Heat insulation baffle, baffle extractor and magnesium ingot reduction device for magnesium ingot smelting reduction tank

Abstract

The present invention relates to a heat-insulating baffle for a magnesium ingot smelting reduction tank, a baffle extractor and a magnesium ingot reduction device. The heat-insulating baffle for a magnesium ingot smelting reduction tank comprises a shell and a filter screen; the size of the shell matches the size of the tank mouth of the reduction tank; when the shell is installed, the shell and the tank mouth of the reduction tank are transitionally matched; an air inlet is provided at one end of the shell for the magnesium vapor in the reduction tank to enter the shell; an air outlet is provided at the center of the other end of the shell for guiding the magnesium vapor into a crystallization barrel. The heat-insulating baffle provided by the present invention can force the magnesium vapor in the reduction tank to enter the shell only through the air inlet, and then enter the crystallization barrel through the air outlet. Since the position of the air outlet is designed to be opposite to the center of the crystallization barrel, the magnesium vapor originally diffused everywhere can be concentratedly guided into the crystallization barrel to avoid the magnesium vapor from crystallizing on the outer wall of the crystallization barrel, thereby greatly reducing the generation of "big-head magnesium".

Description

Technical Field

[0001] The invention relates to the technical field of magnesium ingot production, and in particular to a heat insulation baffle for a magnesium ingot smelting reduction tank, a baffle extractor and a magnesium ingot reduction device. Background Art

[0002] Dolomite is used as the main raw material, and the raw material is calcined in a rotary kiln to form calcined white, the main components of which are calcium oxide and magnesium oxide. Among them, ferrosilicon is a reducing agent and fluorite is a catalyst. Calcined white, ferrosilicon and fluorite powder are metered and mixed, and pressed into pellets after grinding. The pellets are loaded into a reduction tank, and then several reduction tanks are loaded into the same reduction furnace, and the internal temperature of the reduction furnace is heated to about 1250°C. At the same time, the interior of the reduction tank is evacuated (absolute pressure <13.3Pa) and maintained for 8 to 10 hours. Under the above conditions, the magnesium oxide in the ore is reduced to magnesium vapor, and the magnesium vapor forms crystalline magnesium in the crystallization barrel at the front end of the reduction tank, also known as crude magnesium. The cover of the reduction tank is opened, the crystallization barrel is taken out, and after cooling, the magnesium ingot is pressed out with a magnesium press, and then refined with flux, left to stand, and cast to produce a commercial magnesium ingot, i.e. refined magnesium.

[0003] In order to reduce the heat transfer in the crystallization barrel in the reduction tank, a heat insulation baffle is set between the reduction tank and the crystallization barrel. The heat insulation baffle can reduce the heat radiation and heat transfer in the reduction tank, and play a heat insulation effect, but it does not play a positive role in the "big head magnesium" phenomenon in the production process of metal magnesium. The so-called "big head magnesium" phenomenon is: a water cooling jacket is connected to one side of the tank mouth of the reduction tank in the existing magnesium ingot production equipment. The inside of the water cooling jacket is used to place the crystallization barrel to cool the crystallization barrel so that it can condense and crystallize the magnesium vapor. Since the crystallization barrel needs to be taken and placed in the water cooling jacket, there is a certain gap between the two. In the process of magnesium vapor flowing from the reduction tank to the crystallization barrel, some magnesium vapor will crystallize in the gap between the water cooling jacket and the outer wall of the crystallization barrel, thereby causing the water cooling jacket, crystallized magnesium, and crystallization barrel to be connected together, making it difficult to remove the crystallization barrel from the water cooling jacket. Mechanical knocking, hydraulic ejection and other means are required to remove the crystallization barrel, which is very troublesome, time-consuming and labor-intensive. To this end, the present invention provides an idea in another direction, which is to provide a heat-insulating baffle for a magnesium ingot smelting reduction tank, which can play a heat-insulating role while reducing the generation of "big-head magnesium". Summary of the invention

[0004] Based on this, it is necessary to provide a heat-insulating baffle for magnesium ingot smelting reduction tank that can reduce the production of "big-head magnesium" to address the problem of "big-head magnesium" phenomenon, providing a new idea for reducing the production of "big-head magnesium".

