Method and apparatus for preheating scrap

Details Method and apparatus for preheating scrap Method and apparatus for preheating scrap

1976-10-29

1979-01-23

Lake, Roy

Metallurgical apparatus

Process

75 44S, 266901, 432 11, 432134, F27D 300

Patent

active

041357027

ABSTRACT:
A metal batch preheating method comprises positioning an elongate mass of metal scrap on a conveyor in a tunnel furnace for heating such furnace having longitudinally spaced transversely extending zones of greater and lesser heat, the conveyor being loaded with metal for the length of the tunnel furnace except for the last heat zones therein. The metal is thereafter moved through a plurality of "advance and heat" movements in the furnace during the batch heating cycle so that the metal is exposed to both greater intensity and lesser intensity heat zones as it is preheated after which the metal is discharged for use or further processing.

REFERENCES:
patent: 3133628 (1964-05-01), Butler et al.
patent: 3484231 (1969-12-01), Uzdavines
patent: 3591158 (1971-07-01), Pantke
patent: 3667747 (1972-06-01), Graybill et al.
patent: 3721519 (1973-03-01), Venetta
patent: 3813209 (1974-05-01), Venetta
patent: 3985497 (1976-10-01), Fellnor et al.
Jablonski, E., Flying Fortress, Doubleday Garden City-New York, 1965, p. 317.

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