阅读说明：本技术 一种黄金解吸过程中环保降温系统及控制方法 (Environment-friendly cooling system in gold desorption process and control method ) 是由 李金炼 罗荔阳 赵楚 哏岩放 赵丽坤 于 2020-12-25 设计创作，主要内容包括：本发明是一种黄金解吸过程中环保降温系统及控制方法,该黄金解吸过程中环保降温系统包括电解槽、循环泵、解吸液槽、循环水槽、解吸柱、空压机,以及上述部件的连接管道和控制阀门；还包括低温冷却液循环设备、低温水供水通道、低温排水通道、冷气制冷设备、冷气进气通道和冷气排气通道。本发明还针对上述的改进设计了系统控制方法。本发明通过低温冷却液循环设备与冷气制冷设备共同实现了黄金解吸过程中的快速环保降温,防止有害气体挥发的,便于解吸过程中重金属的冷凝回收,同时防止电解槽内部温度与室内温度因温差而形成烟雾环境的产生,降低生产周期,改善了生产环境。(The invention relates to an environment-friendly cooling system in a gold desorption process and a control method, wherein the environment-friendly cooling system in the gold desorption process comprises an electrolytic bath, a circulating pump, a desorption liquid bath, a circulating water bath, a desorption column, an air compressor, a connecting pipeline of the components and a control valve; the system also comprises low-temperature cooling liquid circulating equipment, a low-temperature water supply channel, a low-temperature drainage channel, cold air refrigerating equipment, a cold air inlet channel and a cold air exhaust channel. The present invention also designs a system control method for the above improvement. The invention realizes the rapid environmental protection cooling in the gold desorption process through the low-temperature cooling liquid circulation equipment and the cold air refrigeration equipment, prevents harmful gas from volatilizing, is convenient for condensing and recovering heavy metal in the desorption process, simultaneously prevents the smoke environment generated by the temperature difference between the internal temperature of the electrolytic cell and the indoor temperature, reduces the production period and improves the production environment.)

1. An environment-friendly cooling system in gold desorption process comprises an electrolytic bath, a circulating pump, a desorption liquid bath, a circulating water tank, a desorption column, an air compressor, and connecting pipelines and control valves of the components; the method is characterized in that: the environment-friendly cooling system in the gold desorption process further comprises low-temperature cooling liquid circulating equipment, a low-temperature water supply channel, a low-temperature drainage channel, cold air refrigerating equipment, a cold air inlet channel and a cold air exhaust channel; one end of the low-temperature cooling liquid circulating equipment is communicated with the bottom of the circulating water tank through a low-temperature water supply channel, the other end of the low-temperature cooling liquid circulating equipment is communicated with a liquid inlet pipeline of the electrolytic tank through the low-temperature water supply channel, a low-temperature water supply valve is arranged at the position, close to the circulating water tank, of the low-temperature water supply channel, and a low-temperature water inlet valve is arranged at the position; one end of the low-temperature drainage channel is communicated with a liquid outlet pipeline of the electrolytic tank, the other end of the low-temperature drainage channel is communicated with the bottom of the circulating water tank, and a low-temperature drainage valve is arranged on the low-temperature drainage channel; one end of the cold air inlet channel is connected with cold air refrigerating equipment, the other end of the cold air inlet channel is communicated with a cold air inlet of the electrolytic cell, and the cold air inlet is arranged above the electrolytic cell and is provided with a cold air inlet valve; one end of the cold air exhaust channel is communicated with a cold air exhaust port of the electrolytic cell, the other end of the cold air exhaust channel is communicated with the desorption liquid tank, the cold air exhaust port is arranged below the electrolytic cell, and a cold air exhaust valve is arranged on the cold air exhaust port.

2. The environment-friendly cooling system for gold desorption process according to claim 1, characterized in that: and a liquid check valve is arranged on a low-temperature water supply channel communicated with the liquid inlet pipeline of the electrolytic cell by the low-temperature cooling liquid circulating equipment.

3. The environment-friendly cooling system in the gold desorption process as claimed in claim 2, wherein: and a low-temperature water supply channel communicated with the liquid inlet pipeline of the electrolytic cell is provided with a flowmeter, and the flowmeter is positioned between the liquid check valve and the low-temperature water inlet valve.

