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Click to add WeChatXinhai desorption electrolysis system is a gold extraction system and complete set of equipment that obtains gold mud from gold-loaded carbon through desorption and electrolysis under high temperature (150℃) and high pressure (0.5Mpa) conditions. This article mainly introduces the advantages of Xinhai's desorption electrolysis system.
The gold-loaded carbon is transported into the storage tank. After accumulating to a certain amount, the gold-loaded carbon is buffered and stored in the carbon storage tank and fed into the desorption column. The desorption liquid is prepared in the desorption liquid tank, solid sodium hydroxide is added, and it is heated and stirred to form a desorption liquid; then it is fed into the circulation system of "circulation pump-electric heater-desorption column-filter-electrolytic tank-circulation pump" through a circulation pump for "desorption" and "electrolysis" operations until the operation is completed. The desorption liquid is returned to the desorption liquid tank for repeated use, and the lean carbon in the desorption column is discharged by hydraulic transportation.
Xinhai's desorption electrolysis gold extraction system has the advantages of high efficiency, low consumption, fast speed and automatic control. The system has a high degree of automation, complete safety facilities, good technical indicators, simple and convenient operation, and stable and reliable operation.
High desorption rate: When the grade of gold-loaded carbon reaches 3000g/t, the desorption rate of the process can be as high as 96% or more. This means that most of the gold adsorbed on the gold-loaded carbon can be successfully desorbed and enter the subsequent electrolysis link, laying a solid foundation for high recovery rate gold extraction. Compared with other traditional desorption methods, the desorption electrolysis process can more fully release gold from the gold-loaded carbon, greatly improving the gold recovery efficiency.
Rapid electrolytic deposition: During the electrolysis process, due to the optimization of process conditions, the reduction and deposition rate of gold ions at the cathode is relatively fast. By accurately controlling parameters such as current density and electrolyte flow rate, a large amount of gold can be deposited in a relatively short time, further improving the efficiency of the overall process.
The time cost is greatly reduced: the desorption electrolysis temperature can be as high as 150℃, and the working pressure can be as high as 0.5MPa. Under such high temperature and high pressure synergy, the entire desorption electrolysis process can be completed within 12 hours, which is nearly 3 times shorter than the working time of the conventional system. This not only reduces the operating time of the equipment and reduces energy consumption, but also improves the turnover rate of the equipment, so that more batches of gold-loaded carbon can be processed in the same time, increasing production capacity.
Efficient energy utilization: The high temperature and high pressure environment enables the desorption and electrolysis reactions to proceed under more favorable kinetic conditions, accelerates the reaction rate, and reduces unnecessary energy waste. At the same time, the insulation design of the equipment and the optimization of process parameters ensure that the energy can act accurately on the desorption electrolysis process, improving the efficiency of energy utilization.
Optimization of desorption liquid composition: Sodium cyanide does not need to be added to the desorption liquid of this process, avoiding the use of highly toxic cyanide from the source. In the traditional cyanide gold extraction process, the use of cyanide not only poses serious safety risks, but also causes great harm to the environment and human body once it leaks, and the treatment cost of cyanide-containing wastewater is high. The cyanide-free characteristics of the desorption electrolysis process greatly reduce environmental risks and treatment costs.
No pollution discharge: Since cyanide is not used, no pollutants such as cyanide-containing wastewater and waste gas will be generated during the entire desorption electrolysis process. The desorption liquid and the residual liquid after electrolysis can be recycled after simple treatment, or treated according to conventional wastewater treatment standards, which will not pollute the surrounding environment and meet the requirements of today's green mining development.
Liquid level control system: The desorption electrolysis equipment is equipped with a high-precision liquid level control system that can monitor the liquid level changes in the desorption tank and electrolytic cell in real time. Through automated liquid level adjustment devices, such as electric valves, liquid level sensors, etc., ensure that the solution always maintains a suitable liquid level height during the desorption and electrolysis process to avoid affecting the process effect due to excessive or low liquid levels. For example, during the desorption process, the appropriate liquid level can ensure that the gold-loaded carbon is in full contact with the desorption liquid, while during the electrolysis process, a stable liquid level helps maintain the stability of the electric field and improve the gold deposition efficiency.
Temperature control system: Temperature is one of the key factors affecting the desorption and electrolysis effects. The temperature control system of the desorption electrolysis equipment can accurately control the temperature in the desorption tank and the electrolytic cell to keep it within the set process temperature range. Through the coordinated work of heating devices (such as electric heaters, steam heaters) and cooling devices (such as cooling water pipes, air-cooled radiators), as well as temperature sensors and controllers, the heating or cooling power can be automatically adjusted according to the deviation between the actual temperature and the set temperature to ensure temperature stability. For example, during the desorption process, a stable high temperature environment can promote the desorption reaction, while during the electrolysis process, a suitable temperature helps to improve the migration rate and deposition quality of gold ions.
Automatic control system: The entire desorption electrolysis process is uniformly managed and coordinated by an advanced automatic control system. The operator only needs to set various process parameters on the control interface, such as temperature, pressure, time, current density, etc., and the automatic control system can automatically complete various operations in the desorption and electrolysis process according to the preset program, including the start and stop of the equipment, the opening and closing of the valve, the addition of materials, etc. At the same time, the automatic control system also has fault diagnosis and alarm functions, which can monitor the operating status of the equipment in real time. Once an abnormal situation is found, it will immediately issue an alarm and take corresponding protective measures to ensure the safe and stable operation of the process, reduce manual operation errors, and improve production efficiency and product quality.
The above are some advantages and characteristics of desorption electrolysis gold extraction technology. In actual ore dressing plants, desorption electrolysis is not suitable for all gold ore dressing and gold extraction. Whether it is finally used and how the process is depends on the nature of the gold ore and the requirements for gold extraction. It is recommended to conduct ore dressing test analysis first, and design a suitable gold extraction process method according to the actual situation to achieve an ideal gold recovery rate.
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