REFRACTORY PRODUCT WITH A HIGH ZIRCONIA CONTENT Melted and cast refractory product comprising, in percentages by weight on the basis of the oxides and for a total of 100%: - ZrO2: complement to 100% - Hf2O: 5% - SiO2: 8.1% at 12.0% - B2O3: 0.20% to 0.90% - Na2O + K2O: 0.40% to 0.80% - Al2O3: 0.3% to 2.0% - Y2O3: 2.0 % - Fe2O3 + TiO2: 0.6% - other species: 1.5%. Figure for the abstract: Fig 1.
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