C - Chemistry – Metallurgy – 22 – B
Patent
C - Chemistry, Metallurgy
22
B
C22B 9/05 (2006.01) F27D 27/00 (2010.01) C22B 21/06 (2006.01)
Patent
CA 2251230
A rotary gas dispersion device for use in a liquid aluminium treatment vessel is disclosed. The device is useful for reducing surface disturbance, splashing and vortices while maintaining the effectiveness of the treatment. Said device includes a rotor (1) consisting of a set of blades (5) and a substantially flat disc (4) thereabove. Gas is injected through the central hub and side ports (10) between the blades. The ratio of the outer diameter of the rotor to the diameter of the central hub thereof is of 1.5-4.
L'invention concerne un dispositif rotatif de dispersion de gaz dans une cuve de traitement de l'aluminium liquide. Le dispositif permet de réduire agitation de surface, projections et vortex tout en maintenant l'efficacité du traitement. Le dispositif comporte un rotor (1) constitué d'un ensemble de pales (5) surmontées d'un disque (4) sensiblement plat. L'injection de gaz est effectuée à travers le moyeu central et des orifices latéraux (10) situés entre les pales. Le ratio entre le diamètre extérieur du rotor et le diamètre de son moyeu central est compris entre 1,5 et 4.
Bertrand Joel
Le Brun Pierre
Xuereb Catherine
Aluminium Pechiney
Novelis Inc.
Pechiney Rhenalu
Robic
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