Secondary copper sulfide treatment method

Abstract

The invention relates to a secondary copper sulfide treatment method. The method includes the steps that ore is re-graded according to the content of clay; after waste rock is classified according tochemical components, the ore adopts different treatment methods and uses different equipment to realize classification and heaping in a heap leaching field; and the waste rock is discharged in a designated soil discharge area according to classification requirements. Different leaching process means are adopted according to different leaching periods of the ore in the heap leaching field, and thefinal leaching rate of copper is improved. An acid mist collecting device is added to change the working environment of a groove surface, so that the body health of employees is protected, finished cathode copper is finally produced, and economic benefits are brought to enterprises.

Description

technical field [0001] The invention belongs to the technical field of mining secondary copper sulfide ore, and in particular relates to a treatment method for secondary copper sulfide ore. Background technique [0002] Secondary copper sulfide ores are not rich in reserves in the world, because the copper grade contained in them is low, usually less than 1%. In the process of processing, the production process of heap leaching is often used, and more than 400 days of leaching are required. cycle. In the mining process of secondary copper sulfide ore, due to the influence of changes in various factors such as the internal mineral content of the ore, environmental protection requirements for reclamation, topography of the heap leaching site, leaching rate, occupational health and other factors, the secondary copper sulfide ore is processed. A series of questions: [0003] (1) Due to reclamation requirements, the waste rock under the surface soil of the dump site needs to ha...

AI Technical Summary

Problems solved by technology

[0004] (2) With the continuous change of mining steps and areas in the open-pit mining process, the mineral composition content of the mined secondary copper sulfide ore has changed greatly, and the content of clay minerals such as montmorillonite, illite and kaolin in the ore More than 20%, resulting in the ore in the leaching process, after contact with the acid solution, a muddy mud layer will be produced, the air permeability and liquid permeability of the stockyard will become poor, and the copper in the ore will not be able to enter the solution, resulting in copper The final leaching rate is lower

[0007] (5) During the electrowinning process cycle of the copper-containing electro-rich liquid, oxygen is precipitated on the surface of the anode plate and evaporates from the surface of the solution to carry acidic substances during the electrification process, resulting in a large amount of acid mist on the electrowinning tank surface, which has a negative impact on the working environment of the tank surface. impact, and is likely to cause harm to the health of employees

Images