Extraction of copper from copper processing plant waste by leaching

Abstract

On the territory of Uzbekistan, copper is mainly found in chalcopyrite’s and chalcocite’s, the enrichment of copper minerals results in waste and tailings as a result of technological processing. The processes of copper processing plants are complex and are constantly characterized by gradual technological processes. The technology of ore enrichment in its initial state can be enriched in several stages: grinding and crushing, flotation processes, gravitational methods, magnetic separation methods. As a result of technological processes, waste and tailings are formed, i.e. they are very poor and unsuitable for the recycling process. And these wastes harm the environment, accumulate and occupy large areas. An effective technology for extracting metals from waste is the process of leaching in the dump, and the ratio of leaching of sulfuric acid with tailings corresponds according to the technological scheme, that is, T : W = 1 : 15; 1 : 10; 1 : 7,5. The tail analysis was studied, which has a copper content of 0.534%, conducted by experiment after leaching, the amount of copper in the solution formed 1.66%. The copper in the solution turned into a solution 3 times more than in its original form.