Production of copper by gaseous reduction

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

1975-11-28

1977-04-19

Satterfield, Walter R.

Specialized metallurgical processes, compositions for use therei

Processes

Electrothermic processes

75108, 75109, 75117, C22C 104, C22B 110, C22B 1500

Patent

active

040185958

ABSTRACT:
An improvement in the process of producing substantially oxide free copper from copper salts by reacting an acidic aqueous solution which contains the copper salts with a reducing gas at elevated temperature and pressure to precipitate metallic copper. The improvement for producing copper in free-flowing powder 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.

REFERENCES:
patent: 2836485 (1958-05-01), Schaufelberger
patent: 3669643 (1972-06-01), Bagley et al.
patent: 3694185 (1972-09-01), Kunda et al.
patent: 3756866 (1973-09-01), Parker et al.
patent: 3833351 (1974-09-01), Neskora et al.

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