Method and equipment for thickening of suspension or pulp

Details Method and equipment for thickening of suspension or pulp Method and equipment for thickening of suspension or pulp

Filed on

1981-05-05

Date issued

1982-08-10

Examiner

Therkorn, Ernest G.

Patent Class

Liquid purification or separation

SubClass

Processes

SubSubClass

Including controlling process in response to a sensed condition

Other Related Categories

210784, 210806, 210 97, 210297, 210402, B01D 3306

Type

Patent

Status

active

Patent number

043437087

Description

ABSTRACT:
A method and equipment for thickening various suspensions, such as, e.g., pulp slurry, waste waters, or mineral sediments. The sludge or slurry is passed into a basin in which a filter unit rotates as partly submerged in the sludge or slurry. The thickened sludge or pulp web is gathered onto the surface of the filter unit from the sludge or the slurry in the basin. The sludge or slurry is passed from the basin to above the sludge or slurry level. In order to pre-thicken the sludge or slurry, part of the liquid contained therein is removed through a wall located between the feeding-in point of the sludge or slurry and the surface level of the sludge or slurry.

REFERENCES:
patent: 2972408 (1961-02-01), Krijgsman
patent: 3064813 (1962-11-01), Smith
patent: 3381821 (1968-05-01), Hellstrom
patent: 3960726 (1976-06-01), Peterson
patent: 4115271 (1978-09-01), Holt
patent: 4146476 (1979-03-01), Spiewok

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