Effect of Oxygen Concentration on Hot Metal Desulfurization with Magnesium Vapor

被引：0
|
作者：
Su J.-M. [1 ]
Dou Z.-H. [1 ]
Zhang T.-A. [1 ]
Liu Y. [1 ]
机构：
[1] Key Laboratory of Ecological Metallurgy of Multi-metal Intergrown Ores of Ministry of Education, Northeastern University, Shenyang
来源：
Zhang, Ting-An (zta2000@163.net) | 1600年 / Northeast University卷 / 41期
关键词：
Aluminum-oxygen balance; Hot metal desulfurization; Magnesium vapor; Sulfur-oxygen balance;
D O I：
10.12068/j.issn.1005-3026.2020.06.011
中图分类号：
学科分类号：
摘要：
In view of the low utilization rate of magnesium generally obtained under traditional desulfurization processing, the method of bottom-blown magnesium vapor was used for hot metal desulfurization in order to optimize the dynamic conditions and to improve the utilization rate of magnesium in hot metal desulfurization. Thermodynamic calculation of the equilibrium concentration of sulfur under different oxygen concentrations was carried out, and the effect of oxygen concentration on the kinetics of hot metal desulfurization process was studied by experiments. The results show that the reduction of oxygen concentration in molten iron is helpful for promoting the desulfurization with magnesium vapor. When oxygen concentration arrives 62×10-6, the utilization rate of magnesium can reach 78%, leading to a desulfurization rate of 82% and a mass transfer coefficient of desulfurization of 0.012 2 m/s. © 2020, Editorial Department of Journal of Northeastern University. All right reserved.
引用
收藏
页码：824 / 827
页数：3
相关论文
共 11 条
  • [1] Sun H P, Liu Y C, Lu M J., Thermodynamic and kinetic analysis of nitrogenizationin desulfurization of hot metal by magnesium injection[J], ISIJ International, 49, 6, pp. 771-776, (2009)
  • [2] Lindstrom D, Du S C., Kinetic study on desulfurization of hot metal using CaO and CaC<sub>2</sub>[J], Metallurgical and Materials Transations B, 46, 2, pp. 83-92, (2015)
  • [3] Guo Han-jie, Dynamical behaviors in hot metal desulfurization by magnesium, Iron and Steel, 42, 5, pp. 37-41, (2007)
  • [4] Guo Han-jie, Liu Zheng-bo, Desulfurization rate and particle magnesium utilization rate in hot metal pretreatment, Journal of University of Science and Technology Beijing, 29, 1, pp. 128-133, (2007)
  • [5] Irons G A, Guthrie R I L., The kinetics of molten iron desulfurization using magnesium vapor[J], Metallurgical and Materials Transations B, 12, 12, pp. 755-768, (1981)
  • [6] Yang J, Ozaki S, Kakimoto R, Et al., Desulfurization of molten iron with magnesium vapor produced in-situ by carbothermic reduction of magnesium oxide[J], ISIJ International, 41, 9, pp. 945-954, (2001)
  • [7] Yang J, Okumura K J, Kuwabara M, Et al., Desulfurization of molten iron with magnesium vapor produced in-situ by aluminothermic reduction of magnesium oxide[J], ISIJ International, 41, 9, pp. 965-973, (2001)
  • [8] Mukawa S, Ueshima Y, Sano M, Et al., The effect of magnesium gas injecting conditions on the rate of hot metal desulfurization[J], ISIJ International, 46, 12, pp. 1778-1782, (2006)
  • [9] Yang J, Okumura K, Kuwabara M, Et al., Effects of operating parameters on desulfurization of molten iron with magnesium vapor produced in-situ by aluminothermic reduction of magnesium oxide[J], ISIJ International, 42, 6, pp. 595-602, (2002)
  • [10] Ohta H, Suito H., Thermodynamics of aluminum and manganese deoxidation equilibria in Fe-Ni and Fe-Cr alloys, ISIJ International, 43, pp. 1301-1308, (2003)
12