№83-1
Hydrometallurgical recovery of molybdenum and critical raw materials from technogenic deposits of coal preparation waste
R. Dychkovskyi1, https://orcid.org/0000-0002-3143-8940
I. Miroshnykov1, https://orcid.org/0009-0005-6451-3969
A. Pererva2 https://orcid.org/0009-0009-0542-595X
1Dnipro University of Technology, Dnipro, Ukraine
2PJSC "Lviv Coal Company", Lviv region, Sokal district, Silets village, Ukraine
Coll.res.pap.nat.min.univ. 2025, 83:7–21
Full text (PDF)
https://doi.org/10.33271/crpnmu/83.007
ABSTRACT
Purpose. Scientific substantiation and development of hydrometallurgical approaches for the recovery of molybdenum and other critical raw materials from technogenic deposits of coal beneficiation waste, aimed at increasing their resource value, reducing environmental impact, and creating prerequisites for integrated processing.
Methods. The study is based on a sequential and integrated preparation of coal beneficiation waste samples using analytical and experimental methods. An analytical framework for hydrometallurgical technology for the recovery of molybdenum and associated critical elements was developed, involving variation in reagent type and concentration, temperature, process duration, and solid-to-liquid ratio. Process efficiency was evaluated based on recovery and selectivity indicators of target components.
Results. It was established that the application of the developed hydrometallurgical technology ensures efficient recovery of molybdenum and associated critical elements from technogenic waste. The influence of key process parameters on recovery and selectivity indicators was determined, enabling substantiation of optimal processing conditions and enhancement of the resource value of the waste.
Originality. Lies in the development of an integrated approach to the hydrometallurgical recovery of molybdenum and associated critical elements from coal beneficiation waste of technogenic deposits, combining stepwise sample preparation with variation of key process parameters. Relationships between these factors and the recovery and selectivity of target components were established, enabling the determination of optimal processing parameters and enhancement of the resource value of the waste.
Practical implication. Lies in the creation of a scientifically substantiated methodology for hydrometallurgical processing of coal preparation waste from technogenic deposits in Western Ukraine for efficient recovery of molybdenum and other critical elements. The proposed approaches enhance the resource value of technogenic deposits, reduce waste volumes and environmental impact, and provide a basis for implementing industrial technologies for comprehensive waste processing and forming closed-loop resource utilization in the coal industry.
Keywords: coal preparation waste, technogenic deposits, critical raw materials, molybdenum, hydrometallurgy, resource efficiency.
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date of first submission of the article to the publication – 10/03/2025
date of acceptance of the article for publication after review – 11/04/2025
date of publication – 12/29/2025