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1、ProcessMetallurgyModellingoftheSteel/SlagInterfaceinaContinuousCastingTundish1,2,3)3)3)HenrikSolhed,LageJonsson,PärJönsson1)2)3)MEFOS,Box812,97125Luleå,Sweden;DivisionofPhysics,LuleåUniversityofTechnology,97187Sweden;DivisionofAppliedProcessMetallurgy,KTH,10044Stockholm,Sweden.Itisveryimpor
2、tanttounderstandtheunderlyingphysicalphenomenaatthesteel/slaginterfaceinacontinuouscastingtundishinordertocontrolreoxidationanddeoxidationphenomenathatcanoccur.Aimingtoinvestigateprobablesourcesofexogenousinclusionsoriginatingfromthecoveringslag,anexistingmathematicalmodelofthetundishwasaug
3、mentedtoincludekeyphysicalparametersneededforthepredictionofthephysicalbehaviourofsteel/slagmixingphenomena.Resultsshowedarecirculationflowintheinletregiontoberesponsibleforboththeentrainmentofsteeldropsintotheslagandslagfragmentsintothesteel.Thehighestconcentrationofslaginthesteelwasfoundt
4、obeintheareabehindtheinletwhereslagfragmentsizesaresmallerduetoahighdegreeofturbulentenergydissipation.Likewise,higherconcentrationsofsteelintheslag,consistingofsmallersteeldroplets,wereonlyfoundintheinletregionandalongthewalls.Theresultsindicatethatonlysmallslagfragmentsofapproximately10-5
5、0micronsfromthecoveringslagreachtheoutlet.Keywords:tundish,cleansteel,steel,slag,fluidflow,mixing,interactions,mathematicalmodelling,sampling,microscopyDOI:10.2374/SRI07SP111-79-2008-348;submittedon5September2007,acceptedon8October2007Introduction“Results”and“Discussion”ofthispaperisintende
6、dtohelpthereaderobtainknowledgewhichcanbeusedforaInordertooptimizethetundishprocess,itisnecessaryspecificsituation.tohaveageneralunderstandingofthephenomenathatInthefirstpartofthepaper,themathematicalmodelisoccurduringcasting.Recently,MazumdarandGuthrieetpresented.Next,theresultsarepresente
7、danddiscussed.al.[1]presentedareviewcoveringmodellingeffortsofcontinuous-castingsystems.TheypointedoutthatamodernsteelmakingtundishshouldbedesignedtoprovideModelTheoriesmaximumopportunityforcarryingoutvariousmetal-lurgicaloperationssuchasinclusionseparat
