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1、华中科技大学硕士学位论文钢渣熔制微晶玻璃技术研究姓名：饶磊申请学位级别：硕士专业：环境工程指导教师：杨家宽20070609华中科技大学硕士学位论文AbstractSteelslagisamajorsolidwasteinsteelmetallurgyindustry.Thiswastepresentsseriousproblemsofstoringsiteofhugeareasandenvironmentalpollution.Withthedevelopmentofeconomyandthedecreaseof
2、source,howtoutilizesteelslagasasourceisbecominganimportantprogramwhenthegovernmentisencouragingcleanproductandcycliceconomy.Inthispaper,theglass-ceramicsthatwaspreparedfromsteelslaghasbeenintroducedandanideathatsteelslaginhightemperatureisdirectlymouldhasbeen
3、suggested.Accordingtotheseideaswecanproduceglass-ceramicstosaveenergyandsource.Inthispaper,moreattentionhasbeenpaytothepreparationofsteelslagwithdifferentheattreatingschedulehavedifferentinfluenceonthepropertiesandmicrostructureoftheglass-ceramics.ThroughtheD
4、TA,XRDandSEMalongwiththeresultofpropertiestest,arelativebetternucleation,quantityandheattreatingschedulewerechoose.TheexperimentresultsshowthatwhenTiO2asnucleationisabout2.2%,nucleationtemperatureis700℃andtimeis1hour;crystallizationtemperatureis940℃andtimeis2
5、hour;intheseadditions,thebestpropertiesareachieved.Themicrohardnessis791.8MPa,thebendingstrengthis150MPa,thealkaliuricabilityisbetterthanaciduricability,thecontentofsteelslaginthissampleis47.5%.Accordingtothemicrocosmicanalysis,themaincrystalphaseoftheglass-c
6、eramicsisdiopsideCa（Fe,Mg）Si2O6,withtheminorcrystalphasearealbiteNaAlSi3O8和Na2Ca（CO3）2·5H2O.Diopsideisthemostimportantfactortothemechanicalproperties.Whenitscontentishigher,themechanicalpropertiesaremoreexcellent.Meanwhile,theappearanceofthemaincrystalisalsoi
7、mportanttotheproperties.WhenthemaincrystalparticlesarecompactedandmixedwithgloboseandcylindricalthepropertiesarebetterThetechnicalthathotsteelslagisdirectlymouldhasbeendiscussed.wemadeaelementaryeconomicsanalysistoaprogrambasedon100~150thousandsq.m.glass-cera
8、micsareproducedeveryyear:totalinvestmenttoprojectis63,400,000RMB,theperiodforreturnoninvestmentisabout2~3yearsandtheprofitmarginofcapitalreaches32.85%.Keywords:steelslagglass-ceramicsnucl
