Aluminum melting with reduced dross formation

Details Aluminum melting with reduced dross formation Aluminum melting with reduced dross formation

1995-06-13

1996-10-08

Hoang, Tu

Industrial electric heating furnaces

Plasma furnace device

Direct furnace

373 8, 373 80, 75672, H05B 700

Patent

active

055639038

ABSTRACT:
An aluminum melting method wherein an atmosphere above the aluminum charge is comprised of two strata, a lower strata covering the aluminum charge comprised of a non-oxidizing gas and an upper strata comprised of combustion gases from one or more burners. Heat from the burner or burners radiatively heats and melts the aluminum while the lower strata protects the aluminum from oxidative effects which would result if the aluminum surface were contacted with the combustion gases, thus serving to reduce dross formation.

REFERENCES:
patent: 3809378 (1974-05-01), Iida
patent: 4327901 (1982-05-01), Kaiser
patent: 4657586 (1987-04-01), Masterson et al.
patent: 4699654 (1987-10-01), Maddever et al.
patent: 4796277 (1989-01-01), Maddever et al.
patent: 4957050 (1990-09-01), Ho
patent: 5076779 (1991-12-01), Kobayashi
patent: 5176086 (1993-01-01), Clark et al.
patent: 5421856 (1995-06-01), Lazcano-Navarro

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