ZHOU Youhang, WU Chong, YANG Wenjia, ZOU Xin, YAN Songxiang, ZHONG Chui

(School of Mechanical Engineering and Mechanics, Xiangtan University, Xiangtan 411105, China)

Abstract：To screen a wide range of particle sizes of seafoam particle products, a gravity classifier was designed. The gas and seafoam particles form a gas-solid two-phase fluid to establish an Eulerian-Lagrangian two-phase model to solve the kinematic characteristics of the classification process of seafoam particles. By analyzing the motion characteristics of seafoam particles such as trajectory and position and the particle size distribution at the exit of each level, the interval distribution of the exit of each level was determined. The results show that the smaller the particle size of the seafoam particles is the more they are affected by the graded airflow. The grading interval of particles is divided by analyzing the positions of seafoam particles with different particle sizes at different moments. According to the particle size distribution at the exit of each level, seafoam particles from 1 μm to 10 μm show more concentrated particle size distribution and better monodispersity.

Keywords：gravity classification; seafoam particles; multi-grain size; gas-solid two-phase flow; numerical simulation

Get Citation：ZHOU Y H, WU C, YANG W J, et al. Numerical simulation of gravity classification of sepiolite particles[J]. China Powder Science and Technology, 2023, 29(6): 16-26.

DOI：10.13732/j.issn.1008-5548.2023.06.002

Received：2023-06-21,Revised：2023-08-17,Online：2023-10-09 10:05。

Funding Project：国家自然科学基金项目,编号:52175254;湖南省研究生科研创新项目,编号:CX20220603。

First Author：周友行(1971—),男,教授,博士,博士生导师,研究方向为数字化设计与制造。E-mail: zhouyouhang@xtu.edu.cn。

CLC No：TB44

Type Code：A

Serial No：1008-5548(2023)06-0016-11