Method for thickening and thickening apparatus

Details Method for thickening and thickening apparatus Method for thickening and thickening apparatus

B - Operations, Transporting

01

D

B01D 21/24 (2006.01)

Patent

CA 2678307

The invention relates to a method and apparatus for thickening liquids carrying suspended particles, wherein a feed slurry is fed to a thickener tank (2) via a feedwell (4). The problem to be solved is to reduce loss of mixing in the feedwell caused by variations in the flowrate of the feed slurry. The solution is to vary the cross-sectional area of the feedpipe (8) in response to variations in the flowrate inside the feedpipe, in order to maintain a sufficient velocity for slurry exiting the feedpipe (8).

La présente invention concerne un procédé et un appareil d'épaississement de liquides supportant des particules en suspension. Une pâte d'alimentation est amenée dans une cuve d'épaississement (2) via un puits d'alimentation (4). Le problème à résoudre consiste à réduire la perte de mélange dans le puits d'alimentation provoquée par les variations lors de l'écoulement de la pâte d'alimentation. La solution est de modifier la zone de section transversale du tuyau d'alimentation (8) en réponse aux variations lors de l'écoulement dans le tuyau d'alimentation, de manière à maintenir une vitesse suffisante pour la sortie de la pâte du tuyau d'alimentation (8).

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