4. The environment-friendly cooling system for gold desorption process according to claim 1, characterized in that: and a temperature control meter and a pressure gauge are arranged on a low-temperature water supply channel communicated with the liquid inlet pipeline of the electrolytic cell by the low-temperature cooling liquid circulating equipment.

5. The environment-friendly cooling system for gold desorption process according to claim 1, characterized in that: and a thermometer is also arranged on the cold air exhaust channel.

6. A control method, which utilizes the environment-friendly cooling system in the gold desorption process of any one of claims 1 to 5, and is characterized in that: the method comprises the following steps:

closing a desorption liquid inlet valve, an electrolysis liquid inlet valve and an electrolysis liquid outlet valve, opening a liquid discharge valve, discharging high-temperature desorption liquid to a circulating water tank, closing the liquid discharge valve after the desorption liquid is discharged, opening a front valve of a liquid supplementing pump and a liquid supplementing valve, starting a liquid supplementing circulating pump to cool and supplement water, stopping the liquid supplementing circulating pump after the water supplement is finished, closing the front valve of the liquid supplementing pump and the liquid supplementing valve, opening the desorption liquid inlet valve, the electrolysis liquid inlet valve and the electrolysis liquid outlet valve, starting the circulating pump, cooling an electrolysis bath by circulating solution at natural temperature, and opening a pressure reducing valve to relieve the pressure of the electrolysis bath after the temperature of the solution in the electrolysis bath is reduced to be lower than the normal-pressure boiling point temperature;

stopping the circulating pump, closing a pump front valve and a filter valve, opening a low-temperature water supply valve, a low-temperature water inlet valve and a low-temperature water drain valve, starting low-temperature coolant circulating equipment, and circulating low-temperature water to cool the electrolytic bath again;

step three, starting cold air refrigerating equipment at the same time, opening a cold air inlet valve and a cold air exhaust valve, and cooling;

stopping the low-temperature cooling liquid circulating equipment and closing the low-temperature water supply valve, the low-temperature water inlet valve and the low-temperature drain valve when the temperature of the solution in the electrolytic bath is reduced to be lower than the daily indoor temperature;

and step five, closing the low-temperature cooling liquid circulating equipment for 10-30 minutes, closing the cold air refrigerating equipment, closing the cold air inlet valve and the cold air exhaust valve, and finishing cooling.

Technical Field

The invention relates to the technical field of gold desorption, in particular to an environment-friendly cooling system in a gold desorption process and a control method.

Background

In the existing cooling process of gold desorption, a solution with a circulating natural temperature is generally adopted to cool an electrolytic cell, in order to ensure the temperature in the desorption process, equipment and pipelines generally adopt heat insulation materials in the high-temperature and high-pressure desorption process, the solution with the natural temperature is utilized to cool the electrolytic cell, the cooling speed is slow, and after the temperature is reduced to a certain temperature, the solution with the circulating natural temperature of the equipment generates power consumption, so that the effective reduction of the temperature of the electrolytic cell is difficult to realize. The relatively high temperature of the solution in the electrolytic cell is easy to volatilize harmful gas, and when the electrolytic cell is opened, smoke is easy to generate, so that the operation of subsequent operators is not facilitated, the working environment is influenced, the working efficiency is reduced, and the desorption period is prolonged.

Disclosure of Invention

In order to solve the problems, the invention provides an environment-friendly cooling system in a gold desorption process and a control method.

The technical scheme adopted by the invention is as follows:

an environment-friendly cooling system in gold desorption process comprises an electrolytic bath, a circulating pump, a desorption liquid bath, a circulating water tank, a desorption column, an air compressor, and connecting pipelines and control valves of the components; the environment-friendly cooling system in the gold desorption process further comprises low-temperature cooling liquid circulating equipment, a low-temperature water supply channel, a low-temperature drainage channel, cold air refrigerating equipment, a cold air inlet channel and a cold air exhaust channel; one end of the low-temperature cooling liquid circulating equipment is communicated with the bottom of the circulating water tank through a low-temperature water supply channel, the other end of the low-temperature cooling liquid circulating equipment is communicated with a liquid inlet pipeline of the electrolytic tank through the low-temperature water supply channel, a low-temperature water supply valve is arranged at the position, close to the circulating water tank, of the low-temperature water supply channel, and a low-temperature water inlet valve is arranged at the position; one end of the low-temperature drainage channel is communicated with a liquid outlet pipeline of the electrolytic tank, the other end of the low-temperature drainage channel is communicated with the bottom of the circulating water tank, and a low-temperature drainage valve is arranged on the low-temperature drainage channel; one end of the cold air inlet channel is connected with cold air refrigerating equipment, the other end of the cold air inlet channel is communicated with a cold air inlet of the electrolytic cell, and the cold air inlet is arranged above the electrolytic cell and is provided with a cold air inlet valve; one end of the cold air exhaust channel is communicated with a cold air exhaust port of the electrolytic cell, the other end of the cold air exhaust channel is communicated with the desorption liquid tank, the cold air exhaust port is arranged below the electrolytic cell, and a cold air exhaust valve is arranged on the cold air exhaust port.

