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Prospects for Metallurgical Development at the Chepetsky Mechanical Plant

Russia is currently implementing measures to expand its rare and rare earth metals industry. Total rare metals production is expected to increase to approximately 16,000 t/y by 2021 and to about 53,000 t/y by 2035.

Growth in REE output is planned through continued exploitation of the Lovozero loparite deposit and the development of two new deposits: Zashikhinskoye (columbite) and Tomtorskoye (pyrochlore–monazite–crandallite). Industrial processing of phosphogypsum, a REE-bearing by-product of phosphate fertilizer production, is also expected to commence.

These raw material sources will also underpin expanded niobium production, including 1,000 t/y Nb₂O₅ from Zashikhinskoye columbite for ferroniobium production, and up to 10,000 t/y Nb from Tomtor concentrates. Tomtor rare earths are planned to be produced as oxides, including 3,500 t/y of didymium (Nd–Pr mixture) and 2,500 t/y of medium and heavy REE concentrates. A hydrometallurgical processing plant in Krasnokamensk is scheduled for commissioning in 2025.

Tantalum production growth is expected through increased processing of loparite concentrate to 24,000 t/y and utilization of Zashikhinskoye columbite (200 t/y Ta₂O₅). Columbite and zircon concentrates from Zashikhinskoye will be processed at the Krasnokamensk chemical-metallurgical plant, planned for launch in 2024.

Production of rare earth oxides (REO) used in high-coercivity magnets (Pr₂O₃, Nd₂O₃, Tb₂O₃, Dy₂O₃) is planned to increase steadily, supported initially by loparite and phosphogypsum, and after 2025 by large-scale processing of Zashikhinskoye and Tomtor concentrates.

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