Abstract Vibration sorting is a common means in separating non-spherical particles from spherical particles. In this paper, the discrete element method (DEM) is applied to simulate the behavior of spherical particles and non-spherical particles motion on an inclined vibrating plate (IVP), and the influence of different operating parameters on the separation performance of the mixed particles is investigated. In the DEM simulations, both the spherical and non-spherical particles are modeled by super-ellipsoids. The simulation results show that the optimal vibration amplitude and frequency exist for the high separation efficiency of the mixed particles. The separation efficiency can also be enhanced by properly increasing the friction coefficient or decreasing the restitution coefficient between particles and plate. It is easier to separate the non-spherical particles from the spherical particles by diminishing the sphericity of particles. Besides, as long as the inclination angle of the plate is set at appropriate range and the feed rate of the mixed particles is moderate, the non-spherical particles can be separated effectively from the spherical particles. This research could be helpful for the understanding and optimal design of vibration sorting device.

中文翻译：

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基于DEM模拟的非球形颗粒振动分选研究

摘要 振动分选是分离非球形颗粒和球形颗粒的常用手段。本文采用离散元法（DEM）模拟球形颗粒和非球形颗粒在倾斜振动盘（IVP）上的运动行为，以及不同操作参数对混合颗粒分离性能的影响。被调查。在 DEM 模拟中，球形和非球形粒子均由超椭球建模。模拟结果表明，对于混合颗粒的高分离效率，存在最佳的振动幅度和频率。适当增加摩擦系数或降低颗粒与板之间的恢复系数也可以提高分离效率。通过减小颗粒的球形度，更容易将非球形颗粒与球形颗粒分离。此外，只要将板的倾角设置在适当的范围内，混合颗粒的进料速度适中，就可以有效地将非球形颗粒与球形颗粒分离。本研究有助于对振动分选装置的理解和优化设计。