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Digital Library of the
European Council for Modelling and Simulation |
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Title: |
Design
Optimization Of High Energy Ball Mills By Discrete Event Simulation |
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Authors: |
Roland Reichardt,
Wolfgang Wiechert |
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Published in:
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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 |
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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. |
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DOI: |
http://dx.doi.org/10.7148/2007-0415 |
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Abstract: |
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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