Well brick of vessel for molten metal

B - Operations – Transporting – 22 – D

Patent

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Details

B22D 41/00 (2006.01) B22D 41/54 (2006.01) C04B 35/103 (2006.01) C04B 35/66 (2006.01)

Patent

CA 2200666

The present invention relates to a well brick or a tuyere brick for receiving a nozzle brick or a porous brick for injecting gas which is disposed on the bottom of a vessel for molten metal. A well brick disposed on a bottom of a vessel for molten metal, which comprises a product formed into a shape of a cylinder or a frustum of cone by using an isostatic press. Said well brick is made by mixing a raw material comprising aggregate of Al2O3 as a main element, 0.3 to 10.0 weight % carbon material, 0.2 to 0.5 weight % metal or metallic powder of at least one element selected from the group consisting of Al, Mg, Ca and Si, and 0.1 to 30 weight % Mg, and thermosetting resin as a binding material and by forming them.

Cette invention concerne une brique puits ou une brique tuyère destinée à recevoir une brique busette réfractaire ou une brique poreuse permettant l'injection de gaz, placée au fond d'une cuve de métal fondu. Cette brique puits, qu'on place au fond d'une cuve de métal fondu, comporte un produit auquel on a donné la forme d'un cylindre ou d'un tronc de cône en utilisant une presse isostatique. Pour créer cette brique puits, on mélange de la matière première constituée de granulat de Al2O3 comme élément principal et, comme autres éléments, de 0,3 à 10,0 pour cent en masse de matière carbonée, de 0,2 à 0,5 pour cent en poids de métal ou de poudre métallique composée d'au moins l'un des éléments du groupe Al, Mg, Ca et Si, et de 0,1 à 30 pour cent en poids de Mg, avec de la résine thermodurcissable comme matériau liant; puis on lui donne sa forme.

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