Magnesium vapor collection and purification integrated system and method

Abstract

The invention discloses a magnesium vapor collection and purification integrated system and method, and belongs to the technical field of magnesium alloy purification. Comprising a refining furnace and an impurity removal chamber which are detachably connected. The method comprises the steps that crude magnesium high-temperature steam obtained after a thermal reduction reaction enters a refining furnace containing magnesium liquid through a pipeline to be liquefied, the magnesium liquid in the refining furnace can rotate in the furnace along with rotation of the refining furnace to react with the high-temperature magnesium steam, then a crystallizing agent is added into an impurity removal chamber to enable impurity metal to be precipitated, filtering is conducted, and slag and magnesium separation is achieved; and finally, high-purity magnesium is obtained through cooling. By means of the method, low-temperature, efficient and high-purity magnesium metal purification is achieved.

Description

Technical Field

[0001] The invention belongs to the technical field of magnesium alloy purification, and in particular relates to an integrated system and method for collecting and purifying magnesium vapor. Background Art

[0002] The magnesium metal production process includes two parts: raw magnesium smelting and refining. In the raw magnesium smelting stage, the reduced magnesium vapor is first crystallized through a condensation chamber to form crystalline magnesium, and then the solid crystalline magnesium is taken out for liquefaction and refining. Refining through the above two stages has the problem of increased energy consumption due to the remelting of crystalline magnesium.

[0003] In the refining stage of magnesium metal, the main methods include zone melting, electrolysis and vacuum distillation. The zone melting method is to melt the magnesium metal locally, and use the difference in solubility of impurities in the solid and liquid metal to precipitate the impurities in the form of solid solution, so as to separate the impurities from the magnesium metal. This method has low purification efficiency due to the easy evaporation of magnesium and the slow zone melting speed. The principle of the electrolysis method is to convert the crude magnesium into magnesium chloride and add it to the electrolytic cell, and then pass direct current. The magnesium ions are reduced to magnesium metal at the cathode and float on the surface of the electrolyte. This method can effectively extract pure magnesium metal from the crude magnesium, but its disadvantages are that the electrolyte reaction has side reactions, low electrolysis efficiency, high energy consumption, and low magnesium purity. The principle of the vacuum distillation method is to put the crude magnesium into a distillation tank, use a heating furnace for high-temperature heating and vacuum treatment, and use the different saturated vapor pressures of magnesium metal and other impurity metals and the evaporation and condensation characteristics at different temperatures. Part of the impurity metal remains in the liquid phase, and the magnesium vapor is condensed and collected in the crystallizer to obtain high-purity magnesium. Compared with the first two methods, vacuum distillation can obtain crystalline magnesium with higher purity, so it is currently the most commonly used method for preparing high-purity magnesium. However, the disadvantage is that since distillation generally requires a high temperature of 1200°C, the equipment is complicated, the process time is long, and the high temperature causes greater damage to the equipment. In the preheating process of some distillations, the impurity vapor condenses and crystallizes and mixes with the crystalline magnesium, resulting in unstable purity of the purified metal magnesium, which makes the purification efficiency low. Although the vacuum distillation method can purify magnesium metal with higher purity than other methods, there are still problems such as small amount of collected magnesium, unstable purity control, excessive distillation temperature damaging the furnace body, long time and low efficiency. Therefore, industry insiders continue to explore and research efficient methods for purifying magnesium metal. A vertical metal purification furnace and a method for preparing high-purity magnesium (202110092642.9) adopt an integrated structure to effectively produce high-purity magnesium through an integrated furnace body, a cooling crystallization device and a mobile lifting and discharging device. Although the three-dimensional metal purification furnace has the advantages of collecting a large amount of magnesium, high efficiency, convenient discharging, and high magnesium purity, it still has high distillation temperature, high energy consumption, and great damage to the furnace body; during the preheating process, impurity vapor crystallizes on the crystallizer and is mixed with magnesium vapor after crystallization, affecting the purity of magnesium. Summary of the invention

