Improved device for blowing a gas into a molten metal

F - Mech Eng,Light,Heat,Weapons – 27 – D

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F27D 3/16 (2006.01) B22D 1/00 (2006.01) C21C 5/48 (2006.01)

Patent

CA 2227725

A device for blowing a gas into a molten metal contained in a reactor or ladle as used in the steel industry includes a refractory material body and mainpassages passing through the refractory body from its lower face to be connectedto a gas supply to its upper face to be in contact with the bath of metal and a metal casing around the body except for the upper face. The device further includes atleast one blind auxiliary passage the upper end of which is at a lower level than the upper surface of the body and the lower end of which opens onto the lower face.

Un dispositif pour souffler un gaz dans un métal en fusion contenu dans un réacteur ou dans une poche de coulée, comme ceux utilisés dans l'industrie sidérurgique, comprenant un corps en matériau réfractaire et des passages principaux qui traversent le corps réfractaire à partir de sa face inférieure et qui peuvent être branchés à une source d'alimentation en gaz à leur face supérieure de manière à entrer en contact avec le bain de métal fondu et une enveloppe métallique autour du corps à l'exception de la face supérieure. Le dispositif comprend également au moins un passage auxiliaire aveugle dont l'extrémité supérieure est située à un niveau inférieure par rapport à a surface supérieure du corps et dont l'extrémité inférieure s'ouvre sur la face inférieure.

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