Lithium magnesium alloy production device

Abstract

The utility model relates to the technical field of alloy production devices, and provides a lithium magnesium alloy production device which comprises a heating crucible, a first control valve, a filter screen, a stirring unit, an air source, a plurality of turbulent flow ribs and a casting mold, the heating crucible is used for heating and melting lithium magnesium alloy, and a casting pipe is arranged on the lower portion of the heating crucible; the first control valve is arranged on the casting pipe; the filter screen is arranged in the casting pipe and located below the first control valve. The stirring unit is partially arranged in the heating crucible, and a plurality of air outlet holes are formed in the bottom of the stirring unit; the air source is communicated with the plurality of air outlets; the plurality of turbulent flow ribs are annularly arranged along the inner wall of the heating crucible; the casting mold can move to the position below the casting pipe so that the filtered lithium magnesium alloy melt can flow into the casting mold. According to the lithium magnesium alloy production device, as long as magnesium metal and molten lithium metal are continuously added into the heating crucible, continuous production of lithium magnesium alloy ingots can be achieved, and the production efficiency of the lithium magnesium alloy is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to alloy production device technical field especially relates to a lithium magnesium alloy production device. BACKGROUND

[0002] Lithium metal has shown a wide range of application potential in numerous high-tech and industrial fields, including atomic energy, aerospace, alloy manufacturing, lithium battery technology, controlled nuclear fusion reactors, synthetic rubber production, and pharmaceutical industries. In particular, in the field of lithium battery technology, lithium metal has become the preferred negative electrode material for the next generation of high-energy lithium secondary batteries, as it can significantly increase the energy density of the battery. In recent years, with the surge in demand for new energy vehicles, smartphones, and other electronic products, the global demand for high-performance battery materials has also risen, and the lithium market has experienced rapid growth.

[0003] Under this background, solid-state battery technology has become a highly regarded research field. One significant development trend for solid-state batteries is the gradual replacement of traditional silicon-carbon anodes with lithium metal (or lithium alloy) anodes in order to achieve a significant increase in energy density. Research reports indicate that lithium-magnesium alloy as an anode material has many performance advantages over pure lithium anodes, such as higher cycle stability, lower interfacial impedance, and better kinetic characteristics. These advantages make lithium-magnesium alloy have broad application prospects in the field of solid-state batteries. However, the preparation process of lithium-magnesium alloy faces many challenges, and the production of lithium-magnesium alloy must be carried out in an atmosphere that is isolated from oxygen and moisture, which greatly limits the size and scale of the production equipment and affects the production efficiency of lithium-magnesium alloy. SUMMARY

[0004] The utility model provides a kind of lithium magnesium alloy production device to solve the defect of low lithium magnesium alloy production efficiency in prior art.

[0005] The utility model provides a kind of lithium magnesium alloy production device, comprising: heating crucible, the heating crucible is used to heat and melt lithium magnesium alloy, the lower part of the heating crucible has casting pipe;First control valve is set in the casting pipe;Filter screen is set in the casting pipe and is located below the first control valve, and the cavity is formed between the filter screen and the first control valve;Stirring unit, part of the stirring unit is set in the heating crucible, and the stirring unit is used to stir lithium magnesium alloy melt in the heating crucible, and the bottom of the stirring unit is equipped with multiple gas outlets;Gas source, which is communicated with multiple gas outlets;Multiple turbulence ribs are annularly arranged along the inner wall of the heating crucible;Casting mold, the casting mold can be moved to the lower side of the casting pipe, so that filtered lithium magnesium alloy melt flows into the casting mold.

[0006] According to the lithium-magnesium alloy production device, each of the turbulence ribs is arranged in parallel with the axis of the stirring unit or is arranged at an angle with the axis of the stirring unit.

[0007] According to the lithium-magnesium alloy production device, the surface of the turbulence rib towards the stirring unit is circularly arc transitioned or circularly corner transitioned with the adjacent surface.

[0008] According to the lithium-magnesium alloy production device, further comprising: a pressure sensor arranged in the cavity, the pressure sensor is used for detecting the air pressure in the cavity; a first pipeline, a first end of the first pipeline is connected with the air source; a collecting box, a second end of the first pipeline is communicated with the collecting box; a suction pipe, two ends of the suction pipe are respectively communicated with the cavity and the collecting box, the suction pipe is used for sucking the blockage on the filter screen into the collecting box by using negative pressure, so that the filter screen is unobstructed.

