基于 DEM-PRM 的高压磨辊性能模拟与分析

IF 4.9 2区 工程技术 Q1 ENGINEERING, CHEMICAL Minerals Engineering Pub Date : 2024-10-07 DOI:10.1016/j.mineng.2024.109039
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引用次数: 0

摘要

高压辊磨机(HPGR)是一种广泛应用于采矿业的节能减小粒度设备。模拟和分析其性能具有重要意义。本文重点研究了高压辊磨机的粉碎过程,并使用离散元法(DEM)和颗粒置换模型(PRM)对其进行了模拟。此外,还采用了离散元模拟和盒式贝肯设计(BBD)相结合的方法。使用方差分析(ANOVA)和响应面方法(RSM)研究了轧辊直径、轧辊宽度、工作间隙和轧辊速度对 HPGR 性能的影响。通过回归分析建立了性能预测模型,并对不同重量比下的性能指标进行了数值优化。结果表明,高纵横比的轧辊通常能获得更好的性能。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不明显。在此基础上,可以对工作间隙、轧辊速度和给料粒度进行动态调整,以达到 HPGR 性能的最佳设计。
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Simulation and analysis of high-pressure grinding rolls performance based on DEM-PRM
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.
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来源期刊
Minerals Engineering
Minerals Engineering 工程技术-工程:化工
CiteScore
8.70
自引率
18.80%
发文量
519
审稿时长
81 days
期刊介绍: The purpose of the journal is to provide for the rapid publication of topical papers featuring the latest developments in the allied fields of mineral processing and extractive metallurgy. Its wide ranging coverage of research and practical (operating) topics includes physical separation methods, such as comminution, flotation concentration and dewatering, chemical methods such as bio-, hydro-, and electro-metallurgy, analytical techniques, process control, simulation and instrumentation, and mineralogical aspects of processing. Environmental issues, particularly those pertaining to sustainable development, will also be strongly covered.
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