Lance for treating molten metal

Details Lance for treating molten metal Lance for treating molten metal

C - Chemistry, Metallurgy

21

C

39/105

C21C 5/48 (2006.01)

Patent

CA 1311918

ABSTRACT OF THE DISCLOSURE A lance for use in treating a bath of molten metal comprises an elongated tubular refractory body. A metal tube is positioned axially in the refractory body, a plurality of smaller metal tubes are positioned in the metal tube, some of the plurality of smaller metal tubes are arranged in side by side relation in a spiral pattern in engagement with said metal tube in a section of said metal tube extending inwardly from one end thereof, there is an apertured partition in said metal tube, and the smaller metal tubes engage the apertures in said partition so as to communicate with a chamber on the other side of said partition. A refractory core is positioned in the metal tube mechanically locking the plurality of smaller metal tubes in the spiral pattern. A device engages the metal tube and extends outwardly of the tubular refractory body so as to support the lance and is connected with a source of gas to be directed through the lance.

582455

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