Full
Outline
In order to explore the influence mechanism of structural parameters of vertical spiral stirred mill on grinding performance, the coupling method of discrete element method (DEM) and computational fluid dynamics (CFD) was used to systematically analyze the effects of mill bottom gap, side gap and helical lift angle on grinding performance. Firstly, the numerical model of the vertical spiral stirred mill was constructed, and the dynamic characteristics of the medium in the grinding process were revealed by simulation. Secondly, the grinding test was carried out based on the test bench, and the accuracy of the simulation model was verified by the driving torque of the spiral agitator. The results show that the maximum error is only 3.85%. Finally, through multi-parameter simulation and orthogonal test, the influence degree of each structural parameter on grinding performance was quantified, and a comprehensive evaluation method based on energy utilization rate, torque, average normal force and tangential force was proposed. The results show that the side gap of the mill has the most significant effect on the grinding performance, followed by the bottom gap and the helical lift angle. The optimal parameter combination is the ratio of the bottom gap to the medium sphere diameter A=4.0, the ratio of the side gap to the sphere diameter B=3.0 and the helical lift angle C=0.61. The research can provide a reference for the structural optimization and performance improvement of vertical spiral stirred mill.
63
36
| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
关闭全屏
No. 86 Xueyuan South Road, Haidian District, Beijing
010-62662699(Operation and Technical Support)
qkjq@cast.org.cn
Copyright © 2025 China Association for Science and Technology. All rights reserved. For all open access content, the relevant licensing terms apply.
Sponsored by the Office of the Leading Group for Cybersecurity and Informatization of CAST, and supported by Science and Technology Review Publishing House
