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2 140 461

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IPC

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Application

99105528/02, 1999-03-10

(24)

Start date

1999-03-10

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Actual filing date

1999-03-10

(45)

Published

1999-10-27

(72)

Inventor

Miroevskij G.P.Popov I.O.Khagazheev D.T.

(73)

Holder

Otkrytoe Aktsionernoe Obshchestvo Severonikel'"Rao Nikel'"

METHOD OF DISSOLVING METALLIZED MATERIAL CONTAINING NICKEL AND COBALT Russian patent published in 1999 - IPC

Abstract RU 2140461 C1

FIELD: hydrometallurgy. SUBSTANCE: material is treated with sulfuric acid solution in presence of catalyst to form solution and solid residue. According to invention, catalyst is copper-containing material preliminarily dissolved in sulfuric acid and process is carried out at pH 2.0-4.5. EFFECT: increased degree of nickel recovery into sulfate solution and enabled integrated processing of metallized materials from nickel-cobalt production. 2 cl, 2 tbl

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RU 2 140 461 C1

Authors

Miroevskij G.P.

Popov I.O.

Khagazheev D.T.

Dates

1999-10-27—Published

1999-03-10—Filed

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