C - Chemistry – Metallurgy – 22 – B
Patent
C - Chemistry, Metallurgy
22
B
C22B 9/00 (2006.01) B22D 37/00 (2006.01) C21C 5/46 (2006.01) F27B 3/19 (2006.01) F27D 3/15 (2006.01) F27D 3/16 (2006.01)
Patent
CA 2410799
The invention relates to a device for preventing slag from flowing along when tapping a molten metal out of a metallurgical vessel, whereby the tap opening of the vessel is formed out of interchangeable pipes, which are located one above the other, made of wear-resistant refractory material, and enclosed by tap framing blocks, whereby the lower end of the tap interchangeable system, which is constructed as described, is formed by a cup block against which a slide that closes the opening rests. According to the invention, axially extending channels that are open at both ends of the pipe are provided in the pipe wall of at least the interchangeable pipe that leads into the interior of the vessel. Said channels are connected to a gas supply at the pipe end facing away from the interior of the vessel.
L'invention concerne un dispositif destiné à éviter que des scories ne soient entraînées lors de la percée d'un métal en fusion hors d'une cuve métallurgique. L'ouverture de la percée de la cuve est formée de tubes interchangeables en matériau réfractaire, résistant à l'usure, empilés les uns sur les autres, qui sont entourés de pierres d'encadrement de percée. L'extrémité inférieure du système interchangeable de percée ainsi obtenu est formée d'une pierre cupuliforme sur laquelle s'appuie un coulisseau fermant l'ouverture. Selon l'invention, il est prévu, dans la paroi tubulaire d'au moins un tube interchangeable débouchant dans l'espace intérieur de la cuve, des canaux s'étendant dans le sens axial et débouchant sur les faces d'about du tube interchangeable. Lesdits canaux sont reliés à une alimentation en gaz sur la face d'about tubulaire opposée à l'espace intérieure de la cuve.
Siek Horst
Fetherstonhaugh & Co.
Georgsmarienhuette Gmbh
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