Electrolytic cell anode assembly and electrolytic cell

Abstract

The application provides an electrolytic cell anode assembly and an electrolytic cell, and belongs to the technical field of electrolytic metallurgy. The electrolytic cell anode assembly comprises, in sequence, an anode carbon block, an anode steel claw and an anode guide rod, the anode steel claw or the anode guide rod is provided with a heat preservation structure, the anode steel claw or the anode guide rod is further provided with a driving device in transmission connection with the heat preservation structure to drive the heat preservation structure to act, and the heat preservation structure has a heat preservation station in contact with the covering material on the anode carbon block or directly in contact with the anode carbon block in the action stroke of the heat preservation structure, and further has a heat dissipation station separated from the covering material on the anode carbon block or separated from the anode carbon block. In the application, the electrolytic cell anode assembly can adapt to the periodic or intermittent change of the power load, the heat preservation structure is switched between the heat preservation station and the heat dissipation station according to the different input current intensity, the heat dissipation of the upper part of the electrolytic cell is increased or reduced, the energy balance of the melt in the electrolytic cell is maintained, and the production is stable.

Description

Technical Field

[0001] This invention relates to an anode assembly and an electrolytic cell, belonging to the field of electrolytic metallurgy technology. Background Technology

[0002] Aluminum electrolytic cells are the core equipment in aluminum smelting plants. For the current mainstream cell types, an aluminum electrolytic series typically consists of 200 to 360 cells connected in series. Aluminum smelting is a high-energy-consuming industry. In my country's electricity supply for aluminum smelting, fossil fuels account for nearly 90%, far exceeding that of developed countries and the world average. With the increasing efforts to adjust the national power structure, the proportion of renewable energy in the overall energy structure will continue to grow, while the proportion of fossil fuels will gradually decrease. In the future, the aluminum smelting industry will move towards a new model of aluminum smelting using new energy sources such as hydropower, wind power, and solar energy.

[0003] The production process of electrolytic aluminum strictly requires a stable power supply load. However, wind and solar power are affected by day and night, causing changes in the power load. The input current intensity increases during the day and decreases at night, which in turn causes significant changes in the electrolysis temperature of the aluminum electrolytic cell. The electrolysis temperature of the aluminum electrolytic cell needs to be stable during production to achieve high efficiency and low energy consumption. Therefore, the aluminum electrolytic cell needs to adapt to the periodic or intermittent changes in the renewable energy power load. In other words, the electrolytic cell needs to be able to carry out "flexible production." The structure of the electrolytic cell needs to increase heat dissipation when the renewable energy power input increases and decrease heat dissipation when the renewable energy power input decreases, so as to maintain the energy balance of the melt in the cell. The electrolytic cell can adapt to changes in power load and maintain stable production.

[0004] Chinese utility model patent CN217104100U discloses an aluminum electrolytic cell with an anode insulation structure. The cell includes a cell body, an anode carbon block on the cell body, an anode steel claw on the anode carbon block, and an anode guide rod on the anode steel claw. An anode insulation structure is detachably installed at the connection between the anode steel claw and the anode carbon block. The anode insulation structure is fixedly connected to the anode steel claw by at least two locking devices. During use, as the anode carbon block is continuously consumed and the residual anode needs to be replaced, the anode insulation structure is lifted out of the electrolytic cell along with the residual anode. After removal, the insulation structure can be installed on a new anode for reuse.

[0005] The anode insulation structure in the aforementioned patent is fixed on the anode steel claw, replacing the anode covering material that covers the anode carbon block. However, the anode insulation structure only has one working state and can only provide a continuous and unchanging insulation effect. It cannot adaptively change the insulation effect according to the periodic or intermittent changes in the new energy power load, which is not conducive to maintaining the energy balance of the melt in the tank, and thus cannot maintain stable production. Summary of the Invention

[0006] The purpose of this invention is to provide an anode assembly for an electrolytic cell to solve the problem that the existing anode insulation structure cannot change its insulation effect according to changes in power load, thus failing to maintain the energy balance of the melt in the electrolytic cell and thus failing to maintain stable production; the purpose of this invention is also to provide an electrolytic cell to solve the above problems.

