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Correlation Between Reduction Degree and Softening and Melting Properties of Pellets

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10th International Symposium on High-Temperature Metallurgical Processing

Part of the book series: The Minerals, Metals & Materials Series ((MMMS))

Abstract

With increasing application of oxygen-enriched or even oxygen blast furnace ironmaking technologies, more intensive indirect reduction, followed by softening and melting, of iron ore pellets may take place in the blast furnace . In this study, the correlation between reduction degree and softening and melting properties of pellets was investigated. The results showed that with the increased of the reduction degree , the softening start temperature (Ts) of pellets did not change significantly and melting start temperature (Tm) obviously increased. The dropping temperature of the pellets slightly increased with the reduction degree of the pellets increase. Since the increased temperature range of the softening zone interval (ΔTS/°C) of the pellet was greater than the reduced temperature range of the melting zone interval (ΔTM/°C), the range of the cohesive of the pellet was increased. The permeability of the pellets was obviously improved as the reduction degree increased. This study provided important guidance for blast furnace production under high reduction degree conditions.

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Authors and Affiliations

  1. State Key Laboratory of Advanced Metallurgy, University of Science and Technology Beijing, Beijing, 100083, China

    Yu-Zhu Pan, Jing-Song Wang, Huai-Xuan Feng & Qing-Shan Lin

  2. Yong Feng Group, Qihe, Shandong, 251100, China

    Ai-Jun Zhang

  3. School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing, 100083, China

    Lin Lin

Authors
  1. Yu-Zhu Pan
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  2. Ai-Jun Zhang
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  3. Lin Lin
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  4. Jing-Song Wang
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  5. Huai-Xuan Feng
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  6. Qing-Shan Lin
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Corresponding author

Correspondence to Jing-Song Wang .

Editor information

Editors and Affiliations

  1. Central South University, Changsha, China

    Tao Jiang

  2. Michigan Technological University, Houghton, MI, USA

    Jiann-Yang Hwang

  3. RHI Magnesita, Leoben, Austria

    Dean Gregurek

  4. Central South University, Changsha, China

    Zhiwei Peng

  5. Montana Tech, Butte, MT, USA

    Jerome P. Downey

  6. The University of Queensland, Brisbane, QLD, Australia

    Baojun Zhao

  7. Istanbul Technical University, Istanbul, Turkey

    Onuralp Yücel

  8. Atilim University, Ankara, Turkey

    Ender Keskinkilic

  9. University of Concepción, Concepción, Chile

    Rafael Padilla

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© 2019 The Minerals, Metals & Materials Society

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Cite this paper

Pan, YZ., Zhang, AJ., Lin, L., Wang, JS., Feng, HX., Lin, QS. (2019). Correlation Between Reduction Degree and Softening and Melting Properties of Pellets. In: Jiang, T., et al. 10th International Symposium on High-Temperature Metallurgical Processing. The Minerals, Metals & Materials Series. Springer, Cham. https://doi.org/10.1007/978-3-030-05955-2_49

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