简介:ThepaperwillgiveanoverviewabouttheCOREX?plantsinoperation,showthenewdevelopmentsandfindingsfortheCOREX?processi.e.arealgasdistributionandcoalbriquettingandthestatusoftheFINEX?technologywillbegiven.
简介:Fromtheviewofthedomesticandinternationalenergy,environmentandoperationsituation,thepaperanalysestheconfrontedproblemsofironandsteelindustry,answerswhybaosteelhasbeenfulfillingenvironmentoperationstrategy,andproceedtotheintroductionofitsenvironmentmanagementpracticeandfutureoutlooks.Theenvironmentmanagementisessentiallyagreenvaluecreation,whichemergestheenvironmentalprotectionintothewholebusinessenterpriseoperatesprocessinordertocreateitsvalue.Theenvironmentmanagementisakindofmanagementcreation,isakindofactiveenvironmentmanagement,whichpromotesthemainsenseofenergyconservationandemissionmitigation.
简介:MaterialFlowAnalysis(MFA)isacrucialinstrumentforsustainabledevelopmentandcreatingindustrialecologysystem.MFAstudiescouldbalanceandanalyzethesources,flows,andconsumesofspecificmaterialsorsubstances.TheresultsofMFAstudiescouldsupportthestrategiesordecisionsmakingforenergy,resource,andwastemanagement,especiallyachievingsustainableresourcemanagement.AtCSC,thedynamicsimulatingsoftware,STELLA,isusedtodevelopaMFAmodelforscenarioanalysis.CSCalsousesthefreewareSTAN2.0asatoolforvisualizingandsimulatingmaterialflowsandstocks.CasestudiesofgreenhousegasesMFAforintegratedsteelworksareconducted.Theresultsshowedthatthecarboncontentofhot-metalisanimportanthiddenflowforbalanceanalysis,andthedifferentGHGemissionscenariosandmitigationactionscenariosareassessed.Inaddition,theIron-makingGHGI/OMFAModel,basedonworldsteelGlobalSteelSectorApproach(GSSA),isdevelopedforcalculatingtheCO2andenergyintensityofcokemaking,sintering,andBFprocesses.ThisMFAmodelwasusedtoanalyzetheCO2reductionpotentialforiron-makingprocess.ThecasesconductedforMFAapplicationsatCSCweresuchasgreenhousegas,zinc,etc.Inthefuture,CSCisgoingtodevelopa'CSCEnvironmentManagementandDecisionSupportingSystem'whichcombineMFA,LCA(lifecycleassessment),andenvironmentriskassessment.Thissupportingsystemexpectstopromotingenergyefficiencyandbestresourceuse,supportingenvironmentpolicymaking,creatingenvironmentalinformationvalue,etc.
简介:Improvingefficiencyinrollgrindingprocessisacriticalissueinthesteelmill.Eachrollhastobegrindedtoawell-definedprofileandthentobemeasuredforqualitycheck.However,thesurfaceconditionsareinspectedbyusingdifferenton-lineinspectionprobesequippedonthegrinder.Therollnumberisauniqueinformationwhichcanbeusedtomergewithahugeamountofmeasurementdatasothattheconditionofeachrollisfullymonitored.Oneofthekeyfactorsthathindertheefficiencyinsuchprocessistheerrorsandtimeconsumptionduetohumanintervention.Inordertomitigatetheseissuesandtorealizethefullyautomaticgrindingprocess,radiofrequencyidentificationtechnology(RFID)couldbeasolutionandhasbeendevelopedinthispaper.ItiswellknownthatwhenanRFIDtagisplaceddirectlyuponametallicobject,intheabsenceofagaporasubstrate,itfunctionsratherpoorlyandevenbecomestotallydysfunctional.Thislimitation,inturn,posesarealbarriertotheuseoftheRFIDonmetallicobjects.ThispaperproposesaminiatureRFIDtagantennadesignforapplicationonrollnumberidentification.TheexperimentaltestsshowthatthemaximumreadrangeoftheproposedRFIDtagplacedonarollisapproximately1.5mandtheoverallsizeisonly32×18×3.2mm~3.AnRFIDsystemforrollnumberidentificationwasusedinarollshopandseveralremarkableimprovementswereachieved,includingthecompletelyautomaticgrindingprocessandtheerror-freeidentification,aswellasthehighpersonnelsafetyoperation.
