Selective separation of finely-divided minerals by addition of selective collector reagent and centrifugation
US5311997A · kind A · utility
6Cited by
21References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 9, 1992 |
| Grant date | May 17, 1994 |
| Priority date | — |
| Expiry date | Dec 9, 2012 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB28C1/088
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Separation of impurities from kaolin clay is accomplished by conditioning a dispersed aqueous pulp of the clay with an anionic flotation collector, followed by centrifugation or hydrocloning to cause the impurities to settle from a dispersed pulp of the clay without an intermediate froth flotation step or a flotation waste froth is centrifuged or hydrocloned to recover valuable kaolin contained in the froth.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.