影响矾土基浇注料流动性的因素  

Influencing factors of liquidity of bauxite-based castable

作　　者：张敬伟[1] 魏发灿 徐恩霞[3] 

机构地区：[1]中钢集团耐火材料有限公司,河南洛阳471003 [2]郑州耐都热陶瓷有限公司,河南郑州452394 [3]郑州大学高温功能材料河南省重点实验室,河南郑州450052

出　　处：《冶金标准化与质量》2011年第1期49-52,共4页Metallurgical Standardization & Quality

摘　　要：以特级矾土、矾土刚玉、SiO2微粉、Al2O3微粉和水泥为主要原料，研究了颗粒形状、骨料与粉料的比例、微粉、水泥用量等对浇注料流动性的影响。结果表明：1）接近球形的颗粒可提高浇注料的流动性；2）当变化骨料与粉料的比例时，在实验范围内，随粉料含量增加，浇注料流动性提高；3）刚玉颗粒和细粉对浇注料流动性基本没有影响；4）浇注料流动性主要受微粉的影响。变化微粉和水泥的比时，随水泥含量增加，浇注料流动性降低；SiO2微粉比Al2O3微粉更有利于提高浇注料的流动性。Effects of morphology of aggregates, ratio of aggregates and fines, micro-powder and cement on flowability of castables have been studied using special bauxite, bauxite-based corundum, microsilica, micro-alumina and cement etc. as starting materials. The results show： 1 ） The sphere-like aggregates can contribute to increase in flowability; 2 ） Flowability increases with fines increase in the experimental range; 3 ） Corundum aggregates and fines have almost no influence on fiowability; 4 ） Micro-powder is the main factor influence flowability, flowability increases with micro-power increase, flowability decreases with cement increase; in contrast, microsilica is better than micro-alumina in improvement in flowability.

关 键 词：矾土基浇注料 流动性 SIO2微粉 AL2O3微粉 

分 类 号：TQ175.7[化学工程—硅酸盐工业]