C - Chemistry – Metallurgy – 22 – B
Patent
C - Chemistry, Metallurgy
22
B
53/220, 53/283
C22B 11/00 (2006.01) C01G 3/05 (2006.01) C01G 5/02 (2006.01) C22B 9/02 (2006.01) C22B 15/00 (2006.01)
Patent
CA 1193106
Abstract Purification of cuprous chloride is accomplished by distillation wherein cuprous chloride is recovered as the overhead product, and substantially all of the silver chloride and other impurities present report Lo the bottoms. Typical. impurities in copper ore leach liquors include chlorides of silver, calcium, arsenic, bismuth, iron, nickel, lead, anti- mony, selenium, tellurium, silicon, mercury, manganese, tin, aluminum, magnesium, chromium, cobalt, cadmium, molybdenum, zinc and titanium, most of which may be excluded in large part by crystallization of cuprous chloride. Measurable amounts of these impurities, however, report to the crystals, and silver tends to co-precipitate with the copper in major amounts. Distillation accomplishes a high degree of copper- silver separation and substantial elimination of other impurities from the copper.
403737
Cyprus Metallurgical Processes Corporation
Gowling Lafleur Henderson Llp
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