Apparatus and method for filtration of molten metal
OwnerDaniel E. Grotekeinventor
Life of this patent
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Abstract
An apparatus and method for filtering molten metal is disclosed. The apparatus includes a crucible, a portion of which is a porous filter material. Attached to the rim of the crucible is a shock resistant ring. The crucible is positioned such that the porous filter material is submerged in the molten metal, and the rim is held above the surface of the molten metal by a brace which is attached to a fixed bracket. The molten metal is filtered by seeping through the porous filter material into the crucible. The filtered molten metal is extracted from the crucible.
Claims18
A liquid metal filter apparatus for purifying a metal bath, comprising:
- a crucible having a rim and a bottom;
- a portion of said crucible being a porous ceramic material having an open cell structure characterized by a plurality of interconnected pores, said ceramic material serving as a filter;
- a shock resistant ring attached to said rim;
- a brace rigidly attached to said ring;
- and
- a bracket rigidly positioned external to the molten metal bath and said brace being attached to said bracket for rigidly positioning said crucible with respect to the molten metal bath.
A method for filtration of liquid metal from a molten bath comprising:
- providing a crucible with a rim and a ring attached thereto, said ring being more shock resistant than said crucible, said crucible having a bottom with a passage therethrough which is fitted with a porous filter;
- submerging said filter into said liquid metal while maintaining said rim above the surface of said liquid metal;
- rigidly positioning said crucible with respect to the molten metal bath by means of a brace rigidly attached to said ring and to a bracket external to said liquid metal bath;
- allowing liquid metal to pass through said filter to fill said crucible;
- and
- extracting said liquid metal from said crucible.
Dependencies are inferred from the claim text.