Prefabricated baffle brick for reducing prebaked anode aluminum center joint precipitation and application method
By designing prefabricated baffles with active heat dissipation mechanisms, the problems of material intrusion and heat dissipation in the anode seam were solved, thereby improving the stability and efficiency of the electrolytic cell.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- QINGTONGXIA ALUMINUM GRP
- Filing Date
- 2026-01-29
- Publication Date
- 2026-04-14
AI Technical Summary
The existing retaining bricks are not compatible with the anode joint, and cannot prevent the covering material from entering or ensure effective heat dissipation, making it difficult to solve the problem of sedimentation in the joint.
Design a prefabricated retaining brick, including a retaining brick body, a material outlet, a central cavity, a through hole, and a movable heat dissipation mechanism. The movable plate is tilted by a bubble-driven lifting rod to remove the covering material, ensuring heat dissipation capacity, and leaving a reaction space in the anode central cavity.
It effectively prevents the covering material from entering the anode gap, maintains the stability of the electrolyzer, ensures the electrolyte reaction space, improves heat dissipation efficiency, and extends the life of the electrolyzer.
Smart Images
Figure CN121853073A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of electrolytic cell technology, specifically to a prefabricated retaining brick and its application method for reducing precipitation in the seams of prebaked anode aluminum. Background Technology
[0002] Deposition in the anode seam is a key factor restricting the operational stability of aluminum electrolysis cells. Its presence not only disrupts the design boundaries of the electrolysis cell but also distorts and deteriorates the originally optimized physical field, affecting electrolysis efficiency and cell lifespan. Traditional baffles are difficult to adapt to the special working conditions of the anode seam, and the covering material adhering to the surface of the baffles further hinders heat dissipation in the anode seam area, exacerbating fluctuations in electrolysis cell operation.
[0003] In the prior art, CN117211327A discloses a retaining wall brick. This retaining wall brick body adopts a central axis symmetrical structure with a cavity in the middle, and is equipped with a front wall, rear seat, left embankment, and right embankment. Laterally symmetrical side wings are provided on both sides of the body. The top surfaces of the left and right embankments are constructed with a variable slope locking structure. This structure includes a front protrusion, a rear protrusion arranged on the side embankment, and a groove formed between the two protrusions. The groove extends into the cavity with a limiting block; the width of the limiting block is smaller than the width of the groove. Based on this variable slope locking structure, the retaining wall bricks can be stacked to form three single retaining wall forms—vertical, steep slope, and gentle slope—as well as combined forms, meeting the on-site requirements for stacking retaining walls with different slopes.
[0004] However, the aforementioned technologies are unsuitable for shielding the anode seam. When covering the anode seam of an aluminum electrolysis cell, they fail to provide sufficient space for electrolyte reactions, cannot guarantee effective heat dissipation on the surface of the baffle, and cannot prevent the covering material from intruding into the anode seam, thus failing to fundamentally solve the problem of seam sedimentation. Therefore, there is an urgent need for a prefabricated baffle that can cover the anode seam of an aluminum electrolysis cell, prevent the covering material from entering, maintain regional heat dissipation performance, and thereby reduce sedimentation in the prebaked anode aluminum seam. Summary of the Invention
[0005] The present invention aims to provide a solution to the problem that existing retaining bricks have poor adaptability and cannot meet the requirements of electrolyte reaction, heat dissipation and prevention of cover material intrusion in the anode seam.
[0006] To achieve the above objectives, the present invention adopts the following technical solution: a prefabricated retaining brick for reducing sedimentation in the seam of prebaked anode aluminum, characterized in that: it includes a retaining brick body, a feeding port, and a seam cavity; multiple feeding ports are provided on one side of the retaining brick body, and a seam cavity is provided at the bottom of the retaining brick body; a through hole is provided through the top of the retaining brick body, and a movable heat dissipation mechanism is movably installed through the top of the through hole; the movable heat dissipation mechanism includes a lifting rod and a round rod; the lifting rod is a cylindrical rod with a thicker upper end and a thinner lower end; the lifting rod is located inside the through hole, and the top of the lifting rod penetrates through the top of the retaining brick body; round rods are symmetrically installed on the outer side of the lifting rod.
