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US 7,462,218 B2Granted
Aluminum melting method using analysis of fumes coming from the furnace
AssigneeL'Air Liquide, Societe Anonyme a Directoire et Conseil de Surveillance pour l'Etude et l'Exploitation des Procedes Georges Claude
InventorJean Ducrocq
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Abstract
A process and a device for melting aluminum where solid aluminum is melted in a furnace to form aluminum melt pool. The temperature and carbon monoxide (CO) concentration of the flue gas generated in the melting process is detected and examined for variations. Using this variation information, it is determined if aluminum oxides have formed on the surface of the aluminum melt pool and if they have, the melting process is regulated accordingly.
Claims17
A method of melting aluminum comprising:
- a) introducing a aluminum charge into a furnace with at least one burner;
- b) melting said aluminum to form an aluminum melt pool;
- c) detecting the variations in the carbon monoxide (CO) concentration and the temperature in the flue gases;
- d) deducing the formation of aluminum oxides on the surface of said aluminum melt pool from said variations in carbon monoxide (CO) concentration and flue gas temperature;
- and
- e) regulating said melting process depending on said formation of said aluminum oxides.
3 more elements
Dependencies are inferred from the claim text.