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Low-Grade High-Mud Copper Oxide Ore

     

This process involves the following steps:

1、Run-of-mine ore undergoes crushing and screening. The +50mm particle size fraction is transported to the stockyard for heap construction, while the -50mm fraction is subjected to acidic ore washing treatment.

2、Sulfuric acid is added to the washing solution to remove part of the alkaline gangue during ore washing. After solid-liquid separation and precipitation of the washing solution, the acid solution is recycled for reuse.

3、After treatment in the acidic ore washing system, the +0.074mm sand fraction is conveyed to the stockyard for heap construction, and the -0.074mm mud fraction is sent to the agitation leaching section.

4、The agitation leaching solution is combined with the heap leaching solution, then fed into the solvent extraction and electrowinning (SX-EW) process, ultimately yielding cathode copper products.

This process boasts advantages including short flow, simple equipment, low investment, low operating cost, and minimal environmental impact. It further resolves issues such as poor permeability in heap leaching and low copper leaching rate caused by the presence of mud and the dissolution-precipitation of alkaline gangue. It improves copper recovery efficiency and enables the comprehensive utilization of high-mud low-grade copper oxide ore resources.

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