Improving Reducibility of Iron Ore Pellets by Optimization of Physical Parameters

  • JAGANNATH PAL CSIR-National Metallurgical Laboratory, Jamshedpur-831007, India
  • S Ghorai CSIR-National Metallurgical Laboratory
  • A Ammasi CSIR-National Metallurgical Laboratory
  • S K Hota Tata Steel Ltd
  • V M Koranne Tata Steel
  • T Venugopalan Tata Steel Ltd

Abstract


Reducibility of iron bearing material is an important property which represents its suitability of reduction in iron making furnaces. It has direct influence on improving productivity and lowering energy consumption in iron making process.  The reducibility of iron ore pellets of a specific chemistry can be improved by the optimization of physical parameters such as induration temperature, improving size distribution of fines, improving apparent porosity etc. In this study, the reference pellet is prepared in a typical plant condition and the properties of the reference pellet are considered as base value to improve reducibility index (RI) maintaining other properties at the acceptable limit without altering pellet chemistry. Optimization of induration temperature at the 1250-1275 ºC shows around 74 % RI, which is 5 points more than the base value of 69.5%. Furthermore, on optimizing additives size, such as limestone fines and anthracite coal fines at -350 mesh and induration temperature of 1250-1275 ºC, RI is improved to 77%, i.e., 8 points improvement is achieved with respect to the base value.

Author Biographies

JAGANNATH PAL, CSIR-National Metallurgical Laboratory, Jamshedpur-831007, India
Principal Scientist, Metal extraction and forming division
S Ghorai, CSIR-National Metallurgical Laboratory
Sr Scientist
A Ammasi, CSIR-National Metallurgical Laboratory
Scientist

References

K. Higuchi, R.H. Heerema. Minerals Engineering, 16 (2003) 463–477.

S. Mondal, M.T. Raju, D.K.S. Bhadoria, N. Prasad. Steel India, 23(1) (2000) 11-17.

N. Shigematsu, H. Iwai. Trans. ISIJ, 28, (1988) 206-213.

B.G. Baldwin. Journal of Iron and Steel Institute, 177 (1954) 312.

Y. M. Z. Ahmed, M. H. Khedr, O. A. Mohamed, M. E. H. Shalabi. Fizykochemiczne Problemy Mineralurgii, 31 (1997) 31-41.

S. Dwarapudi, T. K. Ghose, A. Shankar,V. Tathavadkar, D. Bhattacharjee, R. Venugpal. Int. Journal of Mineral Proc., 96(1) (2010) 45-53.

X. U. Bin, T. Hou, X. Chen, Q. Li, T. Jiang, P. Li. J. Cent. South Univ., 20 (2013) 2806−2810.

Md. Meraj, S. Pramanik, J. Pal. Transaction IIM, published online, DOI: http://link.springer.com/article/10.1007/s12666-015-0676-8

J. Pal, S. Ghorai, B. Nandi, T. Chakraborty, G. Das, T. Venugopalan. J. Cent. South Univ., 22(9) (2015) 3302-3310.

S. E. Khalafalla, G. W. Reimers, M. J. Baird. Metallurgical Transactions, 5 (1974) 1013-1018.

A. Wahab A. Al-Ajeel, S. N. Abdullah. Iraqi Bulletin of Geology and Mining, 5(1) (2009) 119-131.

M. L. Nasr, A. A. Omarm, H Khedr, A. A. El-Geass. ISIJ International, 35(9) (1995) 1043-1049.

M. E. E. Botelho, P. F. Nogueira, S. M. Potter. Process for the improvement of reducibility of ore pellets, US Patent No 2014/0096650 A1, 2014.

A. Sarangi, B. Sarangi. Sponge Iron Production in Rotary Kiln, PHI Learning Pvt. Ltd, New Delhi, 2011, p. 156.

J. T. Fitton, D. C. Goldring. Journal of the Iron and Steel Institute, May (1966). 452-459.

S. K. Gupta, W-K. Lu. Canadian Metallurgical Quarterly, 26(4) (1987) 329-339.

T. Umadevi, S. M. G. Kumar, S. Kumar, C. S. Gururaj Prasad, M. Ranjan. Ironmaking and Steelmaking, 35(5) (2008) 327-337.

J. Pal, C. Arunkumar, Y. Rajshekhar, G. Das, M. C. Goswami, T. Venugopalan. ISIJ International, 54(10) (2014) 2169–2178.

J. Pal, T. Venugopalan. Ironmaking and Steelmaking, 42(2) (2015) 139-147.

N. B. Carter, K. N. Clark, C. G. Thomas, K. M. G. Bowling. Ironmaking and steelmaking, 10(6) (1983) 243.

Published
2016/12/31
How to Cite
PAL, J., Ghorai, S., Ammasi, A., Hota, S. K., Koranne, V. M., & Venugopalan, T. (2016). Improving Reducibility of Iron Ore Pellets by Optimization of Physical Parameters. Journal of Mining and Metallurgy, Section B: Metallurgy, 53(1), 37-46. Retrieved from https://aseestant.ceon.rs/index.php/jmm/article/view/9674
Issue
Vol. 53 No. 1 (2017)
Section
Original Scientific Paper

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