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Experimental Study on the Phase Diagram of the Fe-O-S System

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Abstract

The phase equilibria information on the Fe-O-S system holds high importance for industrial metallurgical processes. The phase diagram of the Fe-O-S system in equilibrium with metallic iron and wustite has been constructed at temperatures between 1223 K and 1473 K (950 °C and 1200 °C). In addition, the eutectic temperature of the system has been determined to range between 1188 K and 1193 K (915 °C and 920 °C). High-temperature equilibration/quenching/electron probe X-ray microanalysis technique has been used to measure the compositions of the phases in equilibrium in the system.

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Acknowledgments

The authors would like to thankfully acknowledge the financial supports received from the Improved Sulfide Smelting (ISS)—Project of ELEMET Program and Tekes—the Finnish Funding Agency for Technology and Innovation, Boliden Harjavalta, Boliden Kokkola, Norilsk Nickel Harjavalta Oy, and Outotec Oyj. The supportive chemical analyses were conducted at Boliden Harjavalta and Outotec Oyj, Pori Research Center. The authors would also like to thank the Finnish Foundation for Technology Promotion (TES), Walter Ahlström Foundation, and Technology Industries of Finland Centennial Foundation Fund for the Association of Finnish Steel and Metal Producers for providing the funding for the visit to the University of Queensland of H. Johto. The authors thank Ms. Suping Huang and Mr. Imam Santoso from PYROSEARCH at the University of Queensland for their valuable help.

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Authors and Affiliations

  1. Metallurgical Thermodynamics and Modelling Research Group, School of Chemical Technology, Aalto University, Espoo, Finland

    Hannu Johto (Doctoral Candidate) & Pekka Taskinen (Professor)

  2. PYROSEARCH, School of Chemical Engineering, The University of Queensland, Brisbane, QLD, Australia

    Hector M. Henao (Senior Research Fellow) & Evgueni Jak (Professor)

  3. The School of Mechanical and Mining Engineering, The University of Queensland, Brisbane, QLD, Australia

    Hector M. Henao (Senior Research Fellow)

Authors
  1. Hannu Johto
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  2. Hector M. Henao
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  3. Evgueni Jak
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  4. Pekka Taskinen
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Correspondence to Hannu Johto.

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Manuscript submitted April 2, 2013.

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Johto, H., Henao, H.M., Jak, E. et al. Experimental Study on the Phase Diagram of the Fe-O-S System. Metall Mater Trans B 44, 1364–1370 (2013). https://doi.org/10.1007/s11663-013-9923-8

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  • DOI: https://doi.org/10.1007/s11663-013-9923-8

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