Filtration of molten ferrous metal

Details Filtration of molten ferrous metal Filtration of molten ferrous metal

1990-04-10

1991-09-03

Andrews, Melvyn J.

Specialized metallurgical processes, compositions for use therei

Processes

Producing or treating free metal

75582, C22B 902

Patent

active

050451111

ABSTRACT:
The filtration of molten ferrous metal is accomplished by providing a porous ceramic filter preferably comprising particles of alumina and partially stabilized zirconia that are spaced by interconnected cells to form circuitous and tortuous pathways throughout the ceramic body. The filter is a disc-like structure that can have different surface configurations such as corrugations or a waffle design. The filter can be flat-surfaced with an array of cylindrical openings or counterboard openings extending completely through the filter, or with openings extending partially into the filter from the upper and lower sides of the filter. Several relatively thin filters can be arranged in tandem, if desired.

REFERENCES:
patent: 4165235 (1979-08-01), Dantzig et al.
patent: 4573664 (1986-03-01), Prendergast
patent: 4667939 (1987-05-01), Luyckx

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