Grain Gradation Design for Al2O3-Mgo-C Refractories Based on Close Packing Theories
In this study, raw materials in five different commercially available size ranges were mixed to prepare blank for Al2O3-MgO-C refractories. In the light of close packing theory, the optimization model for getting the optimum grain gradation was founded. And optimum ratio for raw materials of different size and distribution character was concluded by solving the model to obtain closest packing. The result shows that stacking density and tap density of the blank came from the particle mixture with optimized grain gradation reached 1.46 and 1.70g/cm3 individually, both were higher than those of the blank made of mixture according to empirical grain gradation. And the microstructures observation result indicated that the voids among aggregate particles in the refractory came from the mixture with optimized grain gradation were separated into small and discrete ones while they were bigger in the refractory produced following empirical grain gradation.
Al2O3-Mgo-C Particle Size Distribution Close Packing Theory Optimization Model.
Zhao Shumao Yang Wei Sun Jie Xie Zhi
Northeastern University, No.11, Lane 3, Wenhua Road, Heping District, Shenyang, 110004 China Shenyang Taihe Metallurgical Measurement and Control Technologies Co., Ltd., No. 26, No. 20North Roa
国际会议
上海
英文
63-66
2011-10-27（万方平台首次上网日期，不代表论文的发表时间）