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©1994-2010ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.(,201900):FINEXFINMETCircoredHIsmelt,,4:80080%DRI;,20%;;:;;;ApplicationoffluidizationtechnologytosmeltingreductionprocessZHAOHuasheng,WANGChen,LIZhaoyi,ZHOUYusheng(BaoshanIron&SteelCo.,Ltd.,Shanghai201900,China)Abstract:ThispaperintroducesthetechnologiesandcharacteristicsoftheironoretreatmentbyfluidizedbedinseveraltypicalsmeltingreductionprocessessuchasFINEX,FINMET,CircoredandHIsmelt.Therulesoffineironoretreatmeatbyfluidizedbedinsmeltingreductionaresummedup.Takingforreferenceforeignanddomesticpracticeoffineironoretreatmentwithfluidizedbeds,thispaperproposesanewsmeltingreductionironmakingprocesswithfineironoretreatmentbyfluidizedbed.Theprocessisdivided,inaccordancewithitsmetallurgicalfeatures,intofoursystems,includingthefluidizingpreheatingreductionsystemwhichusesreducinggasatabout800toproduceDRIatareductionratioof80%;theiron2bathfinalreductionsystemwhichdirectlyusespowderedcoal,furnaceburdenathightemperatureandhighpre2reductionratioandpureoxygentocontrolthepost2combustionratioatabout20%;thegasreformingsystemwhichadjustsandtransformsthehightemperaturereducinggasandrecyclesthetopgas;thecomprehensiveutilizationsystemwhichmakesuseoftheoutputgas.Keywords:fluidizedbed;fineironore;directreduction;smeltingreduction0[1],20,[2],VAI-POSCOFINEX()FIOR-VAIFINMET()RioTintoHIsmelt()OutokumpuCircored(),DIOS[3],,-,,,,,16©1994-2010ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.:,,,[4]11.2HIsmeltDIOS[5,6]HIsmelt2,2HIsmelt7©1994-2010ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.(DRI)(HBI)[7],FINEX()CircoredFINMET[8-10]FINMET,12mm,(4),550,800,1.11.3MPa91%92%,0.5%3.0%,8©1994-2010ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.(HBI),,,FINEX(6),8mm,DRI5Circored9©1994-2010ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.(),41%CO2,CO233%3%,R1,,FINMET,FINEX50%70%,,,7m1.41,FINEXFINMETCircored,HIsmeltDIOS,HIsmelt,,1FINEXHIsmeltDIOSFINMETCircored/(ta-1)150801822050/%7090811(25)203093959598/MPa0.20.30.10.31.11.30.4/mm8661298008008508008509002FINEX,POSCOFINMETCorex,,HIsmeltDIOS,,,80%800,01©1994-2010ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.(),,;,,,,,,,,(),,,,,,,,,,(800)(80%),,,,,,FeO,,FeOFeO12,,,,20%,,,,,,7711©1994-2010ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.(1),FINEXFINMETCircoredHIsmelt(2),(CorexFINEX),(3),[1].FINEX[EB/OL].(2007-06-04).[2],,,.[J].,1999,24(6):28-30.[3].[D].:,2008.[4].[J].,1985,20(7):52-56.[5].[J].,2005(1):1-9.[6]MinoruIshikaiwa.DIOS[J].,1997(1):15-20.[7],,,.[J].,2007,42(11):17-20.[8]JohanesL,Schenk,LeeHG.FINEX2fromFineoretohotmetal[C]InnovationsinIronmakingSessionof2006InternationalSymposium,Austria,2006:1-5.[9]WolfgangBresser,PeterWeber.CircoredandCircofer:Stateofthearttechnologyforlowcostdirectreduction[J].IronandSteelEngineer,1995:81-85.[10]GerhardDeimke.FINMET[J].,2000,35(12):13-15.(5),6,,,[1]ShigeyukiHirose,HideyoSugawara,SyuichiTaniyoshi.Blastfurnaceburdendistributioncontrolwith32parallelbunkerbell2lesstopusinglargeamountofsmallsinter[J].KawasakiSteelTechnicalReport,1995,32:3-8.[2],.[J].JFE,2008,22:44-48.[3]WatakabeS,TakedaKJ,NishimuraH.Developmentofhighratiocokemixedchargingtechniquetotheblastfurnace[J].ISIJInternational,2006,46(4):513-522.[4]WatakabeS,MuraoA,GotoS.Applicationofhighratiocokemixedchargingtechniquetoblastfurnace[J].JFETechnicalReport,2009,13:21-27.[5].,2008-240028.21