Sintered-glass-granule filter medium

Details Sintered-glass-granule filter medium Sintered-glass-granule filter medium

1978-03-22

1980-09-30

Lesmes, George F.

Liquid purification or separation

Filter

Material

210509, 210263, 210290, 210268, 428406, 106 40V, 106 47R, B01D 2310, B01D 1500, B01D 1502

Patent

active

042254434

ABSTRACT:
Sintered glass pellets which generally decrease in particle size as they increase in specific gravity provide a unique filter medium which varies from larger pellets at its inlet (upstream) upper portion to smaller pellets at its outlet (downstream) lower portion. In view of the variation in specific gravity, particles forming the filter medium generally resume substantially their initial respective positions after the medium is back-flushed for cleaning. Although pellets throughout the medium differ in specific gravity, they are made of the same ingredients. The individual pellets are formed by granulating finely-ground glass with a suitable binder and sintering the resulting granules.

REFERENCES:
patent: 3354024 (1967-11-01), D'Eustochio et al.
patent: 3382983 (1968-05-01), Stewart
patent: 3414394 (1968-12-01), Poad
patent: 3497068 (1970-02-01), Hirsch
patent: 3704786 (1972-12-01), Lerner et al.
patent: 3811851 (1974-05-01), Mackenzie
patent: 3814247 (1974-06-01), Hirs
patent: 3842006 (1974-10-01), Burt
patent: 3900303 (1975-08-01), Mackenzie
patent: 3929130 (1975-12-01), Hargest
patent: 4081259 (1978-03-01), Bassin et al.
patent: 4113915 (1978-09-01), Schott

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