Electro metallurgical system and temperature control method thereof

Abstract

The application provides an electrolytic metallurgy system and a temperature control method thereof. The electrolytic metallurgy system comprises an electrolytic cell and a partition, the partition is arranged in the electrolytic cell and separates the electrolytic cell into a first chamber and a second chamber, and the partition can move in the electrolytic cell along a first direction to adjust the volumes of the first chamber and the second chamber. The electrolytic metallurgy system and the temperature control method thereof can solve the problem that the existing electrolytic metallurgy system cannot flexibly adjust the chamber volume according to the material inventory in the chamber, resulting in a long production cycle and low production efficiency.

Description

Technical Field

[0001] This invention relates to the technical field of electrolytic metallurgical systems and their temperature control methods, and more specifically, to an electrolytic metallurgical system and its temperature control method. Background Technology

[0002] Electrolytic metallurgy is a core process in the fields of non-ferrous metal smelting, metal purification, and new material preparation. It relies on electrolytic reactions to achieve the directional precipitation of metal ions and the separation and purification of materials. This process directly determines the purity of metal products, production capacity, and smelting energy consumption, and is a key link in ensuring a stable supply of raw materials for basic industries.

[0003] Currently, conventional electrolytic metallurgical systems typically use electrolytic cells divided into two main chambers: an electrolysis chamber and a molten metal collection chamber, with relatively fixed volumes in both chambers. Therefore, existing electrolytic metallurgical systems cannot increase the contact area between the material and the heating device to improve heating efficiency, or increase the heat exchange area with air to improve cooling efficiency, thus failing to achieve a faster temperature regulation rate. This results in long production cycles and low production efficiency in conventional electrolytic metallurgical systems. Summary of the Invention

[0004] The main objective of this invention is to provide an electrolytic metallurgical system and its temperature control method, which can solve the problem that existing electrolytic metallurgical systems cannot flexibly adjust the chamber volume according to the material inventory in the chamber, resulting in long production cycles and low production efficiency.

[0005] To achieve the above objectives, according to one aspect of the present invention, an electrolytic metallurgical system is provided, including an electrolytic cell and a partition, wherein the partition is disposed within the electrolytic cell and divides the electrolytic cell into a first chamber and a second chamber, and the partition is movable within the electrolytic cell in a first direction to adjust the volume of the first chamber and the second chamber.

[0006] Furthermore, the electrolytic metallurgical system includes a drive assembly, which includes a screw and a drive device. The screw extends vertically, the drive device is located at the top of the screw, and a slider is provided on the screw. The slider is threadedly engaged with the screw, and a connecting rod is provided on the slider. The end of the connecting rod away from the slider is hinged to the partition.

[0007] Furthermore, the electrolytic metallurgical system also includes a temperature control component, which is installed in both the first and second chambers. The temperature control component includes a heating device and a cooling device.

[0008] Furthermore, the heating device includes an AC heating section and a resistance heating section, and / or the cooling device includes a liquid cooling section, the two ends of which are connected to the electrolytic cell, one end being a cooling medium inlet and the other end being a cooling medium outlet. Both the cooling medium inlet and the cooling medium outlet are connected to the outside of the electrolytic cell, and the liquid cooling section can contain the cooling medium.

[0009] Furthermore, an air inlet pipe is provided on the first chamber and / or the second chamber, and the cooling device also includes an air-cooling section. The air outlet of the air-cooling section is connected to the air inlet pipe, and the air-cooling section can blow air into the first chamber and / or the second chamber through the air inlet pipe.

[0010] Furthermore, the electrolytic cell also includes a top cover, and there is a connecting channel between the partition and the top cover. The connecting channel connects the first chamber and the second chamber. An exhaust pipe is provided on the top cover, and the first chamber and the second chamber are connected to the outside through the exhaust pipe.

[0011] According to another aspect of the present invention, a temperature control method is also provided, which uses the above-described electrolytic metallurgical system to control the electrolytic metallurgical temperature. The temperature control method includes: setting a target temperature. Obtain the actual temperature According to the actual temperature With target temperature The difference Select the temperature control mode; adjust the heating power of the heating device according to the temperature control mode. and the cooling power of the cooling device .

[0012] Furthermore, based on the actual temperature With target temperature The difference The steps to select the temperature control mode include: setting the target temperature. and temperature dead zone Obtain the actual temperature ; Calculate the actual temperature With target temperature Temperature difference between ;when When the electrolytic metallurgical system enters cooling mode; when When, turn off the heating and cooling devices; when At that time, the electrolytic metallurgical system is controlled to enter the heating mode.

[0013] Furthermore, when the electrolytic metallurgical system enters the heating mode, the heating power of the heating device is adjusted according to the temperature control mode. The steps include: setting a low-temperature start-up threshold. Low temperature deceleration threshold and heating stop threshold When the heating device includes an AC heating section and a resistance heating section, the heating power... It has three heating stages: rapid heating, slow heating, and alternating heating.

[0014] when At that time, heating power During the rapid heating phase, both the AC heating unit and the resistance heating unit operate at maximum power simultaneously, maximizing the heating power of the heating device. Equal to maximum heating power Maximum heating power satisfy: ,in, This is the maximum power of the AC heating section. This represents the maximum power of the resistance heating element;

[0015] when At that time, heating power During the slow heating phase, the heating power is... satisfy: ;

[0016] when At that time, heating power During the alternating heating maintenance phase, the heating power is... satisfy: Return to get the actual temperature The steps.

