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  <front>
    <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">FSAZKQ</article-id>
      <article-id custom-type="pmi" pub-id-type="custom">pmi-16478</article-id>
      <article-id pub-id-type="uri">https://pmi.spmi.ru/pmi/article/view/16478</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">Assessment of ancylite ore dressability by flotation method</article-title>
        <trans-title-group xml:lang="ru">
          <trans-title>Оценка обогатимости анкилитовой руды флотационным способом</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>Kozlov</surname>
            <given-names>Evgenii N.</given-names>
          </name>
          <name-alternatives>
            <name name-style="eastern" xml:lang="ru">
              <surname>Козлов</surname>
              <given-names>Е. Н.</given-names>
            </name>
            <name name-style="western" xml:lang="en">
              <surname>Kozlov</surname>
              <given-names>Evgenii N.</given-names>
            </name>
          </name-alternatives>
          <email>kozlov_e.n@mail.ru</email>
          <contrib-id contrib-id-type="orcid">0000-0002-7809-4866</contrib-id>
          <xref ref-type="aff" rid="aff2"/>
        </contrib>
        <aff-alternatives id="aff2">
          <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>Fomina</surname>
            <given-names>Ekaterina N.</given-names>
          </name>
          <name-alternatives>
            <name name-style="eastern" xml:lang="ru">
              <surname>Фомина</surname>
              <given-names>Е. Н.</given-names>
            </name>
            <name name-style="western" xml:lang="en">
              <surname>Fomina</surname>
              <given-names>Ekaterina N.</given-names>
            </name>
          </name-alternatives>
          <email>fomina_e.n@mail.ru</email>
          <contrib-id contrib-id-type="orcid">0000-0002-9134-943X</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>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>e.chernousenko@ksc.ru</email>
          <contrib-id contrib-id-type="orcid">0000-0003-4266-9418</contrib-id>
          <xref ref-type="aff" rid="aff4"/>
        </contrib>
        <aff-alternatives id="aff4">
          <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>Chernyavskii</surname>
            <given-names>Aleksei V.</given-names>
          </name>
          <name-alternatives>
            <name name-style="eastern" xml:lang="ru">
              <surname>Чернявский</surname>
              <given-names>А. В.</given-names>
            </name>
            <name name-style="western" xml:lang="en">
              <surname>Chernyavskii</surname>
              <given-names>Aleksei V.</given-names>
            </name>
          </name-alternatives>
          <email>a.chernyavsky@ksc.ru</email>
          <contrib-id contrib-id-type="orcid">0009-0006-9639-5423</contrib-id>
          <xref ref-type="aff" rid="aff5"/>
        </contrib>
        <aff-alternatives id="aff5">
          <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>Dorozhanova</surname>
            <given-names>Natalya O.</given-names>
          </name>
          <name-alternatives>
            <name name-style="eastern" xml:lang="ru">
              <surname>Дорожанова</surname>
              <given-names>Н. О.</given-names>
            </name>
            <name name-style="western" xml:lang="en">
              <surname>Dorozhanova</surname>
              <given-names>Natalya O.</given-names>
            </name>
          </name-alternatives>
          <email>dorozhanova@yandex.ru</email>
          <contrib-id contrib-id-type="orcid">0000-0003-0911-981X</contrib-id>
          <xref ref-type="aff" rid="aff6"/>
        </contrib>
        <aff-alternatives id="aff6">
          <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-group>
      <pub-date pub-type="epub" iso-8601-date="2025-04-02">
        <day>02</day>
        <month>04</month>
        <year>2025</year>
      </pub-date>
      <pub-date date-type="collection">
        <year>2025</year>
      </pub-date>
      <volume>274</volume>
      <fpage>117</fpage>
      <lpage>128</lpage>
      <history>
        <date date-type="received" iso-8601-date="2024-05-03">
          <day>03</day>
          <month>05</month>
          <year>2024</year>
        </date>
        <date date-type="accepted" iso-8601-date="2024-11-07">
          <day>07</day>
          <month>11</month>
          <year>2024</year>
        </date>
        <date date-type="rev-recd" iso-8601-date="2025-08-25">
          <day>25</day>
          <month>08</month>
          <year>2025</year>
        </date>
      </history>
      <permissions>
        <copyright-statement xml:lang="ru">© 2025 Г. В. Митрофанова, Е. Н. Козлов, Е. Н. Фомина, Е. В. Черноусенко, А. В. Чернявский, Н. О. Дорожанова</copyright-statement>
        <copyright-statement xml:lang="en">© 2025 Galina V. Mitrofanova, Evgenii N. Kozlov, Ekaterina N. Fomina, Elena V. Chernousenko, Aleksei V. Chernyavskii, Natalya O. Dorozhanova</copyright-statement>
        <copyright-year>2025</copyright-year>
        <copyright-holder xml:lang="ru">Г. В. Митрофанова, Е. Н. Козлов, Е. Н. Фомина, Е. В. Черноусенко, А. В. Чернявский, Н. О. Дорожанова</copyright-holder>
        <copyright-holder xml:lang="en">Galina V. Mitrofanova, Evgenii N. Kozlov, Ekaterina N. Fomina, Elena V. Chernousenko, Aleksei V. Chernyavskii, Natalya O. Dorozhanova</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/16478">https://pmi.spmi.ru/pmi/article/view/16478</self-uri>
      <abstract xml:lang="ru">
