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Conflict of Interest: In relation to this article, we declare that there is no conflict of interest.

Publication history: Received August 21, 2006
Accepted August 23, 2023

This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Analysis of ball movement for research of grinding mechanism of a stirred ball mill with 3D discrete element method

Seongsoo Kim Woo Sik Choi^1†

Dept. of Precision & Mechanical Engineering and Eco-Friendly Heat & Cooling Energy Mechanical Research Team, BK21, Gyeongsang National University, 445 Inpyeong-dong, Tongyoung, Gyeongnam 650-160, Korea ¹Dept. of Pharmaceutical Manufacturing, Pusan National University, Busan 609-735, Korea

wschoi@pusan.ac.kr

Korean Journal of Chemical Engineering, May 2008, 25(3), 585-592(8), 10.1007/s11814-008-0099-x

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Abstract

A simulation of the three-dimensional motion of grinding media in the stirred media mill for the research of grinding mechanism has been carried out by 3-dimensional discrete element method (DEM). The movement of ball assemblies was graphically displayed with some snapshots from start of the milling to 0.20 s. From these simulation results, the grinding zone in the mill was confirmed to be distributed into two regions, which is near the stirrer and the side wall of mill around the stirrer. The power changing the rotation speed of stirrer was examined based on the micro interactive forces at all the contact points between ball-to-ball and between ball-to-stirrer. DEM is a very powerful tool for the microanalysis of movement of balls, which could not have been solved by a conventional experimental method.

Keywords

DEM Computer Simulation Ball Movement Stirred Ball Mill Power Grinding Mechanism

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