基于离散元方法的立式螺旋搅拌磨机工作性能

doi:10.13229/j.cnki.jdxbgxb.20221424

摘要/Abstract

摘要：

对影响立式螺旋搅拌磨机工作性能的主要结构及特征参数进行分析研究，提出了关键工作参数选择方法。基于离散元方法，首先建立了立式螺旋搅拌磨机的仿真模型，分析了主轴转速、搅拌器导程和研磨介质尺寸分布对磨矿性能的影响；然后，提出综合磨矿性能指标，对各参数进行正交试验，得到磨矿效果的量化值；最后，得到在特定权重系数下的最优工作参数组合，为磨机的优化设计提供了参考方法。

关键词: 立式螺旋搅拌磨机, 磨矿性能, 离散元, 工作参数, 正交试验

Abstract:

The main structure and characteristic parameters affecting the working performance of vertical screw stirring mill were analyzed and studied， and the selection method of key working parameters was proposed. Based on the discrete element method， the simulation model of vertical screw stirring mill was established， and the effects of spindle speed， agitator lead and grinding medium size distribution on grinding performance were analyzed. The comprehensive grinding performance index was put forward， orthogonal tests were carried out for each parameter， and the quantitative value of grinding effect was obtained， and then the optimal working parameter combination under specific weight coefficient was obtained， which provided a reference method for the optimal design of the mill.

Key words: vertical screw stirring mill, grinding performance, discrete element, operating parameters, orthogonal test

中图分类号:

TD453

谢朋书,崔达,王国强,李凯. 基于离散元方法的立式螺旋搅拌磨机工作性能[J]. 吉林大学学报(工学版), 2024, 54(9): 2423-2431.

Peng-shu XIE,Da CUI,Guo-qiang WANG,Kai LI. Working performance of vertical screw stirring mill based on discrete element method[J]. Journal of Jilin University(Engineering and Technology Edition), 2024, 54(9): 2423-2431.

图/表 20

表1

表2

图1

图2

图3

图4

图5

图6

图7

图8

图9

图10

图11

图12

图13

图14

图15

表3

表4

表5

试验结果"

编号	$x ˉ 1, i$	$x ˉ 2, i$	$x ˉ 3, i$	$x ˉ 4, i$	$x ˉ 5, i$	$W i$
1	0.692	0.825	0.869	0.778	0.781	0.440
2	0.828	0.543	0.600	0.916	0.913	0.524
3	0.749	0.350	1.349	0.533	0.532	0.610
4	0.767	0.333	0.881	0.764	0.763	0.569
5	0.959	1.275	0.633	1.097	1.092	0.471
6	0.950	0.846	0.946	0.884	0.890	0.579
7	0.964	0.618	0.955	0.905	0.904	0.635
8	0.919	0.460	1.452	0.685	0.683	0.708
9	1.047	1.554	1.531	0.717	0.716	0.564
10	1.064	1.211	0.982	1.035	1.031	0.587
11	1.122	0.933	0.975	1.106	1.116	0.680
12	1.156	0.794	0.656	1.501	1.502	0.728
13	1.126	2.484	0.974	1.192	1.186	0.385
14	1.202	1.425	1.554	0.853	0.857	0.685
15	1.281	1.295	0.655	1.689	1.685	0.714
16	1.174	1.055	0.988	1.347	1.351	0.723

表5

参考文献 22

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参数	数值	参数	数值
筒体内径/mm	3 288	螺旋个数/mm	2
搅拌器直径/mm	2 500	导程/mm	2 000
搅拌器轴径/mm	520	搅拌器与筒体底部的距离/mm	236.5
叶片厚度/mm	100	搅拌叶片高度/mm	4 000

水平	因素
水平	A转速/（r·min^-1）	B导程/mm	C研磨介质分布/mm
1	18	1 500	80
2	24	2 000	90
3	30	2 500	100
4	36	3 000	80~100（均匀分布）

编号	A转速/（r·min^-1）	B导程/mm	C研磨介质分布/mm
1	18	1 500	80~100（均匀分布）
2	18	2 000	100
3	18	2 500	80
4	18	3 000	90
5	24	1 500	100
6	24	2 000	80~100（均匀分布）
7	24	2 500	90
8	24	3 000	80
9	30	1 500	80
10	30	2 000	90
11	30	2 500	80~100（均匀分布）
12	30	3 000	100
13	36	1 500	90
14	36	2 000	80
15	36	2 500	100
16	36	3 000	80~100（均匀分布）