Special issue of the journal «Ugol'» S12-2023

COAL PREPARATION

Original Paper

UDC 543.632.4: 546[35+36+65+161] © T.G. Cherkasova, D.A. Barantsev, 2023

ISSN 0041-5790 (Print) • ISSN 2412-8333 (Online) • Ugol’ – Russian Coal Journal, 2023, № S12, pp. 70-74

DOI: http://dx.doi.org/10.18796/0041-5790-2023-S12-70-74

Title

Hydrofluorination PRODUCTS OF COAL PROCESSING WASTES FROM THE BEREZOVSKAYA CENTRAL PROCESSING PLANT

Authors

Cherkasova T.G. 1 , Barantsev D.A. 1

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

Authors Information

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

Barantsev D.A., Assistant at the Institute of Chemical and Oil and Gas Technologies e-mail: kemche@yandex.ru

Abstract

Against the background of the growing volumes of waste from the coal industry, the direction of finding technological solutions for their processing becomes relevant. Elemental analysis of these wastes showed the presence of rare and rare earth elements in industrially significant concentrations, which allows the use of waste as raw materials. The key stage in processing is the opening of mineral raw materials. Coal industry waste mainly consists of silicon-containing minerals (quartz, clay minerals, feldspar) with high chemical resistance, for the opening of which high temperatures and chemically active reagents (sodium hydroxide, sodium carbonate, sulfuric acid, etc.) are required. This paper presents the results of the opening of carbon enrichment waste using ammonium hydrofluoride in an aqueous solution at the boiling point of water. The results of the distribution of ele? ments in hydrofluorination products are presented. White soot with a silicon oxide content of 87.5% by weight was isolated, the remaining solution was evaporated to obtain ammonium fluoride in which rubidium and caesium were concentrated (the degree of extraction reaches 85.22% by weight, and 89.65% by weight, respectively). It is established that 90% of the mass, the sum of rare earth elements (REE) remains in the cake.

Keywords

Coal mining and processing wastes, Ultimate analysis, White soot, Hy? drofluorination, Concentration, Rare earth elements, Rubidium, Cesium.

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

Cherkasova T.G. & Barantsev D.A. Hydrofluorination Products of coal processing wastes from the Berezovskaya Central Processing Plant. Ugol’, 2023, (S12), pp. 70-74. (In Russ.). DOI: 10.18796/0041-5790-2023-S12-70-74.

Paper info

Received November 1, 2023

Reviewed November 15, 2023

Accepted November 30, 2023