JP6777479B2 - 不定形耐火物 - Google Patents
不定形耐火物 Download PDFInfo
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Description
(1)粒径8mm以下の耐火原料100質量%に占める割合で、CaXSr1−XAl2O4(但し、0≦X≦0.5)の含有量が0.5質量%以上10質量%以下、オキシカルボン酸の多価金属塩の含有量が0.05質量%以上1.0質量%以下であり、前記オキシカルボン酸の多価金属塩が塩基性乳酸アルミニウム及び/又は塩基性乳酸・グリコール酸アルミニウムである不定形耐火物、
(2)前記オキシカルボン酸の多価金属塩の含有量が0.1質量%以上1.0質量%以下である(1)に記載の不定形耐火物、
(3)粒径8mm以下の耐火原料100質量%に占める割合で、CaXSr1−XAl2O4(但し、0≦X≦0.5)とCaYSr1−YAl4O7(但し、0≦Y≦0.5)と12(CaO)Z(SrO)1−Z・7Al2O3(但し、0≦Z≦0.5)の合計の含有量が10質量%以下である請求項1又は2に記載の不定形耐火物、
(4)前記耐火原料100質量%に占める割合で、粒径0.1mm以下のマグネシア原料の含有量が3質量%以上12質量%以下である(1)から(3)のいずれかに記載の不定形耐火物、
(5)前記耐火原料100質量%に占める割合で、粒径0.1mm以下のスピネル原料の含有量が5質量%以上25質量%以下である(1)から又は(3)のいずれかに記載の不定形耐火物、
(6)前記耐火原料100質量%に占める割合で、粒径0.1mm超8mm以下のアルミナ原料及びスピネル原料の少なくとも1種の合計の含有量が55質量%以上75質量%以下である(1)から(5)のいずれかに記載の不定形耐火物、
にある。
Claims (6)
- 粒径8mm以下の耐火原料100質量%に占める割合で、CaXSr1−XAl2O4(但し、0≦X≦0.5)の含有量が0.5質量%以上10質量%以下、オキシカルボン酸の多価金属塩の含有量が0.05質量%以上1.0質量%以下であり、前記オキシカルボン酸の多価金属塩が塩基性乳酸アルミニウム及び/又は塩基性乳酸・グリコール酸アルミニウムである不定形耐火物。
- 前記オキシカルボン酸の多価金属塩の含有量が0.1質量%以上1.0質量%以下である請求項1に記載の不定形耐火物。
- 粒径8mm以下の耐火原料100質量%に占める割合で、CaXSr1−XAl2O4(但し、0≦X≦0.5)とCaYSr1−YAl4O7(但し、0≦Y≦0.5)と12(CaO)Z(SrO)1−Z・7Al2O3(但し、0≦Z≦0.5)の合計の含有量が10質量%以下である請求項1又は2に記載の不定形耐火物。
- 前記耐火原料100質量%に占める割合で、粒径0.1mm以下のマグネシア原料の含有量が3質量%以上12質量%以下である請求項1から3のいずれかに記載の不定形耐火物。
- 前記耐火原料100質量%に占める割合で、粒径0.1mm以下のスピネル原料の含有量が5質量%以上25質量%以下である請求項1から3のいずれかに記載の不定形耐火物。
- 前記耐火原料100質量%に占める割合で、粒径0.1mm超8mm以下のアルミナ原料及びスピネル原料の少なくとも1種の合計の含有量が55質量%以上75質量%以下である請求項1から5のいずれかに記載の不定形耐火物。
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