[0004] The purpose of the present invention is to overcome the shortcomings of the above-mentioned prior art and provide an integrated system and method for collecting and purifying magnesium vapor to solve the problems in the prior art of purifying metallic magnesium by vacuum distillation, such as high distillation temperature, high energy consumption and great damage to the furnace body during the purification process.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions: A magnesium vapor collection and purification integrated device comprises a refining furnace, one end of the refining furnace is provided with a feed port, and the other end is provided with a discharge port; the refining furnace is also connected to a vacuum pump, the two ends of the refining furnace are respectively connected to a rotating mechanism, and a heating device is provided in the side wall of the refining furnace; The discharge port is detachably connected to a de-impurity chamber, the de-impurity chamber is provided with a crystallizing agent addition port, and a magnesium collection port is provided at the bottom; The refining furnace is provided with a plurality of circumferential grooves along the axial direction, and the circumferential grooves include a bearing plate, a splash plate and an intercepting plate connected in one piece, the bearing plate is arranged along the radial direction of the refining furnace, one end of the bearing plate is connected to the inner wall of the refining furnace, the other end is connected to one end of the splash plate, and the other end of the splash plate is connected to the intercepting plate; a liquid storage tank is provided between the bearing plate, the splash plate and the intercepting plate; During the purification process, the direction from the supporting plate to the intercepting plate is the rotation direction of the refining furnace.

[0006] A further improvement of the present invention is: Preferably, the rotating mechanism includes two rotating gears arranged at both ends of the refining furnace, and the rotating gears are connected to a motor; the feed port passes through one rotating gear, and the feed port and the rotating gear are rotationally connected; the connecting pipeline between the vacuum pump and the refining furnace passes through another rotating gear, and the connecting pipeline and the rotating gear are rotationally connected.

[0007] Preferably, the furnace wall of the refining furnace comprises an inner shell and an outer shell, the inner shell and the outer shell are rotatably connected, and two ends of the inner shell are respectively connected to the feed port and the vacuum pump.

[0008] Preferably, a heat-insulating layer is provided between the inner shell and the outer shell, and a heating wire is arranged in the heat-insulating layer.

[0009] Preferably, the angle between the bearing plate and the intercepting plate is 70°-120°.

[0010] Preferably, the length of the intercepting plate is ≤ 50% of the length of the supporting plate.

[0011] Preferably, a feed pipeline (131) is provided at the upper end of the impurity removal chamber, and the feed pipeline (131) and the discharge port are connected via a flange; and a valve is provided on the discharge port.

[0012] Preferably, a second valve is provided in the impurity removal chamber, and the second valve covers a cross section of the impurity removal chamber.

[0013] Preferably, a filter screen is provided in the impurity removal chamber, and a slag outlet is provided on a side wall of the impurity removal chamber, and the slag outlet is beside the filter screen.

[0014] A method for collecting and purifying magnesium vapor based on the above integrated device comprises the following steps: Step 1, placing a magnesium block in a refining furnace, evacuating the refining furnace, and heating the refining furnace to 700° C. by a heating device; Step 2, the magnesium block is completely melted into magnesium liquid and covers the circumferential groove; Step 3, disassemble the impurity removal chamber and the refining furnace, and drive the refining furnace to rotate through the rotating mechanism; during the rotation process, the vacuum pump draws air so that the crude magnesium vapor enters the refining furnace from the feed port; the circumferential groove drives the magnesium liquid to move upward, and the magnesium liquid is affected by gravity and falls downward while mixing with the magnesium vapor and eluting, and the magnesium liquid is purified for the first time; Step 4, after the reaction is completed, the rotation is stopped, the refining furnace and the impurity removal chamber are connected, the magnesium liquid obtained by the first purification enters the impurity removal chamber, and after the magnesium liquid reacts with the crystallizer, the second purified magnesium liquid is obtained, and the magnesium liquid after the second purification is discharged from the impurity removal chamber.

