Anti-flattening and anti-slagging reduction tank
By introducing anti-flat lining, vacuum cooling sleeve and magnesium junction structure into the reduction tank, the problem of slag in the reduction tank in silicon thermal magnesium refining is solved, and the efficient rotation of the tank body and the purity of magnesium crystallization is achieved, which extends the service life and reduces thermal energy loss.
Patent Information
- Application Number
- CN202422466995.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-12
- Publication Date
- 2025-07-25
- Estimated Expiration
- 2034-10-12
AI Technical Summary
During the existing silicon thermal magnesium refining process, horizontal reduction tanks are prone to slag, resulting in reduced production capacity and short service life. Reducing tanks are frequently replaced, and the heat energy loss is severe, and the rotation operation is inconvenient, and there is a risk of air leakage.
An anti-flat and anti-slag reduction tank was designed, using the tank lining, vacuum cooling sleeve and magnesium junction structure to enhance the strength of the tank, ensure smooth rotation and avoid slag, and control the temperature through vacuum cooling to improve the purity of magnesium crystallization.
It extends the service life of the reduction tank, reduces the probability of deformation, ensures smooth rotation and slag protection, improves the purity and yield of magnesium crystals, and reduces heat energy loss.
Smart Images
Figure CN223150619U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of magnesium smelting by the silicothermic process, and particularly relates to an anti-flattening and anti-slagging reduction tank. Background Art
[0002] In the current silicothermic smelting field, the production methods of metals such as calcium, magnesium, and strontium mostly use horizontal reduction tanks. Due to the poor working environment inside and outside the reduction tank, the high-temperature dust and burning magnesium during furnace tapping directly cause scaling inside the reduction tank, and the slag formation inside the reduction tank affects the heat conduction of the reduction tank, resulting in reduced production capacity. In the prior art, most of them use the method of replacing the reduction tank to remove slag. Usually, the reduction tank needs to be taken out of the furnace for cooling and slag removal within less than 20 days after being put into the furnace. Frequent cooling and slag removal not only affect the service life of the reduction tank, but also cause relatively serious heat energy loss due to the heat transfer and temperature reduction of the reduction tank body from hot to cold. Frequent slag removal and tank replacement also cause waste of time.
[0003] In addition, in the production of the silicothermic process, there is also a situation where the high-temperature zone generated by the burner in the furnace causes the reduction tank to collapse and become flat and waste. In the past few years, there have been many improvements in the anti-flattening and anti-slagging of the reduction tank. So far, there is still a method of rotating the 45-degree tank with two vacuum flanges for one tank. Two vacuum flanges are reserved at a 45-degree angle. The purpose is to enable the 45-degree rotation of the reduction tank after micro-deformation. After rotation, the spare pipe orifice is closed with a blind plate. Although this method can effectively avoid the flat tank caused by the fixed-position burning of the high-temperature zone, it is restricted by the vacuum pipe and the water pipe during the operation and is not convenient for rotation. At the same time, there is also a situation where the reserved flange is not tightly closed and leaks air during the operation. Therefore, there is an urgent need for an anti-flattening and anti-slagging reduction tank to solve the above problems. Content of the Utility Model
[0004] The purpose of the utility model is to provide an anti-flattening and anti-slagging reduction tank. Through structural optimization, not only the ability of the reduction tank to resist external pressure is enhanced, the deformation probability of the reduction tank is reduced, and its service life is prolonged, but also the adverse effects suffered by the reduction tank during furnace tapping and rotation can be solved, thereby realizing the smooth rotation of the reduction tank, and further achieving the purpose of anti-slagging. The structure is simple, the use is convenient, and the practicability is strong.
[0005] The utility model adopts the following technical solutions:
[0006] An anti-flattening and anti-slagging reduction tank, comprising a tank body, one end of the tank body is sealed, and the other end is open; a sealing flange is detachably arranged at the open end of the tank body, a vacuum pipe communicating with the inside of the tank body is arranged outside the sealing flange, a magnesium-forming device is arranged inside the sealing flange, and the magnesium-forming device is located inside the tank body under working conditions; a vacuum cooling jacket is arranged on the tank body outside the magnesium-forming device; an anti-flattening inner lining is arranged on the inner wall of the tank body.
