热压含碳球团应用于竖炉熔融还原的基础分析

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1、东北大学硕士学位论文AbstractBasicStudyonApplicationofCarbonCompositeIronOreHotBriquettetoSmeltingReductionbyShaftFurnaceAbstractAtpresent,theblastfurnaceprocessisfacedwithurgentchallengestoachievehigh=productivity,lowerenergyconsumptionandlowerenvironmentload．Toattainthegoalofsustainabledevelopment,SOs

2、omeinnovativeiron-makingtechnologieshavebeenputforthorpracticallyapplied,includingapplicationofcarboncompositeironorehotbriquette(cca)andsmeltingreduction．TheCCBisanewtypeironmakingmaterial，whichutilizesthethermalplasticityofcoaltoenhanogitshigh—strengthandOWesexcellentphysicalproperties，bett

3、ermetallurgicalproperties，andwideadaptabilitytorawmaterials．Thesmeltingreductionstandsforanewdirectionofironmakingtechnology,whichdoesnotdependoncokeandcanachieveenvironmentharmony．AccordingtofuelconditionsinOurcountry,anewsmeltingreductionprocessisproposed，namelysmeltingreductionbyshaftfurna

4、cewithCCBastheburdens．Undertheexperimentalcondition,firstly,hightemperaturepropertiesofCCBisresearchedinthestudy．Secondly,accordingtopreviousresearchfindings，thermalmodelexperimentofshaftfurnacein10kgdegreeisinvestigated．Thirdly,materialbalancingcalculation，heatbalancingcalculationandcomprehe

5、nsiveenergyconsumptionisstudied．Tosumup，theconclusionscouldbedrawnasfollows：(1)BychangingthebasicityandFC／OofCCBandrespectiveinvestigatingeachindexofsofteninganddrippingproperty,theconclusionsisdrawnthattheproperrangeofbasicityandFC／Oisrespectively1．0～1．2and1．0～1．08．Temperatureofdrippingisapp

6、roximately1300"(3，whichislowerthancommonpelletandsinter．(2)Ontheconditionthatthecompositionisoptimized(R=1．2，FC／O--1．O)，RDI+3．15isOVer97％，RSIislessthan1．8％，crushingstrengthafterreductionandcoolingofheat-treatedCCBislessthanoriginalcrushingstrengthanghigherthan444N／per,whichisbetterthanthatofn

7、ormalpelletandsinter．Thus，itisfeasibletoapplyCCBtothesmeltingreductionbyshaftfurnace．V东北大学硕士学位论文Abstract(3)Thermalmodelexperimentofshaftf．umaCeinlOkgdegreeissmoothlyoperated,throughwhich3．87kgmixtureofslagandironisobtained．Bychemicaltest,theq