Insights in active pulsing air separation technology for coarse coal slime by DEM-CFD approach
来源期刊：中南大学学报(英文版)2013年第12期
论文作者：DONG Liang(董良) ZHAO Yue-min(赵跃民) XIE Wei-ning(谢卫宁) DUAN Chen-long(段晨龙) LI Hao(李浩) HUA Cheng-peng(华成鹏)
文章页码：3660 - 3666
Key words：pulsing air; coarse coal slime; DEM-CFD; separation
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.
DONG Liang(董良), ZHAO Yue-min(赵跃民), XIE Wei-ning(谢卫宁), DUAN Chen-long(段晨龙), LI Hao(李浩), HUA Cheng-peng(华成鹏)
(School of Chemical Engineering and Technology, China University of Mining and Technology, Xuzhou 221116, China)
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.
Key words:pulsing air; coarse coal slime; DEM-CFD; separation
