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ALUMINA-ZIRCON-BADDELEYITE-BASED REFRACTORY AND ALUMINA-ZIRCON-ZIRCONIA-BASED REFRACTORY

机译:铝-锆石-辉石-耐火材料和铝-锆石-锆石-耐火材料

摘要

PROBLEM TO BE SOLVED: To obtain a refractory excellent in corrosion and creep resistances by composing the refractory of a raw material of a sintered or a fused alumina, zircon and baddeleyite and specifying the component composition and physical properties. ;SOLUTION: This alumina-zircon-baddeleyite-based refractory is obtained by regulating the component composition to 50-80wt.% Al2O3, 5-15wt.% SiO2 and 15-40wt.% ZrO2, the bulk specific gravity to ≥3.30, preferably 3.30-3.45 and the creep deformation ratio after the passage of 24hr under conditions of 1600°C and 0.5MPa to ≤2.0%, preferably 0-1.5% or using a sintered or a fused alumina, zircon and a fused alumina-zirconia as a raw material and regulating the component composition to 50-80wt.% Al2O3, 5-15wt.% SiO2, 15-35wt.% ZrO2, the bulk specific gravity to ≥3.30, preferably 3.30-3.45 and the creep deformation ratio after the passage of 24hr under conditions of 1600°C and 0.5MPa to ≤2.0%, preferably 0-1.5%. The resultant refractory is excellent in infiltration resistance.;COPYRIGHT: (C)1998,JPO
机译:解决的问题:通过组合烧结或熔凝的氧化铝,锆石和坏死铝矾土的原材料的耐火材料并指定组分组成和物理性能,以获得耐腐蚀和蠕变性能优异的耐火材料。 ;解决方案:通过将成分组成调整为50-80wt。%Al 2 O 3 ,5-15wt。%SiO,可获得这种基于氧化铝-锆石-baddeleyite的耐火材料 2 和15-40wt。%ZrO 2 ,体积比重≥3.30,最好为3.30-3.45,在1600°C条件下经过24小时后的蠕变变形率℃和0.5MPa至≤2.0%,优选0-1.5%,或使用烧结的或熔融的氧化铝,锆石和熔融的氧化铝-氧化锆作为原料并将组分组成调节至50-80wt。%Al 2 O 3 ,5-15wt。%SiO 2 ,15-35wt。%ZrO 2 ,相对于≥3.30,优选3.30-3.45,并且在1600℃和0.5MPa的条件下经过24小时后的蠕变变形率≤2.0%,优选0-1.5%。所得耐火材料具有极好的抗渗透性。;版权所有:(C)1998,日本特许厅

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