DOI: 10.52150/2522-9117-2023-37-139-157

Semenov Yurii Stanislavovych, Ph. D. (Tech.), Senior Researcher, Iron and Steel Institute of Z. I. Nekrasov National Academy of Sciences of Ukraine, Academican Starodubova Square, 1, Dnipro, 49107, Ukraine. ORCID: 0000-0001-8344-961X. E-mail: yuriy.semenov.isi@gmail.com

Horupakha Viktor Volodymyrovych, Researcher, Iron and Steel Institute of Z. I. Nekrasov National Academy of Sciences of Ukraine, Academican Starodubova Square, 1, Dnipro, 49107, Ukraine. ORCID: 0000-0003-0531-1871. E-mail: viktor.horupakha@gmail.com

Vashchenko Serhii Volodymyrovych, Ph. D. (Tech.), Senior Researcher, Iron and Steel Institute of Z. I. Nekrasov National Academy of Sciences of Ukraine, Academican Starodubova Square, 1, Dnipro, 49107, Ukraine. ORCID: 0000-0001-8344-961X. E-mail: sergeyvaschenko@yandex.ua

KhudyakovOleksandr Yuriiovych, Ph. D. (Tech.), Senior Researcher, Iron and Steel Institute of Z. I. Nekrasov National Academy of Sciences of Ukraine, Academican Starodubova Square, 1, Dnipro, 49107, Ukraine. ORCID: 0000-0002-6507-1120.

Shumelchyk Yevhen Ihorovych, Ph. D. (Tech.), Senior Researcher, Iron and Steel Institute of Z. I. Nekrasov National Academy of Sciences of Ukraine, Academican Starodubova Square, 1, Dnipro, 49107, Ukraine. ORCID: 0000-0001-5350-6425. E-mail: shei@ua.fm

Baiul Kostiantyn Vasylovych, D. Sc. (Tech.), Senior Researcher, Iron and Steel Institute of Z. I. Nekrasov National Academy of Sciences of Ukraine, Academican Starodubova Square, 1, Dnipro, 49107, Ukraine. ORCID:  0000-0003-1426-7956. E-mail: baiulkonstantin@gmail.com

DEVELOPMENT OF STABILIZATION MEASURES AIMED AT REMOVING ZINC WITH SMELTING PRODUCTS AND ACCUMULATING TITANIUM IN THE HEARTH OF A BLAST FURNACE

Abstract. The article presents the results of the development of stabilization measures aimed at the removal of zinc with the products of melting and accumulation of titanium in the hearth of a blast furnace. The relevance of the development and use in practice of such measures is due to the unstable fuel and raw materials conditions for the production of pig iron, when their stabilization is a complex and difficult task, as well as the need to extend the campaign of blast furnaces during the overhaul period. The negative effect of zinc oxides on the condition of the blast furnace shaft lining, accompanied by slab formation, and the overconsumption of specific coke consumption, which occurs when zinc circulates in the volume of the blast furnace, require measures to remove zinc from the smelting products. The article proposes such measures, which consist of flushing according to the proposed schedule during the operation of the blast furnace at planned blowing parameters and with the provision of the necessary thermal reserve. In order to lengthen the campaign of a blast furnace, one of the most common methods for protecting the hearth lining is the periodic introduction of titanium-containing materials into the charge of blast furnaces. The entry of titanium oxides into the furnace, as a rule, is ensured by the use of concentrate or specially prepared ilmenite briquettes with a high titanium content as part of the sinter charge, which can be introduced directly into the composition of the blast furnace charge. The article analyzes the experience of using titanium-containing materials as part of a blast furnace charge and formulates measures to intensify skull formation in the hearth.

Key words: blast furnace, blast furnace control, thermal state, pulverized coal, zinc content in the charge, titanium content in cast iron, hearth washings.

DOI: https://doi.org/10.52150/2522-9117-2023-37-139-157

For citation: Semenov, Yu. S., Horupakha, V. V., Vashchenko, S. V., Khudyakov, O. Yu., Shumelchyk, Ye. I., Baiul. K. V. (2023). Development of stabilization measures aimed at removing zinc with smelting products and accumulating titanium in the hearth of a blast furnace. Fundamental and applied problems of ferrous metallurgy, 37, 139-157. https://doi.org/10.52150/2522-9117-2023-37-139-157

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