【導(dǎo)讀】廠，采用了大型選煤設(shè)備；同時采用精確的選煤方法和分選分級設(shè)備及過程控制；東石圪臺、神東大柳塔等選煤廠的設(shè)計實踐中。所建選煤廠的主要特征反映在兩個方面：一是建設(shè)規(guī)模大、數(shù)量多，這表明中國選煤廠的設(shè)計和建設(shè)已達(dá)到國際先進(jìn)水平。中國選煤廠的設(shè)計現(xiàn)狀，可以用“大型、精確、簡單、實用”來概括?！按笮汀本唧w表現(xiàn)為大型選煤基地、大型選煤廠、大型選煤設(shè)備。煉焦煤選煤廠的建設(shè)規(guī)模也比l0A前有所增長，其。中，霍州煤電集團年入洗原煤能力已達(dá)到。其中最大的動力煤選煤廠為平朔安家?guī)X選煤廠，年人洗原煤能力達(dá)。目前生產(chǎn)實際中成。介質(zhì)立輪、斜輪分選機因其設(shè)備龐大難于大型化。減少浮選人料量，降低生產(chǎn)成本。設(shè)備的大型化使得設(shè)備配置簡單化成為可能。的使用壽命及可靠性，進(jìn)而取消了備用或冗余的工藝系統(tǒng)及設(shè)備。來裝備大型及特大型選煤廠，應(yīng)當(dāng)沒有問題。其自身的適用范圍。試驗表明，HW系列重介質(zhì)。近幾年來，中國每年都要設(shè)計、新建或改造數(shù)十座選煤廠。

　　

【正文】 Ad=～％， St,d = ％； washed fines for power plants， Ad≤40％， St,d≤％ .Main equipment include： Ф1200/ 850 threeproduct HM cyclone on unpressurized feeding，3675 linear vibration screen， VM 1400 dewatering centrifuge， FC1200m dewatering centrifuge for slime， magic separator， 96m2 hyperbaric filter。 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。 treated by shallow HM bath：overflow stream after demedium screened at 50(25)mm； 200～ 50(25)for sales as clean 1ump or crushed down to minus 50mm and bined with the dewatered undersize 50mm as undersize is deslimed and the 13～ fraction is treated by large diameter HM cyclone for refilse discard： the ～ mm fraction treated by spiral separator also for refuse discard： two clean coals bined as mixed slime dewatered by centrifuge and fine slime，after hyperbaric filtering， bined with mixed value(Q )of main coal products are： clean lump≥， washed fines≥mixed coal≥， screened mixed coal≥lump≥Main equipment employed include： SLR2461 heavyduty singledeck rod screen singledeck banana screen， 3636RB crusher， 3684RB crusher， 36 48RB135 122054 HM separator for lump coal，HCDMΦ1150mm HM cyclone for fine doubledick banana singledick banana centrifuge for 4turnspiral centrifuge for highfrequency highemcient ， GPJ120 hyperbaric such equipment was imported thin main plant building two production systems were construction was modular steel structure. Daliuta CCP is the largest jig plant in China with a capaci tv of 5000t/ which 2020～ 2300t/h is for cleaning cleaning circuit is simple： +13mm cleaned by jigging and–13mm not coal contains ash 5％～ 7％ . heat valtie≥≥as 35m2 BATAC jig， 120m2 hyperbaric centrifuge， and 2460 attained is ： separation sharpness of jig， I=～ ， quantitative eficiency 99％ .production cost about 86％ that by HM are 78 working labors for plant operation. Special feature of this plant is its outstanding and reliable automatic control system， in which most equipment are involved， leading to high administration platform and spot monitoring system were newly designed， enabling multiprotection and deepening control； vibration and temperature of each equipment involved are reflected by the spot monitoring plete automatic control system， dispositi on of personnel with posite talent and integration of maintenance and operation， the working force is reduced and productivity increased. To sum up， coal preparation plant design in accordance with the line of ―largescale， accuracy， simplicity and adoptability‖not only increases collective productivity and reduces production cost but also reduces investment and shortens construction construction time of a plant is about one 30～ 60 RMB/ cost 10～ 20 RMB/t. Such coal preparation plant design meets the requiIment of both stateown and private enterprise. It pmmotes much private capital tuming to invest coa1 prepamtion industry and a climax of preparation p1ant constmction is taking shape.