Device and method for preparing high-quality magnesium chloride through vortex purification and gravity separation

Abstract

The invention discloses a device for preparing high-quality magnesium chloride through vortex purification and gravity separation and a preparation method of the device, and relates to the technical field of metal material preparation, the device comprises a heating furnace body and an auxiliary deslagging assembly, and the auxiliary deslagging assembly comprises a cubic box communicated with the bottom of a reaction container; and a second air outlet end of the electromagnetic three-way valve is connected with a first ceramic composite corrugated sleeve through a pipeline. According to the invention, through a vortex purification-gravity separation combined process, impurities in molten magnesium chloride can be effectively removed, and the prepared high-quality magnesium chloride is low in insoluble substance content, can meet the strict requirement of an electrolytic method for preparing high-purity magnesium metal on an electrolyte, can also be used as a high-quality catalyst raw material, widens the application range of a product, and is suitable for industrial production. The method does not need to use a large amount of expensive raw materials such as organic solvents, reduces the production cost, has remarkable economic benefits, and can flexibly adjust process parameters according to different impurity contents in the raw materials so as to achieve the optimal purification effect.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of metal material preparation, in particular to a device for preparing high-quality magnesium chloride by vortex purification and gravity separation and a preparation method thereof. BACKGROUND

[0002] In the process of manufacturing titanium metal by the Kroll method, magnesium chloride is produced as a byproduct when titanium tetrachloride is reduced to titanium metal by magnesium. This magnesium chloride can be used for molten salt electrolysis to recover magnesium and recycle it.

[0003] However, the magnesium chloride often contains particulate impurities such as magnesium oxide and nitride. These impurities can promote the growth of deposits in the electrolytic cell during molten salt electrolysis, increase the maintenance frequency of the electrolytic cell, and reduce the yield of the finished metal magnesium; they can also reduce the purity of the metal magnesium, especially when high-purity metal magnesium is manufactured, the problem is more prominent. SUMMARY

[0004] In view of the deficiencies of the prior art, the present application provides a device for preparing high-quality magnesium chloride by vortex purification and gravity separation and a preparation method thereof, which solves the problems raised in the background art.

[0005] To achieve the above object, the present application is implemented by the following technical scheme: a device for preparing high-quality magnesium chloride by vortex purification and gravity separation, comprising a heating furnace body and an auxiliary slag discharge assembly, a reaction container is fixed inside the heating furnace body, and a slag discharge pipe is provided at the top side of the reaction container, the auxiliary slag discharge assembly comprises a square box in communication with the bottom of the reaction container, an extraction strip is arranged on one side of the inside of the square box, the extraction strip is connected to the bottom of the slag discharge pipe, the square box penetrates through the heating furnace body, and a double-way air pump is fixed on the surface of the square box, the air outlet end of the double-way air pump is connected with an electromagnetic three-way valve through a pipeline, the first air outlet end of the electromagnetic three-way valve is connected with an air bag box through a pipeline, a lifting door plate is arranged on the upper surface of the air bag in the air bag box, the second air outlet end of the electromagnetic three-way valve is connected with a first ceramic composite corrugated sleeve through a pipeline, a transmission plate is fixed on the side of the first ceramic composite corrugated sleeve away from the electromagnetic three-way valve, and a horizontal partition plate is fixed on the top of the transmission plate.

[0006] Further, the outer opening structure size of the extraction strip is matched with the inner opening structure size of the square box, and the linear side of the extraction strip is located below the arc side of the reaction container.

[0007] Further, the air bag box is fixed on the bottom of the square box, and the linear side of the lifting door plate on the top of the air bag box is located below the arc side of the reaction container and is arranged opposite to the extraction strip.

[0008] Further, the horizontal partition is in sliding connection with the inner wall of the square box, and the outer opening size of the horizontal partition is greater than the inner diameter size of the reaction container.

[0009] Further, a high-purity magnesium chloride discharge pipe, an upper layer floating dregs discharge pipe and an argon gas filling port are sequentially arranged on one side of the top of the reaction container.

[0010] Further, a vortex stirring paddle is arranged in the middle of the top surface of the reaction container between the high-purity magnesium chloride discharge pipe and the upper layer floating dregs discharge pipe, and the bottom heights of the dregs discharge pipe, the high-purity magnesium chloride discharge pipe, the vortex stirring paddle, the upper layer floating dregs discharge pipe and the argon gas filling port are sequentially arranged in a stepped manner.