[0005] In a first aspect, the present invention discloses: a heat insulating baffle for a magnesium ingot smelting reduction tank, which is arranged at the tank mouth of the magnesium ingot reduction tank and is used to reduce the heat transfer from the magnesium ingot reduction tank to the crystallization barrel.

[0006] The heat insulation baffle for magnesium ingot smelting reduction tank comprises: a shell and a filter screen.

[0007] The size of the shell matches the size of the mouth of the reduction tank; when the shell is installed, the shell and the mouth of the reduction tank are transitionally matched; an air inlet is opened at one end of the shell for the magnesium vapor in the reduction tank to enter the shell; an air outlet is opened at the center of the other end of the shell for guiding the magnesium vapor into the crystallization barrel.

[0008] The filter is connected to the shell and is used to filter impurities entering the shell from the reduction tank.

[0009] As a preferred example, the housing includes: a shell, a front plate and a rear plate.

[0010] The two ends of the shell are opened. The front plate covers and seals the opening at one end of the shell; the air inlet is arranged on the front plate; the rear plate covers and seals the opening at the other end of the shell; and the air outlet is arranged on the rear plate.

[0011] As a preferred example, the housing is cylindrical, the front plate and the rear plate are both circular and coaxially arranged with the housing, and the diameters of the front plate and the rear plate are the same as the opening diameter of the housing.

[0012] As a preferred example, the shell is cylindrical. The front plate and the rear plate are both circular and coaxially arranged with the shell. The diameter of the front plate is the same as the opening diameter of the shell; the diameter of the rear plate is larger than the outer diameter of the shell.

[0013] As a preferred embodiment, the housing is in the shape of a truncated cone. The front plate is located on the upper bottom surface of the truncated cone, and the rear plate is located on the lower bottom surface of the truncated cone. The front plate and the rear plate are both arranged in a circular shape and are both arranged coaxially with the housing. The diameters of the front plate and the rear plate are the same as the corresponding housing opening diameters.

[0014] As a preferred example, the air inlet and the air outlet are staggered in the axial direction of the shell.

[0015] As a preferred example, a sealing lip is connected to one side of the shell where the gas outlet is provided, and is used to dock with the barrel mouth of the crystallization barrel to form a gas outlet channel between the gas outlet and the crystallization barrel.

[0016] As a preferred example, the lengths of the air inlet and the air outlet in the axial direction of the shell are set to be 60 to 100 mm.

[0017] The outer shell and the filter are both made of metal; the number of layers of the filter is set to 3 to 5 layers.

[0018] In a second aspect, the present invention further discloses a heat-insulating baffle extractor, which is used to extract the heat-insulating baffle for the magnesium ingot smelting reduction tank as described in the first aspect. The heat-insulating baffle extractor comprises: a rod body, a protruding block, a baffle and a hammer.

[0019] The protrusion is connected to one end of the rod body and is used to extend into the air outlet and hook the outer shell. The stopper is connected to the rod body. The hammer is slidably connected to the rod body and is used to hit the stopper, so that the protrusion pulls the outer shell.

[0020] In a third aspect, the present invention discloses a magnesium ingot reduction device, which includes a reduction tank, a crystallization barrel, a water-cooling jacket, and an insulating baffle arranged between the reduction tank and the crystallization barrel; one end of the water-cooling jacket is connected to the reduction tank; the crystallization barrel is arranged in the water-cooling jacket; the insulating baffle is the insulating baffle for the magnesium ingot smelting reduction tank in the first aspect.

[0021] The beneficial effects of the present invention are:

[0022] 1. The heat-insulating baffle provided by the present invention can force the magnesium vapor in the reduction tank to enter the shell only through the air inlet, and then enter the crystallization barrel through the air outlet. Since the position of the air outlet is designed to be directly opposite to the center of the crystallization barrel, the magnesium vapor that originally diffused everywhere can be concentrated and guided into the crystallization barrel, avoiding the magnesium vapor from crystallizing on the outer wall of the crystallization barrel, thereby greatly reducing the generation of "big-head magnesium".

