Thermal baffle for magnesium ingot smelting reduction tank, baffle extractor and magnesium ingot reduction device

Abstract

The utility model relates to a heat insulation baffle for a magnesium ingot smelting reduction tank, a baffle extractor and a magnesium ingot reduction device. The thermal baffle for the magnesium ingot smelting reduction tank comprises a shell and a filter screen, the size of the shell is matched with that of a tank opening of the reduction tank; after the shell is mounted, the shell is in transition fit with the tank opening of the reduction tank; an air inlet is formed in one end of the shell and used for allowing magnesium steam in the reduction tank to enter the shell; a gas outlet is formed in the center of the other end of the shell and is used for guiding magnesium steam into the crystallization barrel. According to the thermal baffle provided by the utility model, magnesium steam in the reduction tank can be forced to enter the shell only through the air inlet and then enter the crystallization barrel through the air outlet. Due to the fact that the position of the air outlet is designed to be right opposite to the center of the crystallization barrel, magnesium steam which is originally diffused all around can be guided into the crystallization barrel in a centralized mode, crystallization of the magnesium steam on the outer wall of the crystallization barrel is avoided, and generation of large-head magnesium is greatly reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to magnesium ingot production technical field especially is magnesium ingot smelting reduction tank is with heat insulation baffle, baffle extractor and magnesium ingot reduction device. BACKGROUND

[0002] Take dolomite as main raw material, and the raw material is calcined as calcined dolomite in the rotary kiln, and the main component of calcined dolomite is calcium oxide and magnesium oxide. Among them, silicon iron is a reducing agent, and fluorite is a catalyst. The calcined dolomite, silicon iron and fluorite powder are measured and dosed, and then pressed into pellets after grinding. The pellets are loaded into the reduction tank, and then a plurality of reduction tanks are loaded into the same reduction furnace, and the internal temperature of the reduction furnace is heated to about 1250 DEG C. At the same time, the inside of the reduction tank is vacuumized (absolute pressure < 13.3 Pa) and maintained for 8-10 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 reduction tank cover is opened, the crystallization barrel is taken out, and the magnesium ingot is pressed out after cooling by the magnesium pressing machine. Then, through flux refining, standing and casting, commercial magnesium ingot, i.e. refined magnesium, is produced.

[0003] In order to reduce the heat transfer in the crystallization barrel in the reduction tank, a heat insulation baffle is arranged 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 has the effect of heat insulation. However, it does not have a positive effect on the "big head magnesium" phenomenon in the production process of magnesium. The so-called "big head magnesium" phenomenon is that the water-cooled jacket on one side of the tank opening of the reduction tank in the existing magnesium ingot production equipment is connected. The inside of the water-cooled 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 in and out in the water-cooled jacket, there is a certain gap between them. In the process of magnesium vapor flowing from the reduction tank to the crystallization barrel, part of the magnesium vapor will crystallize in the gap between the water-cooled jacket and the outer wall of the crystallization barrel, so that the water-cooled jacket, crystalline magnesium and crystallization barrel are connected together, making it difficult to take out the crystallization barrel from the water-cooled jacket. Mechanical knocking, hydraulic ejecting and other means are needed to take out the crystallization barrel, which is very troublesome and time-consuming. Therefore, the utility model provides another direction of thought, aiming to provide a heat insulation baffle for magnesium ingot smelting reduction tank, which can not only have the effect of heat insulation, but also reduce the generation of "big head magnesium". SUMMARY

[0004] Therefore, it is necessary to provide a heat insulation baffle for magnesium ingot smelting reduction tank which can reduce the generation of "big head magnesium" to solve the problem of "big head magnesium" generation.

[0005] The utility model discloses a heat -proof baffle for magnesium ingot smelting reduction tank sets up at the tank mouth of magnesium ingot reduction tank, is used to reduce the heat transfer of magnesium ingot reduction tank to crystallizing barrel.

[0006] The heat -proof baffle for magnesium ingot smelting reduction tank comprises an outer shell and a filter screen.

[0007] The size of the outer shell is matched with the size of the tank mouth of the reduction tank, and the outer shell is in transition fit with the tank mouth of the reduction tank after installation.

[0008] One end of the outer shell is provided with an air inlet for the magnesium vapor in the reduction tank to enter the outer shell.

[0009] As a preferred example, the outer shell comprises a shell body, a front plate and a rear plate.

[0010] The shell body is provided with openings at both ends.

[0011] As a preferred example, the shell body is in a cylindrical shape.

