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Studies on Highly Fluxed Iron Ore Pellets Hardened at 1100 °C to 1200 °C

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Abstract

The behaviors of highly fluxed (basicity 2, 4, 6, and 8) iron ore pellets heat hardened in the temperature range 1100 °C to 1200 °C were examined and are reported here. The highly fluxed (basicity 8) pellets exhibited 103 kg/pellet crushing strength and 43.65 pct porosity when heat hardened at 1180 °C. During heat hardening, calcium di-ferrite and calcium ferrite phases were observed; however, when they were heated at 1200 °C, high crushing strength (458.63 kg/pellet) with low porosity (4.57 pct) were noted due to low melting eutectic formation. In this study, it was possible to prepare highly fluxed pellets without sticking at 1180 °C with good strength and porosity.

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Authors and Affiliations

  1. Department of Metallurgical Engineering, IIT (BHU), Varanasi, Uttar Pradesh, 221005, India

    Raj Kumar Dishwar & O. P. Sinha

  2. Department of Metallurgical and Materials Engineering, National Institute of Technology, Durgapur, West Bengal, 713209, India

    Arup Kumar Mandal

Authors
  1. Raj Kumar Dishwar
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  2. Arup Kumar Mandal
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  3. O. P. Sinha
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Correspondence to Arup Kumar Mandal.

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Manuscript submitted August 3, 2018.

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Dishwar, R.K., Mandal, A.K. & Sinha, O.P. Studies on Highly Fluxed Iron Ore Pellets Hardened at 1100 °C to 1200 °C. Metall Mater Trans B 50, 617–621 (2019). https://doi.org/10.1007/s11663-019-01506-2

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