[0007] Preferably, as an improvement, pull rings are symmetrically installed on the top of the brick retainer body.
[0008] Preferably, as an improvement, a connecting frame is movably mounted on the outer side of the round rod, and a movable plate is mounted on one side of the connecting frame.
[0009] Preferably, as an improvement, multiple springs are symmetrically installed on the top of the brick retainer body, with a movable rod installed at one end of each spring, and the movable rod is located above the movable plate. A brush is installed on the outside of the movable rod.
[0010] Preferably, as an improvement, the top of the retaining brick body is provided with multiple insertion holes, and an insertion rod is movably installed inside the insertion holes, with the insertion rod penetrating the top of the retaining brick body.
[0011] Preferably, as an improvement, the retaining brick body is made of the following raw materials in parts by weight: 30-80 parts alumina, 10-50 parts cryolite, 5-30 parts aluminum fluoride, and 30-50 parts aluminum sol binder.
[0012] Another object of the present invention is to provide a method for applying precast retaining bricks to reduce sedimentation in the seams of prebaked anode aluminum, comprising the following steps: S1: The baffle brick body is tightly covered at a suitable angle above the anode seam of the electrolytic cell, that is, above the anode shell, and the material outlet is the material distribution outlet; S2: After covering the brick body, immediately lay the material. The thickness of the covering material should be controlled within 5cm, and the height should be 1cm lower than the process control benchmark. Due to the height difference between adjacent poles, the scrap material of the new pole may not be fully laid to avoid increasing the thickness of the covering material of the low pole. S3: The movable plate prevents the top part of the brick retainer body from being covered by the covering material. Then, when the temperature rises in the anode seam in the anode shell, the liquid generates bubbles. The bubbles rise and enter the through hole, lifting the lifting rod, which in turn causes the movable plate to tilt. This causes the covering material falling on the movable plate to slide off the movable plate, thus ensuring that the top part of the brick retainer body and the top of the movable plate are not covered by the covering material, ensuring that the brick retainer body has a certain heat dissipation capacity.
[0013] Another objective of this invention is to provide a method for preparing precast retaining bricks that reduce precipitation in the seams of prebaked anode aluminum, comprising the following steps: (1) Mix 30-80 parts by weight of alumina, 10-50 parts by weight of cryolite, 5-30 parts by weight of aluminum fluoride and 30-50 parts by weight of aluminum sol binder and grind them into powder, then add 5-20 parts by weight of water to make a slurry. (2) The clay is placed into a stainless steel mold and extruded into shape by a brick making machine. After being air-dried, the green body is obtained. (3) The blank is placed in a brick kiln for firing at a temperature greater than 800°C and the holding time at that temperature is greater than 30 minutes. After cooling, the precast retaining brick is obtained.
[0014] Compared with the prior art, the beneficial effects of the present invention are: 1. This invention prevents the covering material from entering the middle of the anode seam and forming a deposit by covering the anode seam with a retaining brick body, thereby maintaining the stability of the aluminum electrolysis cell, ensuring the electrolysis cell operates at a high temperature for a long time, and the design of the feed port ensures that the electrolyte can enter the middle of the anode seam, and the middle seam cavity ensures that the electrolyte has reaction space in the anode seam.
[0015] 2. In this invention, when the temperature rises in the anode seam within the anode casing, bubbles are generated in the liquid. These bubbles rise and enter the through hole, lifting the lifting rod and causing the movable plate to tilt. This causes the covering material falling on the movable plate to slide off the movable plate, ensuring that the top part of the brick body and the top of the movable plate are not covered by the covering material, thus ensuring that the brick body has a certain heat dissipation capacity.
