基于气固两相流耦合的雷蒙机分级规律研究  

Study on Classification Law of Raymond Mill Based on Gas-solid Two-phase Flow Coupling

作　　者：陈伟燚 卢伟 姚嘉 姜兵兵 张鑫[1] CHEN Weiyi;LU Wei;YAO Jia;JIANG Bingbing;Zhang xin(School of Mechanical and Electrical Engineering,Guilin University of Electronic Technology,Guilin,Guangxi 541004,China)

机构地区：[1]桂林电子科技大学机电工程学院,广西桂林市541004

出　　处：《矿业研究与开发》2023年第3期191-197,共7页Mining Research and Development

基　　金：广西研究生联合培养基地项目(桂学位[2021]6号);广西制造系统与先进制造技术重点实验室主任基金项目(22-35-4-S007)。

摘　　要：为了研究雷蒙机分级转笼参数对成品颗粒收集效率的影响,基于FLUENT软件的离散项模型(DPM),利用Design-Expert10进行三因素三水平的响应面试验设计,将转笼转速、叶片数、叶片安装角度作为变量,成品颗粒收集效率作为研究对象,进行气固两相流耦合仿真试验。仿真试验结果表明提高转笼转速以及增加叶片数量有利于提高雷蒙机的成品收集效率。仿真分析采用双相耦合的计算方法,但结果表明颗粒的运动轨迹主要受到风场影响,局部涡流会改变颗粒运动轨迹,优化结构设计尽可能地减少局部涡流,能够顺畅保证颗粒进行分级运动。结合风场趋势分析得到:颗粒在分级区域所受径向速度较小时有利于颗粒从叶片间隙之间平稳地进入转笼内部进行分级;切向速度较大时有利于收集更小粒径的颗粒。研究成果为提高雷蒙机颗粒收集效率以及结构优化提供了参考依据。In order to study the effect of the parameters of the rotor cage of Raymond mill on the collection efficiency of finished particles, based on the discrete part model(DPM) of FLUENT software, the response experiment of three factors and three levels was designed using Design-Expert10.The rotating speed of the rotor cage, the blade number and the blade angle were taken as variables, and the collection efficiency of finished particles was taken as the research object, and the simulation test of gas-solid two-phase flow coupling was carried out. The simulation test results show that increasing the rotating speed of the rotor cage and increasing the blade number can improve the collection efficiency of the finished particles of the Raymond mill. The simulation analysis adopts the two-phase coupling calculation method, but the results show that the trajectory of the particles is mainly affected by the wind field, and the local eddy current will change the trajectory of the particles. The optimized structure design can reduce the local eddy current as much as possible, and can ensure that the particles move smoothly. Combined with the trend analysis of wind field, it is concluded that the small radial velocity of particles in the grading area is conducive to the smooth entry of particles from the gap between the blades into the cage for grading, and it is beneficial to collect particles with small particle size when the tangential velocity is large. The research results provide a reference for improving the particle collection efficiency and structure optimization of Raymond mill.

关 键 词：雷蒙机 气固两相流 耦合仿真 响应面试验 分级效率 

分 类 号：TD454[矿业工程—矿山机电]