[0007] Preferably, one end of the tank body close to the open end is in a horn-shaped structure, and the vacuum cooling jacket is coaxially arranged outside it.
[0008] Preferably, the length of the anti-flattening inner lining is less than the length of the tank body.
[0009] Preferably, the length of the anti-flattening inner lining is two-thirds of the length of the tank body; and the anti-flattening inner lining is entirely located in the middle and rear part of the tank body.
[0010] Preferably, the magnesium knotter is in a conical structure.
[0011] Preferably, the magnesium knotter is recessed inward from the end connected to the sealing flange to form a cavity structure.
[0012] Preferably, a magnesium knotting ring is coaxially arranged on one side of the magnesium knotter inside the tank body.
[0013] Preferably, the magnesium knotting ring is located in the upper middle part of the magnesium knotter.
[0014] Preferably, the magnesium knotting ring is a double-layer structure arranged at intervals, and each layer is staggered with through holes; after the magnesium knotting ring is installed in the tank body, the outer wall contacts the inner wall of the tank body.
[0015] Preferably, a sealing rubber ring is arranged between the sealing flange and the tank body.
[0016] Compared with the prior art, the beneficial effects of the present utility model are as follows: By arranging the anti-flattening inner lining in the tank body, the structural strength of the tank body can be effectively enhanced, the probability of deformation of the tank body can be reduced, the service life of the tank body can be guaranteed, and the smooth progress of the work can be ensured; by arranging the vacuum tube on the sealing flange at the end of the tank body and arranging the vacuum cooling jacket at the open end of the tank body, the obstacles encountered during the rotation of the tank body during tapping can be avoided, so that the tank body can rotate smoothly to realize the timed replacement of the contact surface, and the situation of serious slagging on a single side wall due to the immobility of the tank body can be avoided. At the same time, the slag on the inner wall of the tank can be overcome by relying on the bottom friction of the tapping tool. The purpose of anti-flattening and anti-slagging is achieved by rotating the tank on the day after tapping.
[0017] In addition, the setting of the vacuum cooling jacket can also realize the constant cooling temperature during magnesium crystallization, avoid the phenomenon of potassium and sodium precipitation during magnesium crystallization caused by the temperature change brought by water cooling, and ensure the purity and quality of magnesium crystallization. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 is the front view of the embodiment of the present application;
[0019] Figure 2 is the cross-sectional view of the embodiment of the present application;
[0020] Figure 3 This is a schematic structural diagram of the magnesium condenser in the embodiment of the present application. Specific embodiments
[0021] The following will clearly and completely describe the present utility model in conjunction with the accompanying drawings and embodiments:
[0022] As Figures 1 to 3 shown, a kind of anti-flattening and anti-coking reduction tank of the present utility model includes a tank body 1. The tank body 1 is integrally cylindrical. One end of the tank body 1 is sealed, and the other end is open; a sealing flange 2 is detachably arranged at the open end of the tank body 1, and a sealing rubber ring 3 is arranged between the sealing flange 2 and the tank body 1 to ensure the sealing performance inside the tank body 1 during the working process; a vacuum tube 4 communicating with the inside of the tank body 1 is arranged outside the sealing flange 2, and a magnesium condenser 5 is arranged inside the sealing flange 2. The magnesium condenser 5 is coaxially arranged with the sealing flange 2, and the vacuum tube 4 is arranged on the sealing flange 2 on one side of the magnesium condenser 5; in the working state, the magnesium condenser 5 is located inside the tank body 1 and is used for the crystallization of magnesium vapor on it; a vacuum cooling jacket 6 is coaxially arranged on the tank body 1 outside the magnesium condenser 5 and is used for cooling the magnesium crystallization area to realize the crystallization and precipitation of magnesium on the magnesium condenser 5; since the inside of the vacuum cooling jacket 6 is in a vacuum state and the temperature is relatively constant, it can avoid the situation that potassium and sodium precipitate due to too low temperature when using water cooling for cooling, ensuring the purity and output of magnesium. Because after potassium and sodium precipitate, when taken out of the tank body 1 with the magnesium condenser 5, they will burn rapidly when encountering air, and at the same time, part of the crystalline magnesium will also be burned, thereby reducing the output of crystalline magnesium; an anti-flattening inner lining 7 is arranged on the inner wall of the tank body 1, and the anti-flattening inner lining 7 is used to enhance the structural strength of the tank body 1, reduce the probability of its deformation, and ensure its service life. The anti-flattening inner lining 7 can be selected according to actual needs from materials that can not only ensure the strength of the tank body 1 but also resist high temperatures.
