矸石易泥化高灰原煤重介质分选工艺研究

Research on heavy media separation process for high-ash raw coal with gangue easily-mudding

介绍了矸石易泥化高灰原煤重介质分选的技术基础,制作了新型旋流器的试验模型,试验研究取得了理想的分选效果,探索了矸石易泥化高灰原煤重介质分选工艺的工业应用可行性。利用FLUENT软件对新型旋流器的速度场进行数值模拟,通过流场的数值模拟观察了重介质旋流器的理论分选过程,为旋流器参数优化、结构改进提供了经济高效的途径,揭示了矸石易泥化高灰原煤分选旋流器能够实现高效分选的机理,从而为旋流器的工业应用奠定了基础。

This paper introduces the technical basis of heavy media separation process for high-ash raw coal with gangue easily-mudding. A test model of the new heavy media cyclone is made and an ideal separating effect is obtained. The practical feasibility of the process is explored. The FLUENT software is used to do a numerical simulation on the speed field of the new cyclone and its separation process is observed. It provides economical and high-effective way for parameter optimization and structural improvement of cyclone. It also reveals the efficient sorting mechanism of the separating cyclone for high-ash raw coal with gangue easily-mudding and establishes a foundation for the industrial applications of the cyclone.