| US 7,462,218 B2 | ||
| Aluminum melting method using analysis of fumes coming from the furnace | ||
| Jean Ducrocq, Bazoche-sur-Guyonne (France) | ||
| Assigned to L'Air Liquide, Societe Anonyme a Directoire et Conseil de Surveillance pour l'Etude et l'Exploitation des Procedes Georges Claude, Paris (France) | ||
| Appl. No. 10/497,454 PCT Filed Nov. 07, 2002, PCT No. PCT/FR02/03819 § 371(c)(1), (2), (4) Date Dec. 27, 2004, PCT Pub. No. WO03/056044, PCT Pub. Date Jul. 10, 2003. |
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| Claims priority of application No. 01 15445 (FR), filed on Nov. 29, 2001. | ||
| Prior Publication US 2005/0103159 A1, May 19, 2005 | ||
| Int. Cl. C22B 21/00 (2006.01) | ||
| U.S. Cl. 75—385 [75/678] | 17 Claims |
| 1. 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.
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