Digital Library

of the European Council for Modelling and Simulation



Design Optimization Of High Energy Ball Mills By Discrete Event Simulation


Roland Reichardt, Wolfgang Wiechert

Published in:


ECMS 2007 Proceedings

Edited by: Ivan Zelinka, Zuzana Oplatkova, Alessandra Orsoni


ISBN: 978-0-9553018-2-7

Doi: 10.7148/2007


21st European Conference on Modelling and Simulation,

Prague, June 4-6, 2007


Citation format:

Reichardt, R. (2007). Design Optimization Of High Energy Ball Mills By Discrete Event Simulation. ECMS 2007 Proceedings edited by: I. Zelinka, Z. Oplatkova, A. Orsoni (pp. 415-418). European Council for Modeling and Simulation. doi:10.7148/2007-0415.



High energy ball mills are used to grind powder material down to a particle size below one micron. Up to now, the detailed physical mechanisms of the grinding process inside the mill have not been fully understood. Hence, the design of these mills as well as their process parameters is based on empirical results. The ball mill has been simulated by discrete event simulation (DES) using typical process parameters to monitor the balls motion and their collisions. The DES method – if applicable – strongly outperforms typical DEM methods.

Furthermore parameter variations of the main process parameters have been made and the distribution of the balls impact velocities in normal direction has been analyzed, which is responsible for the grinding effect. Based on the new knowledge about the ball’s motion inside the grinding chamber and the probability distribution of the impact’s velocity, we developed a new grinding chamber. Its shape has been optimized by a computer simulation. The new design of the grinding chamber allows higher impact velocities and therefore finer powder of new mechanical alloyed powders.

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