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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">10.17073/0021-3438-2024-2-5-15</article-id><article-id custom-type="elpub" pub-id-type="custom">cvmet-1609</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>Обогащение руд цветных металлов</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>Mineral Processing of Non-Ferrous Metals</subject></subj-group></article-categories><title-group><article-title>Совместное применение жидкого стекла и полисахаридов при флотации оталькованных медно-никелевых руд</article-title><trans-title-group xml:lang="en"><trans-title>Joint use of sodium silicate and polysaccharides in the flotation of talcose copper-nickel ores</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-7955-5273</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Лавриненко</surname><given-names>А. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Lavrinenko</surname><given-names>A. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Анатолий Афанасьевич Лавриненко – д.т.н., гл. науч. сотрудник, зав. лабораторией</p><p>111020, г. Москва, Крюковский тупик, 4</p></bio><bio xml:lang="en"><p>Anatoliy A. Lavrinenko – Dr. Sci. (Eng.), Chief Researcher, Head of Laboratory</p><p>4 Kryukovskiy impasse, Moscow 111020</p></bio><email xlink:type="simple">lavrin_a@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-5980-8472</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Кузнецова</surname><given-names>И. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Kuznetsova</surname><given-names>I. N.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Ирина Николаевна Кузнецова – к.т.н., ст. науч. сотрудник</p><p>111020, г. Москва, Крюковский тупик, 4</p></bio><bio xml:lang="en"><p>Irina N. Kuznetsova – Cand. Sci. (Eng.), Senior Researcher</p><p>4 Kryukovskiy impasse, Moscow 111020</p></bio><email xlink:type="simple">iren-kuznetsova@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-7968-3144</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Гольберг</surname><given-names>Г. Ю.</given-names></name><name name-style="western" xml:lang="en"><surname>Golberg</surname><given-names>G. Yu.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Григорий Юрьевич Гольберг – д.т.н., вед. науч. сотрудник</p><p>111020, г. Москва, Крюковский тупик, 4</p></bio><bio xml:lang="en"><p>Grigoriy Yu. Golberg – Dr. Sc. (Eng.), Leading Researcher</p><p>4 Kryukovskiy impasse, Moscow 111020</p></bio><email xlink:type="simple">gr_yu_g@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-5655-1747</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Лусинян</surname><given-names>О. Г.</given-names></name><name name-style="western" xml:lang="en"><surname>Lusinyan</surname><given-names>O. G.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Оганес Георгиевич Лусинян – к.т.н., вед. инженер</p><p>111020, г. Москва, Крюковский тупик, 4</p></bio><bio xml:lang="en"><p>Oganes G. Lusinyan – Cand. Sci. (Eng.), Leading Engineer</p><p>4 Kryukovskiy impasse, Moscow 111020</p></bio><email xlink:type="simple">lusinyan.oganes@yandex.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Институт проблем комплексного освоения недр им. академика Н.В. Мельникова Российской академии наук</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Institute of Comprehensive Exploitation of Mineral Resources n.a. Academician N.V. Melnikov of the Russian Academy of Sciences</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2024</year></pub-date><pub-date pub-type="epub"><day>30</day><month>06</month><year>2024</year></pub-date><volume>30</volume><issue>2</issue><fpage>5</fpage><lpage>15</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Лавриненко А.А., Кузнецова И.Н., Гольберг Г.Ю., Лусинян О.Г., 2024</copyright-statement><copyright-year>2024</copyright-year><copyright-holder xml:lang="ru">Лавриненко А.А., Кузнецова И.Н., Гольберг Г.Ю., Лусинян О.Г.</copyright-holder><copyright-holder xml:lang="en">Lavrinenko A.A., Kuznetsova I.N., Golberg G.Y., Lusinyan O.