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    <journal-meta>
      <journal-id journal-id-type="issn">2411-3336</journal-id>
      <journal-id journal-id-type="eissn">2541-9404</journal-id>
      <journal-title-group>
        <journal-title xml:lang="ru">Записки Горного института</journal-title>
        <journal-title xml:lang="en">Journal of Mining Institute</journal-title>
      </journal-title-group>
      <publisher>
        <publisher-name xml:lang="ru">Санкт-Петербургский горный университет императрицы Екатерины ΙΙ</publisher-name>
        <publisher-name xml:lang="en">Empress Catherine II Saint Petersburg Mining University</publisher-name>
      </publisher>
    </journal-meta>
    <article-meta>
      <article-id custom-type="edn" pub-id-type="custom">CSNOBO</article-id>
      <article-id custom-type="pmi" pub-id-type="custom">pmi-16264</article-id>
      <article-id pub-id-type="uri">https://pmi.spmi.ru/pmi/article/view/16264</article-id>
      <article-categories>
        <subj-group subj-group-type="section-heading" xml:lang="ru">
          <subject>Геотехнология и инженерная геология</subject>
        </subj-group>
        <subj-group subj-group-type="section-heading" xml:lang="en">
          <subject>Geotechnical Engineering and Engineering Geology</subject>
        </subj-group>
      </article-categories>
      <title-group>
        <article-title xml:lang="en">Specific action of collector from phosphoric acid alkyl esters class in flotation of apatite-nepheline ores</article-title>
        <trans-title-group xml:lang="ru">
          <trans-title>Особенности действия реагента-собирателя из класса алкиловых эфиров фосфорной кислоты при флотации апатит-нефелиновых руд</trans-title>
        </trans-title-group>
      </title-group>
      <contrib-group>
        <contrib contrib-type="author" corresp="yes">
          <name name-style="eastern">
            <surname>Mitrofanova</surname>
            <given-names>Galina V.</given-names>
          </name>
          <name-alternatives>
            <name name-style="eastern" xml:lang="ru">
              <surname>Митрофанова</surname>
              <given-names>Г. В.</given-names>
            </name>
            <name name-style="western" xml:lang="en">
              <surname>Mitrofanova</surname>
              <given-names>Galina V.</given-names>
            </name>
          </name-alternatives>
          <email>g.mitrofanova@ksc.ru</email>
          <contrib-id contrib-id-type="orcid">0000-0003-1230-5381</contrib-id>
          <xref ref-type="aff" rid="aff1"/>
        </contrib>
        <aff-alternatives id="aff1">
          <aff>
            <institution xml:lang="ru">Горный институт КНЦ РАН (Апатиты, Россия)</institution>
          </aff>
          <aff>
            <institution xml:lang="en">Mining Institute, KSC RAS (Apatity, Russia)</institution>
          </aff>
        </aff-alternatives>
        <contrib contrib-type="author">
          <name name-style="eastern">
            <surname>Chernousenko</surname>
            <given-names>Elena V.</given-names>
          </name>
          <name-alternatives>
            <name name-style="eastern" xml:lang="ru">
              <surname>Черноусенко</surname>
              <given-names>Е. В.</given-names>
            </name>
            <name name-style="western" xml:lang="en">
              <surname>Chernousenko</surname>
              <given-names>Elena V.</given-names>
            </name>
          </name-alternatives>
          <email>g.mitrofanova@ksc.ru</email>
          <contrib-id contrib-id-type="orcid">0000-0003-4266-9418</contrib-id>
          <xref ref-type="aff" rid="aff2"/>
        </contrib>
        <aff-alternatives id="aff2">
          <aff>
            <institution xml:lang="ru">Горный институт КНЦ РАН (Апатиты, Россия)</institution>
          </aff>
          <aff>
            <institution xml:lang="en">Mining Institute, KSC RAS (Apatity, Russia)</institution>
          </aff>
        </aff-alternatives>
        <contrib contrib-type="author">
          <name name-style="eastern">
            <surname>Kompanchenko</surname>
            <given-names>Alena A.</given-names>
          </name>
          <name-alternatives>
