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1. WO2013151107 - HIGH ZIRCONIA FUSED CAST REFRACTORY

Publication Number WO/2013/151107
Publication Date 10.10.2013
International Application No. PCT/JP2013/060251
International Filing Date 03.04.2013
IPC
C04B 35/657 2006.01
CCHEMISTRY; METALLURGY
04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
BLIME; MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
35Shaped ceramic products characterised by their composition; Ceramic compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
622Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
653Processes involving a melting step
657for manufacturing refractories
C04B 35/48 2006.01
CCHEMISTRY; METALLURGY
04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
BLIME; MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
35Shaped ceramic products characterised by their composition; Ceramic compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
01based on oxides
48based on zirconium or hafnium oxides or zirconates or hafnates
CPC
C04B 2235/3201
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04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE
2235Aspects relating to ceramic starting mixtures or sintered ceramic products
02Composition of constituents of the starting material or of secondary phases of the final product
30Constituents and secondary phases not being of a fibrous nature
32Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
3201Alkali metal oxides or oxide-forming salts thereof
C04B 2235/3203
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2235Aspects relating to ceramic starting mixtures or sintered ceramic products
02Composition of constituents of the starting material or of secondary phases of the final product
30Constituents and secondary phases not being of a fibrous nature
32Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
3201Alkali metal oxides or oxide-forming salts thereof
3203Lithium oxide or oxide-forming salts thereof
C04B 2235/3217
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2235Aspects relating to ceramic starting mixtures or sintered ceramic products
02Composition of constituents of the starting material or of secondary phases of the final product
30Constituents and secondary phases not being of a fibrous nature
32Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
3217Aluminum oxide or oxide forming salts thereof, e.g. bauxite, alpha-alumina
C04B 2235/3248
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2235Aspects relating to ceramic starting mixtures or sintered ceramic products
02Composition of constituents of the starting material or of secondary phases of the final product
30Constituents and secondary phases not being of a fibrous nature
32Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
3231Refractory metal oxides, their mixed metal oxides, or oxide-forming salts thereof
3244Zirconium oxides, zirconates, hafnium oxides, hafnates, or oxide-forming salts thereof
3248Zirconates or hafnates, e.g. zircon
C04B 2235/3409
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2235Aspects relating to ceramic starting mixtures or sintered ceramic products
02Composition of constituents of the starting material or of secondary phases of the final product
30Constituents and secondary phases not being of a fibrous nature
34Non-metal oxides, non-metal mixed oxides, or salts thereof that form the non-metal oxides upon heating, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
3409Boron oxide, borates, boric acids, or oxide forming salts thereof, e.g. borax
C04B 2235/3418
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2235Aspects relating to ceramic starting mixtures or sintered ceramic products
02Composition of constituents of the starting material or of secondary phases of the final product
30Constituents and secondary phases not being of a fibrous nature
34Non-metal oxides, non-metal mixed oxides, or salts thereof that form the non-metal oxides upon heating, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
3418Silicon oxide, silicic acids, or oxide forming salts thereof, e.g. silica sol, fused silica, silica fume, cristobalite, quartz or flint
Applicants
  • 旭硝子株式会社 ASAHI GLASS COMPANY, LIMITED [JP]/[JP]
  • AGCセラミックス株式会社 AGC CERAMICS CO., LTD. [JP]/[JP]
Inventors
  • 戸村 信雄 TOMURA, Nobuo
  • 牛丸 之浩 USHIMARU, Yukihiro
  • 林 晋也 HAYASHI, Shinya
Agents
  • 泉名 謙治 SENMYO, Kenji
Priority Data
2012-08730906.04.2012JP
Publication Language Japanese (JA)
Filing Language Japanese (JA)
Designated States
Title
(EN) HIGH ZIRCONIA FUSED CAST REFRACTORY
(FR) PRODUIT RÉFRACTAIRE ÉLECTROFONDU À HAUTE TENEUR EN ZIRCONE
(JA) 高ジルコニア質電鋳耐火物
Abstract
(EN)
Provided is a high zirconia fused cast refractory that is highly durable and is not prone to cracking during refractory manufacturing, when heating increases, when temperature varies during use, or when heating decreases during an operational pause. The high zirconia fused cast refractory is characterized by containing, as a chemical composition, 87 to 96 mass% of ZrO2, 2.5 to 9.0 mass% of SiO2, more than 1.5 mass% but not more than 2.5 mass% of Al2O3, 0.15 to 0.6 mass% of Na2O, 0.3 to 1.3 mass% of K2O, and approximately 0 to 0.3 mass% of Li2O.
(FR)
L'invention fournit un produit réfractaire électrofondu à haute teneur en zircone présentant une haute durabilité, et dans lequel des fissures sont peu susceptibles de se produire, lors d'une baisse de température soit pendant la fabrication du produit réfractaire, soit pendant l'élévation de la température soit pendant un changement de température lors de sa mise en œuvre ou une mise à l'arrêt. Plus précisément, l'invention concerne un produit réfractaire électrofondu à haute teneur en zircone qui est caractéristique en ce qu'il comprend en tant que composition chimique 87 à 96% en masse de ZrO2, 2,5 à 9,0% en masse de SiO2, plus de 1,5% en masse à 2,5% en masse au maximum de Al2O3, 0,15 à 0,6% en masse de Na2O, 0,3 à 1,3% en masse de K2O, et 0 à 0,3% en masse en pourcentage externe de Li2O.
(JA)
 耐火物製造時、熱上げ時、使用中の温度変化や稼働休止時の熱下げのいずれにおいても亀裂を発生し難く、高い耐久性を有する高ジルコニア質電鋳耐火物を提供する。 化学組成として、ZrO2 が87~96質量%、SiO2 が2.5~9.0質量%、Al23 が1.5質量%超、2.5質量%以下、Na2 Oが0.15~0.6質量%、K2 Oが0.3~1.3質量%、LiOが外掛けで0~0.3質量%、で含有することを特徴とする高ジルコニア質電鋳耐火物。
Also published as
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