Melted product with a high zirconium content
AssigneeSaint-Gobain Centre de Recherches et d'Etudes European
InventorsIsabelle Cabodi, Michel Marc Gaubil, Christel Morand
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Abstract
A fused-cast refractory product including, as mass percentages on the basis of the oxides and for a total of 100% of the oxides: ZrO2+HfO2: remainder to 100%, with HfO2≤5%; SiO2: 1.5% to 7.5%; Al2O3: 1.0% to 3.0%; CaO+SrO: 1.2% to 3.0%; Y2O3: 1.5% to 3.0%; Na2O+K2O: <0.15%; B2O3: <1.0%; P2O5: <0.15%; Fe2O3+TiO2: <0.55%; oxide species other than ZrO2, HfO2, SiO2, Al2O3, Na2O, K2O, B2O3, CaO, SrO, Y2O3, P2O5, Fe2O3 and TiO2: <1.5%.
Claims15
Fused-cast refractory product comprising, as mass percentages on the basis of the oxides and for a total of 100% of the oxides:
- ZrO2+HfO2:
- remainder to 100%, with HfO2≤5%;
- SiO2:
- 1.5% to 7.5%;
- Al2O3:
- 1.0% to 3.0%;
- CaO +SrO:
- 1.2% to 3.0%;
- Y2O3:
- 1.5% to 3.0%;
- Na2O [+] and K2O:
- <0.15%;
- B2O3:
- <1.0%;
- P2O5:
- <0.15%;
- Fe2O3+TiO2:
- <0.55%;
- oxide species other than ZrO2, HfO2, SiO2, Al2O3, Na2O, K2O, B2O3, CaO, SrO, Y2O3, P2O5, Fe2O3 and TiO2:
- <1.5%.
Product according claim in which the mass content of Al2O3 is less than or equal to 2.3%.
Dependencies are inferred from the claim text.