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TECHNOLOGIES FOR PRODUCTION AND UTILIZATION OF REM
ArticleName Recovery of rare earth elements in the acidic technologies of eudialyte concentrate
ArticleAuthor Lebedev V. N., Masloboev V. A., Zakharov V. I.
ArticleAuthorData

Institute of the Industrial Ecology Problems of the North of the Kola Science Center of the Russian Academy of Sciences (INEP KSC RAS)

V. N. Lebedev, Senior Researcher, e-mail: Lebed_vn@chemy.kolasc.net.ru

V. A. Masloboev, Director

 

Institute of Chemistry and Technology of Rare Elements and Mineral Raw Materials of the Russian Academy of Sciences Kola Science Center (ICTREMRM KSC RAS).

V. I. Zakharov, Head of Laboratory

Abstract

From solutions after the leaching of eudialyte concentrate by sulphuric acid mostly 20–30% of rare earth elements (REE) of the yttrium group are precipitated along with zirconium (IV) and other impurities in the precipitate of hydrates, from which the zirconium (IV) and niobium (V) is converted in the precipitate of basic sulfates and REE is recovered from a solution by means of oxalic acid. The method of the REE recovery from the calcium-silica sludge by the sodium chloride or calcium nitrate leaching is worked out.The method of the REE separation by solvent extraction from the solution after the hydrochloric acid leaching of eudialyte concentrate by means of the nitrate ions insertion in the chloride solution is proposed. The 5-stage countercurrent solvent extraction and purification process of the REE from the impurities from the solutions of the hydrochloride technology eudialyte is simulated. The possibility of the nitrate ions utilization by means of the solvent extraction of nitric acid from the electrolyte solutions containing hydrochloric acid is showcased.

keywords Rare earth elements (REE) recovery, eudialyte concentrate leaching, sulphuric acid, hydrochloric acid, solvent extraction of REE
References

1. Bykhovskiy L. Z., Tigunov L. P., Zubkov L. B., Kalish E. A., Levchenko E. N., Remizova L. I. Tsirkoniy i gafniy Rossii: sovremennoe sostoyanie, perspektivy osvoeniya i razvitiya mineralno-syrevoy bazy (Russian zirconium and hafnium: current status, prospects of exploration and development of mineral raw material base). Mineralnoe syre. Seriya geologo-ekonomicheskaya – Mineral raw materials. Geoeconomic series. No. 23. 2007.

2. Chizhevskaya S. V., Chekmarev A. M., Povetkina M. V., Panov V. A., Elyutin A. V., Chistov L. B., Yufryakov V. A., Zakharov V. I., Shaderman F. I., Osokin E. D. Tez. dokl. mezhdunar. konf. Redkozemelnye metally: pererabotka syrya, proizvodstvo soedineniy i materialov na ikh osnove (Thesis of a report of International Conference. Rare earth metals: Processing of raw materials, production of compounds and materials on their basis). Krasnoyarsk, 1995. p. 74.

3. Chistov L. B., Okhrimenko V. E., Yufryakov V. A., Butova M. N. Tez. dokl. mezhdunar. simpoziuma “Strategiya ispolzovaniya i razvitiya mineralno-syrevoy bazy redkikh metallov Rossii v XXI v” (Thesis of a report of the International Symposium “Strategy of using and development of Russian mineral raw material base of rare metals in the ХХI century”). Moscow : VIMS, 1998. pp. 366—367.

4. Gerasimovskiy V. I. Geokhimiya redkozemelnykh elementov. Redkozemelnye elementy (Geochemistry of rare earth elements. Rare earth elements). Moscow : Published by AS of USSR, 1959. pp. 29–41.

5. Lebedev V. N., Masloboev V. A., Sergeeva S. D. Ekstraktsionnaya pererabotka evdialitovogo rastvora. Tekhnologiya mineralnogo syrya i svoystva soedineniy redkikh elementov (Extraction processing of the eudialyte solution. Technology of mineral raw materials and properties of rare elements` compounds). Apatity : KSC RAS, 1996. pp. 39–54.

6. Motov D. L., Leshtaeva T. G. Poluchenie dvuokisi tsirkoniya iz evdialitovogo kontsentrata. Khimicheskaya tekhnologiya redkometallnogo syrya (Obtaining of the zirconium dioxide from the eudialyte concentrate. Chemical technology of rare metals` raw materials). Moscow : Leningrad, Nauka, 1966. pp. 16–26.

7. Patent 2183225 RF. Sposob pererabotki evdialitovogo kontsentrata (The way of the eudialyte concentrate processing). Lebedev V. N. Published 10.06.2002. Bulletin No. 16.

8. Lebedev V. N., Rudenko A. V. Khimicheskaya Tekhnologiya – Chemical Engineering. 2002. No.12. pp. 27–30.

9. Mikhaylichenko A. I., Mikhlin E. B., Patrikeev Yu. B. Redkozemelnye metally (Rare earth metals). Moscow : Metallurgiya, 1987. 233 p.

10. Rozen A. M., Reznik A. M., Korovin S. S. et al. Zhurnal prikladnoy khimii – Russian Journal of Applied Chemistry. 1963. Vol. 8, Is. 4. pp. 1003–1010.

11. Apraksin I. A., Korovin S. S., Musorin V. A. et al. Zhurnal fizicheskoy khimii – Russian Journal of Physical Chemistry. 1966. Vol. 40. pp. 1292–1297.

12. Korovin S. S. Izvestiya VUZov. Khimiya i khimicheskaya tekhnologiya – Higher Schools Proceedings. Chemistry and chemical technology. 1968. No. 7. pp. 752–757.

13. Lebedev V. N. Zhurnal prikladnoy khimii – Russian Journal of Applied Chemistry. 2005. Vol. 78, Is. 11. pp. 1806–1808.

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