转炉生产低磷钢的脱磷反应热力学

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摘要为实现磷质量分数小于0.010%的低磷钢批量生产，系统研究了转炉脱磷反应热力学。分析了影响转炉渣-金间磷分配比LP的主要因素，研究了P2O5活度系数和脱磷反应氧分压的定量确定方式，以及碳、磷选择性氧化问题。研究结果表明：LP主要受氧分压、P2O5活度系数和温度的影响；P2O5活度系数采用修正的柯热乌罗夫规则离子溶液模型计算较为准确；脱磷反应氧分压受炉渣氧分压控制，炉渣氧分压主要取决于钢中碳含量、炉渣碱度和温度。对传统复吹转炉生产磷质量分数小于0.010%低磷钢的工艺条件是：终渣碱度w(CaO)/w(SiO2)≥3.0，终渣w(MgO)≤9.0%，终点碳w(［C］)≤0.065%，终点温度控制在1873～1923K范围。

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关键词 ：转炉, 低磷钢, 脱磷反应热力学, 规则溶液模型

Abstract：In order to produce low phosphorus steel with w(［P］)≤0.010%, thermodynamics of dephosphorization reation in converter was investigated systematically.The main factors of influencing phosphorus distribution ratio LP between slag and metal in converter were analyzed, the quantitative method of determining activity coefficient of P2O5 and oxygen partial pressure of dephosphorization reaction was studied, and selective oxidation problem of carbon and phosphorus element in molten steel was also discussed. The results show that: LP is mainly affected by oxygen partial pressure, activity coefficient of P2O5 and reaction temperature; activity coefficient of P2O5 may be more accurately calculated by the modified Кожуров regular solution model. Dephosphorization reaction is controlled by oxygen partial pressure of the slag, which depends on carbon content in molten steel, slag basicity and temperature. For traditional combined blown converter, the process conditions of producing low phosphorus steel with w(［P］)≤0010% are as follows: final slag basicity w(CaO)/w(SiO2)≥3.0, the final slag w(MgO)≤9.0%, the end-point carbon content w(［C］)≤0.065%, end-point temperature at 1873-1923K range.

收稿日期: 2011-04-08 出版日期: 2012-01-16

PACS:

TF704.4

引用本文:

刘锟,刘浏,何平,崔阳,朱国森,李海波. 转炉生产低磷钢的脱磷反应热力学[J]. 钢铁, 2012, 47(1): 34-39. LIU Kun1,LIU Liu2,HE Ping2,CUI Yang1,ZHU Guo-sen1,LI Hai-bo1. Thermodynamics of Dephosphorization Reaction for Producing Low Phosphorus Steel in Converter. Iron and Steel, 2012, 47(1): 34-39.

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http://www.chinamet.cn/Jweb_gt/CN/ 或 http://www.chinamet.cn/Jweb_gt/CN/Y2012/V47/I1/34