        <p>На протяжении более 50 лет большинство редкоземельных элементов добывается из карбонатитовых месторождений, которые могут содержать различные редкоземельные фазы, но основными извлекаемыми минералами являются бастнезит, монацит и ксенотим. Совершенствованию и разработке схем обогащения руд этих минералов посвящено множество исследований. Однако в некоторых карбонатитовых комплексах месторождения редких земель сложены частично или преимущественно анкилитовыми рудами. Этот тип редкоземельных руд весьма слабо изучен на предмет обогатимости – прежние эксперименты с акилитовыми рудами редки и недостаточно продуктивны. Анкилит – основной концентратор редкоземельных элементов в большинстве карбонатитовых комплексов девонской Кольской щелочной провинции (северо-запад России). Проведена оценка обогатимости флотационным способом анкилитовой руды карбонатитового поля Петяйян-Вара щелочно-ультраосновного комплекса Вуориярви. Комплекс потенциально является одним из наиболее перспективных в Кольском регионе месторождений редких земель, связанных с карбонатитами. Петрографо-минералогическое исследование продемонстрировало присутствие в анкилите обилия включений оксидов железа и барита, что вносит ограничения на физическое разделение этих трех минералов. Исследование петрогеохимического и минералогического состава фракций, образовавшихся при механическом измельчении руд до размерности менее 2,0 мм, показало, что уже на этом этапе подготовки проб происходит обогащение анкилитом (до 19 об.% и более при содержании в руде 15 об.%) наиболее мелкозернистых (менее 0,071 мм) фракций. Во флотационных экспериментах в качестве собирателей были рассмотрены три класса реагентов – жирные кислоты, алкилгидроксамовые кислоты и производные аминокислот. Показана большая эффективность реагента из класса производных аминокислот. Использование такого собирателя в сочетании с депрессором гексаметафосфатом натрия позволило получить в открытом цикле флотационный концентрат с содержанием суммы оксидов редких земель 33,4 мас.% при извлечении 64,7 %.</p>
      </abstract>
      <abstract xml:lang="en">
        <p>For more than 50 years, most rare earth elements were extracted from carbonatite deposits, which can contain different rare earth phases, but the main extracted minerals are bastnaesite, monazite and xenotime. Many studies focused on the improvement and development of dressing circuits for ores of these minerals. However, in some carbonatite complexes, rare earth deposits are composed partly or mainly of ancylite ores. This type of rare earth ores was very poorly studied in terms of dressability – previous experiments with ancylite ores are rare and not productive enough. Ancylite is the main concentrator of rare earth elements in most carbonatite complexes of the Devonian Kola Alkaline Province (northwest Russia). Dressability of ancylite ore from the Petyayan-Vara carbonatite field in the Vuorijärvi alkaline-ultramafic complex was assessed using the flotation method. The complex is one of the most potential rare earth deposits associated with carbonatites in the Kola Region. Petrographic and mineralogical studies demonstrated the occurrence of abundant iron and barite oxide inclusions in ancylite, which imposes restrictions on physical separation of these three minerals. The study of petrogeochemical and mineralogical composition of fractions formed during mechanical grinding of ores to a size less than 2.0 mm showed that even at this stage of sample preparation, the finest-grained fractions (less than 0.071 mm) were enriched in ancylite (to 19 vol.% or more with a content of 15 vol.% in ore). Three classes of reagents were considered as collectors in flotation experiments: fatty acids, alkyl hydroxamic acids, and amino acid derivatives. The reagent from the amino acid derivative class was highly efficient. The use of such a collector in combination with sodium hexametaphosphate depressant made it possible to obtain a flotation concentrate in an open circuit with total rare earth oxides content 33.4 wt.% at 64.7 % extraction.</p>
      </abstract>
      <kwd-group xml:lang="ru">
        <title>Ключевые слова</title>
        <kwd>карбонатиты</kwd>
        <kwd>анкилит</kwd>
        <kwd>редкоземельные руды</kwd>
        <kwd>флотационное разделение карбонатных минералов</kwd>
        <kwd>реагенты-собиратели</kwd>
        <kwd>Вуориярви</kwd>
        <kwd>Кольская щелочная провинция</kwd>
      </kwd-group>
      <kwd-group xml:lang="en">
        <title>Keywords</title>
        <kwd>carbonatites</kwd>
        <kwd>ancylite</kwd>
        <kwd>rare earth ores</kwd>
        <kwd>flotation separation of carbonate minerals</kwd>
        <kwd>collectors</kwd>
        <kwd>Vuorijärvi</kwd>
        <kwd>Kola Alkaline Province</kwd>
      </kwd-group>
      <funding-group>
        <funding-statement xml:lang="ru">Отбор проб анкилитовых руд, их петрографо-минералогическое и геохимическое исследования выполнены при финансовой поддержке проекта Российского научного фонда № 19-77-10039-П. Исследования обогатимости руд проводились в рамках Государственного задания FMEZ-2022-0003 ГоИ КНЦ РАН (Апатиты). Геологические изучение карбонатитов массива Вуориярви осуществлялось в рамках Государственного задания FMEZ-2024-0004 ГИ КНЦ РАН (Апатиты).</funding-statement>
        <funding-statement xml:lang="en">Sampling of ancylite ores, their petrographic, mineralogical and geochemical studies were accomplished with financial support of the Russian Science Foundation Project N 19-77-10039-P. Studies of ore dressability were conducted under the State assignment FMEZ-2022-0003 GoI KSC RAS (Apatity). Geological study of carbonatites of the Vuorijärvi massif was accomplished under the State assignment FMEZ-2024-0004 GoI KSC RAS (Apatity).</funding-statement>
      </funding-group>
    </article-meta>
  </front>
  <body/>
  <back>
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</article>
