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<article article-type="research-article" dtd-version="1.3" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xml:lang="ru"><front><journal-meta><journal-id journal-id-type="publisher-id">blackmet</journal-id><journal-title-group><journal-title xml:lang="ru">Известия высших учебных заведений. Черная Металлургия</journal-title><trans-title-group xml:lang="en"><trans-title>Izvestiya. Ferrous Metallurgy</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">0368-0797</issn><issn pub-type="epub">2410-2091</issn><publisher><publisher-name>National University of Science and Technology "MISIS"</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.17073/0368-0797-2020-6-419-427</article-id><article-id custom-type="elpub" pub-id-type="custom">blackmet-1903</article-id><article-categories><subj-group subj-group-type="heading"><subject>Research Article</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="ru"><subject>МЕТАЛЛУРГИЧЕСКИЕ ТЕХНОЛОГИИ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>METALLURGICAL TECHNOLOGIES</subject></subj-group></article-categories><title-group><article-title>Влияние модифицированной гуминовой кислоты (MHA) как связующей добавки на обжиг брикетированного монгольского железорудного концентрата «Tumurtei»</article-title><trans-title-group xml:lang="en"><trans-title>Effect of modified humic acid (MHA) binder on roasting behavior of mongolian “Tumurtei” iron ore concentrate briquettes</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Сараатанбазар</surname><given-names>Баяра</given-names></name><name name-style="western" xml:lang="en"><surname>Saraatanbazar</surname><given-names>Bayaraa</given-names></name></name-alternatives><bio xml:lang="ru"><p>аспирант</p><p>410083, Чанша, Хунань</p></bio><bio xml:lang="en"><p>Ph.D. Student</p><p>410083, Changsha, Hunan</p></bio><email xlink:type="simple">s.bayar9@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Ли</surname><given-names>Гуан-хуэй</given-names></name><name name-style="western" xml:lang="en"><surname>Li</surname><given-names>Guang-hui</given-names></name></name-alternatives><bio xml:lang="ru"><p>профессор</p><p>410083, Чанша, Хунань</p></bio><bio xml:lang="en"><p>Professor</p><p>410083, Changsha, Hunan</p></bio><email xlink:type="simple">2667361847@qq.com</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Школа обогащения полезных ископаемых и биоинженерии, Центральный Южный университет</institution><country>Китай</country></aff><aff xml:lang="en"><institution>School of Minerals Processing and Bioengineering, Central South University</institution><country>China</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2020</year></pub-date><pub-date pub-type="epub"><day>01</day><month>07</month><year>2020</year></pub-date><volume>63</volume><issue>6</issue><fpage>419</fpage><lpage>427</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Сараатанбазар Б., Ли Г., 2020</copyright-statement><copyright-year>2020</copyright-year><copyright-holder xml:lang="ru">Сараатанбазар Б., Ли Г.</copyright-holder><copyright-holder xml:lang="en">Saraatanbazar B., Li G.</copyright-holder><license xml:lang="ru" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>Данная работа распространяется под лицензией Creative Commons Attribution 4.0.</license-p></license><license xml:lang="en" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>This work is licensed under a Creative Commons Attribution 4.0 License.</license-p></license></permissions><self-uri xlink:href="https://fermet.misis.ru/jour/article/view/1903">https://fermet.misis.ru/jour/article/view/1903</self-uri><abstract><p>Существуют две основные группы связующих добавок: органические и неорганические для агломерационного процесса и спекающие для производства стали. В данной работе изучено влияние композиционного связующего на обжиг монгольских брикетов из железорудного концентрата «Tumurtei» в атмосфере воздуха с целью выявления оптимальных параметров их поведения при обжиге с тремя различными связующими MHA для прямого восстановления. Лигнит содержит органические и неорганические вещества и, согласно многим предшествующим исследованиям, он может быть сырьем для извлечения композиционного связующего. Прессованный железный концентрат со связующим MHA подвергали процессу окисления и восстановления в электропечи. Оптимальные условия экспериментов были следующими. Параметры процесса брикетирования выполнены в соответствии с испытанием на сжатие без связующего при давлении 0,75 т·см–2 , времени прессования 5 с, содержании влаги 8 %, окислении при 950 °C в потоке воздуха в течение 10 мин и восстановлении при 1100 °С в атмосфере СО. В результате связующее MHA, извлеченное из лигнита «Baganuur», повлияло на степень восстановления сильнее, чем два других связующих в этом исследовании. Общее содержание железа в восстановленном продукте достигло 98,33 % с 1 % МНА, извлеченного из лигнита «Baganuur». Степень восстановления выражена потерей кислорода.</p></abstract><trans-abstract xml:lang="en"><p>There are two major groups of binder: organic and inorganic binder for agglomeration process for reduction, and sintering for steel production. In this work, effect of composite binder on roasting of Mongolian “Tumurtei” iron ore concentrate briquettes in ambient atmosphere was studied, aiming to clarify optimal parameters of roasting behavior with three different MHA binders for direct reduction. Lignite contains organic and inorganic substances, and according to many previous investigations, it can be raw material for extraction of composite binder. Pressed iron concentrate with MHA binder was subjected to oxidation and reduction process in the electrical furnace. The optimum conditions of experiments were as follows. Parameters of briquetting process were carried out according to the no-binder briquetting test 0.75 t·cm–2 pressure, 5 seconds pressing time, 8 % of moisture content, oxidation at 950 °C under air flow for 10 min, and reduction at 1100 °C under CO atmosphere. As a result, MHA binder extracted from “Baganuur” lignite affected the reduction degree higher than another two binders in this study. Total iron content in reduced iron is attained to 98.33 % with 1 % of MHA extracted from “Baganuur” lignite. Reduction degree can be expressed by loss of oxygen.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>магнетит</kwd><kwd>связующее MHA</kwd><kwd>восстановление</kwd><kwd>брикет</kwd></kwd-group><kwd-group xml:lang="en"><kwd>magnetite</kwd><kwd>MHA binder</kwd><kwd>reduction</kwd><kwd>briquette</kwd></kwd-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Jiang T., Qiu G., Xu J., Zhu D., Singh R. Direct Reduction of Composite Binder Pellets and Use of DRI. Electrotherm Press, Ahmedabad, India, 2007, pp. 35–215.</mixed-citation><mixed-citation xml:lang="en">Jiang T., Qiu G., Xu J., Zhu D., Singh R. Direct Reduction of Composite Binder Pellets and Use of DRI. 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