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Processing of Hematite Ore by Romelt Duplex Process

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Metallurgist Aims and scope

The technological parameters of sinter ore smelting at the pilot Romelt furnace of the Novolipetsk Iron and Steel Works are given. The problems occurring during the processing of hematite ore by the smelting reduction Romelt process are shown. A modification of the technology is proposed, which involves the Romelt duplex process for smelting highly oxidized iron-bearing material. Calculations of smelting parameters when using the Romelt duplex process are carried out.

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Notes

  1. The description of the smelting process and its results based on the reports obtained at the Romelt furnace are published for the first time.

  2. The slag for analysis was taken directly from the bubbled slag bath by freezing-out on a metal tube lowered through the arch of one of the withdrawn upper tuyeres.

  3. The total iron content provided by the express laboratory of the factory workshop is overestimated at high concentrations due to an inappropriate reference sample.

  4. Hereinafter, the volume of gas is given in normal m3, i.e. at 0°C and 1 atm.

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Authors and Affiliations

  1. National University of Science and Technology “MISIS”, Moscow, Russia

    V. S. Valavin, Y. V. Pokhvisnev, S. A. Makeev & A. K. Zaytsev

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  1. V. S. Valavin
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  2. Y. V. Pokhvisnev
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  3. S. A. Makeev
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  4. A. K. Zaytsev
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Correspondence to V. S. Valavin.

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Translated from Metallurg, Vol. 67, No. 7, pp. 12–18, July, 2023.

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Valavin, V.S., Pokhvisnev, Y.V., Makeev, S.A. et al. Processing of Hematite Ore by Romelt Duplex Process. Metallurgist 67, 899–907 (2023). https://doi.org/10.1007/s11015-023-01579-0

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  • DOI: https://doi.org/10.1007/s11015-023-01579-0

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