Wet processing process of high mud cupric oxide mine at high-cold area

The invention provides a wet copper extraction process used in high mud-content copper oxide ores of cold areas. The process comprises the following steps: crude ores are crushed and sieved, coarse fraction ores are sent to a storage yard for piling, fine fraction ores are sent to an ore washing system for washing and grading; placer ores are sent to the storage yard for the piling after washing the ores, and mud ores are sent to an agitation tank for agitation leaching; leaching solution which is obtained from heap leaching and agitation leaching processes is sent for extraction and stripping; stripping concentration solution is sent to an electrodeposition process, and a qualified cathode copper product is obtained; leached slag from the agitation leaching is neutralized and sent to a tailings reservoir for piling. The process has good permeability, fast copper leaching rate, and greatly improved copper leaching rate and leached copper yield per day by the grading and the heap leaching ...