| 摘要 |
PURPOSE:To provide a ceramic fiber-containing insulating castable which is improved in the reduction of heat resistance in the elevated temperature zone and in reduced corrosion resistance as defects of conventional insulating castable and the difficulty in application which is one of defects of conventional ceramic fibers. CONSTITUTION:This castable is prepared by using 35 to 45wt.% of refractory aggregates of alumina and/or mullite 40 to 60wt.% of hydraulic alumina (rho-Al2O3) for increasing strength, 0.05-0.50wt.% of a foaming agent for increasing light weight and thermal insulation properties, 1 to 5wt.% of ceramic fibers for uniform distribution of foams in the cast body and 3 to 7wt.% of microsilica. |
