{"id":4986,"date":"2025-01-29T23:05:49","date_gmt":"2025-01-29T20:05:49","guid":{"rendered":"https:\/\/jrn.isi.gov.ua\/?page_id=4986"},"modified":"2026-03-28T01:30:48","modified_gmt":"2026-03-27T22:30:48","slug":"doi-10-52150-2522-9117-2024-38-222-231","status":"publish","type":"page","link":"https:\/\/jrn.isi.gov.ua\/?page_id=4986&lang=en","title":{"rendered":"DOI: 10.52150\/2522-9117-2024-38-222-231"},"content":{"rendered":"\n

Molchanov Lavr Serhiiovych<\/strong>, Ph. D. (Tech.), Head of Department, Senior Researcher, Iron and Steel Institute of Z. I. Nekrasov National Academy of Sciences of Ukraine, Academican Starodubova Square, 1, Dnipro, 49107, Ukraine. ORCID: 0000-0001-6139-5956. E-mail: metall729321@gmail.com<\/p>\n\n\n\n

Arendach Natalia Anatoliievna, <\/strong>Ph. D. Student, Iron and Steel Institute of Z. I. Nekrasov National Academy of Sciences of Ukraine, Academican Starodubova Square, 1, Dnipro, 49107, Ukraine. ORCID: 0000-0002-0073-2362. Email: sheremetanatalia0116@gmail.com<\/p>\n\n\n\n

Golub Tetiana Serhiivna<\/strong>, 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: 0000-0001-9269-2953. E-mail: isinasu.golubts@gmail.com<\/p>\n\n\n\n

LABORATORY STUDY OF THE MIXING CHARACTERISTICS OF GAS JETS OF PROCESS GASES<\/strong><\/h2>\n\n\n\n

Abstract<\/strong>. Low-carbon and ultra-low-carbon steels are important structural material for modern industry. Due to the combination of unique properties of lightness, strength, ease of forming and welding with low deformation, they have gained widespread use both in the engineering industry and in the production of consumer goods. The production of this type of steel requires a complex process, because the removal of carbon from the iron-carbon melt below the critical concentration has a number of difficulties. First of all, they are related to the peculiarities of the course of reactions between low-concentration carbon dispersed in the melt and oxygen, which must be delivered to the reaction site. This leads to a significant overoxidation of the bath under the conditions of oxygen converter process, and determines the urgency of the search for alternative ways of reducing carbon in the melt. Therefore, a promising direction is to bring iron-carbon melt to low carbon content in steel ladles after the main smelting process with treatment of the melt with a mixture of gases containing a small amount of oxygen through bottom blowing blocks. Blowing gases, before entering the melt, must be evenly mixed to implement a rational combination of both the mixing process due to the neutral component and the supply of the oxidizing component, which is present in a small amount, to different parts of the liquid bath. In this regard, a bench physical study was conducted using shadow imaging methods for the design of a mixing chamber for a mixture of gases, that will precede the bottom purging block. The article presents the results of evaluating the characteristics of the mixing of gases that were fed through the same nozzles, located at different angles to each other, while maintaining the same gas consumption for each of the nozzles. It was noted that the purging unit equipment should be equipped with a mixing chamber according to empirically obtained results with channels for leading various purging gases into the chamber at an angle to the vertical axis within 25 – 40o<\/sup>, and the mixing chamber should have a ratio of height to diameter of 1:1.<\/p>\n\n\n\n

Key words<\/strong>: steel bucket; low carbon steel; purging through the bottom; oxygen-argon mixture; gas mixer design.<\/p>\n\n\n\n

DOI: <\/strong>https:\/\/doi.org\/10.52150\/2522-9117-2024-38-222-231<\/a><\/p>\n\n\n\n

For citation: <\/strong>Molchanov, L. S., Arendach, N. A., & Golub, T. S. (2024). Laboratory study of the mixing characteristics of gas jets of process gases.Fundamental and applied problems of ferrous metallurgy<\/em>, 38, 222-231. https:\/\/doi.org\/10.52150\/2522-9117-2024-38-222-231<\/a><\/p>\n\n\n\n

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Molchanov Lavr Serhiiovych, Ph. D. (Tech.), Head of Department, Senior Researcher, Iron and Steel Institute of Z. I. Nekrasov National Academy of Sciences of Ukraine, Academican Starodubova Square, 1, Dnipro, 49107, Ukraine. ORCID: 0000-0001-6139-5956. E-mail: metall729321@gmail.com Arendach Natalia Anatoliievna, Ph. D. Student, Iron and Steel Institute of Z. I. Nekrasov National Academy of Sciences of […]<\/p>\n","protected":false},"author":4,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-4986","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/jrn.isi.gov.ua\/index.php?rest_route=\/wp\/v2\/pages\/4986","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/jrn.isi.gov.ua\/index.php?rest_route=\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/jrn.isi.gov.ua\/index.php?rest_route=\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/jrn.isi.gov.ua\/index.php?rest_route=\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"https:\/\/jrn.isi.gov.ua\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=4986"}],"version-history":[{"count":3,"href":"https:\/\/jrn.isi.gov.ua\/index.php?rest_route=\/wp\/v2\/pages\/4986\/revisions"}],"predecessor-version":[{"id":5997,"href":"https:\/\/jrn.isi.gov.ua\/index.php?rest_route=\/wp\/v2\/pages\/4986\/revisions\/5997"}],"wp:attachment":[{"href":"https:\/\/jrn.isi.gov.ua\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=4986"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}