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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">10.17073/0021-3438-2021-6-4-11</article-id><article-id custom-type="elpub" pub-id-type="custom">cvmet-1300</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>Вязкость криолитоглиноземных расплавов промышленного состава</article-title><trans-title-group xml:lang="en"><trans-title>Viscosity of conventional cryolite-alumina melts</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>Руденко</surname><given-names>А. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Rudenko</surname><given-names>A. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p> науч. сотрудник </p><p>620066 г. Екатеринбург, ул. Академическая, 20</p></bio><bio xml:lang="en"><p> Researcher</p><p>620066, Ekaterinburg, Akademicheskaya str., 20 </p></bio><email xlink:type="simple">lrizonl@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>Катаев</surname><given-names>А. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Kataev</surname><given-names>A. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p> канд. хим. наук, науч.   </p></bio><bio xml:lang="en"><p> Dr. Sci. (Chem.), Researcher </p></bio><email xlink:type="simple">aleksandr_kataev@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>Ткачева</surname><given-names>О. Ю.</given-names></name><name name-style="western" xml:lang="en"><surname>Tkacheva</surname><given-names>O. Yu.</given-names></name></name-alternatives><bio xml:lang="ru"><p> докт. хим. наук, вед. науч. сотрудник, профессор кафедры технологии электрохимических производств </p><p>620002, г. Екатеринбург, ул. Мира, 19</p></bio><bio xml:lang="en"><p>Dr. Sci. (Chem.), Leading researcher; Professor, Department of electrochemical production technology (EPT)</p><p>(620002,  Ekaterinburg, Mira str., 19</p></bio><email xlink:type="simple">o.tkacheva@ihte.uran.ru</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Зайков</surname><given-names>Ю. П.</given-names></name><name name-style="western" xml:lang="en"><surname>Zaykov</surname><given-names>Yu. P.</given-names></name></name-alternatives><bio xml:lang="ru"><p>докт. хим. наук, науч. руководитель, зав. кафедрой </p></bio><bio xml:lang="en"><p> Dr. Sci. (Chem.), Scientific supervisor </p></bio><email xlink:type="simple">dir@ihte.uran.ru</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Пьяных</surname><given-names>А. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Pyanykh</surname><given-names>A. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p> канд. техн. наук, менеджер отдела математического моделирования и измерений</p><p>660111, г. Красноярск, ул. Пограничников, 37 </p></bio><bio xml:lang="en"><p> Cand. Sci. (Tech.), Manager, Department of mathematical modelling and measurement</p><p>660111, Krasnoyarsk, Pogranichnikov str., 37 </p></bio><email xlink:type="simple">pianykhaa@gmail.com</email><xref ref-type="aff" rid="aff-3"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Архипов</surname><given-names>Г. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Arkhipov</surname><given-names>G. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p> канд. техн. наук, директор проекта «Энергосберегающие конструкции электролизеров»</p></bio><bio xml:lang="en"><p> Cand. Sci. (Tech.), Project Director </p></bio><email xlink:type="simple">Gennadiy.Arkhipov@rusal.com</email><xref ref-type="aff" rid="aff-3"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Институт высокотемпературной электрохимии (ИВТЭ) УрО РАН</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Institute of High Temperature Electrochemistry of the Ural Branch of the Russian Academy of Sciences</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Институт высокотемпературной электрохимии (ИВТЭ) УрО РАН; Уральский федеральный университет (УрФУ) имени первого Президента России Б.Н. Ельцина</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Institute of High Temperature Electrochemistry of the Ural Branch of the Russian Academy of Sciences; Ural Federal University named after the First President of Russia B.N. Yeltsin (UrFU)</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-3"><aff xml:lang="ru"><institution>ООО «Объединенная компания РУСАЛ. Инженерно-технологический центр»</institution><country>Россия</country></aff><aff xml:lang="en"><institution>«RUSAL ETC» LLC</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2021</year></pub-date><pub-date pub-type="epub"><day>10</day><month>12</month><year>2021</year></pub-date><volume>27</volume><issue>6</issue><fpage>4</fpage><lpage>11</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Руденко А.