[0011] Further, the second ceramic composite corrugated sleeve is in communication with the first ceramic composite corrugated sleeve through the electromagnetic valve on the surface of the transmission plate.

[0012] Further, a pushing plate is fixed to the side of the second ceramic composite corrugated sleeve away from the transmission plate, and the pushing plate is in sliding connection with the bottom of the horizontal partition, and an exhaust valve is arranged at the side of the air bag box.

[0013] Further, the outer opening structure size of the pushing plate is matched with the inner opening structure size of the square box, and the central axis of the pushing plate is located on the same horizontal straight line as the central axis of the material extraction strip.

[0014] A preparation method applied to the vortex purification gravity separation device for preparing high-quality magnesium chloride. Step one: the molten magnesium chloride is transferred to the inside of the reaction container through preheating, argon gas is filled through the argon gas filling port, a protective atmosphere is formed by the inert property of the argon gas to isolate air to avoid the generation of new impurities in the purification process, the molten magnesium chloride is made to generate vortex by the rotation of the vortex stirring paddle to make the impurities gather, and after the stirring is completed, the impurities are deposited, at this time, the dregs sink into the inside of the square box, the floating dregs float on the liquid level surface, and the middle layer is high-quality magnesium chloride; Step two: the high-purity magnesium chloride discharge pipe and the upper layer floating dregs discharge pipe can be lifted at the bottom of the reaction container through the electric push rod, and the laser particle size sensor is used to detect the insoluble content at different heights in the reaction container in real time, the bottom of the high-purity magnesium chloride discharge pipe is controlled to be lifted based on the height of the magnesium chloride in the lowest impurity layer to extract the magnesium chloride in the layer, and the height of the bottom of the upper layer floating dregs discharge pipe is controlled based on the height of the liquid level surface to extract and discharge the floating dregs on the liquid level surface; Step three: before the molten magnesium chloride is transferred into the reaction container, the first air outlet of the electromagnetic three-way valve is opened, and the air pump is used to inject air into the air bag in the air bag box to make it expand and lift the lifting door plate, and then the first air outlet is closed to keep the lifting door plate at the same height, so that the lifting door plate separates the inner part of the box into two spaces, and the precipitated sediment is located between the extraction strip and the lifting door plate; When the sediment needs to be extracted, the second air outlet is opened, and the air pump is used to inject air into the first ceramic composite corrugated sleeve to make it expand and stretch, thereby pushing the transmission plate to make the horizontal partition plate slowly translate to separate the internal space of the reaction container and the box, at this time the precipitated layer is located in the box, and the sediment discharge pipe extracts the sediment without affecting other operations in the internal space of the reaction container; Step four: after the horizontal partition plate is translated, the pushing plate is located on one side of the lifting door plate, at this time the air exhaust valve at the side of the air bag box is opened to make the gas in the air bag exhaust and make the lifting door plate descend, and then the electromagnetic valve on the surface of the transmission plate is opened and the air pump continues to inject air into the first ceramic composite corrugated sleeve, so that the excess gas in the first ceramic composite corrugated sleeve enters the second ceramic composite corrugated sleeve, and the second ceramic composite corrugated sleeve expands to push the pushing plate to translate, thereby pushing the remaining sediment close to the extraction strip to be extracted and discharged through the sediment discharge pipe.

[0015] The present application provides a vortex purification gravity separation device for preparing high-quality magnesium chloride and a preparation method thereof, which has the following beneficial effects: 1. The vortex purification gravity separation device for preparing high-quality magnesium chloride and the preparation method thereof can effectively remove impurities in molten magnesium chloride through the combined process of vortex purification and gravity separation, the prepared high-quality magnesium chloride has low insoluble content, can meet the strict requirements of electrolytic preparation of high-purity magnesium on electrolyte, can be used as a high-quality catalyst raw material, widens the application range of the product, does not need to use a large amount of organic solvents and other expensive raw materials, reduces the production cost, has significant economic benefits, can flexibly adjust the stirring speed, stirring time, gravity separation temperature and time and other process parameters according to the different impurity contents in the raw materials to achieve the best purification effect, and improves the adaptability of the process to different raw materials.