[0015] Compared with the prior art, the present invention has the following beneficial effects: The present invention discloses an integrated device for collecting and purifying magnesium vapor, wherein a refining furnace is arranged to be rotatable around an axial direction, and a plurality of circumferential grooves are arranged inside the furnace body of the refining furnace, and the cross-section of the circumferential grooves is "L"-shaped. During the CAD rotation process, the magnesium liquid is brought to a high position in the refining furnace by the plurality of circumferential grooves, and at the same time, crude magnesium vapor is introduced into the feed port, and the crude magnesium vapor and the magnesium liquid are contacted and eluted. Aiming at the problem of high energy consumption in the process of purifying magnesium metal, the present invention utilizes the large temperature difference between the melting point of the metal of 647°C and the boiling point of 1107°C, and directly introduces the magnesium vapor prepared by the thermal reduction method into a horizontal tank containing magnesium liquid at 700°C. After elution and mixing, a crystallizing agent is added to precipitate the impurity metal, and then the magnesium metal is obtained through filtration and condensation, so as to achieve the purpose of purifying magnesium metal at low temperature, high efficiency and high purity. The device of the present invention also has the following advantages: (1) High magnesium vapor collection efficiency The invention utilizes the large temperature difference between the melting point and boiling point of metallic magnesium, and directly introduces the crude magnesium vapor generated by the magnesium reduction reaction into a refining furnace containing magnesium liquid. The magnesium vapor is cooled and liquefied after being eluted with magnesium liquid to realize magnesium vapor collection and refining by adding a crystallizing agent, with a short process and a high collection rate.

[0016] (2) High waste heat utilization rate The magnesium vapor at about 1200°C and the magnesium liquid at about 700°C produced by magnesium reduction, through elution mixing and heat exchange, replace the crystalline magnesium condensation-low-temperature stripping-reheating refining process, recover the waste heat to reduce remelting and supplementary heat, and have a high recycling rate.

[0017] (3) Continuous and large-scale preparation with low energy consumption The magnesium metallurgical shaft furnace reduction solves the problem of magnesium reduction continuity, but does not solve the problem of raw magnesium recovery continuity. The present invention controls the temperature of the eluted magnesium solution at about 700°C (above the melting point of magnesium) by synergizing the early heating and the later magnesium vapor waste heat recovery, eliminating the raw magnesium remelting process, shortening the entire process, and can purify more raw magnesium at one time or continuously, reducing energy consumption.

[0018] (4) High efficiency The crude magnesium vapor generated by the thermal reduction method directly enters the refining furnace through a pipeline for gas-liquid mixing and collection, and then a crystallizing agent is added to purify the crude magnesium, shortening the time from thermal production of magnesium to purification.

[0019] (5) High purity Magnesium vapor is eluted and recovered at 700℃, which is much higher than the condensation and crystallization temperature of circulating water, which is conducive to the first separation of low-boiling impurity elements and magnesium. After treatment and filtration at the crystallizer, secondary separation is achieved to obtain a magnesium ingot with higher purity. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a system structure diagram of the present invention; Figure 2 It is a partial diagram of the heating device in the refining furnace of the present invention; Figure 3 It is a cross-sectional view of the refining furnace of the present invention.

[0021] Among them: 1. feed port; 2. rotating gear; 3. heating device; 4. refining furnace; 5. circumferential groove; 6. vacuum pump; 7. first valve; 8. flange; 9. crystallizing agent addition port; 10. second valve; 11. slag outlet; 12. filter screen; 13. impurity removal chamber; 14. magnesium collection port; 31. insulation layer; 32. heating wire; 33. connecting pipeline; 41. inner shell; 42. outer shell; 51. bearing plate; 52. splash plate; 53. interception plate; 131. feed pipeline. DETAILED DESCRIPTION

[0022] The present invention is further described in detail below in conjunction with the accompanying drawings: Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0023] The present invention adopts a horizontal tank type high-efficiency purification method for magnesium metal, wherein the high-temperature vapor of crude magnesium after thermal reduction reaction enters a refining furnace containing magnesium liquid through a pipeline for liquefaction, and then a crystallizing agent is added to precipitate the impure metals and filter to separate the slag from the magnesium, and finally high-purity magnesium is obtained after cooling. The method can realize low-temperature, high-efficiency and high-purity purification of magnesium metal.

[0024] See also Figure 1 In order to implement the above method, the first aspect of the present invention discloses an integrated system for collecting and purifying magnesium vapor, the main structure of which includes a refining furnace 4 and a decontamination chamber 13.

[0025] The refining furnace 4 is a cylindrical furnace body with sealed ends at both ends, the two ends are respectively a feed end and a discharge end, the feed end is provided with a feed port 1, the discharge end is provided with a discharge port, and a valve 7 is provided on the discharge port; both ends of the entire refining furnace 4 are provided with a rotating mechanism.