[0007] To achieve the above objectives, the electrolytic cell anode assembly of the present invention adopts the following technical solution:

[0008] An anode assembly for an electrolytic cell includes an anode carbon block, an anode steel claw, and an anode guide rod connected in sequence. A heat-insulating structure is installed on the anode steel claw or the anode guide rod. A drive device that is connected to the heat-insulating structure for driving the heat-insulating structure is also installed on the anode steel claw or the anode guide rod. The heat-insulating structure has a heat-insulating position where it contacts the covering material on the anode carbon block or directly contacts the anode carbon block, and a heat dissipation position where it detaches from the covering material on the anode carbon block or detaches from the anode carbon block.

[0009] The beneficial effects of the above technical solution are as follows: This invention improves the existing anode assembly of an electrolytic cell by installing a drive device on the anode steel claw or anode guide rod that is connected to the insulation structure to drive the insulation structure. This allows the insulation structure to have an insulation position where it contacts or directly contacts the covering material on the anode carbon block, and a heat dissipation position where it detaches from the covering material or the anode carbon block. Thus, under conditions of periodic or intermittent changes in power load, if the input current intensity increases, the drive device can move the insulation structure to the heat dissipation position, increasing heat dissipation at the top of the electrolytic cell, maintaining the energy balance of the melt in the electrolytic cell, and maintaining stable production. If the input current intensity decreases, the drive device can move the insulation structure to the insulation position, reducing heat dissipation at the top of the electrolytic cell, maintaining the energy balance of the melt in the electrolytic cell, and maintaining stable production.

[0010] Furthermore, the insulation structure is hinged to the anode steel claw or anode guide rod, and the drive device rotates the insulation structure to switch it between the insulation station and the heat dissipation station.

[0011] The advantages of the above technical solution are as follows: the insulation structure is hinged, and the drive device can switch between the insulation position and the heat dissipation position by rotating the insulation structure. The installation structure is simple, convenient to manufacture and assemble, and also convenient to control the movement of the insulation structure.

[0012] Furthermore, the drive unit includes a sling connected to the insulation structure and a winch connected to the sling, the winch being fixed to the anode guide rod.

[0013] The advantages of the above technical solution are: using a winch and slings as the driving device, the structure is simple and easy to arrange, without occupying too much space in the electrolytic cell, and it is also convenient to control the operation of the insulation structure.

[0014] Furthermore, the anode guide rod is equipped with a directional changer for the sling to pass through or around in order to change the direction of the sling.

[0015] The advantages of the above technical solution are: it facilitates the connection between the sling and the insulation structure and the winch, and also facilitates the movement of the sling.

[0016] Furthermore, there are two insulation structures arranged on both sides of the anode steel claw or anode guide rod. Each insulation structure is connected to a sling, and the slings on the two insulation structures pass through or around the same directional changer and are then connected to the same winch.

[0017] The advantages of the above technical solution are as follows: there are two insulation structures arranged on both sides, the structure is simple, and it is easy to cover the anode carbon block or covering material to the greatest extent to ensure the insulation effect of the insulation station; at the same time, the movement of the two insulation structures can be controlled by the same winch, which can save space and cost and realize the synchronous movement of the two insulation structures.

[0018] Furthermore, the anode steel claw includes a crossbeam and at least two fixed claws connected to the crossbeam, each fixed claw being embedded in the anode carbon block, and the thermal insulation structure is hinged to the crossbeam.

[0019] The advantages of the above technical solution are: the crossbeam is relatively long, which facilitates the hinged installation of the insulation structure, and at the same time simplifies the shape of the insulation structure, ensuring the insulation effect of the insulation station.

[0020] Furthermore, there are two insulation structures arranged on both sides of the anode steel claw or anode guide rod. The two insulation structures include mating surfaces for contact during the insulation process, so that the two insulation structures completely cover the anode carbon block or covering material when in the insulation process.