[0023] 2. In the prior art, the function of the heat insulation baffle is heat insulation, while the present invention improves the original irrelevant heat insulation baffle so that the heat insulation baffle can guide the magnesium vapor to enter the inside of the crystallization barrel in a concentrated manner to reduce the generation of "big-head magnesium", providing a new idea for reducing the generation of "big-head magnesium" and having the value of large-scale promotion and application. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0025] Figure 1 This is a schematic diagram of the installation of the heat insulation baffle for the magnesium ingot smelting reduction tank when in use;

[0026] Figure 2 It is a schematic diagram of the structure of the housing in Example 1;

[0027] Figure 3 for Figure 2 sectional view of

[0028] Figure 4 is a schematic structural diagram of the housing in Example 2;

[0029] Figure 5 for Figure 4 sectional view of

[0030] Figure 6 This is a schematic diagram of the structure of the housing in Example 3;

[0031] Figure 7 for Figure 6 sectional view of

[0032] Figure 8 is a cross-sectional view of the housing in Example 4;

[0033] Fig. 9 This is a schematic diagram of the structure of the heat insulation baffle in Example 4 during installation;

[0034] Fig.10 This is a schematic diagram of the structure of the heat insulation baffle remover in Example 4.

[0035] In the figure: reduction tank 1, crystallization barrel 2, outer shell 3, shell body 31, front plate 32, rear plate 33, filter screen 4, rod body 5, protruding block 6, stopper 7, hammer 8, sealing lip 9, water cooling jacket 10. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] It should be noted that when a component is referred to as being "mounted on" another component, it may be directly on the other component or there may be a central component. When a component is considered to be "set on" another component, it may be directly set on the other component or there may be a central component at the same time. When a component is considered to be "fixed to" another component, it may be directly fixed on the other component or there may be a central component at the same time.

[0038] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0039] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which the present invention belongs. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "or / and" used herein includes any and all combinations of one or more of the related listed items.

[0040] Please refer to Figure 1 The heat insulation baffle for the magnesium ingot smelting reduction tank provided by the present invention is arranged between the magnesium ingot reduction tank 1 and the crystallization barrel 2, more precisely, at the tank mouth of the reduction tank 1, so as to reduce the heat transfer from the magnesium ingot reduction tank 1 to the crystallization barrel 2.

[0041] The heat-insulating baffle for the reduction tank for smelting magnesium ingots comprises a closed outer shell 3 and a filter screen 4. The size of the outer shell 3 matches the size of the tank mouth of the reduction tank 1. After the outer shell 3 is installed, it can basically cover the entire tank mouth of the reduction tank 1, and a transition fit is performed between the outer shell 3 and the tank mouth of the reduction tank 1. Among them, an air inlet is provided at one end of the outer shell 3, that is, the end facing the reduction tank 1, for the magnesium vapor in the reduction tank 1 to enter the outer shell 3. An air outlet is provided at the center position of the other end of the outer shell 3, that is, the center position of the end facing the crystallization barrel 2, for guiding the magnesium vapor to be input into the crystallization barrel 2. The filter screen 4 is connected to the outer shell 3, and is used to filter impurities passing through the inside of the outer shell 3.

[0042] Specifically, the structural design of the housing 3 may be implemented in a variety of ways, as described in the following embodiments.

[0043] Example 1

[0044] Please refer to Figure 2 and Figure 3 ( Figure 2 The filter screen 4 is not shown in the figure, and the shell 3 includes a shell 31, a front plate 32 and a rear plate 33. The shell 31 is set to be cylindrical, and openings are opened at both ends of its length direction. In this embodiment, the length of the shell 31 in the axial direction can be set to 60-100 mm. The front plate 32 and the rear plate 33 are set to be circles of the same size and are coaxially fixed at both ends of the axial direction of the shell 31. Specifically, the outer wall of the front plate 32 is fixed to the inner wall of the opening, and a notch is cut off on the circular front plate 32 to form a notch. The notch on the front plate 32 forms an air inlet on the shell 3. Similarly, the outer wall of the rear plate 33 is fixed to the inner wall of the opening at the other end of the shell 3. The difference is that the rear plate 33 needs to be provided with an air outlet at its center position, and the air inlet and the air outlet should be staggered in the length direction of the shell 31, and there should be no overlap. The purpose is to prevent the heat in the reduction tank 1 from directly entering the crystallization barrel 2 through thermal radiation and thermal convection, thereby improving the thermal insulation effect.

