METHOD OF SCANDIUM EXTRACTION FROM TITANIUM TETRACHLORIDE PRODUCTION WASTE Russian patent published in 1996 - IPC

Abstract RU 2068392 C1

FIELD: inorganic chemistry, chemical technology. SUBSTANCE: waste of titanium chlorate were dissolved in water or hydrochloric acid. Solvent or pulp is treated with sodium sulfite, iron or magnesium chip. Then alkaline agent is added up to pH = 3.5-4.5, filtered, precipitate is washed and dissolved in hydrochloric acid at concentration 250-350 g/dm³ at ratio precipitate : hydrochloric acid = (2.5-3.5):1. Solution is contacted with TVEKS-TBF, extractant is washed, scandium is reextracted and difficultly soluble scandium compounds were precipitated. Method is used at hydrometallurgy processing waste in titanium tetrachloride production and for scandium extraction. EFFECT: improved method of extraction. 5 cl, 4 tbl

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RU 2 068 392 C1

Authors

Kudrjavskij Ju.P.

Volkov V.V.

Jakovenko B.I.

Bondarev Eh.I.

Dates

1996-10-27—Published

1993-04-23—Filed