[0016] 3. When the movable plate is tilted upward, the movable rod scrapes off the covering material in a portion of the top area of the movable plate, thus avoiding the problem of poor heat dissipation caused by the top of the movable plate being completely covered by the covering material. Attached Figure Description
[0017] Figure 1 This is a perspective view of the present invention; Figure 2 This is a schematic diagram of the bottom structure of the retaining brick body of the present invention; Figure 3 This is a front sectional view of the brick retaining body of the present invention; Figure 4 This is a schematic diagram of the movable plate structure of the present invention; Figure 5 This is a schematic diagram of the application structure of the brick retaining body of the present invention. Detailed Implementation
[0018] The following detailed description illustrates the specific implementation method: The reference numerals in the accompanying drawings of the instruction manual include: 1. brick block body, 2. material outlet, 3. central cavity, 4. pull ring, 5. lifting rod, 6. round rod, 7. movable plate, 8. connecting frame, 9. spring, 10. movable rod, 11. brush, 12. plug-in rod, 13. through hole, 14. plug-in hole, 15. anode shell.
[0019] Example The basic implementation examples are as follows: Figures 1-5 As shown, Figures 1-2The prefabricated baffle brick shown is for reducing precipitation in the center seam of prebaked anode aluminum. It includes a baffle brick body 1, a feeding port 2, and a center seam cavity 3. Multiple feeding ports 2 are opened on one side of the baffle brick body 1, and a center seam cavity 3 is opened at the bottom of the baffle brick body 1. Pull rings 4 are symmetrically installed on the top of the baffle brick body 1. The baffle brick body 1 is used to shield the top of the anode shell 15. The anode shell 15 forms an anode center seam between two anodes. The feeding port 2 provides a path for new electrolyte alumina to enter below the baffle brick body 1. The electrolyte enters the center seam cavity 3 from the feeding port 2 for electrolysis. When changing electrodes, the baffle brick body 1 is pulled up by pulling the pull rings 4, and then the anode below the baffle brick body 1 can be easily replaced.
[0020] like Figure 1 , Figures 3-4 As shown, it also includes a movable heat dissipation mechanism. A through hole 13 is provided through the top of the baffle body 1, and a movable heat dissipation mechanism is movably installed through the top of the through hole 13. The movable heat dissipation mechanism includes a lifting rod 5 and a round rod 6. The lifting rod 5 is a cylindrical rod that is thicker at the top and thinner at the bottom. The lifting rod 5 is located inside the through hole 13, and the top of the lifting rod 5 penetrates through the top of the baffle body 1. A round rod 6 is symmetrically installed on the outside of the lifting rod 5. A connecting frame 8 is movably installed on the outside of the round rod 6. A movable plate 7 is installed on one side of the connecting frame 8. When the heat released by the electrolytic reaction below the baffle body 1 increases, the liquid is heated and vaporized to produce bubbles. The bubbles enter the through hole 13 and then lift the lifting rod 5, thereby driving the round rod 6 to move upward, and then driving the connecting frame 8 to move upward, so that the movable plate 7 tilts upward, causing the covering material above the movable plate 7 to slide off, avoiding the situation where the movable plate 7 is covered by the covering material, resulting in slow heat dissipation efficiency.
[0021] It also includes springs 9 and movable rods 10. Multiple springs 9 are symmetrically installed on the top of the brick block body 1. Movable rods 10 are installed on one end of springs 9 and are located above movable plate 7. Brushes 11 are installed on the outside of movable rods 10. When movable plate 7 is tilted upward, it can lift movable rods 10, so that movable rods 10 can slide on the top of movable plate 7, thereby allowing brushes 11 to clean a part of the top area of movable plate 7, further reducing the covering material on the top of movable plate 7. Then, under the pulling force of springs 9, movable rods 10 are pulled down, thereby causing movable plate 7 to move downward.
[0022] like Figure 1 , Figure 3 , Figure 4 and Figure 5As shown, it also includes insertion holes 14 and insertion rods 12. Multiple insertion holes 14 are provided through the top of the brick retainer body 1. Insertion rods 12 are movably installed inside the insertion holes 14, and the insertion rods 12 penetrate the top of the brick retainer body 1. When two brick retainer bodies 1 are joined together, the insertion rods 12 are inserted into the insertion holes 14, thus ensuring that the two brick retainer bodies 1 are tightly connected and will not separate. The brick retainer body 1 is composed of 30-80 parts by weight of alumina, 10-50 parts of cryolite, 5-30 parts of aluminum fluoride, and 30-50 parts of aluminum sol binder.
