渣和方鎂石-尖晶石材料的相互作用研究.pdf

1、武漢科技大學(xué)碩士學(xué)位論文渣和方鎂石尖晶石材料的相互作用研究姓名：孫嫚嫚申請學(xué)位級別：碩士專業(yè)：材料學(xué)指導(dǎo)教師：韓兵強20111203第1I頁武漢科技大學(xué)碩士學(xué)位論文AbstractPericlasespinelrefractoriesisstableinreductionandoxidationconditiongooddurabilityandnoCrenvironmentalpollutionproblems，SOitiswidel

2、yusedincementkiInglassfurnaceregeneratorsteelladlelininglimekilnandSOonHoweverthereisnosystematiccomparisonaboutcorrosionprocessunderdifferentconditionsInthispaperspinelpreparedbydifferentwayWasintroducedintomagnesiaspin

3、elmaterialstodiscusstheirdifferencesinphysicalpropertiesandslagcorrosionmechanismFirstofall，differencesinphysicalpropertiesofdifferentmagnesiaspinelmaterialarestudied，theresultsshowthattheinsitusynthesisMgAl204inthemater

4、ialswilloptimizethematrixstructurebutdifferencesofexpansioncoefficientbetweenpericlaseandcorundumwilloztusemoremicrocracks，thusreducethedensityofthematerial，causingalargelinearchangeandhighapparentporositytherebyreduceth

5、ematerialfromthestructureofantierosionabilitySecondlyeffectsofdifferentC／SratioofCaOA1203一Si02systemonslagcorrosionofmagnesiaspinelmaterialsareresearchedfurthennore，F(xiàn)actSagethermodynamicsoftwareWasusedtosimulatedtheproce

6、ssesTheresultsshowthatpericlasespinelmaterialsshowhighresistanceabilitytohi曲basieityslagLowmeltingsilicateslagpenetrateintothematerialmainlyalongthematrixphaseandgrainboundariesTheMgOsubstrateparticlesdissolvedintothesla

7、gandreactedwithintheA1203intheslagtoformsecondaryspinelattheinterfaceofslag／Refractory；slagcontainingCaO，Si02materialscontinuetopenetrateintotheinnerandformCa3MgSi20s，Ca2Si04，Ca2Si04，M92Si04andotherphasesCa3M掣地Olophaseap

8、pearsinthecalculationofFACTsagebutnotfoundinthemicrostructureobservationofthesample；Ca3Si05phaseappearsinthemicrostructurebutdoesnotappearinthecalculationWhenFe203，magnesiumandotherimpuritiesaeaddedintotheslagmagnesiawil

9、labsorbtheFe203slagformatsMgFe204；AddedMgOwillreactA1203inslagtoform249tmMgAl204particles，whichfillinthepericlaseparticles嬲theslagflowsTherebyreducestheslagflowlatelowersthecorrosionrateKeywords：Magnesiaspinel，Corrosion，