旋转流场式陶瓷干法制粉造粒立柱直径对粉体级配的影响  

Influence of prilling column diameter on powder grading in ceramic dry granulation by rotating flow field

作　　者：吴南星 赵增怡 花拥斌 程章云 刘玉涛 廖达海 WU Nanxing;ZHAO Zengyi;HUA Yongbin;CHENG Zhangyun;LIU Yutao;LIAO Dahai(School of Mechanical and Electronic Engineering, Jingdezhen Ceramic Institute, Jingdezhen 333403 , Chin)

机构地区：[1]景德镇陶瓷大学机械电子工程学院,江西景德镇333403

出　　处：《中国粉体技术》2018年第3期34-38,共5页China Powder Science and Technology

基　　金：国家自然科学基金项目;编号:51365018;江西省高等学校科技落地计划;编号:KJLD14074;江西省科技支撑计划;编号:20151BBE50041

摘　　要：基于CFD方法构建旋转流场式陶瓷干法制粉混料过程欧拉-欧拉双流体模型,模拟分析粉体体积分布情况,确定旋转流场式陶瓷干法制粉造粒立柱直径对粉体级配的影响。结果表明:当造粒立柱直径φ为70 mm时,粉体体积分布约为51%,轴向云图粉体堆积度最大为0.50,径向云图粉体最大堆积度为0.45,堆积范围最小,制粉室内无明显堆积现象,粉体级配最均匀;有效粉体占坯料粉体的比例最大为87%,且有效粉体粒径呈正态分布,此时粉体级配最为均匀。Eulerian-Eulerian two fluid models for rotating flow field ceramic dry granulation mixing process was established based on CFD method, the volume distribution of powders was simulated and the influence of the column diameter of the rotating flow field dry ceramic powder granulation method on the particle size distribution was determined. The results show that when the diameter of granulation column is 70 mm, the volume distribution of powder volume is approximately 51%, the axial cloud image powder has the maximum accumulation degree of0.50, and the maximum accumulation degree of the radial cloud is 0.45, the accumulation scope is the smallest. There is no obvious accumulation in the powder room, the powder level is the most uniform. The experimental results show that the ratio of the effective powder to the blank powder is 87%, and the effective particle size is normal distribution. At this point, the powder grading is the most uniform.

关 键 词：干法制粉 造粒立柱 欧拉-欧拉双流体模型 粉体级配 

分 类 号：TQ174.5[化学工程—陶瓷工业]