[0009] According to the lithium-magnesium alloy production device, the stirring unit comprises: a driver; a stirring rod connected with the driver, an internal passage is arranged in the stirring rod, a plurality of air outlets are arranged at the bottom of the stirring rod, and the air outlets are communicated with the internal passage; and a second pipeline, two ends of the second pipeline are respectively communicated with the internal passage and the air source.

[0010] According to the lithium-magnesium alloy production device, further comprising: a first stock bin, a lithium metal melt is arranged in the first stock bin; a third pipeline, two ends of the third pipeline are respectively communicated with the first stock bin and the heating crucible; and a second control valve arranged in the third pipeline.

[0011] According to the lithium-magnesium alloy production device, further comprising: a second stock bin provided with magnesium metal; a weight sensor arranged at the lower part of the second stock bin, the weight sensor is used for detecting the weight of the second stock bin; and a conveying belt, two ends of the conveying belt are respectively communicated with the second stock bin and the heating crucible, and the conveying belt is used for conveying magnesium metal.

[0012] According to the lithium-magnesium alloy production device, further comprising a lifting mechanism connected with the stirring unit, the lifting mechanism is used for driving the stirring unit to lift.

[0013] According to the lithium-magnesium alloy production device, further comprising a cooling unit, the cooling unit is used for cooling the casting mold after the lithium-magnesium alloy is poured into the casting mold.

[0014] The lithium-magnesium alloy production device further comprises: a plurality of thermocouples, which are arranged on the inner walls of the first material bin and the heating crucible respectively, and are used for detecting the temperature in the first material bin and the heating crucible; and a controller, which is electrically connected with the plurality of thermocouples and is used for controlling the heating temperature of the first material bin and the heating crucible according to the temperature detected by the thermocouples.

[0015] The lithium-magnesium alloy production device provided by the utility model can realize continuous production of lithium-magnesium alloy ingots as long as magnesium metal and molten lithium metal are continuously added into the heating crucible, and the production efficiency of lithium-magnesium alloy is improved. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the utility model or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description, and obviously, the drawings in the following description are some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained according to these drawings without creative labor.

[0017] Figure 1 It is a structure schematic view of the lithium-magnesium alloy production device provided by the utility model.

[0018] Figure 2 It is Figure 1 It is a structure schematic view of the heating crucible shown in the utility model.

[0019] Figure 3 It is Figure 1 It is a structure schematic view of the stirring unit shown in the utility model.

[0020] REFERENCE NUMERALS

[0021] 11, first material bin;12, third pipeline;13, second control valve;14, second heating and heat preservation structure;15, second thermocouple;21, second material bin;22, weight sensor;23, conveying belt;31, crucible;32, casting pipe;33, first control valve;34, spoiler rib;35, first thermocouple;36, first heating and heat preservation structure;41, filter screen;42, first pipeline;43, collection box;44, suction pipe;51, stirring rod;52, driver;53, stirring paddle;54, bearing and sealing structure;60, lifting mechanism;70, casting mold;80, controller;100, glove box;511, channel;512, air outlet hole. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical scheme and advantages of the utility model clearer, the technical scheme of the utility model will be described clearly and completely in combination with the drawings in the utility model below. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the ordinary skilled in the art without creative labor belong to the protection scope of the utility model.

[0023] The utility model discloses a lithium-magnesium alloy production device. Figures 1-3 The utility model discloses a lithium-magnesium alloy production device.

[0024] As Figure 1 As shown in the embodiments of the utility model, the lithium-magnesium alloy production device comprises a heating crucible, a casting pipe 32, a first control valve 33, a filter screen 41, a stirring unit, a gas source, a turbulence rib 34 and a casting mold 70.

