简介：BadischeStahlwerkeinKehl,GermanyislocatedontheriverRhineclosetotheBlackForrest,whichisarecreationalarea.AsaconsequencetheenvironmentalregulationsforBadischeStahlwerkeareevenmorestringentthanthealreadystringentGermanregulations.BadischeStahlwerkeelaboratedovertheyearsmanyconceptsforthereductionofenvironmentalimpactbyasteelplant.Theseconceptsdealwiththereductionofemissionstoairwaterandsoil,butalsowiththerecyclingofallbyproductsfromsteelmakinglikeslag,dust,scaleandsomeothers.ThesuccessoftheseconceptscanbeseenbytheverylowemissionvaluesofBadischeStahlwerkeandalsotheprofitderivedfromtherecyclingofby-products.Otherideashavebeenworkedouttominimizenoiseemissionsandtodetectradioactivesourceswhicharecomingtogetherwiththescrapintothesteelmakingprocess.Thisproblemisgettingmoreandmoreserious.Withtheexperienceofmorethan25yearsinenvironmentalprotectioninthesteelindustry,BSEcanoffertheseconceptsandsolutionstootherminimillstoshortenimplementationtimeofenvironmentalprotectionandtoavoidexpensivemistakes.ThispapershowswhichlevelofemissionscouldbereachedwithouthavinganydisadvantageonproductivityandgivesanoverviewofvariousstandardsandpracticesinEuropeandworldwide.

简介：Highfunctionalitygiventosteelproductsresultsinanincreaseofenvironmentalloadsinthesteelmakingstage.However,atthestageoftheirutilization,thehigh-functionalsteelproductsprovetobemoreenvironmentallyfriendlythantheirconventionalcounterpartsinmanycases.Inviewofthiscontradiction,theevaluationonthecontributionofsteelproductstoenvironmentalimprovementrequiresamoreintegratedapproach-LifeCycleAssessment(LCA),whichincorporatestheeffectsovertheproducts'entirelifecycles.Thispaperdiscussestherelationshipbetweentheimprovementofsteelproducts'performanceandtheaccordingenvironmentalimpactfromtheentirelifecycleperspectives.Howtoevaluateandassessthecontributionofhigh-functionalsteelproductstoenvironmentalimprovementusingLCAmethodisexplainedindetail.TwocasestudiesofBaosteelaregiventosubstantiatetheeffectivenessofLCAasascientificandsystematicmethodforeco-materialevaluationoreco-design:①Forapowertransformer,byreplacingsiliconsteelB30G130withB30P110,thecarbondioxideemissionswerereducedby15.1%overthelifecycleofthetransformer.②TinplatesteelofBaosteelusedfortwo-piecesteelcansexperiencedsixreductionsinthicknessfrom0.28mmto0.225mm,whichresultsina14.5%emissionreductionoverthelifecycleoftwo-piecesteelcans.

简介：Investigationintothemagnetswithdifferentsquarenessofhysteresisloop(SHL)revealsthatthemicrostructureofsinteredNdFeBmagnetshasgreateffectsontheSHLofthemagnets.TheabnormalgraingrowthdeterioratestheSHLseriously.Theshapeofthegrainandthegrainboundaryaffecttheintensityofdemagnetizationfield,andconsequentlyontheSHL.Theaddedelementshaveeffectsonthephasestructuresanddistributionsinthemagnets,whichinfluencestheuniformofdemagnetizationfield.

简介：Increasingproductioncapacityandoperatingrate,reducingfuelratesandcostsofhotmetal(HM)aretheurgenttasksfortheCOREXprocess.Inthisstudy,thevariousfactorsonthefuelconsumptionofCOREXareresearchedfromthetheoreticalanalysisbasedonthecalculationsofmaterialbalancesandheatbalances.CombinedwiththeproductionperformancesandpracticesofCOREX-2000(Saldanha,India)andCOREX-3000(Baosteel),thetechnicalmeasuresofreducingthefuelrateareanalyzedandthewayforwardoftechnicalinnovationisaddressedanddiscussedwiththestandpointoftheCOREXprocessimprovement.

简介：Toaddressthephenomenonofsparkingduringtheedgeinductionheatingprocessinhotstripmills,thispaperusesnumericalsimulationtosystematicallyinvestigatethekeyfactorsinfluencingsparkingandtheireffects.Thedistributionofinducedcurrentdensityinthesteelplateaboverollerconveyortableduringtheheatingprocessiscalculatedandcomparedunderdifferentconditions,includingtherelativepositionsofthesteelplateandinductioncoil,thewidthofthesteelplate,andchangesinload.Theresultsshowthatwhenanarrowsteelplateisheatedorthesteelplateshiftstothesideoftheinductioncoil,sparkingbetweenthesteelplateandrollerconveyorismorelikelytooccur.

简介：ThispaperintroducedtheresearchbackgroundandtechnicalfeaturesofBaosteel’ssinteringfluegasdesulfurization(FGD).Itwasalsonamedswirl-jet-absorbingwetlimestone-gypsumsinteringFGDtechnology.Bymeansofindustrialonlinepilotplants,throughcontinuousrunningandorthogonaltests,theeffectsofvariousinfluencingfactorsonSO2removalefficiencyofBaosteelsinteringfluegasdesulgurization(BSFGD)werestudiedcarefully.TheresultsindicatethattheslurrypHvalue,temperature(T)andflowrate(Q)ofinletfluegas,liquidlevel(H)intheabsorberandfluegasjetvelocity(V)arethemaininfluencingfactors.Furthermore,whenpHisbetween5.0and5.5,Hisbetween4.2mand4.3m,Qis43000m3/h,Tisbelow65℃andVisbetween20m/sand28m/s,thebestdesulfurizationefficiencycanbeavailable.

简介：Steelproductionremainsanenergy-intensiveindustryinaworldwherethereisanever-increasingemphasisonloweringenergycosts,reducinggreenhousegasemissions,ensuringenvironmentalcompliance,andimprovingproductionrates.Asthegrowthindemandforspecialitysteelscontinuesitssteadyincrease,andnewmarketopportunitiesforeverhighersteelperformanceappear,significantglobalattentionisfocusedonsecondarysteelprocessing,andontheVD,VODandRHprocesses.Onenewtechnologyisabletoaddressalloftheseissuesandconcernstogether-theintegratedladletankvacuumdegassingstationequippedwiththenewmodularmechanicalvacuumpumpingsystems.Thispaperwillexaminetheeconomicandenvironmentalbenefits,operationalcharacteristics,andrecentresultsprovidedbysuchsteeldegassinginstallations.