MAGNETIZING ROASTING OF IRON LATERITE ORE BY SUB-BITUMINOUS COAL AS REDUCTANT

Authors

  • NURYADI SALEH R & D Centre for Mineral and Coal Technology
  • PRAMUSANTO PRAMUSANTO R & D Centre for Mineral and Coal Technology

DOI:

https://doi.org/10.30556/imj.Vol9.No3.2006.639

Keywords:

laterite ore, davis tube, magnetized roasting technique

Abstract

The overburden of Pomalaa’s laterite ore is characterized by its high content of iron with average Fe content of 41.8 % and can be classified as iron cap deposit. As a significant iron ore resource to be used as raw material for iron and steel industry, upgrading of laterite ore is necessary to meet the requirement for iron making. The ore was treated by magnetized roasting technique followed by mag- netic separation to produce high iron content of magnetic concentrate. The ore were dominated by limonite iron minerals and has low magnetic property. However, roasting reduction treatment increased the magnetic properties of the ore due to transformation of magnetite.

References

Ghosh, Ahindra and Shanker Ray, Hem, 2001, Principles of Extractive Metallurgy, New Age International (P) Limited, Publishers.

Habashi, Fathi, 1997, Handbook of Extractive Metallurgy, Wiley-VCH.

PT Antam Tbk, 2004, Tim Pengembangan Pig Iron, Lokakarya Bahan Baku Lokal, PT Krakatau Steel Cilegon.

Purwanto, Hadi, 2003, Study on the Utilization of Indonesia Laterite Ore for Iron Making, PhD Thesis (unpublished), Tohoku University.

Purwanto, Hadi, B. Jeyadevan, R. Takahashi, and

J. Yagi, 2003, ISIJ Int., Vol.43, No.12, pp.1919-1926.

Rosenqvist, Terkel, 1983, Principles of Extractive Metallurgy, McGraw-Hill International Book Company.

Stephenson L, Robert, 1983, The Significant of Direct Reduction, The Iron & Steel Society of AIME.

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