Numerical Simulation of Particle Mixing Behavior in High Speed Shear Mixer and Cylinder Mixer

被引:11
作者
You, Yang [1 ,2 ]
Guo, Jiabao [1 ,2 ]
Lv, Xuewei [1 ,2 ]
Wu, Shanshan [1 ,2 ]
Li, Yong [1 ,2 ]
Tang, Kai [1 ,2 ]
Yu, Yaowei [3 ]
机构
[1] Chongqing Univ, Chongqing Key Lab Vanadium Titanium Met & New Mat, 174 Shazheng St, Chongqing 400044, Peoples R China
[2] Chongqing Univ, Coll Mat Sci & Engn, 174 Shazheng St, Chongqing 400044, Peoples R China
[3] Shanghai Univ, Sch Mat Sci & Engn, State Key Lab Adv Special Steel, Shanghai Key Lab Adv Ferromet, 99 Shangda Rd, Shanghai 2000444, Peoples R China
基金
中国博士后科学基金; 中国国家自然科学基金;
关键词
DEM simulation; high speed shear mixer; cylinder mixer; particle mixing efficiency; variation coefficient of homogeneity; ORE SINTER PROPERTIES; WET GRANULATION; PHARMACEUTICAL GRANULES; DEM; FLOW; SIZE; DESIGN; TORQUE;
D O I
10.2355/isijinternational.ISIJINT-2021-768
中图分类号
TF [冶金工业];
学科分类号
0806 ;
摘要
The mixing effect of powder materials is crucial in the iron ore granulation process, which determines the composition and particle size distribution, thereby affecting the quality of the sinter. To study the mixing effect of powder particles in a high speed shear mixer (HSSM) and cylinder mixer (CM), numerical simulation based on discrete element method was adopted in this work. For the CM, the particle movement consists of slipping and slumping. For the HSSM, the particle movement consists of rolling and cascading. The particle movement intensity coefficient of the HSSM is larger than that of CM, indicating that the movement of the particles in HSSM is more intensive. For HSSM case with four blades, the variation coefficient of homogeneity increases as rotational speed increases. The number of blades has little effect on the particle movement intensity coefficient and variation coefficient of homogeneity. In comparison to the CM, the variation coefficient of the HSSM reduce the most. It means that the mixing effect of HSSM is better than the CM. These findings are helpful for the improvement of the mixing and granulation efficiency in the iron ore sintering process.
引用
收藏
页码:2059 / 2065
页数:7
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