Vertical tank structure with slag baffle in magnesium metal smelting

Abstract

The utility model discloses a vertical tank structure with slag baffles in magnesium metal smelting, and relates to the technical field of magnesium metal smelting equipment. Comprising a vertical tank body, a central pipe is arranged in the vertical tank body, the bottom of the vertical tank body is fixedly connected and communicated with a short connecting piece, the end, away from the vertical tank body, of the short connecting piece is fixedly connected and communicated with a cooling water jacket, a slag baffle is installed in the short connecting piece, and the end, facing the cooling water jacket, of the slag baffle is fixedly connected with a crystallizer. And the crystallizer is arranged in the cooling water jacket. According to the utility model, the crystallizer is arranged below the vertical tank body, so that magnesium steam enters the crystallizer through the central pipe and the slag baffle in sequence, and the mass transfer efficiency is improved; the collection path of crude magnesium is effectively shortened, the separation difficulty is reduced, the production is simplified, the heat loss above the vertical tank body can be reduced, and the overall temperature distribution of the vertical tank body is more uniform, so that the material ball reaction rate is increased; meanwhile, dust and slag can be effectively prevented from entering the crystallizer to pollute original magnesium through the slag baffle.

Description

Technical Field

[0001] This utility model relates to the technical field of magnesium smelting equipment, and in particular to a vertical tank structure with a slag baffle plate for magnesium smelting. Background Technology

[0002] The reduction tank is a key piece of equipment in magnesium metal production, typically installed horizontally within the reduction furnace, hence the name "horizontal tank." Currently, traditional horizontal tanks suffer from drawbacks such as small loading capacity, difficulty in feeding and slag removal, high insulation costs, low production efficiency, and short service life. To overcome these shortcomings, the vertical reduction tank, characterized by large loading capacity, easier operation, and longer service life, has emerged. This type of tank is installed vertically within the reduction furnace, hence the name "vertical tank." However, in existing vertical tanks, the crystallizer is located at the top of the tank, with the bottom connected to the slag discharge end via an insulation section. To ensure smooth magnesium condensation within the crystallizer, a low-temperature zone is usually installed at the top of the reduction tank. This leads to incomplete reaction of some material pellets; in addition, the crystallizer is exposed to the high-temperature environment at the top of the reduction tank for a long time, making it susceptible to thermal stress and shortening its service life; furthermore, material handling or maintenance work must be carried out in a high-temperature environment, which poses a high operational risk; before each feeding reaction, the crystallizer and cooling water jacket must be removed, affecting the service life of the equipment and increasing material consumption; in addition, if the vacuum level is insufficient when magnesium is discharged from the vertical tank, the crystalline magnesium will liquefy and flow through the upper crystallizer into the reduction tank, where it will stick together with the material pellets, making it difficult to clean later and affecting production. This problem is referred to as "tank run-off".

[0003] Therefore, there is an urgent need for a vertical tank structure with slag baffles in magnesium smelting, which can effectively solve the problems existing in the above-mentioned vertical tanks. Utility Model Content

[0004] The purpose of this invention is to provide a vertical tank structure with a slag baffle plate for magnesium smelting, so as to solve the problems existing in the prior art.

[0005] To achieve the above objectives, this utility model provides the following solution: This utility model provides a vertical tank structure with a slag baffle plate for magnesium smelting, including a vertical tank body, a central tube disposed inside the vertical tank body, a short connector fixedly connected and connected to the bottom of the vertical tank body, a cooling water jacket fixedly connected and connected to the end of the short connector away from the vertical tank body, a slag baffle plate installed inside the short connector, and a crystallizer fixedly connected to the end of the slag baffle plate facing the cooling water jacket, the crystallizer being disposed inside the cooling water jacket.

[0006] Preferably, the central tube has a plurality of second magnesium vapor channels evenly distributed in the circumferential direction.

[0007] Preferably, a plurality of material balls are filled between the outer wall of the central tube and the inner wall of the vertical tank body.