[0021] The beneficial effects of the above technical solution are as follows: there are two insulation structures arranged on both sides, the structure is simple, and the two insulation structures include a mating surface for contact when they are in the insulation position, so that the two insulation structures completely cover the anode carbon block or covering material when they are in the insulation position, thus ensuring the insulation effect of the insulation position.

[0022] Furthermore, there are two directional switches arranged vertically and horizontally along the anode guide rod, and the winch is located on the lateral side of the upper directional switch. The sling includes an inclined section between the lower directional switch and the insulation structure, a vertical section between the two directional switches, and a horizontal section between the upper directional switch and the winch.

[0023] The advantages of the above technical solution are: it facilitates the connection between the sling and the insulation structure and the winch, and also facilitates the movement of the sling.

[0024] Furthermore, the insulation structure includes an insulation shell and insulation material disposed within the insulation shell.

[0025] The advantages of the above technical solution are: it facilitates the manufacturing of thermal insulation structures and ensures service life and performance.

[0026] To achieve the above objectives, the electrolytic cell in this invention adopts the following technical solution:

[0027] An electrolytic cell includes a cell body and an anode assembly. The anode assembly includes an anode carbon block, an anode steel claw, and an anode guide rod connected in sequence. A heat-insulating structure is installed on the anode steel claw or the anode guide rod. A drive device that is connected to the heat-insulating structure for driving the heat-insulating structure is also installed on the anode steel claw or the anode guide rod. The heat-insulating structure has a heat-insulating position that contacts the covering material on the anode carbon block or directly contacts the anode carbon block, and a heat dissipation position that detaches from the covering material on the anode carbon block or detaches from the anode carbon block.

[0028] The beneficial effects of the above technical solution are as follows: This invention improves the anode assembly of existing electrolytic cells by installing a drive device on the anode steel claws or anode guide rods, which is connected to the insulation structure to drive the insulation structure to move. This allows the insulation structure to have an insulation position where it contacts or directly contacts the covering material on the anode carbon block, and a heat dissipation position where it detaches from the covering material or the anode carbon block. Thus, under the condition of periodic or intermittent changes in power load, if the input current intensity increases, the drive device can move the insulation structure to the heat dissipation position, increasing heat dissipation at the top of the electrolytic cell, maintaining the energy balance of the melt in the electrolytic cell, and maintaining stable production. If the input current intensity decreases, the drive device can move the insulation structure to the insulation position, reducing heat dissipation at the top of the electrolytic cell, maintaining the energy balance of the melt in the electrolytic cell, and maintaining stable production.

[0029] Furthermore, the insulation structure is hinged to the anode steel claw or anode guide rod, and the drive device rotates the insulation structure to switch it between the insulation station and the heat dissipation station.

[0030] The advantages of the above technical solution are as follows: the insulation structure is hinged, and the drive device can switch between the insulation position and the heat dissipation position by rotating the insulation structure. The installation structure is simple, convenient to manufacture and assemble, and also convenient to control the movement of the insulation structure.

[0031] Furthermore, the drive unit includes a sling connected to the insulation structure and a winch connected to the sling, the winch being fixed to the anode guide rod.

[0032] The advantages of the above technical solution are: using a winch and slings as the driving device, the structure is simple and easy to arrange, without occupying too much space in the electrolytic cell, and it is also convenient to control the operation of the insulation structure.

[0033] Furthermore, the anode guide rod is equipped with a directional changer for the sling to pass through or around in order to change the direction of the sling.

[0034] The advantages of the above technical solution are: it facilitates the connection between the sling and the insulation structure and the winch, and also facilitates the movement of the sling.

[0035] Furthermore, there are two insulation structures arranged on both sides of the anode steel claw or anode guide rod. Each insulation structure is connected to a sling, and the slings on the two insulation structures pass through or around the same directional changer and are then connected to the same winch.

[0036] The advantages of the above technical solution are as follows: there are two insulation structures arranged on both sides, the structure is simple, and it is easy to cover the anode carbon block or covering material to the greatest extent to ensure the insulation effect of the insulation station; at the same time, the movement of the two insulation structures can be controlled by the same winch, which can save space and cost and realize the synchronous movement of the two insulation structures.

