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