[0017] Furthermore, when the electrolytic metallurgical system enters the cooling mode, the cooling power of the cooling device is adjusted according to the temperature control mode. The steps include: setting a high-temperature start-up threshold. High temperature deceleration threshold and water cooling shutdown threshold When the cooling device includes a liquid cooling section and an air cooling section, the cooling power... It has three cooling stages: rapid cooling, slow cooling, and air cooling.

[0018] when At that time, cooling power During the rapid cooling phase, both the liquid cooling unit and the air cooling unit operate at maximum power simultaneously, maximizing the cooling capacity of the cooling system. Equal to maximum cooling power Maximum cooling power satisfy: ,in, This represents the maximum flow rate of the liquid cooling section. The specific heat capacity at constant pressure of the coolant in the liquid cooling section. The efficiency coefficient of the liquid cooling section. This is the maximum wind speed of the air-cooled section. The effective heat exchange area of ​​the air-cooled section;

[0019] when At that time, cooling power During the slow cooling phase, the cooling power of the cooling device... satisfy: ;

[0020] when At that time, cooling power During the air-cooling maintenance phase, the liquid cooling section is emptied and stops working, leaving only the air-cooling section operating. At this time, the cooling power of the cooling device... satisfy: Return to get the actual temperature The steps.

[0021] Furthermore, the temperature control method also includes: adjusting the flow rate of the cooling medium in the liquid cooling section according to the temperature control mode. Internal cooling medium flow rate The adjustment follows the formula below:

[0022] .

[0023] Furthermore, the temperature control method also includes: adjusting the output fan speed of the air-cooled unit according to the temperature control mode. Output wind speed The adjustment follows the formula below:

[0024] .

[0025] By applying the technical solution of this invention, a movable partition can be provided in a first direction, allowing the partition to adjust the volume of the first and second chambers. When one chamber contains more material than the other, the volume of the chamber with less material can be reduced by moving the partition, thereby increasing the liquid level in that chamber and increasing the contact area between the material and the heating device, thus improving heating efficiency. Alternatively, when the material temperature in one chamber is high and needs to be cooled, the volume of that chamber can be increased by moving the partition, thereby increasing the contact area between the material and air. Combined with an air-cooling device, this significantly improves the cooling efficiency of the material in that chamber. Therefore, the temperature adjustment rate can be increased, thereby shortening the time required to adjust the material temperature in the chamber to the target temperature during production, thus shortening the production cycle and improving production efficiency. Attached Figure Description

[0026] The accompanying drawings, which form part of this specification, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0027] Figure 1 A front view of the electrolytic metallurgical system of the present invention is shown;

[0028] Figure 2 A top view of the electrolytic metallurgical system of the present invention is shown;

[0029] Figure 3 A side view of the electrolytic metallurgical system of the present invention is shown;

[0030] Figure 4 A front view of the drive assembly of an embodiment of the electrolytic metallurgical system of the present invention is shown;

[0031] Figure 5 A schematic diagram of the steps of the temperature control method of the present invention is shown;

[0032] Figure 6 The temperature control method of the present invention is shown based on the actual temperature. With target temperature The difference A diagram illustrating the steps to select the temperature control mode.

[0033] The above figures include the following reference numerals:

[0034] 1. Electrolytic cell; 11. First chamber; 12. Second chamber; 13. Inlet pipe; 14. Exhaust pipe; 2. Separator; 3. Drive assembly; 31. Screw; 32. Drive device; 33. Slider; 34. Connecting rod; 411. AC heating section; 412. Resistance heating section; 421. Liquid cooling section; 4211. Cooling medium inlet; 4212. Cooling medium outlet; 422. Air cooling section; 43. Temperature sensor; 5. Host computer; 6. Switch. Detailed Implementation

[0035] It should be noted that, unless otherwise specified, the embodiments and features described in the present invention can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0036] See also Figures 1 to 6 As shown, the present invention provides an electrolytic metallurgical system, including an electrolytic cell 1 and a partition 2. The partition 2 is disposed in the electrolytic cell 1 and divides the electrolytic cell 1 into a first chamber 11 and a second chamber 12. The partition 2 can move in a first direction within the electrolytic cell 1 to adjust the volume of the first chamber 11 and the second chamber 12.

[0037] In the above technical solution, by providing a partition 2 that can move along a first direction, the partition 2 can adjust the volume of the first chamber 11 and the second chamber 12. When there is more material in one chamber and less material in the other, the volume of the chamber with less material can be reduced by moving the partition 2, thereby increasing the liquid level of the material in that chamber and increasing the contact area between the material and the heating device, thus improving heating efficiency. Alternatively, when the material temperature in one chamber is high and needs to be cooled, the volume of that chamber can be increased by moving the partition 2, thereby increasing the contact area between the material and air in that chamber. Combined with the air-cooling device, this can significantly improve the cooling efficiency of the material in that chamber. Therefore, it is possible to improve the temperature adjustment rate, thereby shortening the time required to adjust the material temperature in the chamber to the target temperature during production, thus shortening the production cycle and improving production efficiency.

[0038] In one embodiment of the present invention, the electrolytic metallurgical system includes a drive assembly 3, which includes a screw 31 and a drive device 32. The screw 31 extends in a vertical direction, and the drive device 32 is disposed on the top of the screw 31. A slider 33 is disposed on the screw 31, and the slider 33 is threadedly engaged with the screw 31. A connecting rod 34 is disposed on the slider 33, and the end of the connecting rod 34 away from the slider 33 is hinged to the partition 2.