[0037] Furthermore, the anode steel claw includes a crossbeam and at least two fixed claws connected to the crossbeam, each fixed claw being embedded in the anode carbon block, and the thermal insulation structure is hinged to the crossbeam.

[0038] The advantages of the above technical solution are: the crossbeam is relatively long, which facilitates the hinged installation of the insulation structure, and at the same time simplifies the shape of the insulation structure, ensuring the insulation effect of the insulation station.

[0039] Furthermore, there are two insulation structures arranged on both sides of the anode steel claw or anode guide rod. The two insulation structures include mating surfaces for contact during the insulation process, so that the two insulation structures completely cover the anode carbon block or covering material when in the insulation process.

[0040] The beneficial effects of the above technical solution are as follows: there are two insulation structures arranged on both sides, the structure is simple, and the two insulation structures include a mating surface for contact when they are in the insulation position, so that the two insulation structures completely cover the anode carbon block or covering material when they are in the insulation position, thus ensuring the insulation effect of the insulation position.

[0041] Furthermore, there are two directional switches arranged vertically and horizontally along the anode guide rod, and the winch is located on the lateral side of the upper directional switch. The sling includes an inclined section between the lower directional switch and the insulation structure, a vertical section between the two directional switches, and a horizontal section between the upper directional switch and the winch.

[0042] The advantages of the above technical solution are: it facilitates the connection between the sling and the insulation structure and the winch, and also facilitates the movement of the sling.

[0043] Furthermore, the insulation structure includes an insulation shell and insulation material disposed within the insulation shell.

[0044] The advantages of the above technical solution are: it facilitates the manufacturing of thermal insulation structures and ensures service life and performance. Attached Figure Description

[0045] Figure 1 This is a front view of the anode assembly of the electrolytic cell in this invention;

[0046] Figure 2 This is a side view of the anode assembly of the electrolytic cell in this invention (driving device not shown);

[0047] Figure 3 This is a partial structural diagram of the electrolytic cell in this invention.

[0048] In the diagram: 100, Anode assembly; 1, Anode carbon block; 2, Anode steel claw; 2-1, Crossbeam; 3, Anode guide rod; 4, Insulation structure; 4-1, Insulation shell; 4-2, Insulation material; 5, Covering material; 6, Hinged structure; 6-1, Shell welded pipe; 6-2, Crossbeam welded pipe; 6-3, Pin; 7, Sling; 8, Directional changer; 9, Winch; 10, Lifting hole; 11, Tank; 12, Clamp; 13, Horizontal cover plate. Detailed Implementation

[0049] The features and performance of the present invention will be further described in detail below with reference to embodiments.

[0050] Example 1 of the electrolytic cell in this invention:

[0051] This embodiment improves the anode assembly of existing electrolytic cells by installing a drive device on the anode steel claws that is connected to the insulation structure to drive the insulation structure. The insulation structure has an insulation station that contacts the covering material on the anode carbon block or directly contacts the anode carbon block, and a heat dissipation station that detaches from the covering material on the anode carbon block or detaches from the anode carbon block. This allows the electrolytic cell to increase or decrease heat dissipation according to the diurnal variation of solar energy input when using periodically changing new energy sources such as solar energy.

[0052] like Figure 3 As shown, the electrolytic cell includes a cell body 11 and multiple anode assemblies 100. In this embodiment, the electrolytic cell is an aluminum electrolytic cell, and a horizontal cover plate 13 is provided on the top of the cell body 11. Figure 1 and Figure 2As shown, the anode assembly 100 includes an anode carbon block 1, an anode steel claw 2, and an anode guide rod 3 connected sequentially from bottom to top. The anode guide rod 3 passes through the horizontal cover plate 13 and is connected to the clamp 12.

[0053] A thermal insulation structure 4 is installed on the anode steel claw 2. The thermal insulation structure 4 includes a thermal insulation shell 4-1 and thermal insulation material 4-2 disposed within the thermal insulation shell 4-1. The thermal insulation shell 4-1 can be made of metals such as steel or aluminum, and its length is consistent with the length of the anode carbon block 1. The width is suitable so that two adjacent anode components 100° do not interfere with each other. The thermal insulation material 4-2 can be made of lightweight materials such as air, silicate insulation cotton, or glass wool. The composite thickness of the thermal insulation shell 4-1 and the thermal insulation material 4-2 should be determined based on the energy balance required for stable production of the electrolytic cell when the input of new energy power is minimal.

