Method for processing crude bentonite

Details Method for processing crude bentonite Method for processing crude bentonite

C - Chemistry, Metallurgy

01

B

C01B 33/40 (2006.01) D21H 21/02 (2006.01)

Patent

CA 2688084

The present invention relates to a method for processing crude bentonite, process bentonite obtainable by the method according to the present invention, use of this bentonite in papermaking and/or finishing, in particular, as a filler, coating pigment, retention agent or rheological additive, as a pitch control agent, for the control of sticky deposits in the paper machine or to mask and/or reduce the residual chemicals in pigments.

La présente invention porte sur un procédé de traitement de la bentonite brute, sur la bentonite traitée pouvant être obtenue par le procédé selon la présente invention, sur l'utilisation de cette bentonite dans la fabrication du papier et/ou dans le finissage, en particulier, en tant que charge, pigment de revêtement, agent de rétention ou additif rhéologique, en tant qu'agent de régulation de la poix, pour lutter contre les dépôts collants dans la machine à papier ou pour masquer et/ou réduire les produits chimiques résiduels dans les pigments.

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