简介:Surfacequalityhasbeenoneofthekeyfactorsinfluencingtheongoingimprovementofthequalityofsteel.Therefore,itisurgenttoprovidemethodsforefficientsupervisionofsurfacedefects.Thispaperfirstexpressedthemainproblemsexistingindefectmanagementandthenfocusedonconstructingadataplatformofsurfacedefectmanagementusingamultidimensionaldatabase.Finally,someon-lineapplicationsoftheplatformatBaosteelweredemonstrated.Resultsshowthattheconstructedmultidimensionaldatabaseprovidesmorestructureddefectdata,andthusitissuitableforswiftandmulti-angleanalysisofthedefectdata.
简介:Baosteel's60000m3/hairseparationunit(ASU)isthelargestoxygengeneratingsysteminChina.Theoperationalcostofsuchagiantsystemisveryhigh.Howtoreducetheoperationalcostisacriticalissue.Thispaperdiscussesthesystem'scharacteristics,thecurrentoperationalstatusandthedifficultiesinreducingthecost,andanalyzesrelevantindicators,suchasthetechnicalandeconomicalindicatorsofindividualunitsandsystemsaswellastheindicatorsconcerningthecosts.Therelationshipbetweenthecostandeacheconomicalindicatorandmeasurestooptimizeaneconomicaloperationoftheoxygengeneratingsystemarealsodiscussedinthispaper.
简介:Foritspoorfilmformingandwater-resistanceproperties,waterbomeepoxysystemisnotappliedfortheprotectionofsteel.Themainreasonfortheseproblemsisthattheemulsifieroftheemulsifyingefficiencyisnothighwhilecannotbeseparatedouteasily.Now,intermsoftheuseofnewlysynthesizedemulsifierstoimprovethesetwoshortcomings,anewsystemwasdeveloped.Comparedwithsolvent-basedcoatings,thisnewwaterbomeepoxysystem’scorrosionresistancewasfoundclosetothesolvent-basedones.Finally,theapplcationofthisnewwaterbomeepoxysystemfortheprotectionofsteelisdiscussedbriefly.
简介:Thispaperanalyzesthecurrentdifficultiesencounteredinon-lineinspectionsystemsofstripsurfacequality,specificallyrelatingtoproblemswithreal-timeprocessingofhugeamountsofdata.Toaddressthisneed,thispaperdescribesanFPGA-basedhigh-speedimageprocessingmodulewithbothhardwareandsoftwareaspects.Improvingthesetwoaspectstogetherwillhelpthesystemachievereal-timeprocessingofmassiveimagedata,andsimplifiesthearchitectureofthestripsurfacequalityon-lineinspectionsystem.
简介:Inthispaper,theflatnesscontroltechnologyAnShaperTMforcold-rollingmillandindustryapplicationareintroduced.AnShaperTMincludes;partitioningpiezomagneticshapemeterforflatnessmeasurementforcold-rollingstrip;flatnessmeasuredsignalsprocessingsystembasedondigitalsignalprocessing(DSP);flatnessfeedbackcontrolmodelsystembasedonthecontrolefficiencyofflatnesscontrolactuatorsandmodeladaptivefunction.TheapplicationverifiesthatstripflatnesscanmeettheneedofhighqualityproductbyusingAnShaperTM.Theaverageflatnessqualityisabout5Ⅰ-unitandthe0.18mmultrathinthicknessstripflatnessis10Ⅰ-unit.
简介:AccordingtothecharacteristicsofPQFcontinuousrollingpass,therelationshipbetweenspreadcoefficient,wallthicknesscoefficientandelongationareanalyzed.Thesectionshapeoftubeineachstandoutlet,theefficientworkingradiusandtherotationalspeedofeachrollareobtained,therefore,thepassparametricdesigniscompleted.Athermal-mechanicalcoupledmodelofcontinuousrollingtube’sformingprocessisestablishedbythethree-dimensionalelasto-plasticfiniteelementmethod,thesectionshapeandareaoftubeineachstandoutletareforecasted,whichisusedtomodifythepass.Therollingforceofeachrollerispredicttoo,whichprovidesaguidanceforpassdesign.Inaddition,avisualsoftwareofPQFpassparametricdesignsystemonheavycalibreseamlesstubeisgeneratedwithVisualBasic.Theformingdimensionoftubeandtherollingforceofeachrolleraresuccessfullyobtained,bysimulatingtheformingprocessofacertainseriesheavycalibreseamlesstube.Thissystempossespracticalutilizationvalue.Byusingthissystem,thedevelopmentcycleofnewproductcanbeshortened,thereliabilityofpassdesigncanbeimproved,andtheenergyconsumptionofrollingmillandproductioncostcanbedecreased.
