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

Publication history: Received February 5, 2002
Accepted October 31, 2002

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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Ultra-Fine Grinding Mechanism of Inorganic Powders in a Stirred Ball Mill - The Effect of Grinding Aids -

Hee Kyu Choi¹ Woo Sik Choi^{1 2†}

¹Interdisciplinary Program in Powder Technology, Pusan National University, Busan 609-735, Korea ²Department of Pharmaceutical Manufacturing,, Pusan National University, Busan 609-735, Korea

wschoi@pusan.ac.kr

Korean Journal of Chemical Engineering, May 2003, 20(3), 554-559(6), 10.1007/BF02705565

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Abstract

An experimental investigation on grinding mechanism for calcite used in a stirred ball mill was carried out. The slurry concentration and the amount of grinding aids were chosen as main experimental factors of the grinding process. The effect of grinding aids on particle size distribution and grinding efficiency, defined as the increases of specific surface area per the specific grinding energy, was investigated. It was demonstrated that the grinding rate for calcite could be improved by addition of grinding aids. The grinding energy efficiency by adding a specific grinding aids was improved approximately 45.2% in comparison with and without grinding aids (n=700 rpm, J=0.7, dB=1.0 mm, Cs=60 wt%).

Keywords

Stirred Ball Mill Grinding Mechanism Grinding Energy Consumption Grinding Aids

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