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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">10.17073/0368-0797-2020-11-12-946-951</article-id><article-id custom-type="elpub" pub-id-type="custom">blackmet-2017</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>ФИЗИКО-ХИМИЧЕСКИЕ ОСНОВЫ МЕТАЛЛУРГИЧЕСКИХ ПРОЦЕССОВ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>PHYSICO-CHEMICAL BASICS OF METALLURGICAL PROCESSES</subject></subj-group></article-categories><title-group><article-title>Равновесное содержание лантана в металле под шлаком системы СаО – SiO2 – La2O3 – 15 % Al2O3 – 8 % MgO</article-title><trans-title-group xml:lang="en"><trans-title>Equilibrium content of lanthanum in metal under the slag of СаО – SiO2 – La2O3 – 15 % Al2O3 – 8 % MgO system</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>Уполовникова</surname><given-names>А. Г.</given-names></name><name name-style="western" xml:lang="en"><surname>Upolovnikova</surname><given-names>A. G.</given-names></name></name-alternatives><bio xml:lang="ru"><p>к.т.н., старший научный сотрудник</p><p>620016, Россия, Екатеринбург, ул. Амундсена, 101</p></bio><bio xml:lang="en"><p>Cand. Sci. (Eng.), Senior Researcher</p><p>Ekaterinburg</p></bio><email xlink:type="simple">upol.ru@mail.ru</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>Бабенко</surname><given-names>А. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Babenko</surname><given-names>A. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>д.т.н., главный научный сотрудник лаборатории пирометаллургии цветных металлов</p><p>620016, Россия, Екатеринбург, ул. Амундсена, 101</p></bio><bio xml:lang="en"><p>Dr. Sci. (Eng.), Chief Researcher of the Laboratory of Pyrometallurgy of Nonferrous Metals</p><p>Ekaterinburg</p></bio><email xlink:type="simple">babenko251@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>Смирнов</surname><given-names>Л. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Smirnov</surname><given-names>L. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>академик РАН, д.т.н., главный научный сотрудник</p><p>620016, Россия, Екатеринбург, ул. Амундсена, 101</p></bio><bio xml:lang="en"><p>Academician, Dr. Sci. (Eng.), Chief Researcher</p><p>Ekaterinburg</p></bio><email xlink:type="simple">ntm2000@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Институт металлургии УрО РАН</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Institute of Metallurgy, UB RAS</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2020</year></pub-date><pub-date pub-type="epub"><day>02</day><month>01</month><year>2021</year></pub-date><volume>63</volume><issue>11-12</issue><fpage>946</fpage><lpage>951</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Уполовникова А.Г., Бабенко А.А., Смирнов Л.А., 2021</copyright-statement><copyright-year>2021</copyright-year><copyright-holder xml:lang="ru">Уполовникова А.Г., Бабенко А.А., Смирнов Л.А.</copyright-holder><copyright-holder xml:lang="en">Upolovnikova A.G., Babenko A.A., Smirnov L.A.</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/2017">https://fermet.misis.ru/jour/article/view/2017</self-uri><abstract><p>Приведены результаты термодинамического моделирования равновесного содержания лантана в металле под шлаком системы СаО – SiO2 – La2О3 – Аl2O3 – МgO, соответствующим химическому составу 16 точек плана локального симплекса. Использован программный комплекс HSC 8.03 Chemistry (Outokumpu) в совокупности с методом симплексных решеток планирования. Рассмотрен шлак, представленный оксидной системой СаО – SiO2 – La2O3 – 15 % Аl2O3 – 8 % МgO в широком диапазоне химического состава, при температурах 1550 и 1650 °С, и металл, содержащий 0,06 % C, 0,25 % Si, 0,05 % Al (здесь и далее указаны % (по массе)). Результаты математического моделирования представлены графически в виде диаграмм состав – равновесное содержание лантана. Отмечено заметное влияние основности шлака на равновесную концентрацию лантана в металле. Повышение основности шлака c 2 до 5 при температуре 1550 °С приводит к повышению равновесного содержания лантана в металле от 0,2 ppm в области концентрации оксида лантана 1 – 5 % до 7 ppm в области повышенной до 4 – 7 % концентрации оксида лантана, т.