Recovery of copper from its sulfides and other sources using hal

Details Recovery of copper from its sulfides and other sources using hal Recovery of copper from its sulfides and other sources using hal

1997-07-28

1999-11-23

Willis, Prince

Specialized metallurgical processes, compositions for use therei

Processes

Free metal or alloy reductant contains magnesium

423 38, 4231501, 429 49, C21B 1500, C01G 5500, B01D51100, H01M 650

Patent

active

059893117

ABSTRACT:
Copper and nickel are extracted from their elemental state, complex sulfides, ores, and other materials such as scrap by leaching them with a solution containing halogen salts: bromine/bromide, or iodide/iodine, oxygen and sodium or potassium nitrate. The invented process is particularly effective for chalcopyrite and pentlandite in an autoclave at a temperature of 100.degree. C.-150.degree. C.

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J.E. Dutrizac, "The Leaching of Sulphide Minerals in Chloride Media," Hydrometallurgy, vol. 29 (1992), pp. 1-45, (No Month).

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