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(11)    Patent No :    AP 2636   
(21)    Application No :    AP/P/2010/005138   
(22)    Filing Date :    12.07.2007   
(24)    Date of Grant &    05.04.2013   
           
(45)    Publication :

(30)    Priority Data

(33) Country  (31) Number   (32) Date

(84)    Designated State

BW  NA   ZM   ZW

(73) Applicant(s)

CUPRACHEM TECHNOLOGY (PROPRIETARY) LIMITED, 1

Einstein Street, Ferrobank, Witbank, 1034,
South Africa
72) Inventors
PRETORIUS Gerard, South Africa
(74) Representative
ADAMS AND ADAMS MOZAMBIQUE
MOZAMBIQUE

(51)  International  Classification   C22B 15/02 (2006.01)    C22B 3/20 (2006.01)
(54)    Title

The production of copper

(57)    Abstract

A method of producing copper from a solution containing a copper (II) salt includes the steps of reducing at least some of the copper (II) salt to a copper

(I)    salt in a first reduction step, solubilising the copper (I) salt to produce a soluble copper (I) complex, and reducing the soluble copper (I) complex to

(56)    Documents Cited :    US 6 007 600 A    WO 2005/083132 A    US 3 353 950 A

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