简介：Dryseparationofironmineralfromlow-gradecoal-serieskaolininHubeiProvinceofChinawasinvestigated.ThestructureandchemicalcompositionofthekaolinoreweredeterminedbyX-raydiffraction（XRD）andX-rayFluorescence（XRF）analyses.Thenarrowparticlesizerangeclassification,drymagneticseparationandcalcinationwerecarriedouttoevaluatetheparticlesizedistribution,andtherelationbetweenthecontentofironandthewhiteness.Experimentalresultsrevealedthatthehighestcontentofiron（3.70%）inkaolinorewasintheparticlesizerangefrom60to74μm,andpyritewasthemainoccurrenceofironinthekaolinore.Drymagneticseparationshowedthattheremovalrateofironinkaolinorecouldbeincreasedobviouslyaftercalcination,andtherateofironremovalwas60%intheparticlesizerangefrom60to74μm.Aspyritecanbetransformedintohematitethroughcalcination,thermodynamicstudiesandXRDanalysisshowedthatthemaximumcontentofhematitewasobtainedat900℃,whichwouldbemorebeneficialtomagneticseparation.