е. рост основности шлака благоприятно сказывается на развитии процесса восстановления лантана. Рост температуры металла также оказывает положительное влияние на процесс восстановления лантана. С повышением температуры до 1650 °С равновесное содержание лантана в металле увеличивается от 0,2 ppm в области концентрации оксида лантана 1 – 3 % до 12 ppm в области повышенной до 4 – 7 % концентрации оксида лантана. На диаграммах области химического состава шлаков, содержащих 56 – 61 % CaO, 12 – 14 % SiO2 и 4 – 7 % La2O3 , обеспечивают в интервале температур 1550 и 1650 °С концентрацию лантана в металле на уровне 7 – 12 ppm. Подтверждена решающая роль основности шлака, концентрации оксида лантана и температурного фактора в развитии процесса восстановления лантана из шлаков изучаемой оксидной системы алюминием, растворенным в металле.</p></abstract><trans-abstract xml:lang="en"><p>Thermodynamic modeling results of lanthanum equilibrium content in metal under the slag of CaO – SiO2 – La2О3 – Al2O3 – MgO system corresponding to chemical composition of 16 points of local simplex plan are presented using the HSC 8.03 Chemistry (Outokumpu) software package in combination with the simplex planning lattice method. In the work, slag is represented by CaO – SiO2 – La2O3 – – 15 % Al2O3 – 8 % MgO oxide system in a wide range of chemical composition for temperatures of 1550 and 1650 °C, and metal contains 0.06 % C, 0.25 % Si, 0.05 % Al (in this expression and hereinafter in mass.%). The results of mathematical modeling are shown graphically in the form of composition - equilibrium content diagrams of lanthanum. There is significant effect of slag basicity on the lanthanum equilibrium content in metal. An increase in slag basicity from 2 to 5 at temperature of 1550 °C leads to an increase in the lanthanum equilibrium content from 0.2 ppm in the region of lanthanum oxide concentration of 1 – 5 % to 7 ppm in the region of increased concentration of lanthanum oxide to 4 – 7 %, hence the increase in slag basicity favorably affects development of lanthanum reduction. Increase in metal temperature also has positive effect on lanthanum reduction process. As temperature rises to 1650 °C, the lanthanum equilibrium content in metal increases from 0.2 ppm in the region of lanthanum oxide concentration of 1 – 3 % to 12 ppm in the region of increased concentration of lanthanum oxide to 4 – 7 %. In diagrams of chemical composition of slag containing 56 – 61 % CaO, 12 – 14 % SiO2 and 4 – 7 % La2O3 , the lanthanum content in metal at level of 7 – 12 ppm is ensured in temperature range from 1550 to 1650 °C. Therefore, there can be confirmed a decisive role of slag basicity, concentration of lanthanum oxide and temperature factor in development of lanthanum reduction from slags of the studied oxide system by aluminum dissolved in metal.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>лантан</kwd><kwd>металл</kwd><kwd>шлак</kwd><kwd>планирование эксперимента</kwd><kwd>термодинамическое моделирование</kwd><kwd>диаграммы состав – свойство</kwd></kwd-group><kwd-group xml:lang="en"><kwd>lanthanum</kwd><kwd>metal</kwd><kwd>slag</kwd><kwd>experimental planning</kwd><kwd>thermodynamic modeling</kwd><kwd>composition-property diagrams</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Работа выполнена при поддержке гранта РФФИ № 19-08-00825</funding-statement><funding-statement xml:lang="en">The work was financially supported by the Russian Foundation for Basic Research, grant N-08 19-08-00825.</funding-statement></funding-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Смирнов Л.А., Ровнушкин В.А., Орыщенко А.С., Калинин Г.Ю., Милюц В.Г. 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