简介：Inaflowinjectionseparationandpreconcentrationsystemincorporatingamicrocolumn,theadsorptionbehavior(effectofpH,kineticadsorptioncapacity)ofmetalionsCu^2+,Cr^3+,Mn^2+,Ni^2+,La^3+,Eu^3+,Ga^3+,Mo(Ⅵ)andW(Ⅵ)onTiO2owderwithdifferentcrystalstructureandparticlediameterwasstudiedandcompared.Inaddition,theechanismoftheadsorptionofmetalionsonTiO2owderwasexplored.TheresultsshowthatcrystaltructureandparticlediameteroftheTi02powderwillefinitelyaffecttheadsorptioncapacityofmetalsont.

简介：Owingtoacertainangleexistingbetweenabeltconveyorandtheparallelhoppers,andthehopperslocalizingawayfromthecenterlinesofablastfurnace,particlessizesegregationislikelytohappeninabell-lesstopblastfurnacewithparallelhoppers.Masteringthelawofparticlessizesegregationinhopperscouldhelptochoosebetterchargingparametersandoptimizeproductionandtechnicalindices.Asforthepreviousworksonburdensegregationatabell-lesstopblastfurnacewithparallelhoppers,moreattentionwaspaidtothefallingpointsegregationandthecircumferentialmassflowsegregationwhilechargingfromthetiltingchute,butignoringtheparticlesizesegregationinburdenhoppersasburdenfallsfromabeltconveyor,whichistherightbasisofanalyzingtheformer,andplaysasignificantroleincontrollingthegasdistributionintheblastfurnace.Thepresentworktakesternarymixturesofcokeinthreedifferentparticlesizestosimulatethesizesegregationofthecokechargedintothehoppersbyexperiments.Theeffectofthemainstrikingpointonsizesegregationisalsoinvestigated.TheresearchshowsthatthereexistsagoodlinearrelationbetweensegregationcoefficientkandthedimensionlessmainstrikingpointwhenusingtheequationC=C0ktoexpressthedegreeofsizesegregationinhoppers.Thelinearrelationisproposedforthefirsttimeandprovidesanewwaytopredictthesizesegregationinhoppers,whichformsatheoreticalbasisandtechnicalsupportforreducingthesizesegregationdegreeinhoppers.

简介：Thenanosizedparticlematerialsofdoped-TiO2withY2O3werepreparedbymeansofsol-geltechniqueforuseinelectrorheological(ER)fluids,andtheircrystalstructuresweremeasuredbyX-raydiffraction(XRD)analysis.TocomparewiththepureTiO2,adistinctenhancementintheshearstressunderdcelectricfieldwasfoundbyusingsuchmaterials.Thiscanbeexplainedbytheincreaseofthedielectriclossanddielectricconstantatlowfrequency.TheeffectsofthecrystalstructureoftheparticlesonthedielectricpropertyandERperformanceofmaterialswereinvestigated.