年产400万吨合格铸坯转炉炼钢系统设计

内蒙古科技大学设计说明书内蒙古科技大学本科生毕业设计说明书题目：年产400万吨合格铸坯转炉炼钢工程——转炉系统主体设计学生姓名：学号：专业：冶金工程班级：指导教师：内蒙古科技大学设计说明书I摘要为满足市场需要，本设计为：年产400万吨合格铸坯转炉炼钢工程——转炉主体设计。本设计在生产其他合格铸坯的情况下以耐候钢作为主要生产的高附加值钢种。从高炉铁水进入炼钢厂开始的冶炼工艺为：铁水预处理分装混铁车转炉底吹氩LF炉精炼板坯连铸中宽带热轧机组粗轧精轧控制冷却卷取取样检验包装缴库，通过这一工艺流程生产出合格的耐候钢板坯。本设计选用两座200吨转炉，并进行了炉型尺寸、金属结构、倾动机构、转炉供氧系统、散料系统、烟气净化系统等方面的计算，以及铁水预处理系统、精炼系统、连铸系统进行了简要设计和论述。之后确定了车间的布置，然后进行车间计算和所用设备的规格和数量的设计，在此基础上进行车间尺寸计算，确定各层平台标高。最后对转炉车间设计的环境和安全要求进行说明。设计中为了更加形象的阐述转炉炼钢工艺以及相关设备结构，添加了大量图形关键词：炼钢炉型设计，耐候钢，铁水供应，冶炼工艺流程内蒙古科技大学设计说明书IIABSTRACTTomeettheneedsofthemarket,thisdesignis:anannualoutputof400milliontonsofqualifiedbilletconvertersteelmakingproject-themaindesignoftheconvertersystem.Thedesigninthecaseoftheproductionofotherqualifiedslabweatheringsteelasthemainproductionofhighvalue-addedsteel.Fromtheblastfurnacehotmetalintosteelplantbegansmeltingprocessasfollows:HotMetalPretreatmentTorpedocarsConverterendofblowingargonLFRefiningSlabContinuousCastingThehot-rolledunitoftheinbroadbandRoughrollingFinishingControlledcoolingTake-upSamplingandtestingPackageTreasury,Throughthisprocesstoproducequalifiedweatheringsteelplateblanks.Thisdesignusestwo200-tonconverter,andfurnacesize,themetalstructure,tiltingmechanism,thecalculationoftheconverteroxygensupplysystem,bulksystem,fluegaspurificationsystem,hotmetalpretreatmentsystem,refiningthesystem,castingabriefdesignanddiscussion.Determinedafterthelayoutoftheworkshop,workshopcalculationandspecificationsoftheequipmentusedandthenumberofdesign,onthisbasis,theworkshopsizecalculationtodeterminetheelevationofeachfloorplatform.Finally,theenvironmentalandsafetyrequirementsoftheconverterplantdesigndescription.Moreimagedescribedtheconvertersteelmakingprocessandrelatedequipment,structuresinthedesign,addalargenumberofgraphicsKeyword:Steel-makingfurnacedesign,weatheringsteel,hotmetalsupply,thesmeltingprocess内蒙古科技大学设计说明书III目录摘要.................................................................................................................................................................IABSTRACT....................................................................................................................................................II第一章文献综述...........................................................................................................................................11.1转炉的发展历程................................................................................................................................11.2我国转炉炼钢现状...........................................................................................................................11.2.1转炉钢产量............................................................................................................................11.2.2转炉炼钢原材料....................................................................................................................31.3我国转炉炼钢发展现状...................................................................................................................41.3.1发展条件和机遇....................................................................................................................41.3.2转炉炼钢的发展与钢产量的增长方式................................................................................61.4转炉自动化技术...............................................................................................................................71.4.1介绍.......................................................................................................................................71.4.2技术分类................................................................................................................................71.5转炉炼钢存在脱氧工艺的问题.......................................................................................................81.5.1普碳钢脱氧工艺的现状及不足............................................................................................81.5.2低碳钢脱氧工艺的现状及不足............................................................................................81.5.3RH轻处理钢脱氧工艺的现状及不足..................................................................................91.5.4超低碳钢脱氧工艺的现状及不足........................................................................................91.6耐候钢介绍....................................................................................................................................101.6.1简介.....................................................................................................................................101.6.2耐候钢的发展......................................................................................................................101.6.3耐候钢的成分......................................................................................................................111.6.4冶炼工艺..............................................................................................................................141.8结论.......................................................................................................................................