[1]	R.Selin.Studies on the MgO solubility in complex steelmaking slags in equilibrium with liquid iron and distribution of phosphorus and vanadium between slag and metal at MgO saturation. Part II. the total system including Al2O3, SiO2, and TiO2[J].Scand. J. Metallurgy,1991,20:318-328
[1]	R.Selin.Studies on the MgO solubility in complex steelmaking slags in equilibrium with liquid iron and distribution of phosphorus and vanadium between slag and metal at MgO saturation. Part II. the total system including Al2O3, SiO2, and TiO2[J].Scand. J. Metallurgy,1991,20:318-328
[2]	K.Grjotheim.Thermodynamic Calculation of Slag Equilibria-II Influence of Cation Exchange Equilibria Caused by Cations not Taking Part in the Exchange[J].Journal of the Iron and Steel Institute,1954,(12):354-356
[2]	K.Grjotheim.Thermodynamic Calculation of Slag Equilibria-II Influence of Cation Exchange Equilibria Caused by Cations not Taking Part in the Exchange[J].Journal of the Iron and Steel Institute,1954,(12):354-356
[3]	J.A.Duffy, MD.Ingram, I.D.Sommerville. .Optical basicity of fluoride containing slags[J].Ironmaking and Steelmaking,1990,17(6):410-413
[3]	J.A.Duffy, MD.Ingram, I.D.Sommerville. .Optical basicity of fluoride containing slags[J].Ironmaking and Steelmaking,1990,17(6):410-413
[4]	I.H. Jung, JD. Seo and S. H. Kim. .Thermodynamic behaviours of manganese and phosphorus between CaO-MgOsat-SiO2-Al2O3-FetO-MnO-P2O5 ladle slag and liquid iron[J].Steel Research,2000,71(9):333-339
[4]	I.H. Jung, JD. Seo and S. H. Kim. .Thermodynamic behaviours of manganese and phosphorus between CaO-MgOsat-SiO2-Al2O3-FetO-MnO-P2O5 ladle slag and liquid iron[J].Steel Research,2000,71(9):333-339
[5]	D.Dukelow.Hot metal dephosphorization and improved BOF operation at Pohang works[J].Iron &Steelmaker,1994,162(10):83-87
[5]	D.Dukelow.Hot metal dephosphorization and improved BOF operation at Pohang works[J].Iron &Steelmaker,1994,162(10):83-87
[6]	D.L.Slatter.Effect of lime reactivity variations upon rate of slag formation in basic oxygen steelmaking[J].Ironmaking and Steelmaking,1975,(2):145-147
[6]	D.L.Slatter.Effect of lime reactivity variations upon rate of slag formation in basic oxygen steelmaking[J].Ironmaking and Steelmaking,1975,(2):145-147
[7]	D.R.Gaskell .On the Correlation between the Distribution of Phosphorus between Slag and Metal and the Theoretical Optical Basicity of the Slag[J].Transactions ISIJ,1982,22:997-1000
[7]	D.R.Gaskell .On the Correlation between the Distribution of Phosphorus between Slag and Metal and the Theoretical Optical Basicity of the Slag[J].Transactions ISIJ,1982,22:997-1000
[8]	E.T.Turkdogan .Slag composition variations in steel dephosphorization and desulphurization in oxygen steelmaking[J].ISIJ Int,2000,40(9):827-832
[8]	E.T.Turkdogan .Slag composition variations in steel dephosphorization and desulphurization in oxygen steelmaking[J].ISIJ Int,2000,40(9):827-832
[9]	I. D. Sommerville.nullY. D. Yang. Optical basicity for control of slags and fluxes[J]., Steel Technology International,1994,:-
[9]	I. D. Sommerville.nullY. D. Yang. Optical basicity for control of slags and fluxes[J]., Steel Technology International,1994,:-
[10]	J.H. Young, TP. Floridis. .Dephosphorizing Capacity of Slags[J].Transactions of the Metallurgical Society of AIME,1967,239(11):1863-1864
[10]	J.H. Young, TP. Floridis. .Dephosphorizing Capacity of Slags[J].Transactions of the Metallurgical Society of AIME,1967,239(11):1863-1864
