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Click to add WeChatGold, as a precious metal, has always played a vital role in human history. It is not only a symbol of wealth, but also has a wide range of applications in jewelry making, electronics industry, aerospace and other fields. Desorption electrolysis is the process of purifying gold after gold selection. The gold adsorbed on the gold-carrying carbon is desorbed by a specific desorption liquid, and then the gold is deposited on the cathode by electrolysis in the electrolytic cell, thereby achieving efficient recovery and purification of gold.
So in the process, what are the equipment required for desorption electrolysis? Let's find out together!
The electrolytic cell is the core equipment in the gold desorption electrolysis process. Its function is to contain the electrolyte and the gold electrode and provide a stable environment for the electrolytic reaction. Since the electrolyte is usually corrosive, the electrolytic cell must be able to resist this corrosion to ensure the long-term stable operation of the equipment. Therefore, it is mostly made of corrosion-resistant materials such as polyvinyl chloride (PVC) and polypropylene (PP).
Generally, the size and shape of the electrolytic cell should be designed according to the production scale and process requirements to ensure that the gold electrode can be fully immersed in the electrolyte and facilitate operation and maintenance.
The analysis column is used to desorb gold from gold-loaded carbon. The principle is that the analysis column is filled with gold-loaded carbon. First, a desorption solution of a certain temperature and concentration (usually a mixed solution of sodium hydroxide and sodium cyanide or other suitable chemical reagents) is pumped into the analysis column at a specific flow rate. The desorption solution is fully in contact with the gold-loaded carbon. Under specific temperature and pressure conditions, the chemical substances in the desorption solution react chemically with the gold ions adsorbed on the gold-loaded carbon.
This chemical reaction destroys the adsorption force between the gold ions and the gold-loaded carbon, causing the gold ions to detach from the gold-loaded carbon and enter the desorption solution to form a gold-containing desorption solution. As the desorption liquid flows through the analysis column, the gold on the gold-loaded carbon is gradually desorbed, and the gold and the gold-loaded carbon are separated.
The electrolyte is an important component of the gold desorption electrolysis process, usually composed of a solution containing gold ions, such as potassium cyanide gold solution, gold chloride solution, etc. The role of the electrolyte is to provide gold ions and promote the electrolysis reaction. The electrolyte should have a certain stability, and be able to maintain a stable concentration of gold ions during the electrolysis process to ensure the continuous electrolysis reaction. The concentration of gold ions in the electrolyte should be adjusted according to the process requirements to ensure the efficiency and quality of gold analysis.
However, electrolytes are usually toxic, and corresponding safety measures should be taken during use to prevent harm to the human body and the environment.
Activated carbon is used in large quantities to adsorb gold ions during gold beneficiation. The carbon storage tank provides a centralized storage place for activated carbon to ensure that there is enough activated carbon to supply the entire beneficiation process. It can store activated carbon of different quantities and specifications according to production needs and process arrangements to meet the beneficiation operations at different stages.
During the beneficiation process, the demand for activated carbon in each link may change, but the carbon storage tank can play a buffering role to ensure that the supply of activated carbon will not be interrupted or fluctuated. This helps to maintain the stability and continuity of the beneficiation process and improve production efficiency and product quality.
The stirring device is an auxiliary equipment in the gold desorption electrolysis process. Its function is to stir the electrolyte to make the gold ions evenly distributed and improve the efficiency of the electrolysis reaction. The stirring device should be able to stir the electrolyte evenly to avoid the situation of excessively high or low local concentration, which affects the analysis efficiency of gold.
In the desorption electrolysis process of gold ore dressing, the electric heater is an important equipment. Its main purpose is to control the temperature during the desorption process. Generally, it needs to be heated to a specific problem to improve the desorption efficiency. The electric heater generates heat to raise the temperature of the desorption solution and maintain it within a suitable range. The appropriate temperature can promote the desorption reaction, making it easier for the gold ions on the gold-loaded carbon to detach and enter the desorption solution.
The filter device is an important equipment in the gold desorption electrolysis process. Its function is to filter impurities in the electrolyte and improve the purity of gold. Since various chemical agents and corrosive substances may be involved in the gold beneficiation process, the filter device must have good corrosion resistance. It is usually made of corrosion-resistant materials, such as stainless steel, special alloys, etc., to ensure long-term and stable operation of the equipment in harsh working environments.
In summary, gold desorption electrolysis equipment is the key to achieving gold purification and separation. These devices each play an important role and have different characteristics. In practical applications, appropriate equipment should be selected according to factors such as production scale, process requirements and gold content, and reasonable configuration and operation should be carried out to ensure the efficiency and quality of gold analysis. At the same time, attention should be paid to the maintenance and care of the equipment to extend the service life of the equipment and improve production efficiency.
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