[0025] The heating crucible is used for heating and melting the lithium-magnesium alloy. The lower part of the heating crucible is provided with the casting pipe 32, and the first control valve 33 is arranged in the casting pipe 32. When the heating crucible heats and melts the lithium-magnesium alloy, the first control valve 33 is in a closed state to avoid the molten melt after melting from flowing out of the casting pipe 32. Part of the stirring unit is arranged in the heating crucible. The stirring unit is used for stirring during the heating and melting of the lithium-magnesium alloy to make the lithium metal and the magnesium metal mix uniformly. The bottom of the stirring unit is provided with a plurality of gas outlets 512. The gas outlets 512 are communicated with the gas source. The gas is sprayed out of the gas outlets 512 to blow the impurities in the lithium-magnesium alloy melt to float on the surface of the melt. The inner wall of the heating crucible is annularly provided with a plurality of turbulence ribs 34. The turbulence ribs 34 make the flow of the lithium-magnesium alloy melt present in a vortex shape when the stirring unit stirs, so that the stirring is more efficient and the dispersion is more uniform. When the lithium-magnesium alloy melt reaches the casting requirement, the first control valve 33 is opened. The lithium-magnesium alloy melt is filtered through the filter screen 41 and then injected into the casting mold 70. The lithium-magnesium alloy is cooled in the casting mold 70 and then demolded to form a lithium-magnesium alloy ingot.

[0026] In the embodiments, the heating crucible comprises a crucible 31 and a first heating and heat preservation structure 36. The first heating and heat preservation structure 36 is used for heating the lithium-magnesium alloy in the crucible 31. The first heating and heat preservation structure 36 can be a heating furnace.

[0027] The lithium-magnesium alloy production device provided by the embodiments of the utility model can realize the continuous production of the lithium-magnesium alloy ingot and improve the production efficiency of the lithium-magnesium alloy as long as the magnesium metal and the melted lithium metal are continuously added into the heating crucible.

[0028] In the embodiment of the utility model, the spoiler rib 34 is arranged along the inner wall surface of the crucible 31, and the spoiler rib 34 can be parallel to the axis of the stirring unit or be arranged at an angle with the axis of the stirring unit. The distance between the top of the spoiler rib 34 and the top of the crucible 31 should be greater than one third of the height of the crucible 31, so as to avoid the lithium-magnesium alloy melt from splashing out when the stirring unit is stirring.

[0029] Further, in the embodiment of the utility model, the surface of the spoiler rib 34 adjacent to the surface of the stirring unit is circularly or angularly transitioned, that is, the surface of the spoiler rib 34 adjacent to the surface of the stirring unit forms a circular arc or a trapezoidal boss, so that the lithium-magnesium alloy melt flows in a vortex shape when the stirring unit is stirring. Optionally, the thickness of the spoiler rib 34 can be 2-15 mm. The number of the spoiler rib 34 can be 2-12.

[0030] The inner wall of the crucible 31 is provided with a first thermocouple 35, which is used to detect the temperature in the crucible 31, so as to adjust the temperature of the first heating and heat preservation structure.

[0031] In the embodiment of the utility model, when the first control valve 33 is closed, a cavity is formed between the first control valve 33 and the filter screen 41. As shown in Figure 2 The lithium-magnesium alloy production device further comprises a pressure sensor, a first pipeline 42, a collection tank 43 and a suction pipe 44. The pressure sensor is arranged in the cavity and is used to detect the pressure in the cavity. The two ends of the first pipeline 42 are respectively communicated with a gas source and the collection tank 43, and the two ends of the suction pipe 44 are respectively communicated with the cavity and the collection tank 43. The gas in the gas source enters the collection tank 43 through the first pipeline 42 and then enters the cavity through the suction pipe 44. When the filter screen 41 is blocked, the gas pressure in the cavity decreases slowly, at which time it can be judged that the filter screen 41 is blocked. Open the first control valve 33 to make a certain amount of high-temperature lithium-magnesium alloy melt flow into the cavity, and then close the first control valve 33. The gas in the cavity is sucked into the gas source, so that the cavity becomes negative pressure, and a pressure difference appears between the upper and lower sides of the filter screen 41, the blockage and the lithium-magnesium alloy melt are sucked into the collection tank 43 through the suction pipe 44, and the reverse flushing of the filter screen 41 is realized, so that the filter screen 41 is unobstructed.

[0032] Optionally, in the embodiment of the utility model, the distance between the suction pipe 44 and the filter screen 41 is 3-10 mm, and the vertical projection area ratio of the suction pipe 44 to the filter screen 41 is 1:3-2:3. The collection tank 43 is a detachable structure, so as to facilitate the cleaning of the internal waste residue. The pore size of the filter screen 41 is 1-50 μm.