[0039] In the above technical solution, the actuator for driving the displacement of the partition 2 of the drive component 3 is used to realize the automated and high-precision movement control of the partition within the electrolytic cell. The drive assembly 3 includes a screw 31 and a drive device 32. The drive device 32 includes a handwheel or other components that facilitate manual operation, or an automatic drive device such as a rotary motor. The drive device 32 drives the screw 31 to rotate, thereby causing the slider 33 on the screw 31 to move up and down along the screw. A connecting rod 34 is provided on the slider 33. The connecting rod 34 is used to connect the slider and the partition 2. The end of the connecting rod 34 away from the slider 33 is hinged to the partition 2. When it is necessary to adjust the position of the partition 2, the drive device 32 drives the screw to rotate, thereby causing the slider 33 to move up and down. During the process of the slider 33 sliding from one end of the screw to the middle of the screw, the slider 33 pushes the partition 2 to move away from the screw through the connecting rod 34. At this time, the volume of the chamber where the drive assembly is located increases, and the volume of the other chamber decreases, until the slider moves to the middle of the screw along the height direction, and the partition 2 moves to the limit distance farthest from the screw. The operating drive device 32 drives the slider 33 to move from the center of the screw along the height direction to any end of the screw. The slider 33 pulls the partition 2 closer to the screw via the connecting rod 34. At this time, the volume of the chamber where the drive assembly is located decreases, and the volume of the other chamber increases, until the slider moves to the end of the screw, at which point the partition 2 moves to the closest possible distance to the screw. During the movement, the partition 2 maintains a sealed connection with the inner wall of the electrolytic cell to prevent molten material from leaking into the other chamber.

[0040] In one embodiment of the present invention, the electrolytic metallurgical system includes a drive assembly 3, which includes a screw 31 and a drive device 32. A mounting through hole is provided on the partition 2. The screw 31 extends along a first direction and passes through the side wall of the electrolytic cell 1 and the mounting through hole in sequence. The screw 31 is rotatably engaged with the side wall of the electrolytic cell 1 and threadedly engaged with the mounting through hole. The drive device 32 is disposed on the outer side of the electrolytic cell and is drivenly connected to the screw 31.

[0041] In the above technical solution, the screw 31 can be arranged along the first direction, so that the drive device 32 can drive the partition 2 to move along the first direction through the threaded connection between the screw 31 and the partition 2. Specifically, the partition 2 has a thread inside the mounting through hole that mates with the screw 31. The screw 31 passes through the side wall of the electrolytic cell 1 and the mounting through hole in sequence along the first direction. The screw 31 is threadedly engaged with the mounting through hole to ensure that the rotational power output by the drive device 32, such as a rotary motor, can be converted into linear motion of the partition along the first direction. The side wall of the electrolytic cell 1 is rotatably engaged with the screw 31, which on the one hand allows the screw 31 to rotate under the drive of the drive device 32, and on the other hand limits the screw 31 axially to prevent the screw from slipping.

[0042] In one embodiment of the present invention, the electrolytic metallurgical system further includes a temperature control component. The temperature control component is provided in both the first chamber 11 and the second chamber 12. The temperature control component includes a heating device and a cooling device.

[0043] In the above technical solution, the temperature control component, as the core functional unit for achieving precise temperature control in the electrolytic metallurgical system, includes a heating device and a cooling device, thus integrating both heating and cooling capabilities. One of the first chamber 11 and the second chamber 12 is the electrolytic reaction zone, and the other is the molten metal collection zone. The required temperature environments in the two zones differ, and traditional single temperature control systems that heat or cool the entire electrolytic cell cannot meet the temperature requirements of different zones. Therefore, temperature control components are installed in both the first chamber 11 and the second chamber 12 to provide differentiated and synchronized thermal management capabilities for the electrolytic reaction zone and the molten metal collection zone, satisfying the significant differences between the two in terms of heat load, thermal response characteristics, and process requirements.

[0044] In one embodiment of the present invention, the heating device includes an AC heating section 411 and a resistance heating section 412, and / or the cooling device includes a liquid cooling section 421. The two ends of the liquid cooling section 421 are connected to the electrolytic cell 1, one end of which is a cooling medium inlet 4211 and the other end is a cooling medium outlet 4212. Both the cooling medium inlet 4211 and the cooling medium outlet 4212 are connected to the outside of the electrolytic cell 1, and the liquid cooling section 421 can contain the cooling medium.

[0045] In the above technical solution, the heating device includes an AC heating unit 411 and a resistance heating unit 412. The AC heating unit 411 is located at the bottom of the first chamber 11 and the second chamber 12, and uses AC electrodes directly fed into the molten salt as the main heating source. Utilizing the conductivity of the molten salt itself, it achieves efficient and uniform heating of large-volume, high-heat-capacity materials through the Joule heating effect. The resistance heating unit is located within the first chamber 11 and the second chamber 12, and indirectly heats the molten salt in the electrolytic cell by heating a resistance wire.

[0046] The cooling device includes a liquid cooling section 421, which serves as the core component of active cooling. It removes excess heat from the molten salt and molten metal through the flow of an internal cooling medium. The liquid cooling section 421 has a cooling medium inlet 4211 and a cooling medium outlet 4212 at its two ends. Through these inlets and outlets, the cooling medium flow channels within the liquid cooling section 421 connect to an external cold source or cooling system, allowing cooling media such as cooling water or air to circulate within the section. Existing electrolytic cell cooling and heating devices typically rely solely on electrode heating and air cooling, resulting in poor accuracy and stability in temperature regulation. This solution combines a heating device including an AC heating section 411 and a resistance heating section 412 with a cooling device incorporating a cooling medium to achieve gradient heating and cooling of the materials within the electrolytic cell. This results in more stable and accurate temperature regulation, thereby improving temperature control performance.

