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REFRACTORY PRODUCT HAVING HIGH ZIRCONIA CONTENT
PROBLEM TO BE SOLVED: To provide refractory products with improved electrical resistivity, without having to use dopants, while having resistance to corrosion by glass, in which the refractory products can be used in high-quality glass melting furnaces.SOLUTION: The present invention relates to a refractory product obtained by molten casting, the refractory product comprising, in weight percentages on the basis of the oxides and for a total of 100% of the oxides: ZrO+HfO: remainder to 100% 4.5%<0.80%, 0.3%<0.15%, NaO+KO<0.1%, KO<0.04%, CaO+SrO+MgO+ZnO+BaO<0.4%, pO<0.05%, FeO+TiO<0.55%, other oxide species, optionally including YO:<1.5%, where YO<0.3%, the "A/B" ratio of AlO/BOcontent by weight being 0.5 to 2.0.
【課題】ガラスによる腐食に対する耐性を有しながら、ドーパントを使用せず、改善された電気抵抗率が要求される、高品質ガラス溶解炉内で使用可能な耐火製品の提供。【解決手段】酸化物に基づく重量百分率で前記酸化物の合計１００％に対して、ＺｒＯ２＋Ｈｆ２Ｏ：１００％までの補完分４．５％＜ＳｉＯ２＜６．０％、Ａｌ２Ｏ３＜０．８０％、０．３％＜Ｂ２Ｏ３＜１．０％、Ｔａ２Ｏ５＋Ｎｂ２Ｏ５＜０．１５％、Ｎａ２Ｏ＋Ｋ２Ｏ＜０．１％、Ｋ２Ｏ＜０．０４％、ＣａＯ＋ＳｒＯ＋ＭｇＯ＋ＺｎＯ＋ＢａＯ＜０．４％、Ｐ２Ｏ６＜０．０５％、Ｆｅ２Ｏ３＋ＴｉＯ２＜０．５５％、任意的にＹ２Ｏ３を含む他の酸化物種：＜１．５％、但しＹ２Ｏ３＜０．３％、を含み溶融鋳造して得られる耐火製品であって、Ａｌ２Ｏ３／Ｂ２Ｏ３重量含有量の比Ａ／Ｂが０．５〜２．０である耐火製品。【選択図】なし
REFRACTORY PRODUCT HAVING HIGH ZIRCONIA CONTENT
PROBLEM TO BE SOLVED: To provide refractory products with improved electrical resistivity, without having to use dopants, while having resistance to corrosion by glass, in which the refractory products can be used in high-quality glass melting furnaces.SOLUTION: The present invention relates to a refractory product obtained by molten casting, the refractory product comprising, in weight percentages on the basis of the oxides and for a total of 100% of the oxides: ZrO+HfO: remainder to 100% 4.5%<0.80%, 0.3%<0.15%, NaO+KO<0.1%, KO<0.04%, CaO+SrO+MgO+ZnO+BaO<0.4%, pO<0.05%, FeO+TiO<0.55%, other oxide species, optionally including YO:<1.5%, where YO<0.3%, the "A/B" ratio of AlO/BOcontent by weight being 0.5 to 2.0.
【課題】ガラスによる腐食に対する耐性を有しながら、ドーパントを使用せず、改善された電気抵抗率が要求される、高品質ガラス溶解炉内で使用可能な耐火製品の提供。【解決手段】酸化物に基づく重量百分率で前記酸化物の合計１００％に対して、ＺｒＯ２＋Ｈｆ２Ｏ：１００％までの補完分４．５％＜ＳｉＯ２＜６．０％、Ａｌ２Ｏ３＜０．８０％、０．３％＜Ｂ２Ｏ３＜１．０％、Ｔａ２Ｏ５＋Ｎｂ２Ｏ５＜０．１５％、Ｎａ２Ｏ＋Ｋ２Ｏ＜０．１％、Ｋ２Ｏ＜０．０４％、ＣａＯ＋ＳｒＯ＋ＭｇＯ＋ＺｎＯ＋ＢａＯ＜０．４％、Ｐ２Ｏ６＜０．０５％、Ｆｅ２Ｏ３＋ＴｉＯ２＜０．５５％、任意的にＹ２Ｏ３を含む他の酸化物種：＜１．５％、但しＹ２Ｏ３＜０．３％、を含み溶融鋳造して得られる耐火製品であって、Ａｌ２Ｏ３／Ｂ２Ｏ３重量含有量の比Ａ／Ｂが０．５〜２．０である耐火製品。【選択図】なし
REFRACTORY PRODUCT HAVING HIGH ZIRCONIA CONTENT
高ジルコニア含有量を有する耐火製品
ISABELLE CABODI (author) / MICHEL GAUBIL (author)
2016-01-07
Patent
Electronic Resource
Japanese