简介:BasedontheanalysisresultsofthedustsizedistributionoffluegasfromBaosteel'sshort-flow(BSSF)slagprocessingsystemandthemechanismofthewetscrubber,awetscrubbersystemwasdesignedandinstalledintheNo.1BSSFslagprocessingsystematBaosteel.Theresultsshowthatthedustremovalefficiencyoftheprevioussystemthathadconventionalwaternozzleswasonly69%withaliquid-gasratioof0.79L/m3,whilethedustremovalefficiencyreached94%whenthreesetsofhigh-efficiencydualphasespraygunswereinstalledinsideboththeflueandthechimney.Forthelattersystem,theliquid-gasratiowas0.84L/m3,andthedustconcentrationinthecleanedemissionsreducedtolessthan40mg/m3.
简介:Thispaperintroducesworkingprincipleandtechnicalfeaturesofvacuumfilterinemulsionsystemfortandemcoldstripmill.Basedonspecificcases,thispaperanalysesandassessestheeffectbeforeandafterusingtheemulsionsystemwiththeusageofthevacuumfilterforstripmill.Comparewiththeeffectwhenusingthefirstgenerationvacuumfilter,theemulsionqualityisimprovedsignificantlybyusingthesecondgenerationvacuumfilter,whichatthesametimeensuressteadyoperationoftherollingmillandsurfacequalityofthemillproducts.Asaresult,investmentandrunningcostsarelowered,emissionsofthewasteemulsionarereduced,wastewatertreatmentcostsarereducedandsoastheenvironmentalpollution.Itcanbeseenthesecondgenerationvacuumfilterhasobviouseconomicandenvironmentalbenefits.Therefor,itsuggeststhatthefiltershouldbeusedwidelyinthefieldofautomotive,environmentalprotectionrollingsteelandnonferrousmetals.
简介:Thispaperintroducestheprocessflow,technicalparametersandrelevantfeaturesofBaosteel'sNo.8airseparationunit(ASU)withacapacityof60000m3/h.Itsummarizesthecommissioningwork,whichincludestheadjustmentoftheaircompressor,thesystem'snakedcooling,theprecoolingsystemandtheoperationadjustment.Italsoprovidesdetailedanalysesonsomefailureswhichoccurredinthecommissioning.Throughthemodificationofthedesignandtheinterlocks,thetrippingprobabilityoftheaircompressorwasgreatlyreduced.Throughtheheatingofthesystemandthecontrolofthewatercooler'snitrogenflow,theoverproofcontentofcarbondioxideandfluctuationofoxygenflowwereavoided.Nitrogen-blockintheargonsystemwaseliminatedbytheprecisecontroloftheargonrectificationflowandargoncontent.Allthesesolutionshavebeenprovedtobeeffectivebypractice.
简介:BasedonthepracticeofBaosteel's60000m3/hairseparationunit(ASU),whichisthefirstdomestically-integratedunitofsuchascale,thispaperstudiestheprinciplesoftypeselectionofthedistributioncontrolsystem(DCS).Itdiscussesthedesignoftheunit'scontrolsystem,whichinvolvesacompressorsystem,apurificationsystem(molecularsieving),aturboexpansionsystemandanairseparationsystem.ThefinalpartofthepaperdiscussesthemaintenanceandfuturedevelopmentoftheASUcontrolsystematBaosteel.
简介:Thecoilingtemperatureofthehotstriprollingprocessplaysanimportantroleinstripqualitycontrol.Thenewly-builtlaminarflowcoolingcontrolsystemwasindependentlydevelopedbyBaosteel.L2conductstotallydynamiccontrol(L1onlyexecutestheresultfromL2,anddoesnotconductanydynamiccontrol).Thesystemhasmanyadvantages,suchasquickreal-timecontrol,accuratemodelcalculation,quickresponseafterself-adaptation,etc.Comparedwiththe2050mmhotstriprollingline,thenewsystemcansatisfythestrictcoolingrequirementsofhighstrengthsteel,siliconsteelandheavyplatesbecauseofitsnewly-developedtechnologiesofcoolingratecontrol,stripcoolingbysectionsandproportion-integral-differentialcoefficient(PID)feedbackfuzzycontrol.
