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2 062 809

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C1

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IPC

(21) (22)

Application

93041198/02, 1993-08-16

(22)

Actual filing date

1993-08-16

(45)

Published

1996-06-27

(72)

Inventor

Kudrjavskij Ju.P.Frejdlina R.G.Grebeneva M.G.Firstov G.A.

(73)

Holder

Aoo Titano-Magnievyj Kombinat"

METHOD FOR PRODUCTION OF CHROMIUM HYDROXIDE OF WASTE MELT OF TITANIUM TETRACHLORIDE PRODUCTION Russian patent published in 1996 - IPC

Abstract RU 2062809 C1

FIELD: method for production of chromium hydroxide. SUBSTANCE: method involves leaching out, separation of insoluble precipitate of solution and precipitation chromium hydroxide of said solution. Mentioned above precipitation is carried out by alkaline reagent at pH 3.0-4.5, the process takes place in the presence of sodium sulfite mass, ratio chromium and sodium sulfite is 1-3. EFFECT: improves efficiency of the method. 2 cl

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RU 2 062 809 C1

Authors

Kudrjavskij Ju.P.

Frejdlina R.G.

Grebeneva M.G.

Firstov G.A.

Dates

1996-06-27—Published

1993-08-16—Filed

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