Industrial electric heating furnaces – Electroslag remelting device – Body detail
Patent
1983-11-10
1986-09-16
Envall, Jr., Roy N.
Industrial electric heating furnaces
Electroslag remelting device
Body detail
164515, H05B 360
Patent
active
046126490
ABSTRACT:
A process for refining metal in a crucible containing a layer of molten slag, wherein molten metal passes downwardly through the slag and resolidifies as an ingot thereunder. The slag is kept molten by passing electrical current through the slag layer and between a first electrode and a second electrode. The second electrode has liquid or gas cooling means as an integral part thereof. Current is passed between the first electrode and the second electrode through at least one electrically conductive member interposed between the slag and the second electrode. The electrically conductive member has a melting temperature above the melting temperature and below the bulk temperature of the slag. A portion of the surface of the electrically conductive member that is in contact with the slag has a temperature above the freezing temperature of the slag. The first electrode may be a consumable electrode which is partially immersed in the layer of molten slag such that it gradually melts, and drops of metal move downwardly therefrom. The second electrode is usually the crucible but may be a non-consumable electrode which is partially immersed in the layer of molten slag.
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Foster Richard A.
Griebel, III Arthur H.
Cabot Corporation
Envall Jr. Roy N.
Linne R. Steven
Schuman Jack
Thompson Gregory P.
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