[0047] In one embodiment of the present invention, an air inlet pipe 13 is provided on the first chamber 11 and / or the second chamber 12, and the cooling device further includes an air cooling section 422. The air outlet of the air cooling section 422 is connected to the air inlet pipe 13, and the air cooling section 422 can blow air into the first chamber 11 and / or the second chamber 12 through the air inlet pipe 13.

[0048] In the above technical solution, for example, the air-cooling unit 422, such as the fan, is used to provide high-speed airflow into the electrolytic cell. The air outlet of the air-cooling unit 422 is connected to the air inlet pipe 13, allowing the high-speed airflow to enter the electrolytic cell through the air inlet pipe 13 to cool the molten salt. Specifically, the air inlet pipe 13 can be set at the bottom of the electrolytic cell. After the high-speed airflow enters the electrolytic cell, it passes through the molten salt and is discharged through the top opening of the electrolytic cell or the exhaust port on the top cover of the electrolytic cell, forming a bottom-up convection that effectively removes the high temperature of the molten salt, thereby cooling the molten salt and the environment. Alternatively, the air inlet pipe 13 can be set at the top of the electrolytic cell, guiding the high-speed airflow into the gas phase space above the molten salt or molten metal. The high-temperature vapor and hot air accumulated in the gas phase space are replaced by convection within the gas phase space, thereby cooling the molten salt and the environment. In addition, a cooling device can be added to the air-cooling unit 422 or the air inlet pipe 13 to cool the high-speed airflow blown into the electrolytic cell, which can further improve the cooling efficiency and effect.

[0049] In one embodiment of the present invention, the electrolytic cell 1 further includes a top cover, and a communication channel is provided between the partition and the top cover. The communication channel connects the first chamber 11 and the second chamber 12. An exhaust pipe 14 is provided on the top cover, and the first chamber 11 and the second chamber 12 are connected to the outside through the exhaust pipe 14.

[0050] In the above technical solution, the top cover is located on top of the electrolytic cell 1, covering and sealing the electrolytic cell 1, thereby forming a closed reaction environment inside it and preventing high-temperature molten salt splashing and disorderly escape of metal vapor. A connecting channel is provided between the partition 2 and the top cover, so that the gas phase of the first chamber 11 and the second chamber 12 are always connected, ensuring that the gas phase space of the two chambers will not generate a pressure difference or local vacuum due to volume changes during the process of the partition 2 moving along the first direction and adjusting the volume of the first chamber 11 and the second chamber 12. The exhaust pipe 14, as the only gas exhaust channel of the system, passes through the top cover and is connected to the external exhaust or gas recovery system, providing a directional and controllable exhaust path for the high-temperature gas, volatile metal vapor and inert protective gas generated in the first chamber 11 and the second chamber 12. When the cooling device also includes an air-cooling section 422, the cooling airflow delivered by the air-cooling section 422 to the electrolytic cell can also be discharged through the exhaust pipe 14, thereby forming convection in the electrolytic cell and realizing the cooling and temperature reduction of gaseous and liquid substances in the electrolytic cell.

[0051] In one embodiment of the present invention, the liquid cooling section 421 is Z-shaped or serpentine, the cooling medium outlet 4212 is located above the cooling medium inlet 4211, and the resistance heating section 412 is wound around the liquid cooling section 421.

[0052] In the above technical solution, the liquid cooling section 421 can be made of stainless steel pipes, and the liquid cooling section 421 can be set in a Z-shape or serpentine shape, thereby significantly increasing the contact area between the cooling medium and the molten salt or molten metal in the electrolytic cell. At the same time, the cooling medium inlet 4211 is set below the cooling medium outlet 4212, so that the cooling medium flows from bottom to top in the electrolytic cell, maximizing the heat exchange time between the cooling medium and the molten salt in the chamber, thereby improving the heat removal efficiency. In addition, arranging the liquid cooling section 421 in the middle of the electrolytic cell can effectively balance the temperature difference between the top and bottom, avoid local overheating caused by heat convection, and achieve continuous and controllable heat removal. The circulating coolant in the pipe can automatically control its flow rate according to the temperature. When rapid cooling is needed, the flow rate increases; when the temperature approaches or reaches the set temperature, the flow rate decreases or stops. When heating or heat preservation is needed, all coolant in the cooling pipe must be drained. Therefore, the resistance heating unit 412 and the liquid cooling unit 421 will not be in operation simultaneously. In this case, wrapping the resistance heating unit 412 around the liquid cooling unit 421 saves space and does not affect the cooling operation of the liquid cooling unit 421 while heating. When the liquid cooling unit 421 is in a drained, non-operating state, the resistance heating unit 412 can still achieve uniform heat transfer with the help of the metal pipe of the liquid cooling unit 421, improving the uniformity of heating.

[0053] In one embodiment of the present invention, the electrolytic metallurgical system further includes a host computer 5 and a switch 6. Temperature sensors 43 are provided in both the first chamber and the second chamber. The temperature sensors 43 are used to acquire the temperature in the first chamber and the second chamber. The temperature sensors 43 are communicatively connected to the host computer 5. After acquiring the temperature data, the temperature sensors 43 send it to the host computer, which calculates and determines the current temperature control mode. Then, the switch controls the opening and closing of the heating device and the cooling device, and further regulates the working power of the heating device and the cooling device to achieve fine temperature control, providing a hardware foundation for closed-loop temperature control.

[0054] In one embodiment of the present invention, the liquid molten salt in the electrolytic cell includes molten anhydrous magnesium chloride, lithium chloride, calcium chloride, aluminum chloride, etc.

[0055] See also Figures 1 to 6 As shown, the present invention also provides a temperature control method, which uses the electrolytic metallurgical system of the above embodiments to control the electrolytic metallurgical temperature. The temperature control method includes: setting a target temperature. Obtain the actual temperature According to the actual temperature With target temperature The difference Select the temperature control mode; adjust the heating power of the heating device according to the temperature control mode. and the cooling power of the cooling device .

