Specialized metallurgical processes – compositions for use therei – Processes – Electrothermic processes
Patent
1979-11-08
1980-10-21
Andrews, M. J.
Specialized metallurgical processes, compositions for use therei
Processes
Electrothermic processes
266141, 432225, F27B 1414
Patent
active
042292115
ABSTRACT:
Prior to the receipt of a charge of molten metal, a ladle is heated by a direct flame, by applying a seal to the rim of the ladle and directing air through a heat exchanger and to the ladle, mixing fuel with the air and igniting the mixture and directing the flame in to the ladle chamber, and exhausting the gases of combustion from the ladle chamber back through the heat exchanger. The seal applied to the rim of the ladle comprises a network of refractory fiber modules mounted in a common plane. Each module comprises a rectangular block formed of a web of refractory fibers in an accordion folded arrangement, and the modules are mounted with their folded edges exposed, and with the folds of each module extending at right angles with respect to the folds of the adjacent modules.
REFERENCES:
patent: 792642 (1905-06-01), Williams
patent: 2294168 (1942-08-01), Francis et al.
patent: 3970444 (1976-07-01), Brotzmann et al.
Andrews M. J.
The Cadre Corporation
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