[0008] Preferably, the shorting component includes a conical cylinder, the larger end of the conical cylinder being fixedly connected and communicating with the tank body of the vertical tank, the smaller end of the conical cylinder being fixedly connected and communicating with a first cylinder, and the end of the first cylinder away from the conical cylinder being fixedly connected and communicating with the cooling water jacket.

[0009] Preferably, one end of the central tube extending into the conical cylinder abuts against the inner wall of the conical cylinder.

[0010] Preferably, a groove is formed on the inner wall of the first cylinder facing the cooling water jacket, and the slag baffle is slidably connected to the groove.

[0011] Preferably, the slag baffle includes a ring slidably connected to the chute, a disc is fixedly connected inside the ring, a second cylinder is fixedly connected to the center of the disc, a groove for storing slag is formed at the disc between the outer wall of the second cylinder and the inner wall of the ring, and the disc is fixedly connected to the crystallizer.

[0012] Preferably, the second cylinder is open at one end facing the disk, and closed at the other end away from the disk.

[0013] Preferably, the second cylinder has several first magnesium vapor channels opened in the circumferential direction.

[0014] Preferably, the central axes of the central tube, the vertical tank body, the conical cylinder, the first cylinder, the ring, the disk, and the second cylinder are on the same central axis.

[0015] The present invention discloses the following technical effects:

[0016] This invention places the crystallizer below the vertical tank body, allowing magnesium vapor to enter the crystallizer sequentially through the central tube and the baffle plate, effectively improving mass transfer efficiency; it also effectively shortens the collection path of crude magnesium, reduces separation difficulty, and simplifies production; it can also reduce heat loss above the vertical tank body and make the overall temperature distribution of the vertical tank body more uniform, thereby improving the reaction rate of the feed pellets; at the same time, the baffle plate can effectively prevent dust and slag from entering the crystallizer and contaminating the primary magnesium. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1This is a schematic cross-sectional view of the vertical tank structure of this utility model;

[0019] Figure 2 This is a cross-sectional view of the slag-blocking plate of this utility model;

[0020] Figure 3 This is a top view of the slag baffle plate of this utility model;

[0021] Among them, 1. central tube; 2. vertical tank body; 3. conical cylinder; 4. slag baffle; 5. crystallizer; 6. cooling water jacket; 7. first magnesium vapor channel; 8. material ball; 9. groove; 10. second magnesium vapor channel; 11. first cylinder; 12. ring; 13. disc; 14. second cylinder. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0024] Reference Figures 1-3 This utility model discloses a vertical tank structure with a slag baffle plate for magnesium smelting, including a vertical tank body 2, a central tube 1 inside the vertical tank body 2, a short connector fixedly connected and connected to the bottom of the vertical tank body 2, a cooling water jacket 6 fixedly connected and connected to the end of the short connector away from the vertical tank body 2, a slag baffle plate 4 installed inside the short connector, a crystallizer 5 fixedly connected to the end of the slag baffle plate 4 facing the cooling water jacket 6, and the crystallizer 5 is set inside the cooling water jacket 6.

[0025] This invention places the crystallizer 5 below the vertical tank body 2, allowing magnesium vapor to enter the crystallizer 5 sequentially through the central pipe 1 and the baffle plate 4, effectively improving mass transfer efficiency; it also effectively shortens the collection path of crude magnesium, reduces separation difficulty, and simplifies production; it can also reduce heat loss above the vertical tank body 2 and make the overall temperature distribution of the vertical tank body 2 more uniform, thereby improving the reaction rate of the feed pellets; at the same time, the baffle plate 4 can also effectively prevent dust and slag from entering the crystallizer 5 and contaminating the primary magnesium.

[0026] To further optimize the design, several second magnesium vapor channels 10 are evenly distributed around the circumference of the central tube 1.

[0027] To further optimize the design, several material balls 8 are filled between the outer wall of the central tube 1 and the inner wall of the vertical tank body 2.

[0028] The scheme is further optimized. The short connector includes a conical cylinder 3. The end of the conical cylinder 3 with a large opening is fixedly connected to and communicates with the tank body 2 of the vertical tank. The end of the conical cylinder 3 with a small opening is fixedly connected to and communicates with a first cylinder 11. The end of the first cylinder 11 away from the conical cylinder 3 is fixedly connected to and communicates with the cooling water jacket 6.

