DEM simulation of particle flow on single deck banana screen

ZHAO Lala; LIU Chusheng; DONG Hailin

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DEM simulation of particle flow on single deck banana screen

ZHAO Lala 1 * #,LIU Chusheng 2,DONG Hailin 2

1. School of Mechanical and Electrical Engineering, China University of Mining & Technology, JiangSu XuZhou 221116

2.School of Mechanical and Electrical Engineering, China University of Mining & Technology, Xuzhou 221116

*Correspondence author

#Submitted by

Subject:

Funding: the Specialized Research Fund for the Doctoral Program of Higher Education of China （No.No.20110095120004）

Opened online:21 January 2012

Accepted by: none

Citation: ZHAO Lala,LIU Chusheng,DONG Hailin.DEM simulation of particle flow on single deck banana screen[OL]. [21 January 2012] http://en.paper.edu.cn/en_releasepaper/content/4461847

This paper presents a mathematical study of particle flow on a banana screen deck using the discrete element method (DEM). The motion characteristics and penetrating mechanisms of particles on the screen deck are studied. Effects of geometric parameters of screen deck on banana screening process are investigated. The results show that when the values of inclination of discharge and increment of screen deck inclination are 10 and 5 respectively, the banana screening process get a good screening performance in the simulation. The relationship between screen deck length and screening efficiency is further confirmed. The conclusion that the screening efficiency will not significantly increase when the deck length L≥430mm（L/B≥3.5）is obtained, which can provide theoretical basis for the optimization of banana screen.

Keywords:mineral processing engineering; banana screen; particle flow; discrete element method; numerical simulation

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