Method for the salt-free, non-oxidizing remelting of aluminium
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United States of America Patent
Stats
-
Jan 9, 2007
Grant Date -
Jan 22, 2004
app pub date -
Aug 20, 2001
filing date -
Sep 8, 2000
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Process and device for saltless, oxidation-free remelting of aluminum, its alloys and of aluminum scrap with miscellaneous impurities, such as combustible oily substances, adherent combustible or noncombustible materials and those with a higher specific weight in a rotating drum (1) with a combustion chamber (4), two supply valves (5, 6) and one burner nozzle (32), in the conventional manner the fuel being natural gas or heating oil, and the oxygen being supplied with air via the supply valve (6) to the combustion chamber (4), using an electronic control an amount of air being metered such that the amount of oxygen supplied with the air corresponds exactly to the stoichiometric ratio for complete combustion of the fuel supplied by the burner nozzle (32).
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