[0054] The insulation structure 4 is hinged to the anode steel claw 2. Specifically, the anode steel claw 2 includes a crossbeam 2-1 and at least two fixed claws (not shown in the attached drawings) connected to the crossbeam 2-1. Each fixed claw is embedded in the anode carbon block 1, and the anode guide rod 3 is welded to the top of the crossbeam 2-1. Figure 1 and Figure 2 As shown, the insulation structure 4 is hinged to the crossbeam 2-1 through multiple hinge structures 6. The hinge structure 6 includes a shell welded pipe 6-1 welded and fixed to the insulation shell 4-1, a crossbeam welded pipe 6-2 welded and fixed to the crossbeam 2-1, and a pin 6-3 passing through the shell welded pipe 6-1 and the crossbeam welded pipe 6-2, so that the insulation structure 4 can rotate and move up and down around the hinge structure 6.

[0055] like Figure 1 As shown, an anode assembly 100 includes two insulation structures 4, which are symmetrically arranged on both sides of the crossbeam 2-1. Each insulation structure 4 is hinged to the crossbeam 2-1 through multiple hinge structures 6. Figure 2 As shown, since the length of the crossbeam 2-1 is less than the length of the anode carbon block 1, in order to ensure good insulation effect, the overall shape of the insulation structure 4 is not a standard cuboid. Instead, a recessed structure is provided at the position corresponding to the crossbeam 2-1, thereby forming a mating surface for contact at both ends of the crossbeam 2-1. This ensures that the covering material 5 is completely covered when the two insulation structures 4 are performing their insulation function, leaving no gaps in the middle. During the installation of the anode assembly 100, the covering material 5 is first laid on the anode carbon block 1. After laying, the outer shell welded pipe 6-1 and the crossbeam welded pipe 6-2 are connected by pins 6-3. The thickness of the covering material 5 is appropriate based on the energy balance required for stable production of the electrolytic cell when the maximum input of new energy power is reached.

[0056] The anode guide rod 3 is also equipped with a drive device that is connected to the insulation structure 4 to drive the insulation structure 4 to rotate, so that the insulation structure 4 has an insulation position that contacts the covering material 5 on the anode carbon block 1 and a heat dissipation position that detaches from the covering material 5 during its stroke. Figure 1 As shown, the drive unit includes a sling 7 connected to the insulation structure 4 and a winch 9 connected to the sling 7. The winch 9 is a small winch, which is fixed to the side of the anode guide rod 3 by a clamp. The power can be electric or pneumatic, and it can rotate in both forward and reverse directions. The rotation is controlled by the PLC of the control system.

[0057] To facilitate the connection between the sling 7 and the insulation structure 4, a lifting hole 10 is provided on the insulation shell 4-1, and one end of the sling 7 is fixed to the lifting hole 10. In this embodiment, the sling 7 is a sling rope, and a direction changer 8 is provided on the anode guide rod 3 for the sling 7 to pass through in order to change the direction of the sling 7. The direction changer 8 is an aluminum U-shaped bracket, which is fixed on the anode guide rod 3 to form a perforated structure. Its purpose is to change the direction of the sling 7 and constrain the sling 7.

[0058] like Figure 1 and combined Figure 3 As shown, there are two directional control units 8, arranged vertically and alternately along the anode guide rod 3. The upper directional control unit 8 is located between the horizontal cover plate 13 and the clamp 12, and the lower directional control unit 8 is located between the horizontal cover plate 13 and the top surface of the anode steel claw 2. The winch 9 is located on the lateral side of the upper directional control unit 8, that is, the two are at the same height. The other end of the sling 7 is fixed to the rotating shaft of the winch 9, so that the sling 7 includes an inclined section between the lower directional control unit 8 and the insulation structure 4, a vertical section between the two directional control units 8, and a horizontal section between the upper directional control unit 8 and the winch 9.

