Coarse magnesium collecting device in magnesium discharged from bottom of vertical tank

Abstract

The utility model discloses a coarse magnesium collecting device in magnesium discharged from the bottom of a vertical tank, which belongs to the technical field of magnesium smelting devices and comprises a water jacket inner cylinder with two open ends, the top of the water jacket inner cylinder is used for being communicated with an inner cavity of a vertical reduction tank, and magnesium steam in the vertical reduction tank enters the water jacket inner cylinder; the cooling crystallization assembly is arranged on the cylinder wall of the water jacket inner cylinder, and the cooling crystallization assembly is used for cooling and vacuumizing the inner cavity of the water jacket inner cylinder; the collecting mechanism comprises a lower end cover and a crystal collecting barrel, the crystal collecting barrel is arranged at the top of the lower end cover, a lifting assembly is arranged at the bottom of the lower end cover, and the crystal collecting barrel enters and exits the water jacket inner barrel from the bottom of the water jacket inner barrel through the lifting assembly; the fixing assembly is arranged on the water jacket inner cylinder, and the fixing assembly is detachably connected with the lower end cover. An additional discharging platform does not need to be configured, the occupied area is reduced, the crystal collecting barrel is easy to load and unload, manual intervention is reduced, and the working efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the technical field of magnesium smelting equipment, and in particular to a device for collecting coarse magnesium from the bottom of a vertical tank. Background Technology

[0002] Magnesium smelting primarily employs the silicothermic process (such as the Pidgeon process), with the reduction tank being its core equipment. Traditional horizontal reduction tanks, due to limitations in loading capacity, low feeding and slag removal efficiency, and high heat loss, are gradually being replaced by vertical reduction tanks. The vertical reduction tank structure typically includes a heat-resistant tank body, sealed and insulated end caps, a central heating pipe, and a side-mounted crystallizer. This technology improves reduction efficiency through mechanized loading and central heating design, offering advantages over traditional horizontal tanks such as uniform heat conduction and higher single-tank capacity.

[0003] Existing vertical reduction tanks still face the following technical bottlenecks:

[0004] 1. Crystallizers are usually installed on the side below the reduction tank and require a dedicated discharge platform, resulting in a large footprint and making it unsuitable for large-scale production layouts with multiple tanks in parallel.

[0005] 2. The loading and unloading of the crystallizer requires manual intervention, and there are safety hazards in operating under high temperature conditions, resulting in insufficient automation.

[0006] Therefore, a device for collecting coarse magnesium from the bottom of a vertical tank is proposed. Utility Model Content

[0007] The purpose of this invention is to provide a device for collecting coarse magnesium from the bottom of a vertical tank, which aims to solve or improve at least one of the above-mentioned technical problems.

[0008] To achieve the above objectives, this utility model provides the following solution: This utility model provides a device for collecting coarse magnesium from the bottom of a vertical tank, comprising:

[0009] A water jacket inner cylinder has openings at both ends, and the top of the water jacket inner cylinder is used to communicate with the inner cavity of the vertical reduction tank, through which magnesium vapor in the vertical reduction tank enters the water jacket inner cylinder.

[0010] A cooling crystallization assembly is disposed on the cylinder wall of the inner cylinder of the water jacket. The cooling crystallization assembly is used to cool the inner cavity of the inner cylinder of the water jacket and to evacuate it.

[0011] The collection mechanism includes a lower end cover and a crystallization collection bucket. The crystallization collection bucket is located on the top of the lower end cover and has an open top. A lifting component is provided at the bottom of the lower end cover, through which the crystallization collection bucket enters and exits the water jacket inner cylinder from the bottom.

[0012] A fixing component is disposed on the inner cylinder of the water jacket, and the fixing component is detachably connected to the lower end cover.

[0013] Preferably, the cooling crystallization assembly includes a cooling water jacket, which is fixedly sleeved on the outer wall of the inner cylinder of the water jacket, and circulating cooling water is introduced into the cooling water jacket; a vacuum assembly is provided on the cooling water jacket.

[0014] Preferably, the vacuum assembly includes a vacuum tube fixed to the cooling water jacket, one end of which passes through the cooling water jacket and the inner wall of the inner cylinder of the water jacket in sequence and communicates with the inner cavity of the inner cylinder of the water jacket, and the other end is fixed to a vacuum pump.

[0015] Preferably, the lifting assembly includes a scissor lift, the lower end cover is fixed to the top of the scissor lift, and the scissor lift is fixed to the moving trolley.

