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Metallurgical Method for Copper Recovery

     

Metallurgical Method for Copper Recovery from Oxidized Copper Ores:

This method is characterized by replacing the traditional ammonia leaching process (using NH3-(NH4)CO3 or NH3-(NH4)2SO4 as the leaching agent) with a novel leaching system employing NH3-NH4F (or NH3-NH4HF2), thereby eliminating the need for the high-temperature reduction roasting and constant-pressure ammonia leaching process. Instead, it directly employs constant-pressure ammonia leaching. The integration of solvent extraction and electrowinning with this method results in a new, streamlined process flow for copper recovery from oxidized copper ores.

This approach offers advantages such as shortened process flows, simplified operations, low energy consumption, shorter leaching times, and high copper leaching rates, making it ideal for selectively recovering copper from challenging oxidized copper ores, particularly those with high alkalinity in their gangue.

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