Process of refining clay

Details Process of refining clay Process of refining clay

C - Chemistry, Metallurgy

04

B

261/44

C04B 33/02 (2006.01) B03C 1/02 (2006.01) B03C 1/032 (2006.01)

Patent

CA 1274553

ABSTRACT OF THE DISCLOSURE A process for the wet processing of kaolin clay which includes a step for physically removing discrete particles of colored impurities by high gradient magnetic separation (HGMS) in which all processing steps including HGMS are carried out with the feed clay slurry at high solids, above 50%, and the magnetically purified clay slurry is also recovered at high solids, above 50%. A feature of the invention is that the HGMS unit is operated in a novel manner such as to avoid the dilution of the magnetically purified clay slurry with water during all stages of HGMS treatment without adverse effect on the yield of magnetically purified clay.

548709

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