[0056] In the above technical solution, the process involves "setting a target temperature—real-time acquisition of actual temperature—based on temperature difference". The closed-loop control logic of "intelligent selection of multi-mode control strategy—dynamic coordinated adjustment of heating and cooling power" overturns the traditional "coarse switching" or "single-stage PID" temperature control mode of electrolytic metallurgy, and achieves deep coupling with innovative hardware systems such as dual-zone independent temperature control, resistance-liquid cooling integrated structure, and air-cooling-liquid cooling synergy. This method, with segmented threshold control as its core, takes into account rapid response, precise and stable control, and energy saving and consumption reduction. It not only significantly improves electrolysis efficiency and metal yield, but also constructs a parameterizable, scalable, intelligent, and automated temperature control system applicable to various molten salt systems.

[0057] In one embodiment of the present invention, based on the actual temperature With target temperature The difference The steps to select the temperature control mode include: setting the target temperature. and temperature dead zone Obtain the actual temperature ; Calculate the actual temperature With target temperature Temperature difference between ;when When the electrolytic metallurgical system enters cooling mode; when When, turn off the heating and cooling devices; when At that time, the electrolytic metallurgical system is controlled to enter the heating mode.

[0058] In the above technical solution, a target temperature is set. Temperature dead zone And based on temperature difference = - It is divided into three modes: cooling, dead zone, and heating, aiming to achieve precise, stable, energy-saving, and safe temperature control in electrolytic metallurgy; among them, it sets... Provide control baselines to ensure process adaptability and introduce... Avoiding frequent start-ups and shutdowns of heating / cooling devices due to minor fluctuations effectively reduces equipment wear and energy consumption fluctuations, improves system reliability, and typically... =5℃. When The cooling mode is activated immediately to quickly suppress the risk of overheating and prevent metal volatilization and electrode corrosion. The heating mode is activated in time to efficiently restore the target temperature and ensure the kinetics of the electrolysis reaction. However, in the dead zone... The invention employs a smart temperature control closed loop that shuts off all active temperature control and relies on the system's thermal inertia to achieve natural equilibrium. This reduces energy consumption and eliminates control interference, enabling intervention and temperature adjustment when the temperature difference is large, and natural equilibrium when the temperature difference is small. This is the core control strategy of the invention for achieving efficient, stable, and long-life operation.

[0059] In one embodiment of the present invention, when the electrolytic metallurgical system enters the heating mode, the heating power of the heating device is adjusted according to the temperature control mode. The steps include: setting a low-temperature start-up threshold. Low temperature deceleration threshold and heating stop threshold When the heating device includes an AC heating section and a resistance heating section, the heating power... It has three heating stages: rapid heating, slow heating, and alternating heating.

[0060] when At that time, heating power During the rapid heating phase, both the AC heating unit and the resistance heating unit operate at maximum power simultaneously, maximizing the heating power of the heating device. Equal to maximum heating power Maximum heating power satisfy: ,in, This is the maximum power of the AC heating section. This represents the maximum power of the resistance heating element;

[0061] when At that time, heating power During the slow heating phase, the heating power is... satisfy: ;

[0062] when At that time, heating power During the alternating heating maintenance phase, the heating power is... satisfy: ;

[0063] Return to get the actual temperature The steps.

[0064] In the above technical solution, a low-temperature start-up threshold is set. Low temperature deceleration threshold and heating stop threshold In order to determine the required heating state at the current temperature, and thus adjust the heating power accordingly, specifically, the heating power... It has three heating stages: rapid heating, slow heating, and alternating heating. When... When the temperature is high, it indicates that the actual temperature is significantly lower than the target temperature suitable for electrolytic metallurgy, requiring a rapid heating phase to quickly raise the temperature environment inside the electrolytic cell. Therefore, the AC heating unit and the resistance heating unit are controlled to operate at maximum power simultaneously, and the heating power of the heating device is [not specified]. Equal to maximum heating power Maximum heating power satisfy: .when At this point, the actual temperature has gradually approached the low-temperature deceleration threshold, and the heating power should be controlled accordingly. satisfy: This allows the total heating power to decrease slowly as the temperature rises, achieving "gradual suppression of heating intensity," effectively suppressing overshoot and providing a thermal inertia buffer before entering the insulation zone. When the resistance heating element is turned off, heating is carried out solely by the AC heating element, further reducing the heating power. satisfy: After adjusting the heating power of the heating device to any heating stage based on the temperature difference, the actual temperature is then obtained. The steps involve achieving closed-loop control of temperature monitoring, temperature control mode, and power regulation.

[0065] In one embodiment of the present invention, when the electrolytic metallurgical system enters the cooling mode, the cooling power of the cooling device is adjusted according to the temperature control mode. The steps include: setting a high-temperature start-up threshold. High temperature deceleration threshold and water cooling shutdown threshold When the cooling device includes a liquid cooling section and an air cooling section, the cooling power... It has three cooling stages: rapid cooling, slow cooling, and air cooling.

[0066] when At that time, cooling power During the rapid cooling phase, both the liquid cooling unit and the air cooling unit operate at maximum power simultaneously, maximizing the cooling capacity of the cooling system. Equal to maximum cooling power Maximum cooling power satisfy: ,in, This represents the maximum flow rate of the liquid cooling section. The specific heat capacity at constant pressure of the coolant in the liquid cooling section. The efficiency coefficient of the liquid cooling section. This is the maximum wind speed of the air-cooled section. The effective heat exchange area of ​​the air-cooled section;

[0067] when At that time, cooling power During the slow cooling phase, the cooling power of the cooling device... satisfy: ;

[0068] when At that time, cooling power During the air-cooling maintenance phase, the liquid cooling section is emptied and stops working, leaving only the air-cooling section operating. At this time, the cooling power of the cooling device... satisfy: ;

[0069] Return to get the actual temperature The steps.

