Flotation method for removing colored impurities from kaolin clay
US6378703B1 · kind B1 · utility
9Cited by
10References
12Claims
0Family size
Assignee
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Key dates
| Filing date | Nov 30, 2000 |
| Grant date | Apr 30, 2002 |
| Priority date | — |
| Expiry date | Nov 30, 2020 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB03D2201/02
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An improved method for purifying titania contaminated kaolin clay by froth flotation which features the use an hydroxamate flotation collector at a neutral or mildly alkaline pH wherein a slurry of the impure clay is conditioned for the flotation step in a baffled conditioning apparatus provided with mean for imparting sufficient mechanical energy to heat a dispersed slurry of the impure clay before flotation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.