[0012] As a preferred example, the shell body is in a cylindrical shape.

[0013] As a preferred example, the shell body is in a circular truncated cone shape.

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

[0015] As a preferred example, one side of the outer shell provided with the air outlet is connected with a sealing lip.

[0016] As a preferred example, the length of the air inlet and the air outlet in the axial direction of the shell body is set to 60-100mm.

[0017] Both the outer shell and the filter screen are made of metal material.

[0018] In the second aspect, the utility model discloses a heat -proof baffle extractor for taking out the heat -proof baffle for magnesium ingot smelting reduction jar of the first aspect. The heat -proof baffle extractor includes: the rod body, the convex block, the block and the hammer.

[0019] The convex block is connected at one end of the rod body, which is used to extend into the air outlet and hook the shell. The block is connected on the rod body. The hammer is slidingly connected on the rod body, which is used to hit the block, so that the convex block pulls the shell.

[0020] In the third aspect, the utility model discloses a magnesium ingot reduction device, which includes a reduction jar, a crystallization barrel, a water-cooled jacket and a heat -proof baffle arranged between the reduction jar and the crystallization barrel. One end of the water-cooled jacket is connected with the reduction jar. The crystallization barrel is arranged in the water-cooled jacket. The heat -proof baffle is the heat -proof baffle for magnesium ingot smelting reduction jar in the first aspect.

[0021] The utility model has the advantages of:

[0022] 1. The heat -proof baffle can force the magnesium vapor in the reduction jar to enter the shell through the air inlet, and then enter the crystallization barrel through the air outlet. Because the position of the air outlet is designed to be opposite to the center of the crystallization barrel, the magnesium vapor that originally diffuses in all directions can be concentrated and guided into the crystallization barrel, avoiding the crystallization of magnesium vapor on the outer wall of the crystallization barrel, thereby greatly reducing the generation of "big head magnesium".

[0023] 2. The heat -proof baffle in the prior art is used for heat insulation, and the utility model improves the original unrelated heat -proof baffle, so that the heat -proof baffle can guide the magnesium vapor to enter the crystallization barrel, thereby reducing the generation of "big head magnesium". It provides a new way to reduce the generation of "big head magnesium", which has great application value. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed in the following embodiment or prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the utility model, and those skilled in the art can obtain other drawings according to these drawings without creating creative labor.

[0025] Figure 1 It is the installation schematic view of the heat -proof baffle for magnesium ingot smelting reduction jar in use.

[0026] Figure 2 It is the structure schematic view of the shell in embodiment 1.

[0027] Figure 3 It is the sectional view of Figure 2 .

[0028] Figure 4 Structure diagram of the shell in Example 2;

[0029] Figure 5 Structure diagram of the shell in Example 2; Figure 4 Structure diagram of the shell in Example 2;

[0030] Figure 6 Structure diagram of the shell in Example 3;

[0031] Figure 7 Structure diagram of the shell in Example 3; Figure 6 Structure diagram of the shell in Example 3;

[0032] Figure 8 Structure diagram of the shell in Example 4;

[0033] Figure 9 Structure diagram of the heat insulation baffle in Example 4 when installed;

[0034] Figure 10 Structure diagram of the heat insulation baffle in Example 4 when installed;

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

[0036] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0037] It should be noted that when a component is referred to as "mounted on" another component, it can be directly on the other component or there can be a middle component. When a component is referred to as "disposed on" another component, it can be directly disposed on the other component or there can be a middle component. When a component is referred to as "fixed on" another component, it can be directly fixed on the other component or there can be a middle component.

[0038] It should be understood that the terms "length", "width", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like, indicate directions or positions based on the directions or positions shown in the drawings, and are used only for the purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

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

[0040] Please refer to Figure 1 The heat insulation baffle for magnesium ingot smelting reduction tank provided by the present application is arranged between the magnesium ingot reduction tank 1 and the crystallizing barrel 2, and more specifically, at the tank opening of the reduction tank 1, and is used to reduce the heat transfer from the magnesium ingot reduction tank 1 to the crystallizing barrel 2.

[0041] The heat insulation baffle for magnesium ingot smelting reduction tank includes an enclosed shell 3 and a filter screen 4. The size of the shell 3 matches the size of the tank opening of the reduction tank 1. After the shell 3 is installed, it can basically cover the entire tank opening of the reduction tank 1, and the shell 3 and the tank opening of the reduction tank 1 are transitionally fitted. One end of the shell 3, i.e. the end facing the reduction tank 1, is provided with an air inlet for the magnesium vapor in the reduction tank 1 to enter the shell 3. The other end of the shell 3, i.e. the center position of the end facing the crystallizing barrel 2, is provided with an air outlet for guiding the magnesium vapor to enter the crystallizing barrel 2. The filter screen 4 is connected in the shell 3, and is used to filter impurities passing through the inside of the shell 3.

