Publications
Assessing Environmental and Economic Efficiency in Mineral Processing
The paper proposes an innovative methodology for evaluating the eco-economic efficiency of integrated mineral resource use, addressing gaps in traditional approaches, and highlighting the need for rigorous cost assessment and valuation of primary and by-product components under modern market conditions.
Extraction and Purification of Cerium by Solvent Extraction from a Rare Earth Concentrate to Produce High-Purity Cerium Oxide
The paper presents a hydrometallurgical process for the recovery and purification of cerium from mixed rare earth concentrates. Cerium is selectively separated by oxidation to the tetravalent state and precipitated as Ce(IV) hydroxide from nitrate solutions obtained by nitric acid leaching of rare earth raw materials. The precipitate is redissolved in nitric acid and purified by solvent extraction using 100% tributyl phosphate, followed by oxalate precipitation and calcination. The study aims to determine optimal conditions for efficient cerium separation and deep purification. As a result, high-purity cerium dioxide with a purity of CeO₂ ≥ 99.95% was obtained.
Recovery of Neodymium Oxide from Grinding Waste Generated in Permanent Magnet Production
Rare earth elements are essential to modern technological progress and advanced materials, with their consumption reflecting a country’s industrial development. Neodymium, one of the most important rare earth elements, is widely used through its compounds in electrical, optical, and thermoelectric applications due to their favorable physical and chemical properties.
Recovery of Rare Earth Elements from Wet-Process Phosphoric Acid
This paper highlights several key conceptual categories that underpin the understanding of current processes in rare earth element production and consumption, which are increasingly evident at both national and global markets.
Innovative Magnesiothermic Technology for the Production of High-Purity Metallic Tantalum
Tantalum possesses a range of unique properties that have led to its widespread industrial application. At present, approximately 60% of global tantalum production is accounted for by capacitor-grade tantalum powder. In addition, about 20% is produced as compact metal (foil, sheet, wire, etc.), a significant share of which is also used in capacitor manufacturing.
Methodological Approaches to Optimizing Integrated Mineral Processing
The paper analyzes existing methods for optimizing the depth of beneficiation of multicomponent and polymetallic ores, highlighting their advantages and limitations. It shows that beneficiation depth optimization can be treated as a mathematical optimization problem involving multiple interdependent variables, making it suitable for short-term operational control of concentrate quality. For long-term decisions, the optimal strategy for integrated mineral resource utilization should be defined using a dynamic, investment-based approach that compares alternative options using an economic–mathematical model based on cash flow analysis.
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