Semi - Industrial roughing experiment of overflow from single - stage grinding - classification was carried out by use of cyclone - static micro - bubble flotation column in Shangxikeng Molybdenum Ore of Tianbao Mining Limited Company,Wuyi, Fujian. Based on the experiment and research,the effect of cyclonic - static micro - bubble flotation column on the recovery of molybdenum minerals under different conditions is discussed, and advantage of cyclonic - static micro - bubble flotation column in separating molybdenum minerals is analyzed.