Academician Yushkin Institute of Geology, Komi Science Center, Ural Branch, Russian Academy of Sciences, Syktyvkar, Russia:
O. B. Kotova, Head of Laboratory, Doctor of Geological and Mineralogical Sciences, kotova@geo.komisc.ru

I. N. Razmyslov, Junior Researcher

Fedorovsky All-Russian Research Institute of Mineral Resources, Moscow, Russia:
E. G. Ozhogina, Head of Department, Doctor of Geological and Mineralogical Sciences

Institute of Nonmetallic Minerals, Southwest University of Science and Technology, Mianyang, China:

Shieng San, Professor, Doctor of Natural Sciences

Technological mineralogy constitutes a significant part in the concept of integrated development of solid minerals resources. Aiming to evolve Academician Vaisberg’s ideas, the authors undertook assaying of Upper Shchugor bauxites described with the complex mineral composition, texture and structure, as well as with the high content of particulates. For the fruitful development of bauxites, it is required to implement the in-depth analysis using modern mineralogical research methods toward complete processing of mineral substance, extending the list of recoverable useful components and products with new properties, efficient waste management and optimization of process flow charts. Russian bauxite resources are concentrated in the Middle and South Timan. The lack of high-quality bauxites in Russia justifies the heightened attention given to the rebellious Timan bauxites which possess a complex material constitution. The ore-forming mineral and minerals of commercial relevance are assayed. The Upper Shchugor bauxites is the complex ore which features an increased content of rare earth elements and a variable content of iron oxides (0.6–47 %). The ore is composed of bauxite of three types: low-, medium- and high-ferruginous. The interphase boundary interactions in bauxite as a composite material, the composition and distribution of rare metal impurities are identified. The promising trends of bauxite processing technology with regard to the structural features of the material are discussed.

The authors express their gratitude to the Analyst and Candidate Geological and Mineralogical Sciences Yu. S. Simakova and to the Geonauka Shared Use Center for the help in the research implementation.
The study was supported by the Russian Science Foundation, Project No. 21-47-00019, and by the Natural Science Foundation of China (NSFC), Project No. 42061134018.

1. Vaisberg L. А., Ustinov I. D. Introduction to mineral separation technology. Saint-Petersburg : Russkaya kollektsiya, 2019. 168 p.
2. Vaisberg L. А., Kononov O. V., Ustinov I. D. The basics of geometallurgy. Saint-Petersburg : Russkaya kollektsiya, 2020. 376 p.
3. Ozhogina E. G., Shchiptsov V. V. All-Russian Conference “Role of technological mineralogy in rational subsoil use”. Obogashchenie Rud. 2018. No. 4. pp. 55–56.
4. Pustynnykh E. V., Moiseev S. I., Perestoronin A. V. The Change in the Scheme of ore Dressing Processing Bauxite STBR at the Branch of JSC “SUAL” “UAZ–SUAL”. Zhurnal Sibirskogo federalnogo universiteta. Ser.: Tekhnika i tekhnologii. 2017. No. 10(7). pp. 841–853.
5. Razmyslov I. N., Kotova O. B., Silaev V. I., Rostovtsev V. I., Kiseleva D. V. et al. Microphase Heterogenization of High-Iron Bauxite as a Result of Thermal Radiation. Journal of Mining Science. 2019. Vol. 55, Iss. 5. pp. 811–823.
6. Dubovikov O. A., Yaskelyaynen E. E. Processing of low-quality bauxite feedstock by thermochemistrybayer method. Journal of Mining Institute. 2016. Vol. 221. pp. 668–674.
7. Loginova I. V., Kyrchikov A. V., Lebedev V. A., Ordon S. F. Investigation into the Question of Complex Processing of Bauxites of the Srednetimanskoe Deposit. Russian Journal of Non-Ferrous Metals. 2013. Vol. 54, No. 2. pp. 143–147.
8. Rostovtsev V. I. Theoretical fundamentals and practice of electrochemical and radiation effects application in ore preparation and mineral processing. Vestnik Chitinskogo gosudarstvennogo universiteta. 2010. No. 8(65). pp. 91–99.
9. Kotova O. B., Razmyslov I. N., Kurovics E., Lvovsky A. I., Gömze L. A. Effect of bauxite grain size distribution on beneficiation and improvement of materials. Journal of Silicate Based and Composite Materials. 2020. Vol. 72, No. 4. pp. 140–143.
10. Kotova O. B., Razmyslov I. N., Ibrahim J. E. F. M., Shushkov D. A. Mineral composition of bauxite residue and their surface for innovation materials. Journal of Silicate Based and Composite Materials. 2020. Vol. 72, No. 4. pp. 135–139.
11. Ozhogina E. G., Kotova O. B., Yakushina O. A., Zhukova V. E. On the possibility of secondary use of mining wastes. Environmental Geoscience. 2020. No. 2. pp. 58–63.
12. Gamaletsos P. N., Godelitsas A., Filippidis A., Pontikes Y. The Rare Earth Elements Potential of Greek Bauxite Active Mines in the Light of a Sustainable REE Demand. Journal of Sustainable Metallurgy. 2019. Vol. 5, Iss. 1. pp. 20–47.
13. Klyucharev D. S., Volkova N. M., Comyn M. F. The problems associated with using non-conventional rare-earth minerals. Journal of Geochemical Exploration. 2013. Vol. 133. pp. 138–148.
14. Borra C. R., Mermans J., Blanpain B., Pontikes Y., Binnemans K. et al. Selective recovery of rare earths from bauxite residue by combinationof sulfation, roasting and leaching. Mining Engineering. 2016. Vol. 92. pp. 151–159.
15. Likhnikevich E. G., Kurkov A. V., Anufrieva S. I., Rogozhin A. A. Hydrometallurgical processes of selective mineral liberation. Tsvetnye Metally. 2020. No. 3. pp. 27–31. DOI: 10.17580/tsm.2020.03.03
16. Klyucharev D. S. Rare earths contained in the Komi Republic’s bauxites. Geology and Mineral Resources in the European Russian Northeast : Proceedings of XVII Geological Convention of Komi Republic. Syktyvkar : IG Komi NTs UrO RAN, 2019. Vol. III. pp. 189–192.
17. Mordberg L. E., Stanley C. J., Germann K. Mineralogy and geochemistry of trace elements in bauxites: The Devonian Schugorsk deposit, Russia. Mineralogical Magazine. 2001. Vol. 65, Iss. 1. pp. 81–101.