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Insights in active pulsing air separation technology for coarse coal slime by DEM-CFD approach

期刊名称：J. Cent. South University
时间：2013.12.12
页码：3660-3666
分类：TQ116.11[化学工程—无机化工] TD942.62[矿业工程—选矿]
作者机构：[1]School of Chemical Engineering and Technology, China University of Mining and Technology, Xuzhou 221116, China
相关基金：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
相关项目：颗粒在脉动气流场中分离机理及脉动气固两相流动力系统研究

关键词：空气分离技术, 粗煤泥, CFD方法, 脉冲, 空气分级机, 模拟方法, 粒子运动, 气固两相流, pulsing air, coarse coal slime, DEM-CFD, separation

中文摘要：

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.

英文摘要：

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.