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2 160 786

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IPC

(21) (22)

Application

99124171/02, 1999-11-11

(24)

Start date

1999-11-11

(22)

Actual filing date

1999-11-11

(45)

Published

2000-12-20

(72)

Inventor

Ljakishev N.P.Reznichenko V.A.Sadykhov Gusejngulu Bakhlul OglyGorjachkin V.I.Goncharenko T.V.Rabinovich E.M.Merzljakov K.N.Sukhov L.L.Kuz'Michev S.E.Nazarenko N.N.Frolova O.V.Frolov S.P.

(73)

Holder

Institut Metallurgii I Materialovedenija Im. A.A. Bajkova RanOtkrytoe Aktsionernoe Obshchestvo

METHOD OF EXTRACTION OF VANADIUM FROM HIGH- CALCIUM SLAGS Russian patent published in 2000 - IPC

Abstract RU 2160786 C1

FIELD: extraction of vanadium from high calcium slags after converting vanadiumiron by monoprocess. SUBSTANCE: pulp of ground slag is treated with sulfuric acid before filtration and sulfatized slag is subjected to oxidizing roasting. Roasted slag is leached by sulfuric acid solubilizing vanadium for further settling in form of commercial V₂O₅. Optimal conditions of proposed method are: flow rate of sulfuric acid for treatment of pulp of ground slag in the amount of 5 to 15 % of mass of slag at maintenance of Hp of pulp between 8 and 9.5, roasting temperature of charge of from 800 to 1125 C and leaching roasting product with diluted sulfuric acid (1:1 to 3) within temperature range of from 25 to 50 C. EFFECT: increased of extraction of vanadium from high-calcium slag by 25% (from 50-60 to 75-85%). 2 tbl, 6 ex

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RU 2 160 786 C1

Authors

Ljakishev N.P.

Reznichenko V.A.

Sadykhov Gusejngulu Bakhlul Ogly

Gorjachkin V.I.

Goncharenko T.V.

Rabinovich E.M.

Merzljakov K.N.

Sukhov L.L.

Kuz'Michev S.E.

Nazarenko N.N.

Frolova O.V.

Frolov S.P.

Dates

2000-12-20—Published

1999-11-11—Filed