Rotary lance

C - Chemistry – Metallurgy – 21 – C

Patent

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Details

C21C 7/00 (2006.01) C22B 9/00 (2006.01)

Patent

CA 2698492

A process and apparatus for feeding an additive to a molten metal in a vessel to achieve a uniform dispersion of the additive are provided. In one example, the outlet of the lance is positioned below the surface of the molten metal. The lance is moved with a reciprocating motion, so that the outlet of the lance moves below the surface of the molten metal. The additive is dispensed through the outlet of the lance along a path traversed by the outlet in the molten metal while the lance reciprocates.

L'invention concerne un procédé et un appareil pour ajouter un additif à un métal en fusion dans un récipient afin d'obtenir une dispersion uniforme de l'additif. Dans un exemple, l'orifice de sortie de la lance est positionné en dessous de la surface du métal en fusion. La lance est déplacée avec un mouvement de va-et-vient, de sorte que l'orifice de sortie de la lance se déplace en dessous de la surface du métal en fusion. L'additif est dispersé par l'orifice de sortie de la lance le long d'un canal traversé par l'orifice de sortie dans le métal en fusion, lorsque la lance effectue un mouvement de va-et-vient.

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