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Copper from Combined Copper Oxide Ore

     

Method for Hydrometallurgical Extraction of Copper from Combined Copper Oxide Ore

The method comprises the following steps:

1、Crush and then grind the combined copper oxide ore to obtain ore powder;

2、Pretreat the ore powder with an alkaline solution to obtain a pretreatment solution and pretreatment residue;

3、Perform acid leaching treatment on the pretreatment residue, and obtain a copper-containing acid leaching solution after filtration;

4、Extract copper from the copper-containing acid leaching solution to obtain sponge copper.

The present invention first pretreats the ore powder of combined copper oxide ore with an alkaline solution, then achieves the leaching of copper from the combined copper oxide ore via the acid leaching process, and further recovers to obtain a sponge copper product. The invention exhibits a significant extraction effect on copper in combined copper oxide ores where the occupancy rate of the copper binding phase reaches 40% or more, with the copper leaching rate ranging from 80% to 93.5%.

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