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Reaction Behavior of Phosphorus in Multi-phase CaO–FeOX–SiO2–P2O5 Flux System

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  • First Online:
Extraction 2018

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

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Abstract

Calcium oxide is one of the major fluxing agents used for steel refining. Because unreacted CaO remains in slag in most cases, discharged slag is difficult to be recycled smoothly. With the growth of environmental concerns, improving utilization efficiency of CaO is required to reduce the amount of discharged slag and energy consumption. The authors have reported a resource and energy-saving process by using multi-phase flux for dephosphorization. Reaction behavior of phosphorus in multi-phase CaO–FeOX–SiO2–P2O5 flux system was investigated. Formation mechanism of P2O5-rich phases was clarified at the interface between solid CaO or 2CaO·SiO2 and molten CaO–FeOx–SiO2–P2O5 slag. Phase relationship and thermodynamic properties of 2CaO·SiO2-3CaO·P2O5 solid solution were observed to confirm the condensation of P2O5 in solid phase. Based on these results, reduction of CaO consumption, discharged slag curtailment, and energy-saving effects in the novel refining process by using multi-phase flux were discussed.

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Author information

Authors and Affiliations

  1. Graduate School of Frontier Sciences, The University of Tokyo, Tokyo, Japan

    Xiao Yang & Fumitaka Tsukihashi

  2. Graduate School of Engineering, The University of Tokyo, Tokyo, Japan

    Hiroyuki Matsuura

Authors
  1. Xiao Yang
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  2. Hiroyuki Matsuura
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  3. Fumitaka Tsukihashi
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Corresponding author

Correspondence to Fumitaka Tsukihashi .

Editor information

Editors and Affiliations

  1. Kingston Process Metallurgy Inc., Kingston, Canada

    Boyd R. Davis

  2. Missouri University of Science and Technology, Rolla, USA

    Michael S. Moats

  3. Rio Tinto Kennecott Utah Copper Corporation, South Jordan, USA

    Shijie Wang

  4. RHI Magnesita, Leoben, Austria

    Dean Gregurek

  5. BBA Inc., Montreal, Canada

    Joël Kapusta

  6. Extractive Metallurgy Consultant, Kingston, Canada

    Thomas P. Battle

  7. Missouri University of Science and Technology, Rolla, USA

    Mark E. Schlesinger

  8. Aurubis, Hamburg, Germany

    Gerardo Raul Alvear Flores

  9. University of Queensland, Queensland, Australia

    Evgueni Jak

  10. XPS-Glencore, Falconbridge, Canada

    Graeme Goodall

  11. University of Utah, Salt Lake City, USA

    Michael L. Free

  12. University of British Columbia, Vancouver, Canada

    Edouard Asselin

  13. University of Lorraine, Vandœuvre-lès-Nancy, France

    Alexandre Chagnes

  14. University of British Columbia, Vancouver, Canada

    David Dreisinger

  15. Newmont Mining, Elko, USA

    Matthew Jeffrey

  16. University of Arizona, Tucson, USA

    Jaeheon Lee

  17. Miller Metallurgical Services Pty Ltd., Brisbane, Australia

    Graeme Miller

  18. University of Cape Town, Rondebosch, Australia

    Jochen Petersen

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

    Virginia S. T. Ciminelli

  20. Shanghai University, Shanghai, China

    Qian Xu

  21. MetNetH20 Inc., Peterborough, Canada

    Ronald Molnar

  22. Hatch, Mississauga, Canada

    Jeff Adams

  23. University of British Columbia, Vancouver, Canada

    Wenying Liu

  24. SGS Minerals, Lakefield, Canada

    Niels Verbaan

  25. J.R. Goode and Associates Metallurgical Consulting, Toronto, Canada

    John Goode

  26. Avalon Rare Metals Inc., Toronto, Canada

    Ian M. London

  27. University of Toronto, Toronto, Canada

    Gisele Azimi

  28. SGS Minerals, Lakefield, Canada

    Alex Forstner

  29. Newmont Mining, Greenwood Village, USA

    Ronel Kappes

  30. Newmont Mining Corporation, Greenwood village, USA

    Tarun Bhambhani

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Yang, X., Matsuura, H., Tsukihashi, F. (2018). Reaction Behavior of Phosphorus in Multi-phase CaO–FeOX–SiO2–P2O5 Flux System. In: Davis, B., et al. Extraction 2018. The Minerals, Metals & Materials Series. Springer, Cham. https://doi.org/10.1007/978-3-319-95022-8_61

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