Abstract: With the promoting of coal resource integration and increasing of production capacity at Huozhou coal electricity group Co.,Ltd.,in order to adapt the demands of the new situation,the group company decided to made the technological renovation at Liyazhuang coal preparation plant to increase the raw coal processing capacity.after the completion of the technological renovation,the processing capacity at Liyazhuang coal preparation will increased to 3.30 Mt/a.The ＞50 mm raw coal separated with dense medium shallow bath separator and the 50-0.3 mm size fraction raw coal separated with double medium feeding gravity-fed three product dense medium cyclone.Preliminary estimate shows that after the renovation the plant will obtained significant economic and social benefits.