Atmosphere controlled electric melting

Details Atmosphere controlled electric melting Atmosphere controlled electric melting

C - Chemistry, Metallurgy

03

B

307/1

C03B 5/02 (2006.01) C03B 3/00 (2006.01) C03B 5/027 (2006.01) C03B 5/033 (2006.01) C03B 5/06 (2006.01) C03B 5/43 (2006.01) C03B 37/085 (2006.01) C03B 37/09 (2006.01) C22B 9/18 (2006.01) F27B 3/08 (2006.01) F27B 3/14 (2006.01) F27D 7/06 (2006.01)

Patent

CA 1174261

ABSTRACT OF THE DISCLOSURE A substantially spherically-shaped electric melting furnace includes a carbon-lined crucible. The interior of said crucible is sealed from the atmosphere outside the crucible and a vacuum pump and venturi device control the atmosphere within the crucible by removing oxygen therefrom. A feeder lock allows material to be fed into the crucible without interfering with the atmospheric control of the crucible and a tap hole adjacent the lower portion of the crucible allows molten material to be removed. When used in the manufacture of mineral wool insulation, slag is fed into the crucible to be melted and the molten slag from the tap hole is delivered to a fiberizing device.

370206

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