简介：Intheproductionofhotextrusionpipes,thebilletwillbeheatedinaninductionfurnace,beforepiercingorextrusion,toacertaintemperature.Theinductionheatingtemperaturefieldprofileinthebilletwillexertaninfluenceonthedeformationprocesses.ThestudyhasdevelopedandataconversionprogramtoconvertthetemperaturedatafrominductionheatingbyANSYStodeformationsimulationsoftwareDEFORM;therefore,notonlytherelativelyaccuratetemperaturefieldcanbemadeavailable,comparedwiththeusuallyassumeduniformtemperaturefield,butalsotheconnectionbetweeninductionheatinganddeformationcanbeestablished,whichisessentialtoevaluatetheprocessingparameters.Numericalsimulationofthepiercingprocessesofdifferenttemperaturefieldsbyinductionheatingwascarriedout,andtheresultshaveshownthatthedifferentinitialtemperaturefieldsinthebilletcanleadtodifferentdeformationcurves,whichindicatesthattheconversionprogramisnecessarytostudytheproductionprocessofhotextrusionpipes.

简介：Thelimestone-gypsumfluegasdesulfurization(FGD)processhasbecomethemostwidespreadprocessintheworldforsulfurremoval.Theswirl-et-absorbingwetlimestone-gypsumsinteringFGDtechnologywasdevelopedforsinteringfluegasdesulfurization,andthisprocessproducesvolumesofwastewaterwithvariouscontaminantsthatrequirestreatmentbeforedisposalorreuse.Inthisstudy,thewastewaterqualityfromthreedifferentsinteringFGDsystemsatBaosteelGroupwasinvestigatedandcomparedwithwastewaterfrompowerplantFGD.AtreatmentprocesswasproposedwhichissuitableforsinteringFGDwastewater.Aftertreatmentwithaneutralization,coagulationandsedimentationprocess,heavymetalsinthesinteringFGDwastewaterwerereducedtoalevelmeetingtherelevantemissionstandards,butthepHandammoniaconcentrationweretoohigh,andafurthertreatmentprocesswasneeded.DuetocertainsimilaritiesandcomplementaritiesbetweensinteringFGDwastewaterandcokingwastewater,itisentirelyfeasibletomixthepretreatedsinteringFGDwastewaterintoabiologicalcokingwastewatertreatmentsystem.ThisstudyindicatesthatitisentirelyfeasibletomixpretreatedsinteringFGDwastewaterintothebiologicaltreatmentsystemsusedforcokingwastewaterfromtheironandsteelindustries.

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：TheEuropeanstainlesssteelproducersgenerate20-30kgdustpertonofproducedstainlesssteel.ThedustformedduringvariousstagesoftheproductionprocesscontainsvaluablemetalssuchasCr,NiandMo.Ingeneralthisdustisconsideredasahazardouswaste.Ifnottakencareofthedustwillbeanenvironmentalriskcausingpotentialproblemssuchasleachingofheavymetalsintogroundwaterandpollutionoflandandair.Byapplyingtechniquesforrecyclingthedusttheproblemisminimizedandvaluablemetalsarerecoveredandre-usedasrawmaterialinthesteelmakingprocess,leadingtoasignificantreductionoftheconsumptionofnaturalresourcestodeceleratetheclimatechangeandensureasustainabledevelopment.OneofthebusinesssegmentsofBefesaZincS.L.U.,asubsidiarycompanyofAbengoa,istherecyclingofdustsandotherresiduescontainingnickel,chromiumandmolybdenumfromthestainlesssteelindustry.Thetechnologiesappliedaresubmergedarcreductionsmelting（BefesaValeraS.A.S.,Gravelines,France）andplasmareductionsmelting（BefesaScanDustAB,Landskrona,Sweden）.Stainlesssteelplantdusts,millscaleandotherresiduesaredeliveredinclosedcontainersandbigbagsbyship,railortruckandstored.Afterapreparationoftheresiduesandchargingintothepyrometallurgicalfurnace,themetalcompoundscontainedinthechargearereducedtometalsinthepresenceofthecarbonadded.AtBefesaScanDust,theregularlytappedliquidmetaliscastintheformofgranulesviatheGranshot?granulationprocess.Thegranulatedproducthasmanyadvantagessuchasexcellentpreheatingpropertiesandfastmeltingwhenaddedtoametallurgicalprocess.Thegranulessizeandshapealsomakesitverysuitabletohandlewithmostrawmaterialhandlingsystems.Bygranulatingtheso-calledalloyedpigiron（API）ahighmetallicyieldisachievedensuringmaximumrecoveryofmetalandlessnewdustgenerationcomparedtoacrushedmaterial.Thegranulesareredeliveredtothestainlesss