[0026] A circumferential groove 5 is arranged inside the furnace body of the refining furnace 4. The circumferential groove 5 is made of stainless steel and arranged along the axial direction of the refining furnace 4. The circumferential groove 5 includes a bearing plate 51, a splash plate 52 and an intercepting plate 53 which are connected in an integral manner. The bearing plate 51 is arranged along the radial direction of the refining furnace 4. One end of the bearing plate 51 is connected to the inner wall of the refining furnace 4, and the other end is connected to one end of the splash plate 52. The other end of the splash plate 52 is connected to the intercepting plate 53. An "L"-shaped liquid storage tank 54 is formed between the bearing plate 51, the splash plate 52 and the intercepting plate 53. The intercepting plate 3 is on one side of the bearing plate 51, and the side of the intercepting plate 3 is in the opposite direction of the rotation of the refining furnace 4, that is, during the purification process, the direction from the bearing plate 51 to the intercepting plate 53 is the rotation direction of the refining furnace 4. In this way, the liquid storage tank 54 can carry a certain amount of magnesium liquid during the rotation process. The support plate 51 in the structure is used to receive the magnesium liquid and move it upwards, and the splash plate 52 is used to prevent the magnesium liquid from being thrown out due to the centrifugal force during the rotation process. The interception plate 51 can extend the time that the magnesium liquid stays in the liquid storage tank 54 as much as possible.

[0027] Preferably, the angle between the plane of the supporting plate 51 and the intercepting plate 53 is 70°-120°, so that the two form a liquid storage tank 54. More preferably, it is 90°, which can meet the requirements.

[0028] Preferably, the length of the intercepting plate 53 is ≤ 50% of the length of the supporting plate 51 , so that the intercepting plate 53 can prevent the magnesium liquid from escaping from the liquid storage tank 54 too early and at the same time allow the magnesium liquid to flow downward under the action of gravity at the highest point.

[0029] In some embodiments of the present invention, the rotating mechanism includes two rotating gears 2 disposed at two ends of the refining furnace 4, and each rotating gear 2 is connected to a motor.

[0030] Preferably, a rotating gear 2 is provided at one end of the feed end, and the feed port 1 passes through the rotating gear 2, and the two are rotationally connected; in this embodiment, the feed port 1 is arranged on the axis of the refining furnace 4, and the other end of the feed port 1 is connected to the crude magnesium steam inlet.

[0031] Preferably, a rotating gear 2 is provided at one end of the discharge end, and a connecting pipeline 33 between the vacuum pump 6 and the refining furnace 4 passes through the rotating gear 2 at the discharge end, and the connecting pipeline 33 and the rotating gear 2 are rotatably connected; in this embodiment, the connecting pipeline 33 is arranged on the axis of the refining furnace 4.

[0032] In some embodiments of the present invention, the furnace wall of the refining furnace 4 includes an inner shell 41 and an outer shell 42, the two ends of the inner shell 41 and the outer shell 42 are rotatably connected, and the two ends of the inner shell 41 are respectively connected to the feed port and the vacuum pump 6; the wall of the refining furnace 4 is provided with an insulation layer 31, and the insulation layer 31 is provided with a heating wire 32. The arrangement of the heating wire 32 in the furnace wall can be adjusted according to actual conditions, and the heating wire 32 is usually arranged in the furnace wall in a serpentine or winding shape. This structure allows the inner shell 41 to rotate, but the outer shell 42 will not rotate, which can ensure the continuous and efficient operation of the entire heating device 3 and improve the safety of the operation of the entire system.

[0033] Preferably, the heating wire 32 of the present invention completely wraps around the furnace wall of the refining furnace 4 to ensure the heating effect of the entire refining furnace 4 .

[0034] The discharge port is arranged at the side of the feed end surface, and is connected to the upper feed port of the impurity removal chamber 13 through a flange 8. The upper end of the impurity removal chamber 13 is also provided with a crystallization agent addition port 9.

