Method and apparatus for preheating scrap

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

F - Mech Eng,Light,Heat,Weapons

27

D

39/10

F27D 3/00 (2006.01) F27D 13/00 (2006.01)

Patent

CA 1081455

METHOD AND APPARATUS FOR PREHEATING SCRAP ABSTRACT OF DISCLOSURE A metal batch preheating method comprises positioning an elongate mass of metal scrap on a conveyor in a tunnel furnace for heat- ing 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" move- ments in the furnace during the batch heating cycle so that the metal is exposed to both greater intensity and lesser intensity heat zones as is preheated after which the metal is discharged for use or further process- ing.

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