XJM-S系列浮选机的研发及展望

Research,development and prospect of the XJM-S series flotation machine

浮选是目前细粒煤泥处理最有效、应用最广泛的方法。XJM-S系列浮选机在我国煤泥浮选设备中占有率最高,达70%以上。为使选煤同仁全面了解XJM-S系列浮选机技术特色、应用及发展,简述了XJM-S系列浮选机的工作原理、设计思路及其结构特点,回顾了该设备的研发历程,介绍了指导大型设备参数设计的放大准则,以及采用流场数值模拟对该设备结构的验证和优化;同时对比分析了目前生产中常用的XJM-S、XJM-K S、“3+2”系列浮选机的主要特点、现场应用情况以及XJM-S系列浮选机在低阶动力煤煤泥浮选提质中的应用效果。生产实践表明,XJM-S系列浮选机以设备运行可靠化为基础,通过槽体多样化配置和控制系统自动化提升,可实现浮选生产工艺的灵活化。最后,对XJM-S系列浮选机的发展趋势进行了展望。

Flotation process is currently the most efficient and widely used method for the treatment of fine coal.The use of the XJM series flotation cell accounts for the lion's share among the flotation equipment applied in China,which is estimated to be over 70%.In order to enable fellow workers to gain a deeper insight into the machine,the paper presents an outline of the working principle,design concept and structural features of the machine.Following a review of the process of the R&D of the machine,an introduction is made to the criteria for directing the scale-up of parameters in design of large-size ones.The structure of the machine is verified and optimized by means of flow field numerical simulation.Furthermore,a comparison is made of the main features,field application results and performance in upgrading of low-rank coal of the nowadays commonly used XJM-S,XJM_KS and“3+2”series flotation ma-chines.Result of field application shows while ensuring the reliabilty of the XJM series machine,the flotation process can be rendered more flexible through making diversified combination of cells and improve ment of automatic control system.Finally,the paper looks forward to the developing trend of the XJM-S series flotation machines.