简介：Steelmakingisenergyandmaterialintensive.Thatiswhysteelisalwaysdemonizedandconfrontedwithincriminationsandrequirementsforreductionofitsenvironmentalimpact.Thosepuredemands-likeforemissiontradingareshort-sightedastheydonotbaseonanintegratedapproach.InsteadtheymerelyconsiderCO2emissionsduringtheproductionprocess.Aforward-looking,globalclimateandenvironmentalpolicyneedsasustainablelifecycleapproach.Thereforeitmustforexamplealsotakeintoaccountthecontributionofsteeltowardscuttingemissionsinitsapplication-intheenergy.automotiveandhouseholdsectors.Steelwillplayakeyroleinclimateprotection.One-thirdoftheremainingCO2reductiontargetplannedinGermanyby2020canonlybeachievedwiththehelpofinnovativesteelproductsandtheirapplications.ThisistheconclusionofanindependentstudybyTheBostonConsultingGroup（BCG）onbehalfofSteelInstituteVDEh,andGermanSteelFederation.ThestudycomparesCO2savingsfromimportantinnovativesteelapplications（suchasmoreefficientpowerstations,windturbines,orlightervehicles）withCO2emissionscausedbysteelproduction.Byadoptingthiscomprehensiveperspective,thestudyforthefirsttimeprovidesaCO2balanceforthematerialsteelbycomparingtheCO2reductionsmadepossiblethroughinnovativesteelapplicationswiththeCO2emissionsresultingfromsteelproduction.ThebalancewascalculatedonthebasisofeightselectedinnovativesteelapplicationsinGermanyfortheperiod2007to2020,wherebytheCO2emissionscausedbysteelproductionwereconsideredthroughouttheentirelifecycleoftheparticularsteeluse.Fortheselectedexamples,theuseofinnovativesteelsresultedinatotalsavingspotentialof74MtofCO2in2020.Thecalculationsarebasedonconservativeassumptions;forexamplewithoutcountingofpotentialsbyexportedsteelorbycomparisonwithcompetitivematerials.TheproductionofsteelinGermany,includingtheextractiono

简介：CO2emissionofthesteelindustrytakesupagreatproportionofthetotalemissionoftheworld.ItisnecessarytoreducetheCO2intensityofsteelproductsinordertosaveenergy,protecttheenvironmentandkeepasustainabledevelopmentinthesteelindustry.Basedontheresearchofsteelproducts'lifecycleinventory,thosewhoconductedthisresearchhavefocusedontheanalysisofCO2emissionfactorsandmeasures.Adoptingthelifecycleinventorymodelofacertainsteelmakingsite,togetherwiththeTornadoChart,theresearchershaveidentifiedsignificantfactors,providedsomeexplanation,andsuggestedsomepossiblemeasurestoreduceCO2emission.TheresultshaveshownthatthemostimportantfactorsaretheCO2intensityofblastfurnacegas(BFG),hotmetalratioofbasicoxygenfurnace(BOF)andthematerialutilizationefficiency.Accordingly,somemeasuressuchasremovingCO2inBFG,decreasingthehotmetalproportioninBOF,andimprovematerialutilizationefficiencyineachprocess,maybetakentodecreaseCO2emission.

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简介：Thedifferencesofreductionbehaviorsbetweenironorelumpandpelletswerestudiedbyconductinglowtemperaturereductiondegradation,staticloadreductionanddroplettests.Thesetestssimulatedtheconditionsofreductiontemperatureandhydrogen-containinggasinCOREX.Duetoitsdensestructureandlowporositycomparedwithpellets,lumporepossessespoorreductiondegradationindex(RDI)andslowerreductionrateinearlyandmediumreactionstages,showingsignsoflowerstrength,lowersofteningandmeltingtemperatures,aswellasawidermeltingzoneandhigherΔP.Thatprovidessomebasistoexplainthephenomenaofdifferentialpressurerise,metallizationdeclineandmorestickingaftertheusageoflumporeinCOREXplant.

简介：Cr2O3-formingferriticstainlesssteelshavebeenwidelyexploredasintermediatetemperaturesolidoxidefuelcells（SOFCs）interconnects.However,theevaporationofchromiascalemightmigratetoandpoisonthecathode,leadingtodegradationofthecellperformance.Inthisstudy,Ni-Co-Fe-Pcoatingsweredepositedontheferriticstainlesssteelbymeansofacost-effectivetechniqueofelectrolessmethod.Theyareexpectedtobeconvertedinto（Ni,Co,Fe）3O4spinelwithahighelectricalconductivityandCTEmatchwithstainlesssteel,whichcanblocktheevaporationofchromiaformedonsteelsubstrateexposedtothecathodeenvironmentoftheSOFC.TheeffectsofpH,massratioofFeSO4/（FeSO4+NiSO4+CoSO4）andtemperatureofsolutiononthedepositionrate,compositions,surfacemorphologiesandstructuresoftheNi-Co-Fe-Pcoatingswereinvestigated.TheresultsindicatedthatthedepositionrateincreasedwithincreasingpHwhenpHwaslowerthan9andthenreducedwhenpHwashigherthan9.Thedepositionrateincreasedwithincreasingtemperaturewhentemperaturewaslowerthan80℃andthendecreasedwhentemperaturewashigherthan80℃.ThedepositionratedecreasedwiththeincreaseinmassratioofFeSO4/（NiSO4+CoSO4+FeSO4）.ThecoatingsconsistedofNi,Co,FeandP.Thephasestructureofthecoatingwasamorphous.

