Abstract: Based on the characteristics of 4^# and 5^# raw coal in Zhongxin coal mine,analyzed the problems of application of traditional pump-fed dense medium cyclone in Zhongxin coal preparation plant,the reform was done on the dense medium cyclone.The paper introduced the structure,working principle of the dual cone pump-fed three product dense medium cyclone,also described the application result of the dual pump-fed dense medium cyclone after the reformation.