            <name name-style="eastern" xml:lang="ru">
              <surname>Компанченко</surname>
              <given-names>А. А.</given-names>
            </name>
            <name name-style="western" xml:lang="en">
              <surname>Kompanchenko</surname>
              <given-names>Alena A.</given-names>
            </name>
          </name-alternatives>
          <email>g.mitrofanova@ksc.ru</email>
          <contrib-id contrib-id-type="orcid">0000-0003-1240-7898</contrib-id>
          <xref ref-type="aff" rid="aff3"/>
        </contrib>
        <aff-alternatives id="aff3">
          <aff>
            <institution xml:lang="ru">Геологический институт КНЦ РАН (Апатиты, Россия)</institution>
          </aff>
          <aff>
            <institution xml:lang="en">Geological Institute, KSC RAS (Apatity, Russia)</institution>
          </aff>
        </aff-alternatives>
        <contrib contrib-type="author">
          <name name-style="eastern">
            <surname>Kalugin</surname>
            <given-names>Aleksandr I.</given-names>
          </name>
          <name-alternatives>
            <name name-style="eastern" xml:lang="ru">
              <surname>Калугин</surname>
              <given-names>А. И.</given-names>
            </name>
            <name name-style="western" xml:lang="en">
              <surname>Kalugin</surname>
              <given-names>Aleksandr I.</given-names>
            </name>
          </name-alternatives>
          <email>g.mitrofanova@ksc.ru</email>
          <contrib-id contrib-id-type="orcid">0009-0005-2722-1246</contrib-id>
          <xref ref-type="aff" rid="aff4"/>
        </contrib>
        <aff-alternatives id="aff4">
          <aff>
            <institution xml:lang="ru">Кировский филиал АО «Апатит» (Кировск, Россия)</institution>
          </aff>
          <aff>
            <institution xml:lang="en">Kirovsk Branch of Apatit (Kirovsk, Russia)</institution>
          </aff>
        </aff-alternatives>
      </contrib-group>
      <pub-date pub-type="epub" iso-8601-date="2023-12-29">
        <day>29</day>
        <month>12</month>
        <year>2023</year>
      </pub-date>
      <pub-date date-type="collection">
        <year>2024</year>
      </pub-date>
      <volume>268</volume>
      <fpage>637</fpage>
      <lpage>645</lpage>
      <history>
        <date date-type="received" iso-8601-date="2023-06-21">
          <day>21</day>
          <month>06</month>
          <year>2023</year>
        </date>
        <date date-type="accepted" iso-8601-date="2023-10-25">
          <day>25</day>
          <month>10</month>
          <year>2023</year>
        </date>
        <date date-type="rev-recd" iso-8601-date="2024-08-26">
          <day>26</day>
          <month>08</month>
          <year>2024</year>
        </date>
      </history>
      <permissions>
        <copyright-statement xml:lang="ru">© 2023 Г. В. Митрофанова, Е. В. Черноусенко, А. А. Компанченко, А. И. Калугин</copyright-statement>
        <copyright-statement xml:lang="en">© 2023 Galina V. Mitrofanova, Elena V. Chernousenko, Alena A. Kompanchenko, Aleksandr I. Kalugin</copyright-statement>
        <copyright-year>2023</copyright-year>
        <copyright-holder xml:lang="ru">Г. В. Митрофанова, Е. В. Черноусенко, А. А. Компанченко, А. И. Калугин</copyright-holder>
        <copyright-holder xml:lang="en">Galina V. Mitrofanova, Elena V. Chernousenko, Alena A. Kompanchenko, Aleksandr I. Kalugin</copyright-holder>
        <license license-type="open-access" xlink:href="http://creativecommons.org/licenses/by/4.0" xml:lang="ru">
          <license-p>Эта статья доступна по лицензии Creative Commons Attribution 4.0 International (CC BY 4.0)</license-p>
        </license>
        <license license-type="open-access" xlink:href="http://creativecommons.org/licenses/by/4.0" xml:lang="en">
          <license-p>This article is licensed under a Creative Commons Attribution 4.0 International License (CC BY 4.0)</license-p>
        </license>
      </permissions>
      <self-uri xlink:type="simple" xlink:href="https://pmi.spmi.ru/pmi/article/view/16264">https://pmi.spmi.ru/pmi/article/view/16264</self-uri>
      <abstract xml:lang="ru">
