B - Operations – Transporting – 01 – D
Patent
B - Operations, Transporting
01
D
23/156, 53/287
B01D 9/02 (2006.01) C01G 3/04 (2006.01) C01G 3/05 (2006.01) C22B 15/00 (2006.01)
Patent
CA 1065577
ABSTRACT OF THE DISCLOSURE A process is disclosed for separating cuprous chloride from a solution comprising cuprous chloride and at least one metal chloride compatible with the solubility of cuprous chloride, the process comprising crystallizing the cuprous chloride from the solution in the presence of cupric chloride in an amount such that the cupric chloride to compatible metal chloride mole ratio is at least about 0.1. In one embodiment, the process is employed for recovering substantially pure copper from copper sulfide concentrates, generally containing one or more metal impurities, the basic process comprising leaching the copper sulfide concentrates with ferric chloride to produce a leach solution comprising cuprous chloride, cupric chloride, ferrous chloride and the metal impurities, crystal- lizing a substantial portion of the cuprous chloride from the leach solution in order to produce cuprous chloride crystals and a mother liquor, separating the crystallized cuprous chloride from the mother liquor, reducing the crystal- lized cuprous chloride to substantially pure elemental copper, treating a substantial portion of the mother liquor with oxygen and hydrochloric acid to produce iron oxide, cupric chloride and ferric chloride, and treating the remainder of the mother liquor in order to remove the impurities.
245750
Goens Duane N.
Kruesi Paul R.
Cyprus Metallurgical Processes Corporation
Na
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