简介：Baosteel'ssteelmakinghasdevelopedgreatlyoverthelast30yearsintheareasofhotmetalpretreatment,converter,electricarcfurnace(EAF),secondaryrefining,continuouscasting,stainlesssteelandthecomprehensiveutilizationofresources.Thedevelopmentoftechnologies,suchascleansteelproduction,ruhrstahlheraeus(RH)vacuumrefining,abreakoutpredictionsystemforslabcontinuouscastingandrotarycylinderslagtreatmenthascreatedagoodenvironmentforthedevelopmentofvalue-addedproductsandthecomprehensiveutilizationofresourcesatBaosteel.ThispaperdescribesthedirectionofdevelopmentofBaosteel'ssteelmakinginthefuture.

简介：Theblastfurnaceistheoldestmetallurgicalprocessincommercialuse.Ithasgonethroughgreatimprovementsduringthelastdecadesandnewimportantmodificationsarestillforeseen.Thehugeamountofcoalandcokeneededforreductionofironoreisresultinginemissionsofcarbondioxidethathavetobestronglyreducedtomeettherequirementofminimizingthecarbonfootprint.Allresidualsfromiron-andsteelmakingalsoneedtobetakencareoftomeettherequirementofzerowaste.ThispaperdealswithseveralpotentialimprovementsoftheblastfurnaceprocessbeingdevelopedintheLKABExperimentalBlastFurnaceinLulea,Swedenoverthelastdecade,includingoperationatultralowslagvolume,injectionofBFfluedust,injectionofBOFslag,andtheoxygenblastfurnace.

简介：Steelplaysavitalroleineveryfacetofourlife.LikeDNAinourbody,steelplaysacrucialroleinthedevelopmentofanysociety.Frominfrastructure,defence,transportation,research&developmentandevenindaytodaylife,everywheresteelisused.Percapitaconsumptionofsteelistreatedasanimportantindexforthesocioeconomicdevelopmentofanycountry.Therapidandcontinuinggrowthofsteelindustryduringlastfewdecadesbearstestimonytotheindispensabilityofsteelasavitalresourceforeconomicdevelopment.Thoughsteelasaproductisecofriendly,theprocessofmakingsteelisassociatedwithlotofenergyandenvironmentalramifications.AccordingtoInternationalEnergyOutlook2009,ironandsteelindustryaccountforabout20%ofthetotalindustrialenergyconsumption.Hencethisindustrialsectorcanplayapivotalroletoinfluencetheenergyandenvironmentalscenarioofanycountry.Asaresponsiblecorporatecitizen,SteelAuthorityofIndiaLimited,thelargeststeelproducerinIndia,hastakenvariousinitiativesovertheyearstowardstheprotectionofenvironmentandreductioninenergyconsumption.Thishasresultedinthereductionofenergyconsumptionbyalmost15.45%overaperiodoflast10years.Theinitiativeisalsoevidentinthecompany’sgrowthplanwhichaimsatalmostdoublingtheproductioncapacityinthenearfuturefromtheexistinglevelof13.5Mt/a.ImplementationoftateofitleanechnologieslikeCDQ,TRT,andwasteheatrecoveryfromsinterplants,maximizingCDI&CTIinblastfurnaces,augmentationofpollutioncontroldeviceswithmoreefficientequipmentareontheanvil.Thesereaffirmourcommitmentsforcleanandsustainableenvironment.ThispapergivesanoverviewoftheeffortstakenbySAILovertheyearsforenergyconservationandenvironmentalprotectionwithspecialemphasisonafewprojectslikebyproductfuelforpowergeneration,useofenergyefficientburners,maximizingtheuseofthyristorsinplaceofmotorgenerators,cokedryquenchin

简介：IronmakingatBaosteelhasfocusedonblastfurnacesoverthelast30years.Afterpassingthroughthestagesof'learning','tracking','usage','experimentation','innovation'and'development',Baosteel'sproductioncapacityhasgrownsteadilyanditsstandardoftechnologyisincreasing.Remarkableprogresshasbeenmadeinthetechnologiesofblendingstack,thicklayersintering,lowsiliconandhighanhydroferritesintering,coalblending,andthehighproductivitywithhighpulverizedcoalinjection(PCI)rateandlongcampaignoftheblastfurnaces.Theentireironmakingprocessisdevelopinginthedirectionofhighefficiency,lowenergyconsumption,cleanproduction,andenvironmentalprotectionbecausethezerodischargeofsolidwasteandindustrialsewagehasbeenachieved.After20yearsofdevelopment,Baosteelhasbecomeamodernizedironproducerwithanannualcapacityof28.85Mtofsinter,7.26Mtofcokeand22.50Mtofhotmetal(PugangCorexfurnaceoutputincluded),anditsmaineconomicandtechnologicalindiceshavereachedaworld-classlevel.

简介：Themainfailuremodesoftubingandcasingincurrentserviceconditionsarerepresentedinthisstudy.Theprogressofthetubingandcasingapplicationtechnologyandtheproblemsthatshouldbefocusedonduringapplicationareintroduced,withspecialattentionpaidtothereliabilityofthepipestringdesignandtheconnectionsealingproperties.Thenecessaryworkthatshouldbeundertakeninfutureresearchisalsosummarized.

