Precipitated calcium carbonate

Details Precipitated calcium carbonate Precipitated calcium carbonate

1992-11-13

1994-08-30

Lewis, Michael

Chemistry of inorganic compounds

Carbon or compound thereof

Oxygen containing

423430, 423160, 423165, 106464, C01F 1118

Patent

active

053426002

ABSTRACT:
A method of preparing precipitated calcium carbonate which comprises slaking quicklime in an aqueous medium, passing the suspension of calcium hydroxide through a sieve having an aperture size in the range of 40 to 70 microns, carbonating the calcium hydroxide and separating the calcium carbonate from the aqueous medium in which it is suspended. The sieved calcium hydroxide is subjected to high energy, high shear agitation which is terminated prior to carbonation. During the carbonation, the suspension of calcium hydroxide is subjected to relatively lower energy and shear agitation compared to the previous high energy, high shear agitation.

REFERENCES:
patent: 2081112 (1937-05-01), Statham et al.
patent: 2964382 (1960-12-01), Hall, Jr.
patent: 3126253 (1964-03-01), Podschus
patent: 3268387 (1966-08-01), Casciani et al.
patent: 3320026 (1967-05-01), Waldeck
patent: 3920800 (1975-11-01), Harris
patent: 4018877 (1977-04-01), Woode
patent: 4157379 (1979-06-01), Arika et al.
patent: 4367207 (1983-01-01), Vanderheiden
patent: 4714603 (1987-12-01), Vanderheiden
patent: 5075093 (1991-12-01), Tanaka
patent: 5164172 (1992-11-01), Katayama et al.

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