摘要
为提升立式辊磨机粉磨性能,在分析得出辊盘配合形式、磨辊个数、转速为粉磨性能主要影响因素后,以颗粒黏结建模思想构建物料模型,将黏结键断裂数作为评价指标,基于离散元软件EDEM进行单因素实验与正交实验。运用MATLAB做回归分析,建立黏结键断裂数与磨辊个数和转速的函数关系模型与响应曲面图,然后将正交试验得出的最优方案代入计算,最后通过仿真验证最优方案的粉磨效率。结果表明:立式辊磨机的粉磨效率受辊盘配合形式的影响,且随着磨辊数与转速的增大而提升,仿真试验也验证了最佳方案的可行性,为立式辊磨机的设计提供了参考。
In order to improve the grinding performance of vertical roller mill, after analyzing the main factors affecting the grinding performance, such as the matching form of roll disc,the number of rolls and the rotational speed, the material model was constructed with the idea of particle bonding modeling. Taking the number of broken bonding as the evaluation index the single-factor experiment and orthogonal experiment were carried out based on the discrete element software EDEM. The regression analysis was carried out with software MATLAB, and the functional relationship model and response surface graph between the number of broken bonding with the number of rollers and rotational speed were established. Then the optimal grinding scheme obtained by orthogonal experiment was substituted for calculation. Finally, the grinding efficiency of the optimal scheme was verified by simulation. The results showed that the grinding efficiency of vertical roller mill was affected by the matching form of roll disc, and increased with the increase of the number of rollers and rotational speed. The simulation test also verified the feasibility of the optimal scheme, which provided a reference for the design of vertical roller mill.
作者
汪利萍
张立祥
杨文杰
WANG Liping;HANG Lixiang;YANG Wenjie(Anhui University of Science and Technology Huainan, Anhui 232001, China)
出处
《矿业研究与开发》
CAS
北大核心
2019年第3期132-136,共5页
Mining Research and Development
关键词
立式辊磨机:EDEM
颗粒粘结
单因素实验
正交试验
回归分析
Vertical roller mill
EDEM
Particle bonding
Single-factor experiment
Orthogonal tests
Regression analysis
