以粉煤灰为基础的微晶玻璃的制备

3,,(,410083):TiO2Fe2O350wt%Na2O-CaO-SiO2(DTA),X(XRD)(SEM):(1),TiO2Fe2O3,Na2O-CaO-SiO2;(2),NaAlSiO4Ca2Al2SiO7,,:;;;:TQ171.171:A:100026532(2001)03200382031,[1,2],,,[3],;,[4,5,6],[7],,,22.1(50wt%),,1,,1450,1h,560,2h,12.2(DTA)TAS-100DTA,aAl2O3,20ömin,,2.3X3:2000211216:(1960-),,,320016MultipurposeUtilizationofMineralResourcesNo.3June2001©1995-2005TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.1öwt%SiO2Al2O3CaOMgONa2OFe2O3+Cr2O3+ZnO+Li2O+TiO2138.5118.0217.6312.148.744.96237.4817.1717.9012.059.366.043014XX2.4X-65033.1112,1,,,,[8],1,1843,865;2778,787,12865787,50100,1740,2h,865,3h,;2700,2h,787,3h,13.2212X,,,,,JCPDS,1NaAlSiO4Ca2Al2SiO7,,MgSiO4;2Ca2Al2SiO7NaAlSiO4,,Mg2SiO4Al2O3TiO2Cr2O3ZnOFe2O3Li2O2X3.33,3,,X,,1,;2,,,,4,933:©1995-2005TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.3(a)1(1500),(b)1(3000),(c)2(1500)50wt%,Na2O-CaO-SiO2;;TiO2Fe2O3Cr2O3ZnOLi2O,1.[J].,2000(4):292,.[J].,1992(3):28313.[J].,2000(4):9154M.Pelino,C.Cantalini,F.Vegloetc.Crystallizationofglassesobtainedbyrecyclinggoethiteindustrialwastestoproduceglass-ceramicsmaterial,JMat.Sci;1994(29):208720905,.[J].,1994(4):476,,,.[J].,2000,28(4):9147.[J].,1995(8):39428(),,,,.[M].:,1986.3Preparationoftheglass-ceramicsbasedontheflyashLUAn2xian,TAOHui2jin,HUANGLi(CentralSouthUniversity,Changsha,Hunan,China)Abstract:ThepreparationofthebasicglassoftheNa2O-CaO-SiO2systemwithabove50wt%flyashcontentandTiO2öFe2O3asnucleationagenthasbeeninvestigatedbyadoptingconventionalmeltquenchingtechnology.ThenucleationandthecrystallizationtemperaturesaredeterminedbyusingDTA.Thephaseandthemicrostructureoftheglass-ceramicsareinvestigatedaccordingtotheresultsoftheX-raydiffractionanalysisandtheSEM.Theresultsshowthat,whenintroducingtheflyashasmainrawmaterial,theglassoftheNa2O-CaO-SiO2systemcanbeobtained;yellowcolororblackcolorglass2ceramicscontainingmaincrystalphasessuchasNaAlSiO4,Ca2Al2SiO7etc.maybeobtainedbyusingtwo2stageheat2treatmentmethod.TheSEMphotographsshowthatthemicro2crystalsintheglass2ceramicstructurearelumpyshapeandtheglassisalmostcrystallizedcompletely.Keywords:Flyash;Glass2ceramic;Buildingmaterial;Preparation042001©1995-2005TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.