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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="pmi" pub-id-type="custom">pmi-14316</article-id>
      <article-id pub-id-type="uri">https://pmi.spmi.ru/pmi/article/view/14316</article-id>
      <article-categories>
        <subj-group subj-group-type="section-heading" xml:lang="ru">
          <subject>Геология</subject>
        </subj-group>
        <subj-group subj-group-type="section-heading" xml:lang="en">
          <subject>Geology</subject>
        </subj-group>
      </article-categories>
      <title-group>
        <article-title xml:lang="en">Extraction of molybdenum from poor concentrates and intermediate products</article-title>
        <trans-title-group xml:lang="ru">
          <trans-title>Извлечение молибдена из бедных концентратов и промпродуктов</trans-title>
        </trans-title-group>
      </title-group>
      <contrib-group>
        <contrib contrib-type="author">
          <name name-style="eastern">
            <surname>Graver</surname>
            <given-names>N. S.</given-names>
          </name>
          <name-alternatives>
            <name name-style="eastern" xml:lang="ru">
              <surname>Грейвер</surname>
              <given-names>Н. С.</given-names>
            </name>
            <name name-style="western" xml:lang="en">
              <surname>Graver</surname>
              <given-names>N. S.</given-names>
            </name>
          </name-alternatives>
          <email>pmi@spmi.ru</email>
          <xref ref-type="aff" rid="aff1"/>
        </contrib>
        <aff-alternatives id="aff1">
          <aff>
            <institution xml:lang="ru"> (Россия)</institution>
          </aff>
          <aff>
            <institution xml:lang="en"> (Russia)</institution>
          </aff>
        </aff-alternatives>
        <contrib contrib-type="author" corresp="yes">
          <name name-style="eastern">
            <surname>Bolotina</surname>
            <given-names>S. M.</given-names>
          </name>
          <name-alternatives>
            <name name-style="eastern" xml:lang="ru">
              <surname>Болотина</surname>
              <given-names>С. М.</given-names>
            </name>
            <name name-style="western" xml:lang="en">
              <surname>Bolotina</surname>
              <given-names>S. M.</given-names>
            </name>
          </name-alternatives>
          <email>pmi@spmi.ru</email>
          <xref ref-type="aff" rid="aff2"/>
        </contrib>
        <aff-alternatives id="aff2">
          <aff>
            <institution xml:lang="ru"> (Россия)</institution>
          </aff>
          <aff>
            <institution xml:lang="en"> (Russia)</institution>
          </aff>
        </aff-alternatives>
      </contrib-group>
      <pub-date pub-type="epub" iso-8601-date="1955-11-17">
        <day>17</day>
        <month>11</month>
        <year>1955</year>
      </pub-date>
      <pub-date date-type="collection">
        <year>1955</year>
      </pub-date>
      <volume>31</volume>
      <fpage>282</fpage>
      <lpage>348</lpage>
      <history>
        <date date-type="received" iso-8601-date="1954-07-11">
          <day>11</day>
          <month>07</month>
          <year>1954</year>
        </date>
        <date date-type="accepted" iso-8601-date="1954-09-11">
          <day>11</day>
          <month>09</month>
          <year>1954</year>
        </date>
        <date date-type="rev-recd" iso-8601-date="1955-11-17">
          <day>17</day>
          <month>11</month>
          <year>1955</year>
        </date>
      </history>
      <permissions>
        <copyright-statement>© N. S. Graver, S. M. Bolotina</copyright-statement>
        <copyright-year>1955</copyright-year>
        <copyright-holder xml:lang="ru">Н. С. Грейвер, С. М. Болотина</copyright-holder>
        <copyright-holder xml:lang="en">N. S. Graver, S. M. Bolotina</copyright-holder>
        <license xlink:href="http://creativecommons.org/licenses/by/4.0">
          <license-p>CC BY 4.0</license-p>
        </license>
      </permissions>
      <self-uri xlink:type="simple" xlink:href="https://pmi.spmi.ru/pmi/article/view/14316">https://pmi.spmi.ru/pmi/article/view/14316</self-uri>
      <abstract xml:lang="ru">
        <p>Первые работы по гидрометаллургии молибдена были начаты Ленин­градским горным институтом в 1932 г. и осуществлялись на бедном сырье Тахтарвумчоррского месторождения, чрезвычайно далеком от обычных кондиций. В течение двух последующих лет результаты этих работ были обсуждены и одобрены на проводившихся академиком А. Е. Ферсманом широких совещаниях в г. Кировске и Ленинграде, но практическое использование получили позднее, в связи с проблемой извлечения молибдена, содержащегося в балхашских медных рудах. В октябре 1941 г. на Балхашском заводе был введен в эксплуата­цию цех, предназначенный для передела некондиционных молибденовых продуктов методом, разработанным в Ленинградском горном институте.</p>
      </abstract>
      <abstract xml:lang="en">
        <p>The first works on hydrometallurgy of molybdenum were started by the Leningrad Mining Institute in 1932 and were carried out on poor raw materials of the Takhtarvumchorr deposit, extremely far from the usual conditions. During the next two years the results of these works were discussed and approved at the broad meetings held by Academician A.E. Fersman in Kirovsk and Leningrad, but they were used in practice later, in connection with the problem of extraction of molybdenum contained in the Balkhash copper ores. In October 1941, a shop was put into operation at the Balkhash plant for processing of substandard molybdenum products using a method developed at the Leningrad Mining Institute.</p>
      </abstract>
    </article-meta>
  </front>
  <body/>
  <back>
    <ref-list>
      <ref id="ref1">
        <label>1</label>
        <mixed-citation xml:lang="ru">Bonardi. Notes of the Metallurgy of Wulfenit, Chem. and Met. Eng. 1919, № 6.</mixed-citation>
        <mixed-citation xml:lang="en">Bonardi. Notes of the Metallurgy of Wulfenit, Chem. and Met. Eng. 1919, № 6.</mixed-citation>
      </ref>
    </ref-list>
  </back>
</article>
