Metallurgical apparatus – Means for melting or vaporizing metal or treating liquefied... – By separating metal in a molten mass from undesired...
Patent
1984-04-20
1986-02-25
Rutledge, L. Dewayne
Metallurgical apparatus
Means for melting or vaporizing metal or treating liquefied...
By separating metal in a molten mass from undesired...
266275, 222591, C21C 704
Patent
active
045724865
ABSTRACT:
The present invention provides an improved filtering vessel for filtering molten metal. The filtering vessel of the present invention is provided with a partition and fitted with a removable filter blade. The partition provides support for the removable filter blade. The removable filter blade contains a filter element. Molten metal is filtered by passing through the filter element contained in the removable filter blade. Molten metal can be made to pass through the filter element by the appropriate application of pressure to the surface of the unfiltered molten metal, by tilting the vessel in such a manner as to cause hydrostatic pressure to force unfiltered molten metal through the filter element, or by removing filtered molten metal with a ladle and thereby causing a differential hydrostatic pressure between the region of the vessel containing filtered molten metal and the region of the vessel containing unfiltered molten metal. During operation molten metal can be intermittently back-flushed through the filter element. Back-flushing molten metal through the filter element extends the life of the filter element, and thereby increases the hours the filtering vessel may be used between changes of the removable filter blade.
REFERENCES:
patent: 361352 (1887-04-01), Donovan
patent: 4394271 (1983-07-01), Groteke
patent: 4444377 (1984-04-01), Groteke et al.
Groteke Daniel E.
Kearney Avery L.
McDowell Robert L.
Metcast Associates, Inc.
Rutledge L. Dewayne
Weins Janine J.
Weins Michael J.
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