Carbonaceous refractory shaped body with improved oxidation...

C - Chemistry – Metallurgy – 04 – B

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C04B 35/043 (2006.01) C04B 35/66 (2006.01)

Patent

CA 2388675

The invention relates to a batch, in particular for the production of a refractory shaped body, comprising at least one refractory metal oxide component and a synthetic resin component as binder, and a graphitizing auxiliary for producing crystalline graphite carbon from the resin, the graphitizing auxiliary originating from the group consisting of the reducible organic compounds of the transition elements and/or the group of the active organic or inorganic metal compounds or metals, such as resin-soluble metal salts, chemically precipitated or micronized metal oxides or metals, the graphitizing auxiliary being available in molecular form over the time and/or temperature range of conversion of the synthetic resin into carbon (carbonization).

L'invention concerne une composition destinée en particulier à la fabrication d'un corps moulé réfractaire, composée d'au moins un composant d'oxyde de métal réfractaire, d'un composant de résine de synthèse en tant que liant, et d'un agent de graphitisation destiné à produire du carbone graphite cristallin à partir de la résine, l'agent de graphitisation provenant du groupe des composés organiques réductibles des éléments de transition et/ou du groupe des composés métalliques actifs organiques ou inorganiques, et ou des métaux tels que les sels de métaux solubles dans la résine, et les oxydes de métaux ou les métaux précipités chimiquement ou micronisés, et l'agent de graphitisation étant disponible sous forme moléculaire durant l'intervalle temporel ou thermique de la transformation de la résine synthétique en carbone (cokéfaction).

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