Abstract
This paper presents a numerical study on the effect of aperture shape on particle flow and separation in a vibrating screen process. A three-dimensional discrete element method (DEM) model is developed to simulate vibrating screens with rectangular apertures of different aspect ratios and orientations. Based on the model, the effect of aperture shape on the sieving process is studied through a series of controlled numerical experiments. The sieving performance is analysed in terms of overall percentage passings of different sized particles and the distribution of percentage passings along the screen deck. In addition, the sieving behaviour of individual particles is analysed based on the microdynamics information, particularly the particle-screen interactions. On this basis, the probability of a single attempt and the number of attempts for a particle to pass an aperture are modelled for different shaped apertures, which are linked to the macroscopic sieving performance. The results are useful for developing a fundamental understanding of the effect of aperture shape on screening, which will help design, control and optimise practical processes.
| Original language | English |
|---|---|
| Pages (from-to) | 195-202 |
| Number of pages | 8 |
| Journal | Powder Technology |
| Volume | 314 |
| DOIs | |
| Publication status | Published - 1 Jun 2017 |
Keywords
- Aperture shape
- Computer simulation
- Discrete element method
- Sieving
- Vibrating screen
Cite this
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Discrete particle simulation of particle flow and separation on a vibrating screen : Effect of aperture shape. / Dong, Kejun ; Esfandiary, Amir Hossein; Yu, Aibing.
In: Powder Technology, Vol. 314, 01.06.2017, p. 195-202.Research output: Contribution to journal › Article › Research › peer-review
TY - JOUR
T1 - Discrete particle simulation of particle flow and separation on a vibrating screen
T2 - Effect of aperture shape
AU - Dong, Kejun
AU - Esfandiary, Amir Hossein
AU - Yu, Aibing
PY - 2017/6/1
Y1 - 2017/6/1
N2 - This paper presents a numerical study on the effect of aperture shape on particle flow and separation in a vibrating screen process. A three-dimensional discrete element method (DEM) model is developed to simulate vibrating screens with rectangular apertures of different aspect ratios and orientations. Based on the model, the effect of aperture shape on the sieving process is studied through a series of controlled numerical experiments. The sieving performance is analysed in terms of overall percentage passings of different sized particles and the distribution of percentage passings along the screen deck. In addition, the sieving behaviour of individual particles is analysed based on the microdynamics information, particularly the particle-screen interactions. On this basis, the probability of a single attempt and the number of attempts for a particle to pass an aperture are modelled for different shaped apertures, which are linked to the macroscopic sieving performance. The results are useful for developing a fundamental understanding of the effect of aperture shape on screening, which will help design, control and optimise practical processes.
AB - This paper presents a numerical study on the effect of aperture shape on particle flow and separation in a vibrating screen process. A three-dimensional discrete element method (DEM) model is developed to simulate vibrating screens with rectangular apertures of different aspect ratios and orientations. Based on the model, the effect of aperture shape on the sieving process is studied through a series of controlled numerical experiments. The sieving performance is analysed in terms of overall percentage passings of different sized particles and the distribution of percentage passings along the screen deck. In addition, the sieving behaviour of individual particles is analysed based on the microdynamics information, particularly the particle-screen interactions. On this basis, the probability of a single attempt and the number of attempts for a particle to pass an aperture are modelled for different shaped apertures, which are linked to the macroscopic sieving performance. The results are useful for developing a fundamental understanding of the effect of aperture shape on screening, which will help design, control and optimise practical processes.
KW - Aperture shape
KW - Computer simulation
KW - Discrete element method
KW - Sieving
KW - Vibrating screen
UR - http://www.scopus.com/inward/record.url?scp=85006323950&partnerID=8YFLogxK
U2 - 10.1016/j.powtec.2016.11.004
DO - 10.1016/j.powtec.2016.11.004
M3 - Article
VL - 314
SP - 195
EP - 202
JO - Powder Technology
JF - Powder Technology
SN - 0032-5910
ER -