METHOD FOR PRODUCING CATHODIC NICKEL - OTKRYTOE AKTSIONERNOE OBSCHEST

Title:

METHOD FOR PRODUCING CATHODIC NICKEL

Document Type and Number:

WIPO Patent Application WO/2000/053825

Kind Code:

A1

Abstract:

The present invention pertains to the field of metallurgy and essentially relates to methods for producing cathodic nickel from copper- and nickel-containing sulphide raw materials. The method involves separating the fine matte by flotation into copper and nickel concentrates, carrying out an oxidising calcination of the nickel concentrate, reducing the nickel oxide and carrying out an electric extraction of the nickel in baths that include non-soluble anodes, wherein said baths contain a sulphate solution of reduced nickel oxide which has been previously stripped from copper, iron and cobalt impurities. In order to prepare the sulphate solution, the method involves using a reduced nickel oxide which is dissolved in a depleted electrolyte and has an activity of at least 60 %. The non-soluble residue containing precious metals is eventually processed.

Inventors:

KHAGAZHEEV DZHONSON TALOVICH
MIROEVSKY GENNADY PAVLOVICH
ROZENBERG ZHOKVES IOSIFOVICH
RYABKO ALEXANDR GEORGIEVICH
ONISCHIN BORIS PETROVICH
POPOV IGOR OLEGOVICH

Application Number:

PCT/RU2000/000078

Publication Date:

September 14, 2000

Filing Date:

March 10, 2000

Export Citation:

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Assignee:

OTKRYTOE AKTSIONERNOE OBSCHEST (RU)

International Classes:

C22B23/00; C22B23/02; C25C1/08; (IPC1-7): C25C1/08; C22B23/00

Foreign References:

GB1385263A	1975-02-26
US4201648A	1980-05-06
SU280858A
SU1633023A1	1991-03-07

Other References:

KHEIFETS V.L. ET AL.: "Elektroliz nikelya m", METALLURGYA,, 1975, pages 13

Attorney, Agent or Firm:

Grunina, Alla Efimovna (a/ya 15 Moscow, 5, RU)

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