搅拌釜操作和结构参数对颗粒混合性能影响的模拟研究  

Simulation study on the effect of operational and structural parameters on mixing performance of agitator

作　　者：赖莉莹 孙永昌 黎晴晴 何新航 张芮 李政权 LAI Liying;SUN Yongchang;LI Qingqing;HE Xinhang;ZHANG Rui;LI Zhengquan(China-Australia International Research Institute for REEM,Jiangxi University of Science and Technology,Ganzhou 341000,Jiangxi,China;College of Biological and Agricultural Engineering,Jilin University,Changchun 130022,China)

机构地区：[1]江西理工大学中澳REEM国际研究院,江西赣州341000 [2]吉林大学生物与农业工程学院,长春130022

出　　处：《江西冶金》2021年第2期10-19,共10页Jiangxi Metallurgy

基　　金：国家自然科学基金资助项目(51675218,51364014);江西省教育厅科学技术研究项目资助(GJJ180426)。

摘　　要：为了提高无挡板立式搅拌釜的混合性能,应用离散元法研究了操作参数和结构参数对颗粒混合性能的影响。应用接触数法对不同参数下的混合度进行评价,结合颗粒的空间合角速度来分析颗粒混合的特性。研究结果表明:转速越大,混合度越高;搅拌桨离底高度越大,表面混合度越大,底面混合度越小;桨叶半径为33 mm时混合性能较优;桨叶数目越多,混合度越小。In order to improve the mixing performance of the baffle-free vertical stirred tank,the effects of operating parameters and structural parameters on the particle mixing performance were studied using discrete element method(DEM).The contact number method was applied to evaluate the mixing degree of each parameter,and the characteristics of particle mixing are analyzed in conjunction with the spatial angular velocity of the particles.It was found that the greater the rotation speed,the higher the degree of mixing;the greater the height of the stirring paddle from the bottom,the greater the surface mixing degree,and the lower the bottom mixing degree.The best mixing performance can be found when the blade radius is 33 mm;the greater the number of blades,the smaller the mixing degree.

关 键 词：搅拌釜 参数 混合性能 数值模拟 离散元法 

分 类 号：TF802.6[冶金工程—有色金属冶金]