The dry dense medium separator developed by the dry coal preparation engineering technology research center of Shenzhou Group in cooperation with China University of Mining and Technology has broken through the traditional water and wind coal preparation mode at domestic and abroad, and invented the modular dry dense medium fluidized bed high-efficiency dry coal preparation technology. It has strong uniform density and stability, small medium circulation, and large processing capacity per unit area. It is the first time to achieve high-precision dry coal separation at domestic and abroad.