[0016] 2. The device and method for preparing high-quality magnesium chloride by vortex purification and gravity separation, when extracting the bottom sediment, a bidirectional air pump is used to inject air into the first ceramic composite corrugated sleeve to push the horizontal partition plate to slowly translate, thereby separating the internal space of the reaction container and the square box, so that the bottom sediment is isolated into the internal space of the square box. At this time, the suction pump generates negative pressure on the side of the extraction strip, so that the sediment can be extracted and discharged along the sediment discharge pipe. This extraction process does not affect other extraction operations in the internal space of the reaction container, avoiding the problem that the bottom sediment and high-quality magnesium chloride are in the same space although they are layered, which leads to the problem that when extracting each layer of material, the extraction power control precision is insufficient, causing other layers of material to be extracted. It also solves the problem of low efficiency caused by low power extraction to prevent the extraction of other layers of material.

[0017] 3. The device and method for preparing high-quality magnesium chloride by vortex purification and gravity separation, when extracting the bottom sediment, as the lifting door plate descends and the electromagnetic valve on the surface of the transmission plate opens, excess gas enters the second ceramic composite corrugated sleeve to make the push plate translate, and the push plate gradually approaches the extraction strip during translation, and pushes the remaining sediment close to the extraction strip for extraction, thereby solving the problem of limited extraction range caused by sediment residue and fixed extraction strip position. At the same time, the push plate and the horizontal partition plate translate and approach the extraction strip in sequence, so that the horizontal partition plate can first stably divide the sediment layer and the high-quality magnesium chloride layer, avoiding the problem that the push plate moves together and pushes the bottom sediment to surge. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 The figure is a schematic diagram of the appearance of the invention; Figure 2 The figure is a schematic diagram of the internal structure of the reaction container of the invention; Figure 3 The figure is a schematic diagram of the internal structure of the square box of the invention; Figure 4 The figure is a schematic diagram of the structure of the horizontal partition plate of the invention; Figure 5 The figure is a schematic diagram of the bottom structure of the square box of the invention; Figure 6 The figure is a schematic diagram of the structure of the first ceramic composite corrugated sleeve of the invention.

[0019] In the figure: 1, heating furnace body; 2, reaction container; 3, sediment discharge pipe; 4, auxiliary sediment discharge assembly; 401, square box; 402, extraction strip; 403, bidirectional air pump; 404, electromagnetic three-way valve; 405, air bag box; 406, lifting door plate; 407, first ceramic composite corrugated sleeve; 408, transmission plate; 409, horizontal partition plate; 410, second ceramic composite corrugated sleeve; 411, push plate; 5, high-purity magnesium chloride discharge pipe; 6, upper layer floating sediment discharge pipe; 7, argon gas inlet; 8, vortex stirring paddle. DETAILED DESCRIPTION

[0020] The embodiments of the present application will be further described in detail with reference to the drawings and examples. The following examples are used to illustrate the present application, but cannot be used to limit the scope of the present application.