[0042] Specifically, the structural design of the shell 3 can adopt various ways, as described in the following embodiments.

[0043] Embodiment 1

[0044] Please refer to Figure 2 and Figure 3 ( Figure 2The outer shell 3 comprises a shell body 31, a front plate 32 and a back plate 33. The shell body 31 is designed as a cylinder, and both ends of the shell body 31 are provided with openings. In this embodiment, the length of the shell body 31 along the axis direction is 60-100 mm. The front plate 32 and the back plate 33 are designed as circles with the same size, and are coaxially fixed at both ends of the shell body 31 along the axis direction. Specifically, the outer wall of the front plate 32 is fixed with the inner wall of the opening, and a notch is cut on the circular front plate 32. The notch on the front plate 32 forms the air inlet of the outer shell 3. Similarly, the outer wall of the back plate 33 is fixed with the inner wall of the opening at the other end of the outer shell 3. The difference is that the back plate 33 needs to be provided with an air outlet at the center position, and the air inlet and the air outlet are designed to be staggered along the length direction of the shell body 31, and there is no overlapping part, which is to prevent the heat in the reduction tank 1 from directly entering the crystallization barrel 2 through heat radiation and heat convection, and to improve the heat insulation effect.

[0045] The outer shell 3 and the filter screen 4 can be made of high-temperature-resistant metal, such as some high-temperature alloys based on iron, nickel and cobalt. The filter screen 4 can be designed as 3-5 layers to increase the durability of the filter screen 4 in a high-temperature environment. The filter screen 4 is used to filter impurities in the inside of the outer shell 3, and to prevent impurities in the reduction tank 1 from entering the crystallization barrel 2, such as furnace dust and slag in the reduction tank 1.

[0046] Embodiment 2

[0047] Please refer to Figure 4 and Figure 5 ( Figure 4 The filter screen 4 is not shown in the figure. Compared with Embodiment 1, the shell body 31 and the front plate 32 in Embodiment 2 are designed the same as in Embodiment 1, and the difference is in the structure design of the back plate 33. In this embodiment, the diameter of the back plate 33 is larger than the outer diameter of the shell body 31. When the back plate 33 is coaxially connected with the shell body 31, the outer edge of the back plate 33 protrudes to the outside of the cross section of the shell body 31. In this way, when the heat insulation baffle is installed, the protruding outer edge of the back plate 33 can tightly contact the tank opening of the reduction tank 1, increase the sealing property of the tank opening, reduce the leakage amount of magnesium vapor in the reduction tank 1 from the periphery of the heat insulation baffle, and force the magnesium vapor to enter the crystallization barrel 2 as much as possible through the air inlet and the air outlet.

[0048] Embodiment 3

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

[0050] Embodiment 4

[0051] Please refer to Figure 8 , in this embodiment, a sealing lip 9 is fixed on the side of the shell 3 where the gas outlet is provided. The sealing lip 9 is designed as a thin-walled circular truncated cone (or a circular ring) coaxial with the shell 31. As shown in Figure 9 , the purpose of this design is to enable the outer wall of the sealing lip 9 to contact the inner wall of the water-cooled jacket 10, and to enable one end of the sealing lip 9 to abut against the opening of the crystallization barrel 2, thereby forming a relatively closed gas outlet channel between the gas outlet and the crystallization barrel 2. The magnesium vapor guided by the gas outlet directly enters the crystallization barrel 2 through the gas outlet channel, reducing the leakage amount of magnesium vapor diffusing to the gap between the water-cooled jacket 10 and the crystallization barrel 2. Compared with Embodiment 1, this embodiment can further reduce the generation of "big head magnesium". The heat insulation baffle in Embodiment 1 is easier to install and subsequently remove without the blockage of the sealing lip 9.