[11]	J.A.Duffy, MD.Ingram, I.D.Sommerville. .Acid-based properties of molten oxides and metallurgical slags[J].Journal of the Chemistry Society Faraday Trans,1978,74(6):1410-1419
[11]	J.A.Duffy, MD.Ingram, I.D.Sommerville. .Acid-based properties of molten oxides and metallurgical slags[J].Journal of the Chemistry Society Faraday Trans,1978,74(6):1410-1419
[12]	J.F.Elliott .A criticism of the flood ionic treatment of slag equilibria[J].Metallurgical and Materials Transactions B,1975,6B(5):495-501
[12]	J.F.Elliott .A criticism of the flood ionic treatment of slag equilibria[J].Metallurgical and Materials Transactions B,1975,6B(5):495-501
[13]	K.Kunisada, HIwai. .Effect of Na2O on phosphorus distribution between liquid iron and CaO-based slag[J].Trans. ISIJ,1987,27(3):263-269
[13]	K.Kunisada, HIwai. .Effect of Na2O on phosphorus distribution between liquid iron and CaO-based slag[J].Trans. ISIJ,1987,27(3):263-269
[14]	N.Sano .Thermodynamics of MgO or CaO saturated slags for steel dephosphorisation[J].Scand. J. Metallurgy,1992,22:139-144
[14]	N.Sano .Thermodynamics of MgO or CaO saturated slags for steel dephosphorisation[J].Scand. J. Metallurgy,1992,22:139-144
[15]	R.Scimar .Physicochemical Equilibrium of Phosphorus in Steelmaking[J].Steel & Coal,1962,(3):505-509
[15]	R.Scimar .Physicochemical Equilibrium of Phosphorus in Steelmaking[J].Steel & Coal,1962,(3):505-509
[16]	R.W.Young, JA. Duffy, G.J.Hassall, etal. .Use of optical basicity concept for determining phosphorus and sulphur slag-metal partitions[J].Ironmaking and Steelmaking,1992,19(3):201-219
[16]	R.W.Young, JA. Duffy, G.J.Hassall, etal. .Use of optical basicity concept for determining phosphorus and sulphur slag-metal partitions[J].Ironmaking and Steelmaking,1992,19(3):201-219
[17]	T.Mukherjee, AChatterjee. .Production of low phosphorus steels from high phosphorus indian hot metal:experience at TaTa steel[J].Bulletin of Materials Science,1996,19(6):893-903
[17]	T.Mukherjee, AChatterjee. .Production of low phosphorus steels from high phosphorus indian hot metal:experience at TaTa steel[J].Bulletin of Materials Science,1996,19(6):893-903
[18]	Y.Kobayashi, NYoshida and K. Nagai. .Thermodynamics of Phosphorus in the MnO-SiO2-FetO System[J].ISIJ International,2004,44(1):21-26
[18]	Y.Kobayashi, NYoshida and K. Nagai. .Thermodynamics of Phosphorus in the MnO-SiO2-FetO System[J].ISIJ International,2004,44(1):21-26
[19]	D.C.Guo .A New Model predicting phosphorus equilibrium and its application[J].Arch. Eisenhuttenwes,1984,55(5):183-188
[19]	D.C.Guo .A New Model predicting phosphorus equilibrium and its application[J].Arch. Eisenhuttenwes,1984,55(5):183-188
[20]	A.Bergman, A.Gustafsson. .On the relation between optical basicity and phosphorus capacity of complex slags[J].Steel Research,1988,59(7):281-288
[20]	A.Bergman, A.Gustafsson. .On the relation between optical basicity and phosphorus capacity of complex slags[J].Steel Research,1988,59(7):281-288
[21]	A.T. Morales, R.J. Fruehan. .Thermodynamics of MnO, FeO, and Phosphorus in Steelmaking Slags with High MnO Contents[J].Metallurgical and Materials Transactions B,1997,28B:1111-1118
[21]	A.T. Morales, R.J. Fruehan. .Thermodynamics of MnO, FeO, and Phosphorus in Steelmaking Slags with High MnO Contents[J].Metallurgical and Materials Transactions B,1997,28B:1111-1118
[22]	B.Deo, J.Halder, B. Snoeijer, etal.. Effect of MgO and Al2O3 variations in oxygen steelmaking (BOF) slag on slag morphology and phosphorus distribution[J].Ironmaking and Steelmaking,2005,32(1):54-60
