第4期 丰文祥等:中间包吹氩去除钢水夹杂物 ,431. 影响.在本研究条件下,合适的氩气流量为6L· (丰文祥,陈伟庆,赵继增.中间包吹氩去除夹杂物的模拟研 mn,与不吹氩相比,在注流区内吹氩,钢中总氧含 究.钢铁,200944(10):21) [4]Feng W X.Zhao JZ Chen W Q.et al One Kind of Tundish 量的降低和夹杂物的去除率均可提高10%左右;然 Purging Dam:China Patent ZL200520142243 5.2005-12-01 而15Lmn大流量吹氩将会明显增加钢中总氧含 (丰文祥,赵继增,陈伟庆,等。一种中间包吹气式挡坝:中 量和夹杂物数量, 国专利,ZI200520142243.52005-12-01) (3)中间包吹氩去除夹杂物与Stokes碰撞和湍 [5]Feng W X.Chen W Q.Zhao JZ Properties ofAbOs based per 流碰撞有关,在注流区内吹氩,强大的湍流强度可把 meable pomous purging plug made by casting Refractories 2009, 氩气泡击碎成弥散细小气泡,大量弥散小气泡在钢 43(3):218 液中上浮,不但增加了夹杂物之间的碰撞概率,而且 (律文祥,陈伟庆,赵继增·浇注成型刚玉质弥散型透气砖的 性能研究.耐火材料,200943(3):218) 增加了夹杂物与气泡之间的碰撞概率,其结果是增 [6]Saffnan PG.Tumer J S On the collision of dmops in tudbulent 大了夹杂物的粒径,促进了夹杂物的上浮去除 clouds J Fli Mech 1956,1.16 (4)中间包注流区离水口的距离最远,在注流 [7]WeiP.UauraK I KoyanaS Cold mol experinent on entmap- 区吹氩使得碰撞长大后的夹杂物有较长的时间上浮 ment of inclusions n steel by insert gas Tetsu-toHagane 1992 78.1361 排出,去除夹杂物效果更为明显 [8]Yoon R H.LuttrellG H.The effect of bubble size on fine particle 参考文献 flotation M iner Pmcess ExtrMetallRev 1989.5.101 [9]EvansG M.Jameson G J Atkinson B W.Prediction of the bubble [1]MarqueC Dony A.Nyssen P.The bubbling of nter gas in the size generated by a phnging liquid jet bubble cohmn Chan Eng tundish a means to ipmove the steel elanliness//Stcemaking Sci199247:3265 Conference Pmceeding Pennsylvania 1990,461 [10]Himyuki Ryoji N.Ryusuke M.Technology for cleaning of [2]BrooksG A.SetiadhamajiW.Bubbling in a tundish/Steemak- molten steel in tundish IJ Int 1994.34(11):868 ing Conference Pmceeding Pennsylvania 1997:655 [11]Kin SH.Fnuehan R J Guthrie R IL Physicalmodel studies of [3]Feng W X.Chen W Q.Zhao JZ Watermodel study on inchision slag /metal meactions n gas stired adks detem nation of eritical mmoval in tundish with aron bubbling Iron Stcel 2009.44 gas flow rate Iron Steemaker 1993 20(11):71 (10):21第 4期 丰文祥等: 中间包吹氩去除钢水夹杂物 影响.在本研究条件下合适的氩气流量为 6L· min -1与不吹氩相比在注流区内吹氩钢中总氧含 量的降低和夹杂物的去除率均可提高 10%左右;然 而 15L·min -1大流量吹氩将会明显增加钢中总氧含 量和夹杂物数量. (3) 中间包吹氩去除夹杂物与 Stokes碰撞和湍 流碰撞有关在注流区内吹氩强大的湍流强度可把 氩气泡击碎成弥散细小气泡大量弥散小气泡在钢 液中上浮不但增加了夹杂物之间的碰撞概率而且 增加了夹杂物与气泡之间的碰撞概率其结果是增 大了夹杂物的粒径促进了夹杂物的上浮去除. (4) 中间包注流区离水口的距离最远在注流 区吹氩使得碰撞长大后的夹杂物有较长的时间上浮 排出去除夹杂物效果更为明显. 参 考 文 献 [1] MariqueCDonyANyssenP.Thebubblingofintergasinthe tundishameanstoimprovethesteelcleanliness∥ Steelmaking ConferenceProceeding.Pennsylvania1990:461 [2] BrooksGASetiadharmajiW.Bubblinginatundish∥Steelmak- ingConferenceProceeding.Pennsylvania1997:655 [3] FengW XChenW QZhaoJZ.Watermodelstudyoninclusion removalintundishwithargonbubbling.IronSteel200944 (10):21 (丰文祥陈伟庆赵继增.中间包吹氩去除夹杂物的模拟研 究.钢铁200944(10):21) [4] FengW XZhaoJZChenW Qetal.OneKindofTundish PurgingDam:ChinaPatentZL200520142243.5.2005--12--01 (丰文祥赵继增陈伟庆等.一种中间包吹气式挡坝:中 国专利ZL200520142243.5.2005--12--01) [5] FengW XChenW QZhaoJZ.PropertiesofAl2O3-basedper- meableporouspurgingplugmadebycasting.Refractories2009 43(3):218 (丰文祥陈伟庆赵继增.浇注成型刚玉质弥散型透气砖的 性能研究.耐火材料200943(3):218) [6] SaffmanPGTurnerJS.Onthecollisionofdropsinturbulent clouds.JFluidMech19561:16 [7] WeiPUemuraKIKoyamaS.Coldmoldexperimentonentrap- mentofinclusionsinsteelbyinsertgas.Tetsu-to-Hagané1992 78:1361 [8] YoonRHLuttrellGH.Theeffectofbubblesizeonfineparticle flotation.MinerProcessExtrMetallRev19895:101 [9] EvansGMJamesonGJAtkinsonBW.Predictionofthebubble sizegeneratedbyaplungingliquidjetbubblecolumn.ChemEng Sci199247:3265 [10] HiroyukiTRyojiNRyusukeM.Technologyforcleaningof moltensteelintundish.ISIJInt199434(11):868 [11] KimSHFruehanRJGuthrieRIL.Physicalmodelstudiesof slag/metalreactionsingasstirredladles:determinationofcritical gasflowrate.IronSteelmaker199320(11):71 ·431·