[0023] A method for applying precast retaining bricks to reduce sedimentation in the joints of prebaked anode aluminum includes the following steps: S1: The baffle brick body is tightly covered at a suitable angle above the anode seam of the electrolytic cell, that is, above the anode shell, and the material outlet is the material distribution outlet; S2: After covering the brick body, immediately lay the material. The thickness of the covering material should be controlled within 5cm, and the height should be 1cm lower than the process control benchmark. Due to the height difference between adjacent poles, the scrap material of the new pole may not be fully laid to avoid increasing the thickness of the covering material of the low pole. S3: The movable plate prevents the top part of the brick retainer body from being covered by the covering material. Then, when the temperature rises in the anode seam in the anode shell, the liquid generates bubbles. The bubbles rise and enter the through hole, lifting the lifting rod, which in turn causes the movable plate to tilt. This causes the covering material falling on the movable plate to slide off the movable plate, thus ensuring that the top part of the brick retainer body and the top of the movable plate are not covered by the covering material, ensuring that the brick retainer body has a certain heat dissipation capacity.
[0024] S31: When the movable plate is tilted upward, the movable rod scrapes off the covering material from the top part of the movable plate.
[0025] A method for preparing precast retaining bricks to reduce precipitation in the joints of prebaked anode aluminum includes the following steps: (1) Mix 30-80 parts by weight of alumina, 10-50 parts by weight of cryolite, 5-30 parts by weight of aluminum fluoride and 30-50 parts by weight of aluminum sol binder and grind them into powder, then add 5-20 parts by weight of water to make a slurry. (2) The clay is placed into a stainless steel mold and extruded into shape by a brick making machine. After being air-dried, the green body is obtained. (3) The blank is placed in a brick kiln for firing at a temperature greater than 800°C and the holding time at that temperature is greater than 30 minutes. After cooling, the precast retaining brick is obtained.
[0026] The specific implementation method is as follows: Before using the prefabricated baffle brick to reduce precipitation in the anode seam of prebaked aluminum, it should be checked whether there are any problems that affect its use. The baffle brick body 1 should be tightly covered at a suitable angle above the anode seam of the electrolytic cell, that is, above the anode shell 15. After covering the baffle brick body 1, the material should be laid immediately. The thickness of the covering material should be controlled within 5cm, and the height should be 1cm lower than the process control benchmark. Due to the height difference between adjacent electrodes, the scrap material of the new electrode may not be fully laid to avoid increasing the thickness of the covering material of the lower electrode. The movable plate 7 should prevent the top part of the baffle brick body 1 from being covered by the covering material. Then, the anode shell 1... When the temperature rises in the anode seam of 5, bubbles are generated in the liquid. The bubbles rise and enter the through hole 13, lifting the lifting rod 5, which in turn causes the movable plate 7 to tilt. This causes the covering material falling on the movable plate 7 to slide off the movable plate 7, thus ensuring that the top part of the brick block body 1 and the top of the movable plate 7 are not covered by the covering material, ensuring that the brick block body 1 has a certain heat dissipation capacity. When the movable plate 7 tilts upward, the movable rod 10 slides on the top of the movable plate 7, which causes the brush 11 to scrape off the covering material in the top part of the movable plate 7, avoiding the problem of low heat dissipation capacity caused by the top of the movable plate 7 being completely covered by the covering material.
[0027] The above descriptions are merely embodiments of the present invention, and common knowledge such as specific technical solutions and / or characteristics are not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the technical solutions of the present invention, and these should also be considered within the scope of protection of the present invention. These modifications and improvements will not affect the effectiveness of the implementation of the present invention or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.
