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US 12,715,817 B2Granted
High-zirconia electro-fused cast refractory material
AssigneeSaint-Gobain TM K.K.
InventorsHiroshi Sugiyama, Yasuo Misu, Itaru Hashimoto
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AssigneeSaint-Gobain TM K.K.
InventorsHiroshi Sugiyama, Yasuo Misu, Itaru Hashimoto
Estimating the term…
A high zirconia electrically-fused cast refractory has a chemical composition including more than 95% by mass and 98% by mass or less of ZrO2, 0.1 to 1.5% by mass of Al2O3, 1 to 2.5% by mass of SiO2, 0 to 0.1% by mass of K2O, 0.01 to 0.3% by mass of Na2O and K2O in total, 0.02 to 0.4% by mass of B2O3, 0.01 to 0.6% by mass of BaO, 0.01 to 0.4% by mass of SnO2, 0.3% by mass or less of Fe2O3 and TiO2 in total, and 0.04% by mass or less of P2O5, wherein the contents of B2O3 and SnO2 satisfy the following Formulas (1) and (2): 0.2 ≤ ( Sn O 2 / B 2 O 3 ) < 6.5 ( 1 ) 0.14 % by mass ≤ ( C SnO 2 + C B 2 O 3 / 2 ) ≤ 0.55 % by mass . ( 2 ) In Formula (2), CSnO2 represents the content of SnO2, and CB2O3 represents the content of B2O3, expressed in % by mass in the refractory.
A high zirconia electrically-fused cast refractory, comprising, as a chemical composition, more than 95% by mass and 98% by mass or less of ZrO2,
A high zirconia electrically-fused cast refractory, comprising, as a chemical composition,
A high zirconia electrically-fused cast refractory, comprising, as a chemical composition,
Dependencies are inferred from the claim text.