Simulation of Vertical Shaft Impact Crusher Crushing Process Based on Discrete Element Method
[1]He Zhanshu,Yu Jinlong,Chen Jiangyi,et al.Simulation of Vertical Shaft Impact Crusher Crushing Process Based on Discrete Element Method[J].Journal of Zhengzhou University (Engineering Science),2021,42(06):56-61.[doi:10.13705/j.issn.1671-6833.2021.04.019]
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Journal of Zhengzhou University (Engineering Science)[ISSN
1671-6833/CN
41-1339/T] Volume:
42
Number of periods:
2021 06
Page number:
56-61
Column:
Public date:
2021-11-10
- Title:
- Simulation of Vertical Shaft Impact Crusher Crushing Process Based on Discrete Element Method
- Keywords:
- vertical shaft impact crusher; discrete element method; crushing rate; rotor power; velocity of particle ejection
- CLC:
- -
- DOI:
- 10.13705/j.issn.1671-6833.2021.04.019
- Abstract:
- In order to improve the quality of sand product, the crushing process of the vertical shaft impact crusher was simulated. The transient crushing process of the vertical shaft impact crusher and the reason of particle breakage were analyzed; and the influence laws of different rotor diameters, rotor speeds, feed particle sizes and feed rates on the velocity of particle ejection, crushing rate and rotor power were investigated. In addition, the relationship between velocity of particle ejection and crushing rate was analyzed and the reliability of the simulation results was verified. The results show that particles could be accelerated by the rotor and thrown towards the wall of the crushing chamber, not only the violent collision between the high-speed particles and the wall of the crushing chamber, but also the violent collision between different particles make the particles broken up after being thrown out. With the increase of rotor speed and rotor diameter, the crushing rate increased; while with increase of the feed rate, the crushing rate decreased; with the increase of feed particle size, the crushing rate increased at first and then decreased. In addition, with the increase of rotor speed, rotor diameter and feed rate, the rotor power would increase greatly while the feeding particle size had no effect on rotor power; the simulation rotor power was basically consistent with the actual rotor power. Considering the crushing rate comprehensively, when rotor speed was 1 600 r/min, rotor diameter was 1 100 mm, feed particle was 30 mm and feed rate was 160 t/h, this set of parameters was optimal in this paper.
- References:
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Last Update:
2021-12-17