Apparatus and method for extracting impurities from a pulpous sl

Details Apparatus and method for extracting impurities from a pulpous sl Apparatus and method for extracting impurities from a pulpous sl

1994-06-08

1996-02-20

Terrell, William E.

Classifying, separating, and assorting solids

Fluid suspension

Liquid

209725, 210294, 210787, B04C 304

Patent

active

054922240

ABSTRACT:
An apparatus (10) for extracting impurities from a pulpous slurry. The apparatus has an upper housing (11), a conical, lower housing (12) and an auxiliary chamber (13). The upper housing has a separation chamber (27) having an upper shell entry portion (31) for causing a first stream of slurry to rotate within the separation chamber and a lower shell entry portion (35) for causing a second stream of slurry to rotate within the separation chamber in a direction opposite to the first stream. The rotation of the streams causes heavy impurities to collect along the outermost portion of the separation chamber. The opposite directions of rotation causes a generally stagnant zone between the rotating streams.

REFERENCES:
patent: 3452862 (1969-07-01), Amadon et al.
patent: 3662885 (1972-05-01), Dorph
patent: 4280902 (1981-07-01), Jacobsen et al.
patent: 4316768 (1982-02-01), Coddard
patent: 4952314 (1990-08-01), Henricson et al.
patent: 5009796 (1991-04-01), Petrik et al.
patent: 5124049 (1992-06-01), Maness
patent: 5186823 (1993-02-01), Robinson

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