[0033] As shown in Figure 3As shown, in an embodiment of this utility model, the stirring unit includes: a driver 52, a stirring rod 51, and a second pipeline. The stirring rod 51 is connected to the driver 52, and the interior of the stirring rod 51 is provided with a channel 511. The bottom of the stirring rod 51 is provided with multiple air outlets 512, which communicate with the channel 511. The two ends of the second pipeline are respectively connected to the channel 511 and an air source.

[0034] Specifically, in this embodiment, the air blowing device and the stirring device are integrated into one unit. By setting a channel 511 inside the stirring rod 51, gas is discharged through the air outlet 512 when the stirring rod 51 is stirring, thus performing air flotation slag formation. This simplifies the structure of stirring and air discharge, and reduces the manufacturing cost of the lithium-magnesium alloy production device. In this embodiment of the invention, the gas source is filled with inert gas. The number of air outlets 512 can be 5-40, and the diameter of each air outlet 512 is 0.3mm-3mm.

[0035] Furthermore, in an embodiment of this utility model, the stirring unit further includes a stirring paddle 53, which is disposed on the stirring rod 51 to increase the stirring force and make the lithium and magnesium mix evenly. The stirring unit also includes a bearing and a sealing structure 54, which is sleeved on the outside of the stirring rod 51 to improve the airtightness when the stirring rod 51 is connected to the second pipeline, and at the same time facilitate the rotation of the stirring rod 51.

[0036] Optionally, in an embodiment of this utility model, the driver 52 is a motor.

[0037] like Figure 1 As shown in the embodiment of this utility model, the lithium-magnesium alloy production apparatus further includes a lithium metal melting unit, which includes a first hopper 11, a third pipeline 12, and a second control valve 13. The first hopper 11 contains molten lithium metal, and is connected to a crucible 31 via the third pipeline 12. The second control valve 13 is located on the third pipeline 12. When the second control valve 13 is opened, the molten lithium metal in the first hopper 11 can enter the crucible 31, thereby continuously feeding molten lithium metal into the crucible 31.

[0038] Furthermore, a second heating and insulation structure 14 is provided outside the first hopper 11. The second heating and insulation structure 14 is used to heat the lithium metal inside the first hopper 11, making it into molten lithium metal. A second thermocouple 15 is provided on the inner wall of the first hopper 11. The second thermocouple 15 is used to detect the temperature inside the first hopper 11, so as to adjust the heating temperature of the second heating and insulation structure 14 according to the temperature. Optionally, the second heating and insulation structure 14 can be a heating furnace.

[0039] Furthermore, a flow meter is also installed in the third pipeline 12 to detect the flow rate of the lithium metal melt.

[0040] As Figure 1 The lithium-magnesium alloy production device further comprises a second bin 21, a weight sensor 22 and a conveying belt 23. The second bin 21 is internally provided with solid magnesium metal, and the weight sensor 22 is arranged at the lower part of the second bin 21 to detect the weight of the second bin 21 and the magnesium metal, so as to determine the amount of magnesium metal. The two ends of the conveying belt 23 are respectively communicated with the second bin 21 and the crucible 31, so as to convey the magnesium metal into the crucible 31.

[0041] In the embodiment of the present application, by communicating the crucible 31 with the first bin 11 and the second bin 21, the lithium metal melt and the magnesium metal can be timely supplemented into the crucible 31 after the lithium-magnesium alloy melt in the crucible 31 is cast into ingots, so as to realize the continuous production of lithium-magnesium alloy ingots and greatly improve the production efficiency.

[0042] As Figure 1 In the embodiment of the present application, the lithium-magnesium alloy production device further comprises a lifting mechanism 60, the lifting mechanism 60 is connected with the stirring unit, and the lifting mechanism 60 is used to drive the stirring unit to lift. The lifting mechanism can be a pneumatic cylinder or an oil cylinder, and the lifting mechanism is connected with the shell of the driver 52 to drive the driver 52 to lift, and then drive the stirring rod 51 to lift.

[0043] In the embodiment of the present application, the lithium-magnesium alloy production device further comprises a cooling unit, which is used to cool the casting mold 70 after the lithium-magnesium alloy melt is poured into the casting mold 70. Optionally, in the present embodiment, the cooling unit can be a cooler or a heat exchanger.

