Title:
METHOD OF REMOVING SPECTATOR IONS FROM AQUEOUS SUSPENSIONS OF SOLID PARTICLES
Document Type and Number:
WIPO Patent Application WO2005016482
Kind Code:
A3
Abstract:
The present invention provides a method of removing spectator ions and contaminants from aqueous suspensions of solid particles. In accordance with the method of the invention, the solid particles are transported across a phase boundary into a non-polar organic solvent, leaving the spectator ions and contaminants in the aqueous phase. To facilitate the efficient transportation of the solid particles across the phase boundary, the surface of the solid particles is coated with an amphiphilic polyelectrolyte. If desired, the solid particles can be recovered from the organic phase by evaporating the organic solvent.
Inventors:
ADAIR JAMES H (US)
SZEPESI CHRISTOPHER J (US)
RAST HEBER E III (US)
CHU MIKE S H (US)
FENG XIANGDONG (US)
SZEPESI CHRISTOPHER J (US)
RAST HEBER E III (US)
CHU MIKE S H (US)
FENG XIANGDONG (US)
Application Number:
PCT/US2004/026320
Publication Date:
April 14, 2005
Filing Date:
August 13, 2004
Export Citation:
Assignee:
FERRO CORP (US)
PENN STATE RES FOUND (US)
ADAIR JAMES H (US)
SZEPESI CHRISTOPHER J (US)
RAST HEBER E III (US)
CHU MIKE S H (US)
FENG XIANGDONG (US)
PENN STATE RES FOUND (US)
ADAIR JAMES H (US)
SZEPESI CHRISTOPHER J (US)
RAST HEBER E III (US)
CHU MIKE S H (US)
FENG XIANGDONG (US)
International Classes:
B01D11/00; C01G23/00; B01D; (IPC1-7): B01D11/00
Foreign References:
| US5783165A | 1998-07-21 | |||
| US5003876A | 1991-04-02 | |||
| US3957504A | 1976-05-18 | |||
| US2758911A | 1956-08-14 | |||
| US20030133869A1 | 2003-07-17 |
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