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://cvmet.misis.ru/jour/article/view/1609">https://cvmet.misis.ru/jour/article/view/1609</self-uri><abstract><p>Рассмотрено совместное действие полисахаридов (карбоксиметилированной целлюлозы и карбоксиметилированного крахмала) с жидким стеклом при флотации оталькованной медно-никелевой руды. На основании анализа результатов флотации, оценки гидрофобности и поверхностного заряда минералов показано, что композиция карбоксиметилированных полисахаридов и жидкого стекла гидрофилизирует поверхность талька более эффективно, чем каждый из реагентов по отдельности. При этом одно жидкое стекло почти не депрессирует поверхность талька. Эффективная депрессия флотоактивных силикатов достигается при последовательной подаче полисахарида и жидкого стекла. В этих условиях жидкое стекло вносит существенный вклад в увеличение отрицательного заряда поверхности частиц талька. Эффект проявляется в большей мере для композиции с крахмалом, имеющим более низкую степень замещения по сравнению с целлюлозой. В результате существенно падает извлечение флотоактивных магнийсодержащих силикатов при небольшом снижении извлечения сульфидов. С целью определения особенностей механизма депрессии талька и сульфидных минералов при флотации на основании полученных данных по значениям электрокинетического потенциала и силы отрыва были выполнены расчеты по расширенной теории ДЛФО. Установлено, что для сульфидных минералов потенциальный барьер их взаимодействия с пузырьком воздуха отсутствует при применении любых композиций исследованных депрессоров. Предложен следующий механизм взаимодействия: в случае, если в первую очередь подается жидкое стекло, то гидрофилизация базальной поверхности талька весьма незначительна по причине затруднения закрепления ионов SiO(OH)–; напротив, когда сначала вводится карбоксиметилированный полисахарид, происходит существенная гидрофилизация поверхности талька карбоксильными группами вследствие гидрофобного взаимодействия между соответствующими участками макромолекулы и базальной поверхности талька.</p></abstract><trans-abstract xml:lang="en"><p>The paper considers the combined effect of polysaccharides (carboxymethyl cellulose and carboxymethyl starch) with sodium silicate in the f lotation of talcose copper-nickel ore. The analysis of the f lotation results and the assessment of hydrophobicity and surface charge of minerals showed that the composition of carboxymethylated  polysaccharides  and  sodium  silicate  hydrophilizes  the talc surface more effectively than each of the reagents separately. Moreover, sodium silicate alone hardly depresses the talc surface at all. The depression of f lotation-active silicates is effective when polysaccharide and sodium silicate are sequentially supplied. Under these conditions, sodium silicate makes a significant contribution to increasing the negative charge on the talc particles surface. The effect is more pronounced for compositions with starch, characterized by a lower degree of substitution compared to cellulose. It results in a significantly reduced recovery of f lotation-active magnesium-containing silicates and a slight decrease in sulfide recovery. To determine the features of the mechanism of talc and sulfide minerals depression in f lotation, we performed calculations using the extended DLVO theory based on the obtained values of the zeta potential and force of detachment. We established that sulfide minerals have no potential barrier preventing their interaction with an air bubble, regardless of the compositions of the studied depressants used. We propose the following interaction mechanism: when sodium silicate is supplied first, the talc basal surface is very insignificantly hydrophilized as SiO(OH)– ions are not easy to fix. On the contrary, when the carboxymethylated polysaccharide is supplied first, significant hydrophilization of the talc surface with carboxyl groups occurs due to the hydrophobic interaction between the corresponding regions of the macromolecule and the talc basal surface.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>флотация</kwd><kwd>гидрофобность</kwd><kwd>электрокинетический потенциал</kwd><kwd>тальк</kwd><kwd>жидкое стекло</kwd><kwd>карбоксиметилированная целлюлоза</kwd><kwd>карбоксиметилированный крахмал</kwd><kwd>медно-никелевая руда</kwd></kwd-group><kwd-group xml:lang="en"><kwd>flotation</kwd><kwd>hydrophobicity</kwd><kwd>zeta potential</kwd><kwd>talc</kwd><kwd>sodium silicate</kwd><kwd>carboxymethyl cellulose</kwd><kwd>carboxymethyl starch</kwd><kwd>copper-nickel ore</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">Srdyan M. Bulatovic. 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