中国主要干法选煤机的研究与应用

综述了国内外干法选煤设备的发展状况,并对国内现有的3种主要干法选煤设备——CFX型差动式干选机、FX型俄式干选机和FGX型复合式干选机的主机结构、工作原理等进行了分析。阐述了激振器的冲程冲次、振动力方向与给料方向的关系、床面及床面隔条高度等对干法选煤设备分选效果的影响,说明CFX型差动式干选机具有动力消耗小、处理能力大、对入料外水适应性强及设备投资少等优点,并对干法选煤机整体性能与结构、配套设备选型之间的关系提出了全面认识。最后对3种干法选煤设备的应用效果进行了分析,说明CFX-12型差动式干选机在同类产品中分选效果最好,Ep值最小为0.17,不完善度I为0.085,处理能力最大为100～150 t/h,动力消耗最小为11 kW。 Summarize the development of dry coal preparation machines at home and abroad.Analyse the main engine,working principle of CFX differential separator,FX Russian separator,FGX combined separator,which are widely used in China.Introduce the influence of stroke frequency of vibrator,relationship between vibration direction and feeding direction,bed surface,height of parting strip on separation effect.The results show that,with the leastest investment,the CFX differential separator consumes the least energy,has the largest processing capacity and strongest adaptability to moisture of feed coal.Investigate the connection between performance of separator and structure,matching equipments selection.The analysis of these three separators show that the CFX-12 differential separator performs best,the minimum Ep value is 0.17,the imperfection is 0.085,the maximum processing capacity is between 100 t/h and 150 t/h,the minimum energy consumption is 11 kW