[0070] In the above technical solution, a high-temperature start-up threshold is set. High temperature deceleration threshold and water cooling shutdown threshold In order to determine the required cooling level at the current temperature and adjust the cooling power accordingly, specifically, the cooling power... It has three cooling stages: rapid cooling, slow cooling, and air cooling. When the temperature is too high, the liquid cooling unit and the air cooling unit are simultaneously operated at maximum cooling power. At this time, the cooling power of the cooling system... Equal to maximum cooling power Maximum cooling power satisfy: This causes the molten salt and ambient temperature to drop rapidly. When At that time, the actual temperature had gradually approached the high-temperature deceleration threshold. At this time, control the cooling power of the cooling device. satisfy: This allows the total cooling power to decrease slowly as the temperature drops, achieving "gradual suppression of cooling intensity," effectively suppressing overshoot and providing a buffer against cooling inertia before entering the insulation zone. At this time, the liquid cooling section is emptied and stops working, leaving only the air cooling section operating, further reducing the cooling power. satisfy: After adjusting the cooling power of the cooling device to any cooling stage based on the temperature difference, the actual temperature is then obtained. The steps involve achieving closed-loop control of temperature monitoring, temperature control mode, and power regulation, preparing for the next mode and stage selection.

[0071] In one embodiment of the present invention, the temperature control method further includes: adjusting the flow rate of the cooling medium in the liquid cooling section according to the temperature control mode. Internal cooling medium flow rate The adjustment follows the formula below:

[0072] .

[0073] In the above technical solution, when During the rapid cooling phase of the corresponding cooling mode, the cooling medium needs to operate at its maximum flow rate to quickly remove heat from the molten salt or molten metal, achieving rapid cooling. Experimental calculations show that, for example, a cooling medium such as circulating cooling water reaches its maximum circulation velocity of 353 mm / s, at which point the cooling effect is optimal. During the slow cooling phase of the corresponding cooling mode, the flow rate of the cooling medium gradually decreases as the temperature drops, ensuring that the cooling intensity is proportional to the actual temperature difference. This avoids the risk of sudden temperature drops, thermal stress cracks in the tank, or metal solidification caused by "overcooling," achieving a smooth and vibration-free cooling transition. During the corresponding air-cooling maintenance phase of the cooling mode, the liquid cooling section is shut off, and the temperature of the gas phase space inside the electrolytic cell is maintained solely by the air cooling section. Therefore, the cooling medium flow rate... =0.

[0074] In one embodiment of the present invention, the temperature control method further includes: adjusting the output air speed of the air-cooled unit according to the temperature control mode. Output wind speed The adjustment follows the formula below:

[0075] .

[0076] In the above technical solution, when During the rapid cooling phase of the corresponding cooling mode, the air-cooled unit needs to operate at maximum power. This, in conjunction with the liquid cooling unit, rapidly removes the heat from the molten salt or molten metal, achieving rapid cooling. Experimental calculations show that, for example, the output air velocity of air-cooled units such as blowers... The maximum output airflow speed is reached at 10150 mm / s, at which point the cooling effect is optimal. During the slow cooling phase of the corresponding cooling mode, the output airflow gradually decreases as the temperature drops, ensuring that the cooling intensity is proportional to the actual temperature difference. This avoids the risk of sudden temperature drops, thermal stress cracks in the tank, or metal solidification caused by "overcooling," achieving a smooth and vibration-free cooling transition. The output airflow at this time... satisfy .when During the corresponding air-cooling maintenance phase of the cooling mode, the liquid cooling unit is shut down, relying solely on the air cooling unit at minimum output fan speed. Maintain the temperature of the gas phase space inside the electrolytic cell.

[0077] In the first embodiment of the present invention, when the first chamber is the electrolytic reaction zone and the second chamber is the molten metal collection zone, the temperature control system of the second chamber is turned off, the molten salt liquid is pumped into the first chamber, the maximum temperature of the first chamber is set to 750°C, and the molten salt temperature is measured to be 510°C. The cooling system is then turned off, the resistance heating system is turned off, and the AC electrode heating is turned on. When the temperature rises to 720°C, the AC voltage decreases, and the temperature begins to rise slowly to 750°C, with a heating time of 1.6 hours. Experiments conducted using the same method on the second chamber show that the heating time is 1.5 hours, which may be due to the smaller volume of the second chamber compared to the first chamber.

[0078] In the second embodiment of the present invention, the temperature control system of the second chamber is turned off, and the molten salt liquid is pumped into the first chamber. The maximum temperature of the first chamber is set to 750°C, and the molten salt temperature is measured to be 510°C at this time. The cooling system is turned off, the resistance heating system is turned on, and the AC electrode heating is turned off. When the temperature rises to 720°C, the voltage of the resistance thermometer decreases, and the temperature begins to rise slowly to 750°C, with a heating time of 1 hour. Experiments conducted in the same manner on the second chamber show that the heating time is 0.9 hours, which may be due to the smaller volume of the second chamber compared to the first chamber.

