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 1066870
ABSTRACT OF THE DISCLOSURE A process is disclosed for separating cuprous chloride from a solution comprising cuprous chloride and one or more of a number of metal impurities, the process comprising crystallizing the cuprous chloride from the solution in the presence of copper as cupric chloride in a concentration of a least about 20 grams per liter. In one embodiment, the process is employed for recov- ering substantially pure copper from copper sulfide concentrates containing one or more metal impurities, the basic process com- prising leaching the copper sulfide concentrates with ferric chloride to produce a leach solution comprising cuprous chloride, cupric chloride, ferrous chloride and the metal impurities, crys- tallizing a substantial portion of the cuprous chloride from the leach solution in the presence of cupric ion in a concentration of at least about 20 grams per liter in order to produce substan- tially pure cuprous chloride and a mother liquor, separating the crystallized cuprous chloride from the mother liquor, reducing the crystallized 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 li- quor in order to remove the impurities.
245734
Goens Duane N.
Kruesi Paul R.
Cyprus Metallurgical Processes Corporations
Na
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