Preview

Fine Chemical Technologies

Advanced search

BEHAVIOR OF RARE-EARTH METALS IN HYDROMETALLURGICAL PROCESSING OF PYROCHLOR-MONAZITE-GOETHITE ORES

https://doi.org/10.32362/24106593-2018-13-3-64-71

Full Text:

Abstract

The article is dedicated to finding out the specific features of the behavior of rare-earth metals in hydrometallurgical processing of pyrochlore-monazite-goetite ores of the Chuktukonsky ore field is shown in the work. Chuktukonsky ore field is a potential source of rare earth metals. The mentioned ores are practically unenforceable. Hydrometallurgical methods for their complex processing were suggested. Agitational and autoclave nitric acid leaching depending on such technological parameters as temperature, HNO3 concentration, process duration, S:L ratio and the use of H2O2 were studied. The possibility of transferring manganese (that is present in a significant amount in the ore) into a nitric acid solution by hydrogen peroxide was considered. Based on the results of the conducted studies, the distribution of REM in the products of the hydrometallurgical conversion of pyrochlore-monazitegoetite ore was estimated. It was found out that incomplete opening of the ore material was observed during agitational leaching: average REM recovery into the solution is 60%. The study made it possible to solve the problem of purifying nitric acid solutions from phosphorus that hinders the subsequent extraction and separation of rare earth metal ions forming strong complexes with rare earths. Removal of phosphorus from the solution was achieved by conducting the process under pressure at elevated temperatures (200-230 0C). It was found that the optimal decomposition conditions ensuring the transfer of almost 99% of the REM into the nitric acid solution are: 25% solution of HNO3, ore size - 0.071 mm; 5% by volume H2O2; t(160 0С) = 1 h; t(230 0С) = 1 h, gradual temperature increase from 160 to 230 0С; S:L = 1:8. Autoclave nitric-acid leaching allows selecting rare earth metals from the main part of iron, phosphorus and niobium.

About the Authors

N. A. Permyakova
MIREA - Russian Technological University (M.V. Lomonosov Institute of Fine Chemical Technologies); N.M. Fedorovsky All-Russian Scientific-Research Institute of Mineral Resources
Russian Federation

Postgraduate Student, K.A. Bolshakov Chair of Chemistry and Technology of Rare and Scattered Elements, Nanosized and Composite Material

86, Vernadskogo Pr., Moscow 119571, Russia

Junior Research Assistant of the Technological Department

31, Staromonetny per., Moscow 119017, Russia



E. I. Lysakova
MIREA - Russian Technological University (M.V. Lomonosov Institute of Fine Chemical Technologies)
Russian Federation

Ph.D. (Chem.), Docent, Associate Professor of K.A. Bolshakov Chair of Chemistry and Technology of Rare and Scattered Elements, Nanosized and Composite Materials

86, Vernadskogo Pr., Moscow 119571, Russia



S. I. Anufrieva
N.M. Fedorovsky All-Russian Scientific-Research Institute of Mineral Resources
Russian Federation

Ph.D. (Chem.), Chief of the Technological Departmen

31, Staromonetny per., Moscow 119017, Russia



E. G. Likhnikevich
N.M. Fedorovsky All-Russian Scientific-Research Institute of Mineral Resources
Russian Federation

Ph.D. (Eng.), Leading Researcher of the Technological Department

31, Staromonetny per., Moscow 119017, Russia



References

1. Bykhovskiy L.Z., Levchenko E.N., Ontoeva T.D., Picalova V.S., Rogozhin A.A. Prospects for high-tech industries Russia needs rare metal mineral raw materials. Razvedka i okhrana nedr (Prospect and Protection of Mineral Resources). 2016; (9): 106-115. (in Russ.).

2. Bykhovskiy L.Z., Potanin S.D., Kotelnikov E.I. On the prospects and priorities for developing the mineral and raw materials potential rare-earth and scandium raw materials of Russia. Razvedka i okhrana nedr (Prospect and Protection of Mineral Resources). 2016; (8): 3-8. (in Russ.).

3. Bykhovskiy L. Z., Arkhipova N. A. Ore base of strategic rare metals of Russia: State, prospects for development and development. Gornyi zhurnal (Mining Journal). 2017; (7): 4-9. (in Russ.).

4. Likhnikevich E.G., Permyakova N.A., Sycheva N.A. The behavior of manganese and rare earth elements in the hudrometallurgical processing of complex raremetal-rare-earth ores. Razvedka i okhrana nedr (Prospect and Protection of Mineral Resources). 2016; (7): 51-54. (in Russ.).

5. Korovin S.S., Zimina G.V., Reznik A.M. [et al.] Rare and scattered elements. Chemistry and technology. In three books. Book I. Moscow: MISIS Publ., 1996. 376 p. (in Russ.).

6. Zelikman A.N., Korshunov B.G. Metallurgy of rare metals. 2nd edition. Moscow: Metallurgiya Publ., 1991. 432 p. (in Russ.).

7. Vol'dman G.M., Zelikman A.N. The theory of hydrometallurgical processes. 4th edition. Moscow: Intermet Engineering Publ., 2003. 464 p. (in Russ.).

8. Kuzmin V.I., Shabanov V.F., Kuzmin D.V. Method for processing ferrous rare-earth phosphate ores: pat. 2551332 Russian Federation. No. 2013153434/02; filled 02.12.2013; publ. 20.05.2015.

9. Likhnikevich E.G., Petrova N.V., Mikchailova N.S. [et al.] Complex processing of niobium-rare-earthphosphate ores by hydrometallurgical method. Razvedka i okhrana nedr (Prospect and Protection of Mineral Resources). 1999. (1): 42-43. (in Russ.).

10. Philippov A.P., Nesterov Yu.V. Redox processes and intensification of metal leaching. Moscow: Publishing House "Ruda i Metally" ("Ore and Metals"), 2009. 543 p. (in Russ.).

11. Zelikman A.N., Korshunov B.G., Elyutin A.V., Zakharov A.M. Niobium and tantalum. Moscow: Metallurgiya Publ., 1990. 296 p. (in Russ.).

12. Chekmarev A.M. Solvometallurgy-perspective direction of metallurgy of rare and non-ferrous metals. Moscow: Atomizdat Publ., 2004. 190 p. (in Russ.).

13. Gromov P.B., Muzhdabaeva M.A., Kopkova E.K., Serba N.V. Extraction of niobium and tantalum at decomposition of the vismutotantalit mineral acids. Tsvetnye metally (Non-Ferrous Metals). 2018; (1): 28-33 (in Russ.).

14. Gromov P.B., Drogobuzhskaya S.V., Kopkova E.K., Muzhdabaeva M.A. Leaching of niobium(V) and tantalum(V) from plumbomicrolita non-aqueous-based solvent of monohydric aliphatic alcohols. Khimicheskaya tekhnologiya (Chemical Technology). 2015; 16(1): 39-45. (in Russ.).


For citation:


Permyakova N.A., Lysakova E.I., Anufrieva S.I., Likhnikevich E.G. BEHAVIOR OF RARE-EARTH METALS IN HYDROMETALLURGICAL PROCESSING OF PYROCHLOR-MONAZITE-GOETHITE ORES. Fine Chemical Technologies. 2018;13(3):64-71. (In Russ.) https://doi.org/10.32362/24106593-2018-13-3-64-71

Views: 171


ISSN 2410-6593 (Print)
ISSN 2686-7575 (Online)