[0045] Both the housing 3 and the filter 4 can be made of high temperature resistant metals, such as some high temperature alloys based on iron, nickel, and cobalt. The number of layers of the filter 4 can be set to 3 to 5 layers to increase the durability of the filter 4 under high temperature conditions. The filter 4 is used to filter impurities passing through the interior of the housing 3 to prevent impurities in the reduction tank 1 from entering the crystallization barrel 2, such as some furnace ash, slag, etc. in the reduction tank 1.

[0046] Example 2

[0047] Please refer to Figure 4 and Figure 5 ( Figure 4 The filter screen 4 is not shown in the figure. Compared with Example 1, the design of the shell 31 and the front plate 32 of Example 2 is the same as that of Example 1, and the difference lies in the structural design of the rear plate 33. In this embodiment, the diameter of the rear plate 33 is larger than the outer diameter of the shell 31. When the two are coaxially connected, the outer edge of the rear plate 33 protrudes outside the cross section of the shell 31, so that when the heat insulation baffle is installed, the protruding outer edge of the rear plate 33 can be close to the tank mouth of the reduction tank 1, increase the sealing of the tank mouth, reduce the leakage of magnesium vapor in the reduction tank 1 from the surroundings of the heat insulation baffle, and force the magnesium vapor to enter the crystallization barrel 2 from the air inlet and outlet as much as possible.

[0048] Example 3

[0049] Please refer to Figure 6 and Figure 7 Compared with Examples 1 and 2, the shell 31 of Example 3 is set to a truncated cone shape. Correspondingly, the diameters of the circular front plate 32 and the rear plate 33 are the same as the corresponding opening diameters, and the installation structure is the same as that of Example 1. The front plate 32 is located on the upper bottom surface of the truncated cone (i.e., the side with a smaller area). The rear plate 33 is located on the lower bottom surface of the truncated cone (i.e., the side with a larger area). The purpose of this design is also to increase the sealing of the tank mouth of the reduction tank 1: as the heat insulation baffle enters the reduction tank 1, the outer wall of the shell 31 gradually contacts the tank mouth.

[0050] Example 4

[0051] Please refer to Figure 8 In this embodiment, based on the embodiment 1, a sealing lip 9 is fixed on the side of the housing 3 where the air outlet is provided. The sealing lip 9 is configured to be a thin-walled truncated cone (or a circular ring) coaxial with the housing 31. Fig. 9As shown, the purpose of such design is to enable the outer wall of the sealing lip 9 to contact the inner wall of the water-cooling jacket 10, and to enable one end of the sealing lip 9 to dock with the barrel mouth of the crystallization barrel 2, thereby forming a relatively closed air outlet channel between the air outlet and the crystallization barrel 2. The magnesium vapor guided out by the air outlet directly enters the crystallization barrel 2 through the air outlet channel, reducing the leakage of magnesium vapor diffusing into the gap between the water-cooling jacket 10 and the crystallization barrel 2. Compared with Example 1, this embodiment can further reduce the generation of "big head magnesium". The heat insulation baffle in Example 1 is easier to install and subsequently remove because there is no obstruction of the sealing lip 9.

[0052] Similarly, the sealing lip 9 in this embodiment can also be applied in embodiments 2 and 3.

[0053] The heat insulation baffle for magnesium ingot smelting reduction tank provided by the present invention is similar to the traditional heat insulation baffle when used, and is arranged between the reduction tank 1 and the crystallization barrel 2. The difference is that the heat insulation baffle in the present invention basically closes the entire tank opening of the reduction tank 1 after installation. Please refer to Figure 1 , the heat insulation baffle completely blocks the tank mouth of the reduction tank 1, forcing the magnesium vapor in the reduction tank 1 to enter the shell 31 only through the air inlet, and then enter the crystallization barrel 2 through the air outlet. Since the position of the air outlet is designed to be directly opposite to the center of the crystallization barrel 2, the magnesium vapor that originally diffused everywhere can be concentrated and guided into the crystallization barrel 2, avoiding the crystallization of magnesium vapor on the outer wall of the crystallization barrel 2, thereby greatly reducing the generation of "big-headed magnesium". The traditional heat insulation baffle is simply a baffle, the purpose of which is to isolate the transfer of heat. As for the generation of "big-headed magnesium", the prior art only avoids the generation of "big-headed magnesium" by improving the process, such as temperature, vacuum degree, calcination time, etc. The present invention provides another new idea, which improves the original unrelated heat insulation baffle, so that it can reduce the generation of "big-headed magnesium" while having a heat insulation effect, and the reduction effect is significant, which is worth promoting and applying on a large scale.

