The Optical Spectra of Hydrogen Plasma Smelting Reduction of Iron Ore: Application and Requirements
Pauna, Henri; Ernst, Daniel; Zarl, Michael; de Souza Filho, Isnaldi Rodrigues; Kulse, Michael; Bueyuekuslu, Oemer; Jovicevic-Klug, Matic; Springer, Hauke; Huttula, Marko; Schenk, Johannes; Fabritius, Timo; Raabe, Dierk (2024-05-15)
Wiley-VCH Verlag
15.05.2024
Pauna, H., Ernst, D., Zarl, M., Souza Filho, I.R.d., Kulse, M., Büyükuslu, Ö., Jovičević-Klug, M., Springer, H., Huttula, M., Schenk, J., Fabritius, T. and Raabe, D. (2024), The Optical Spectra of Hydrogen Plasma Smelting Reduction of Iron Ore: Application and Requirements. steel research int., 95: 2400028. https://doi.org/10.1002/srin.202400028
https://creativecommons.org/licenses/by/4.0/
© 2024 The Authors. Steel Research International published by Wiley-VCH GmbH. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
https://creativecommons.org/licenses/by/4.0/
© 2024 The Authors. Steel Research International published by Wiley-VCH GmbH. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
https://creativecommons.org/licenses/by/4.0/
Julkaisun pysyvä osoite on
https://urn.fi/URN:NBN:fi:oulu-202406174649
https://urn.fi/URN:NBN:fi:oulu-202406174649
Tiivistelmä
Abstract
Due to the ever-increasing demand for high-quality steel and the need to reduce CO2 emissions, research and development of sustainable steelmaking processes have gained a lot of interest in the past decade. One of these processes is the hydrogen plasma smelting reduction (HPSR), which has proven to be a promising solution for iron ore reduction where water vapor is formed instead of CO2. However, due to the highly dynamic and sometimes unpredictable behavior of plasmas and their nonlinear interaction with the liquid oxides, the monitoring and control of the underlying processes must be improved. This article explores the usage of optical emission spectroscopy (OES) and image analysis for HPSR process monitoring at laboratory and pilot scale. The results cover the time evolution of the OES and camera data with the focus on the most interesting radiating species, such as atomic hydrogen, iron, and oxygen together with the FeO molecule. In addition, the advantages, disadvantages, and requirements of these methods for HPSR process monitoring are discussed.
Due to the ever-increasing demand for high-quality steel and the need to reduce CO2 emissions, research and development of sustainable steelmaking processes have gained a lot of interest in the past decade. One of these processes is the hydrogen plasma smelting reduction (HPSR), which has proven to be a promising solution for iron ore reduction where water vapor is formed instead of CO2. However, due to the highly dynamic and sometimes unpredictable behavior of plasmas and their nonlinear interaction with the liquid oxides, the monitoring and control of the underlying processes must be improved. This article explores the usage of optical emission spectroscopy (OES) and image analysis for HPSR process monitoring at laboratory and pilot scale. The results cover the time evolution of the OES and camera data with the focus on the most interesting radiating species, such as atomic hydrogen, iron, and oxygen together with the FeO molecule. In addition, the advantages, disadvantages, and requirements of these methods for HPSR process monitoring are discussed.
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