Filters for light metals

Details Filters for light metals Filters for light metals

1992-03-30

1992-12-08

Sever, Frank

Liquid purification or separation

Processes

Separating

75409, 75412, 210496, 2105101, B01D 3920

Patent

active

051695421

ABSTRACT:
Filters for filtering molten light metals comprise a reticular foam having a composition comprising graphite, wollastonite, silica and an alkali phosphate glass. The filters have a low hardness and can readily be machined accurately from large pieces of the filter material. In a preferred embodiment the exterior surfaces of the large pieces of filter are coated with a composition comprising graphite and a binder prior to firing and then machined.

REFERENCES:
patent: 3962081 (1976-06-01), Yarwood et al.

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