Abstract
A flash ironmaking process is being developed at the University of Utah in which iron is produced directly from magnetite concentrate. The kinetics of magnetite reduction by a mixture of H2 and CO gases was determined in the temperature range 1150–1600 °C. Over 90% reduction degree was achieved at a temperature as low as 1250 °C within 4–6 s which is the typical residence time available in a flash reactor. The kinetics results were applied to experimental data obtained in a laboratory flash reactor in which H2 and CO gas mixtures were produced from in situ partial oxidation of natural gas with oxygen. CFD was used to simulate the laboratory reactor, and the results were in good agreement with the experimental data.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
H.Y. Sohn, Suspension ironmaking technology with greatly reduced energy requirement and CO2 emissions. Steel Times Int. 31, 68–72 (2007)
H.Y. Sohn et al., Suspension reduction technology for ironmaking with low CO2 emission and energy requirement. Iron Steel Technol (AIST Trans.) 6, 158–165 (2009)
M.E. Choi, H.Y. Sohn, Development of green suspension ironmaking technology based on hydrogen reduction of iron oxide concentrate: rate measurements. Ironmaking Steelmaking 37, 81–88 (2010)
H.K. Pinegar, M.S. Moats, H.Y. Sohn, Flowsheet development, process simulation and economic feasibility analysis for novel suspension ironmaking technology based on natural gas: part 1—flowsheet and simulation for ironmaking with reformerless natural gas. Ironmaking Steelmaking 39, 398–408 (2012)
M.Y.M. Ahmed, Phase equilibria between iron and slag in Co/CO2/H2/H2O atmospheres relevant to a novel flash ironmaking technology (Phd Dissertation), (University of Utah, 2013)
H.K. Pinegar, M.S. Moats, H.Y. Sohn, Flowsheet development, process simulation and economic feasibility analysis for novel suspension ironmaking technology based on natural gas: part 3—economic feasibility analysis. Ironmaking Steelmaking 40, 44–49 (2013)
Y. Mohassab, H.Y. Sohn, Effect of water vapor on sulfur distribution between liquid Fe and Mgo‐saturated slag relevant to a flash ironmaking technology. Steel Res. Int. (2014)
F. Chen et al., Hydrogen reduction kinetics of hematite concentrate particles relevant to a novel flash ironmaking process. Metall. Mater. Trans. B 46, 1133–1145 (2015)
H.Y. Sohn, M. Olivas-Martinez, Methods for calculating energy requirements for processes in which a reactant is also a fuel: need for standardization. JOM 66, 1557–1564 (2014)
Y. Mohassab, et al., Determination of total iron content in iron ore and Dri: titrimetric method versus ICP-OES analysis (Wiley, London, 2016)
F. Chen et al., Kinetics of the reduction of hematite concentrate particles by carbon monoxide relevant to a novel flash ironmaking process. Metall. Mater. Trans. B (2015)
T.K. Kim, S.O. Kim, I.J. Chung, Crystallization kinetics of thermotropic liquid crystalline poly(ester-imide)s. Eur. Polymer J. 33, 1613–1626 (1997)
P.G. Hedmark et al., Cold-crystallization in liquid crystalline poly(p-hydroxybenzoic acid-co-ethylene terephthalate). Polymer 30, 2068–2073 (1989)
B. Wunderlich, Chapter V—the Nucleation Step (Academic Press, London, 1976)
Acknowledgments
The authors acknowledge the financial support from the U.S. Department of Energy under Award Number DEEE0005751 with cost share by the American Iron and Steel Institute (AISI) and the University of Utah.
Disclaimer: This report was prepared as an account of work sponsored by an agency of the United States Government. Neither the United States Government nor any agency thereof, nor any of their employees, makes any warranty, express or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, or represents that its use would not infringe privately owned rights. Reference herein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise does not necessarily constitute or imply its endorsement, recommendation, or favoring by the United States Government or any agency thereof. The views and opinions of authors expressed herein do not necessarily state or reflect those of the United States Government or any agency thereof.
Author information
Authors and Affiliations
Corresponding author
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2017 The Minerals, Metals & Materials Society
About this paper
Cite this paper
Elzohiery, M., Fan, D.Q., Mohassab, Y., Sohn, H.Y. (2017). Flash Ironmaking from Magnetite Concentrate in a Laboratory Reactor: Experimental and CFD Work. 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_1
Download citation
DOI: https://doi.org/10.1007/978-3-319-51340-9_1
Published:
Publisher Name: Springer, Cham
Print ISBN: 978-3-319-51339-3
Online ISBN: 978-3-319-51340-9
eBook Packages: Chemistry and Materials ScienceChemistry and Material Science (R0)