Aluminum resistant refractory composition and method

Details Aluminum resistant refractory composition and method Aluminum resistant refractory composition and method

C - Chemistry, Metallurgy

04

B

C04B 35/66 (2006.01)

Patent

CA 2683346

A refractory composition for use in contact with molten aluminum and molten aluminum alloys containing a refractory aggregate, a binder, and a treatment additive comprising a source of Sr. Methods comprising contacting a refractory composition with the Sr source to improve the resistance of the refractory to molten aluminum attack are also disclosed. Preferred treatment agents comprise Sr nitrate, Sr carbonate, Sr sulfate and Sr oxide.

La présente invention concerne une composition réfractaire destinée à être utilisée en contact avec de l'aluminium fondu et des alliages d'aluminium fondus contenant un agrégat réfractaire, un liant et un additif de traitement comprenant une source de Sr. La présente invention concerne également des procédés comprenant l'étape consistant à mettre en contact une composition réfractaire avec la source de Sr pour améliorer la résistance du réfractaire aux attaques de l'aluminium fondu. Les agents de traitement préférés comprennent le nitrate de Sr, le carbonate de Sr, le sulfate de Sr et l'oxyde de Sr.

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