[0059] Meanwhile, the slings 7 connected to the two insulation structures 4 pass through two direction changers 8 and are connected to the same winch 9. This means that for one anode assembly 100, the movement of the two insulation structures 4 is controlled by one winch 9, thus saving space and cost and achieving synchronous movement of the two insulation structures 4. Furthermore, each anode assembly 100 is equipped with a separate winch 9 to facilitate daily replacement of different anodes. During electrolytic cell production, the bottom surface of each anode is consumed, and to maintain the electrode distance between the cathode and anode, the daily consumption of anodes relative to the upper structure of the electrolytic cell decreases.

[0060] The working principle of the anode assembly of the electrolytic cell in this invention is as follows:

[0061] During the day, new energy sources such as solar power are used, increasing the input current intensity. At appropriate times, the winch 9 can be rotated by the PLC of the control system, and the hoist 7 can be pulled up, causing the insulation structure 4 to rotate upward and detach from the covering material 5. This allows the insulation structure 4 to switch from the insulation position to the heat dissipation position, increasing the heat dissipation of the upper part of the electrolytic cell, maintaining the thermal balance of the melt in the electrolytic cell, and maintaining stable production.

[0062] At night or during rainy or snowy weather, when solar and other new energy power sources are withdrawn from use, the winch 9 can be rotated by the PLC of the control system at an appropriate time. The sling 7 is then lowered, causing the insulation structure 4 to rotate downwards and cover the covering material 5. This switches the insulation structure 4 from a heat dissipation position to an insulation position. The mating surfaces of the two insulation structures 4 come into contact, completely covering the covering material 5, reducing heat dissipation from the upper part of the electrolytic cell, maintaining the thermal balance of the electrolytic cell melt, and ensuring stable production.

[0063] Therefore, the anode assembly of the electrolytic cell in this invention can adapt to the periodic or intermittent changes in power load. Under the condition of ensuring stable production, it can absorb new energy sources such as solar energy that are affected by the diurnal cycle and rain and snow weather. It can achieve flexible production under the condition of ±10% fluctuation of power load, reduce the cell shutdown losses caused by power off-peak (power restriction), and has huge economic and environmental benefits.

[0064] Example 2 of the electrolytic cell in this invention: This example provides a heat insulation structure with a different composition. Unlike Example 1, the heat insulation structure does not include an outer shell and is made directly from the heat insulation material.

[0065] Example 3 of the electrolytic cell in this invention: This example provides a different arrangement scheme of the converter. Unlike Example 1, only one converter is set. The slings on the two insulation structures pass through this one converter and are directly connected to the winch.

[0066] Example 4 of the electrolytic cell in this invention: This example provides a different structural form of the directional switch. Unlike Example 1, the directional switch is a shaft around which the sling passes.

[0067] Example 5 of the electrolytic cell in this invention: This example provides a different arrangement scheme for the winch and the directional switch. Unlike Example 1, the slings on the two insulation structures are each equipped with a directional switch and a winch, and the rotation of the two insulation structures can be controlled independently.

[0068] Example 6 of the electrolytic cell in this invention: This example provides a different arrangement of the insulation structure. Unlike Example 1, there are four insulation structures, one each in front, back, left, and right of the anode steel claw. Each one is rectangular and is connected when in the insulation position to ensure the insulation effect.

[0069] Example 7 of the electrolytic cell in this invention: This example provides a different arrangement of the insulation structure. Unlike Example 1, there is only one insulation structure, which is still hinged to the anode steel claw and only partially or half of the covering material is in contact during the insulation work station.

[0070] Example 8 of the electrolytic cell in this invention: This example provides different arrangement schemes of the heat preservation structure. Unlike the above examples, the heat preservation structure is hinged to the anode guide rod. If there are two heat preservation structures, they are located on both sides of the anode guide rod.

[0071] Example 9 of the electrolytic cell in this invention: This example provides a different connection method between the sling and the winch. Unlike Example 1, this example does not have a direction changer. One end of the sling is connected to the insulation structure, and the other end is directly connected to the winch.

