Minerals 2018, 8(1), 18; https://doi.org/10.3390/min8010018
Breakage Characteristics of Heat-Treated Limestone Determined via Kinetic Modeling
1
Mineral Resources Research Division, Korea Institute of Geoscience and Mineral Resources, Daejeon 34132, Korea
2
DMR Convergence Research Center, Korea Institute of Geoscience and Mineral Resources, Daejeon 34132, Korea
3
Climate Change Mitigation and Sustainability Division, Korea Institute of Geoscience and Mineral Resources, Daejeon 34132, Korea
4
Resources Recycling, University of Science and Technology, Daejeon 34113, Korea
*
Author to whom correspondence should be addressed.
Received: 1 December 2017 / Revised: 29 December 2017 / Accepted: 9 January 2018 / Published: 12 January 2018
(This article belongs to the Special Issue Mineral Resources and the Environment)
Abstract
In recent years, heat treatment has attracted attention as a means to improve the color sorting technology with the aim of improving the quality of low-grade limestone. The crucial stage in this technique is to evaluate the breakage characteristics of the sample materials after color sorting. In this study, the breakage characteristics of samples showing color differences after heat treatment and of the original raw material were investigated using a laboratory ball mill. The grinding was characterized using the population balance model. Specific rates of breakage and the primary breakage distribution were experimentally determined by first-order kinetic plots and the BII method. The breakage parameters were also back-calculated by employing a simplex method. Grinding of the three materials indicated first-order kinetics, and the experimental results were well described by the model with parameters obtained by back-calculating. View Full-TextKeywords:
ball mill; limestone; population balance model; back calculation; grinding
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Lee, H.; Kim, K.; Kim, J.; You, K.; Lee, H. Breakage Characteristics of Heat-Treated Limestone Determined via Kinetic Modeling. Minerals 2018, 8, 18.
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