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为了提高球磨机的磨粉效果，利用离散元软件EDEM和ANSYS进行仿真模拟试验分析。结果表明：圆形衬板的最大磨损量为6.013 8×e25，矩形衬板的最大磨损量为7.547 4×e-6，双波形衬板的最大磨损量为2.762 1×e-7。通过分析可知，双波形结构的衬板磨损量最小； 1—6阶各阶模态频率、激振频率远低于最小阶固有频率0.236 58 Hz，不会发生剧烈振动；滚筒的驱动频率与磨球的冲击频率远小于筒体的各阶固有频率，筒体结构的固有频率对于筒体的振动幅度影响不大。用优化前后的设备对同批样品进行试验，设备优化前的产品颗粒直径平均为108.9 μm，优化后平均为48.1 μm，颗粒直径明显变小且更稳定，说明优化后磨粉效果更好。
Abstract：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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基本信息:
DOI：10.19929/j.cnki.nmgdljs.2024.0031
中图分类号:
引用信息:
[1]陈艳艳, 曾其良, 郭纯等.基于ANSYS/EDEM的球磨机筒体优化仿真分析[J].内蒙古电力技术,2024,42(02):89-95.DOI:10.19929/j.cnki.nmgdljs.2024.0031.
基金信息:
安徽省自然科学基金项目“非晶-纳米晶双相结构复合涂层设计、制备及性能研究”（1908085QE174）；安徽省自然科学项目“农机装备零部件表面防护技术研究”（2023AH040273）；凤阳县科技振兴项目“TFT硅微粉末自动化成套装备设计及关键技术研究”（880839）