Metallurgical apparatus – Means for melting or vaporizing metal or treating liquefied... – With means to discharge molten material
Patent
1991-03-19
1992-08-18
Kastler, Scott
Metallurgical apparatus
Means for melting or vaporizing metal or treating liquefied...
With means to discharge molten material
222600, B22D 4108
Patent
active
051392380
ABSTRACT:
An interchangeable wearable refractory part for a discharge opening of a metallurgical vessel is provided with at least one ceramic filter for filtering a molten metal stream. The refractory part, such as a sliding valve plate, casting pipe, discharge sleeve or nozzle, or stationary base plate, may have the ceramic filter mounted in a passage opening thereof. The refractory parts are wearable, and thus are from time to time, replaced. The service life of the ceramic filters are chosen to correspond with the life span of the refractory part. The ceramic filter can either be a single filter in the passage opening, or a multi-stage filter including a coarse filter for larger impurities, a fine filter for smaller impurities as well as an absorption or reaction filter for dissolved impurities.
REFERENCES:
patent: 4573616 (1986-03-01), Shapland
patent: 4765833 (1988-08-01), Narumiya et al.
patent: 4789140 (1988-12-01), Lirones
patent: 4928746 (1990-05-01), Butler et al.
patent: 4990059 (1991-02-01), James
patent: 5004545 (1991-04-01), Wahl et al.
Didier-Werke AG
Kastler Scott
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