[0035] A second valve 10 is provided in the impurity removal chamber 13. The second valve 10 is provided in the middle and upper part of the impurity removal chamber 13. The second valve 10 covers a cross section of the impurity removal chamber 13 so as to directly block the entire impurity removal chamber 13. A filter screen 12 is provided below the valve 10 in the impurity removal chamber 13. A slag outlet 11 is provided on the same horizontal plane as the filter screen 12 so that impurities filtered by the filter screen 12 can be discharged from the slag outlet 11. A magnesium collection port is provided at the bottom of the impurity removal chamber 13.

[0036] The second aspect of the present invention discloses a method for collecting and purifying magnesium vapor, the specific steps of which are as follows: Step 1, charging. When charging, first open the sealing cover of the feed port 1, put the magnesium block on the bottom of the refining furnace 4 with a long clip, and seal the feed port with a cover after the charging is completed; the magnesium block is crude magnesium with a purity of ≥99%.

[0037] Step 2, evacuate the feed port 1 using a vacuum pump 6 to prevent the magnesium from being oxidized.

[0038] Step 3, device startup: turn on the heating device 3, heat the temperature inside the refining furnace 4 to above 700°C, melt the magnesium block at the bottom of the refining furnace 4 into magnesium liquid, and the amount of magnesium liquid after melting should be higher than the height of the circumferential groove 5 of the refining furnace 4; close the valve 7, remove the connecting flange 8, and the motor drives the rotating gears 2 on both sides of the device to work, and the furnace starts to rotate clockwise. Step 3, gas-liquid mixing, the feed port 1 is connected to the pipeline to pass the crude magnesium vapor into the refining furnace under the action of the vacuum pump 6, the furnace pressure in the refining furnace 4 is about 10Pa, the circumferential groove 5 brings the magnesium liquid from the bottom to the top (the circumferential groove is provided with a liquid storage tank), falls under the action of gravity and mixes with the magnesium vapor and leaches, and the magnesium vapor is cooled and liquefied to become the leached magnesium liquid. In this process, the low melting point impurities in the magnesium liquid are evaporated and flow into the next stage exhaust device with the steam, and the magnesium element in the magnesium vapor is cooled and liquefied to become magnesium liquid, which improves the magnesium content in the magnesium liquid, and completes the first purification of the magnesium liquid and the crude magnesium vapor, and the purity of the crude magnesium vapor is 95%-99.8%.

[0039] Step 4, adding a crystallizing agent: after the reduction reaction is completed, the motor is turned off, the refining furnace 4 stops rotating, the flange 8 is connected, the valve 10 is closed, the valve 7 is opened, and the magnesium liquid enters the impurity removal chamber 13 through the pipeline, and then the crystallizing agent is added from the crystallizing agent adding port 9 (the crystallizing agent composition includes MgCl2 of 38±3, KCl of 37±3, NaCl of 8±3, BaCl2 of 9±3, CaF2 of 6%-10%, which can react with impurity metals such as Fe, Cu, Mn, Pb in the magnesium liquid to generate compound precipitation), completing the second purification of the magnesium liquid.

[0040] Step 5, filtering and condensing: After the magnesium liquid and the crystallizing agent are mixed for a period of time, the valve 10 is opened, and the slag is taken out from the slag outlet 11 after passing through the filter screen 12, and the magnesium liquid is taken out from the magnesium collection port 14 after condensation.

[0041] By applying the above method, the magnesium liquid is purified. In a specific embodiment, 500 g of magnesium block is added, the vacuum degree is 10 Pa, and the operation is performed for 10 minutes. The purity of the collected magnesium liquid is 99.95%.

[0042] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more. In the description of the present invention, the first feature "above" or "below" the second feature may include the first and second features being in direct contact, or the first and second features not being in direct contact but being in contact through another feature between them.

[0043] In the description of the present invention, “on”, “over” and “above” a first feature from a second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature.

