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Journal of Ceramic Science and Technology

The Journal of Ceramic Science and Technology publishes original scientific articles on all topics of ceramic science and technology from all ceramic branches. The focus is on the scientific exploration of  the relationships between processing, microstructure and properties of sintered ceramic materials as well as on new processing routes for innovative ceramic materials. The papers may have either theoretical or experimental background. A high quality of publications will be guaranteed by a thorough double blind peer review process.

The Journal is published by Göller Verlag GmbH on behalf of the Deutsche Keramische Gesellschaft (DKG). Edited by Yu-Ping Zeng, Shanghai Institute of Ceramics, Chinese Academy of Sciences, China.

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A Kinetic Study of Limestone Dry Micronization in an Ultra-Centrifugal Mill with Peripheral Comminuting Path

D. Radulović1, D. Božović2, A. Terzić3, M. S. Trumić4, V. Simić5, L. Andrić1

1 Institute for Technology of Nuclear and Other Mineral Raw Materials, Belgrade, Serbia
2 Geological Survey, Podgorica, Montenegro
3 Institute for Testing of Materials IMS, Belgrade, Serbia
4 University of Belgrade, Technical Faculty, Bor, Serbia
5 University of Belgrade, Faculty of Mining and Geology, Belgrade, Serbia

received March 22, 2017, , accepted May 30, 2017

Vol. 8, No. 2, Pages 295-304   DOI: 10.4416/JCST2017-00022

Abstract

Because of its physico-mechanical and physico-chemical characteristics, fine-ground (i.e. micronized) limestone is widely applied in the production of new materials. Limestone can be used as a filler, coating and/or powder in ceramic composites. The effect of its fine micronization depends on the type of equipment used and on the disintegration process. In this study, the emphasis was placed on investigation of the kinetics of the dry micronization milling of limestone in a state-of-the-art ultra-centrifugal mill with a peripheral comminuting path. The efficiency of the ultra-centrifugal mill with a peripheral comminuting path was determined based on a detailed investigation of the limestone dry micronization, which satisfied all the requirements for technological parameters as well as for micronized product parameters. On the basis of the investigation of these parameters and theory of dry micronization conducted in a state-of-the-art mill with use of advanced instrumental techniques for determination and observation of the most significant physical and chemical characteristics, a kinetics model was developed to serve as the basis for quick and effective determination of micronization quality and efficiency. In this paper, the results of grinding in a Retsch ZM-1 ultra-centrifugal mill were analyzed in order to optimize and automate the process of ultrafine micronization.

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Keywords

Limestone, fillers for ceramics, mechano-chemical activation, grinding, optimization.

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