Method and apparatus for pressurized dewatering

Details Method and apparatus for pressurized dewatering Method and apparatus for pressurized dewatering

1989-05-08

1990-09-11

Spear, Frank

Liquid purification or separation

Plural distinct separators

Filters

34 95, 210331, 210406, 210486, 2105101, B01D 2980

Patent

active

049560883

ABSTRACT:
A filtering method in which an object to be filtered and dewatered is brought through a finely porous suction face saturated with liquid, into hydraulic connection with a liquid situated under a negative pressure relative to the object to be dewatered. The filter plate or equivalent and the material to be filtered which adheres to the plate by the liquid suction, are surrounded by a pressure-tight cover. A positive pressure relative to atmospheric pressure is introduced into this cover, by which removal of liquid out of the material to be filtered is intensified. A device for providing such filtration is also provided.

REFERENCES:
patent: 1524916 (1925-02-01), Demme
patent: 3452874 (1969-07-01), Keller et al.
patent: 4092247 (1978-05-01), Madsen
patent: 4116831 (1978-09-01), Keat
patent: 4169794 (1979-10-01), Badino
patent: 4255264 (1981-03-01), Madsen
patent: 4292177 (1981-09-01), Stahl et al.
patent: 4357758 (1982-11-01), Lampinen
patent: 4856204 (1989-08-01), Hindstron
patent: 4863656 (1989-09-01), Hindstrom

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