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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">vguit</journal-id><journal-title-group><journal-title xml:lang="ru">Вестник Воронежского государственного университета инженерных технологий</journal-title><trans-title-group xml:lang="en"><trans-title>Proceedings of the Voronezh State University of Engineering Technologies</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2226-910X</issn><issn pub-type="epub">2310-1202</issn><publisher><publisher-name>VSUET</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.20914/2310-1202-2021-1-303-308</article-id><article-id custom-type="elpub" pub-id-type="custom">vguit-2714</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>Химическая технология</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>Fundamental and Applied chemistry, chemical technology</subject></subj-group></article-categories><title-group><article-title>Дисперсный наполнитель на основе синтетического карбоната кальция – требования к качеству применения</article-title><trans-title-group xml:lang="en"><trans-title>Dispersed filler based on synthetic calcium carbonate – requirements for applications quality</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-6031-0786</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Натарова</surname><given-names>Е. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Natarova</surname><given-names>E. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>ассистент, кафедра фармацевтической химии и фармацевтической технологии, ул. Студенческая, 10, г. Воронеж, 394036, Россия</p></bio><bio xml:lang="en"><p>assistant, pharmaceutical chemistry and pharmaceutical technology department, Studencheskaya st., 10, Voronezh, 394036, Russia</p></bio><email xlink:type="simple">natarovaekaterina@ya.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/0000-0001-5700-3841</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Нечёсова</surname><given-names>Ю. М.</given-names></name><name name-style="western" xml:lang="en"><surname>Nehcesova</surname><given-names>Y. M.</given-names></name></name-alternatives><bio xml:lang="ru"><p>к.т.н., кафедра технологии органических соединений, переработки полимеров и техносферной безопасности, пр-т Революции, 19, г. Воронеж, 394036, Россия</p></bio><bio xml:lang="en"><p>Dr. Sci. (Engin.), organic compounds technology, polymer processing and technosphere safety department, Revolution Av., 19 Voronezh, 394036, Russia</p></bio><email xlink:type="simple">malyavina.yulya@ya.ru</email><xref ref-type="aff" rid="aff-2"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Воронежский государственный медицинский университет им. Н.Н. Бурденко</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Voronezh State Medical University named after N.N. Burdenko</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Воронежский государственный университет инженерных технологий</institution><country>Russian Federation</country></aff><aff xml:lang="en"><institution>Voronezh State University of Engineering Technologies</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2021</year></pub-date><pub-date pub-type="epub"><day>08</day><month>04</month><year>2021</year></pub-date><volume>83</volume><issue>1</issue><fpage>303</fpage><lpage>308</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Натарова Е.С., Нечёсова Ю.М., 2021</copyright-statement><copyright-year>2021</copyright-year><copyright-holder xml:lang="ru">Натарова Е.С., Нечёсова Ю.М.</copyright-holder><copyright-holder xml:lang="en">Natarova E.S., Nehcesova Y.M.</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://www.vestnik-vsuet.ru/vguit/article/view/2714">https://www.vestnik-vsuet.ru/vguit/article/view/2714</self-uri><abstract><p>Ведение наполнителей в различные материалы способствует улучшению его технологических, физико-механических свойств, приводит к снижению их стоимости. Основными областями применения природного и синтетического карбоната кальция в качестве высокодисперсных наполнителей являются: строительная отрасль, производство портландцемента, минеральных удобрений, стекла, бумаги, полимерных композиционных материалов, лакокрасочных материалов, резин. Перспективным направлением является использование в качестве наполнителей побочных продуктов производств, например, конверсионного карбоната кальция – отхода производства сложного минерального удобрения – нитроаммофоски. Однако, его использование в вышеперечисленных областях ограничено содержанием водорастовримых азотсодержаших примесей, примесей тяжелых металлов, карбоната стронция, фосфатов и др. Проведен анализ научно-технической и патентной литературы по способам очистки конверсионного карбоната кальция. Данные способы основаны на извлечении примесей из исходного продукта получения карбоната кальция – плава тетрагидрата нитрата кальция осаждением различными реагентами с последующим выделением нерастворимого осадка (примесей) и переработкой очищенного плава в карбонат кальция и нитроаммофоску. Предложен способ извлечения кислотонерастворимых железосодержащих примесей из исходного плава нитрата кальция с целью получения более чистого побочного продукта – конверсионного карбоната кальция, что позволит расширить области его применения. Эффективным способом является разбавление исходного плава нитрата кальция 60 %-ным раствором аммиачной селитры до содержания кальция 12-13% с последующим выделением кислотонерастворимого осадка в вакуум-фильтре, конверсией очищенного раствора нитрата кальция карбонатом аммония и разделением образовавшейся суспензии в барабанном фильтре. Описанным способом можно уменьшить количество железосодержащиx примесей более чем на 50%.</p></abstract><trans-abstract xml:lang="en"><p>The introduction of fillers into various materials improves its technological, physical and mechanical properties, and leads to a decrease in cost. The main areas of application of natural and synthetic calcium carbonate as highly dispersed fillers are: the construction industry, the production of Portland cement, mineral fertilizers, glass, paper, polymer composite materials, paints and varnishes, and rubbers. A promising direction at present is the use of production by-products as fillers, for example, conversion calcium carbonate - a waste product from the production of a complex mineral fertilizer - nitroammophoska. However, its use in the above areas is limited by the content of water-soluble nitrogen-containing impurities, impurities of heavy metals, strontium carbonate, phosphates, etc. The analysis of scientific, technical and patent literature on methods of purification of conversion calcium carbonate has been carried out. These methods are based on the extraction of impurities from the initial product of calcium carbonate production - a melt of calcium nitrate tetrahydrate by precipitation with various reagents, followed by the isolation of an insoluble precipitate (impurities) and processing of the purified melt into calcium carbonate and nitroammofoska. A method is proposed for the extraction of acid-tonic-soluble iron-containing impurities from the initial calcium nitrate melt in order to obtain a cleaner by-product - conversion calcium carbonate, which will expand the scope of its application. An effective method is to dilute the initial calcium nitrate melt with a 60% solution of ammonium nitrate to a calcium content of 12-13%, followed by the isolation of an acid-insoluble precipitate in a vacuum filter, conversion of the purified calcium nitrate solution with ammonium carbonate and separation of the resulting suspension in a drum filter. The described method can reduce the amount of iron-containing impurities by more than 50%.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>карбонат кальция</kwd><kwd>нитрат кальция</kwd><kwd>нитроаммофоска</kwd><kwd>очистка от примесей</kwd><kwd>наполнители</kwd></kwd-group><kwd-group xml:lang="en"><kwd>calcium carbonate</kwd><kwd>calcium nitrate</kwd><kwd>nitroammophoska</kwd><kwd>purification from impurities</kwd><kwd>fillers</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">Тарчигина Н.Ф., Боровицкая Н.И. 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