Method for producing high opacifying kaolin pigment

Details Method for producing high opacifying kaolin pigment Method for producing high opacifying kaolin pigment

1988-12-22

1991-09-10

Dixon, Jr., William R.

Compositions: coating or plastic

Materials or ingredients

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

501145, 501147, 106446, 106442, C04B 3300, C09C 136

Patent

active

050473751

ABSTRACT:
A method of producing a high opacity paper filler pigment which comprises subjecting an iron-stained titania-containing kaolin to beneficiation by froth flotation or high intensity magnetic separation; recovering the froth or magnet rejects, dewatering and drying the rejects to produce a kaolin enriched in titania, and calcining the same at a temperature in the range of about 1500.degree. to about 2200.degree. F.

REFERENCES:
patent: 3586523 (1971-06-01), Fanselow et al.
patent: 3765921 (1973-10-01), Puskar
patent: 4014709 (1977-03-01), Dykstra et al.
patent: 4346178 (1982-08-01), Economou
patent: 4419228 (1983-12-01), Cook et al.
patent: 4468317 (1984-08-01), Turner, Jr.
patent: 4826536 (1989-05-01), Raythatha et al.
patent: 4851048 (1989-06-01), Jones et al.

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