Treating copper-bearing materials with a heterocyclic amine...

Details Treating copper-bearing materials with a heterocyclic amine... Treating copper-bearing materials with a heterocyclic amine...

C - Chemistry, Metallurgy

22

B

53/284

C22B 15/00 (2006.01) C22B 3/16 (2006.01)

Patent

CA 1130572

ABSTRACT A method of winning copper, and accompanying metals, from sulfidic ores, post-flotation residues and waste products from the pyrometallurgical processing of copper ores. The insoluble minerals of the metals are trans- fered into solution consists by leaching the above materials, initially ground to below 0.1 mm particle size, by means of a mixture of a heterocyclic aromatic amine, preferably pyridine, and a chlorinated hydrocarbon of C1 to C3 chain length, preferably of a protic nature as chloroform. The liquid phase is separated from the solid residue, and the metal compounds are separated from the solution and deposited by known methods, e.g. by electro- deposition. The leaching process is preferably performed at the boiling temperature of the solvent mixture, the solvents being recycled to the process, preferably after purification by known methods.

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