C - Chemistry – Metallurgy – 22 – B
Patent
C - Chemistry, Metallurgy
22
B
C22B 21/06 (2006.01) B22D 1/00 (2006.01) B22D 41/42 (2006.01) C22B 9/05 (2006.01)
Patent
CA 2495766
The invention relates to a device (8) which is used to inject a treatment gas into a molten metal contained in a tank (1) and which is designed to be fixed in one of the walls of said tank. The inventive device comprises at least one injection nozzle (18) which is equipped with an end hole (19). Said device is characterised in that it comprises a mobile means (14) which can be manoeuvred from outside of the injection device and which is used to unblock the aforementioned end hole of the nozzle.
La présente invention se rapporte à un dispositif d'injection (8) d'un gaz de traitement dans un métal liquide contenu dans une cuve (1), ledit dispositif étant destiné à être fixé dans une des parois de la cuve et comportant au moins une buse (18) d'injection munie d'un orifice d'extrémité (19), caractérisé en ce qu'il comprend un moyen mobile (14) manoeuvrable depuis l'extérieur du dispositif d'injection et apte à désobstruer ledit orifice d'extrémité de la buse.
Coudry Daniel
Paret Robert
Norton Rose Canada S.e.n.c.r.l.,s.r.l./llp
Novelis Inc.
Pechiney Rhenalu
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