COAL PREPARATION


Original Paper

UDC 662.613.654.1:669.85 A.V. Tikhomirova, E.S. Legocheva, T.G. Cherkasova, 2023

ISSN 0041-5790 (Print) ISSN 2412-8333 (Online) Ugol  Russian Coal Journal, 2023, S12, pp. 79-83

DOI: http://dx.doi.org/10.18796/0041-5790-2023-S12-79-83

Title

DEVELOPMENT OF METHODOLOGY TO EXTRACT A CONCENTRATE OF RARE AND RARE-EARTH ELEMENTS FROM COAL PROCESSING WASTE USING AQUEOUS LEACHING

Authors

Tikhomirova A.V.1 , Legocheva E.S.1 , Cherkasova T.G. 1

1 T.F. Gorbachev Kuzbass State Technical University, Kemerovo, 650000, Russian Federation

Authors Information

Tikhomirova A.V., PhD (Chemistry), Associate Professor, Associate Professor of the Institute of Chemical and Oil and Gas Technologies, e-mail: tav.htnv@kuzstu.ru

Legocheva E.S., Masters Student of the Institute of Chemical and Oil and Gas Technologies, e-mail: liza.legocheva@yandex.ru

Cherkasova T.G., Doctor of Chemical Sciences, Professor, Director of theInstitute of Chemical and Oil and Gas Technologies, e-mail: ctg.htnv@kuzstu.ru

Abstract

In modern technology, more and more attention is paid to waste recycling and waste-free production. Due to the shortage of rare and rare earth metals for the innovative development of the economy of the Russian Federation, the urgency of the problem of extracting these metals from man-made deposits, among which carbon enrichment waste can be considered, is substantiated. During the development of conditions for the extraction of rare and rare-earth elements from a mixture of carbon enrichment waste  rocks with heavymedium separation and deposition, their chemical opening and subsequent cold water leaching were carried out. It was revealed that in systems with forced introduction of lanthanum(III) oxide, lanthanum passes into the filtrate by 70%, in the case of real systems, only 40% of lanthanum passes into the filtrate. The same dependence is observed for other lanthanides of the cerium group. Rare-earth elements of the yttrium group pass from the waste to the filtrate as well as lanthanides of cerium only by 40%.

Keywords

Coal waste, Coal processing, Rare-earth elements, Cerium group lantanoids, Yttrium group lantanoids, Acid digestion, Aqueous leaching.

References

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Acknowledgements

The research was financially supported by a grant from the Russian Ministry of Education and Science (Agreement No 075-15-2022-1193).

For citation

Tikhomirova A.V., Legocheva E.S. & Cherkasova T.G. Development of meth? odology to extract a concentrate of rare and rare-earth elements from coal processing waste using aqueous leaching. Ugol, 2023, (S12), pp. 79-83. (In Russ.). DOI: 10.18796/0041-5790-2023-S12-79-83.

Paper info

Received November 1, 2023

Reviewed November 15, 2023

Accepted November 30, 2023