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HIGH ZIRCONIA ELECTROCAST REFRACTORY MATERIAL AND PRODUCTION METHOD THEREOF
To provide a high zirconia electrocast refractory material which has crack formation on production and crack formation when used as a refractory lining being reduced more while maintaining extremely high corrosion resistance to a molten glass.SOLUTION: The high zirconia electrocast refractory material contains, as a chemical composition, on oxide basis, 96.7-98.5 mass% of ZrO, 0.8-2.7 mass% of SiO, 0-0.2 mass% of NaO, 0.21-1 mass% of KO, and 0.1-0.4 mass% of AlO, substantially does not contain BO, wherein contents of the NaO and the KO are represented by the following formula (1): 0.15 mass %≤C/2+C≤0.6 mass% (1) (in the formula, Cis the content of KO, and Cis the content of NaO; these contents represent mass% in the refractory material).SELECTED DRAWING: Figure 1A
【課題】溶融ガラスに対する極めて高い耐食性を保持しながら、製造時の亀裂の発生や炉材としての使用時における亀裂の発生がより低減された高ジルコニア質電鋳耐火物の提供。【解決手段】化学成分として、酸化物基準で、ＺｒＯ２を９６．７〜９８．５質量％、ＳｉＯ２を０．８〜２．７質量％、Ｎａ２Ｏを０〜０．２質量％、Ｋ２Ｏを０．２１〜１質量％、Ａｌ２Ｏ３を０．１〜０．４質量％、含有し、Ｂ２Ｏ３を実質的に含有せず、前記Ｎａ２Ｏ及び前記Ｋ２Ｏの含有量が、次の式（１）０．１５質量％≦ＣＫ２Ｏ／２＋ＣＮａ２Ｏ≦０．６質量％…（１）（式中、ＣＫ２ＯはＫ２Ｏの含有量、ＣＮａ２ＯはＮａ２Ｏの含有量、であり、これら含有量はいずれも耐火物中における質量％で表す。）の関係を満たす高ジルコニア質電鋳耐火物。【選択図】図１Ａ
HIGH ZIRCONIA ELECTROCAST REFRACTORY MATERIAL AND PRODUCTION METHOD THEREOF
To provide a high zirconia electrocast refractory material which has crack formation on production and crack formation when used as a refractory lining being reduced more while maintaining extremely high corrosion resistance to a molten glass.SOLUTION: The high zirconia electrocast refractory material contains, as a chemical composition, on oxide basis, 96.7-98.5 mass% of ZrO, 0.8-2.7 mass% of SiO, 0-0.2 mass% of NaO, 0.21-1 mass% of KO, and 0.1-0.4 mass% of AlO, substantially does not contain BO, wherein contents of the NaO and the KO are represented by the following formula (1): 0.15 mass %≤C/2+C≤0.6 mass% (1) (in the formula, Cis the content of KO, and Cis the content of NaO; these contents represent mass% in the refractory material).SELECTED DRAWING: Figure 1A
【課題】溶融ガラスに対する極めて高い耐食性を保持しながら、製造時の亀裂の発生や炉材としての使用時における亀裂の発生がより低減された高ジルコニア質電鋳耐火物の提供。【解決手段】化学成分として、酸化物基準で、ＺｒＯ２を９６．７〜９８．５質量％、ＳｉＯ２を０．８〜２．７質量％、Ｎａ２Ｏを０〜０．２質量％、Ｋ２Ｏを０．２１〜１質量％、Ａｌ２Ｏ３を０．１〜０．４質量％、含有し、Ｂ２Ｏ３を実質的に含有せず、前記Ｎａ２Ｏ及び前記Ｋ２Ｏの含有量が、次の式（１）０．１５質量％≦ＣＫ２Ｏ／２＋ＣＮａ２Ｏ≦０．６質量％…（１）（式中、ＣＫ２ＯはＫ２Ｏの含有量、ＣＮａ２ＯはＮａ２Ｏの含有量、であり、これら含有量はいずれも耐火物中における質量％で表す。）の関係を満たす高ジルコニア質電鋳耐火物。【選択図】図１Ａ
HIGH ZIRCONIA ELECTROCAST REFRACTORY MATERIAL AND PRODUCTION METHOD THEREOF
高ジルコニア質電鋳耐火物及びその製造方法
MATANO KENJI (Autor:in) / TOMURA NOBUO (Autor:in)
28.03.2019
Patent
Elektronische Ressource
Japanisch
IPC:
C04B
Kalk
,
LIME
/
C03B
Herstellung oder Formgebung von Glas, Mineral- oder Schlackenwolle
,
MANUFACTURE OR SHAPING OF GLASS, OR OF MINERAL OR SLAG WOOL
/
F27D
Einzelheiten oder Zubehör für Industrieöfen, Schachtöfen, Brennöfen oder Retorten, soweit sie nicht auf eine Ofenart eingeschränkt sind
,
DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
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