[0054] In order to verify the effect of the heat insulation baffle for the magnesium ingot smelting reduction tank, the heat insulation baffle in Example 1 was prepared for experiment. The dimensions of the heat insulation baffle after manufacture are: the outer diameter of the shell 3 is 300mm, the length in the axial direction is 85mm, the diameter of the air outlet is 75mm, a notch is cut out at 240mm from one end of the diameter of the front plate 32 to form an air inlet, and the filter screen 4 is set to 5 layers. The heat insulation baffle of the above size is verified for a single reduction tank 1 and tested in a reduction furnace. The results show that compared with the existing magnesium ingot production equipment, the crystal density after using the heat insulation baffle is better; compared with the use of traditional heat insulation baffles, the "big head magnesium" is reduced by about 70%, and most of the magnesium enters the crystallization barrel 2, leaving only a small part outside the crystallization barrel 2. Subsequently, the heat insulation baffle of the above size is tested for the whole group of reduction tanks 1, and the experimental results are consistent with the single reduction tank 1 experiment, which basically solves the current "big head magnesium" phenomenon.

[0055] Example 5

[0056] Because the heat insulation baffle will be deformed by high temperature and sometimes get stuck, and the heat insulation baffle itself is hot, it is difficult to remove the heat insulation baffle. Therefore, this embodiment provides a heat insulation baffle remover, which is used to remove the heat insulation baffle for the magnesium ingot smelting reduction tank described in the above embodiment. Fig.10 As shown, the heat insulation baffle extractor includes a rod body 5, a protruding block 6, a stopper 7 and a hammer 8.

[0057] Specifically, the rod body 5 is a straight rod of appropriate length. One end of the rod body 5 is fixed to the protruding block 6. The protruding block 6 is required to be smaller than the air outlet so that the protruding block 6 can extend into the air outlet. The protruding block 6 extending into the air outlet can hook the rear plate 33, so that the heat insulation baffle can be taken out of the reduction tank 1 by pulling the rod body 5 later. Two blocks 7 can be provided, and both are fixed on the rod body 5. One of the blocks 7 is located on the end of the rod body 5 away from the protruding block 6. The hammer 8 is arranged between the two blocks 7 and can slide on the rod body 5. The hammer 8 itself has a certain weight, and a handle for easy holding is provided on the hammer 8. When in use, the worker manipulates the rod body 5 so that the protruding block 6 hooks the rear plate 33, and then moves the hammer 8 to hit the block 7 away from the protruding block 6 (that is, the impact direction is the direction away from the heat insulation baffle). The impact force generated by the hammer 8 when it strikes causes the heat insulation baffle to separate from the reduction tank 1, thereby solving the problem of difficulty in removing the heat insulation baffle.

[0058] Example 6

[0059] This embodiment proposes a magnesium ingot reduction device, which includes a reduction tank 1, a crystallization barrel 2, a water cooling jacket 10, and a heat insulation baffle disposed between the reduction tank 1 and the crystallization barrel 2; one end of the water cooling jacket 10 is connected to the reduction tank 1; and the crystallization barrel 2 is disposed in the water cooling jacket 10. The reduction tank 1, the crystallization barrel 2, and the water cooling jacket 10 can all adopt existing equipment, and the heat insulation baffle is the heat insulation baffle in Example 1, Example 2, Example 3, or Example 4.

