A top injection lance

Details A top injection lance A top injection lance

C - Chemistry, Metallurgy

21

C

C21C 5/35 (2006.01) C21C 5/46 (2006.01) F27D 3/16 (2006.01) F27D 3/18 (2006.01) F27D 9/00 (2006.01)

Patent

CA 2260181

A lance (5) for injecting a feed material, preferably a solid feed material, into a metallurgical vessel, is disclosed. The lance comprises: an inlet (21) for introducing the feed material into the lance; an outlet (23) at a forward end of the lance (5) for discharging the feed material from the lance (5); a hollow elongate member (25) that defines a passageway (33) for the feed material between the inlet (21) and the outlet (23) and is adapted to be cooled by a first cooling fluid; and an outer jacket (35) positioned around a section of the length of the member (25) and is adapted to be cooled by a second cooling fluid.

Lance (5) permettant d'injecter un matériau, de préférence un matériau d'alimentation solide, dans un récipient d'industrie métallurgique. Ladite lance comporte les éléments suivants : une admission (21) pour l'introduction du matériau de chargement dans la lance, une décharge (23) à l'extrémité avant de la lance (5), un élément allongé creux (25) définissant un conduit (33) pour le matériau d'alimentation entre l'admission (21) et la décharge (23), lequel conduit comporte un dispositif de refroidissement au moyen d'un premier liquide réfrigérant et une chemise (35) ménagée autour d'une certaine longueur de l'élément allongé (25) et qui est conçue pour être refroidie par un second liquide réfrigérant.

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