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2 245 936

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IPC

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Application

2003116506/02, 2003-06-02

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Start date

2003-06-02

(22)

Actual filing date

2003-06-02

(45)

Published

2005-02-10

(72)

Inventor

Sirina T.P.Mizin V.G.Rabinovich E.M.Sukhov L.L.Belikova O.V.

(73)

Holder

Sirina Tat'Jana PetrovnaMizin Vladimir Grigor'EvichRabinovich Efim MikhajlovichSukhov Leonid LeonidovichBelikova Ol'Ga Vasil'Evna

METHOD FOR VANADIUM RECOVERY Russian patent published in 2005 - IPC

Abstract RU 2245936 C1

FIELD: vanadium metallurgy, in particular reprocessing of complex vanadium-, manganese-, calcium-containing raw material.

SUBSTANCE: invention relates to stable vanadium recovery into solution by substantially full leaching of acid soluble vanadium, obtained by burning, in one step, due to adding of oxalate-ions in pulp. To obtain wastewater with low vanadium concentration after vanadium pentoxide hydrolytic precipitation, prehydrolitic solutions are treated with alkaline earth metal hydroxide, and/or carbonate, and/or oxide at pH 3.6-4.9 and agitation for 20-60 min. Treatment may be carried out in pulp up to complete leaching using both clean alkaline earth metal compounds and natural materials or waste products containing mixture thereof. Method is useful in reprocessing of complex raw material, in particular converter dross calcined with sodium- and calcium-containing additives.

EFFECT: method for vanadium recovery with improved stability.

3 cl, 5 tbl, 9 ex

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RU 2 245 936 C1

Authors

Sirina T.P.

Mizin V.G.

Rabinovich E.M.

Sukhov L.L.

Belikova O.V.

Dates

2005-02-10—Published

2003-06-02—Filed