Process for the dewatering of aqueous suspensions

Details Process for the dewatering of aqueous suspensions Process for the dewatering of aqueous suspensions

C - Chemistry, Metallurgy

02

F

C02F 11/14 (2006.01)

Patent

CA 2557802

A process of dewatering an aqueous suspension comprising treating the suspension with a dewatering amount of a reverse phase polymer, and subjecting the suspension to a mechanical dewatering to form a cake, characterised in that the reverse phase polymer only partially inverts to bring about flocculation and thickening of the suspension, and then fully inverts during the further dewatering to form a cake.

Procédé de déshydratation d'une suspension aqueuse, consistant à traiter la suspension avec une quantité déshydratante d'un polymère à phase inverse, et à soumettre la suspension à une déshydratation mécanique dans le but de former un pain. Ce procédé se caractérise en ce que le polymère à phase inverse ne n'inverse que partiellement pour provoquer une floculation et un épaississement de la suspension, puis complètement lors de la poursuite de la déshydratation pour former un pain.

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