The recovery of clean coal can be improved through grinding. In this study, grinding and flotation experiments were conducted on difficult-to-float coal. Results show that the particle size obtained from ball milling is finer than that obtained from rod milling. However, the particle
size distribution obtained from rod milling is more evenly distributed than that obtained from ball milling. The contact styles of steel rod and steel ball are “line contact” and “point contact,” respectively. Results from the flotation experiments are consistent with
those from the orthogonal experiments.
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Document Type: Research Article
School of Materials Science and Engineering, Henan Polytechnic University, Jiaozuo, China
School of Chemical Engineering and Technology, China University of Mining and Technology, Xuzhou, China
Coal Quality Supervision and Test Station, Anhui Province Coal Science Research Institute, Hefei, China
April 17, 2016