Method for treatment of a fibrous material-fluid mixture

Details Method for treatment of a fibrous material-fluid mixture Method for treatment of a fibrous material-fluid mixture

1990-06-29

1993-08-24

Morry, Theodore

Cleaning and liquid contact with solids

Processes

Longitudinally traveling work of bar, strip, strand, sheet...

134 21, 134 26, 134 34, 8156, 68 44, 162 60, 210391, 210400, 210456, B08B 102, D21C 918

Patent

active

052385019

ABSTRACT:
The invention relates to a method and device for the washing of a medium consistency fibrous slurry, especially a chemical pulp slurry in which the slurry is fed at an inclined angle onto a substantially horizontal portion of circulating filter belt, and then distributed over substantially the entire working width of the filter belt. The distributed slurry is then washed with a washing liquid under localized pressure to produce a slurry having a medium consistency range, i.e., about 8 to 15 percent. In order to increase the consistency to 20 to 40 weight percent, preferably about 30 to about 35 weight percent, the washed slurry is passed to a pressing zone.

REFERENCES:
patent: 1790714 (1931-02-01), Mantius
patent: 2337068 (1943-12-01), Simpson et al.
patent: 3564631 (1971-02-01), Burling
patent: 3601039 (1971-08-01), Schovel
patent: 4014736 (1977-03-01), Sexton
patent: 4046621 (1977-09-01), Sexton
patent: 4154644 (1979-05-01), Evidsson
patent: 4608122 (1986-08-01), Klein et al.
patent: 4879034 (1989-11-01), Bastgen
patent: 4900400 (1990-02-01), Gudmundsson et al.

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