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Dephosphorization and Desulfurization of Acid Oxide Melts and Produced Iron

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Experimental data are given for a study of dephosphorization and desulfurization of acid oxide melts. Results are provided for determination of phosphorus distribution between phases within acid melts. It is shown that diffusion mass transfer is a limiting stage for phosphorus removal into a gas phase. A two-stage preparation scheme is proposed for iron preparation from ore materials: melting a charge with low basicity (less than 0.9) without adding reducing agents, then oxide melt reduction with preparation of finished metal. The fundamental possibility of preparing iron with a low phosphorus and sulfur content by the suggested scheme is confirmed by experiment.

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Notes

  1. With higher basicity values, phosphorus removal into a gas phase is difficult due to the effect of calcium cations, and with lower basicity, due to greater melt viscosity, and as a consequence difficult mass transfer.

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Authors and Affiliations

  1. National University of Science and Technology MISiS, Moscow, Russia

    I. A. Krasnyanskaya, G. S Podgorodetskii & S. N. Paderin

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  1. I. A. Krasnyanskaya
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  2. G. S Podgorodetskii
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  3. S. N. Paderin
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Correspondence to I. A. Krasnyanskaya.

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Translated from Metallurg, No. 10, pp. 20–25, October, 2015.

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Krasnyanskaya, I.A., Podgorodetskii, G.S. & Paderin, S.N. Dephosphorization and Desulfurization of Acid Oxide Melts and Produced Iron. Metallurgist 59, 887–894 (2016). https://doi.org/10.1007/s11015-016-0189-7

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  • DOI: https://doi.org/10.1007/s11015-016-0189-7

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