Liquid purification or separation – Processes – Making an insoluble substance or accreting suspended...
Patent
1985-06-12
1987-03-03
Hruskoci, Peter
Liquid purification or separation
Processes
Making an insoluble substance or accreting suspended...
106288B, 209 5, 210734, 210778, 501148, C02F 156
Patent
active
046473823
ABSTRACT:
Aqueous mineral slurries containing 10% by weight or more of finely divided mineral solids are flocculated prior to dewatering and/or thickening, and prepared for redispersion, by treating the slurries with polymers comprising at least about 1% by weight 2-acrylamido-2-methyl propyl sulfonic acid copolymerized with acrylamide and/or other suitable water-soluble monomers. The polymers must have a Brookfield viscosity of at least 7000 cps at 7.5% concentration in water. Flocculation of the mineral slurries with these polymers also provides improved re-dispersibility of the dewatered mineral in the filter cake. During redispersion, additional dry mineral may be added to obtain a final solids content as high as 70% or more. The Brookfield viscosity of the final high solids slurry comprising a significant portion of filter cake treated with the flocculants of this invention is lower than that of untreated material.
REFERENCES:
patent: 3539003 (1970-11-01), Bidwell
patent: 3692673 (1972-09-01), Hoke
patent: 3737333 (1973-06-01), Sawyer, Jr.
patent: 3879283 (1975-04-01), Mercade
patent: 4186027 (1980-01-01), Bell et al.
patent: 4372653 (1982-08-01), Halverson
patent: 4509987 (1985-04-01), Farrar et al.
LandOfFree
Flocculation of high solids mineral slurries does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Flocculation of high solids mineral slurries, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Flocculation of high solids mineral slurries will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1015588