Filters for light metals

Details Filters for light metals Filters for light metals

C - Chemistry, Metallurgy

04

B

C04B 38/06 (2006.01) B01D 39/20 (2006.01) C03C 14/00 (2006.01) C04B 28/34 (2006.01) C04B 41/50 (2006.01) C04B 41/67 (2006.01) C22B 9/02 (2006.01) C22B 21/06 (2006.01)

Patent

CA 2064617

FS 1480 ABSTRACT FILTERS FOR LIGHT METALS 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.

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