Specialized metallurgical processes – compositions for use therei – Processes – Electrothermic processes
Patent
1983-03-04
1984-02-21
Andrews, Melvin J.
Specialized metallurgical processes, compositions for use therei
Processes
Electrothermic processes
75 68R, 266141, 266178, 266200, 266901, 432209, C21C 2100, F27B 326
Patent
active
044327919
ABSTRACT:
Disclosed are a method and apparatus for clean, low loss melting of aluminum using heat transfer by convection and radiation in separate stages. Heat input to a melter stage is provided by silicon carbide tubes into which gas-fueled burners fire so that the tubes radiate heat to a molten aluminum bath. Combustion products exiting the silicon carbide tubes pass through recuperators, preheating burner combustion air. The combustion products then are piped to a preheater stage and formed into jets of hot gases. The jets are directed into convective contact with solid aluminum stock as the stock is transported along a conveyor, preheating the stock to a temperature of about 1,000.degree. F. The solid stock then is fed to the charge zone of the melter stage and melted by contact with the molten bath.
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patent: 4218211 (1980-08-01), Caplan
patent: 4353532 (1982-10-01), Jay
Jayaraman Viswanath
Shah Mahendra R.
Andrews Melvin J.
Holcroft & Company
Messenger Herbert E.
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