[22]	B.Deo, J.Halder, B. Snoeijer, etal.. Effect of MgO and Al2O3 variations in oxygen steelmaking (BOF) slag on slag morphology and phosphorus distribution[J].Ironmaking and Steelmaking,2005,32(1):54-60
[23]	C.R. Taylor, J.Chipman. .Equilibria of Liquid Iron and Simple Basic and Acid Slags in a Rotating Induction Furnace[J].Journal of the Iron and Steel Institute,1942,10:228-247
[23]	C.R. Taylor, J.Chipman. .Equilibria of Liquid Iron and Simple Basic and Acid Slags in a Rotating Induction Furnace[J].Journal of the Iron and Steel Institute,1942,10:228-247
[24]	C.M.Lee, R.J.Fruehan. .Phosphorus equilibrium between hot metal and slag[J].Ironmaking and Steelmaking,2005,32(6):503-508
[24]	C.M.Lee, R.J.Fruehan. .Phosphorus equilibrium between hot metal and slag[J].Ironmaking and Steelmaking,2005,32(6):503-508
[25]	E.T. Turkdogan, J.Pearson. .Activities of Constituents of Iron and Steelmaking Slags[J].Journal of the Iron and Steel Institute,1953,(3):217-223
[25]	E.T. Turkdogan, J.Pearson. .Activities of Constituents of Iron and Steelmaking Slags[J].Journal of the Iron and Steel Institute,1953,(3):217-223
[26]	E.T.Turkdogan. Assessment of P2O5 Activity Coefficients in Molten Slags[J].ISIJ International,2000,40(10):964-970
[26]	E.T.Turkdogan. Assessment of P2O5 Activity Coefficients in Molten Slags[J].ISIJ International,2000,40(10):964-970
[27]	H.Suito, R.Inoue. .Phosphorus Distribution between MgO-saturated CaO-FetO-SiO2-P2O5-MnO Slags and Liquid Iron[J].Transactions ISIJ,1984,24:40-46
[27]	H.Suito, R.Inoue. .Phosphorus Distribution between MgO-saturated CaO-FetO-SiO2-P2O5-MnO Slags and Liquid Iron[J].Transactions ISIJ,1984,24:40-46
[28]	S.Ban-ya. Mathematical Expression of Slag-Metal Reactions in Steelmaking Process by Quadratic Formalism Based on the Regular Solution Model[J].ISIJ International,1993,33(1):2-11
[28]	S.Ban-ya. Mathematical Expression of Slag-Metal Reactions in Steelmaking Process by Quadratic Formalism Based on the Regular Solution Model[J].ISIJ International,1993,33(1):2-11
[29]	Кожуров, В. А..[J].Свердловск: Металлургизда,1955,:-
[29]	Кожуров, В. А..[J].Свердловск: Металлургизда,1955,:-
[30]	H.Suito, RInoue and M. Takada. .Phosphorus Distribution between Liquid Iron and MgO Saturated Slags of the System CaO-MgO-FeOx-SiO2[J].Transactions ISIJ,1981,21:250-259
[30]	H.Suito, RInoue and M. Takada. .Phosphorus Distribution between Liquid Iron and MgO Saturated Slags of the System CaO-MgO-FeOx-SiO2[J].Transactions ISIJ,1981,21:250-259
[31]	B.Winkler, J.Chipman.. An Equilibrium Study of the Distribution of Phosphorus between Liquid Iron and Basic Slags[J].A.I.M.E,1946,(4):111-133
[31]	B.Winkler, J.Chipman.. An Equilibrium Study of the Distribution of Phosphorus between Liquid Iron and Basic Slags[J].A.I.M.E,1946,(4):111-133
[32]	S.Basu, AK.Lahiri and S. Seetharaman. .Phosphorus Partition between Liquid Steel and CaO-SiO2-FeOx-P2O5-MgO Slag Containing 15 to 25 Pct FeO[J].M. M.T.B,2007,38(4):623-630
[32]	S.Basu, AK.Lahiri and S. Seetharaman. .Phosphorus Partition between Liquid Steel and CaO-SiO2-FeOx-P2O5-MgO Slag Containing 15 to 25 Pct FeO[J].M. M.T.B,2007,38(4):623-630
[33]	S.Basu, A.K.Lahiri and S. Seetharaman.. Phosphorus Partition between Liquid Steel and CaO-SiO2-P2O5-MgO Slag Containing Low FeO[J].M. M.T.B,2007,38(3):357-366
[33]	S.Basu, A.K.Lahiri and S. Seetharaman.. Phosphorus Partition between Liquid Steel and CaO-SiO2-P2O5-MgO Slag Containing Low FeO[J].M. M.T.B,2007,38(3):357-366