Method for producing high opacifying kaolin pigment

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

C - Chemistry, Metallurgy

09

C

6/208, 9/66

C09C 3/00 (2006.01) D21H 17/69 (2006.01)

Patent

CA 2007711

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° to about 2200°F.

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