简介：TheIronmakingPlantofTangshanIron&SteelCo.Ltd.takescleanproductionasitsorientation.Itdecreasessilicontosmeltthroughincreasingtheenteringfurnacesinterratio,stabilizingcokequalitybytacklingkeyproblems,increasingcoalinjectionratio,aswellaskeepingtheblastfurnacesmoothrunningandsoon.Theenergyconsumptionofsinterworkingprocedurehasbeengreatlyreducedthroughoptimizingtheoreblenderstructure,enhancingthequalityoffuelandflux,increasingthequicklimeamount,reclaimingtheremainingheatoftheannuluscoolingsystemanddeepeningthemateriallayertosinter.Wehaveachievedtherepetitioneconomyandthesecondlyresourcehasbeenusedsyntheticallywithadvancedproducingtechnics.Theenvironmentaroundtheplanthasbeengreatlyimprovedbypreventing,monitoringandfatheringthemovingpollutionroot,atthesametime,theeconomyandenvironmentdevelopmentinphasehasbeengreatlyaccelerated.

简介：采用碱熔处理样品，酸化后，移取部分溶液稀释后引入ICP测定ZrO2、TiO2、Fe2O3含量，剩余溶液用强碱分离钛、铁、锰等干扰元素后，EDTA—CuSO4法返滴定Al2O3，终点明显，检测重现性好；

简介：为改善南钢2×24m^2生产线烧结矿质量和降低烧结能耗，烧结厂实施应用了热风烧结技术，并进行相应的技术措施，使烧结能耗大大降低，烧结矿质量明显改善，取得了良好的经济效益。

简介：本文通过分析2号高炉2段水温差随铁中钛的变化情况，提出铁中钛的理想控制范围为0．08－0．10％在正常护炉时，2段28^#冷却壁水温差与铁中钛无关。

简介：ToimprovethemechanicalpropertiesofWC-Al2O3composites,theeffectsoftraceamountofCeO2additivesonthemicrostructureandmechanicalpropertiesoftheWC-Al2O3compositespreparedbyhotpressingwereinvestigated.TheresultsrevealedthattheWC-Al2O3compositesdopedwith0.1%CeO2possessedrefinedmicrostructureandenhancedmechanicalpropertiescomparedwiththatoftheundopedWC-Al2O3composites.TraceCeO2suppressedthedecarburizationofWC,promotedthemicrostructuralrefinement,andimprovedtheinterfacecoherenceoftheWCmatrixandAl2O3.When0.1%CeO2wasaddedtotheWC-Al2O3composites,theeffectofCeO2resultedintheachievementofarelativedensityof98.82%withanexcellentVickershardnessof16.89GPa,combiningafracturetoughnessof9.85MPa·m1/2withanacceptableflexuralstrengthof1024.05MPa.

简介：Theslidinggateusedtostopslagduringconvertertappingissimilartothecontrolofslidegateinladle,withtheslidinggatedeviceinstalledoutsidetheBOFtappingholetip.Owingtothequickopeningandclosing(in0.5s)oftheslidinggate,itcannotonlyeffectivelystopthepre-slagandpost-slagduringconvertertappingbutalsoautomaticallyjudgeandstopslagwiththehelpofAMEPAslagdetectingandPLCcontroltechnology.Currentlyitisregardedasthebestprocesstostopslagduringconvertertapping.

简介：本文介绍了2^#高炉自2000年9月份大修时为提高其装备水平所采用的先进技术以及投产后增铁降耗所取得的成绩，促进了2^#高炉技术经济指标的不断改善。

简介：2005年12月10日,因设备故障引起高炉无计划休风10个多小时,复风后频繁崩料最后导致炉凉,事故处理耗时5天,损失很大。

简介：高炉原料中的有害元素锌和碱金属氧化物对炉内砖衬有不同程度的侵蚀作用,研究有害元素对高炉炉衬的危害,并掌握不同的有害元素对高炉生产的影响显得尤为重要。

简介：1996年12月31日我厂2号高炉停炉大修。炉容仍为300m~3,由原来10个风口改为12个风口。炉底、炉缸采用自焙炭砖——陶瓷砌体,水冷炉底、水冷炉喉钢砖。设计顶压60kPa,料车由2.5m~3改为2.8m~3。1997年2月25日点火开炉,开炉后两个月内未能

简介：2#高炉炉顶一次均压及均压放散阀原采用钢绳地面卷扬驱动,将其改造为液压油缸驱动,大大降低了设备故障率,提高了设备运行的可靠性。

简介：对2#连铸机高锰中碳系列的钢种根据不同的断面和拉速进行射钉实验,根据低倍图测得凝固坯壳的厚度,依据坯壳理论厚度计算公式,求出综合凝固系数K,最终算出凝固终点,并与二级理论模型进行比较。

简介：电炉炼钢厂应用"70tConsteel电炉+LF+CCM"三位一体短流程工艺,成功开发出电动玩具用硅钢片D2。此钢的试制成功,为电工硅钢在电炉上生产提供了实际经验,且进一步拓展了我厂电炉钢产品结构,为适应市场需要创造了有利条件。

简介：二炼钢分厂2^#铸机高效改造后，铸坯产量、质量及技术经济指标有了很明显的。将工艺和设备等方面的问题解决好，就能实现顺产、稳产、高效益的目标。

简介：<正>前言随着我国法制化的日趋健全和完善,安全生产监督管理体系也逐步向科学化、规范化、制度化发展,工程完工总结作为现代先进安全生产管理模式的主要内容之一越来越受到重视。"安全第一、预防为主、综合治理"是我们党和国家始终不渝的安全生产方针,工程总结正是突出"安全第一、预防为主、