The SMC (two product coal slime dense medium cyclone) and TSMC (three product coal slime dense medium cyclone) from Haiwang Company have been widely applied in Shandong, Shanxi and Shanxi etc some coal separation plants within China. Among that, the upper limit of coal slime dense medium cyclone can reach 2mm and the separation efficiency is relatively high with the capacity covering from 10 to 100 t/h.