Basic refractory cementitious materials and components thereof

Details Basic refractory cementitious materials and components thereof Basic refractory cementitious materials and components thereof

C - Chemistry, Metallurgy

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C04B 35/04 (2006.01) B22D 41/32 (2006.01) C04B 35/043 (2006.01) C04B 35/66 (2006.01)

Patent

CA 1170283

ABSTRACT BASIC REFRACTORY CEMENTITIOUS MATERIAL AND COMPONENTS THEREOF A cementitious formulation which is self- setting when mixed with water, and which can be cast into monolithic refractory components capable of resisting molten metal and repeated thermal shocks, has three main components: high purity magnesia (at least 94% by weight being MgO); high purity alumina (at least 98% by weight Al2O3) and high alumina cement (preferably 75% Al2O3 by weight, or greater). The magnesia may be 60 to 95% by weight of the three components and the alumina amounts to at least 1% by weight of the three components. Castings produced from the formulation can survive repeated flame testing even after exposure to firing at elevated temperatures.

401977

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