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US 2024/0190773 A1Published application
Refractory product having a high content of zirconia
OwnerIsabelle CABODI, Pierrick VESPAinventors
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Abstract
Cast molten refractory product comprising, in percentages by weight based on the oxides and for a total of 100%: ZrO2: complement to 100% HfO2: <5% SiO2: 8.0% to 11.0% Al2O3: 4.0% to 6.5% Na2O + K2O + B2O3: 0.40% to 1.30% B2O3: <0.60% Y2O3: <1.0% Fe2O3 + TiO2: <0.60% other species: <1.0% with a ratio SiO2/(Na2O+K2O+B2O3) less than or equal to 19.0, the SiO2 content being greater than or equal to 8.5% if the Al2O3 content is greater than or equal to 5.1%.
Claims16
A cast molten refractory product comprising, in percentages by weight based on the oxides and for a total of 100%:
- ZrO2:
- complement to 100%
- HfO2:
- <5%
- SiO2:
- 8.0% to 11.0%
- Al2O3:
- 4.0% to 6.5%
- Na2O + K2O + B2O3:
- 0.40% to 1.30%
- B2O3:
- <0.60%
- Y2O3:
- <1.0%
- Fe2O3 + TiO2:
- <0.60%
- other species:
- <1.0%
- with a ratio SiO2/(Na2O+K2O+B2O3) less than or equal to 19.0,
- the SiO2 content being greater than or equal to 8.5% if the Al2O3 content is greater than or equal to 5.1%.
17 more elements
Dependencies are inferred from the claim text.