Controlled atmosphere melting of molten slag charge

Details Controlled atmosphere melting of molten slag charge Controlled atmosphere melting of molten slag charge

1981-12-07

1984-02-21

Envall, Jr., Roy N.

Industrial electric heating furnaces

Arc furnace device

Charging or discharging

373 33, F27D 314

Patent

active

044334214

ABSTRACT:
Molten slag is fed from a receptacle to an atmosphere-controlled carbon-lined electric furnace through a refractory-lined siphon tube without allowing atmospheric gases to enter the furnace. Siphoning is initiated by reducing the atmospheric pressure within the furnace through the use of an auxiliary vacuum tank. Slag from the furnace is spun to form mineral wool insulation.

REFERENCES:
patent: 2253421 (1941-08-01), de Mare
patent: 3905804 (1973-06-01), Scott, Jr.

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