[0016] Preferably, an annular upper end cap is fixed to the bottom of the outer wall of the inner wall of the water jacket. When the lower end cap is tightly fitted to the bottom of the inner wall of the water jacket, the upper end cap is also tightly fitted to the lower end cap. The fixing component includes a plurality of driving members fixed to the upper end cap, and a pressure block is fixed to the output end of the driving member.

[0017] When the upper end cover and the lower end cover need to be tightly sealed, the driving member drives the pressure block to rotate to below the lower end cover and then rise to abut against the bottom of the lower end cover; when the upper end cover and the lower end cover need to be separated, the driving member drives the pressure block to descend and then rotate away from the bottom of the lower end cover.

[0018] Preferably, the upper end cover is also fixedly connected with a plurality of positioning cylinders. When the upper end cover and the lower end cover need to be tightly sealed, the piston rod of the positioning cylinder extends horizontally and abuts against the bottom of the lower end cover. When the upper end cover and the lower end cover need to be separated, the piston rod of the positioning cylinder retracts away from the bottom of the lower end cover.

[0019] Preferably, a potassium-sodium collection cover is provided between the lower end cover and the crystallization collection bucket, the potassium-sodium collection cover is placed on top of the lower end cover, and the bottom of the crystallization collection bucket is open and placed on top of the potassium-sodium collection cover.

[0020] Preferably, a guide sleeve is fixedly connected to the top of the lower end cover, the potassium-sodium collection cover is located inside the guide sleeve, and the height of the crystallization collection bucket is higher than the height of the guide sleeve.

[0021] This utility model discloses the following technical advantages: In a vertical reduction tank, the feed pellets evaporate upon heating to form magnesium vapor. The magnesium vapor flows into the lower water jacket inner cylinder and is cooled and crystallized by a cooling crystallization component. The crystallized medium-coarse magnesium falls into a crystallization collection bucket. During removal, a fixing component separates the water jacket inner cylinder from the lower end cover, and then a lifting component removes the crystallization collection bucket from the water jacket inner cylinder, thus completing the collection and removal of coarse magnesium. This application eliminates the need for an additional discharge platform, reducing the occupied area. The loading and unloading of the crystallization collection bucket is simple, reducing manual intervention and improving work efficiency. Attached Figure Description

[0022] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments and descriptions of this application are used to explain this application and do not constitute an undue limitation of this application. In the drawings:

[0023] Figure 1 This is a schematic diagram of the structure of the water jacket inner cylinder of this utility model installed in a vertical reduction tank;

[0024] Figure 2 This is a schematic diagram of the structure of this utility model;

[0025] Figure 3 This is a top view of the present invention;

[0026] Figure 4 This is a schematic diagram of the positioning cylinder in this utility model.

[0027] In the diagram: 1. Cooling water jacket; 2. Inner cylinder of the water jacket; 3. Crystallization collection tank; 4. Guide sleeve; 5. Vacuum tube; 6. Crystallizer lifting lug; 7. Potassium and sodium collection cover; 8. Positioning cylinder; 9. Drive component; 10. Lower end cover; 11. Upper end cover; 12. Scissor lift; 13. Vertical reduction tank; 14. Central tube; 15. Material ball; 16. Press block. Detailed Implementation

[0028] 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.

[0029] 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.

[0030] Reference Figures 1-4This utility model provides a device for collecting coarse magnesium from the bottom of a vertical tank, comprising:

[0031] Water jacket inner cylinder 2, with openings at both ends, and the top of water jacket inner cylinder 2 is used to communicate with the inner cavity of vertical reduction tank 13, so that magnesium vapor in vertical reduction tank 13 enters water jacket inner cylinder 2.

[0032] Cooling crystallization assembly: The cooling crystallization assembly is installed on the cylinder wall of the inner cylinder 2 of the water jacket. The cooling crystallization assembly is used to cool down the inner cavity of the inner cylinder 2 of the water jacket and to evacuate it.

[0033] The collection mechanism includes a lower end cover 10 and a crystallization collection tank 3. The crystallization collection tank 3 is located on the top of the lower end cover 10. The top of the crystallization collection tank 3 is open. A lifting component is provided at the bottom of the lower end cover 10. The crystallization collection tank 3 enters and exits the water jacket inner cylinder 2 from the bottom through the lifting component.

[0034] The fixing component is installed on the inner cylinder 2 of the water jacket and is detachably connected to the lower end cover 10.

