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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">10.17073/0021-3438-2022-2-16-24</article-id><article-id custom-type="elpub" pub-id-type="custom">cvmet-1353</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>ПРИМЕНЕНИЕ ЖИДКОСТНОЙ ЭКСТРАКЦИИ ДЛЯ ОЧИСТКИ ОТ ПРИМЕСЕЙ РАСТВОРОВ НИКЕЛЕВОГО ПРОИЗВОДСТВА АО «КОЛЬСКАЯ ГМК»</article-title><trans-title-group xml:lang="en"><trans-title>Using liquid extraction to clean JSC «Kola MMC» nickel production solutions from impurities</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>Дьякова</surname><given-names>Л. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Dyakova</surname><given-names>L. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Дьякова Л.В. – канд. техн. наук, ст. науч. сотрудник</p><p>184209, Мурманская обл., г. Апатиты, Академгородок, 26а</p></bio><bio xml:lang="en"><p>Dyakova L.V. – Cand. Sci. (Eng.), Senior researcher </p><p>184209, Murmansk region, Apatity, Akademgorodok, 26a</p></bio><email xlink:type="simple">l.diakova@ksc.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>Касиков</surname><given-names>А. Г.</given-names></name><name name-style="western" xml:lang="en"><surname>Kasikov</surname><given-names>A. G.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Касиков А.Г. – канд. хим. наук, зав. лабораторией разработки и внедрения процессов химической технологии184209, Мурманская обл., г. Апатиты, Академгородок, 26а</p></bio><bio xml:lang="en"><p>Kasikov A.G. – Cand. Sci. (Chem.), Head of the laboratory «Development and implementation of chemical technology processes»;  Associate professor of the Department of chemistry and building materials science</p><p>184209,  Murmansk region, Apatity, Akademgorodok, 26a</p></bio><email xlink:type="simple">a.kasikov@ksc.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>Железнова</surname><given-names>М. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Jeleznova</surname><given-names>M. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Железнова М.В. – магистрант </p></bio><bio xml:lang="en"><p>Jeleznova M.V. – Master’s student</p></bio><email xlink:type="simple">mari.jeleznova@mail.ru</email><xref ref-type="aff" rid="aff-3"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Институт химии и технологии редких элементов и  минерального сырья им. И.В. Тананаева Кольского научного центра Российской академии наук (ИХТРЭМС КНЦ РАН)</institution><country>Россия</country></aff><aff xml:lang="en"><institution>I.V. Tananaev Institute of Chemistry and Technology of Rare Elements and Mineral Raw Materials  of Kola Scientific Center of RAS (IST KSC RAS)</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Институт химии и технологии редких элементов и  минерального сырья им. И.В. Тананаева Кольского научного центра Российской академии наук (ИХТРЭМС КНЦ РАН); Апатитский филиал Мурманского государственного технического университета (МГТУ)</institution><country>Россия</country></aff><aff xml:lang="en"><institution>I.V. Tananaev Institute of Chemistry and Technology of Rare Elements and Mineral Raw Materials  of Kola Scientific Center of RAS (IST KSC RAS);  Apatity Branch of the Murmansk State Technical University</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-3"><aff xml:lang="ru"><institution>Апатитский филиал Мурманского государственного технического университета (МГТУ)</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Apatity Branch of the Murmansk State Technical University</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2022</year></pub-date><pub-date pub-type="epub"><day>14</day><month>04</month><year>2022</year></pub-date><volume>28</volume><issue>2</issue><fpage>16</fpage><lpage>24</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Дьякова Л.В., Касиков А.Г., Железнова М.В., 2022</copyright-statement><copyright-year>2022</copyright-year><copyright-holder xml:lang="ru">Дьякова Л.В., Касиков А.Г., Железнова М.В.</copyright-holder><copyright-holder xml:lang="en">Dyakova L.V., Kasikov A.G., Jeleznova M.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/1353">https://cvmet.misis.ru/jour/article/view/1353</self-uri><abstract><p>Аннотация: Проведены исследования экстракционного извлечения примесей Ca(II), Mg(II) и B(III) из растворов никелевого производства АО «Кольская ГМК». В качестве экстрагентов использовали ди-2-этилгексилфосфорную кислоту (Д2ЭГФК), ди-(2,4,4-триметилпентил)фосфиновую кислоту (Cyanex 272), триалкиламин (ТАА), трибутилфосфат (ТБФ), алифатические спирты: октанол-1, 2-этилгексанол и побочный продукт его производства – тяжелый продукт ректификации 2-этилгексанола (ТПРД). Для оценки влияния условий извлечения примесей из растворов проведены лабораторные исследования влияния кислотности водной фазы, концентрации экстрагентов, состава органических смесей на их экстракционную способность. По результатам работы определены оптимальные концентрации индивидуальных экстрагентов Д2ЭГФК и Cyanex 272 (по 20 об.