Simulation Analysis of Cylinder Optimization of Ball Mill Based on ANSYS/EDEM
In order to improve the grinding effect of the ball mill,the author makes use of the discrete element software EDEM and ANSYS for simulated experimental analysis.The results show that the maximum wear of the round liner is 6.013 8×e25,the maximum wear of the rectangular liner is 7.547 4×e-6,and the maximum wear of the double waveform liner is 2.762 1×e-7.Through analysis,it can be conducted that the wear of liners with double-waveform structure is the smallest.It is found that the model frequency and the excitation frequency of the 1st to 6th order are much lower than the minimum natural frequency of 0.236 58 Hz,and no violent vibration occurs.The driving frequency of the drum and the impact frequency of the grinding ball are much smaller than the natural frequencies of each order of the cylinder,and the natural frequencies of the cylinder structure has little effect on the vibration amplitude of the cylinder.The same batch of samples are tested by equipment before and after optimization.The average particle diameter of the product before equipment optimization is 108.9 μm,and the average after optimization is 48.1 μm.The particle diameter is significantly smaller and more stable,indicating that the optimized grinding effect is better.
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