简介：Sincethe2050mmhotstripmillwasputintooperationin1989,Baosteelhasmadegreatachievementsinincreasingproductivity,developingnewprocesstechnologiesandsteelproductsandimprovingproductquality.Inthepast18yearsfrom1989to2007,Baosteelhasconstructedfivehotstripmillswithatotalannualcapacityof19.8Mt.Indicesfortechnologystandards,productcategoriesandsteelgrades,productquality,bothtechnicallyandeconomically,taketheleaddomesticallyorreachedtheworldclasslevel.Astherearemanyhotstripmillsthatexpectedtobeputintooperationbytheendof2010,theoverallannualcapacitywillexceed30Mt,andtheproductwillcovergrainoriented(GO)Sisteelsandalloyedsteels.

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：Baosteel's5mheavyplateplantwassuccessfullytestedonMarch1,2005.Sincethen,theHeavyPlatePlantofBaosteel(hereinafterreferredtoas'theplant')hasbeenencouragingitsemployeestostudyandtracetheadvancedheavyplatetechnologies,tryingtofindouttherulesofheavyplateproductionanditsqualitycontrol.TheplanthasgraduallymasteredthismodernheavyplateplantandensuredthatBaosteel'sproductionofheavyplatesgrewyearbyyear,with1.41Mtproductputinstoragein2007.Theplanthasfocusedondevelopingnewtechnologiesandproducts,meanwhileenhancingitscapacity.Ithasproducedaseriesofplateproducts,whichcanbeusedinmanufacturingshiphulls,pipelines,bridges,buildings,boilersandpressurevessels.

简介：在我国,女职工足一种广大的人力资源。女职工参加的工作和劳动范围很广大,遍布各行各业。女职工在改造自然、征服自然,获得物质生活资料的进程中起着"半边天"的作用。为了使女职工有充沛的、持久的精力在各项建设事业中充分发挥作用。从而必须关心她们的疾苦,认真做好女职工劳动保护工作,充分调动广大女职工的劳动积极性,提高女职工的劳动素质,这对于促进我国生产力的发展具有重要的意义。所以,保护女职工就是保护生产力。

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：本文分析了常规板坯连铸结晶器、薄板坯连铸结晶器、方坯连铸结晶器和高拉速连铸结晶器的连铸特点及对结晶器保护渣性能的要求。

简介：连铸大包保护浇铸因受影响条件较多,是连铸保护浇铸最难控制的一个环节。本文对连铸大包保护浇铸的设计原理进行了阐述,对实际生产中影响大包保护效果的因素进行了分析,并提出了解决方案,从而达到改善保护浇铸效果,提高铸坯质量的目的。

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：1前言为改善二炼钢厂模铸锭表面质量,解决钢锭表面和钢材中心增碳问题,减少内部退废和外厂质量异议,模铸保护渣课题组通过小型试验,筛选出南阳渣、靖江渣和新余渣,并进行了批量对比试验,结果表明,靖江渣浇铸的钢锭,表面质量较好,锭和材增碳轻微,符合质量要求,可推广使用。2试验条件2.1批量试验保护渣技术条件

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。

简介：保护渣流动行为对铸坯质量有着重要影响,本文通过数值模拟,并利用Fluent商业软件对此模型进行计算,分析了影响弯月面处熔渣流动的主要因素,包括:结晶器振动参数、保护渣粘度、浸入式水口参数和拉坯速度等。

简介：电动机的后加速保护,是微机继电保护装置出现以后才出现的一种对电动机速断保护的优化,由于其设计目的是在电动机堵转后提供快速保护,因此也叫电动机堵转保护。它的设计思路是在电动机起动期间,将电动机的速断保护定值设定的比较高,以躲过电动机的启动电流.

简介：浸入式水口的设计也是薄板坯连铸工艺中的一项关键技术，由于薄板坯连铸用保护渣的特点是黏度低、氟含量高，对耐火材料的侵蚀性强，所以薄板坯连铸中保护渣对浸入式水口渣线材料的侵蚀严重。同时薄板坯连铸结晶器内腔空间狭窄，水口渣线处壁厚仅为传统水口的1／2～1／3。所以经常因为渣线材料的损毁而导致整个浸人式水口的失效，将直接导致浇注作业的中断，降低了连铸生产率，问断作业必然消耗了大量的能源。

简介：一项研究涉及到在不同连铸条件，不同结晶器尺寸和不同钢种条件下提供一个可靠的结晶器保护渣成分模型的开发。工作的重点在于通过介绍结晶器振动参数和保护渣凝固（熔化）温度对保护渣消耗的影响，保护渣消耗是由于其熔化的结果，保护渣熔化后在钢表面起到润滑的作用。钢厂的数据分析表明，“Tsutsumi（或NKK）关系（模型）”（振动参数和融化温度方面的结合）提供了一个可信赖的保护渣消耗测量方法。