简介：Whenliquidsteelslagproducedfromsteelmakingprocesswastreatedintothepost-coldslagbyconventionalmethods,thegreatdealofslagheatwasdissipatedintotheenvironment,causingalotofenergywasteandenvironmentalpollution.Inthisstudy,anovelapproachofdirectutilizationofhotsteelslagasarawmaterialandslagheatfortheproductionofglass-ceramicswasproposedandexperimentallytested.Inordertosimulateliquidslagfromsteelmakingelectricfurnace,40%water-quenchedslagwasremeltedat1450℃andthenmixedwith60%meltingadditives（silicapowder,aluminapowderandsodiumoxide,etc.）andsubsequentlymeltedtogetherat1500℃for1hintomodifiedliquidslagwhichwascast,heat-treated,annealedandtransformedintoglass-ceramics.Theheat-treatedglasssampleswereinvestigatedusingdifferentialthermalanalysis（DTA）,X-raydiffraction（XRD）,andscanningelectronmicroscopy（SEM）.Theresultsshowthatdominantcrystallinephaseisdiopside[CaFe（SiO3）2]andtheshapeofthecrystalislikethegranule,diameterisabout0.2-0.6μm.Aglass-ceramicwithnucleationtemperatureof695℃fortwohoursandcrystallizationtemperatureof893℃foronehourand1163℃forhalf-hourexhibitedthebestcombinationofproperties.Thismethodofslagmixedwithmeltingadditivestoadjustthecompositionoftheparentglassisimportantfortheindustrialproductionofglass-ceramicsbydirectutilizationofhotsteelslag.

简介：

简介：Anovelprocesstechnologytoprepareglass-ceramicsdirectlyfrommoltensteelslag(MSS)isproposedinthestudy.Theliquid-solidmixingmethodwasusedtoadjustthecomponentsoftheMSSandglass-ceramicswasobtained.Theeffectsofheat-treatmentconditionsonthemicrostructure,physicalandmechanicalpropertiesofsampleswerestudied.Economicalbenefitsofthenovelprocesswereanalyzed.Theresultsshowthatheat-treatmentisaveryeffectiveapproachtoachievingcrystallization.Thedominantcrystalphaseinproductsisdiopside[(Mg6Al2Fe2)Ca(Si1.5Al5)O2].Theshapeofthecrystallizationislikeagranule.Theglass-ceramicsamplesexhibitedgoodmechanicalpropertiesandpresentedchemicalstability.Theeconomicbenefitsoftheprocessareremarkableduetolessenergyconsumptioncomparedwithconventionalglass-ceramicsproductionmethods.

简介：4月15日，哈尔滨电气股份有限公司北京核电设备设计院成立仪式在哈电集团北京分公司隆重举行。

简介：装备制造业是为国民经济发展和国防建设提供技术装备的基础性产业。大力振兴装备制造业，是党的十六大提出的一项重要任务，是树立和落实科学发展观，走新型工业化道路，实现国民经济可持续发展的战略举措。我国装备制造业经过50多年的发展，取得了令人瞩目的成就，形成了门类齐全、具有相当规模和一定水平的产业体系，成为我国经济发展的重要支柱产业。但我国装备制造业还存在自主创新能力弱、对外依存度高、产业结构不合理、国际竞争力不强等问题。为加快装备制造业的振兴，现提出以下意见：

简介：国务院办公厅27日发布《关于加强环境监管执法的通知》（以下简称《通知》）称，近年来，各地区、各部门不断加大工作力度，环境监管执法工作取得一定成效。但一些地方监管执法不到位等问题仍然十分突出，环境违法违规案件高发频发，人民群众反映强烈。经国务院同意，现就加强环境监管执法有关要求通知如下：

简介：日前，第一条由国内单位独立完成的全交流棒材电控系统——淮钢转炉特钢全交流调速棒材电控系统热负荷联动试车一次成功，项目已顺利投产．这标志着国内全交流大棒材生产线建设长期依靠国外厂家的局面已被打破。冶金自动化研究设计院是该项目的承担者．冶金自动化研究设计院长期坚持科技创新的发展之路．依托自身积累的工程资源优势。将引进技术和消化吸收再创新结合起来．在着力增强自主创新能力、提高工程的核心竞争力上又向前迈出了可喜的一步。