Process for preparing a meta-kaolin white pigment from kaolinite

Details Process for preparing a meta-kaolin white pigment from kaolinite Process for preparing a meta-kaolin white pigment from kaolinite

1996-06-07

1997-10-07

Marcheschi, Michael

Compositions: coating or plastic

Materials or ingredients

Pigment, filler, or aggregate compositions, e.g., stone,...

106484, 106485, 501141, 501145, 501149, 4231181, 4233281, 4233282, C04B 1410

Patent

active

056743157

ABSTRACT:
A fluidized bed reactor is supplied with fuel, oxygen-containing gas, and kaolinite, which contains water of crystallization. At least 80% by weight of the kaolinite have particle sizes in the range from 0.1 to 3 mm. A fluidized bed at temperatures in the range from 850.degree. to 950.degree. C. is formed in the fluidized bed reactor. A meta-kaolin white pigment which contains water of crystallization not in excess of 2% by weight is withdrawn from the fluidized bed reactor.

REFERENCES:
patent: 3519453 (1970-07-01), Morris et al.
patent: 5011534 (1991-04-01), Berube et al.
patent: 5393340 (1995-02-01), Slepetys et al.

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