%) в растворителе Escaid 100 и состав смеси 15 об.% Д2ЭГФК + 5 об.% Cyanex 272 при извлечении Ca(II) и Mg(II). Индивидуальная Д2ЭГФК преимущественно экстрагирует кальций (II): извлечение 62 % Са(II) и 15 % Mg(II), а Cyanex 272 – магний (II): извлечение 59 % Mg(II) и 20 % Са(II). Показано, что экстракционная смесь обладает более высокими показателями, чем индивидуальные экстрагенты, для извлечения Са(II) и Mg(II) из никелевых растворов в области значений pH = 3,0÷3,5, при которых соэкстракция Ni(II) незначительна. С ростом величины рН извлечение Са(II) снижается вследствие возрастающей экстракции никеля и вытеснения им кальция из органической фазы. Установлено, что высокую экстракционную способность по отношению к B(III) проявляют смесь 40 % ТАА + 60 % 2-октанон и ТПРД: степень извлечения бора составляет 60,7 и 74,5 % соответственно. Представлены результаты экстракционной очистки никелевого электролита АО «Кольская ГМК» экстракционной смесью в Ni-форме для исключения корректировки pH на каждой ступени процесса. По результатам выполненных исследований рекомендована технологическая схема получения чистых растворов NiSO4 с остаточным суммарным содержанием В(III), Cа(II), Mg(II) и Cl– £ 0,010 г/дм3 .</p></abstract><trans-abstract xml:lang="en"><p>Studies of the extractive recovery of Ca(II), Mg(II) и B(III) impurities from nickel production solutions at JSC «Kola Mining and Smelting Company» were conducted. As extraction agents, we used di-(2-ethylhexyl)phosphoric acid (D2EHPA), di-(2,4,4-trime-thylpentyl)phosphinic acid (Cyanex 272), trialkylamine (TAA), tributyl phosphate (TBP), aliphatic alcohols: octanol-1, 2-ethylhexanol and a by-product of its production – heavy product of 2-ethylhexanol distillation (TPRD). In order to assess the effect of conditions used to extract impurities from solutions, laboratory studies on the effect of aqueous phase acidity, extraction agent concentration, composition of organic impurities on their extractability were conducted. According to the research results, it was found that the optimal concentration of individual extraction agents is 20 vol.% each in the Escaid 100 solvent, and the mixture composition is 15 vol.% D2EHPA + 5 vol.% Cyanex 272 at Ca(II) and Mg(II) extraction. Individual D2EHPA predominantly extracts calcium (II): extraction of 62 % Ca(II) and 15 % Mg(II). When using Cyanex 272, the extraction of magnesium (II) predominates: extraction of 59 % Mg(II) and 20 % Ca(II). It was found that the extraction mixture has higher performance than individual extraction agents for Ca(II) and Mg(II) extraction from nickel solutions in the pH range of 3.0÷3.5, at which Ni(II) coextraction is negligible. With increasing pH values, Ca(II) extraction decreases due to the increasing extraction of nickel and the displacement of calcium by it from the organic phase. It was established that a mixture of 40 % TAA + + 60 % 2-octanone and heavy product of 2-ethylhexanol distillation exhibits high extraction ability with respect to B(III): the degree of boron extraction is 60.7 and 74.5 %, respectively. The paper provides the results of the extraction purification of the nickel electrolyte from JSC «Kola Mining and Smelting Company» with an extraction mixture in the Ni-form to exclude pH adjustment at each stage of the process. Based on the results of the studies conducted, a flowchart is recommended for obtaining pure NiSO4 solutions with a residual total B(III), Ca(II), Mg(II) and Cl– content of £0.010 g/dm3 .</p></trans-abstract><kwd-group xml:lang="ru"><kwd>сульфатно-хлоридный раствор</kwd><kwd>сульфат никеля</kwd><kwd>примеси</kwd><kwd>католит</kwd><kwd>экстракция</kwd><kwd>фосфорорганические кислоты</kwd><kwd>третичный амин</kwd><kwd>алифатические спирты</kwd></kwd-group><kwd-group xml:lang="en"><kwd>sulfate-chloride solution</kwd><kwd>nickel sulfate</kwd><kwd>impurities</kwd><kwd>catholyte</kwd><kwd>extraction</kwd><kwd>organophosphorus acids</kwd><kwd>tertiary amine</kwd><kwd>aliphatic alcohols</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">Корнеев С.И. Никель и электромобиль — совместные проекты. Цветные металлы. 2018. No. 7. 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