新型澳大利亚矿粉烧结性能研究VIP免费

澳大利亚新型进口矿粉烧结性能实验研究摘要近年我国钢铁产量的大幅度增长，对铁矿石的需求量迅猛增加，但是，铁矿石价格连续大幅上涨，带来高昂的烧结矿成本和铁水成本。钢厂烧结投产以来，烧结矿产量及成本压力一直较大。本文结合钢厂烧结现有的原料条件，在实验室进行了利用澳大利亚进口的新型铁矿粉A矿粉烧结杯试验，烧结杯试验结果表明：（1）A矿粉满足钢厂烧结厂目前在碱度R=2.0、MgO≥2.5%条件下的烧结生产要求，烧结过程中加入一定量的A矿粉可以在一定程度上改善烧结矿的综合性能指标。（2）烧结过程中配加5%~15%的A矿粉时烧结矿的冶金性能指标可以保持在较为理想的水平；（3）烧结过程配加A矿粉后烧结矿的显微结构发生变化，矿相中还原性能优良的铁酸钙比例增加。关键词：烧结杯试验；显微结构；冶金性能ABSTRACTInrecentyears,withthegrowthofChina'ssteelproduction,substantialgrowthindemandforironoreincreasedrapidly,butthecontinuedsharpriseinironoreprices,resultedinhighcostsofthesinteringandthemoltenironore.SinceQingGangsinteringplantputintoproduction,outputandcostpressureshavebeensignificant.Inthispaper,thelaboratorytestofAironoreasoneofironorefineswasconductedinthesinterpotontheconditionsoftheexistingrawmaterialsinQingGang.Experimentalresultsshowthat:（1）AmineralpowdermeetproductionrequirementsofQingdaosteelplantwhenitisundertheconditionsofR=2.0、MgO≥2.5%，addingsomeAmineralpowdercanhelpimprovethesintercomprehensiveEextoacertainextentinsinterprocess.（2）ThesinterperformanceEexcanmaintainaideallevelwhen5%~15%Amineralpowderwereaddedtoinprocess.（3）ThemicrostructureofsintermixturechangedandthecalciumferritewhichhaveexcellentreductionpropertyincreasedintheproportionwhenAmineralpowderwereaddedto.Keywords:Sinterpottest；Microstructure；Metallurgyperformance目录摘要..............................................................IABSTRACT..................................................................II1文献综述..........................................................-1-1.1铁矿石资源的现状.............................................-1-1.1.1国内铁矿石资源现状.......................................-1-1.1.2国外铁矿石资源现状.......................................-3-1.2铁矿粉烧结的理论分析.........................................-3-1.2.1烧结成矿机理.............................................-3-1.2.2烧结矿的矿物组成与结构及其对质量的影响.................-5-1.3烧结工艺的发展及意义.........................................-6-1.4我国烧结生产的现状...........................................-8-1.5高品质烧结矿生产工艺分析.....................................-12-1.5.1优化配矿.................................................-12-1.5.2小球烧结.................................................-13-1.5.3热风烧结.................................................-13-1.5.4低温烧结.................................................-14-1.5.5厚料层烧结...............................................-14-1.5.6高碱度烧结...............................................-16-1.5.7硅含量对烧结矿质量的影响................................-16-2A矿粉烧结实验研究...............................................-18-2.1实验方法及实验设备...........................................-18-2.1.1实验方法.................................................-18-2.1.2实验流程.................................................-22-2.1.3实验设备.................................................-22-2.2实验用原燃料性能分析.........................................-24-2.2.1实验用原燃料成分分...