Ceramic filter and process for making it

Details Ceramic filter and process for making it Ceramic filter and process for making it

1990-11-21

1992-03-24

Dawson, Robert A.

Liquid purification or separation

Filter

Material

21050025, 210504, 210506, 2105101, 264 451, 264 60, B01D 3321, B01D 2400

Patent

active

050985710

ABSTRACT:
A process for manufacturing a ceramic filter having a given pore size required as a filter membrane and also having superior alkali resistance and acid resistance. The filter of the present invention is produced by preparing an aggregate comprising alumina coarse particles and a sintering aid comprising alumina-zirconia mixed particles containing not more than 90 wt. % of alumina, blending said alumina coarse particles and alumina-zirconia mixed particles so as for alumina to be in an amount of from 80 to 99 wt. % based on the total weight of the starting materials, forming the blended starting materials to have a desired shape, and firing the formed product.

REFERENCES:
patent: 4652411 (1987-03-01), Swarr et al.
patent: 4839049 (1989-06-01), Kinney, Jr. et al.
patent: 4929406 (1990-05-01), Abe et al.
patent: 4981590 (1991-06-01), Van 'T Veen et al.
patent: 4983423 (1991-01-01), Goldsmith

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