Abstract
In manganese ferroalloys production, gases generated in the lower part of the submerged arc furnace must rise through the solid charge materials. Poor charge permeability may be detrimental to furnace operation by causing clogging and eruptions which, in addition to being a safety hazard, reduce productivity. Sufficient gas permeability in the furnace is also important to achieve proper preheating and prereduction of the charge material; this is also true if the material is pre-treated in a separate unit. The permeability of manganese ores was investigated by measuring the pressure drop while passing air through a manganese ore particle bed at different velocities. Several particle size distributions were investigated, and measurements were done on both raw and pre-treated ores. It was seen that ores with larger fractions of smaller particle sizes gave a higher pressure drop and fluidized at lower gas velocities. Coefficients in established correlations for pressure drop were calibrated for the tested manganese ores. These calibrated correlations were then applied in numerical flow calculations of typical furnace and pre-treatment scenarios to study the sensitivity of pressure drop and furnace operation to the permeability of the ore material used.
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References
Olsen SE, Tangstad M, Lindstad T (2007) Production of manganese ferroalloys. Tapir Academic Press, Trondheim
Pochart G, Joncourt L, Touchard N, Perdon C (2007) Metallurgical benefit of reactive high grade ore in manganese alloys manufacturing. 11th Int Ferroalloys Congr 14
Naruse W (1974) The production of manganese alloys by the sintering process. Nippon Denko Co, Johannesburg, p 6
Sambo S, Hockaday L, Seodigeng T (2021) Experimental study of packed bed heat transfer in a shaft kiln to pre-heat manganese ore with hot air. Social Science Research Network, Rochester. https://doi.org/10.2139/ssrn.3926617
Sambo SN, Hockaday CSA, Seodigeng T (2020) The development of a heat and mass transfer model for a shaft kiln to preheat manganese ore with hot air, model development methodology. In: Peng Z, Hwang J-Y, Downey JP et al (eds) 11th international symposium on high-temperature metallurgical processing. Springer International Publishing, Cham, pp 43–53. https://doi.org/10.1007/978-3-030-36540-0_5
Pais J, Brown W, Saab MW (1998) Production of HCFeMn using high proportions of sinter in the charge. 8th Int. Ferroalloys Congr, Beijing, p 6
Tangstad M, Ichihara K, Ringdalen E (2015) Pretreatment unit in ferromanganese production. 14th Int Ferroalloys Congr, Kyiv
Gasik MM (2013) Handbook of ferroalloys. Elsevier. https://doi.org/10.1016/B978-0-08-097753-9.00001-0
Nordhus A (2022) Modelling gas flow in furnaces for Si production. Master Thesis, Norwegian University of Science and Technology
Acknowledgments
This work is part of the PreMa project, which has received funding from the European Union’s Horizon 2020 Research and Innovation Programme under Grant Agreement No 820561.
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Schanche, T.L., Reynolds, Q., Olsen, J.E., Einarsrud, K.E., Ringdalen, E. (2023). Permeability of Manganese Charge Materials. In: Proceedings of the 62nd Conference of Metallurgists, COM 2023. COM 2023. Springer, Cham. https://doi.org/10.1007/978-3-031-38141-6_96
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DOI: https://doi.org/10.1007/978-3-031-38141-6_96
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