[0079] In the third embodiment of the present invention, the temperature control system of the second chamber is turned off, and the molten salt liquid is pumped into the first chamber. The maximum temperature of the first chamber is set to 750°C, and the molten salt temperature is measured to be 510°C at this time. The cooling system is turned off, and the resistance heating system and the AC electrode heating system are turned on. When the temperature rises to 720°C, the voltage of the resistance thermometer and the AC voltage decrease, and the temperature begins to rise slowly to 750°C, with a heating time of 0.5 hours. Experiments conducted in the second chamber using the same method revealed that the heating time was 0.3 hours, which may be due to the smaller volume of the second chamber compared to the first chamber.

[0080] In the fourth embodiment of the present invention, the temperature control system of the second chamber is shut down, and the molten salt liquid is pumped into the first chamber. The maximum temperature of the first chamber is set to 510°C, and the molten salt temperature is measured to be 750°C. All systems are then shut down, and slow cooling begins for 2.5 hours. The second chamber is tested using the same method, and the cooling time is found to be 2.3 hours, indicating that the first and second chambers have good heat preservation effects.

[0081] In the fifth embodiment of the present invention, the difference from the fourth embodiment is that the heating system is turned off to verify the sensitivity of the cooling system, and only the air-cooling section is turned on to verify the cooling system of the first chamber. The temperature control system of the second chamber is turned off, and the highest temperature of the first chamber is set to 510°C. The molten salt temperature is measured to be 750°C at this time. The heating system is turned off, and the air-cooling section is turned on. When the temperature drops to 540°C, the air velocity of the air-cooling section decreases significantly, and the temperature begins to slowly drop to 510°C. The cooling time is 1.5 hours. The second chamber is tested in the same way, and the cooling time is found to be 1.4 hours. This may be due to the smaller volume of the second chamber compared to the first chamber.

[0082] In the sixth embodiment of the present invention, the difference from the fourth embodiment is that the heating system is turned off to verify the sensitivity of the cooling system, and only the liquid cooling section is turned on to verify the cooling system of the first chamber. The temperature control system of the second chamber is turned off, and the highest temperature of the first chamber is set to 510°C. The molten salt temperature is measured to be 750°C at this time. The heating system is turned off, and the liquid cooling section is turned on. When the temperature drops to 540°C, the flow rate of the liquid cooling section decreases significantly, and the temperature begins to slowly drop to 510°C. The cooling time is 0.8 hours. The second chamber is tested in the same way, and the cooling time is found to be 0.7 hours. This may be due to the smaller volume of the second chamber compared to the first chamber.

[0083] In the seventh embodiment of the present invention, the difference from the fourth embodiment is that the heating system is turned off to verify the sensitivity of the cooling system. Both cooling systems are then turned on simultaneously, the second chamber temperature control system is turned off, and the highest temperature of the first chamber is set to 510°C. The molten salt temperature is measured to be 750°C at this point. The heating system is then turned off, and both cooling systems are turned on simultaneously. When the temperature drops to 540°C, the flow rate in the liquid cooling section significantly decreases and gradually stops, and the air velocity in the air cooling section also slowly decreases. The temperature begins to slowly drop to 510°C, and the cooling time is 0.3 hours. The same method was used to test the second chamber, and the cooling time was found to be 0.2 hours. This may be due to the smaller volume of the second chamber compared to the first chamber.

[0084] In the eighth embodiment of the present invention, the difference from the fourth embodiment is that the heating and cooling systems are simultaneously activated to verify the sensitivity of the system's temperature rise and fall. The second chamber temperature control system is turned off, the highest temperature of the first chamber is set to 750°C, and the lowest temperature of the first chamber is set to 510°C. Both heating and cooling systems are activated simultaneously. After the systems are activated, the heating system is triggered, and the temperature begins to rise. The temperature reaches 720°C and then slowly rises to 750°C over a period of 0.5 hours. A holding time of 2 hours is set. After 2 hours, the first chamber temperature is set to 510°C, and the cooling system is immediately triggered. The temperature gradually decreases, and when it drops to 540°C, the flow rate in the liquid cooling section decreases significantly and gradually stops. The air velocity in the air cooling section also decreases slowly, and the temperature begins to slowly drop to 510°C over a period of 0.3 hours. Experiments conducted in the same manner on the second chamber show that the heating time is 0.3 hours and the cooling time is 0.2 hours. This may be due to the smaller volume of the second chamber compared to the first chamber.

[0085] In the ninth embodiment of the present invention, the difference from the fourth embodiment is that the sensitivity of the partition wall moving system is verified. When the driving device is a handwheel, rotating the handwheel moves the partition part 0.5m toward the second chamber, making the volume of the second chamber smaller. At this time, the cooling time of the second chamber is 1.7h. After the volume is reduced, the cooling time is significantly shortened.

[0086] As can be seen from the above description, the embodiments of the present invention achieve the following technical effects: By providing a partition 2 that can move along a first direction, the partition 2 can adjust the volume of the first chamber 11 and the second chamber 12. When there is more material in one chamber and less material in the other chamber, the volume of the chamber with less material can be reduced by moving the partition 2, thereby increasing the liquid level of the material in that chamber and increasing the contact area between the material in that chamber and the heating device, thus improving the heating efficiency. Alternatively, when the material temperature in one chamber is high and needs to be cooled, the volume of that chamber can be increased by moving the partition 2, thereby increasing the contact area between the material in that chamber and the air. Combined with the air-cooling device, the cooling efficiency of the material in that chamber can be significantly improved. Therefore, the effect of improving the temperature adjustment rate can be achieved, thereby shortening the time required to adjust the material temperature in the chamber to the target temperature in production, thus shortening the production cycle and improving production efficiency.

[0087] Obviously, the embodiments described above are merely some, not all, embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort should fall within the scope of protection of the present invention.

