简介：Flyashfromamunicipalsolidwasteincinerator(MSWI)withoutpreprocessing(originalflyash,OFA)wasmeltedbyadirectcurrent(DC)plasmaarcfurnacetoinvestigatehowthefeedformsgovernedtheresults.Dioxinsinfluegasfromstackandbag-filterash(BFA)weredetected.ThedistributionofheavymetalsofPb,Cd,As,andCralongthefluegasprocesssystemwasanalyzed.Throughacomparisonoftheresultsfordioxinsandheavymetalsinthisstudyandpreviouswork,carrying-overofflyashparticleswiththefluegasstreamcanbededuced.BasedonthemagneticinductionequationandNavier-Stokesequations,amagnetohydrodynamic(MHD)modelfortheplasmaarcwasdevelopedtodescribetheparticle-carryingeffect.Theresultsindicatethat,a.whenmelted,thefeedformsofMSWIflyashaffecttheresultssignificantly;b.itisnotpreferabletomeltMSWIflyashdirectly,andeffortsshouldbemadetolimitthemasstransferofOFAfromtheplasmafurnace.