| 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%, AL2O3<2%, ZRO2<3%, B2O3<5%, P2O5<5%, 72%<SIO2+ZrO2+B2O3+5*P2O5, 95%<SIO2+CaO+MgO+Al2O3+ZrO2+B2O3+P2O5. 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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