Method and apparatus for clarifying a slurry

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

2006-08-01

2006-08-01

Hruskoci, Peter A. (Department: 1724)

Liquid purification or separation

Gravitational separator

Material supply distributor

C210S208000, C210S219000, C210S528000, C366S307000, C366S319000

Reexamination Certificate

active

07083050

ABSTRACT:
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.

REFERENCES:
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patent: 3397788 (1968-08-01), Duff et al.
patent: 4054514 (1977-10-01), Oltmann
patent: 4934828 (1990-06-01), Janssen
patent: 5182087 (1993-01-01), Lilja et al.
patent: 5478468 (1995-12-01), Deno et al.
patent: 5944995 (1999-08-01), Sethi et al.
patent: 6358415 (2002-03-01), Leung
patent: 6855262 (2005-02-01), Nyman et al.
patent: 97/35654 (1997-10-01), None

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