Saline soluble inorganic fibres

Details Saline soluble inorganic fibres Saline soluble inorganic fibres

2003-01-02

2008-12-30

Group, Karl E (Department: 1793)

Compositions: ceramic

Ceramic compositions

Glass compositions, compositions containing glass other than...

C501S035000, C501S067000, C501S070000

Reexamination Certificate

active

07470641

ABSTRACT:
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 fibers 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 fiber quality and the strength of blankets made from the fibers.

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