A Numerical Study of Separation Performance of Vibrating Flip-Flow Screens for Cohesive Particles
Abstract
:1. Introduction
2. Simulation Methods
2.1. Contact Model of Particles
2.2. The DEM Model Setting of VFFS
2.3. Simulation Conditions
3. Effect of Surface Energy Level on Separation Performance
3.1. The Yield of Each Section of VFFS
3.2. The Yield Accounted for Size Fraction in Different Sections
3.3. The Screening Percentage of Different Size Fractions of Different Sections
3.4. The Screening Performance of Various Size Fractions in Different Sections and Screen Length
4. Conclusions
Author Contributions
Funding
Data Availability Statement
Acknowledgments
Conflicts of Interest
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Intercepted Order M | M = 1 | M = 2 | M = 3 | M = 4 | M = 5 |
---|---|---|---|---|---|
Maximum amplitude (mm) | 23.23 | 28.10 | 28.79 | 29.37 | 29.88 |
RE (%) | 17.19 | 2.63 | 2.0 | 1.57 | 1.10 |
MSE | 13.06 | 0.99 | 0.59 | 0.40 | 0.20 |
Material Property | Poisson’s Ratio (-) | Shear Modulus (Pa) | Density (kg/m3) |
---|---|---|---|
Particle | 0.250 | 2.200 × 108 | 2456 |
Polyrethane | 0.499 | 1.157 × 106 | 1200 |
Steel | 0.300 | 7.692 × 1010 | 7850 |
Collision property | Coefficient of restitution | Coefficient of static friction | Coefficient of rolling friction |
Particle-particle | 0.50 | 0.154 | 0.10 |
Particle-polyrethane | 0.25 | 0.500 | 0.01 |
Particle-steel | 0.30 | 0.154 | 0.01 |
VFFS parameters | |||
Vibration parameter | The vibration frequency of 776 r/min, screen inclination of 15° | ||
Screen parameters | Screen length and width with 2624 and 650 mm, respectively | ||
Material properties | The total mass of 5.81 kg |
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Yu, C.; Geng, R.; Wang, X. A Numerical Study of Separation Performance of Vibrating Flip-Flow Screens for Cohesive Particles. Minerals 2021, 11, 631. https://doi.org/10.3390/min11060631
Yu C, Geng R, Wang X. A Numerical Study of Separation Performance of Vibrating Flip-Flow Screens for Cohesive Particles. Minerals. 2021; 11(6):631. https://doi.org/10.3390/min11060631
Chicago/Turabian StyleYu, Chi, Runhui Geng, and Xinwen Wang. 2021. "A Numerical Study of Separation Performance of Vibrating Flip-Flow Screens for Cohesive Particles" Minerals 11, no. 6: 631. https://doi.org/10.3390/min11060631