[0072] Example 10 of the electrolytic cell in this invention: This example provides a different form of sling. Unlike Example 1, the sling is a chain.

[0073] Example 11 of the electrolytic cell in this invention: This example provides a different installation method for the drive device. Unlike Example 1, when the size of the anode steel claw is sufficient, the drive device is directly installed on the anode steel claw.

[0074] Example 12 of the electrolytic cell in this invention: This example provides a different form of driving device. Unlike Example 1, the driving device is not a sling and winch, but a device that can output direct motion, such as a cylinder, hydraulic cylinder or electric actuator. At this time, the two ends of the device are respectively hinged to the heat preservation device and the anode guide rod to drive the heat preservation device to rotate.

[0075] Example 13 of the electrolytic cell in this invention: This example provides different installation methods for the insulation structure. Unlike Example 1, the insulation structure is not hinged, but is moved up and down and fitted around the anode steel claw or anode guide rod. In this case, the insulation structure is a single piece of insulation structure. The driving device is a cylinder, hydraulic cylinder or electric actuator or other device that can output direct motion. The device is directly connected to the insulation structure and drives the insulation structure to move up and down, so as to switch between the insulation station and the heat dissipation station.

[0076] Example 14 of the electrolytic cell in this invention: Unlike Example 1, no covering material is provided on the anode carbon block. When the heat preservation structure is in the heat preservation position, it is in direct contact with the anode carbon block, and when it is in the heat dissipation position, it is directly separated from the anode carbon block.

[0077] Example 15 of the electrolytic cell in this invention: Unlike Example 1, the electrolytic cell is a magnesium electrolytic cell.

[0078] The embodiment of the electrolytic cell anode assembly in this invention is as follows: the specific structure of the electrolytic cell anode assembly is the same as that of the anode assembly in the above-described electrolytic cell embodiment, and will not be repeated here.

[0079] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. The scope of patent protection of the present invention shall be determined by the claims. Similarly, any equivalent structural changes made based on the description and drawings of the present invention shall also be included within the scope of protection of the present invention.

Claims

1. An electrolytic cell anode assembly comprising, in sequence, an anode carbon block (1), an anode steel claw (2) and an anode guide rod (3), the anode carbon block (1) being provided with a covering material (5), the anode steel claw (2) or the anode guide rod (3) being provided with a heat preservation structure (4), characterized in that, The anode steel claw (2) or the anode guide rod (3) is further provided with a driving device in transmission connection with the heat preservation structure (4) to drive the heat preservation structure (4) to act, the heat preservation structure (4) has a heat preservation station in contact with the covering material (5) on the anode carbon block (1) and a heat dissipation station to separate from the covering material on the anode carbon block (1) in an action stroke.

2. The electrolytic cell anode assembly of claim 1, wherein, The heat preservation structure (4) is hinged on the anode steel claw (2) or the anode guide rod (3), and the driving device drives the heat preservation structure (4) to rotate to switch between the heat preservation station and the heat dissipation station.

3. The electrolytic cell anode assembly of claim 2, wherein, The driving device comprises a sling (7) connected with the heat preservation structure (4) and a winch (9) connected with the sling (7), and the winch (9) is fixed on the anode guide rod (3).

4. The electrolytic cell anode assembly of claim 3, wherein, The anode guide rod (3) is provided with a direction changer (8) for the sling (7) to pass through or bypass to change the direction of the sling (7).

5. The electrolytic cell anode assembly of claim 4, wherein, The heat preservation structure (4) has two and is arranged on both sides of the anode steel claw (2) or the anode guide rod (3), the two heat preservation structures (4) are respectively connected with the slings (7), and the slings (7) on the two heat preservation structures (4) pass through or bypass the same direction changer (8) and are connected to the same winch (9).

6. The electrolytic cell anode assembly according to any one of claims 2 to 5, characterized in that, The anode steel claw (2) comprises a cross beam (2-1) and at least two fixed claws connected to the cross beam (2-1), each fixed claw is embedded in the anode carbon block (1), and the heat preservation structure (4) is hinged on the cross beam (2-1).

