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Дата издания
30.04.2026На каком языке издана
ISSN
2075-163XОбласть исследования
Тип исследования
Аннотация (краткое описание)
The rapid advancement of high-technology industries critically depends on the supply of rare earth elements (REEs), which constitute strategic raw materials for knowledgeintensive sectors. This study proposes an integrated methodological framework for the development of the Kundybay REE deposit, combining geomechanical substantiation of open-pit slope stability with beneficiation optimization of weathering-crust ores. The novelty of the research lies in the justification of rational pit-wall parameters based on a coupled 3D geological–geotechnical model implemented in the Micromine environment. Structurally disturbed zones were identified and subjected to detailed stability analysis using numerical modeling techniques. Particular emphasis was placed on the delineation of geotechnical domains and factor-of-safety evaluation in Slide2, which enabled refinement of design solutions and optimization of slope geometry. Simultaneously, the study addresses processing challenges of refractory weathering-crust ores through the application of ultrasonic aerohydraulic desliming combined with a vibro-centrifugal separation device. Optimization of slope parameters resulted in a 30 Mt reduction in stripping volume, corresponding to a 16.7% economic gain. The proposed flowsheet achieved a concentrate grade of 948.89 g/t REEs with an overall recovery of 45.66%. The results confirm that integrating geomechanical design with process engineering provides a technically robust and economically efficient basis for REE deposit development.DOI
10.3390/min16040401Тип публикаций
Практическое значение
The practical significance of the study lies in the development of an integrated approach for the exploitation of the Kundybay rare earth element deposit, aimed at improving the technical and economic efficiency of ore mining and processing. Optimization of open-pit slope parameters enabled a reduction of stripping volume by 30 Mt, resulting in a 16.7% economic benefit. The proposed beneficiation flowsheet, based on ultrasonic aerohydraulic desliming and vibro-centrifugal separation, provides a concentrate grade of 948.89 g/t REEs with an overall recovery of 45.66%. The obtained results can be applied in the design and operation of rare earth deposits and in the development of efficient processing technologies for weathering-crust ores.Квартиль
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minerals-16-00401-with-cover.pdf