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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">cvmet</journal-id><journal-title-group><journal-title xml:lang="ru">Известия вузов. Цветная металлургия</journal-title><trans-title-group xml:lang="en"><trans-title>Izvestiya. Non-Ferrous Metallurgy</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">0021-3438</issn><issn pub-type="epub">2412-8783</issn><publisher><publisher-name>НИТУ МИСИС</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.17073/0021-3438-2021-5-38-49</article-id><article-id custom-type="elpub" pub-id-type="custom">cvmet-1286</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>Металлургия цветных металлов</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>Metallurgy of Non-Ferrous Metals</subject></subj-group></article-categories><title-group><article-title>Переработка мелкодисперсного техногенного сырья производства алюминия с целью извлечения ценных компонентов</article-title><trans-title-group xml:lang="en"><trans-title>Processing of finely dispersed technogenic raw materials for aluminum production in order to extract valuable components</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>Немчинова</surname><given-names>Н. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Nemchinova</surname><given-names>N. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Докт. техн. наук, проф., зав. кафедрой металлургии цветных металлов</p><p>664074, г. Иркутск, ул. Лермонтова, 83</p></bio><bio xml:lang="en"><p>Dr. Sci. (Eng.), prof., head of the Department of non-ferrous metals metallurgy</p><p>664074, Russia, Irkutsk, Lermontova str., 83</p></bio><email xlink:type="simple">ninavn@yandex.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>Бараускас</surname><given-names>А. Э.</given-names></name><name name-style="western" xml:lang="en"><surname>Barauskas</surname><given-names>A. E.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Аспирант кафедры металлургии цветных металлов</p><p>664074, г. Иркутск, ул. Лермонтова, 83</p></bio><bio xml:lang="en"><p>Postgraduate student of the Department of non-ferrous metals metallurgy</p><p>664074, Russia, Irkutsk, Lermontova str., 83</p></bio><email xlink:type="simple">barauskas.alena@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>Тютрин</surname><given-names>А. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Tyutrin</surname><given-names>A. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Канд. техн. наук, доцент кафедры металлургии цветных металлов</p><p>664074, г. Иркутск, ул. Лермонтова, 83</p></bio><bio xml:lang="en"><p>Cand. Sci. (Eng.), associate prof. of the Department of non-ferrous metals metallurgy</p><p>664074, Russia, Irkutsk, Lermontova str., 83</p></bio><email xlink:type="simple">an.tu@inbox.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>Вологин</surname><given-names>В. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Vologin</surname><given-names>V. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Студент кафедры металлургии цветных металлов</p><p>664074, г. Иркутск, ул. Лермонтова, 83</p></bio><bio xml:lang="en"><p>Student, Department of non-ferrous metals metallurgy</p><p>664074, Russia, Irkutsk, Lermontova str., 83</p></bio><email xlink:type="simple">slavavologin99@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Иркутский национальный исследовательский технический университет (ИРНИТУ)</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Irkutsk National Research Technical University</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2021</year></pub-date><pub-date pub-type="epub"><day>28</day><month>10</month><year>2021</year></pub-date><volume>27</volume><issue>5</issue><fpage>38</fpage><lpage>49</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Немчинова Н.В., Бараускас А.Э., Тютрин А.А., Вологин В.С., 2021</copyright-statement><copyright-year>2021</copyright-year><copyright-holder xml:lang="ru">Немчинова Н.В., Бараускас А.Э., Тютрин А.А., Вологин В.С.</copyright-holder><copyright-holder xml:lang="en">Nemchinova N.V., Barauskas A.E., Tyutrin A.A., Vologin V.S.</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://cvmet.misis.ru/jour/article/view/1286">https://cvmet.misis.ru/jour/article/view/1286</self-uri><abstract><p>Представлены результаты экспериментальных работ по гидрометаллургической переработке мелкодисперсного техногенного сырья производства первичного алюминия в электролизерах с самообжигающимися анодами (на примере Иркутского алюминиевого завода) – лежалого шлама. Составляющими данного шлама являются пыль электрофильтров (79,7 %), шлам «мокрой» газоочистки (4,4 %) и хвосты флотации угольной пены (15,8 %). Согласно проведенному гранулометрическому анализу, частицы пробы лежалого шлама имеют крупность –50 мкм. По результатам анализа химического состава пробы шлама, основными компонентами в нем являются углерод, криолит, хиолит с незначительным количеством других соединений (корунда, ральстонита, сподумена, флюорита). Эксперименты по выщелачиванию фтора проводились раствором 2 %-ного едкого натра при числе оборотов мешалки ~1020 об/мин. Методом математического планирования трехфакторного эксперимента установлено, что для достижения максимальной концентрации фтора в растворе (15,844 г/дм3) оптимальными параметрами щелочного выщелачивания фтора являются температура 90 °C, отношение жидкого к твердому 9 : 1 и продолжительность90 мин. Получено уравнение многомерного полинома процесса щелочного выщелачивания фтора из лежалого шлама. Из фторсодержащих растворов был получен криолит (по реакции взаимодействия фторида натрия с бикарбонатом натрия и алюминатным раствором), что подтверждено данными рентгенофазового анализа.</p></abstract><trans-abstract xml:lang="en"><p>The paper provides the results of experiments on the hydrometallurgical processing of finely dispersed technogenic raw materials for primary aluminum production in Soderberg cells (case study of the Irkutsk Aluminum Smelter) – aged sludge. The components of this sludge are dust from electrostatic precipitators (79.7 %), wet gas cleaning sludge (4.4 %) and coal froth flotation tailings (15.8 %). According to the grain-size analysis carried out, aged sludge sample particles have a size of –50 μm. According to the chemical composition analysis of the sludge sample, main components in it are carbon, cryolite, chiolite with a small amount of other compounds (corundum, ralstonite, spodumene, fluorite). Fluorine leaching experiments were carried out with a 2 % sodium hydroxide solution at a stirrer speed of ~1020 rpm. Using the mathematical planning of a three-factor experiment, it was found that the maximum concentration of fluorine in the solution (15.844 g/dm3) is achieved with the following optimal parameters of fluorine alkaline leaching: temperature of 90 °C, liquid-to-solid ratio of 9 : 1, and time of 90 min. The multidimensional polynomial equation was obtained for fluorine alkaline leaching from aged sludge. Cryolite was obtained from fluorine-containing solutions (by the reaction of sodium fluoride interaction with sodium bicarbonate and an aluminate solution), which was confirmed by X-ray phase analysis data.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>производство первичного алюминия</kwd><kwd>техногенное сырье</kwd><kwd>шлам</kwd><kwd>выщелачивание фтора</kwd><kwd>параметры выщелачивания</kwd><kwd>криолит</kwd></kwd-group><kwd-group xml:lang="en"><kwd>primary aluminum production</kwd><kwd>technogenic raw materials</kwd><kwd>sludge</kwd><kwd>fluorine leaching</kwd><kwd>leaching parameters</kwd><kwd>cryolite</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Исследование выполнено при финансовой поддержке РФФИ в рамках научного проекта № 20-38-90212.</funding-statement><funding-statement xml:lang="en">The reported study was funded by RFBR, project number 20-38-90212.</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">Grjotheim K., Kvande H. 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