[0021] As shown in the drawings, Figures 1-6 The present application provides a technical solution: a device for preparing high-quality magnesium chloride by vortex purification gravity separation, comprising a heating furnace body 1 and an auxiliary slag discharge assembly 4. A reaction container 2 is fixed inside the heating furnace body 1, and a sediment discharge pipe 3 is provided at the top side of the reaction container 2. The auxiliary slag discharge assembly 4 comprises a square box 401 in communication with the bottom of the reaction container 2, and an extraction strip 402 is provided on one side of the inside of the square box 401. The extraction strip 402 is connected to the bottom of the sediment discharge pipe 3. The outer end of the square box 401 penetrates the heating furnace body 1, and a double-way air pump 403 is fixed on the surface of the square box 401. The air outlet end of the double-way air pump 403 is connected to an electromagnetic three-way valve 404 through a pipeline. The first air outlet end of the electromagnetic three-way valve 404 is connected to an air bag box 405 through a pipeline. A lifting door plate 406 is provided on the upper surface of the air bag in the air bag box 405. The second air outlet end of the electromagnetic three-way valve 404 is connected to a first ceramic composite corrugated sleeve 407 through a pipeline. A transmission plate 408 is fixed on one side of the first ceramic composite corrugated sleeve 407 away from the electromagnetic three-way valve 404. A horizontal partition plate 409 is fixed on the top of the transmission plate 408. The outer opening structure size of the extraction strip 402 is matched with the inner opening structure size of the square box 401. The linear side of the extraction strip 402 is located below the arc side of the reaction container 2. The air bag box 405 is fixed on the bottom of the square box 401. The linear side of the lifting door plate 406 on the top of the air bag box 405 is located below the arc side of the reaction container 2 and is arranged opposite to the extraction strip 402. The horizontal partition plate 409 is slidingly connected with the inner wall of the square box 401. The outer opening size of the horizontal partition plate 409 is larger than the inner diameter size of the reaction container 2. A high-purity magnesium chloride discharge pipe 5, an upper layer floating slag discharge pipe 6 and an argon gas charging port 7 are sequentially arranged on one side of the top of the reaction container 2. A vortex stirring paddle 8 is provided in the top surface of the reaction container 2 between the high-purity magnesium chloride discharge pipe 5 and the upper layer floating slag discharge pipe 6. The bottom heights of the sediment discharge pipe 3, the high-purity magnesium chloride discharge pipe 5, the vortex stirring paddle 8, the upper layer floating slag discharge pipe 6 and the argon gas charging port 7 are sequentially arranged in a stepped manner. The specific operation is as follows. The molten magnesium chloride is transferred to the inside of the reaction container 2 after preheating, and argon gas is filled through the argon gas charging port 7. The inert property of the argon gas forms a protective atmosphere to isolate air to avoid the generation of new impurities in the purification process. The rotation of the vortex stirring paddle 8 causes the molten magnesium chloride to generate a vortex to make the impurities gather. After the stirring is completed, the impurities are deposited. At this time, the sediment sinks into the inside of the square box 401, the floating slag floats on the liquid level surface, and the middle layer is high-quality magnesium chloride. The high-purity magnesium chloride discharge pipe 5 and the upper layer floating sludge discharge pipe 6 can be lifted up and down at the bottom inside the reaction container 2 through an electric push rod, and the laser particle size sensor is used to detect the insoluble content at different heights inside the reaction container 2 in real time, and the bottom of the high-purity magnesium chloride discharge pipe 5 is lifted up and down based on the height of the lowest impurity layer to extract the magnesium chloride in the layer, and the height of the bottom of the upper layer floating sludge discharge pipe 6 is controlled based on the height of the liquid level surface to extract and discharge the floating sludge on the liquid level surface; Embodiments

