Advertisement

Experimental study on smelting reduction of carbon-bearing manganese briquettes in slag bath

  • Bo Zhang
  • Da-ping Wang
  • Bin Chen
  • Zhen-jian Su
  • Zheng-liang Xue
Original Paper
  • 32 Downloads

Abstract

The reduction of carbon-bearing manganese briquettes in a slag bath was experimentally investigated at temperatures ranging from 1550 to 1650 °C. Both the internal temperature and the microstructure evolution of the briquettes were analyzed by differential thermal analysis, scanning electron microscopy and energy-dispersive spectrum analysis, and the smelting reduction mechanism of the carbon-bearing manganese briquettes in the slag bath was further elaborated. The results indicated that the smelting reduction of the briquettes in the slag bath could be divided into three stages, and the aggregation and growth of the metallic particles during the reduction were significantly affected by the slag temperature. Under the experimental conditions, the reduction speed at the initial stage of the carbon-bearing manganese briquettes smelting reduction was controlled by the chemical reaction, whereas the reaction speeds at both the middle and following stages were limited by gaseous diffusion.

Keywords

Slag bath Smelting reduction Carbon-bearing briquette Kinetics 

Notes

Acknowledgements

The authors gratefully acknowledge the financial support for this work from the Specialized Research Fund for the National Natural Science Foundation of China (No. 51504090), the Open Fund of the State Key Laboratory of Refractories and Metallurgy in the Wuhan University of Science and Technology (No. G201603) and the Doctoral Program of Higher Education (No. 20134219110004).

References

  1. [1]
    T. Kaneko, T. Matsuzaki, T. Kugimiya, K. Ide, M. Kumakura, A. Kasama, Tetsu-to-Hagane 79 (1993) 941–947.CrossRefGoogle Scholar
  2. [2]
    H. Suito, R. Inoue, ISIJ Int. 35 (1995) 266−271.CrossRefGoogle Scholar
  3. [3]
    C.F. Zhang, J.B. Chang, S.W. Li, Z.J. Han, D.G. Ma, S.X. Liu, Y.B. Xiang, Steelmaking 29 (2013) No. 6, 12−15.Google Scholar
  4. [4]
    Y.M. Gao, J.Q. Zhao, T. Xing, J. Wuhan Univ. Sci. Technol. 34 (2011) 1−4.Google Scholar
  5. [5]
    R.S. Li, R.M. Feng, G.Z. Wei, J.M. Li, Steelmaking 20 (2004) No. 1, 13−15.Google Scholar
  6. [6]
    Z.L. Xue, Y. Yu, W. Wang, The process of direct alloying steelmaking with manganese oxide composite mass used in a compound blowing converter, China, ZL201010245102.1, 2010.Google Scholar
  7. [7]
    B. Zhang, Z.L. Xue, T.T. Zhu, J. Dong, J. Iron Steel Res Int. 22 (2015) 402−407.CrossRefGoogle Scholar
  8. [8]
    J. Chen, L. Li, G. Chen, J. Peng, C. Srinivasakannan, J. Alloy. Compd. 699 (2017) 430−435.CrossRefGoogle Scholar
  9. [9]
    J. Chen, P.F. Tian, X.A. Song, N. Li, J.X. Zhou, J. Iron Steel Res. Int. 17 (2010) No. 3, 13−20.CrossRefGoogle Scholar
  10. [10]
    M.S. Chu, Z.C. Wang, Z.G. Liu, J.P. Lu, Chin. J. Process Eng. 10 (2010) 121−126.Google Scholar
  11. [11]
    Y.F. Shen, Q.G. Xue, G. Wang, X.F. She, J.S. Wang, Chin. J. Process Eng. 15 (2015) 252−258.Google Scholar
  12. [12]
    C.F. Lyu, D.L. Shang, Q. Sun, L. Kang, Z.Y. Qi, Steelmaking 31 (2015) No. 1, 40−43.Google Scholar
  13. [13]
    Y.B. He, G. Wei, Q.J. Gao, Z.S. Zou, J. Northeast. Univ. 35 (2014) 804−808.Google Scholar
  14. [14]
    S.K. Dey, B. Jana, A. Basumallick, ISIJ Int. 33 (1993) 735−739.CrossRefGoogle Scholar
  15. [15]
    S.F. Dai, W. Wu, D. Ma, X.D. Zhang, P. Wang, Iron and Steel 52 (2017) No. 8, 35−42.Google Scholar
  16. [16]
    M.S. Chu, Study on super high efficiency operations of blast furnace based on multi-fluid model, Tohoku University, Sendai, Japan, 2004.Google Scholar
  17. [17]
    Y.W. Tian, X.J. Zai, K.R. Liu, Physical chemistry in metallurgy, Chemical Industry Press, Beijing, 2007.Google Scholar
  18. [18]
    R.F. Wei, J.X. Li, J.M. Li, H.M. Long, P. Wang, G. Gao, G.P. Lin, Chin. J. Process Eng. 11 (2011) 429−435.Google Scholar

Copyright information

© China Iron and Steel Research Institute Group 2018

Authors and Affiliations

  • Bo Zhang
    • 1
    • 2
  • Da-ping Wang
    • 1
  • Bin Chen
    • 1
  • Zhen-jian Su
    • 1
  • Zheng-liang Xue
    • 2
  1. 1.School of Metallurgical and Material EngineeringHunan University of TechnologyZhuzhouChina
  2. 2.The State Key Laboratory of Refractories and MetallurgyWuhan University of Science and TechnologyWuhanChina

Personalised recommendations