[0035] In this embodiment, the vertical reduction tank 13 has a discharge port at its bottom. The water jacket inner cylinder 2 is fixedly connected to the bottom of the discharge port. A central tube 14 is fixedly connected to the discharge port. There is a gap between the top of the central tube 14 and the inner top wall of the vertical reduction tank 13. An annular cavity is formed between the outer wall of the central tube 14 and the inner wall of the vertical reduction tank 13. The material ball 15 is placed in the annular cavity and heated by the heating structure on the vertical reduction tank 13. The material ball 15 evaporates due to the heat, forming magnesium vapor. The magnesium vapor enters the water jacket inner cylinder 2 through the central tube 14 and is cooled and crystallized under the action of the cooling crystallization component. The crystallized medium and coarse magnesium falls into the crystallization collection bucket 3 under the action of gravity. When removing it, the water jacket inner cylinder 2 is separated from the lower end cover 10 by the fixing component, and then the crystallization collection bucket 3 is lowered from the water jacket inner cylinder 2 by the lifting component, thereby completing the removal and collection of coarse magnesium. This application eliminates the need for an additional discharge platform, reducing the footprint. The loading and unloading of the crystallization collection tank is simple, minimizing manual intervention and improving work efficiency.

[0036] In some optional embodiments, the cooling crystallization assembly includes a cooling water jacket 1, which is fixedly sleeved on the outer wall of the inner cylinder 2 of the water jacket, and circulating cooling water is introduced into the cooling water jacket 1; a vacuum assembly is provided on the cooling water jacket 1.

[0037] The cooling water jacket 1 is provided with an inlet and an outlet. The inlet is connected to an external water source through a water pump. The water pump pumps the external water source into the cooling water jacket 1 for cooling, thereby achieving the cooling and crystallization of magnesium vapor. The cooled water flows out through the outlet.

[0038] In some optional embodiments, the vacuum assembly includes a vacuum tube 5 fixedly attached to the cooling water jacket 1. One end of the vacuum tube 5 passes through the cooling water jacket 1 and the side wall of the inner cylinder 2 of the water jacket in sequence and communicates with the inner cavity of the inner cylinder 2 of the water jacket. The other end is fixedly attached to a vacuum pump. The vacuum pump is used to draw a vacuum to ensure the vacuum level of the vertical reduction tank 13.

[0039] In some alternative embodiments, the lifting assembly includes a scissor lift 12, with a lower end cover 10 fixed to the top of the scissor lift 12, which is fixed to a mobile trolley.

[0040] The scissor lift 12 is a mechanical lifting device, its main component being a scissor structure consisting of two or more scissor arms. The scissor arms are extended and retracted by hydraulic cylinders to achieve the lifting function. Scissor lifts have advantages such as high load-bearing capacity, high lifting height, and stable operation (specific details are existing technology and will not be elaborated here). By fixing the scissor lift 12 to a mobile trolley, a vehicle-mounted scissor lift is formed, thus enabling the scissor lift to be moved.

[0041] In some optional embodiments, an annular upper end cap 11 is fixedly connected to the bottom of the outer wall of the inner wall of the water jacket 2. When the lower end cap 10 is tightly fitted to the bottom of the inner wall of the water jacket 2, the upper end cap 11 is also tightly fitted to the lower end cap 10. The fixing component includes a plurality of driving members 9 fixedly connected to the upper end cap 11, and a pressure block 16 is fixedly connected to the output end of the driving member 9.

[0042] When the upper cover 11 and the lower cover 10 need to be tightly sealed, the driving component 9 drives the pressure block 16 to rotate below the lower cover 10 and then rise to abut against the bottom of the lower cover 10; when the upper cover 11 and the lower cover 10 need to be separated, the driving component 9 drives the pressure block 16 to descend and then rotate away from the bottom of the lower cover 10.

[0043] In this embodiment, there are four sets of drive components 9, which are symmetrically distributed and fastened to the upper end cover 11 by bolts. Figure 2 The image shows the states of the two pressure blocks 16. The one on the left is in the state of being away from the bottom of the lower end cover 10, and the one on the right is in the state of being in contact with the bottom of the lower end cover 10. The drive unit 9 is a combination of a motor and a hydraulic cylinder. The motor is fixed to the upper end cover 11, the output shaft of the motor is fixed to the hydraulic cylinder, and the piston rod of the hydraulic cylinder is fixed to the pressure block 16. The motor realizes the 180° rotation of the pressure block 16, and the hydraulic cylinder realizes the lifting and lowering of the pressure block 16.

