Ammoniacal extraction of copper from metallic materials

Details Ammoniacal extraction of copper from metallic materials Ammoniacal extraction of copper from metallic materials

1975-03-28

1976-07-27

Vertiz, Oscar R.

Specialized metallurgical processes, compositions for use therei

Processes

Electrothermic processes

75103, 75117, 423 33, 423 35, 423 36, 423 24, C01G 110, C22B 1510

Patent

active

039716520

ABSTRACT:
A method of leaching copper values from copper dross obtained from pyro-metallurgical lead bullion by contacting finely-divided particles of the copper dross with an aqueous ammoniacal solution, preferably a solution of ammonium carbonate and ammonium hydroxide, to dissolve copper from the dross. The leaching will usually be carried out in a gas containing free oxygen and the leaching solution may advantageously contain sulphate ions in addition to carbonate ions.

REFERENCES:
patent: 1440186 (1922-12-01), Sulman et al.
patent: 2647830 (1953-08-01), Allen et al.
patent: 2727819 (1955-12-01), Kenny et al.
patent: 3224873 (1965-12-01), Swanson
Kunda et al. "Production of Copper from the Ammine Carbonate System," Copper Metallurgy, Ehrlich, Editor, AIME, New York 1970 pp. 27-69.
Merigold et al. "LIX64N- The Recovery of Copper from Ammoniacal Leach Solutions" Solvent Extraction, Soc. Chem. Ind., London (1971) pp. 1351-1355.

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