The Optical Spectra of Hydrogen Plasma Smelting Reduction of Iron Ore: Application and Requirements
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In: Steel research international, Vol. 95.2024, No. 8, 2400028, 08.2024.
Research output: Contribution to journal › Article › Research › peer-review
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TY - JOUR
T1 - The Optical Spectra of Hydrogen Plasma Smelting Reduction of Iron Ore
T2 - Application and Requirements
AU - Pauna, Henri
AU - Ernst, Daniel
AU - Zarl, Michael Andreas
AU - Souza Filho, Isnaldi Rodrigues de
AU - Kulse, Michael
AU - Büyükuslu, Ömer
AU - Jovičević-Klug, Matic
AU - Springer, Hauke
AU - Huttula, Marko
AU - Schenk, Johannes
AU - Fabritius, Timo
AU - Raabe, Dierk
N1 - Publisher Copyright: © 2024 The Authors. Steel Research International published by Wiley-VCH GmbH.
PY - 2024/8
Y1 - 2024/8
N2 - 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.
AB - 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.
KW - color analysis
KW - hydrogen plasma smelting reduction
KW - iron ore
KW - optical emission spectroscopy
KW - process monitoring
UR - http://www.scopus.com/inward/record.url?scp=85192945460&partnerID=8YFLogxK
U2 - 10.1002/srin.202400028
DO - 10.1002/srin.202400028
M3 - Article
AN - SCOPUS:85192945460
VL - 95.2024
JO - Steel research international
JF - Steel research international
SN - 1611-3683
IS - 8
M1 - 2400028
ER -
