Process for improved magnetic beneficiation of clays
US4281799A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 6, 1979 |
| Grant date | Aug 4, 1981 |
| Priority date | — |
| Expiry date | Apr 6, 1999 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01P2006/80
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An improved method for separating minute, weakly magnetically susceptible particles from an aqueous clay-water slurry containing said particles in minor concentration with substantially non-magnetic minute mineral particles. In accordance with the improvement, the effects of subjecting said particles to separation in a magnetic field, are augmented by subjecting the slurry to a preliminary treatment which mechanically works the dispersed phase of the slurry as to effect release of the contaminant particles. Such working may, for example, be provided by subjecting the slurry, preferably at high solids content, to mechanical shear, to high velocity impact, or to kneading.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.