耐火材料英语论文.doc

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1、耐火材料英语论文熔渣对镁碳耐火材料的腐蚀增加碳含量的影响学校：专业：THEINFLUENCEOFCARBONCONTENTONTI1ECORROSIONOFMGO-CREFRACTORYMATERIALCAUSEDBYACIDAXDALKALINELADLESLAGThispaperdescribesaninvestigationoftheinfluenceofincreasingcarboncontentonthecorrosionofMgO~Crefractorymaterialbymoltenslag

2、.Therefractorymaterialcontainedmassfractionof98%MgO,approximate!y2%Fe203,andgradedquantitiesfrom3%to18%C.Thecorrosionwasinvestigatedinmeltsofreductionladleslagsatatemperatureof1600°Cin1aboratoryconditions.Asampleofrefractorymaterialwithdimensionsof10X10X10

3、0mmwassubmergedintothemoltenslagandexposedtothecorrosiveeffectoftheslagfor60min.Aftertheexposeoftherefractorymaterialtheslagwascooleddownandsubmittedtoachemicalanalysis.AfteracomparisonoftheMgOcontentintheslagbeforeandafterthecorrosiontesttheamountofMgOcon

4、tentinthemeltwasdeterminedandthedegreeofcorrosionoftherefractorymaterialwasquantified.Theexperimentswererealisedusingfinalslagsfromtheladlefurnaco(LF),stronglyalkalineslagw(Ca0)/w(Si02)=4-43,andalsoacidicslagsw(Ca0)/w(SiO2)=0.94withdifferentcontentsofCaF2.

5、TheworkwascarriedoutwithintheframeoftheprojectsEUREKAE!3580andTMPULSFI-IM4/110.RESULTSThechemicalcompositionoftheslagsbeforetheexposureisgivenintheTable1.Table1showsthattheacidicslagcontainsverylittleoftheCaF2(w=0・82%),andthatthealkalineslagcontains1.18%Ca

6、F2,addedtoincreaseitsfluidity.Table1:ChemicalcompositionandalkalinityoftheslagsusedforthecorrosiontestTabela1:Kemi'rmsestavainbazi~nost'linder,kistabi1iuporabljenizapreizkusekorozijeTheMgOcontentoftheslagsafterexposuretotherefractorymaterialisshowninTables

7、2and3.ThetablesalsocontainincrementsoftheMgOcontentandtheincrementsrelatedtotheinitialMgOcontentintheslags(MgO)•Thesixtestedsamplesofrefractorymaterialdifferedonlyintermsofthecarboncontent,gradedfrom3%to18%.However,sample5%contained15%Cinadditiontoanantiox

8、idant・Table2:ChangestotheMgOcontentinanacidicslagfordifferentcarboncontentsintherefractorymaterialTabela2:SpremembevsebnostiMgOvkislilindriprirazli^nivsebnostiogljikavognjevzdrnemmaterialuTable3:ChangestotheM