[0022] In the production line of preparing titanium sponge by magnesium hot reduction of titanium tetrachloride, the molten magnesium chloride with a temperature of about 750 DEG C is transferred to the reaction container 2 through the ladle preheated to 600 DEG C. The vortex stirring paddle 8 made of high-purity graphite is started to stir at a stirring rate of 100 r / min for 10 min to make the molten magnesium chloride generate vortex to promote the aggregation of impurities. After stirring, the temperature in the reaction container 2 is maintained at 720 DEG C by the heating furnace body 1 to carry out gravity separation for 1 h. During the period, the insoluble content in the magnesium chloride is detected every 15 min or the laser particle size sensor is directly used to detect the insoluble content in each layer in real time. When the insoluble content is stable and meets the requirements, the upper layer high-quality magnesium chloride is extracted through the high-purity magnesium chloride discharge pipe 5 as the electrolyte for preparing magnesium metal by electrolysis; Based on the above description, the present application can effectively remove the impurities in the molten magnesium chloride by the combined process of vortex purification-gravity separation, the high-quality magnesium chloride prepared has low insoluble content, can meet the strict requirements of electrolysis for preparing high-purity magnesium metal on the electrolyte, and can also be used as high-quality catalyst raw material to widen the application range of the product. The production cost is reduced without using a large amount of expensive raw materials such as organic solvents, and the process has remarkable economic benefits. The stirring rate, stirring time, gravity separation temperature and time and other process parameters can be flexibly adjusted according to the different impurity contents in the raw materials to achieve the best purification effect and improve the adaptability of the process to different raw materials. Before the molten magnesium chloride is transferred into the reaction container 2, the first air outlet end of the electromagnetic three-way valve 404 is opened, air is injected into the air bag in the air bag box 405 through the bidirectional air pump 403 to make the air bag inflated to lift up the lifting door plate 406, and then the first air outlet end is closed to keep the height of the lifting door plate 406 unchanged after being lifted up, so that the lifting door plate 406 divides the space in the square box 401 into two spaces, and the precipitated sediment is located between the drawing strip 402 and the lifting door plate 406. When the sediment needs to be extracted, the second air outlet is opened, and the bidirectional air pump 403 injects air into the first ceramic composite corrugated sleeve 407 to make it expand, thereby pushing the transmission plate 408 to make the horizontal partition plate 409 slowly translate to separate the internal space of the reaction container 2 and the cuboid box 401, at this time, the sediment layer is located inside the cuboid box 401, and the sediment discharge pipe 3 extracts the sediment without affecting other operations in the internal space of the reaction container 2; The sediment discharge pipe 3, the high-purity magnesium chloride discharge pipe 5, and the upper layer floating slag discharge pipe 6 are each independently provided with a suction pump to realize extraction of substances in each layer, and the vortex stirring paddle 8 is driven by a driving motor; The air bag box 405 is made of high-temperature-resistant and heat-insulating materials such as ceramic fiber, refractory brick, and high-aluminum heat-insulating cotton, and heat transfer is blocked through multi-layer composite design, thereby realizing effective heat insulation at a high temperature above 700 DEG C to avoid excessive heating of the air bag. The first ceramic composite corrugated sleeve 407 and the second ceramic composite corrugated sleeve 410 described below are made of ceramic fiber composite materials and can be used for long-term operation at a high temperature above 700 DEG C; Based on the above description, when the bottom layer sediment is extracted, the bidirectional air pump 403 injects air into the first ceramic composite corrugated sleeve 407 to push the horizontal partition plate 409 to slowly translate to separate the internal space of the reaction container 2 and the cuboid box 401, so that the bottom layer sediment is separated to the inside of the cuboid box 401, at this time, the suction pump generates negative pressure on the side of the extraction strip 402 to extract the sediment and discharge it along the sediment discharge pipe 3. During the extraction process, other extraction operations in the reaction container 2 are not affected, avoiding the problem that the bottom layer sediment and high-quality magnesium chloride are in the same space although they are layered, which leads to the problem that when the substances in each layer are extracted, the extraction power control precision is insufficient, and substances in other layers are easily extracted. It also solves the problem of low power extraction to prevent the extraction of substances in other layers, which leads to poor efficiency.

[0023] As shown in Figures 1-6 The side of the transmission plate 408 away from the first ceramic composite corrugated sleeve 407 is provided with a second ceramic composite corrugated sleeve 410, the second ceramic composite corrugated sleeve 410 is connected with the first ceramic composite corrugated sleeve 407 through an electromagnetic valve on the surface of the transmission plate 408, the side of the second ceramic composite corrugated sleeve 410 away from the transmission plate 408 is fixed with a pushing plate 411, the pushing plate 411 is slidably connected with the bottom of the horizontal partition plate 409, the side of the air bag box 405 is provided with an exhaust valve, the outer opening structure size of the pushing plate 411 is matched with the inner opening structure size of the cuboid box 401, and the central axis of the pushing plate 411 and the central axis of the extraction strip 402 are located on the same horizontal straight line; Specific operation as follows, after the horizontal partition 409 translation, at this time the air bag box 405 side exhaust valve opens so that the gas inside the air bag is discharged to make the lift door plate 406 drop, at this time because the push material plate 411 has been located in the lift door plate 406 side, thus prevent liquid overflow, and then the surface of the transmission plate 408 solenoid valve opens and the two-way air pump 403 continues to inject gas into the first ceramic composite corrugated sleeve 407 inside, so that the first ceramic composite corrugated sleeve 407 inside the excess gas into the second ceramic composite corrugated sleeve 410, the second ceramic composite corrugated sleeve 410 thus expands to push the push material plate 411 translation, thus push the remaining sludge close to the extraction strip 402 to be extracted and through the sludge discharge pipe 3 discharge; Based on the above description, when extracting the bottom layer of sludge, the lift door plate 406 drops and the surface of the transmission plate 408 solenoid valve opens, so that the excess gas enters the second ceramic composite corrugated sleeve 410 to make the push material plate 411 translate, the push material plate 411 gradually approaches the extraction strip 402 during translation, and pushes the remaining sludge close to the extraction strip 402 to be extracted, thereby solving the problem of residual sludge and fixed position of the extraction strip 402 with limited extraction range. At the same time, the push material plate 411 and the horizontal partition 409 translate close to the extraction strip 402 in turn, so that the horizontal partition 409 can first stably divide the sludge layer and the high-quality magnesium chloride layer, avoiding the push material plate 411 moving together to push the bottom layer of sludge to surge.