7. The electrolytic cell anode assembly according to any one of claims 2 to 4, characterized in that, The heat preservation structure (4) has two and is arranged on both sides of the anode steel claw (2) or the anode guide rod (3), the two heat preservation structures (4) comprise abutting surfaces for abutting contact in the heat preservation station, so that the two heat preservation structures (4) completely cover the anode carbon block (1) or the covering material (5) when in the heat preservation station.

8. An electrolytic cell anode assembly according to claim 4 or 5, characterised in that, The direction changer (8) has two and is arranged in an interval upward and downward along the anode guide rod (3), the winch (9) is located on a transverse side of the direction changer (8) located upward, the sling (7) comprises an inclined section between the direction changer (8) located downward and the heat preservation structure (4), a vertical section between the two direction changers (8), and a horizontal section between the direction changer (8) located upward and the winch (9).

9. The electrolytic cell anode assembly according to any one of claims 1 to 5, characterized in that, The heat preservation structure (4) comprises a heat preservation shell (4-1) and a heat preservation material (4-2) arranged in the heat preservation shell (4-1).

10. An electrolytic cell comprising a cell body (11) and an anode assembly, characterised in that, The anode carbon block (1), the anode steel claw (2) and the anode guide rod (3) are sequentially connected, the anode carbon block (1) is provided with the covering material (5), the anode steel claw (2) or the anode guide rod (3) is provided with the heat preservation structure (4), and the anode steel claw (2) or the anode guide rod (3) is further provided with a driving device in transmission connection with the heat preservation structure (4) to drive the heat preservation structure (4) to act, the heat preservation structure (4) has a heat preservation station in contact with the covering material (5) on the anode carbon block (1) and a heat dissipation station to separate from the covering material on the anode carbon block (1) in an action stroke.

11. The electrolytic cell of claim 10, wherein, The heat preservation structure (4) is hinged on the anode steel claw (2) or the anode guide rod (3), and the driving device drives the heat preservation structure (4) to rotate to switch between the heat preservation station and the heat dissipation station.

12. The electrolytic cell of claim 11, wherein, The driving device comprises a sling (7) connected with the heat preservation structure (4) and a winch (9) connected with the sling (7), and the winch (9) is fixed on the anode guide rod (3).

13. The electrolytic cell of claim 12, wherein, The anode guide rod (3) is provided with a direction changer (8) through or around which the sling (7) passes to change the direction of the sling (7).

14. The electrolytic cell of claim 13, wherein, The heat preservation structure (4) is arranged on both sides of the anode steel claw (2) or the anode guide rod (3), and the two heat preservation structures (4) are respectively connected with the slings (7), and the slings (7) on the two heat preservation structures (4) pass through or around the same direction changer (8) and are connected to the same winch (9).

15. The electrolytic cell defined in any one of claims 11 to 14, characterised in that The anode steel claw (2) comprises a cross beam (2-1) and at least two fixing claws connected to the cross beam (2-1), each fixing claw is embedded in the anode carbon block (1), and the heat preservation structure (4) is hinged to the cross beam (2-1).

16. The electrolytic cell defined in any one of claims 11 to 13, characterised in that The heat preservation structure (4) is arranged on both sides of the anode steel claw (2) or the anode guide rod (3), and the two heat preservation structures (4) comprise a butt joint surface for butt joint contact when in the heat preservation station, so that the two heat preservation structures (4) completely cover the anode carbon block (1) or the covering material (5) when in the heat preservation station.

17. The electrolytic cell of claim 13 or 14, wherein, The direction changer (8) is arranged in an up-down interval along the anode guide rod (3), the winch (9) is located on the lateral side of the upper direction changer (8), and the sling (7) comprises an inclined section between the lower direction changer (8) and the heat preservation structure (4), a vertical section between the two direction changers (8), and a horizontal section between the upper direction changer (8) and the winch (9).

18. The electrolytic cell defined in any one of claims 10 to 14, characterised in that The heat preservation structure (4) comprises a heat preservation shell (4-1) and a heat preservation material (4-2) arranged in the heat preservation shell (4-1).

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