[0029] The scheme is further optimized so that one end of the central tube 1 that extends into the conical cylinder 3 abuts against the inner wall of the conical cylinder 3.

[0030] To further optimize the design, a groove is provided on the inner wall of the first cylinder 11 facing the cooling water jacket 6, and the slag baffle 4 is slidably connected to the groove.

[0031] The scheme is further optimized. The slag baffle 4 includes a ring 12 that is slidably connected to the chute. A disc 13 is fixedly connected inside the ring 12. A second cylinder 14 is fixedly connected to the center of the disc 13. A groove 9 for storing slag is formed at the disc 13 between the outer wall of the second cylinder 14 and the inner wall of the ring 12. The disc 13 is fixedly connected to the crystallizer 5.

[0032] To prevent magnesium vapor from overflowing from the point where the ring 12 abuts against the groove, a sealing ring is installed at the end of the ring 12 facing the conical cylinder 3. The sealing ring can effectively prevent magnesium vapor from overflowing from the point where the ring 12 abuts against the groove.

[0033] The diameter of the ring 12 is greater than or equal to the outer diameter of the crystallizer 5, so that the crystallizer 5 is located inside the ring 12.

[0034] The thickness of the ring 12 is greater than the thickness of the disk 13, so that the disk 13 is located in the middle of the ring 12, and the two ends of the ring 12 extend out of the disk 13 respectively.

[0035] In a further optimized design, the second cylinder 14 is opened at one end facing the disk 13, and closed at the other end away from the disk 13.

[0036] To further optimize the design, several first magnesium vapor channels 7 are opened in the circumferential direction of the second cylinder 14.

[0037] Magnesium vapor is sequentially introduced into the crystallizer 5 through the opening end of the first magnesium vapor channel 7 and the second cylinder 14, and the slag is stored through the groove 9.

[0038] The first magnesium vapor channels 7 are symmetrically distributed, and the number of the first magnesium vapor channels 7 is 4 or 6 channels.

[0039] The scheme was further optimized so that the central axes of the central tube 1, the vertical tank body 2, the conical cylinder 3, the first cylinder 11, the ring 12, the disc 13, and the second cylinder 14 are on the same central axis.

[0040] To facilitate the installation and disassembly of the central tube 1 and the baffle plate 4, the top surface of the vertical tank body 2 is detachably connected to an upper insulation end cover, and the end of the cooling water jacket 6 away from the first cylinder 11 is detachably connected to a lower insulation end cover. By removing the upper insulation end cover, it is convenient to install and disassemble the central tube 1, and at the same time, it is convenient to pick up and put down the material balls 8; by removing the lower insulation cover, it is convenient to install and disassemble the baffle plate 4 and the crystallizer 5.

[0041] Work process:

[0042] The calcined white metal is mixed with a certain amount of ferrosilicon and pressed into pellets 8. The pellets 8 are then loaded into the vertical tank 2. The vertical tank 2 is heated to 1250℃-1350℃ by an induction coil around it. After 5-8 hours, the raw materials in the pellets 8 undergo a reduction reaction to produce magnesium vapor. The magnesium vapor first flows downward through the second magnesium vapor channel 10 on the central tube 1, and then is guided downward through the first magnesium vapor channel 7 on the baffle plate 4 to flow into the crystallizer 5. After condensation, it forms primary magnesium. The dust and slag generated during the loading and reaction process fall into the groove 9.

[0043] After the reduction reaction is completed, the lower insulation end cover is opened, and the crystallizer 5 and the slag baffle 4 are removed together using mechanical equipment; the work of collecting crude magnesium and cleaning the slag baffle 4 is completed; then the upper insulation end cover is opened, and the central tube 1 is lifted by the lifting equipment, and the slag automatically falls into the pre-prepared slag hopper for collection; then the slag baffle 4 and the crystallizer 5 are put back into the vertical tank body 2, and the material balls 8 are loaded from the top of the vertical tank body 2 to complete the next reduction reaction.