[0044] As Figure 1 In the embodiment of the present application, the lithium-magnesium alloy production device further comprises a glove box 100, and the first bin 11, the second bin 21, the crucible 31, the stirring unit, the lifting mechanism, the casting mold 70 and the cooling unit are all arranged in the glove box 100. The glove box 100 is filled with inert gas. The casting mold 70 can move in the glove box 100 to leave after casting is completed, so that a new casting mold 70 can be supplemented to perform casting.

[0045] Further, the lithium-magnesium alloy production device further comprises a controller 80, the controller 80 and the gas source are arranged outside the glove box 100, and the controller 80 is electrically connected with the first thermocouple 35, the second thermocouple 15, the first heating and heat preservation structure 36, the second heating and heat preservation structure 14, the lifting mechanism 60, the driver 52, the first control valve 33 and the second control valve 13.

[0046] The first thermocouple 35 sends the detected heating temperature in the crucible 31 to the controller 80, and the controller 80 controls the heating temperature of the first heating insulation structure 36 according to the temperature; the second thermocouple 15 sends the detected heating temperature in the first bin 11 to the controller 80, and the controller 80 controls the heating temperature of the second heating insulation structure 14 according to the temperature. Meanwhile, the controller 80 is also used for controlling the lifting mechanism 60 to lift, controlling the driver 52 to rotate, and controlling the first control valve 33 and the second control valve 13 to open or close.

[0047] The lithium-magnesium alloy production device provided by the embodiment of the utility model, through setting first bin and second heating insulation structure, reduce the heating time of lithium metal, through setting turbulence rib in the crucible, improve the mixing efficiency and uniformity of lithium-magnesium alloy, through integrating blowing slag function at the bottom of stirring rod, optimize the product quality, through setting pressure sensor and straw, reduce the maintenance cost and failure rate of filter screen, realize the significant improvement of production efficiency, optimize the product quality, reduce the maintenance cost, improve the stability of production, realize the continuous production of lithium-magnesium alloy, and the produced lithium-magnesium alloy element is evenly distributed, the impurity content is less, the quality quality is high and the performance is stable, and the subsequent deep processing performance is significantly improved.

[0048] The following detailed description of the use method of the lithium-magnesium alloy production device provided by the embodiment of the utility model:

[0049] Step 01: Put the battery-grade metal lithium into the first bin 11, or access the battery-grade high-temperature liquid metal lithium produced by electrolytic distillation through the reserved pipeline, and put the metal magnesium into the second bin 21, wherein the magnesium is magnesium particles, magnesium fragments, magnesium small particles, etc.

[0050] Step 02: The controller 80 controls the second heating insulation structure 14 to heat the metal lithium. The heating temperature is 300 DEG C ~ 360 DEG C (which can be adjusted according to the specific circumstances), and the temperature in the first bin 11 is monitored by the second thermocouple 15.

[0051] Step 03: The controller 80 controls the first heating insulation structure 36 to heat the crucible 31. The heating temperature is 300 DEG C ~ 420 DEG C (which can be adjusted according to the specific circumstances), and the temperature in the crucible 31 is monitored by the first thermocouple 35.

[0052] Step 04: The controller 80 controls the second control valve 13 to open, and sends the set quality of high-temperature liquid metal lithium into the crucible 31, and the controller 80 controls the lifting mechanism 60 to move, and drives the stirring rod 51 to descend to the working height (1-3cm away from the bottom of the crucible 31). The controller 80 controls the driver 52 to run, and the driver 52 drives the stirring rod 51 to open the stirring, and at the same time, the metal magnesium with the matching content is put into the crucible 31 through the second bin 21.

[0053] Step 05: the controller 80 controls the driver 52 to drive the stirring paddle 53 to stir the alloy melt efficiently, and the stirring time is 5-10 min. 3 min before the end of stirring, the controller 80 controls the gas source to open, and the gas outlet hole 512 blows gas to form slag.

