Apparatus for reheating molten steel in ladles

Details Apparatus for reheating molten steel in ladles Apparatus for reheating molten steel in ladles

1980-10-07

1982-08-31

Envall, Jr., Roy N.

Industrial electric heating furnaces

Arc furnace device

Furnace body detail

373 95, H05B 700

Patent

active

043474004

ABSTRACT:
An apparatus for reheating molten steel in a ladle under a shielded gaseous atmosphere comprises a vertically movable electrode housing, a lower portion of which extends through a tight passage formed in the ladle cover or in the cover of a ladle-containing vessel. This passage comprises a hollow water-cooled jacket or belt assembly surrounding the housing and provided with recesses for scraper rings and a packing and connected, through a flexible and vacuum-tight coupling, to a flanged collar rigid with the cover. Stacked refractory rings of insulating material are interposed between the belt and the flanged collar. The packing may be replaced by an inflated flexible tubular torus. A conduit is provided for supplying lubricant to the surfaces in mutual sliding contact.

REFERENCES:
patent: 3549773 (1970-12-01), Rossdorf et al.
patent: 4216347 (1980-08-01), Holtermann et al.

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