High solids aqueous silica dispersion

Details High solids aqueous silica dispersion High solids aqueous silica dispersion

1978-05-30

1981-02-03

Gerris, Bradley R.

Chemistry: physical processes

Physical processes

106288B, 106309, 252313S, B01J 810, B01J 1300

Patent

active

042486009

ABSTRACT:
A method for increasing the bulk density of silica. Acid is added to an aqueous silica wet cake slurry to bring the pH to about 1.8 to 4.0, and dry fine particle silica is added with an agitator rpm of at least 2000 rpm. The acid and silica are alternately added until a homogeneous consistency is obtained with a solids concentration of above 30%.

REFERENCES:
patent: 3110606 (1963-11-01), Bertorelli
patent: 3441387 (1969-04-01), Dye
patent: 3832434 (1974-08-01), Flood et al.
patent: 3857925 (1974-12-01), Sirianni et al.
patent: 3931036 (1976-01-01), Pierce
patent: 3961968 (1976-06-01), Wales
patent: 4126423 (1978-11-01), Kongsgaarden
patent: 4126424 (1978-11-01), Kongsgaarden

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