[0023] In this embodiment, since the temperature at the upper end of the tank body 1 near the open end is lower than that in the middle and rear parts and is less affected by high temperature, the length of the anti-flattening inner lining 7 is set to be less than the length of the tank body 1. Preferably, the set length of the anti-flattening inner lining 7 is preferably two-thirds of the length of the tank body 1, and the anti-flattening inner lining 7 is entirely located in the middle and rear parts of the tank body 1.
[0024] Furthermore, the end of the tank body 1 near the open end is a flared structure with an enlarged diameter, and the vacuum cooling jacket 6 is coaxially arranged outside it; the flared setting at the end of the tank body 1 can expand the space at the end of the tank body 1, increase the temporary storage space for magnesium, and at the same time facilitate the subsequent taking and placing operations of the magnesium condenser 5.
[0025] Furthermore, in this embodiment, the magnesium concentrator 5 is a conical structure, which facilitates the crystallization of magnesium vapor thereon, plays a role in shaping the crystallized magnesium, and is also convenient for the subsequent separation of the crystallized magnesium. Among them, the magnesium concentrator 5 is recessed inward from one end connected to the sealing flange 2 to form a cavity structure, and the cavity structure is preferably configured to match the overall shape of the magnesium concentrator 5 as a cone. The cavity structure can allow the external natural air to enter the cavity during the working process to achieve the purpose of naturally cooling the magnesium concentrator 5. At the same time, as the external air flows, part of the heat in the tank body 1 can also be taken away.
[0026] In addition, a magnesium ring 8 is coaxially arranged on one side of the magnesium ring 5 located in the tank body 1. When the magnesium ring 5 is installed inside the tank body 1, there is a gap between the magnesium ring 8 and the inner wall of the tank body 1 to ensure the smooth progress of the vacuum pumping work; the magnesium ring 8 can shield the vacuum tube 4 to prevent magnesium vapor from entering the vacuum tube 4 during the crystallization process and precipitating, and blocking the vacuum tube 4. In order to reduce the impact of magnesium vapor on the vacuum tube 4, the gap between the magnesium ring 8 and the inner wall of the tank body 1 may not be opened along the circumference, but may be opened away from the position where the vacuum tube 4 is located; the magnesium ring may also be set as a double-layer structure arranged at intervals, and through holes 9 are arranged alternately on both layers of the structure, and the through holes 9 near one end of the sealing flange 2 are staggered with the vacuum tube 4, ensuring that the vacuum pumping is carried out normally while reducing the impact on the vacuum tube; under this premise, after the magnesium ring is installed in the tank body, the outer wall contacts the inner wall of the tank body to avoid the flow of too much magnesium vapor to the vacuum tube 4. In addition, the magnesium ring 8 can also prevent excessive magnesium vapor from being transmitted upward to the sealing flange 2 to cause adverse effects on the sealing rubber ring 3. The magnesium ring 8 is preferably arranged in the middle and upper part of the magnesium concentrator 5 to ensure that there is sufficient space on the magnesium concentrator 5 for magnesium vapor to precipitate and crystallize.
