Abstract
To research a novel technology for dry coarse coal slime beneficiation and extend its application, active pulsing air separation technology was investigated by DEM-CFD coupling simulation approach. The results show that the ash content of feed is reduced by 10%–15% and the organic efficiency is up to 91.78% by using the active pulsing air separation technology. The gas-solid flow in the active pulsing air classifier was simulated. Meanwhile, the characteristics of particle motion and the separation process of different particles were analyzed, and the mechanical structure of the classifier was also modified to achieve high separation efficiency. Therefore, a novel high-efficiency dry beneficiation technique was advanced for coarse coal slime.
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Foundation item: Projects(51221462, 51134022, 51074156) supported by the National Natural Science Foundation of China; Project(2012CB214904) supported by the National Basic Research Program of China; Project(20120095130001) supported by Specialized Research Fund for the Doctoral Program of Higher Education, China
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Dong, L., Zhao, Ym., Xie, Wn. et al. Insights in active pulsing air separation technology for coarse coal slime by DEM-CFD approach. J. Cent. South Univ. 20, 3660–3666 (2013). https://doi.org/10.1007/s11771-013-1893-0
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DOI: https://doi.org/10.1007/s11771-013-1893-0