[0044] This invention can effectively replace the traditional horizontal tank Pijang process magnesium reduction equipment and optimize the existing vertical tank reduction equipment.

[0045] This invention makes the magnesium smelting process more convenient, effectively improves the service life of the vertical tank 2 and the crystallizer 5, enhances the quality of primary magnesium, increases the reduction rate of the feed pellets 8, and improves the efficiency of material handling and slag removal.

[0046] This utility model features a simple structure and a novel, rationally designed magnesium vapor channel, allowing magnesium vapor to crystallize downwards below the vertical tank body 2, avoiding problems such as tank overflow. It also prevents dust and slag from obstructing the first magnesium vapor channel 7. The baffle plate 4 effectively receives raw materials and slag entering the central tube 1, preventing them from entering the crystallizer 5 and ensuring the purity of the original magnesium. Furthermore, it further improves the safety and efficiency of slag discharge operations, simplifies production procedures, extends equipment lifespan, and reduces smelting production costs.

[0047] In the description of this utility model, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0048] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. A vertical vessel structure with a slag dam in the smelting of metallic magnesium, characterized in that: The system includes a vertical tank body (2), a central tube (1) is provided inside the vertical tank body (2), a short connector is fixedly connected and connected to the bottom of the vertical tank body (2), a cooling water jacket (6) is fixedly connected and connected to the end of the short connector away from the vertical tank body (2), a slag baffle (4) is installed inside the short connector, and a crystallizer (5) is fixedly connected to the end of the slag baffle (4) facing the cooling water jacket (6), and the crystallizer (5) is located inside the cooling water jacket (6).

2. A vertical vessel structure with a slag dam in the smelting of metallic magnesium according to claim 1, characterized in that: The central tube (1) is provided with several second magnesium vapor channels (10) evenly distributed in the circumferential direction.

3. The vertical vessel structure with a slag dam in the smelting of metallic magnesium according to claim 1, characterized in that: The space between the outer wall of the central tube (1) and the inner wall of the vertical tank body (2) is filled with several material balls (8).

4. The vertical vessel configuration with a weir for magnesium metal smelting according to claim 1, characterized in that: The short connector includes a conical cylinder (3), the larger end of the conical cylinder (3) is fixedly connected to and communicates with the vertical tank body (2), the smaller end of the conical cylinder (3) is fixedly connected to and communicates with a first cylinder (11), and the end of the first cylinder (11) away from the conical cylinder (3) is fixedly connected to and communicates with the cooling water jacket (6).

5. A vertical vessel configuration with a weir in the smelting of metallic magnesium according to claim 4, characterized in that: One end of the central tube (1) that extends into the conical cylinder (3) abuts against the inner wall of the conical cylinder (3).

6. A vertical vessel structure with a slag dam in the smelting of metallic magnesium according to claim 4, characterized in that: The first cylinder (11) has a groove on the inner wall of the side facing the cooling water jacket (6), and the slag baffle (4) is slidably connected to the groove.

7. A vertical vessel configuration with a skimmer in a magnesium metal smelting process according to claim 6, characterized in that: The baffle plate (4) includes a ring (12) slidably connected to the chute. A disc (13) is fixedly connected inside the ring (12). A second cylinder (14) is fixedly connected to the center of the disc (13). A groove (9) for storing slag is formed between the outer wall of the second cylinder (14) and the inner wall of the ring (12) at the disc (13). The disc (13) is fixedly connected to the crystallizer (5).

8. A vertical vessel structure with a slag dam in a magnesium metal smelting process according to claim 7, characterized in that: The second cylinder (14) is open at one end facing the disk (13), and closed at the other end away from the disk (13).

9. A vertical vessel structure with a slag dam in the smelting of metallic magnesium according to claim 7, characterized in that: The second cylinder (14) has several first magnesium vapor channels (7) opened in the circumferential direction.

10. The vertical vessel configuration with a slag dam in the smelting of metallic magnesium according to claim 7, characterized in that: The central axes of the central tube (1), the vertical tank body (2), the conical cylinder (3), the first cylinder (11), the ring (12), the disc (13), and the second cylinder (14) are on the same central axis.

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