В., Катаев А.А., Ткачева О.Ю., Зайков Ю.П., Пьяных А.А., Архипов Г.В., 2021</copyright-statement><copyright-year>2021</copyright-year><copyright-holder xml:lang="ru">Руденко А.В., Катаев А.А., Ткачева О.Ю., Зайков Ю.П., Пьяных А.А., Архипов Г.В.</copyright-holder><copyright-holder xml:lang="en">Rudenko A.V., Kataev A.A., Tkacheva O.Y., Zaykov Y.P., Pyanykh A.A., Arkhipov G.V.</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/1300">https://cvmet.misis.ru/jour/article/view/1300</self-uri><abstract><p>Проведены исследования вязкости криолитоглиноземных расплавов промышленного состава NaF–AlF3–CaF2–Al2O3 с криолитовым отношением КО = 2,3 в зависимости от содержания CaF2, Al2O3 и температуры. Вязкость образцов криолитоглиноземных электролитов, приготовленных в лабораторных условиях, и образцов электролитов промышленных электролизных ванн измеряли ротационным методом с использованием реометра FRS 1600 («Anton Paar», Австрия). Область ламинарного течения расплава, определенная по зависимости вязкости от скорости сдвига при постоянной температуре, составила 10–15 с–1 для всех исследованных образцов. Измерения температурной зависимости вязкости криолитоглиноземных расплавов проводили при скорости сдвига 12 ± 1 с–1 в температурном интервале от ликвидуса до 1020 °С. Показано, что изменение вязкости всех образцов в исследуемом температурном интервале (50–80 °С) можно описать линейным уравнением.</p><p>Средний температурный коэффициент линейных уравнений, описывающих вязкость криолитоглиноземных электролитов, приготовленных в лабораторных условиях, составил 0,005 мПа·с/°С, что в 2 раза меньше, чем у электролитов промышленных ванн. Таким образом, изменение вязкости электролитов промышленных ванн с повышением температуры – более существенное. Добавки как глинозема, так и фторида кальция повышают вязкость криолитового расплава. Вязкость приготовленных образцов промышленного состава NaF–AlF3–5%CaF2–4%Al2O3 (КО = 2,3) равна 3,11 ± 0,04 мПа·с при рабочей температуре электролиза 960 °С, а вязкость электролитов промышленных ванн с таким же криолитовым отношением выше на 10–15 % и лежит в интервале 3,0–3,7 мПа·с в зависимости от состава.</p></abstract><trans-abstract xml:lang="en"><p>The study covers the viscosity of NaF–AlF3–CaF2–Al2O3 conventional cryolite-alumina melts with a cryolite ratio CR = 2.3 depending on the CaF2, Al2O3 content and temperature. The viscosity of cryolite-alumina electrolyte samples prepared under laboratory conditions and electrolyte samples of industrial electrolytic cells was measured by the rotary method using the FRS 1600 rheometer («Anton Paar», Austria). The laminar flow region of the melt determined according to the dependence of viscosity on shear rate at a constant temperature was 10–15 s–1 for all the studied samples. The temperature dependence of cryolite-alumina melt viscosity was measured at a shear rate of 12 ± 1 s–1 in the temperature range from liquidus to 1020 °C. It was shown that the change in the viscosity of all samples in the investigated temperature range (50–80 °С) can be described by a linear equation. The average temperature coefficient of linear equations describing the viscosity of cryolite-alumina electrolytes prepared in laboratory conditions was 0.005 mPа· s/°С, which is 2 times less compared to industrial cell electrolytes. Thus, the change in the viscosity of industrial cell electrolytes with increasing temperature is more significant. Both alumina and calcium fluoride additives increase the cryolite melt viscosity. The viscosity of samples prepared with the conventional composition NaF–AlF3–5%CaF2–4%Al2O3 (CR = 2.3) is equal to 3.11 ± 0.04 mPа· s at an electrolysis operating temperature of 960 °C, while the viscosity of industrial cell electrolytes with the same cryolite ratio is 10–15 % higher and falls in the range of 3.0–3.7 mPа· s depending on the electrolyte composition.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>вязкость</kwd><kwd>ротационный метод</kwd><kwd>криолитглиноземный расплав</kwd><kwd>глинозем</kwd><kwd>фторид кальция</kwd><kwd>производство алюминия.</kwd></kwd-group><kwd-group xml:lang="en"><kwd>viscosity</kwd><kwd>rotary method</kwd><kwd>cryolite-alumina melt</kwd><kwd>alumina</kwd><kwd>calcium fluoride</kwd><kwd>aluminum production</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">Oye H.A., Mason N., Peterson R.D., Richards N.E. 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