[0088] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0089] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. An electrolytic metallurgical system, characterized in that, It includes an electrolytic cell (1) and a partition (2). The partition (2) is disposed in the electrolytic cell (1) and divides the electrolytic cell (1) into a first chamber (11) and a second chamber (12). The partition (2) is movable in a first direction within the electrolytic cell (1) to adjust the volume of the first chamber (11) and the second chamber (12).

2. The electrolytic metallurgical system according to claim 1, characterized in that, The electrolytic metallurgical system includes a drive assembly (3), which includes a screw (31) and a drive device (32). The screw (31) extends vertically, and the drive device (32) is located on the top of the screw (31). A slider (33) is provided on the screw (31), and the slider (33) is threadedly engaged with the screw (31). A connecting rod (34) is provided on the slider (33), and the end of the connecting rod (34) away from the slider (33) is hinged to the partition (2).

3. The electrolytic metallurgical system according to claim 1, characterized in that, The electrolytic metallurgical system also includes a temperature control component. The temperature control component is provided in both the first chamber (11) and the second chamber (12). The temperature control component includes a heating device and a cooling device.

4. The electrolytic metallurgical system according to claim 3, characterized in that, The heating device includes an AC heating section (411) and a resistance heating section (412), and / or the cooling device includes a liquid cooling section (421), the two ends of which are connected to the electrolytic cell (1), one end being a cooling medium inlet (4211) and the other end being a cooling medium outlet (4212). Both the cooling medium inlet (4211) and the cooling medium outlet (4212) are connected to the outside of the electrolytic cell (1), and the liquid cooling section (421) can accommodate the cooling medium.

5. The electrolytic metallurgical system according to claim 4, characterized in that, An air inlet pipe (13) is provided on the first chamber (11) and / or the second chamber (12). The cooling device also includes an air-cooling section (422). The air outlet of the air-cooling section (422) is connected to the air inlet pipe (13). The air-cooling section (422) can blow air into the first chamber (11) and / or the second chamber (12) through the air inlet pipe (13).

6. The electrolytic metallurgical system according to claim 5, characterized in that, The electrolytic cell (1) also includes a top cover, and there is a communication channel between the partition and the top cover. The communication channel connects the first chamber (11) and the second chamber (12). An exhaust pipe (14) is provided on the top cover, and the first chamber (11) and the second chamber (12) are connected to the outside through the exhaust pipe (14).

7. A temperature control method, characterized in that, The electrolytic metallurgical system as described in any one of claims 1 to 6 is used to control the electrolytic metallurgical temperature, and the temperature control method includes: Set target temperature ; Obtain actual temperature ; Based on actual temperature With target temperature The difference Select the temperature control mode; Adjust the heating power of the heating device according to the temperature control mode. and the cooling power of the cooling device .

8. The temperature control method according to claim 7, characterized in that, Based on actual temperature With target temperature The difference The steps to select the temperature control mode include: Set target temperature and temperature dead zone ; Obtain actual temperature ; Calculate the actual temperature With target temperature Temperature difference between ; when At that time, the electrolytic metallurgical system is controlled to enter cooling mode; when When necessary, turn off the heating and cooling devices; when At that time, the electrolytic metallurgical system is controlled to enter the heating mode.

9. The temperature control method according to claim 8, characterized in that, When the electrolytic metallurgical system enters the heating mode, the heating power of the heating device is adjusted according to the temperature control mode. The steps include: Set low temperature start-up threshold Low temperature deceleration threshold and heating stop threshold ; When the heating device includes an AC heating section and a resistance heating section, the heating power It has three heating stages: rapid heating, slow heating, and alternating heating. when At that time, heating power During the rapid heating phase, both the AC heating unit and the resistance heating unit operate at maximum power simultaneously, maximizing the heating power of the heating device. Equal to maximum heating power Maximum heating power satisfy: ， in, This is the maximum power of the AC heating section. This represents the maximum power of the resistance heating element; when At that time, heating power During the slow heating phase, the heating power is... satisfy: ； when At that time, heating power During the alternating heating maintenance phase, the heating power is... satisfy: ； Return to get the actual temperature The steps.

10. The temperature control method according to claim 8, characterized in that, When the electrolytic metallurgical system enters cooling mode, the cooling power of the cooling device is adjusted according to the temperature control mode. The steps include: Set high temperature start threshold High temperature deceleration threshold and water cooling shutdown threshold ; When the cooling device includes a liquid cooling section and an air cooling section, the cooling power It has three cooling stages: rapid cooling, slow cooling, and air cooling. when At that time, cooling power During the rapid cooling phase, both the liquid cooling unit and the air cooling unit operate at maximum power simultaneously, maximizing the cooling capacity of the cooling system. Equal to maximum cooling power Maximum cooling power satisfy: ， in, This represents the maximum flow rate of the liquid cooling section. The specific heat capacity at constant pressure of the coolant in the liquid cooling section. The efficiency coefficient of the liquid cooling section. This is the maximum wind speed of the air-cooled section. The effective heat exchange area of ​​the air-cooled section; when At that time, cooling power During the slow cooling phase, the cooling power of the cooling device... satisfy: ； when At that time, cooling power During the air-cooling maintenance phase, the liquid cooling section is emptied and stops working, leaving only the air-cooling section operating. At this time, the cooling power of the cooling device... satisfy: ； Return to get the actual temperature The steps.

11. The temperature control method according to claim 10, characterized in that, Temperature control methods also include: adjusting the flow rate of the cooling medium in the liquid cooling section according to the temperature control mode. Internal cooling medium flow rate The adjustment follows the formula below: 。 12. The temperature control method according to claim 10, characterized in that, Temperature control methods also include: adjusting the output fan speed of the air-cooled unit according to the temperature control mode. Output wind speed The adjustment follows the formula below: 。

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