vguitВестник Воронежского государственного университета инженерных технологийProceedings of the Voronezh State University of Engineering Technologies2226-910X2310-1202VSUET10.20914/2310-1202-2022-3-177-182vguit-3142Research ArticleХимическая технологияFundamental and Applied chemistry, chemical technologyРазработка подходов к созданию технологии извлечения «невидимого» золота из руд месторождения Сухое (Приморье)Development of approaches to the creation of technology for extracting "invisible" gold from the ores of the Sukhoe deposit (Primorye)https://orcid.org/0000-0001-7206-356XМолчановВ. П.MolchanovV. P.

к.г.-м.н., лаборатория нелинейной металлогении, Проспект 100-летия Владивостоку, 159, г. Владивосток, 690022, Россия

Cand. Sci. (Geol.-Min.), laboratory of non-linear metallogeny, 159, Prospekt 100- letiya Vladivostoka, Vladivostok, 690022, Russia

vpmol@mail.ruДальневосточный геологический институт Дальневосточного отделения Российской академии наукРоссияFar East Geological Institute of the far Eastern branch of the Russian Academy of SciencesRussian Federation202224082022843177182Copyright © Молчанов В.П., 20232023Молчанов В.П.Molchanov V.P.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://www.vestnik-vsuet.ru/vguit/article/view/3142

На юге Дальнего Востока выявлено крупное месторождение золота Сухое, где благородный металл находится в рассеянной форме, присутствуя в виде микроскопических частиц, либо входя в структуру сульфидных минералов. Выяснено, что «невидимая» (нано) форма нахождения золота преимущественно связана с пиритом и арсенопиритом. Для разработки технологии извлечения полезного компонента решающее значение имеет полнота и удобство вскрытия каменного материала с переводом всех компонентов в раствор. В статье приведены результаты исследования возможности подготовки проб минерального сырья для разложения путем термической обработки образцов смесью гидродифторида NH4HF2 и сульфата аммония (NH4)2SO4. На основании сравнительного анализа показано, что при использовании смеси гидродифторида с сульфатом аммония удаётся более полно вскрывать минеральное сырьё по сравнению с использованием только гидродифторида аммония. Смесь NH4HF2 с (NH4)2SO4 рекомендована в качестве нового перспективного реагента для разложения руд с «невидимым» золотом.

In the south of the Far East, a large deposit of Sukhoe gold has been identified, where the noble metal is in a dispersed form, being present in the form of microscopic particles, or entering the structure of sulfide minerals. It was found out that the «invisible» (nano) form of finding gold is mainly associated with pyrite and arsenopyrite. To develop a technology for extracting a useful component, the completeness and convenience of opening the stone material with the transfer of all components into a solution is crucial. The article presents the results of a study of the possibility of preparing samples of mineral raw materials for the analytical determination of the elemental composition by thermal treatment of samples with a mixture of ammonium hydrodifluoride NH4HF2 and ammonium sulfate (NH4)2SO4. Based on a comparative analysis, it was shown that when using a mixture of ammonium hydrodifluoride with ammonium sulfate, it is possible to more fully open the mineral raw materials compared to using only ammonium hydrodifluoride. A mixture of NH4HF2 with (NH4)2SO4 is recommended as a new promising reagent for the decomposition of ores with "invisible" gold.

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The authors declare that there are no conflicts of interest present.