[0044] In some optional embodiments, a plurality of positioning cylinders 8 are also fixedly connected to the upper end cover 11. When the upper end cover 11 and the lower end cover 10 need to be tightly sealed, the piston rod of the positioning cylinder 8 extends horizontally and abuts against the bottom of the lower end cover 10. When the upper end cover 11 and the lower end cover 10 need to be separated, the piston rod of the positioning cylinder 8 retracts away from the bottom of the lower end cover 10.

[0045] In this embodiment, there are two sets of positioning cylinders 8, symmetrically distributed, and fastened to the upper end cover 11 with bolts. The positioning cylinders 8 further lock and position the lower end cover 10, preventing the lower end cover 10 from falling off if the drive component 9 accidentally loses its locking ability during operation. When opening the can, first open the drive component 9, then open the positioning cylinders 8; when sealing the can, first lock it with the positioning cylinders 8, then lock it with the drive component 9.

[0046] In some alternative embodiments, a potassium-sodium collection cover 7 is provided between the lower end cover 10 and the crystallization collection tank 3. The potassium-sodium collection cover 7 is placed on top of the lower end cover 10, and the bottom of the crystallization collection tank 3 is open and placed on top of the potassium-sodium collection cover 7.

[0047] Because the potassium and sodium in the feed ball 15 evaporate at very low temperatures under vacuum, they will evaporate before the magnesium. In the prior art, they will crystallize on the lower end cap 10, which has a lower temperature, making the lower end cap 10 difficult to clean and prone to combustion when the can is opened. This application provides a potassium and sodium collection cap 7 and coats its surface with a metal chloride, so that the chloride reacts with the potassium and sodium produced by reduction to generate stable, non-flammable potassium and sodium chlorides that accumulate on the potassium and sodium collection cap 7, preventing the potassium and sodium from burning when the can is opened, and making it easier to remove the potassium and sodium collection cap 7 for cleaning later.

[0048] In some alternative embodiments, a guide sleeve 4 is fixedly attached to the top of the lower end cover 10, the potassium and sodium collection cover 7 is located inside the guide sleeve 4, and the height of the crystallization collection tank 3 is higher than the height of the guide sleeve 4.

[0049] The crystallization collection bucket 3 is placed inside the guide sleeve 4, which is fixed to the lower end cover 10. When the scissor lift 12 rises or falls, the guide sleeve 4 constrains the posture of the crystallization collection bucket 3.

[0050] Furthermore, the crystallization collection barrel 3 is a frustum-shaped barrel, wider at the top and narrower at the bottom, i.e., a conical barrel shape, with two crystallizer lugs 6 welded to the outer wall of the narrower part at the bottom.

[0051] Furthermore, the maximum outer diameter of the crystallization collection tank 3 is equal to the outer diameter of the guide sleeve 4.

[0052] After the crystallization collection bucket 3 is removed, it is lifted by the lifting equipment through the crystallizer lifting lug 6, so that the crude magnesium falls from the width of the frustum of the crystallization collection bucket 3.

[0053] When using this utility model:

[0054] During sealing, the scissor lift 12 rises, allowing the crystallization collection tank 3 to enter the cooling water jacket 1 along the inner cylinder 2 of the water jacket. The scissor lift 12 continues to rise, ensuring the lower end cover 10 fits tightly against the upper end cover 11. The piston rod of the positioning cylinder 8 rests against the bottom of the lower end cover 10, and the drive component 9 drives the pressure block 16 to rest against the bottom of the lower end cover 10, completing the sealing process. The vacuum pump evacuates the inside of the reduction tank to below 5 Pa through the vacuum pipe 5, and heating of the reduction tank begins. Circulating cooling water flows through the cooling water jacket 1. After a certain temperature and time, magnesium vapor condenses at the crystallization collection tank 3.

[0055] When opening the tank, first move the pressure block 16 away from the bottom of the lower end cover 10, then retract the piston rod of the positioning cylinder 8. The scissor lift 12 then moves the lower end cover 10, the potassium-sodium collection cover 7, the guide sleeve 4, and the crystallization collection tank 3 down simultaneously to remove the reduction zone. Afterward, using the lifting equipment, the crystallization collection tank 3 is lifted through the crystallizer lifting lug 6 to complete the collection of crude magnesium.

[0056] Remove the potassium and sodium collection cap 7 and clean off any potassium and sodium chloride residues from its surface. Then, coat the surface with a metal chloride for future use.

