F - Mech Eng,Light,Heat,Weapons – 27 – D
Patent
F - Mech Eng,Light,Heat,Weapons
27
D
39/1
F27D 13/00 (2006.01)
Patent
CA 1087836
Abstract It is known to preheat scrap metal prior to melting. To improve the efficiency of use of scrap metal it is desirable to preheat the scrap to as high a temperature as possible with the least amount of waste heat. The present invention seeks to provide a more efficient system for preheatment of scrap by providing a scrap metal preheating system comprising: an elongate conveyor upon which the scrap to be preheated is deposited in an even bed; an elongate burner hood positioned along and above the conveyor and including a charging and discharging end thereof; a plurality of burners spaced one from another along the longitudinal axis of the burner hood; means for loading the scrap onto the conveyor in an even bed of length less than the length of the burner hood; conveyor control means for periodically advancing the bed of scrap through the burner hood : in a direction from the charging end thereof to the discharging end thereof; and burner control means for progressively operating only those burners positioned above the bed of scrap as the scrap is progressively shifted to- ward the discharge end to assure complete exposure of all scrap to direct burner flame.
332986
Dzakowic Thomas J.
Fellnor John R.
Melting Systems Inc.
Smart & Biggar
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