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| 尖晶石对凝胶结合氧化铝空心球浇注料性能的影响 | |
| 引用本文： | 张玲利,罗旭东,张国栋,刘海啸. 尖晶石对凝胶结合氧化铝空心球浇注料性能的影响[J]. 耐火与石灰, 2011, 36(3): 8-10,12 |
| 作者姓名： | 张玲利 罗旭东 张国栋 刘海啸 |
| 作者单位： | 1. 辽宁科技大学高温材料与镁资源学院,鞍山,114051 2. 辽宁科技大学材料与冶金学院,鞍山,114051 |
| 摘 要： | 以5～3mm、3～2mm、2～1mm、1～0.2mm粒度氧化铝空心球为原料,引入二氧化硅微粉制成凝胶结合氧化铝空心球浇注料,研究了预合成镁铝尖晶石对凝胶结合氧化铝空心球浇注料性能的影响。用各种耐火制品检测设备和仪器对引入不同量尖晶石的试样性能进行了检测。结合氧化镁-氧化铝-二氧化硅相图进行理论分析,结果发现:尖晶石的引入促进了浇注料中刚玉相的烧结,提高了凝胶结合氧化铝空心球浇注料的常温耐压强度和显气孔率,降低了浇注料的体积密度。尖晶石对凝胶结合氧化铝空心球浇注料基质具有强化作用,有利于提高浇注料的热震稳定性 |
| 关 键 词： | 尖晶石 凝胶结合 氧化铝空心球 浇注料 |
Effect of spinel on properties of gel bonded alumina hollow ball castable |
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| Zhang Lingli,Luo Xudong,Zhang Guodong,Liu Haixiao. Effect of spinel on properties of gel bonded alumina hollow ball castable[J]. Foreign Refractories, 2011, 36(3): 8-10,12 | |
| Authors: | Zhang Lingli Luo Xudong Zhang Guodong Liu Haixiao |
| Affiliation: | 1.High Temperature Material and Magnesite Resource Engineering College of Liaoning University of Science and Technology,Anshan 114051,China;2.Material and Metallurgical Engineering College of Liaoning University of Science and Technology,Anshan 114051,China) |
| Abstract: | By using alumina hollow balls with grain sizes of 5~3mm,3~2mm,2~1mm and 1~0.2mm as raw material and adding SiO2 micro-powder the gel bonded alumina hollow ball castable is formed.The effect of pre-synthesized magnesia-alumina spinel on the properties of gel bonded alumina hollow ball castable is studied.The property determination of spinel specimens adding different amounts of spinel is carried out with various kinds of refractory product determining and analytical equipment and instrument.In combination with the theoretical analysis done with magnesia-alumina-silica phase diagram,the result shows that the addition of spinel promotes the sintering function of corundum phase in castable,raises the cold crushing strength and apparent porosity of gel bonded alumina hollow ball castale and reduces the bulk density of it.Spinel has the strengthening function to the matrix of the gel bonded alumina hollow ball castable and is favorable to improve the thermal shock resistance of it. |
| Keywords: | Spinel Gel bond Alumina hollow ball Castable |
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