Method and apparatus for clarifying a slurry

Details Method and apparatus for clarifying a slurry Method and apparatus for clarifying a slurry

B - Operations, Transporting

01

D

B01D 21/24 (2006.01) B01D 21/01 (2006.01) B01F 7/16 (2006.01) B01F 7/24 (2006.01) B01F 7/00 (2006.01)

Patent

CA 2449657

The invention relates to a method of clarifying and/or thickening a solution containing solids i.e. a slurry, and the apparatus for accomplishing this. Using the method and apparatus of the present invention, the flocculant to be fed into the clarification and thickening equipment is mixed evenly and with a small shear force into the slurry in the feedwell of the apparatus. The feedwell is equipped with a mixing device. The slurry is taken onwards from the feedwell evenly into the clarification tank inside the underflow layer, which enables the separation of a clear overflow solution.

L'invention concerne un procédé de clarification et/ou d'épaississement d'une solution contenant une matière solide, par exemple de la boue, et l'appareil permettant de mettre en oeuvre ledit procédé. A l'aide du procédé et de l'appareil de la présente invention, le floculant destiné à être injecté dans l'équipement de clarification et d'épaississement est mélangé à la boue de manière uniforme et avec une faible force de cisaillement dans le puits d'alimentation de l'appareil. Le puits d'alimentation de l'appareil est équipé d'un dispositif mélangeur. La boue est transférée de manière uniforme du puits d'alimentation dans le réservoir de clarification de la couche inférieure, permettant de séparer une solution de surface claire.

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