for selective fossil resin flotation
US5318185A · kind A · utility
0Cited by
7References
11Claims
0Family size
Inventors
Key dates
| Filing date | Jul 15, 1992 |
| Grant date | Jun 7, 1994 |
| Priority date | — |
| Expiry date | Jul 15, 2012 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB03D2203/08
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A froth flotation method is disclosed for separating fine particles of fossil resin from by use of frothing reagents which include an aliphatic organic compound having a polar group and containing not more than four carbon atoms. Butanol is an effective frothing reagent in this method.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.