Heap leaching is a method of spraying the ore heap with a leach solution to selectively leaching the useful components in the ore during the downward infiltration process, and recovering the useful components from the rich liquid flowing out of the bottom of the heap. According to the different grades of ore, it can be divided into ore heap leaching and waste rock heap leaching; according to the different storage yard locations, it can be divided into surface heap leaching and underground heap leaching. Heap leaching is mainly used in the mining of copper, uranium, gold and silver ore and the treatment of smelter slag and dressing plant tailings containing useful components. Heap leaching has a simple process, less equipment, and low energy consumption, so capital investment and production costs are also low; its main disadvantage is that the leaching rate of useful components in the ore is low.
Not all copper ores are suitable for heap leaching. Before the leaching treatment, the adaptability of each forest type copper ore to heap leaching must be understood. Since sulfuric acid or sulfuric acid-ferric sulfate is the main practical leaching agent for copper minerals, ores containing a large amount of acid-consuming minerals (such as calcium carbonate (or) magnesium carbonate) sometimes consume a large amount of acid, making the leaching process uneconomical. In addition, copper in many ores is usually present in chalcopyrite, which adds a cup advantage to heap leaching due to the slow dissolution rate of copper in this mineral. Oxidized cave minerals and natural caves require a flood source of sulfuric acid or ferric sulfate monosulfate.
- Correct application of granulation technology to improve copper leaching
Practice has proved that it is not suitable for heap leaching of fine-grained materials and ore with too high clay content. It must be granulated and pretreated to improve the permeability of the heap before heap leaching. The granulation pretreatment can greatly strengthen the leaching of gold and speed up the leaching of copper. , in most cases can also improve the leaching rate of copper. - Different heap leaching processes are used to improve the leaching effect
The copper mine adopts the process of “staged stacking, cross spraying, and multi-stage countercurrent leaching”, which has achieved obvious economic benefits. - Adopt dripping technology to improve the leaching effect
Spraying and dripping are two different liquid distribution methods in the heap leaching process, both of which can produce uniform liquid distribution, and uniform liquid distribution is one of the key factors to improve the copper leaching rate.
Related Articles
Fuller traylor gyratory crushers,Fuller traylor nt crushers
Our experience with Mining Industries (Minerals, Cement, and Aggregate) has resulted in a complete line of Gyratory Crushers to satisfy the requirements of a wide...
Concrete crushing machine industry for sale
Commonly used concrete crushing machine industry include hammer crusher or jaw crusher,C&M Mining Machinery is a professional manufacturer of crushing and screening equipment business, for...
Crushing screening plant in south africa
Crushing screening plant is a facility that processes rocks and other materials to produce various sizes of aggregate and sand for use in construction and...
Mobile Crusher and Screeners for Granite
Introduction to Mobile Crusher and Screeners for Granite Granite, a hard and abrasive rock, is widely used in construction, road building, and architectural projects. Efficiently...
How to adjust the discharge opening of cone crusher?
Volcanic rock does not forgive weak metallurgy or lazy operators. Running a 15mm Closed Side Setting (CSS) on 220MPa granite in Western Australia without verifying...
portable dolomite crusher manufacturer angola
A portable dolomite crusher is a mobile crushing device used for breaking down large pieces of dolomite into smaller sizes. It is a popular option...
what is a rock crusher and a jaw crusher
A rock crusher is a machine used to crush rocks into smaller pieces, usually for gravel or construction purposes. It utilizes mechanical force to break...
Working of permanent magnet in cone crusher
Permanent magnet is a type of magnet that retains its magnetic properties even when it is not in the presence of an external magnetic field....
450 t/h copper ore crushing plant
450 t/h copper ore crushing solutions Capacity: 450 t/hMaterial: copper oreFeed size: ≤ 1000mmDischarge size: ≤ 15mmThe main Equipment Model:Vibrating feeder: ZSW-600 × 180 1Jaw...
450-550TPH Hard Stone Crushing Plant
This crushing plant is used to crush hard stone (like: Granite, basalt, river stone, etc.) from <1000mm down to about 0-5, 5-10, 10-20, 20-40mm (or...