Electric induction heating furnace

Details Electric induction heating furnace Electric induction heating furnace

1977-06-30

1979-02-13

Envall, Jr., R. N.

H05B 1100

Patent

active

041397223

ABSTRACT:
An electric induction heating furnace comprises a crucible having a lower portion for containing a melt and an upper portion for containing slag floating on the melt. The lower portion is surrounded by an electric induction coil below the top of the lower portion and therefore the upper surface of the melt so that the melt can be inductively heated while its upper surface remains relatively quiet to provide a favorable condition for treatment of the melt by the slag. The crucible's upper portion containing the slag has an inside that is electrically conductive and an arcing electrode is positioned above the slag so that arcing power can be applied via that inside and the electrode to an electric arc formed by the electrode with the slag, for heating the slag to prevent its temperature from dropping too low to permit easy deslagging.

REFERENCES:
patent: 3759311 (1973-09-01), Jackson

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