基于离散元素方法的矿石材料滚筒粉碎的机械特性
Ruijie Gu1,2, Zhenzhong Qin1, Shuaifeng Zhao3
1School of Mechatronics Engineering, Henan University of Science and Technology, Luoyang, 471003, China.
Scientific reports
|January 4, 2025
概括
高压研磨卷 (HPGR) 在矿石加工中可节省能源. 本研究使用离散元素方法模拟来分析HPGR矿石粉碎过程中的力量,揭示粒子速度.
科学领域:
- * 矿物加工工程 矿物加工工程
- * 材料科学与工程 * 材料科学与工程
- * 机械工程 机械工程
背景情况:
- *高压研磨卷 (HPGR) 对于高能效的矿石粉碎和矿物加工中的减排至关重要.
- *了解HPGR内部的机械力和材料行为对于优化性能至关重要.
- *现有研究需要进一步扩展卷结构,工艺参数和料大小对压缩力的影响.
研究的目的:
- *使用离散元件方法 (DEM) 在HPGR滚筒粉碎过程中研究矿石材料的机械特性.
- * 分析不同卷结构,工艺参数和料颗粒大小对压碎力的影响.
- * 综合评估矿石破碎过程,考虑颗粒力和滚筒和板的磨损.
主要方法:
- *使用压缩和冲击压碎试验对铁矿石破碎模型进行校准.
- * 开发用于HPGR粉碎的DEM模拟,结合各种卷结构,工艺参数和料尺寸.
- * 粒子速度分析的创新应用,以确定压缩区不同区域内的力.
主要成果:
- *HPGR中的矿石材料在压碎过程中主要受到正常力的作用.
- * 压缩区内的粒子力与平均粒子速度相关.
- *综合分析揭示了粒子力与滚筒和脸板的磨损之间的相互作用.
结论:
- *优化HPGR破碎需要将破碎过程与滚筒和脸板磨损相结合.
- * 该研究确定了滚筒和脸板之间的脆弱区域.
- * 发现滚筒所施加的挤出压力略低于粒子间切削力.
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