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8th International Symposium on High-Temperature Metallurgical Processing pp 311–322Cite as

Influence of Ruhrstahl Heraeus Refining Process on Aluminum Consumption in Interstitial-Free Steel Smelting Process

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

Abstract

In order to decrease high aluminum consumption in Interstitial-Free (IF) steel production in a steel plant, Ruhrstahl Heraeus (RH) process data from 2428 heats were analyzed by statistical methods. The results showed that the blowing oxygen quantity and oxygen activity, before the RH and before deoxidization, have positive correlations with aluminum consumption, especially the blowing oxygen quantity. Waiting time before refining also has a positive correlation with aluminum consumption when it exceeds 7 min. On the contrary, steel temperature before RH has a significant negative correlation with aluminum consumption, when it is between 1600 and 1630 °C. According to the statistical results, the RH refining process was optimized when the steel temperature before RH was controlled between 1630 and 1645 °C, waiting time was controlled at less than 7 min, blowing oxygen quantity was controlled to less than 100 m3, and the oxygen activity before RH was controlled between 0.050–0.075%. After optimization, the reduction of aluminum consumption was remarkable. Average aluminum consumption decreased from 1.45 to 1.17 kg/t steel.

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Acknowledgements

This work was supported by the Natural Science Foundation of China (No. 51404022).

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Authors and Affiliations

  1. State Key Laboratory of Advanced Metallurgy, University of Science and Technology Beijing, Xueyuan Road 30, 100083, Beijing, China

    Siyuan Zhang, Yanping Bao, Chaojie Zhang, Lu Lin & Wei Xiao

Authors
  1. Siyuan Zhang
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  2. Yanping Bao
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  3. Chaojie Zhang
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  4. Lu Lin
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  5. Wei Xiao
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Corresponding author

Correspondence to Yanping Bao .

Editor information

Editors and Affiliations

  1. Michigan Technological University , Houghton, Michigan, USA

    Jiann-Yang Hwang

  2. Central South University , Changsha, Hunan, China

    Tao Jiang

  3. Proval Partners SA , Lausanne, Switzerland

    Mark William Kennedy

  4. Istanbul Technical University , Istanbul, Turkey

    Onuralp Yücel

  5. Dept of Materials Science and Eng, Carnegie Mellon Univ Dept of Materials Science and Eng, Pittsburgh, Pennsylvania, USA

    P. Chris Pistorius

  6. Universidade Federal de Minas Gerais , Belo Horizonte, Brazil

    Varadarajan Seshadri

  7. The University of Queensland , Brisbane, Australia

    Baojun Zhao

  8. RHI AG , Leoben, Austria

    Dean Gregurek

  9. Atilim University , Ankara, Turkey

    Ender Keskinkilic

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© 2017 The Minerals, Metals & Materials Society

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Zhang, S., Bao, Y., Zhang, C., Lin, L., Xiao, W. (2017). Influence of Ruhrstahl Heraeus Refining Process on Aluminum Consumption in Interstitial-Free Steel Smelting Process. In: Hwang, JY., et al. 8th International Symposium on High-Temperature Metallurgical Processing. The Minerals, Metals & Materials Series. Springer, Cham. https://doi.org/10.1007/978-3-319-51340-9_31

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