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

Abstract

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

CLC Number:

TD453

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.

Figures/Tables 20

Table 1

Table 2

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Table 3

Table 4

Table 5

Test results"

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

Table 5

References 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）

Working performance of vertical screw stirring mill based on discrete element method

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