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(,201900)(,100083),,,5%10%20%,AnInvestigationonZnOBearingDustsRecyclingUtilizationforArcFurnaceSlagFoamingWangTaoandZhuLixin(TechnicalCenter,BaoshanIronandSteelCoLtd,Shanghai201900)ChenWeiqing,LiangJunandGuoHanjie(UniversityofScienceandTechnology,Beijing100083)AbstractTheeffectofaddingamountofdustsandpitchcokeonslagfoamingheightandmaintainingtimehasbeeninvestigatedbyaddingpitchcokewithZnObearingblastfurnacedust,convertersecondaryremovingdustandarcfurnacedustatBaoshanforarcfurnaceslagfoaming.Thetestresultsshowedthataddeddustswasfavourabletoarcfurnaceslagfoaming,andfoamingeffectwasoptimumwithadding5%10%pitchcokeand20%dustsbriquetteinslag.MaterialIndexZnOBearingDust,ArcFurnace,FoamingSlag,C,FeO,,,1,,(50mm120mm),,300g,,30g,,,,,(5mm),,,,,1,222.11,6g(20%),33,,;,,52245Vol.24.No.520039SPECIALSTEELSeptember2003:,,1000831P%Table1IngredientofdustsandarcfurnaceslagatBaoshanIronandSteelP%FeOMFeTFeSiO2MnOCaOMgOAl2O3CZnPbCaOPSiO23.410.3956.434.750.342.790.731.6312.620.0970.130.5916.415.7451.565.782.3213.017.853.123.584.280.792.256.060.1953.432.613.577.902.980.981.072.900.423.03--37.688.96-32.103.190.96---3.582Table2Testeddustsbriquetteratioandfoamingperfor2manceP%P%PmmPs1100005--10085210000--3.7512060310000-20-125874602020--3.751151323Table3EffectofaddingsequenceofblastfurnacedustbriquetteandpitchcokeonslagfoamingheightPmm120100105602.2,22,20%,,,[1]3.75%,,,,20%20%3175%,,,FeO,C5%,,(3)2.3,20%(1),1(ac),5%,;10%,,5%10%,1(a)(b);(c)(d)Fig.1Effectofaddingamountofpitchcoke(a)andblastfurnacedustbriquette(b)onhighestheightofslagfoaming;andeffectofaddingamountofpitchcoke(c)andblastfurnacedustbriquette(d)onmaintainingtimeathighestheightofslagfoaming62242.410%,(1),1(bd),,,(20%),,,,,20%,3:(1)FeO;(2);(3),,,[1],,FeO,FeO:,FeO;,FeO,,1(bd),,,,,,,,,,,,,,,,,;,,1(a),5%,5%,,FeOCO,,,,,,,,5%,(1(c))4,20%5%10%,1FruehanRJ.ElectricFurnaceConferenceProceedings,ISS,U.S.A,1987,345,,35,1993:2003203231Ms120tGCr15725: