The activity of FetO is very important in ironmaking and steelmaking process. In order to predict the activ- ity of Fe, O and optimize the operation conditions in ironmaking and steelmaking process, by application of regular so lution model in molten slag systems, FeO-Fe2 O3-SIO2 ternary system, FeO-Fe2 O3-SiO2-CaO and FeO-Fe2 O3-SiO2-NiO quaternary systems have been studied by the chemical equilibrium between H2/H20 gas mixture and liquid slag con tained in solid iron. The values of interaction energy between cations concerning steelmaking slags have been deter- mined by application of ferric-ferrous iron equilibrium and iron-ferric iron equilibrium. And then the activity of Fe, O can be calculated. The results show that the relative error is 3.9% in FeO-Fe203-SiO2 system and 18% in FeO- Fe203-SiO2 CaO system. The prediction of activities of FetO in the systems are in good agreement with the measure- ments and the regular solution model is valid for predicting the activity of FetO in complex molten slags systems. The activity of Fe, O in FeO-Fe20a-NiO system have not been tested presently, and the calculated result can not be assessed.
参考文献
| [1] | Hildebrand J H;Scott R L.Regular Solution[M].New Jersey:Englewwood Cliffs,1962 |
| [2] | Lumsden J.Physical Chemistry of Process Metallurgy Part I[M].New Jersey:Englewwood Cliffs,1961 |
| [3] | Banya S .Mathematical Expression of Slag-Metal Reactions in Steelmaking Process by Quadratic Formalism Based on the Reg- ular Solution Model[J].ISIJ International,1993,33(02):2. |
| [4] | Banya S;Watanabe T .Thermodynamics of Fe1O-P2O5 Slags Saturated With Solid Iron[J].Tetsu To Hagane-Journal of the Iron & Steel Institute of Japan,1977,63(12):1809. |
| [5] | Banya S;Chiba A;Hikosaka A .Thermodynamic of FetO- MxOy(MxOy:CaO,SiO2,TiO2 and Al2O3)[J].Tetsu To Hagane-Journal of the Iron and Steel Institute of Japan,1980,66(10):1484. |
| [6] | Banya S;Nagabayashi R .Thermodynamics of FeiO-P2O5-CaO and FetO-P2O5-MgO Ternary Slags Saturated With Solid Iron[J].Tetsu-to-Hagan&,1982,68(02):261. |
| [7] | Banya S;Hino M;Yuge N .Activity of the Constituents in FetO-SiO2-MnO Slags in Equilibrium With Solid Iron[J].Tet- su-to-Hagane,1985,71(07):853. |
| [8] | Banya S;Hino M;Takezoe H .Thermodynamic Properties of FetO-Na2O, FetO-SiO2-Na2O, FetO-P2O5-Na2O and FetO- P2O5-SiO2 Na2O Slags[J].ISIJ International,25:1122. |
| [9] | Nagabayshi R;Hino M;Banya S .Distribution of Sulphur Be tween Liquid Iron and FetO-(CaO--MgO)-(SiO2--P2O5 ) Phosphate Slags[J].Tetsu To Hagane-Journal of the Iron & Steel Institute of Japan,1990,76(02):183. |
| [10] | Banya S;Shim J D .Application of the Regular Solution Model for the Equilibrium of Distribution of Oxygen Between Iron and Steelmaking Slags[J].Can Metall Quarterly,1982,21(04):319. |
| [11] | Nagabayashi R;Hino M;Banya S .Distribution of Oxygen Between Liquid Iron and Fet O- (CaO + MgO) - (SiO2+P2O5 ) Phosphate Slags[J].Tetsu To Hagane-Journal of the Iron & Steel Institute of Japan,1988,74(08):1585. |
| [12] | Nagabashi R;Hino M;Banya S .Distribution of Phosphorus Between Liquid Iron and Fet O- ( CaO-4- MgO) - (SiO2+P2 O5 ) Phosphate Slags[J].Tetsu To Hagane-Journal of the Iron & Steel Institute of Japan,1988,74(09):1770. |
| [13] | Nagabashi R;Hino M;Banya S .Mathematical Expression of Phosphorus Distribution in Steelmaking Process by Quadratic Formalism[J].ISIJ International,1989,29(02):140. |
| [14] | Banya S .Mathematical Expression of Slag-Metal Reactions in Steelmaking Process by Quadratic Formalism Based on the Regular Solution Model[J].ISIJ International,1993,33(01):2. |
| [15] | Shim J D;Banya S .The Solubility of Magnesia and FerricFerrous Equilibrium in Liquid FetO-SiO2 CaO MgO Slags[J].Tetsu To Hagane-Journal of the Iron & Steel Institute of Japan,1981,67(10):1735. |
| [16] | Banya S;Hino M Hino;Takezoe H .Activities of the Constituents and Fe^3+/Fe^2+ Equilibrium in FetO-Na2O and FetO SiO2 Na2O Slags[J].Tetsu To Hagane-Journal of the Iron & Steel Institute of Japan,1985,71(15):1765. |
| [17] | Banya S;Hino M;Takezoe H .Activity of FetO and Fe3+/ Fe2+ Equilibrium in FetO-P2O5 Na2O and FetO-P2O5-SiO2- Na2O Slags in Equilibrium With Solid Iron[J].Tetsu To Hagane-Journal of the Iron & Steel Institute of Japan,1985,71(16):1903. |
| [18] | Nagabashi R;Hino M;Banya S .Solubilities of CaO,MgO,SiO2 and 2CaO @ SiO2,and Ferric-Ferrous Equilibrium in FeO-(CaO+MgO)-(SiO2 +P2O5) Phosphate Slags[J].Tet su-to-Hagane,1988,74(08):1577. |
| [19] | Banya S;Hino M;Nagasaka T .Estimation of Water Vapor Solubility in Molten Silicates by Quadratic Formalism Based on the Regular Solution Model[J].ISIJ International,1993,33(01):12. |
| [20] | Bodsworth C.Activity of FetO in Molten Slags in Equilibrium With Solid Iron[J].ISIJ International,1959(175):13. |
| [21] | Zhang N H;Tao D P .KF Model in Gaye Parameter Approxi- mate Applied in Slag Systems[D].Kunming:Kunming Uni versity of Science and Technology,2010. |
| [22] | Banya S;Hino M .Tetsu-to-Hagane, Activity Measurement of the Constituents in FetO-SiO2-CaO Slag Equilibrated With Iron[J].,1987,73(16):74. |
| [23] | Hou M .Application of Modified Quasi-Chemical Model in Metallurgical Molten Slag[D].Kunming University of Sci- ence and Technology,2010. |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%