铁尾矿制砖研究与利用现状

SerialNo.474October.2008EXPRESSINFORMATIONOFMININGINDUSTRY47420081010(1986-),,430081():,,,:;;:TD926.4:A:100925683(2008)1020014204ResearchandCurrentSituationofUtilizationofBrickMakingbyIronOreTailingsLiuLuZhengWeiLiPangZhuCongLing(SchoolofResourceandEnvironmentalEngineering,WuhanUniversityofScienceandTechnology)Abstract:Theresourcestateofirontailingsispresented.Onthebasisofanalysisofcompositionsandcharacteristicsoftheironoretailings,thecurrentsituationofstudyandachievementsofutilizingtheirontailingstomakevariouskindsofbricksareintroduced.Itshowsthatutilizingtheironoretailingstomakebricksisaneffectivewaytorealizedevelopmentandutilizationofsecondaryresourcesandtopro2duceproductswithhighadditionalvalue.Keywords:Ironoretailing;Secondaryresource;Comprehensiveutilization,,,,,,,,60%,,,,,,,,,,,,,,,1,,,SiO2Al2O3Fe2O3CaOMgO,,11,SiO2,,Ca(OH)2[1],,Ca(OH)2[2],,,,,,,,,41©1994-2011ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.(%)SiO2Al2O3Fe2O3CaOMgOTFeMnOSO3P2O5[3]72.796.086.204.853.164.480.0850.10.16[4]27.887.2725.014.621.78()[5]50.3810.277.8010.155.241.98[6]75.910.651.821.5111.69[7]36.475.328.2719.4813.210.54[8]43.5812.211.02.717.540.406[9]21.066.570.50.5038.000.640.0180.057[10]70.351.062.442.740.10.033[11]31.986.4910.2330.7713.840.123.890.21[12]74.921.8010.203.273.690.33[13]63.075.6013.828.180.2322.1,100,,,,,,,CSHCAH[7][14],,()()()(AS;),28d,28.30MPa,5.63MPaAl2O3,1[4],,JA1JA2,,,24.89MPa,GB510122003GB656622001,[7],,,«50mm20mm2.261.51.517111[10],,K,20%30%,1(:C3CaO;SSiO2;AAl2O3;FFe2O3):2C3S+6H2O=3CaO2SiO23H2O+3Ca(OH)22C2S+4H2O=3CaO2SiO23H2O+Ca(OH)2C3A+6H2O=3CaOAl2O36H2OC4AF+7H2O=3CaOAl2O36H2O+CaOFe2O3H2O3CaOAl2O36H2O+3CaSO42H2O+20H2O=C3A3CaSO43H2OxCa(OH)2+Al2O3+mH2O=xCaOAl2O3mH2OyCa(OH)2+SiO2+nH2O=yCaOSiO2nH2OCa(OH)2Al2O3SiO2,,,,,,,51:20081010©1994-2011ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.[15]JC/T1990296,()(),25%,,35%,,;;,(1),25%,,25%,25%(2),[16],;,,,,,,,,,,,,,,,,,[17],,,,,,[18],,,,,,,50%[19],GB1354422000,50%2.4,,,,,(,)[5],=2510658%,,425#TNTHTBFNTNC,FNTNCTNTBTH,[8],,22/%/%/%/MPa46.238.515.331.154013.346.724.9,,,,,,,,,,,,2.5[20],,11h(0.5h,2.5h,8h1.6MPa(190)),2.5h,,,2,,,50%,2.6,6147420081010©1994-2011ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.[21],,,,,,,,,,2[22],,,;,30%40%50%60%(),,,,3,[23],3,,,8509001000[24],:16%18%,15%17%3,,,,,,3,,,,,,,,,,,,,:[1],,.[M].:,2002:115118.[2]MichaelJ.Mankosa,RobertLanerandParthaVenkatramar.Pro2cessingTechnologyusedtoRecoverSecondaryMaterials.MiningEngineering,1997(12):4651.[3],,.[J].,2007(3):8587.[4],,.[J].,2007,370(4):8184.[5],,.[J].,2003,330(12):5659.[6],,.[J].,2005(5):2225.[7],,.[J].,2007,455(3):3335.[8],.[J].,2007(1);6466.[9].[J].,2003(4);4041.[10].[J].,2006(2):4244.[11].[J].,2006,362(8):7678.[12],.[J].,1999(4):342347.[13].[J].,2007,458(6):2124.[14],.[J].,2007(4):4144.[15].[J].,2004(4):5255.[16].[J].,(13):276276.[17],.[J].,2003(1):6466.71:20081010©1994-2011ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.():,,,:;;;;:X591:A:100925683(2008)1020018204AdvancesandProspectofStudyingImpactofUraniumMineSolidWasteonEnvironmentFengJiguang(SchoolofCivilandEnvironmentalEngineering,EastChinaInstituteofTechnology)Abstract:Accordingtotheparticularityofuraniumminesolidwaste,thegenesisandinfluencefac2torsofacidicwastewaterformedbysulfidemineralswerediscussed.Theconformationofheavymetalsinsoilandtheirimpactsontheenvironmentweredescribed,andthemethodstocontrolpollutionweresetforward.Keywords:Uraniummine;Pyrite;Acidicminewastewater;Metalconformation;Phytoremediation,,,,,,,,,,,,[1],,,,11530,2/3,1/3,,[2],::,,1t46t,68t;:,1t,0.51.2t;:,(1980-),,,344000[18].[J].(B),2005(02):1718.[19],,.[J].,2007(7):2126.[20],,.[J].,2006(4):3941.[21].[J].,2007(11):55.[22].[J].,2000,28(3):2730.[23].[J].,2004(6):4144.[24],,.[J].,2006,26(2):4547.(2008206216)81©1994-2011ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.