FIELD: process engineering.
SUBSTANCE: invention relates to hydrometallurgy of rare-earth metals, namely, to production of nano-sized powders of lanthanide oxides. Proposed method comprises precipitating lanthanide salt from nitrate solution with lanthanide oxide concentration of 30-50 g/l by solid ethanedioic acid with continuous addition of polyacrylamide in the form of solution with concentration of 0.005-0.015% in amount of 5.0-10.0 mg par 1.0 kg of lanthanide oxide, its separation, washing, drying at 60-65°C to residual humidity of 5-6%, calcination of obtained precipitate for 2.0-2.2 at 380-825°C depending upon properties of individual lanthanides.
EFFECT: lanthanide oxide with nano-sized particles and uniform distribution of sizes.
2 cl, 1 tbl, 1 ex
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