Method and apparatus for fiber suspension dewatering

Details Method and apparatus for fiber suspension dewatering Method and apparatus for fiber suspension dewatering

1975-03-26

1977-06-21

Spear, Jr., Frank A.

Liquid purification or separation

Plural distinct separators

Filters

210330, 209268, 209306, 162342, B01D 3306, B01D 3310

Patent

active

040310132

ABSTRACT:
A method and apparatus for dewatering of cellulose pulp or other fiber suspensions. A suspension of relatively low solids concentration is passed into a sealed housing through an inlet, substantially filling the housing. The suspension is dewatered by bringing it into contact with perforated surfaces of a pair of drums or the like mounted for rotation about a vertical axis within the housing. Liquid from the suspension passes into an interior drum chamber, and at least a portion thereof is expelled from the housing through a liquid outlet. After passing a nip point between the two drums, the suspension has a higher solids concentration than the desired product suspension, and an amount of liquid is added thereto from the drum interior to dilute it to the final concentration.

REFERENCES:
patent: 2860973 (1958-11-01), Wells
patent: 3019903 (1962-02-01), Daane
patent: 3241676 (1966-03-01), Neuville et al.
patent: 3263598 (1966-08-01), Sylla
patent: 3845863 (1974-11-01), Savia

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