[0024] A preparation method applied to the above-mentioned device for preparing high-quality magnesium chloride by vortex purification and gravity separation, the preparation method comprising the following steps: Step one: transfer the molten magnesium chloride to the inside of the reaction container 2 through preheating, and fill in argon through the argon filling port 7, form a protective atmosphere by using the inert properties of argon to isolate air to avoid generating new impurities during purification, and make the molten magnesium chloride generate vortex by rotating the vortex stirring paddle 8 to make the impurities aggregate, and then deposit after stirring, at this time the sludge sinks to the inside of the square box 401, the dregs float on the liquid level surface, and the middle layer is high-quality magnesium chloride; Step two: the high-purity magnesium chloride discharge pipe 5 and the upper layer of the dregs discharge pipe 6 can make the bottom inside the reaction container 2 rise and fall through the electric push rod, and cooperate with the laser particle size sensor to detect the insoluble content at different heights inside the reaction container 2 in real time, and control the bottom of the high-purity magnesium chloride discharge pipe 5 to rise and fall based on the height of the lowest impurity layer to extract the magnesium chloride in this layer, and similarly control the height of the bottom of the upper layer of the dregs discharge pipe 6 based on the height of the liquid level surface to extract and discharge the dregs on the liquid level surface; Step three: before the molten magnesium chloride is transferred into the reaction container 2, the first air outlet of the electromagnetic three-way valve 404 is opened, and the air pump 403 is used to inject air into the air bag in the air bag box 405 to make it swell and lift the lifting door plate 406, and then the first air outlet is closed to keep the lifting door plate 406 at the same height, so that the lifting door plate 406 separates the internal space of the square box 401 into two spaces, and the precipitated sediment is located between the drawing strip 402 and the lifting door plate 406; When the sediment needs to be drawn out, the second air outlet is opened, and the air pump 403 is used to inject air into the first ceramic composite corrugated sleeve 407 to make it swell and stretch, so as to push the transmission plate 408 to make the horizontal partition plate 409 slowly translate to separate the internal space of the reaction container 2 and the square box 401, at this time, the precipitated layer is located in the internal space of the square box 401, and at this time, the sediment discharge pipe 3 draws out the sediment without affecting other operations in the internal space of the reaction container 2; Step four: after the horizontal partition plate 409 is translated, the pushing plate 411 is located on one side of the lifting door plate 406, at this time, the air exhaust valve on the side of the air bag box 405 is opened to make the gas in the air bag exhaust to make the lifting door plate 406 descend, and then the electromagnetic valve on the surface of the transmission plate 408 is opened, and the air pump 403 continues to inject air into the first ceramic composite corrugated sleeve 407, so that the excess gas in the first ceramic composite corrugated sleeve 407 enters the second ceramic composite corrugated sleeve 410, and the second ceramic composite corrugated sleeve 410 is thus expanded to push the pushing plate 411 to translate, so as to push the remaining sediment close to the drawing strip 402 to be drawn out by the drawing strip 402 and discharged through the sediment discharge pipe 3.

[0025] Embodiments of the present application are given for the purpose of illustration and description, and are not intended to be exhaustive or to limit the application to the disclosed form. Many modifications and variations will be apparent to those of ordinary skill in the art. Embodiments are chosen and described in order to best explain the principles of the application and its practical application, and to enable others skilled in the art to understand the application for various embodiments with various modifications as are suited to the particular use contemplated.

