Authors: T.G. Cherkasova, I.V. Isakova, Yu.R. Giniyatullina, V.V. Chenskaya

Title of the article: Development of a method for complex processing of carbon enrichment waste using sulfatization

Year: 2023, Issue: 5, Pages: 47-54

Branch of knowledge: 2.6.8. Technology of rare, scattered and radioactive elements

Index UDK: 546.05:546.2: 546.65, 661.1

DOI: 10.26730/1999-4125-2023-5-47-54

Abstract: The possibility of complex processing of technogenic mineral deposits will lead to the release of significant territories occupied by waste, reduce the environmental impact on the atmosphere, import substitution, and obtain positive economic, environmental and social effects. The demand for rare earth elements (REE) is growing due to their use in various advanced technological fields: radio electronics, "green" energy, aviation and rocket engineering, shipbuilding, nuclear industrial complex and military-industrial sector, and the lack of materials capable of replacing them in terms of characteristics and properties. Russia should consolidate the status of a country with high technologies in the field of processing of coal mining waste, coal processing and coal enrichment. The article presents a proven scheme for processing carbon enrichment waste to obtain a concentrate of rare earth metals (REM) and silicon-containing cake. The methodology of the experiment is compiled, the mode parameters of the operations of sulfatization, leaching by water, precipitation, leaching of the REM-containing cake and the production of oxalate salts (temperature and time of the processes, the ratio of components, the speed of rotation of the agitator) are given. The experiment was carried out with the waste of coal enrichment of the Berezovskaya Coal processing Plant (after heavy-medium separation and hydrosizers). The obtained samples were examined by X-ray fluorescence analysis, yttrium and iridium oxides were detected.

Key words: coal enrichment waste leaching extraction sintering cake concentrate rare and rare earth elements

Receiving date: 29.08.2023

Approval date: 20.11.2023

Publication date: 30.11.2023

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