Metallurgical apparatus – With means to preheat gas
Patent
1989-10-04
1991-01-01
Andrews, Melvyn J.
Metallurgical apparatus
With means to preheat gas
266155, 266214, 266236, 266900, 266901, F27B 322
Patent
active
049812858
ABSTRACT:
Process and apparatus for the rapid efficient melting of solid ferrous metal scrap without direct exposure to water vapor, carbon dioxide, oxygen or oxygen-containing gases, using natural gas and/or other caloric gaseous fuels. The apparatus includes a furnace having a refractory base, means for introducing ferrous metal such as solid steel scrap to the wall area, means for providing a slag layer over the solid steel scrap, and gas burner means for emitting one or more forced gas flames for superheating the slag layer to a liquid which covers the scrap and for agitating and circulating the molten slag to form a highly-efficient heat-transfer medium for melting and refining the steel scrap while it is insulated against contact with gases, particularly water vapor, carbon dioxide, oxygen or oxygen-containing gases. The process may operate continuously and can recover heat for scrap preheating, turbine power and other efficient uses.
REFERENCES:
patent: 1357781 (1920-11-01), Koppers
patent: 2760771 (1956-08-01), Knappe
patent: 3529067 (1970-09-01), Grott
patent: 3711275 (1973-01-01), Johnsson
patent: 4877449 (1989-10-01), Khinkis
Agarwal Jagdish
Gannon Richard
Goldfarb Victor
Stickler David
Woodroffe Jaime
Andrews Melvyn J.
Gas Research Institute
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