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

[0053] The heat insulation baffle for the magnesium ingot smelting reduction pot provided by the utility model is similar to the conventional heat insulation baffle in use, and is arranged between the reduction pot 1 and the crystallization barrel 2. The difference lies in that the heat insulation baffle in the utility model basically seals the opening of the entire reduction pot 1 after installation. Please refer again to Figure 1, the heat insulation baffle blocks the tank opening of the reduction tank 1 entirely, forces 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 opposite to the center of the crystallization barrel 2, the magnesium vapor originally diffused in all directions can be guided into the crystallization barrel 2, so that the magnesium vapor is prevented from crystallizing on the outer wall of the crystallization barrel 2, thereby greatly reducing the generation of "big head magnesium". The traditional heat insulation baffle is simply a baffle, and the purpose is to isolate the heat transfer. For the generation of "big head magnesium", the prior art only improves the process to avoid the generation of "big head magnesium", such as temperature, vacuum degree, calcination time and the like. The utility model provides another new idea to improve the original unrelated heat insulation baffle, so that the heat insulation effect is achieved while the generation of "big head magnesium" is reduced, the reduction effect is remarkable, and the heat insulation baffle has the value of large-area popularization and application.

[0054] To verify the effect of the heat insulation baffle for the magnesium ingot smelting reduction tank, the heat insulation baffle in Example 1 is prepared for experiment. The size of the heat insulation baffle after preparation is as follows: the outer diameter of the shell 3 is 300 mm, the length in the axis direction is 85 mm, the diameter of the air outlet is 75 mm, the air inlet is formed by cutting a notch from the 240 mm position of the diameter end of the front plate 32, and the filter screen 4 is arranged in five layers. The heat insulation baffle with the above-mentioned size is verified for a single reduction tank 1, and is tested in a reduction furnace. The results show that, compared with the existing magnesium ingot production equipment, the crystallization compactness is better after the heat insulation baffle is used; compared with the traditional heat insulation baffle, "big head magnesium" is reduced by about 70%, most of the magnesium enters the inside of the crystallization barrel 2, and only a small part of the magnesium is not in the crystallization barrel 2. Then, the heat insulation baffle with the above-mentioned size is subjected to a whole group of reduction tank 1 experiment, and the experimental results are consistent with the single reduction tank 1 experiment, and the "big head magnesium" phenomenon is basically solved.

[0055] Example 5

[0056] Since the heat insulation baffle is deformed under high temperature and sometimes causes jamming, and the heat insulation baffle itself is hot, the heat insulation baffle is difficult to take out. Therefore, the embodiment provides a heat insulation baffle extractor for taking out the heat insulation baffle for the magnesium ingot smelting reduction tank in the above-mentioned embodiments. As shown in the figure, the heat insulation baffle extractor comprises a rod body 5, a protruding block 6, a stop block 7 and a hammer 8. Figure 10

[0057] ​Specifically, the rod body 5 is a straight rod with a proper length. One end of the rod body 5 is fixed with 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 back plate 33, so that the subsequent pulling of the rod body 5 can take out the heat insulation baffle from the reduction pot 1. The stop block 7 can be provided with two, and are both fixed on the rod body 5. One of the stop blocks 7 is located at the end of the rod body 5 away from the protruding block 6. The hammer 8 is arranged between the two stop blocks 7 and can slide on the rod body 5. The hammer 8 itself has a certain weight, and a handle is arranged on the hammer 8 for easy holding. In use, the worker operates the rod body 5 so that the protruding block 6 hooks the back plate 33, and then knocks the stop block 7 away from the protruding block 6 (i.e. the knocking direction is away from the heat insulation baffle). The impact force generated when the hammer 8 hits makes the heat insulation baffle separate from the reduction pot 1, thereby solving the problem of difficult removal of the heat insulation baffle.

[0058] Embodiment 6

[0059] The embodiment provides a magnesium ingot reduction device, which comprises a reduction pot 1, a crystallization barrel 2, a water-cooled jacket 10 and a heat insulation baffle arranged between the reduction pot 1 and the crystallization barrel 2; one end of the water-cooled jacket 10 is connected with the reduction pot 1; and the crystallization barrel 2 is arranged in the water-cooled jacket 10. The reduction pot 1, the crystallization barrel 2 and the water-cooled jacket 10 can all adopt existing devices, and the heat insulation baffle is the heat insulation baffle in the embodiment 1, the embodiment 2, the embodiment 3 or the embodiment 4.

[0060] Any combination of the technical features in the above embodiments can be made, and in order to make the description simple, all possible combinations of the technical features in the above embodiments are not described, however, as long as the combination of the technical features does not exist contradictory, it should be considered that it is within the scope of the description.

[0061] The above embodiments only express several implementation manners of the utility model, the description is more specific and detailed, but it cannot be understood as the limitation of the utility model patent scope. It should be pointed out that for ordinary skilled persons in the art, without departing from the concept of the utility model, a number of modifications and improvements can be made, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent should be subject to the appended claims.

