基于EDEM的高效生成料床方法研究

由于立式辊磨机料床粉碎所处的环境不利于观察研究,运用离散元软件——EDEM,仿真料床粉碎可解决该问题。相比其他形成料床的条件,利用EDEM仿真生成立式辊磨机的料床时,喂料量是最根本的影响因素,喂料量过多或过少都不利于后续研究的进行。针对该问题,提出了3种方案,分别是直线型磨盘、增加磨辊个数和投入不同大小未完全破碎的物料。通过对3种方案仿真结果的对比,最终确定投入不同大小未完全破碎物料的方案为基于EDEM高效生成料床的最佳方案。

Research on Efficient Generation of Material Bed Based on EDEM

Because the environment of vertical roller mill material bed comminution is not conducive to observation and research, the problem can be solved by using the discrete element software-EDEM to simulate material bed comminution. By using EDEM simulation to generate the material bed of vertical roller mill, the feeding amount is the most fundamental factor compared with other conditions of forming material bed. Too much or too little is not conducive to the follow-up study. Aiming at this problem, three kinds of efficient generating material bed are proposed to reduce the simulation time and do not affect the feeding amount, which are using linear grinding disc, increasing the number of grinding rolls and the input of materials which are not completely broken in different sizes. By comparing the simulation results of the three methods, a simulation scheme based on EDEM efficient generating bed was established to determine the materials with different sizes of incomplete crushing finally.