【正文】 tion operations are very simple。 example . For speedy realization of clean coal utilization in recent decade， construction of coal preparation plant in China surges to a new special features are reflected in two respects： large quantity of plants constructed， advanced technology and equipment employed， and high production eficiency achieved in one side； and the other construction time shortened， investment and production cost remarkably reduced， thence， coal preparation plant design and construction in China has reached an international paper gives an introduction with ments. 1 . Status of coal preparation plant design Status of coal preparation plant design can be summarized as being of―largescale accuracy， simplicity and adoptability‖. ―Largescale‖rears to coal preparation capacity and equipment throughput. Largescale coal preparation bases take shape concurrently with setting up of large coal productive steam coal bases include Shendong (Shendong，Zhunger)， Northem Shanxi(Datong， Pingshuo)， Southeastern Shanxi (Yangquan，Jincheng) ， Lianghuai (Huainan ， Huaibei ， Yongcheng) ， Northeastern and coking coal bases include Central Shanxi (, Huozhou, Xiangning) ， Western Shandong(Zaozhuang ， Yanzhou),Central Hebei(Kailuan,Fengfeng,Xingtai) and Northeastern. Speedy development of steam coal preparation is the main feature of plant design and which Pingshuo Coal a coal preparation with capacity up to 85Mt/a. Scale of plant construction for coking coal also enlarges conpared with last which Huozhou Coalamp。 one for exportation by other for domestic sale by refuse separation process employed： hallow bath with scrapper for treating 150～ 13mm lump cyclone for 13～ fine products and their quality are： the clean coal (qualified steam coa1)for exportation， ash Ad ≤14％， sulfur St,d≤1％， heat value Qgr,v,ad ≥； the washed coal mix for general domestic sale， Ad ≤35％， St,d ≤1％， Q,ar ≥； the mixed coal(qualified mixed coa1)for domestic power plants，Ad≤22％， St,d ≤％， Q,ar ≥Equipment employed in its first stage construction included： W22F54 shallow bath HM scrapper cyclone， MMD1050 and MMD625 ’24’ classification screen， HVS10’16’demedium screen. HSG1 100 and H900C classifying cy clone， Φ36‖117‖magic separator. Φ50m hyperbaric filter ， 5000t/h express loading sand pump， switch cabi， outdoor posite transformer control and measurement key equipment were advanced and large ones at the time of main plant building is of lowfloor steelconcrete frame has double coloredboard as outer walls. Continuous operation of this plant denotes that quality of coal products is performance is： separation sharpness of HM shallow bath E≤：and that of HM cyclone， E≤； coal cleaning efficiency ％； production cost ； magite consumption ； power consumption Φ45m thickener， 250 m2 hyperbaric filter with quickdischarge system. Its enlargement project will receive coal feed from seven processes include： HM cycloning 0n unpressurized feeding， rougher concentrate recleaned by s1imemedium sepamtion， slime notation after thickening， notation concentrate dewatered by hyperbaric lter fouowed by thermal drying， thickening of notation tailing fo1lowed by press liltering， slime water after secondary thickening being recirculated. Arrangement in main building will be three is0lated process systems, while others， two isolated systems， enabling treatmem of separate two feed coals. Key equipment as crusher. Demedium screen， centrifuge， and thickener wi11 be imported. Qualities of coal products will be： clean coal for coking plant in new industa1 park Ad ≤％～ ％， Mt ≤％ byproduct for power plant in the same， low heat value 3000kcal/kg. Shigetai CPP pleted in 2020 is tlle largest modular plant in China， treating raw coal of 12Mt/a， of whjch 10Mt/a being from its pit mine and 2Mt/a， flmm outside sources. Its opeIlation time is 5400h/a， and hourly capacity is 2222t/h. HM process is which 200 ～ 0mm raw coal screened at oversize + desliming。 coal feed includes fat coal，1/3 coking coal， main coking coal， gas coal， lean and meager and equipment i