Preferably, a liquid check valve is arranged on a low-temperature water supply channel communicated with the liquid inlet pipeline of the electrolytic cell by the low-temperature cooling liquid circulating equipment.

Preferably, a low-temperature water supply channel communicated with the liquid inlet pipeline of the electrolytic bath is provided with a flow meter, and the flow meter is positioned between the liquid check valve and the low-temperature water inlet valve.

Preferably, a temperature control meter and a pressure gauge are arranged on a low-temperature water supply channel communicated with the liquid inlet pipeline of the electrolytic cell by the low-temperature cooling liquid circulating equipment.

Preferably, a thermometer is further arranged on the cold air exhaust channel.

A control method utilizes the environment-friendly cooling system in the gold desorption process, and comprises the following steps: closing a desorption liquid inlet valve, an electrolysis liquid inlet valve and an electrolysis liquid outlet valve, opening a liquid discharge valve, discharging high-temperature desorption liquid to a circulating water tank, closing the liquid discharge valve after the desorption liquid is discharged, opening a front valve of a liquid supplementing pump and a liquid supplementing valve, starting a liquid supplementing circulating pump to cool and supplement water, stopping the liquid supplementing circulating pump after the water supplement is finished, closing the front valve of the liquid supplementing pump and the liquid supplementing valve, opening the desorption liquid inlet valve, the electrolysis liquid inlet valve and the electrolysis liquid outlet valve, starting the circulating pump, cooling an electrolysis bath by circulating solution at natural temperature, and opening a pressure reducing valve to relieve the pressure of the electrolysis bath after the temperature of the solution in the electrolysis bath is reduced to be lower than the normal-pressure boiling point temperature; stopping the circulating pump, closing a pump front valve and a filter valve, opening a low-temperature water supply valve, a low-temperature water inlet valve and a low-temperature water drain valve, starting low-temperature coolant circulating equipment, and circulating low-temperature water to cool the electrolytic bath again; step three, starting cold air refrigerating equipment at the same time, opening a cold air inlet valve and a cold air exhaust valve, and cooling; step five, after closing the low-temperature cooling liquid circulation equipment for 10 to 30 minutes, closing the cold air refrigerating equipment, and closing the cold air inlet valve and the cold air exhaust valve, thus finishing the temperature reduction.

The invention has the beneficial effects that:

the core of the invention is to establish a control flow for inhibiting the volatilization of harmful gases in the gold desorption process, facilitating the collection of the harmful gases and quickly cooling, and mainly configuring and increasing necessary hardware and designing a new flow mode in the flow.

Aiming at the problems of the existing cooling process control process in the gold desorption process, through research, the invention designs a new environment-friendly cooling process control process in the gold desorption process, solves the problems of low cooling speed, difficulty in controlling the cooling temperature to be lower than the environment in a production room and volatilization of harmful gas when an electrolytic cell is stopped to discharge gold mud in the gold desorption process, and has simple structure and easy popularization. The novel method realizes rapid cooling in gold desorption process through low-temperature cooling liquid circulation equipment and cold air refrigeration equipment, ensures the equipment temperature when the electrolytic cell is opened to discharge gold mud, effectively prevents the generation of smoke environment caused by temperature difference between the internal temperature of the electrolytic cell and the indoor temperature while preventing harmful gas from volatilizing, reduces production period and improves production environment.

Drawings

FIG. 1 is a flow chart of a cooling system in a conventional gold desorption process;

FIG. 2 is a flow chart of a cooling system in the gold desorption process according to the present invention.

