In 2018, LLC «LIT» commissioned the first Russian small-tonnage production of high-purity neodymium oxide. The raw material for its production is a neodymium solution manufactured by the extractive separation technology of REE concentrate developed by LLC «LIT».
The production of high-purity neodymium oxide includes: extractive purification of the target component from REE impurities, purification from alkaline earth and transition metal impurities, precipitation of insoluble neodymium salts, calcination of the precipitate, sieving and packaging of finished products. At all stages of the technological process, reagents exclusively of the High-Purity brand and highly purified water are used.
Extractive purification of neodymium is carried out using automated cascades of centrifugal extractors EC-10FA of its own design and manufacture (see Figure 1).