铁矿石中磁性铁的测定方法研究

:1000-7571(2005)03-0058-033,,,,(,338028):WFC23,,,RSD015%,9911%10011%,,,:,,,,:O655123:B:2004-06-08,,(),,,300010-6cm3/g,,,900100[1]01074mm3(1):011000g,20mL,(),,,,,,;(2):011000g100mL,20mL,,(900100),,,,,,;(3)WFC23:011000g100mL,,,,,,,,,180,,,,,,,3%4%,WFC23,1111WFC23():,,,,(1);H66005(8525320056MetallurgicalAnalysisVol.25,No.3June,2005©1994-2008ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.)GB673015-1986-1Fig11Diagramofmagneticselector11;21;31;41;51;61;71;81112,GB673015-1986221101125,01074mm,,11Table1Influenceofsamplegranularityw/%(mm)Screensize010740112535145,35174,3516635175,35163,3514135166,35158,3517135125,35166,35144Found35150,35159,3516235127,35177,3515835162,3516735171,35152Average3516235154Extremedifference01290152RSD(%)01240151:01074mm,01125mm,,01074mm,,:,,,,(2),,(),():50mL,,,,,,22Table2Determinationresultsofmagnetironafterpretreatmentofsamplewithultrasonicw/%SampleNo1FoundFoundbyCentralSouthInstituteofGeologyFU02321142714027128FV07361883413234131OG04541825014650138:WFC23212,,:912mL/min,15mL/min,,,,,,,9525320056MetallurgicalAnalysisVol.25,No.3June,2005©1994-2008ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.:519mm,;319mm(),,21411WFC23,33Table3Comparisonofanalyticalresultsofmagnetironinsamplesw/%SampleNo1CertifiedFoundGBW07272461946194,461984618545170,4618046125/35165,351713516135160,3419035112,,2153,,44Table4Precisiontestw/%SampleNo1AverageExtremedifference(%)RSD1191490124013623516601290126346183013201254015%,216012000g19151%5,010200,010400,010600,010800,011000gGBW07272(MFe4619%),9911%10011%3WFC23,,,,,:[1].WFC21[J].,1984,3:91ResearchofdeterminationmethodofmagnetironcontentinironoreZENGBo,DUANQing2guo,ZHANGYu2bin,XUAi2ping,QIUPing2hua(CenterAnalysisLaboratoryofXinyuSteel&IronCo.Ltd.,Xinyu338028,China)Abstract:TheanalyticalconditionsforthedeterminationofmagnetironinironorebyWFC23typemagnet2icselectorwerestudied1Thesamplewaspretreatedwithultrasonic.Theproposedmethodandartificialmagneticseparationmethodwereusedforthedeterminationofmagnetironinastandardsampleofironore1Determinationresultsofthismethodwerehigherthanthatofartificialmagneticseparationmethodandwereclosetocertifiedvalue1TheRSDforthismethodwaslessthan015%andrecoverywasintherangeof9911%-10011%1Ithasbeenappliedtothedeterminationofmagnetironinironorewithsatisfactoryre2sults1Keywords:magnetiron;magneticfieldstrength;magneticselector;granularity;ultrasonic0625320056MetallurgicalAnalysisVol.25,No.3June,2005©1994-2008ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.