Production of copper by gaseous reduction

Details Production of copper by gaseous reduction Production of copper by gaseous reduction

C - Chemistry, Metallurgy

22

B

75/155

C22B 15/00 (2006.01) B22F 9/26 (2006.01) C22B 5/12 (2006.01)

Patent

CA 1043594

ABSTRACT OF THE DISCLOSURE An improvement in the process of producing substan- tially oxide free copper from copper salts by reacting an acidic aqueous solution which contains the copper salts with a reduc- ing gas at elevated temperature and pressure to precipitate metallic copper. The improvement for producing copper in free-flowing power form comprises providing in the aqueous solution a finite amount of an addition agent selected from the group consisting of polymeric polyamine compounds having amino groups linked by alkyl groups having 2 to 4 carbon atoms.

240577

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