[0044] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0045] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0046] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

[0047] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A magnesium vapor collection and purification integrated device, characterized in that: The refining furnace (4) comprises a refining furnace (4), wherein one end of the refining furnace (4) is provided with a feed port (1), and the other end is provided with a discharge port; the refining furnace (4) is also connected to a vacuum pump (6), and both ends of the refining furnace (4) are respectively connected to a rotating mechanism, and a heating device (3) is provided in the side wall of the refining furnace (4); The discharge port is detachably connected to a de-impurity chamber (13), the de-impurity chamber (13) is provided with a crystallizing agent addition port (9), and a magnesium collection port (14) is provided at the bottom; The refining furnace (4) is provided with a plurality of circumferential grooves (5) along the axial direction. The circumferential grooves (5) include a bearing plate (51), a splash plate (52) and an intercepting plate (53) which are integrally connected. The bearing plate (51) is arranged along the radial direction of the refining furnace (4). One end of the bearing plate (51) is connected to the inner wall of the refining furnace (4), and the other end is connected to one end of the splash plate (52). The other end of the splash plate (52) is connected to the intercepting plate (53). A liquid storage tank (54) is provided between the bearing plate (51), the splash plate (52) and the intercepting plate (53). During the purification process, the direction from the supporting plate (51) to the intercepting plate (53) is the rotation direction of the refining furnace (4).

2. The magnesium vapor collection and purification integrated device according to claim 1, characterized in that: The rotating mechanism comprises two rotating gears (2) arranged at both ends of the refining furnace (4), the rotating gears (2) being connected to a motor; the feed port (1) passes through one rotating gear (2), the feed port (1) and the rotating gear (2) being rotationally connected; and the connecting pipeline (33) between the vacuum pump (6) and the refining furnace (4) passes through another rotating gear (2), the connecting pipeline (33) and the rotating gear (2) being rotationally connected.

3. The magnesium vapor collection and purification integrated device according to claim 1, characterized in that: The furnace wall of the refining furnace (4) comprises an inner shell (41) and an outer shell (42), the inner shell (41) and the outer shell (42) are rotatably connected, and the two ends of the inner shell (41) are respectively connected to the feed port (1) and the vacuum pump (6).

4. The magnesium vapor collection and purification integrated device according to claim 3, characterized in that: A heat-insulating layer (31) is provided between the inner shell (41) and the outer shell (42), and a heating wire (32) is arranged in the heat-insulating layer (31).

5. The magnesium vapor collection and purification integrated device according to claim 1, characterized in that: The angle between the bearing plate (51) and the intercepting plate (53) is 70°-120°.

6. The magnesium vapor collection and purification integrated device according to claim 1, characterized in that: The length of the intercepting plate (53) is ≤ 50% of the length of the supporting plate (51).

7. The integrated device for collecting and purifying magnesium vapor according to claim 1, characterized in that: An inlet pipeline (131) is provided at the upper end of the impurity removal chamber (13), and the inlet pipeline (131) and the outlet are connected via a flange (8); a valve (7) is provided on the outlet.

8. The magnesium vapor collection and purification integrated device according to claim 1, characterized in that: A second valve (10) is arranged in the impurity removal chamber (13), and the second valve (10) covers a cross section of the impurity removal chamber (13).

9. The magnesium vapor collection and purification integrated device according to claim 1, characterized in that: A filter screen (12) is arranged in the impurity removal chamber (13), and a slag outlet (11) is provided on a side wall of the impurity removal chamber (13), the slag outlet (11) being located beside the filter screen (12).

10. A method for collecting and purifying magnesium vapor based on the integrated device of claim 1, characterized in that: The following steps are involved: Step 1, placing a magnesium block in a refining furnace (4), evacuating the refining furnace (4), and then heating the refining furnace (4) to 700° C. using a heating device (3); Step 2, the magnesium block is completely melted into magnesium liquid and covers the circumferential groove (5); Step 3, disassembling the impurity removal chamber (13) and the refining furnace (4), and driving the refining furnace (4) to rotate by means of a rotating mechanism; during the rotation process, the vacuum pump (4) draws air so that crude magnesium vapor enters the refining furnace (4) from the feed inlet (1); The circumferential groove (5) drives the magnesium liquid to move upward. Under the action of gravity, the magnesium liquid falls downward and mixes with the magnesium vapor and is eluted, and the magnesium liquid is purified for the first time. Step 4, after the reaction is completed, the rotation is stopped, the refining furnace (4) and the impurity removal chamber (13) are connected, the magnesium liquid obtained by the first purification enters the impurity removal chamber (13), and after the magnesium liquid reacts with the crystallization agent, the second purified magnesium liquid is obtained, and the magnesium liquid after the second purification is discharged from the impurity removal chamber (13).

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