Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
HIGH-ZIRCONIA ELECTRO-FUSED CAST REFRACTORY MATERIAL
An object of the present invention is to provide a high zirconia electrically-fused cast refractory containing more than 95% by mass of ZrO2, which is less likely to be cracked at the time of production, has excellent corrosion resistance against molten glass, can suppress the formation of zircon crystals when heated alone or heated in contact with molten glass, and is easily mass-produced industrially; the present invention relates to 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, 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): 0.20 ≤ (SnO2/B2O3) <6.5 (1) 0.14 % by mass ≤ (CSnO2+CB2O3/2) ≤ 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.).
HIGH-ZIRCONIA ELECTRO-FUSED CAST REFRACTORY MATERIAL
An object of the present invention is to provide a high zirconia electrically-fused cast refractory containing more than 95% by mass of ZrO2, which is less likely to be cracked at the time of production, has excellent corrosion resistance against molten glass, can suppress the formation of zircon crystals when heated alone or heated in contact with molten glass, and is easily mass-produced industrially; the present invention relates to 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, 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): 0.20 ≤ (SnO2/B2O3) <6.5 (1) 0.14 % by mass ≤ (CSnO2+CB2O3/2) ≤ 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.).
HIGH-ZIRCONIA ELECTRO-FUSED CAST REFRACTORY MATERIAL
ELEKTROGESCHMOLZENES FEUERFESTES GUSSMATERIAL MIT HOHEM ZIRKONIAGEHALT
MATÉRIAU RÉFRACTAIRE COULÉ ÉLECTROFONDU À HAUTE TENEUR EN ZIRCONE
SUGIYAMA HIROSHI (Autor:in) / MISU YASUO (Autor:in) / HASHIMOTO ITARU (Autor:in)
06.11.2024
Patent
Elektronische Ressource
Englisch