Mineralogy of Iron Ores of Different Alumina Levels from Singhbhum Belt and Their Implication on Sintering Process


To increase the life of the mines, ores of lower quality are blended with the higher quality ores. In general, the blending of ores at mines site is controlled by the chemical composition of the ores by controlling the Al2O3 and SiO2 levels on the lowest side possible. However, if there is a change in mineralogy, like an increase in hydrous phase the composition may still be the same, but this difference may affect the sinterability and sinter quality. The mineralogical investigation of iron ores and their chemistry are required to avoid the increase in deleterious elements during sintering. By the know-how of the behavior of individual iron ores in terms of their sinterability, in advance, the quality of the iron ores blend can be optimized to produce quality sinter and productivity. Characterisation studies conducted on iron ores of Singhbhum Orissa belt revealed that hematite, goethite, clay, gibbsite and quartz occur in all the iron ore samples but in variable proportions. Traces of alumina, present as solid solution in the iron oxide minerals, has also contributed Al2O3 to the ores.

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Sinha, M. , Nistala, S. , Chandra, S. and Mankhand, T. (2015) Mineralogy of Iron Ores of Different Alumina Levels from Singhbhum Belt and Their Implication on Sintering Process. Journal of Minerals and Materials Characterization and Engineering, 3, 180-193. doi: 10.4236/jmmce.2015.33021.

Conflicts of Interest

The authors declare no conflicts of interest.


[1] Loo, C.E. (2005) A Perspective of Geothitic Ore Sintering Fundamentals. ISIJ, 45, 436-448.
[2] Lu, L., Holmes, R.J. and Manuel, J.R. (2007) Effects of Alumina on Sintering Performance of Hematite Iron Ores. ISIJ, 47, 349-358. http://dx.doi.org/10.2355/isijinternational.47.349
[3] Pecchio, et al., Eds. (2004) Applied Mineralogy. ICAM-BR, São Paulo.
[4] Yang., L.X. (2005) Sintering Fundamentals of Magnetite Alone and Blended with Hematite and Hematite/Goethite Ores. ISIJ International, 45, 469.
[5] Panigrahy, S.C., Rigaud, M.A.J. and Dilewijns, J. (1985) Effect of Dolomite Addition on the Properties of Sintered Ore Produced from the High Iron Ore of Alumina. Steel Research, 56, 35.
[6] Pimenta, H.P. and Seshadri, V. (2002) Influence of Al2O3 and TiO2 Degradation Behaviour of Sinter and Hematite at Low Temperatures on Reduction. Ironmaking Steelmaking, 29, 175-179.
[7] Caparoli, L. (1998) ICSTI, Iron Ore Micro Structure Properties—Performance Relation in Sintering Process. Ironmaking Steelmaking Conference Proceedings (B), 3, 123-135.
[8] Okazaki, et al. (2001) Advanced Approach to Intelligent Iron Making Processes. Effect of Mineralogical Properties of Iron Ore on Pore Formation of Sinter. Tetsu-to-Hagané, 87, 298-304.
[9] Goldring, D.C. (2003) Iron Ore Categorisation for the Iron and Steel Industry. Applied Earth Science, 112, 5-17. http://dx.doi.org/10.1179/0371745032501162

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