| 摘要 |
Thermal insulation is provided for use in applications requiring continuous resistance to temperatures of 1260 ~C without reaction with alumino-silicate firebricks, the insulation comprises fibres having a composition in wt% 65 %<SiO2 <86 %, MgO <10 %, 14 % < CaO < 28 %, A1203 <2 %, Zr02 <3 %, B203<5 %, P205 <5 %, 72 % <Si02+ZrO2+B203+5*P205, 95 % < Si02 + CaO + MgO + A1203 +Zr02 + B203 + P205. Addition of elements selected from the group Sc, La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, Y or mixtures thereof improves fibre quality and the strength of blankets made from the fibres.
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