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Study of the Effect of Design Parameters on the Thermal Processes in a Blast Furnace Tuyere Using the ANSYS Software

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Steel in Translation Aims and scope

Abstract—

It is known that the maximum heat loss in the air-cooled tuyere of a blast furnace occur in the blowing channel. An effective way to reduce them is to install a heat-insulating ceramic insert. The heat-insulating inserts installed in the inner shell of air tuyeres for blast furnace no. 5 of PAO Severstal reduce the heat loss through a tuyere by 30%, and the inserts that insulate most of the inner surface of the head end additionally reduce the heat loss through a tuyere by 26.2%. The effect of design parameters on the thermal processes in the air tuyere of a blast furnace with a heat-insulating insert has been studied using the ANSYS software. In this work, to make the simulations more accurate, the whole air tuyere including a water-cooling circuit has been as a simulation area. The protrusion of the insert into the blowing channel by 2 mm improves the mixing of natural gas and blast, contributes to the gas combustion in the blowing channel, which leads to an increase in the heat loss through a blowing channel and a decrease in the durability of the insert. To increase the resistance of the insert and reduce the heat loss through a blowing channel, it is justified to use an elongated insert with variable thickness, which ranges from 13 to 8 mm in the blast direction, does not protrude into the blowing channel and has an angle between the normal to a wall of the inner nozzle and the axis of a hole for natural gas supply of about 30°. It is shown that to obtain the maximum heat content of the blast, which is affected by the combustion of natural gas and heat loss with cooling water in the blowing channel, the preferred option is one with an elongated insert with variable thickness, which changes from 10 to 8 mm in the blast direction, and with the axis of a hole for supplying natural gas perpendicular to a wall of the inner cup.

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Notes

  1. E.A. Volkov, A.L. Terebov, R.N. Maksiov, V.V Sukhanovskii, and E.A.Nikolaev took part in the studies.

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ADDITIONAL INFORMATION

Authors ORCID ID. S.D. Saifullaev (0000-0003-4012-1782), S.V. Albul (0000-0003-1802-7378), A.G. Radyuk (0000-0001-6758-9911).

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Authors and Affiliations

  1. National University of Science and Technology MISIS, 119049, Moscow, Russia

    S. D. Saifullaev, S. V. Albul, O. A. Kobelev, I. A. Levitskii, A. G. Radyuk & A. E. Titlyanov

  2. Russian State Research Center OAO CNIITMASH, 115088, Moscow, Russia

    O. A. Kobelev

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  1. S. D. Saifullaev
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  2. S. V. Albul
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  3. O. A. Kobelev
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  4. I. A. Levitskii
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  5. A. G. Radyuk
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  6. A. E. Titlyanov
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Correspondence to S. D. Saifullaev, S. V. Albul, O. A. Kobelev, I. A. Levitskii or A. G. Radyuk.

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Translated by M. Astrov

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Saifullaev, S.D., Albul, S.V., Kobelev, O.A. et al. Study of the Effect of Design Parameters on the Thermal Processes in a Blast Furnace Tuyere Using the ANSYS Software. Steel Transl. 51, 879–885 (2021). https://doi.org/10.3103/S096709122112010X

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  • DOI: https://doi.org/10.3103/S096709122112010X

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