Study on Impact of Vibration Direction on Linear Vibration Screening Effect

Abstract:

Based on Hertz-Mindlin contact model in software EDEM by discrete element method, using linear vibrating screen 360 mm×600 mm, movement characteristics of particle group on sieve plate and law of particles going through sieve plate were studied in screening process of coal in certain conditions, which were as follows: dip angle was 0 °, amplitude was 5 mm, frequency was 11 Hz. The simulation test results show that there are important influences of vibration direction on screening process. And influence law of vibration direction on screening effect was revealed finally. The paper also gained mathematical model between particle group’s screening efficiency and vibration direction angle, and mathematical models of particles easy or hard to sieve and material between average movement speeds and vibration direction angle.

• Periodical: Applied Mechanics and Materials (Volumes 226-228)
• Pages: 186-190
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.226-228.186
• Online since: November 2012
• Authors: Yue Min Zhao, Ke Wang, Liang Dong, Bo Zhang, Xu Liang Yang, Zai Sheng Zhu
• Keywords: Discrete Element Method (DEM), Movement Speed, Screening Efficiency, Vibration Direction Angle

References

[1] F. Yan: Sieving Machinery (Coal Industry Press, China 1995). (In Chinese)

[2] G.Q. Wang: Virtual Experiment Technology (Electronic Industry Press, China 2004). (In Chinese)

[3] Y. Xu, Sun Qicheng, Zhang Ling, etc: Advances in Mechanics, (2003) No.2, p.251 (In Chinese)

[4] H.P. Zhu, Z.Y. Zhou, R.Y. Yang, et al: Chemical Engineering Science, Vol. 62 (2007) No.13, p.3378

[5] B.K. Mishra, S.P. Mehrotra: Mineral Processing, Vol. 63 (2001) No.4, p.177

[6] B.N. Asmar, P.A. Langston, A.J. Matchett, et al: Computers and Chemical Engineering, Vol. 26 (2002) No.6, p.785

[7] P.W. Cleary and M.L. Sawley: Applied Mathematical Modelling, Vol. 26 (2002) No.2, p.89

[8] W.R. Ketterhagen, J.S. Curtis, C.R. Wassgren, et al: Chemical Engineering Science, Vol. 62 (2007) No.22, p.6423

[9] J. Li, C. Webb, S.S. Pandiella, et al: Transactions in Chemical Engineering, Vol. 80 (2002) No.2, p.109

[10] J.K. Dong, A.B. Yu, I. Brake: Minerals Engineering, Vol. 22 (2009) No.11, p.910

[11] H.G. Jiao, Y.M. Zhao, Q.Q. Wang: Journal of China University of Mining & Technology, Vol. 16 (2006) No.2, p.137 (In Chinese)

[12] Y.H. Chen and X. Tong: Mining Science and Technology, Vol. 19 (2009) No.4, p.493

[13] G.M. Hu: Analysis Simulation of Particles System by Discrete Element Method (Wuhan University of Technology Press, China 2010). (In Chinese)

[14] R.D. Mindlin: Compliance of Elastic Bodies in Contact. J.Appl.Mech.Trans.,ASME, Vol. 71 (1949) p.259

[15] Y. Tsuji, T. Tanaka, and T. Ishida: Powder Technology, Vol. 71 (1992) p.239