METHOD OF SCANDIUM EXTRACTION Russian patent published in 1995 - IPC

Abstract RU 2049728 C1

FIELD: extraction chemistry. SUBSTANCE: solution of scandium and nonferrous metals containing sodium perchlorate and hydrochloric acid is shaken with 0.05-0.1M benzoyl-4-antipyrine solution in chloroform. Scandium is reextracted with water at pH 3.0-3.5. Aqueous phase is treated with 0.5-1.0M potassium hydroxide up to pH about 8.5. Precipitate is filtered, washed and dried. Product purity is 99.99% EFFECT: increased purity of product. 3 tbl

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RU 2 049 728 C1

Authors

Degtev M.I.

Mel'Nikov P.V.

Toropov L.I.

Dates

1995-12-10—Published

1993-02-11—Filed