Claims

1. A heat insulation baffle for magnesium ingot smelting reduction pot, which is arranged at the pot opening of a magnesium ingot reduction pot (1) and used for reducing heat transfer from the magnesium ingot reduction pot (1) to a crystallizing barrel (2). characterized in that The heat insulation baffle for the magnesium ingot reduction pot (1) comprises: an outer shell (3) which is matched in size with the size of the pot opening of the reduction pot (1); when the outer shell (3) is installed, the outer shell (3) is in transition fit with the pot opening of the reduction pot (1); one end of the outer shell (3) is provided with an air inlet for magnesium vapor in the reduction pot (1) to enter the outer shell (3); the other end of the outer shell (3) is provided with a central air outlet for guiding the magnesium vapor to enter the crystallizing barrel (2); and a filter screen (4) which is connected in the outer shell (3); the filter screen (4) is used for filtering impurities entering the outer shell (3) from the reduction pot (1). The outer shell (3) comprises:

2. The heat shield for a magnesium ingot smelting reduction pot as defined in claim 1, wherein a shell body (31) which is open at both ends; a front plate (32) which covers and seals the opening at one end of the shell body (31); the air inlet is arranged on the front plate (32); a rear plate (33) which covers and seals the opening at the other end of the shell body (31); the air outlet is arranged on the rear plate (33). The shell body (31) is cylindrical; 3. The heat shield for a magnesium ingot smelting reduction pot as defined in claim 2, wherein The front plate (32) and the rear plate (33) are both circular and coaxially arranged with the shell body (31); The diameters of the front plate (32) and the rear plate (33) are the same as the opening diameter of the shell body (31). The shell body (31) is cylindrical; 4. The heat shield for a magnesium ingot smelting reduction pot as defined in claim 2, wherein The front plate (32) and the rear plate (33) are both circular and coaxially arranged with the shell body (31); The diameter of the front plate (32) is the same as the opening diameter of the shell body (31); the diameter of the rear plate (33) is greater than the outer diameter of the shell body (31). The shell body (31) is a circular truncated cone; the front plate (32) is located at the upper base of the circular truncated cone, and the rear plate (33) is located at the lower base of the circular truncated cone; 5. The heat shield for a magnesium ingot smelting reduction pot as defined in claim 2, wherein The front plate (32) and the rear plate (33) are both circular and coaxially arranged with the shell body (31); The diameters of the front plate (32) and the rear plate (33) are the same as the opening diameter of the corresponding shell body (31). The air inlet and the air outlet are arranged in a staggered manner in the axial direction of the shell body (31).

6. A heat shield for a magnesium ingot smelting reduction pot according to any one of claims 3 to 5, characterised in that, The side of the outer shell (3) provided with the air outlet is connected with a sealing lip (9) which is used for abutting with the barrel opening of the crystallizing barrel (2) to form an air outlet channel between the air outlet and the crystallizing barrel (2).

7. A heat shield for a magnesium ingot smelting reduction pot according to any one of claims 3 to 5, characterised in that, The lengths of the air inlet and the air outlet in the axial direction of the shell body (31) are set to 60-100 mm; 8. The thermally insulated baffle for a magnesium ingot smelting reduction pot according to claim 1, wherein The outer shell (3) and the filter screen (4) are both made of metal; the filter screen (4) is provided with 3-5 layers. It is used for taking out the heat insulation baffle for the magnesium ingot smelting reduction pot according to any one of claims 1 to 8; the baffle taker comprises:

9. An insulating baffle extractor characterized by, a rod body (5); a protruding block (6) which is connected at one end of the rod body (5); the protruding block (6) is used for extending into the air outlet and hooking the outer shell (3); a stop block (7) which is connected on the rod body (5); and ​ A hammer (8) is slidingly connected to the rod body (5); said hammer (8) is used to hit the stopper (7) so that the protruding block (6) pulls the shell (3).

10. A magnesium ingot reduction device, comprising a reduction pot (1), a crystallization barrel (2), a water-cooled jacket (10), and a heat insulation baffle arranged between the reduction pot (1) and the crystallization barrel (2); one end of the water-cooled jacket (10) is connected with the reduction pot (1); the crystallization barrel (2) is arranged in the water-cooled jacket (10); characterized in that The heat insulation baffle is the heat insulation baffle for the magnesium ingot reduction pot (1) according to any one of claims 1 to 8.

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