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%22O322O32O52+ZrO2+B2O3+5*P2O 5, 95%2+CaO+MgO+Al2O3+ZrO2+B2 O3+P2O5. A
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%22O322O32O52+ZrO2+B2O3+5*P2O 5, 95%2+CaO+MgO+Al2O3+ZrO2+B2 O3+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.
대표청구항▼
The invention claimed is: 1. Thermal insulation for use in applications requiring continuous resistance to temperatures of 1260�� C. without reaction with alumino-silicate firebricks, the insulation comprising fibres having a composition in wt % description="In-line Formulae" end="lead"72%22O322O
The invention claimed is: 1. Thermal insulation for use in applications requiring continuous resistance to temperatures of 1260�� C. without reaction with alumino-silicate firebricks, the insulation comprising fibres having a composition in wt % description="In-line Formulae" end="lead"72%22O322O32O52+ZrO2+B2O3+5*P 2O5 description="In-line Formulae" end="tail" description="In-line Formulae" end="lead"95%2+CaO+MgO+Al2O3+ZrO2 +B2O3+P2O5.description="In-line Formulae" end="tail" 2. Thermal insulation as claimed in claim 1, in which the amount of MgO present in the fibre is less than 1.75%. 3. Thermal insulation as claimed in claim 1, in which the amount of CaO is in the range of 18%2+CaO+MgO+Al2O3+ZrO2+B2 O3+P2O5. 5. Thermal insulation as claimed in claim 4, in which 98.5%2+CaO+MgO+Al2O3+ZrO2+B 2O3+P2O5. 6. Thermal insulation as claimed in claim 5, in which 99%2+CaO+MgO+Al2O3+ZrO2+B2 O3+P2O5. 7. Thermal insulation as claimed in claim 1, having the composition: description="In-line Formulae" end="lead"72%22O322+CaO+MgO+Al2O3+ZrO 2+B2O3+P2O5.description="In-line Formulae" end="tail" 8. Thermal insulation as claimed in claim 1, having the composition: description="In-line Formulae" end="lead"72%2222O32O32+CaO+MgO+Al2O3+ZrO2 +B2O3+P2O5.description="In-line Formulae" end="tail" 14. A shaped article of insulation comprising fibers as defined in claim 13, said shaped article capable of continuous resistance to temperatures of 1350�� C. without reaction with alumino-silicate firebricks. 15. Thermal insulation comprising a saline soluble, low shrinkage, high temperature resistant inorganic fibre having a use temperature up to 1350�� C., comprising the fiberization product of a batch comprising, in percent by weight based on total fiber composition: description="In-line Formulae" end="lead"72%222O32O32+CaO+MgO+Al2O3+ZrO2 +B2O3+P2O5.description="In-line Formulae" end="tail" 16. A method of producing a saline soluble, low shrinkage, high temperature resistant inorganic fibre having a use temperature up to 1350�� C., comprising the fiberization product of a batch comprising, in percent by weight based on total fiber composition: description="In-line Formulae" end="lead"72%222O32O32+CaO+MgO+Al2O3+ZrO2 +B2O3+P2O5 description="In-line Formulae" end="tail" comprising forming a batch having said composition, melting at least a portion of the batch, and forming fibers from the melt. 17. A method of insulating an article, comprising disposing on, in, near, or around the article thermal insulation comprising a saline soluble, low shrinkage, high temperature resistant inorganic fibre having a use temperature up to 1350�� C., comprising the fiberization product of a batch comprising, in percent by weight based on total fiber composition: description="In-line Formulae" end="lead"72%222O3%description="In-line Formulae" end="tail" description="In-line Formulae" end="lead"02O32CaO+MgO+Al2O3ZrO2 +B2O3+P2O5.description="In-line Formulae" end="tail" 18. The method of claim 17 in which the article comprises alumino-silicate firebricks and the thermal insulation is in contact with the alumino-silicate firebricks.
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