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The leaching method for chalcopyrite

     

The leaching method for chalcopyrite, a copper ore, falls under wet metallurgical technology and encompasses the following steps:

1、Melt the chalcopyrite with NaOH (a base) to obtain pretreated Chalcopyrite.

2、Mix the pretreated chalcopyrite obtained from step 1 with acid solutions, catalysts, and oxidizing agents for oxidative leaching, yielding copper-bearing leach solution.

The process begins with using a base to fuse the chalcopyrite, altering its crystal structure and facilitating easier copper extraction while lowering subsequent leaching temperatures. In the acid leaching phase, catalysts and oxidizing agents are added to further reduce leaching temperature, shorten leaching time, and enhance copper recovery rates. The experimental results demonstrate that this leaching method operates at 75°C with a leaching time of 2 hours, achieving a copper leaching rate exceeding 99.9%.

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