FIELD: industrial inorganic synthesis.
SUBSTANCE: process involves dissolving scandium-containing concentrate in mineral acid, removing impurities from scandium solution, separating precipitate from the solution. Precipitate obtained is treated with alkali reagent, and pulp is filtered. Separated scandium oxyhydrate precipitate is treated with formic acid, resulting slurry is filtered, scandium formate is separated from mother liquor, washed, dried, and calcined.
EFFECT: simplified process and reduced loss of scandium in concentrate processing stage.
5 cl, 2 ex
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