[0027] The usage process of the present utility model is as follows. First, load the material balls into the tank body 1, then install the magnesium knotter 5. After the installation is completed, cover it and start to evacuate. As the heating time extends, the temperature of the material balls gradually increases and the degree of vacuum gradually rises. When the remaining vacuum pressure and the internal temperature of the tank body 1 reach the predetermined values, the reduction reaction starts (the actual reduction reaction will vary with the temperature of the material balls and the degree of vacuum). During the reaction process, the displaced metallic magnesium exists in the form of vapor at high temperature. When the magnesium vapor after reduction displacement reaches the space where the magnesium knotter 5 is located, it can be naturally cooled by the vacuum cooling sleeve 6 and the outer conical hole of the magnesium knotter 5 to achieve the best effect of magnesium knotting. At this time, when the magnesium vapor encounters the low-temperature wall surface of the magnesium knotter 5, it will condense and precipitate to become a solid and adhere to the magnesium knotter 5. Due to the crystallization of the magnesium vapor, the pressure in the magnesium vapor space becomes smaller, and the reduction reaction proceeds in the positive direction. The present utility model effectively enhances the structural strength of the tank body 1 by arranging an anti-flattening inner lining 7 in the tank body 1, reduces the probability of deformation of the tank body 1, ensures the service life of the tank body 1, and ensures the smooth progress of the work. By arranging the vacuum tube 4 on the sealing flange 2 at the end of the tank body 1 and arranging a vacuum cooling sleeve 6 at the open end of the tank body 1, the obstacles encountered during the rotation of the tank body 1 out of the furnace can be avoided, enabling the tank body 1 to rotate smoothly to achieve regular replacement of the contact surface and avoiding the serious slagging on a single side wall due to the immobility of the tank body 1. At the same time, the slagging on the inner wall of the tank body 1 can be overcome by leveraging the bottom friction of the out-of-furnace appliance, achieving the purpose of anti-flattening and anti-slagging through the rotation on the day after the furnace is out.
Claims
1. An anti-flattening and anti-coking reduction tank, characterized in that: It includes a tank body, one end of the tank body is sealed, and the other end is open; a sealing flange is detachably arranged at the open end of the tank body, a vacuum tube communicating with the inside of the tank body is arranged outside the sealing flange, and a magnesium forming device is arranged inside the sealing flange. In the working state, the magnesium forming device is located inside the tank body; a vacuum cooling jacket is arranged on the tank body outside the magnesium forming device; an anti-collapse inner lining is arranged on the inner wall of the tank body.
2. The anti-flattening and anti-coking reduction tank according to claim 1, wherein: One end of the tank body close to the open end is of a flared structure, and the vacuum cooling jacket is coaxially arranged outside it.
3. The anti-flattening and anti-slagging reduction tank according to claim 1, characterized in that: The length of the anti-collapse inner lining is less than the length of the tank body.
4. The anti-flattening and anti-slagging reduction tank according to claim 1, wherein: The set length of the anti-collapse inner lining is two-thirds of the length of the tank body; and the anti-collapse inner lining is entirely located in the middle and rear part of the tank body.
5. The anti-flattening and anti-caking reduction tank according to claim 1, characterized in that: The magnesium forming device is of a conical structure.
6. The anti-flattening and anti-slagging reduction tank according to claim 5, wherein: The magnesium forming device is recessed inward from the end connected to the sealing flange to form a cavity structure.
7. The anti-flattening and anti-coking reduction tank according to claim 6, characterized in that: A magnesium forming ring is coaxially arranged on one side of the magnesium forming device inside the tank body.
8. The anti-flattening and anti-slagging reduction tank according to claim 7, characterized in that: The magnesium forming ring is located in the upper middle part of the magnesium forming device.
9. The anti-flattening and anti-slagging reduction tank according to claim 8, characterized in that: The magnesium forming ring is a double-layer structure arranged at intervals, and through holes are staggered in each layer; after the magnesium forming ring is installed inside the tank body, its outer wall contacts the inner wall of the tank body.
10. The anti-flattening and anti-slagging reduction tank according to claim 1, characterized in that: A sealing rubber ring is arranged between the sealing flange and the tank body.