        <p>Рост количества вовлекаемых в переработку апатит-нефелиновых руд сложного минерального состава, увеличение содержания в руде сопутствующих минералов, близких по своей флотируемости к апатиту, определяют необходимость использования высокоселективных собирателей. Методом беспенной флотации проведена сравнительная оценка флотируемости чистых минералов, показана высокая избирательность действия эфиров фосфорной кислоты по отношению к апатиту. На примере флотации пробы апатит-нефелиновой руды с содержанием 17,27 % апатита и 40,18 % нефелина исследовано действие четырех реагентных режимов, отличающихся количеством селективных синтетических реагентов-собирателей. Минералогический анализ измельченной руды показал, что в ней присутствуют две разновидности апатита – крупнозернистый свободный и более мелкий пойкилитовый в виде включений в породообразущих минералах. Свободный апатит хорошо раскрывается и присутствует в качестве раскрытых зерен даже в крупных (+0,16 мм) классах. Пойкилитовый апатит встречается в виде сростков с разными минералами, в основном с нефелином и продуктами его изменения (натролит, шпреуштейн, содалит и др.) и пироксеном. Методом оптической микроскопии показано, что увеличение в составе собирательной смеси доли реагента из класса оксиэтилированных эфиров фосфорной кислоты позволяет повысить качество получаемых апатитовых концентратов за счет снижения в концентратах количества сростков апатита с нефелином и пироксенами. В концентрате, полученном с самым селективным реагентным режимом, сростки характеризуются соотношением в пользу апатита от 50/50 и выше. В концентраты с более низким качеством попали сростки с меньшим содержанием апатита, вплоть до 20/80 и меньше.</p>
      </abstract>
      <abstract xml:lang="en">
        <p>Increasing amount of apatite-nepheline ores with complex mineral composition involved in processing, growing content of the associated minerals in ore which are similar in their floatability to apatite lead to the necessity of using highly selective collectors. Non-frothing flotation method gave a comparative assessment of floatability of pure minerals and demonstrated a high selectivity of the action of phosphoric acid esters in relation to apatite. The effect of four reagent modes differing in the number of selective synthetic collectors was studied using the example of flotation of an apatite-nepheline ore sample containing 17.27 % apatite and 40.18 % nepheline. Mineralogical analysis of crushed ore showed that it contained two apatite varieties – coarse-grained free and finer poikilitic as inclusions in rock-forming minerals. Free apatite opens and occurs as open grains even in coarse-grained (+0.16 mm) grades. Poikilitic apatite occurs as intergrowths with different minerals, mainly with nepheline and its alteration products (natrolite, spreustein, sodalite, etc.), and pyroxene. Optical microscopy demonstrated that a growing share of reagent from the phosphoric acid oxyethylated esters class in the composition of the collector mixture allows improving the quality of the produced apatite concentrates by reducing the number of apatite intergrowths with nepheline and pyroxenes in the concentrates. In the concentrate obtained in the most selective reagent mode, the intergrowths are characterized by a 50/50 and higher ratio in favour of apatite. Concentrates of lower quality comprised intergrowths with lower apatite content, to 20/80 or less.</p>
      </abstract>
      <kwd-group xml:lang="ru">
        <title>Ключевые слова</title>
        <kwd>апатит-нефелиновые руды</kwd>
        <kwd>флотация апатита</kwd>
        <kwd>минералогические исследования</kwd>
        <kwd>эфиры  фосфорной кислоты</kwd>
        <kwd>селективность собирателя</kwd>
        <kwd>флотация сростков</kwd>
      </kwd-group>
      <kwd-group xml:lang="en">
        <title>Keywords</title>
        <kwd>apatite-nepheline ores</kwd>
        <kwd>apatite flotation</kwd>
        <kwd>mineralogical studies</kwd>
        <kwd>phosphoric acid esters</kwd>
        <kwd>collector selectivity</kwd>
        <kwd>intergrowths flotation</kwd>
      </kwd-group>
    </article-meta>
  </front>
  <body/>
  <back>
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