Abstract:In order to lower cost and enlarge ore resource,the high aluminum final slag was systematically studied in this paper.Through viscosity test,kinetics activation energy calculation,thermal dynamics calculation,crystallization and changing rules of constituents of different slag were analyzed.The stability of slag has complicated relation with constituents,though the composition of ultra-large furnace is close with each other,the changing rules of viscosity are quite different.Normally,in high temperature the activation energy of different slag differs a little,between 160 000~170 000 J,and in low temperature the difference is significant.The stability of high aluminum low magnesium slag is higher than high aluminum and high magnesium slag,and if lowering the magnesium content the metallurgical properties of blast furnace burdens could be improved and slag ratio could be also lowered,which is effective measure to lower cost.Lowering the magnesium content in final slag is to increase the efficiency of magnesium.High aluminum slag doesn’t mean low stability,and by adjusting other constituents the blast furnace operation can adapt to high aluminum slag.
收稿日期: 2013-06-26
出版日期: 2014-04-28
引用本文:
孙忠贵. 氧化镁对高铝渣稳定性影响[J]. 钢铁, 2014, 49(4): 18-24.
SUN Zhong-gui. Effect of MgO on High Aluminous Slag Stability. Iron and Steel, 2014, 49(4): 18-24.
K.Sunahara, K. Nakano, M. Hoshi, T. Inada, S. Komatsu and T. Yamamoto. Effect of High Al2O3 Slag on the Blast Furnace Operations.ISIJ International, 2008,48(4):420.
[6]
K.Sunahara, K. Nakano, M. Hoshi, T. Inada, S. Komatsu and T. Yamamoto. Effect of High Al2O3 Slag on the Blast Furnace Operations.ISIJ International, 2008,48(4):420.
[7]
K. Yajima, H. Matsuura and F. Tsukihashi. Effect of Simultaneous Addition of Al2O3 and MgO on the Liquidus of the CaO–SiO2–FeOx System with Various Oxygen Partial Pressures at 1573 K. ISIJ International,2010,50(2):191.
[7]
K. Yajima, H. Matsuura and F. Tsukihashi. Effect of Simultaneous Addition of Al2O3 and MgO on the Liquidus of the CaO–SiO2–FeOx System with Various Oxygen Partial Pressures at 1573 K. ISIJ International,2010,50(2):191.
[8]
F.M. Shen, X. Jiang, G.S. Wu, G. Wei, X.G. Li and Y.S. Shen. Proper MgO Addition in Blast Furnace Operation. ISIJ International,2006,46(1):65.
[8]
F.M. Shen, X. Jiang, G.S. Wu, G. Wei, X.G. Li and Y.S. Shen. Proper MgO Addition in Blast Furnace Operation. ISIJ International,2006,46(1):65.
J. H. Park, D. J. Min and H. S. Song. Amphoteric behavior of alumina in viscous flow and structure of CaO-SiO2 (-MgO)-Al2O3 slags. Metall. Mater. Trans. B, 2004,35(2):269.
[13]
J. H. Park, D. J. Min and H. S. Song. Amphoteric behavior of alumina in viscous flow and structure of CaO-SiO2 (-MgO)-Al2O3 slags. Metall. Mater. Trans. B, 2004,35(2):269.
[14]
K. Shimoda and K. Saito. Detailed Structure Elucidation of the Blast Furnace Slag by Molecular Dynamics Simulation. ISIJ International, 2007,47(9):1275.
[14]
K. Shimoda and K. Saito. Detailed Structure Elucidation of the Blast Furnace Slag by Molecular Dynamics Simulation. ISIJ International, 2007,47(9):1275.
[15]
J. H. Peak, I. H. Jung and H. G. Lee. Dissolution Behavior of Al2O3 and MgO Inclusions in the CaO–Al2O3–SiO2 Slags,p. Formation of Ring-like Structure of MgAl2O4 and Ca2SiO4 around MgO Inclusions. ISIJ International, 2006,46(11):1626.
[15]
J. H. Peak, I. H. Jung and H. G. Lee. Dissolution Behavior of Al2O3 and MgO Inclusions in the CaO–Al2O3–SiO2 Slags,p. Formation of Ring-like Structure of MgAl2O4 and Ca2SiO4 around MgO Inclusions. ISIJ International, 2006,46(11):1626.
[16]
J.F. Xu, J.Y. Zhang, C. Jie, F.Ruan and K.C. Chou. Experimental measurements and modelling of viscosity in CaO‐Al2O3‐MgO slag system. Ironmaking and Steelmaking, 2011, 38(5):329.
[16]
J.F. Xu, J.Y. Zhang, C. Jie, F.Ruan and K.C. Chou. Experimental measurements and modelling of viscosity in CaO‐Al2O3‐MgO slag system. Ironmaking and Steelmaking, 2011, 38(5):329.