简介:EffectsofMo,Nb,Tionmechanicalpropertiesandcorrosionresistanceof22.5%Crferriticstainlesssteelwereinvestigated.TheresultsshowthatMoexistsinferriticstainlesssteelmainlyinthesolutiontreatmentcondition,anditcanenhancesteel’sstrengththroughsolidsolutionstrengthening.InTi+Nbdual-stabilizedferriticstainlesssteel,thesteel’stoughnessdecreasesobviouslybecausecoarseTiNparticlesformandsomemetalliccompoundsprecipitatealongthegrainboundaries.InNbsingle-stablizedferriticstainlesssteel,NbexistseitherinthesolutiontreatmentconditionorintheformofdispersedprecipitatesNb(C,N),whichwillactasthenucleiofprecipitationofthefineσphase.Asaresult,theprecipitationofthecoarseσphasealongthegrainboundarycanbeinhibited,leadingtosignificantimprovementinsteel’stoughnessatalowtemperature.Basedonthese,highcorrosion-resistantferriticstainlesssteelB445Rwasdevelopedforthebuildingcladdingsystem.TestresultsshowthatB445Rhasasuperiorcorrosionresistancetoaustenitic316Linchloridesolution.Besides,ithasagoodformingpropertyandweldability.Allthesemakeitanidealdecoratingmaterialforthebuildingcladdingsysteminseverecoastalregions.
简介:Aconoscopicholography-based3Dmeasurementsystemforanalyzingthedefectsonthesurfaceofsteelplateswasintroducedinthispaper.Thehardware,whichisautomatedthroughsoftware,performssamplingofthesteelplatesurface.Throughthesoftwareinterface,point-clouddataofthesteelplatesurfaceareobtainedandreconstructedtoforma3Dimageofthesteelplatesurface.Thesoftwareallowsautomaticanalysisofsteelplatesurfacedefectsthroughidentificationofthebulgesanddepressions.Inaddition,thesoftwarecanalsoautomaticallycalculatethedefectinformation,suchasthedeepestpoint,volume,openingarea,openinglength,andsoon,therebydeterminingthedefectsize.Theresultsdeterminedbythis3Dmeasurementsystemwerefoundtobeingoodagreementwiththeactualvalues.
简介:Baosteel'sNo.8airseparationunit(ASU)isthefirstdomestically-integrated60000m3/hASU.Thispaperdescribesthemechanicalequipment,thedesignandtheconfigurationcharacteristicsofthisunit.ThepotentialfailuremodesofthemechanicaldevicesarededucedviaanalysesonthefailurehistoryofsimilardevicesinotherASUs.Finally,thispaperalsobringsupsuggestionsondailymaintenance,overhaulandpurchasesofspareparts.
简介:Artificialintelligencetechniqueshavebeenusedtopredictbasicoxygenfurnace(BOF)end-points.However,themainchallengeistoeffectivelyreducetheinputnodesastoomanyinputnodesinneuralnetworkincreasecomplexity,decreaseaccuracyandslowdownthetrainingspeedofthenetwork.Simplypicking-upvariablesasinputusuallyinfluencevalidityofmodel.Itisquitenecessarytodevelopaneffectivemethodtoreducethenumberofinputnodeswherebytosimplifythenetworkandimprovemodelperformance.Inthisstudy,avariable-filtratingtechniquecombiningbothmetallurgicalmechanismmodelandpartialleast-squares(PLS)regressionmethodhasbeenproposedbytakingtheadvantagesofbothofthem,i.e.qualitiveandquantativerelationshipsbetweenvariablesrespectively.Accordingly,afuzzy-reasoningneuralnetwork(FNN)predictionmodelforbasicoxygenfurnace(BOF)end-pointcarboncontentbasedonthistechniquehasbeendeveloped.Thepredictionresultsshowedthatthismodelcaneffectivelyimprovethehitrateofend-pointcarboncontentandincreasenetworktrainingspeed.Thesuccessfulhitrateofthemodelcanreachupto94.12%withabout0.02%errorrange.