Patent ID: 6162387
Filing Date: 2000-12-19
Classification: C21C,C22B,Y10S

Abstract:
A vacuum refining furnace system for refining molten metal in an evacuated and sealed space, said system comprising:a refining furnace having a furnace throat;a sealing flange disposed on an outer surface of the refining furnace;a sealing cover removably attached to the refining furnace so as to cover the furnace throat and to define the evacuated and sealed space, the sealing cover having a lower end part sealingly engageable with the sealing flange;a slag-stopping dummy flange disposed on the outer surface of the refining furnace at a position between the furnace throat and the sealing flange, the dummy flange having an outer circumference located inside of an inner circumference of the lower end part of the sealing cover.