The Application and Advantages of Reagents in Gold Mine Cyanidation Process

Gold mine cyanidation is a commonly used method in gold ore dressing, widely applied due to its high efficiency and economic characteristics. This article will provide a detailed introduction to the reagent application and its advantages in the Gold mine cyanidation process, helping you better understand this ore dressing technology.

I. Overview of Cyanidation

Cyanidation is an ore dressing method that leaches gold from ores through a cyanide solution. According to the properties of the ore and the requirements of ore dressing, cyanidation can be divided into two major categories: Agitation cyanidation and Percolation cyanidation. Agitation cyanidation is mainly used for treating flotation gold concentrates or all - slime cyanidation, while percolation cyanidation is mainly used for treating low - grade oxidized gold - bearing ores.

II. Application of Sodium Cyanide

Sodium cyanide is one of the most commonly used reagents in the cyanidation process. Its main function is to dissolve gold in the cyanide solution to form soluble gold - cyanide complexes. The use of Sodium cyanide is simple and effective. However, its toxicity and environmental pollution problems cannot be ignored. To address this, Xinhai Mining Technology Co., Ltd. has developed an environmentally friendly gold ore dressing agent to replace Sodium Cyanide in cyanide gold extraction. This ore dressing agent not only has the same usage method as sodium cyanide, but also has a faster recovery rate, higher leaching rate, and lower cost.

III. Reagent Application in Agitation Cyanidation

The gold extraction process of agitation cyanidation mainly includes two types of flowsheets: one is continuous counter - current washing, and the cyanidation - zinc replacement process (CCD method and CCF method) for recovering gold by replacing and precipitating with zinc powder (wire); the other is the filter - free cyanide carbon - in - pulp process (CIP method and CIL method) that directly adsorbs and recovers gold from the cyanide pulp using activated carbon without filtration and washing. In these processes, sodium cyanide or the environmentally friendly gold ore dressing agent is the key reagent. In addition, auxiliary reagents such as zinc powder and activated carbon are also required.

IV. Reagent Application in Percolation Cyanidation

Percolation cyanidation is suitable for placer deposits and loose and porous materials. Common processes include tank leaching and heap leaching. The heap leaching method has a low production cost, can be of various scales, and has strong adaptability. During the heap leaching process, the cyanide leaching solution leaches gold from the ore through spraying or percolation. The leaching solution is recycled multiple times and sprayed on the ore heap repeatedly. Then, the leaching solution is collected and treated by ion - exchange resin, activated carbon adsorption, or zinc powder (wire) replacement. Sodium cyanide or the environmentally friendly gold ore dressing agent plays a key role in this process.

V. Advantages of Environmentally Friendly Ore Dressing Agents

In view of the drawbacks of sodium cyanide and the current environmental requirements, Xinhai Mining Technology Co., Ltd. has successfully developed an environmentally friendly gold ore dressing agent. This ore dressing agent can not only effectively replace sodium cyanide, but also has the following advantages:

1. Faster recovery: The environmentally friendly ore dressing agent has a faster leaching speed, which can leach gold from the ore in a short time and improve production efficiency.

2. Higher leaching rate: The leaching rate of the environmentally friendly ore dressing agent is higher than that of traditional sodium cyanide, which can recover gold from the ore more fully and improve resource utilization.

3. Lower cost: The use cost of the environmentally friendly ore dressing agent is lower than that of sodium cyanide, which can effectively reduce production costs and improve economic benefits.

4. Environmentally friendly and pollution - free: The environmentally friendly ore dressing agent is non - toxic and harmless, friendly to the environment, meets the current environmental requirements, and reduces environmental pollution.

VI. Conclusion

The reagent application in the gold mine cyanidation process is a key link in the ore dressing technology. Sodium cyanide and the environmentally friendly gold ore dressing agent play important roles in different cyanidation processes. With the continuous progress of technology and the increasing emphasis on environmental protection, the development and application of more efficient and environmentally friendly reagents will be an important direction for the future development of the gold mining industry.