[0057] This invention relates to a crude magnesium crystallization and collection device used in a magnesium reduction workshop. A positioning cylinder 8 and a drive component 9 work together to seal the crystallization collection tank 3, ensuring the vacuum level of the reduction tank. Opening and sealing the tank are simple operations. The scissor lift 12 provides flexible mechanical operation, reducing the difficulty of operation for workers and laying the foundation for factory automation. A potassium and sodium collection cover 7 is installed to prevent potassium and sodium from burning during tank opening, improving the workshop environment, reducing magnesium loss, and saving costs.

[0058] 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.

[0059] 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 device for collecting coarse magnesium from the bottom of a vertical tank, characterized in that, include: Water jacket inner cylinder (2) with openings at both ends. The top of the water jacket inner cylinder (2) is used to communicate with the inner cavity of the vertical reduction tank (13). Magnesium vapor in the vertical reduction tank (13) enters the water jacket inner cylinder (2). A cooling crystallization assembly is disposed on the cylinder wall of the inner cylinder (2) of the water jacket. The cooling crystallization assembly is used to cool down and evacuate the inner cavity of the inner cylinder (2) of the water jacket. The collection mechanism includes a lower end cover (10) and a crystallization collection tank (3). The crystallization collection tank (3) is located on the top of the lower end cover (10). The top of the crystallization collection tank (3) is open. A lifting component is provided at the bottom of the lower end cover (10). The crystallization collection tank (3) is allowed to enter and exit the water jacket inner cylinder (2) from the bottom through the lifting component. A fixing component is disposed on the inner cylinder (2) of the water jacket, and the fixing component is detachably connected to the lower end cover (10).

2. The coarse magnesium collection device at the bottom of the vertical tank according to claim 1, characterized in that: The cooling crystallization assembly includes a cooling water jacket (1), which is fixedly sleeved on the outer wall of the inner cylinder (2) of the water jacket, and circulating cooling water is introduced into the cooling water jacket (1); a vacuum assembly is provided on the cooling water jacket (1).

3. The coarse magnesium collection device at the bottom of the vertical tank according to claim 2, characterized in that: The vacuum assembly includes a vacuum tube (5) fixed to the cooling water jacket (1). One end of the vacuum tube (5) passes through the cooling water jacket (1) and the side wall of the inner cylinder (2) of the water jacket in sequence and communicates with the inner cavity of the inner cylinder (2). The other end is fixed to a vacuum pump.

4. The coarse magnesium collection device at the bottom of the vertical tank according to claim 1, characterized in that: The lifting assembly includes a scissor lift (12), the lower end cover (10) is fixed to the top of the scissor lift (12), and the scissor lift (12) is fixed to a moving trolley.

5. The coarse magnesium collection device at the bottom of the vertical tank according to claim 1, characterized in that: An annular upper end cap (11) is fixed to the bottom of the outer wall of the inner wall of the water jacket (2). When the lower end cap (10) is tightly fitted to the bottom of the inner wall of the water jacket (2), the upper end cap (11) is also tightly fitted to the lower end cap (10). The fixing assembly includes multiple driving members (9) fixed to the upper end cap (11). The output end of the driving member (9) is fixed to a pressure block (16). When the upper end cover (11) and the lower end cover (10) need to be tightly sealed, the driving member (9) drives the pressure block (16) to rotate to the bottom of the lower end cover (10) and then rise to abut against the bottom of the lower end cover (10); when the upper end cover (11) and the lower end cover (10) need to be separated, the driving member (9) drives the pressure block (16) to descend and then rotate away from the bottom of the lower end cover (10).

6. The coarse magnesium collection device at the bottom of the vertical tank according to claim 5, characterized in that: Multiple positioning cylinders (8) are also fixedly connected to the upper end cover (11). When the upper end cover (11) and the lower end cover (10) need to be tightly sealed, the piston rod of the positioning cylinder (8) extends horizontally and abuts against the bottom of the lower end cover (10). When the upper end cover (11) and the lower end cover (10) need to be separated, the piston rod of the positioning cylinder (8) retracts away from the bottom of the lower end cover (10).

7. The coarse magnesium collection device at the bottom of the vertical tank according to claim 1, characterized in that: A potassium-sodium collection cover (7) is provided between the lower end cover (10) and the crystallization collection barrel (3). The potassium-sodium collection cover (7) is placed on top of the lower end cover (10), and the bottom of the crystallization collection barrel (3) is open and placed on top of the potassium-sodium collection cover (7).

8. The coarse magnesium collection device at the bottom of the vertical tank according to claim 7, characterized in that: The lower end cap (10) is fixedly connected to the top of a guide sleeve (4), the potassium and sodium collection cap (7) is located inside the guide sleeve (4), and the height of the crystallization collection bucket (3) is higher than the height of the guide sleeve (4).

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