Protective atmosphere heating

Details Protective atmosphere heating Protective atmosphere heating

F - Mech Eng,Light,Heat,Weapons

27

D

F27D 7/06 (2006.01) A63B 47/02 (2006.01) E02B 15/04 (2006.01) E04H 4/10 (2006.01) F27B 5/04 (2006.01)

Patent

CA 2263261

A method for heating and/or melting a charge such as aluminum in a furnace using heat generated by combustion to radiatively heat the charge through a layer of protective gas wherein combustion reaction products generated by the combustion are exhausted from a lower level within the furnace, and, during melting, the protective gas layer has a higher upper boundary than during a subsequent heating period, enabling reduced NO x generation, lower fuel and oxygen consumption and reduced refractory corrosion by avoiding furnace gas flow through the high temperature upper furnace region.

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