High-pressure grinding rolls (HPGR) is an energy-efficient size reduction equipment widely used in the mining industry. Simulating and analyzing its performance is of significant importance. This paper focuses on the comminution process of HPGR and simulates it using the discrete element method (DEM) and particle replacement model (PRM). Furthermore, the combination of DEM simulation and Box-Behnken designs (BBD) is employed. The effects of roll diameter, roll width, operating gap, and roll speed on HPGR performance are investigated using analysis of variance (ANOVA) and response surface methodology (RSM). A performance prediction model is established through regression analysis, and numerical optimization of performance indicators under different weight ratios is conducted. The results indicate that rolls with a high aspect ratio generally achieve better performance. In addition, the effect of feed particle size on throughput and power is negatively correlated, while the effect on product fineness is not obvious. Based on this, dynamic adjustments of the operating gap, roll speed and feed particle size can be made to meet the optimal design of HPGR performance.

中文翻译：

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基于 DEM-PRM 的高压磨辊性能仿真分析


高压辊磨辊 （HPGR） 是一种广泛用于采矿业的节能粉碎设备。模拟和分析其性能非常重要。本文重点介绍了 HPGR 的粉碎过程，并使用离散元法 （DEM） 和颗粒替代模型 （PRM） 对其进行了模拟。此外，还采用了 DEM 仿真和 Box-Behnken 设计 （BBD） 的组合。使用方差分析 （ANOVA） 和响应面法 （RSM） 研究了辊直径、辊宽、操作间隙和辊速对 HPGR 性能的影响。通过回归分析建立性能预测模型，并对不同权重比下的性能指标进行数值优化。结果表明，具有高纵横比的卷筒通常具有更好的性能。此外，进料粒度对产量和功率的影响呈负相关，而对产品细度的影响并不明显。基于此，可以动态调整操作间隙、辊速和进料粒度，以满足 HPGR 性能的最佳设计。