[0054] Step 06: after the stirring is finished, the controller 80 controls the first control valve 33 to open, so that the lithium-magnesium alloy melt flows into the casting mold 70 through the filter screen 41, and the lithium-magnesium alloy ingot is obtained after cooling and demolding. Then, the controller 80 controls the first control valve 33 to close, and the controller 80 controls the suction pipe 44 to blow gas to the cavity between the first control valve 33 and the filter screen 41, so as to check whether the filter screen 41 is blocked. After the filter screen 41 is blocked, the cavity is vacuumized, so that the cavity becomes negative pressure, so as to use reverse flushing to suck the lithium-magnesium alloy residues on the filter screen 41 clean.

[0055] Steps 04-06 are repeated to realize continuous production of lithium-magnesium alloy ingots.

[0056] Finally, it should be noted that: the above examples are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing examples, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing examples, or make equivalent replacement for part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A lithium-magnesium alloy production apparatus, characterized in that, The application relates to a lithium-magnesium alloy smelting device, which comprises the following parts: a heating crucible for heating and melting lithium-magnesium alloy, the lower part of the heating crucible being provided with a casting pipe; a first control valve arranged in the casting pipe; a filter screen arranged in the casting pipe and below the first control valve, the filter screen and the first control valve forming a cavity therebetween; a stirring unit, part of the stirring unit being arranged in the heating crucible, the stirring unit being used for stirring the lithium-magnesium alloy melt in the heating crucible, the bottom of the stirring unit being provided with a plurality of air outlets; an air source in communication with the plurality of air outlets; a plurality of turbulence ribs arranged annularly along the inner wall of the heating crucible; a casting mold capable of moving below the casting pipe so that the filtered lithium-magnesium alloy melt flows into the casting mold.

2. The lithium-magnesium alloy production apparatus according to claim 1, characterized by Each of the turbulence ribs is arranged in parallel with the axis of the stirring unit or at an angle to the axis of the stirring unit.

3. The lithium-magnesium alloy production apparatus according to claim 1 or 2, characterized by The surface of the turbulence rib facing the surface of the stirring unit is circularly or roundly connected with the adjacent surface.

4. The lithium-magnesium alloy production apparatus according to claim 1, characterized by The application further comprises: a pressure sensor arranged in the cavity, the pressure sensor being used for detecting the air pressure in the cavity; a first pipeline, one end of the first pipeline being connected with the air source; a collecting box, the other end of the first pipeline being in communication with the collecting box; a suction pipe, two ends of the suction pipe being respectively in communication with the cavity and the collecting box, the suction pipe being used for sucking the blockage on the filter screen into the collecting box by using negative pressure so that the filter screen is unblocked.

5. The lithium-magnesium alloy production apparatus according to claim 1, characterized by The stirring unit comprises: a driver; a stirring rod connected with the driver, the inside of the stirring rod being provided with a channel, the bottom of the stirring rod being provided with a plurality of air outlets in communication with the channel; a second pipeline, two ends of the second pipeline being respectively in communication with the channel and the air source.

6. The lithium-magnesium alloy production apparatus according to claim 1, characterized by The application further comprises: a first material bin, the first material bin being provided with a lithium metal melt; a third pipeline, two ends of the third pipeline being respectively in communication with the first material bin and the heating crucible; a second control valve arranged in the third pipeline.

7. The lithium-magnesium alloy production apparatus according to claim 1, characterized by The application further comprises: a second material bin provided with magnesium metal; a weight sensor arranged at the lower part of the second material bin, the weight sensor being used for detecting the weight of the second material bin; a conveying belt, two ends of the conveying belt being respectively in communication with the second material bin and the heating crucible, the conveying belt being used for conveying magnesium metal.

8. The lithium-magnesium alloy production apparatus according to claim 1, characterized by The application further comprises a lifting mechanism connected with the stirring unit, the lifting mechanism being used for driving the stirring unit to lift.

9. The lithium-magnesium alloy production apparatus according to claim 1, characterized by The application further comprises a cooling unit used for cooling the casting mold after the lithium-magnesium alloy is poured into the casting mold.

10. The lithium-magnesium alloy production apparatus according to claim 6, characterized by The application further comprises: a plurality of thermocouples respectively arranged at the inner wall of the first material bin and the inner wall of the heating crucible, the thermocouples being used for detecting the temperature in the first material bin and the heating crucible; a controller electrically connected with the plurality of thermocouples, the controller being used for controlling the heating temperature of the first material bin and the heating crucible according to the temperature detected by the thermocouples.

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