Although the total replacement of microsilica by kaolin or metakaolin degrades the high-temperature behaviour of high-alumina castables, a partial substitution can be attractive when microsilica is expensive, because this substitution can significantly decrease the refractory cost yet maintain an acceptable mechanical strength.
Origin
Universidade Sao Carlos, Brazil
Journal Title
Am Ceram Soc Bull 81 9 2002 40-47
Sector
Refractories
Class
R 453