Claims
1. A precast retaining brick for reducing sedimentation in the seams of prebaked anode aluminum, characterized in that: It includes a brick-blocking body, a material outlet, and a central cavity. Multiple material outlets are provided on one side of the brick-blocking body, and a central cavity is provided at the bottom of the brick-blocking body. The top of the brick retainer body has a through hole, and a movable heat dissipation mechanism is movably installed through the top of the through hole. The movable heat dissipation mechanism includes a lifting rod and a round rod. The lifting rod is a cylindrical rod that is thicker at the top and thinner at the bottom. The lifting rod is located inside the through hole, and the top of the lifting rod penetrates through the top of the brick retainer body. Round rods are symmetrically installed on the outside of the lifting rod.
2. The precast retaining brick for reducing precipitation in the seams of prebaked anode aluminum according to claim 1, characterized in that: Pull rings are symmetrically installed on the top of the brick retainer body.
3. A precast retaining brick for reducing sedimentation in the seams of prebaked anode aluminum according to claim 1, characterized in that: A connecting frame is movably installed on the outer side of the round rod, and a movable plate is installed on one side of the connecting frame.
4. A precast retaining brick for reducing sedimentation in the seams of prebaked anode aluminum according to claim 3, characterized in that: Multiple springs are symmetrically installed on the top of the brick retainer body. A movable rod is installed at one end of each spring, and the movable rod is located above the movable plate. A brush is installed on the outside of the movable rod.
5. A precast retaining brick for reducing sedimentation in the seams of prebaked anode aluminum according to claim 1, characterized in that: The top of the brick retainer body has multiple insertion holes, and insertion rods are movably installed inside the insertion holes, with the insertion rods penetrating the top of the brick retainer body.
6. A precast retaining brick for reducing precipitation in the seams of prebaked anode aluminum according to claim 1, characterized in that: The retaining brick body is made of the following raw materials by weight: 30-80 parts alumina, 10-50 parts cryolite, 5-30 parts aluminum fluoride, and 30-50 parts aluminum sol binder.
7. The application method of precast retaining bricks for reducing precipitation in the joints of prebaked anode aluminum according to any one of claims 1-6, characterized in that, Includes the following steps: S1: The baffle body is tightly covered at a suitable angle above the anode seam of the electrolytic cell, that is, above the anode shell, and the material outlet is the material distribution outlet; S2: After covering the brick body, immediately lay the material. The thickness of the covering material should be controlled within 5cm, and the height should be 1cm lower than the process control benchmark. Due to the height difference between adjacent poles, the scrap material of the new pole may not be fully laid to avoid increasing the thickness of the covering material of the low pole. S3: The movable plate prevents the top part of the brick retainer body from being covered by the covering material. Then, when the temperature rises in the anode seam in the anode shell, the liquid generates bubbles. The bubbles rise and enter the through hole, lifting the lifting rod, which in turn causes the movable plate to tilt. This causes the covering material falling on the movable plate to slide off the movable plate, thus ensuring that the top part of the brick retainer body and the top of the movable plate are not covered by the covering material, ensuring that the brick retainer body has a certain heat dissipation capacity.
8. The application method of precast retaining bricks for reducing precipitation in the joints of prebaked anode aluminum according to claim 7, characterized in that: S3 also includes the following steps: S31: When the movable plate is tilted upward, the movable rod scrapes off the covering material from the top part of the movable plate.
9. A method for preparing a prefabricated retaining brick for reducing precipitation in the gaps of prebaked anode aluminum, used to prepare the prefabricated retaining brick for reducing precipitation in the gaps of prebaked anode aluminum as described in claim 1 or 6, characterized in that, Includes the following steps: (1) Mix 30-80 parts by weight of alumina, 10-50 parts by weight of cryolite, 5-30 parts by weight of aluminum fluoride and 30-50 parts by weight of aluminum sol binder and grind them into powder, then add 5-20 parts by weight of water to make a slurry. (2) The clay is placed into a stainless steel mold and extruded into shape by a brick making machine. After being air-dried, the blank is obtained. (3) The blank is placed in a brick kiln for firing at a temperature greater than 800°C and the holding time at that temperature is greater than 30 minutes. After cooling, the precast retaining brick is obtained.