·460 工程科学学报，第40卷，第4期 要因素.而吹气量作为影响含气率的主要因素，会 [6]Neves L,de Oliveira H P O,Tavares R P.Evaluation of the 直接影响上升管内气液两相流的状态，当提升气体 effects of gas injection in the vaccum chamber of a RH degasser on 流量控制在3500L·min-1时整体含气率控制较好. melt circulation and decarburization rates.ISI/Int,2009,49 (8): 1141 (3)从真空室停留时间的角度考虑，随着真空 Zhang L F,Li F.Investigation on the fluid flow and mixing phe- 室液面高度的增加，真空室停留时间呈现先增大后 nomena in a Ruhrstahl-Heraeus (RH)steel degasser using physi- 减少的趋势，当模型真空室液面高度在70~90mm cal modeling.JOM,2014,66(7):1227 范围内时，钢液在真空室内停留时间达到最大值. [8]Bello R A,Robinson C W,Moo-Young M.Gas holdup and over- (4)通过优化将提升气体流量设定为3500L· all volumetric oxygen transfer coefficient in airlift contactors.Bio- technol Bioeng,1985,27(3):369 min1,实际真空室液面高度设定为480mm时，脱碳 Siegel M H,Merchuk J C.Mass transfer in a rectangular air lift 效果较好，脱碳时间由原工艺的21.4min缩短至 reactor:effect of geometry and gas recirculation.Biotechnol Bio- 17.5min. eng,1988,32(9):1128 [10]Kitamura S Y,Aoki H,Miyamoto K I,et al.Development of a novel degassing process consisting with single large immersion 参考文献 snorkel and a bottom bubbling ladle.IS//Int,000,40(5):455 [1]Van Ende MA,Kim Y M.Cho M K,et al.A kinetic model for [11]Uemura K,Takahashi M,Koyama S,et al.Production of ultra- the ruhrstahl heraeus degassing process.Metall Mater Trans B. low carbon steel by RH degasser.Kobe Res Dev Jpn,1991,41 2011,42(3):477 (4):24 Pande MM,Guo MX,Dumarey R,et al.Determination of steel [12]Takahashi M,Matsumoto H,Saito T.Mechanism of decarburiza- cleanliness in ultra low carbon steel by pulse discrimination analy- tion in RH degasser.IS/J Int,1995,35(12)1452 sis-optical emission spectroscopy technique.IS//Int,2011,51 [13]Olivieri G,Marzocchella A,van Ommen J R,et al.Local and (11):1778 global hydrodynamics in a two-phase internal loop airlift.Chem B]Geng DQ.Lei H,He J C.Effect of traveling magnetic field on Eng Sci,2007,62(24):7068 flow,mixing,decarburization and inclusion removal during RH re- 14]Sano M,Mori K.Size of bubbles in energetic gas injection into fining process.ISIJ Int,2012,52(6):1036 liquid metal.Trans /S/J,1980,20(10):675 4]Yamagauchi K,Kishimoto Y,Sakuraya T,et al.Effect of refining [15]Zhang D Z,Prosperetti A.Averaged questions for inviscid dis- conditions for ultra low carbon steel on decarburization reaction in perse twophase flow.J Fluid Mech,1994,267:185 RH degasser.ISIJ Int,1992,32 (1)126 016]Li Y H.Study on Fast Decarburization of Ruhrstahl-Hereaeus and [5]Zhang L,Sun Y H,Zhu J F,et al.Numerical simulation of liquid Hydrodynamics in an External Loop Airlift Reactor [Disserta- steel flowing in RH refining process and its application.J Univ Sci tion].Beijing:University of Science and Technology Beijing, Technol Beijing,2009,31(7):821 2015 (张琳，孙彦辉，朱进锋，等.H精炼过程钢液流动数值模拟 (李怡宏.H快速脱碳技术及环流反应器内流体行为研究 和应用.北京科技大学学报，2009,31(7)：821) [学位论文].北京：北京科技大学，2015)工程科学学报，第 40 卷，第 4 期 要因素． 