In the figures 1-2, 1-electrolytic bath, 2-circulating pump, 3-desorption liquid tank, 4-circulating water tank, 5-desorption column, 6-air compressor, 7-low temperature cooling liquid circulating equipment, 8-low temperature water supply channel, 9-low temperature drainage channel, 10-cold air refrigerating equipment, 11-cold air inlet channel, 12-cold air exhaust channel, 13-electrolytic bath inlet pipe, 14-low temperature water supply valve, 15-low temperature inlet valve, 16-low temperature drain valve, 17-cold air inlet valve, 18-cold air exhaust valve, 19-liquid check valve, 20-flowmeter, 21-temperature control meter, 22-pressure meter, 23-thermometer, 24-desorption liquid inlet valve, 25-electrolysis liquid inlet valve, 26-electrolysis liquid outlet valve, 27-liquid outlet valve, 28-liquid supplementing pump front valve, 29-liquid supplementing valve, 30-liquid supplementing circulating pump, 31-pressure reducing valve, 32-pump front valve, 33-filter valve and 34-electrolysis bath liquid outlet pipeline.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings of the embodiments of the present invention. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be obtained by a person skilled in the art without inventive effort based on the embodiments of the present invention, are within the scope of the present invention.

As shown in figure 1, the traditional cooling system for gold desorption comprises an electrolytic bath 1, a circulating pump 2, a desorption liquid tank 3, a circulating water tank 4, a desorption column 5, an air compressor 6, and connecting pipelines and control valves of the above components. The cooling system in the traditional gold desorption process has a low cooling speed in the gold desorption process, and the cooling temperature is difficult to control to be lower than the environment in a production room, so that harmful gas volatilization exists when the electrolytic bath 1 is stopped to discharge gold mud.

On the basis of a cooling system in the traditional gold desorption process, as shown in fig. 2, the environment-friendly cooling system in the gold desorption process designed by the invention further comprises low-temperature cooling liquid circulating equipment 7, a low-temperature water supply channel 8, a low-temperature drainage channel 9, cold air refrigerating equipment 10, a cold air inlet channel 11 and a cold air exhaust channel 12. One end of the low-temperature cooling liquid circulating equipment 7 is communicated with the bottom of the circulating water tank 4 through a low-temperature water supply channel 8, the other end of the low-temperature cooling liquid circulating equipment is communicated with an electrolytic tank liquid inlet pipeline 13 through the low-temperature water supply channel 8, a low-temperature water supply valve 14 is arranged at the position, close to the circulating water tank 4, of the low-temperature water supply channel 8, and a low-temperature water inlet valve 15 is arranged at the position, close to. One end of the low-temperature drainage channel 9 is communicated with an electrolytic bath liquid outlet pipeline 34, the other end is communicated with the bottom of the circulating water tank 4, and a low-temperature drainage valve 16 is arranged on the low-temperature drainage channel. One end of the cold air inlet channel 11 is connected with a cold air refrigerating device 10, the other end of the cold air inlet channel is communicated with a cold air inlet of the electrolytic cell 1, the cold air inlet of the electrolytic cell 1 is arranged above the electrolytic cell 1, and a cold air inlet valve 17 is arranged on the cold air inlet channel. One end of the cold air exhaust channel 12 is communicated with the cold air exhaust port of the electrolytic cell 1, the other end is communicated with the desorption liquid tank 3, the cold air exhaust port of the electrolytic cell 1 is arranged below the electrolytic cell 1, and the cold air exhaust channel 12 is provided with a cold air exhaust valve 18.

The principle of the environment-friendly cooling system in the gold desorption process is that the low-temperature cooling liquid circulating equipment 7 and the cold air refrigerating equipment 10 are utilized to realize rapid cooling in the gold desorption process. The whole gold desorption and electrowinning method gold collection system usually adopts heat insulation materials, the cooling speed is slow, and after the temperature is reduced to a certain temperature, because the solution of the equipment circulating natural temperature generates power consumption, the effective reduction of the temperature of the electrolytic cell 1 is difficult to realize, so the low-temperature cooling liquid and the cold air refrigerating equipment 10 are required to be adopted to effectively and fully reduce the temperature. When the temperature of the solution in the electrolytic cell 1 is reduced to be lower than the daily indoor temperature by using the low-temperature cooling liquid, the low-temperature cooling liquid circulating equipment 7 is stopped, the cold air refrigerating equipment 10 is continuously used for fully discharging harmful gas generated in the electrolytic process, a cold air inlet of the electrolytic cell 1 is arranged above the electrolytic cell 1, and a cold air exhaust port is arranged below the electrolytic cell 1, so that heavy metal in the harmful gas in the high-temperature desorption process is condensed and reduced to the bottom of the electrolytic cell 1, the whole electrolytic cell 1 is fully utilized to be in a cylindrical side-placing mode, and the heavy metal is condensed and reduced in the process of being concentrated on the lowest circular arc bottom surface in the electrolytic cell 1, thereby being convenient for uniform recovery and treatment after the electrolytic. Meanwhile, the cold air refrigeration equipment 10 is utilized to control the temperature difference between the internal temperature of the electrolytic cell 1 and the production environment temperature to be 3-8 ℃, and when the electrolytic cell 1 is opened, the smog effect generated by the temperature difference and the pungent smell generated in the desorption process are eliminated, so that the controllability and the rapidity of environment-friendly cooling and cooling in the high-temperature desorption process are realized.

