Pulp suspension screening and fractionation apparatus

Details Pulp suspension screening and fractionation apparatus Pulp suspension screening and fractionation apparatus

1990-04-02

1992-06-09

Hajec, Donald T.

Classifying, separating, and assorting solids

Sifting

With liquid treatment

209240, 209250, 210415, D21D 500

Patent

active

051199530

ABSTRACT:
An improved apparatus and process for fractionating pulp suspensions consists of multiple interchangeable modular treating compartments stacked atop one another. Pulp suspension is fractionated in the first compartment, and one of the two resulting fractions flows gravitationally to a second compartment where it is fractionated further. Any of the resulting fractions may be fractionated still further in subsequent compartments as many times as desired. The treating compartments are interchangeable, so removal, addition, or replacement of compartments is relatively easy and quick. Fractionation in each compartment is carried out through centrifugal force.

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patent: 4911828 (1990-03-01), Musselmann et al.
patent: 4913806 (1990-04-01), Hillstrom et al.
patent: 4941970 (1990-07-01), Ans

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