Process for melting down and degassing lumpy material

Details Process for melting down and degassing lumpy material Process for melting down and degassing lumpy material

1986-08-15

1988-09-20

Envall, Jr., Roy N.

Industrial electric heating furnaces

Induction furnace device

With internal atmosphere control

F27D 700

Patent

active

047730790

ABSTRACT:
Process for melting down and degassing lumpy material by means of inductive heating and under subatmospheric pressure in a melting crucible. For the purpose of shortening the duration of the process, scavenging gas and/or reaction gas is introduced into the bottom region of the melting crucible during at least 50% of the duration of the process until the material is melted down completely.

REFERENCES:
patent: 1031257 (1912-07-01), Greene
patent: 3004092 (1961-10-01), Thelemarck
patent: 3443806 (1969-05-01), Galey et al.
patent: 3618917 (1971-11-01), Fredrikson et al.

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