On the basis of the technical scheme, in order to ensure the low-temperature cooling liquid flow direction of the low-temperature water supply channel 8 communicated with the electrolytic bath liquid inlet pipeline 13 by the low-temperature cooling liquid circulating equipment 7, a liquid check valve 19 is arranged on the low-temperature water supply channel 8 communicated with the electrolytic bath liquid inlet pipeline 13 by the low-temperature cooling liquid circulating equipment 7.

In addition, in order to facilitate an operator of the environment-friendly cooling system in the gold desorption process to check the flow, the temperature and the pressure of the low-temperature water supply channel 8 at any time, a flow meter 20 is further arranged on the low-temperature water supply channel 8, which is communicated with the electrolytic bath liquid inlet pipeline 13, of the low-temperature cooling liquid circulation device 7, and the flow meter 20 is positioned between the liquid check valve 19 and the low-temperature water inlet valve 15. And a temperature control meter 21 and a pressure meter 22 are also arranged on the low-temperature water supply channel 8 communicated with the electrolytic bath liquid inlet pipeline 13 by the low-temperature cooling liquid circulating equipment 7. Meanwhile, a thermometer 23 can be additionally arranged on the cold air exhaust channel 12 so as to conveniently check the temperature of the cold air exhaust channel 12.

After the low-temperature cooling liquid circulating equipment 7, the low-temperature water supply channel 8, the low-temperature drainage channel 9, the cold air refrigerating equipment 10, the cold air inlet channel 11 and the cold air exhaust channel 12 are added in the environment-friendly cooling system in the gold desorption process, the control method is carried out according to the following steps:

closing a desorption liquid inlet valve 24, an electrolysis liquid inlet valve 25 and an electrolysis liquid outlet valve 26, opening a liquid outlet valve 27, discharging high-temperature desorption liquid to a circulating water tank 4, closing the liquid outlet valve 27 after the desorption liquid is discharged, opening a liquid supplementing pump front valve 28 and a liquid supplementing valve 29, starting a liquid supplementing circulating pump 30 to cool and supplement water, stopping the liquid supplementing circulating pump 30 after the water supplement is finished, closing the liquid supplementing pump front valve 28 and the liquid supplementing valve 29, opening the desorption liquid inlet valve 24, the electrolysis liquid inlet valve 25 and the electrolysis liquid outlet valve 26, starting a circulating pump 2, circulating natural-temperature solution to cool an electrolytic tank 1, and opening a pressure reducing valve 31 to release pressure of the electrolytic tank 1 after the temperature of the solution in the electrolytic tank 1 is reduced to be lower than the normal-pressure boiling point temperature. The first step has the functions of: the existing gold-loaded carbon desorption process is carried out at the high temperature of 150 ℃ and the air pressure of more than 0.5Mpa, the desorption liquid inlet valve 24, the electrolysis liquid inlet valve 25 and the electrolysis liquid outlet valve 26 are closed firstly, the air pressure and the temperature in the electrolytic bath 3 are kept stable, the high-temperature electrolytic solution in the desorption column 5 is discharged, and the rapid cooling is convenient. After the high-temperature electrolytic solution is discharged, replenishing water to cool the gold-loaded carbon in the desorption column, and then gradually reducing the temperature of the electrolytic cell by using the aqueous solution in the circulating desorption column 5. In order to avoid cold and hot water collision and violent reaction, the gold mud originally electrodeposited and precipitated rolls, the water replenishing in the desorption column is influenced by the residual heat of the gold-loaded carbon in the desorption column 5, a certain temperature exists, gradual cooling can be realized, the water replenishing is replenished to the top of the desorption column 5 from the bottom of the desorption column 5, the water solution entering the electrolytic tank 3 after the temperature of the water solution is cooled in the electrolytic tank 3 at the most can be realized, the gradual cooling is realized, the gold mud in the electrolytic tank is prevented from rolling, and the precious metal caused by rolling, floating and loss are avoided. In order to ensure that the whole solution in the electrolytic cell is in a stable state in the process of reducing the temperature of the whole high temperature from 150 ℃ to the normal-pressure boiling point temperature, the pressure reducing valve 31 can be opened to release the pressure of the electrolytic cell 1 only after the temperature of the solution in the electrolytic cell 1 is reduced to be lower than the normal-pressure boiling point temperature. The gradual cooling avoids the rapid change of the cold and the heat of the equipment, and prolongs the service life of the equipment.

