高炉渣处理和热能回收的现状及发展方向

17620076ChinaMetallurgyVol.17,No.6June.2007:(50334020),(50574033),(2006DFA72080)`:(1982),,;Email:[e-mail];:20070117王海风,张春霞,齐渊洪(,100081):(INBA)(TYNA)(OCP)(RASA),,,:;;;:TF09:A:10069356(2007)06005306StatusandDevelopmentTrendofTreatmentandHeatRecoveryTechnologyforBlastFurnaceSlagWANGHaifeng,ZHANGChunxia,QIYuanhong(StateKeyLaboratoryofAdvancedSteelProcessingandProducts,CentralIronandSteelResearchInstitute,Beijing100081,China)Abstract:Themethodsofthetreatmentwiththeblastfurnaceslagbothinlandandoverseasatthepresenttime:INBA,TYNA,OCPandRASAwerecommented.Commentedtheheatrecycleresearchwhathasbeendonealreadyofblastfurnaceslag:thephysicalmethodandthechemicalmethodwerecommented.Nowthemethodoftreatmentwiththeblastfurnaceslagexiststheproblemsthatitconsumessomuchfreshwater,unreclaimingthephysicheatoftheslagandthecontaminationemissionsuchasSO2H2S,etc.Theresearchmethodofrecoverybastfurnaceslagheatdoesn'tconsidertheusingofthetreatedslag.Italsohastheproblemthattheequipmentwasconsumedquicklyandenergywasrecycledlowly.Thenewdevelopingmethodblastfurnaceslagdrygranulationcansolvetheproblemssuchastheblastfurnaceslaggranulationandtheheatrecycle.Itisthedeveloptrendoftheblastfurnaceslagtreatment.Keywords:blastfurnaceslag;treatment;heatrecycle;drygranulation(),,95%,,[1],,,1处理方法及存在问题1.11[2],,,,:,INBA(),TYNA(),,[3],,+OCP(),RASA():1Table1Maincomponentsrangeofblastfurnaceslag/%w(CaO)w(SiO2)w(Al2O3)w(MgO)R38~4430~388~155~101.05~1.2037~4135~4010~172~50.95~1.0538~4226~3011~192~91.30~1.50w(MnO)5%~10%43~4543~458~10~2~1.01.1.1(INBA)1,,;,,,1-;2-;3-;4-;5-;6-;7-;8-;9-;10-;11-;12-1INBAFig.1INBAflowchart,,,INBA,;INBA,;INBA2,INBA,INBA,1.1.2(TYNA)2,1-;2-;3-;4-;5-;6-;7-2TYNAFig.2TYNAflowchart1.1.3(COCP)3,,,(),,,1.1.4(RASA)4,,(),,[4]22,,,,,54171-;2-;3-;4-;5-;6-;7-;8-3OCPFig.3OCPflowchart1-;2-;3-;4-;5-;6-;7-;8-;9-;10-;11-;12-;13-;14-;15-4RASAFig.4RASAflowchart2Table2Technicalandeconomiccomparisonofsomeblastfurnaceslagtreatmentmethod/(kWh)52.5815~16/m36~831010~15/m30.90.81.21/%158~1015~2015~201.2:02MPa,110,0.8~12t200533t,1t,1t,H2SSOx,,1t1600~1800MJ,55~61kg,400t(60%),1450~1500,,10%,,,,,2热能回收技术,2.1()Mitsubishi[5]NKK[6],,,,,,1773K1273K573K,(5)[7],,40%~45%,,5NKK/MitsubishiFig.5HeatrecoveringplantofNKK/Mitsubishiairgranulation556:NKK[6]2,,(),2,,(6),,,,6NKKFig.6HeatrecoveringplantofNKKcoolingslagdrumKvaernerMetals[8],,,,,,,6t/min,1500r/min(7),,,,7Fig.7Mechanicalgranulationtechnics[8],,,,100~200K,,(8)2mm,,8Fig.8Moltenslaggranulationandheatrecoveringplant2.2Bisio[8~10](CH4)(H2O),(H2)(CO),,(1):CH4(g)+H2O(g)=3H2(g)+CO(g)(1)9Fig.9Jetatomizationplant5617CH4(g)H2O(g),,,(9),,,,,(2):3H2(g)+CO(g)=CH4(g)+H2O(g)(2)10,10Fig.10Heatrecoveringprocessofmethanationsteamcircularreaction[11],,,CH4(g)+H2O(g)=3H2(g)+CO(g)(11),3发展趋势(12)2050,,,,,,,,11Fig.11Heatrecoveringprojectofdryslaggranulationbyrotatecup12Fig.12Blastfurnaceslagdrygranulationsketchchart,,[12]80,,,(),(),,,,,576:,:,,,,:,,;,,4结论(1),,,,(2)(3),(4),,,H2SSOx:[1],.[M].:,2004.[2].[M].:,2005.[3].[P].:98106855.3,19981125.[4],.[J]..2002,21(10):5255.[5]TaniY.NewEnergyConservationTechnologies[M].Berlin:Springer,1981.[6]KenneyWF.EnergyConservationintheProcessIndustries[M].Orlando:AcademicPress,1984.[7].[J].,1994,(5):7175.[8]BisioG.EnergyRecoveryFromMoltenSlagandExploitationofRecoveredEnergy[J].Energy,1997,22:400550.[9]WirthKE.HeatTransferinCirculatingFluidizedBeds[J].ChemicalEngineeringScience,1995,50:21372151.[10]NagataK,OharaH,NakagomeY.TheHeatTransferPerformanceofaGasSolidSontactorWithRegularlyArrangedBafflePlates[J].PowderTechnol,1998,99:302307.[11]ToshioM,JunichirofY,TomohiroA.GranulationofMoltenSlagforHeatRecovery[A].200237thIntersocietyEnergyConversionEngineeringConference(IECEC)[C].641646.[14],.[J].,2006,(3):7881.5817