[0060] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0061] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A heat-insulating baffle for a magnesium ingot smelting reduction tank, which is arranged at the tank mouth of the magnesium ingot reduction tank (1) and is used to reduce the heat transfer from the magnesium ingot reduction tank (1) to the crystallization barrel (2); It is characterized in that The heat insulation baffle for the magnesium ingot reduction tank (1) comprises: The outer shell (3) has a size that matches the size of the tank opening of the reduction tank (1); when the outer shell (3) is installed, the outer shell (3) and the tank opening of the reduction tank (1) are transitionally matched; an air inlet is provided at one end of the outer shell (3) for the magnesium vapor in the reduction tank (1) to enter the outer shell (3); an air outlet is provided at the center of the other end of the outer shell (3) for guiding the magnesium vapor to be input into the crystallization barrel (2); and a filter screen (4) connected to the housing (3); the filter screen (4) is used to filter impurities entering the housing (3) from the reduction tank (1).

2. The heat insulation baffle for magnesium ingot smelting reduction tank according to claim 1, characterized in that: The housing (3) comprises: A housing (31) having openings at both ends; A front plate (32) covers and seals an opening at one end of the housing (31); the air inlet is arranged on the front plate (32); A rear plate (33) covers and seals the opening at the other end of the shell (31); the air outlet is arranged on the rear plate (33).

3. The heat insulation baffle for magnesium ingot smelting reduction tank according to claim 2, characterized in that: The housing (31) is cylindrical; The front plate (32) and the rear plate (33) are both circular and coaxially arranged with the housing (31); The diameters of the front plate (32) and the rear plate (33) are both the same as the opening diameter of the shell (31).

4. The heat insulation baffle for magnesium ingot smelting reduction tank according to claim 2, characterized in that: The housing (31) is cylindrical; The front plate (32) and the rear plate (33) are both circular and coaxially arranged with the housing (31); The diameter of the front plate (32) is the same as the opening diameter of the shell (31); and the diameter of the rear plate (33) is greater than the outer diameter of the shell (31).

5. The heat insulation baffle for magnesium ingot smelting reduction tank according to claim 2, characterized in that: The shell (31) is in the shape of a truncated cone; the front plate (32) is located on the upper bottom surface of the truncated cone, and the rear plate (33) is located on the lower bottom surface of the truncated cone; The front plate (32) and the rear plate (33) are both circular and coaxially arranged with the housing (31); The diameters of the front plate (32) and the rear plate (33) are the same as the corresponding opening diameters of the shell (31).

6. The heat-insulating baffle for magnesium ingot smelting reduction tank according to any one of claims 3 to 5, characterized in that: The air inlet and the air outlet are staggered in the axial direction of the shell (31).

7. The heat insulation baffle for magnesium ingot smelting reduction tank according to any one of claims 3 to 5, characterized in that: The side of the shell (3) provided with the gas outlet is connected with a sealing lip (9) which is used to dock with the barrel opening of the crystallization barrel (2) to form a gas outlet channel between the gas outlet and the crystallization barrel (2).

8. The heat insulation baffle for magnesium ingot smelting reduction tank according to claim 1, characterized in that: The lengths of the air inlet and the air outlet in the axial direction of the shell (31) are set to be 60 to 100 mm; The outer shell (3) and the filter screen (4) are both made of metal; the number of layers of the filter screen (4) is set to 3 to 5.

9. A heat insulation baffle extractor, characterized in that: It is used to take out the heat insulation baffle for magnesium ingot smelting reduction tank according to any one of claims 1 to 8; the heat insulation baffle taker comprises: Rod body (5); A protruding block (6) connected to one end of the rod body (5); the protruding block (6) is used to extend into the air outlet and hook the outer shell (3); a stopper (7) connected to the rod body (5); and A hammer (8) is slidably connected to the rod body (5); the hammer (8) is used to strike the stopper (7), so that the protruding block (6) pulls the housing (3).

10. A magnesium ingot reduction device, comprising a reduction tank (1), a crystallization barrel (2), a water cooling jacket (10), and a heat insulation baffle arranged between the reduction tank (1) and the crystallization barrel (2); one end of the water cooling jacket (10) is connected to the reduction tank (1); the crystallization barrel (2) is arranged in the water cooling jacket (10); It is characterized in that The heat insulating baffle is a heat insulating baffle for a magnesium ingot reduction tank (1) as claimed in any one of claims 1 to 8.

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