And step two, stopping the circulating pump 2, closing the pre-pump valve 32 and the filter valve 33, opening the low-temperature water supply valve 14, the low-temperature water inlet valve 15 and the low-temperature water discharge valve 16, starting the low-temperature cooling liquid circulating equipment 7, and circulating low-temperature water to cool the electrolytic cell 1 again. The second step has the following functions: when the temperature of the solution in the electrolytic cell 1 is reduced to a temperature lower than the normal-pressure boiling point, the whole equipment adopts a heat-insulating material, and meanwhile, the water solution in the circulating desorption column 5 generates power consumption, and the original water solution cannot be quickly and effectively cooled, so that the circulating pump 2 is stopped, the pre-pump valve 32 and the filter valve 33 are closed, the low-temperature water supply valve 14, the low-temperature water inlet valve 15 and the low-temperature water drain valve 16 are opened, the low-temperature cooling liquid circulating equipment 7 is started, and the circulating low-temperature water is used for cooling the electrolytic.

And step three, simultaneously starting the cold air refrigerating equipment 10, and opening the cold air inlet valve 17 and the cold air exhaust valve 18 to cool. The third step has the following functions: to accelerate the cooling, the cold-air cooling device 10 is started at the same time. Accelerate the cooling, also do benefit to the harmful gas that produces in the discharge electrolysis process simultaneously, the heavy metal of the inside top of 3 inside of electrolytic cell is retrieved in the condensation simultaneously, for example mercury etc. also avoid causing the heavy metal because of the loss of pressure loses the temperature, for example mercury vapour is attached to corresponding pipeline. The air inlet of the electrolytic cell 1 is arranged above the electrolytic cell 1, and the air outlet of the air outlet is arranged below the electrolytic cell 1, so that heavy metal in harmful gas in the high-temperature desorption process is condensed and reduced to the bottom of the electrolytic cell 1, the whole electrolytic cell 1 is in a cylindrical side-placing mode, and the heavy metal is condensed and reduced in the process, is concentrated on the lowest circular arc bottom surface in the electrolytic cell 1, and is convenient for uniform recovery processing after the electrolytic cell 1 is opened.

And step four, stopping the low-temperature cooling liquid circulating equipment 7 and closing the low-temperature water supply valve 14, the low-temperature water inlet valve 15 and the low-temperature drain valve 16 after the temperature of the solution in the electrolytic cell 1 is reduced to be lower than the daily indoor temperature.

And step five, closing the low-temperature cooling liquid circulating equipment 7, closing the cold air refrigerating equipment 10 after 10-30 minutes, closing the cold air inlet valve 17 and the cold air exhaust valve 18, and finishing cooling. Closing the low-temperature cooling liquid circulation equipment, keeping the cold air refrigerating equipment 10 working for 10-30 minutes, fully discharging gas generated in the electrolytic cell 3 in the cold and hot alternative cooling process, controlling the temperature difference between the internal temperature of the electrolytic cell 1 and the production environment temperature to be 3-8 ℃, and eliminating smoke effect generated due to the temperature difference and pungent smell generated in the desorption process when the electrolytic cell 1 is opened.

It should be noted that the cooling medium of the environment-friendly cooling system in the gold desorption process can adopt low-temperature water or low-temperature cooling liquid. The low-temperature cooling liquid circulating equipment can adopt cooling circulating pumps and other similar commercial products; the cold air refrigerating equipment can adopt the similar commercial products such as an air cooler, a compressor and the like.