Silica glass filter

Details Silica glass filter Silica glass filter

1990-12-26

1992-02-18

Dawson, Robert A.

Liquid purification or separation

Filter

Supported, shaped or superimposed formed mediums

55487, 55523, 21050026, 210503, 2105101, 264112, 264113, 264DIG48, 4283126, 428325, 428332, 428426, 428428, B01D 2400, B01D 3906

Patent

active

050891340

ABSTRACT:
A silica glass filter comprises a porous support body composed of amorphous silica particles as a porous sintered body and having a purity of 99.9% or more and containing 150 ppm or less in total of impurities including alkali, alkali metal, heavy metal and/or elements of III B group, and a filtration layer formed on the support body. The filtration layer is composed of amorphous silica particles as a porous sintered body in a fine mode and has substantially the same purity as that of the support body.

REFERENCES:
patent: 3369665 (1968-02-01), Paulson et al.
patent: 4656021 (1987-04-01), Tanabe et al.
patent: 4698157 (1987-10-01), Gillot
patent: 4810273 (1989-03-01), Komoda

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