而吹气量作为影响含气率的主要因素，会 直接影响上升管内气液两相流的状态，当提升气体 流量控制在 3500 L·min － 1时整体含气率控制较好． ( 3) 从真空室停留时间的角度考虑，随着真空 室液面高度的增加，真空室停留时间呈现先增大后 减少的趋势，当模型真空室液面高度在 70 ～ 90 mm 范围内时，钢液在真空室内停留时间达到最大值． ( 4) 通过优化将提升气体流量设定为 3500 L· min － 1，实际真空室液面高度设定为 480 mm 时，脱碳 效果较好，脱碳时间由原工艺的 21. 4 min 缩短至 17. 5 min． 参 考 文 献 ［1］ Van Ende M A，Kim Y M，Cho M K，et al． A kinetic model for the ruhrstahl heraeus degassing process． Metall Mater Trans B， 2011，42( 3) : 477 ［2］ Pande M M，Guo M X，Dumarey Ｒ，et al． Determination of steel cleanliness in ultra low carbon steel by pulse discrimination analy￾sis-optical emission spectroscopy technique． ISIJ Int，2011，51 ( 11) : 1778 ［3］ Geng D Q，Lei H，He J C． Effect of traveling magnetic field on flow，mixing，decarburization and inclusion removal during ＲH re￾fining process． ISIJ Int，2012，52( 6) : 1036 ［4］ Yamagauchi K，Kishimoto Y，Sakuraya T，et al． Effect of refining conditions for ultra low carbon steel on decarburization reaction in ＲH degasser． ISIJ Int，1992，32( 1) : 126 ［5］ Zhang L，Sun Y H，Zhu J F，et al． Numerical simulation of liquid steel flowing in ＲH refining process and its application． J Univ Sci Technol Beijing，2009，31( 7) : 821 ( 张琳，孙彦辉，朱进锋，等． ＲH 精炼过程钢液流动数值模拟 和应用． 北京科技大学学报，2009，31( 7) : 821) ［6］ Neves L，de Oliveira H P O，Tavares Ｒ P． Evaluation of the effects of gas injection in the vaccum chamber of a ＲH degasser on melt circulation and decarburization rates． ISIJ Int，2009，49( 8) : 1141 ［7］ Zhang L F，Li F． Investigation on the fluid flow and mixing phe￾nomena in a Ｒuhrstahl-Heraeus ( ＲH) steel degasser using physi￾cal modeling． JOM，2014，66( 7) : 1227 ［8］ Bello Ｒ A，Ｒobinson C W，Moo-Young M． Gas holdup and over￾all volumetric oxygen transfer coefficient in airlift contactors． Bio￾technol Bioeng，1985，27( 3) : 369 ［9］ Siegel M H，Merchuk J C． Mass transfer in a rectangular air lift reactor: effect of geometry and gas recirculation． Biotechnol Bio￾eng，1988，32( 9) : 1128 ［10］ Kitamura S Y，Aoki H，Miyamoto K I，et al． Development of a novel degassing process consisting with single large immersion snorkel and a bottom bubbling ladle． ISIJ Int，2000，40( 5) : 455 ［11］ Uemura K，Takahashi M，Koyama S，et al． Production of ultra￾low carbon steel by ＲH degasser． Kobe Ｒes Dev Jpn，1991，41 ( 4) : 24 ［12］ Takahashi M，Matsumoto H，Saito T． Mechanism of decarburiza￾tion in ＲH degasser． ISIJ Int，1995，35( 12) : 1452 ［13］ Olivieri G，Marzocchella A，van Ommen J Ｒ，et al． Local and global hydrodynamics in a two-phase internal loop airlift． Chem Eng Sci，2007，62( 24) : 7068 ［14］ Sano M，Mori K． Size of bubbles in energetic gas injection into liquid metal． Trans ISIJ，1980，20( 10) : 675 ［15］ Zhang D Z，Prosperetti A． Averaged questions for inviscid dis￾perse two-phase flow． J Fluid Mech，1994，267: 185 ［16］ Li Y H． Study on Fast Decarburization of Ｒuhrstahl--Hereaeus and Hydrodynamics in an External Loop Airlift Ｒeactor ［Disserta￾tion］． Beijing: University of Science and Technology Beijing， 2015 ( 李怡宏． ＲH 快速脱碳技术及环流反应器内流体行为研究 ［学位论文］． 北京: 北京科技大学，2015) · 064 ·