Claims

1. A device for producing high-quality magnesium chloride by vortex purification gravity separation, comprising a heating furnace body (1) and an auxiliary slag discharge assembly (4), characterized in that: The inside of the heating furnace body (1) is fixed with a reaction container (2), and a sediment discharge pipe (3) is arranged at the top side of the reaction container (2); the auxiliary sediment discharge assembly (4) comprises a square box (401) in communication with the bottom of the reaction container (2), and an extraction strip (402) is arranged at one side of the inside of the square box (401); the extraction strip (402) is connected to the bottom of the sediment discharge pipe (3); the outer end of the square box (401) penetrates the heating furnace body (1), and a two-way air pump (403) is fixed to the surface of the square box (401); the air outlet end of the two-way air pump (403) is connected with an electromagnetic three-way valve (404) through a pipeline; the first air outlet end of the electromagnetic three-way valve (404) is connected with an air bag box (405) through a pipeline; a lifting door plate (406) is arranged on the upper surface of an air bag in the air bag box (405); the second air outlet end of the electromagnetic three-way valve (404) is connected with a first ceramic composite corrugated sleeve (407) through a pipeline; a transmission plate (408) is fixed to the side of the first ceramic composite corrugated sleeve (407) away from the electromagnetic three-way valve (404); and a horizontal partition plate (409) is fixed to the top of the transmission plate (408).

2. A device for producing high quality magnesium chloride by vortex purification gravity separation according to claim 1, characterized in that: The outer opening structure size of the extraction strip (402) is matched with the inner opening structure size of the square box (401), and the linear side of the extraction strip (402) is located below the arc side of the reaction container (2).

3. The device for producing high-quality magnesium chloride by vortex decontamination gravity separation according to claim 1, characterized in that: The air bag box (405) is fixed to the bottom of the square box (401), and the lifting door plate (406) on the top of the air bag box (405) is located below the arc side of the reaction container (2) and is arranged opposite to the extraction strip (402).

4. The device for producing high-quality magnesium chloride by vortex decontamination gravitational separation according to claim 1, characterized in that: The horizontal partition plate (409) is in sliding connection with the inner wall of the square box (401), and the outer opening size of the horizontal partition plate (409) is greater than the inner diameter size of the reaction container (2).

5. A device for producing high quality magnesium chloride by vortex purification gravity separation according to claim 1, characterized in that: A high-purity magnesium chloride discharge pipe (5), an upper layer floating slag discharge pipe (6) and an argon gas charging port (7) are sequentially arranged at one side of the top of the reaction container (2) and on the side of the sediment discharge pipe (3).

6. A device for producing high quality magnesium chloride by vortex purification gravity separation according to claim 5, characterized in that: A vortex stirring paddle (8) is arranged in the middle of the top surface of the reaction container (2) between the high-purity magnesium chloride discharge pipe (5) and the upper layer floating slag discharge pipe (6), and the bottom heights of the sediment discharge pipe (3), the high-purity magnesium chloride discharge pipe (5), the vortex stirring paddle (8), the upper layer floating slag discharge pipe (6) and the argon gas charging port (7) are sequentially arranged in a stepped manner.

7. A device for producing high quality magnesium chloride by vortex purification gravity separation according to claim 1, characterized in that: A second ceramic composite corrugated sleeve (410) is arranged on the side of the transmission plate (408) away from the first ceramic composite corrugated sleeve (407), and the second ceramic composite corrugated sleeve (410) is in communication with the first ceramic composite corrugated sleeve (407) through an electromagnetic valve on the surface of the transmission plate (408).

8. A device for producing high quality magnesium chloride by vortex purification gravity separation according to claim 7, characterized in that: A pushing plate (411) is fixed to the side of the second ceramic composite corrugated sleeve (410) away from the transmission plate (408), and the pushing plate (411) is in sliding connection with the bottom of the horizontal partition plate (409); and an exhaust valve is arranged at the side of the air bag box (405).

9. A device for producing high quality magnesium chloride by vortex purification gravity separation according to claim 8, characterized in that: The outer opening structure size of the pushing plate (411) is matched with the inner opening structure size of the square box (401), and the middle axis of the pushing plate (411) is located on the same horizontal straight line as the middle axis of the drawing strip (402).

10. A method of manufacture for the device for vortex decontamination gravity separation for production of high-quality magnesium chloride according to any one of claims 1-9, characterized by the fact that: The preparation method comprises the following steps: Step one: melt magnesium chloride is transferred to the inside of the reaction container (2) through preheating, argon is filled through the argon filling port (7), a protective atmosphere is formed by using the inert property of argon to isolate air to avoid the generation of new impurities in the purification process, and the melt magnesium chloride is made to generate vortex by the rotation of the vortex stirring paddle (8) to make the impurities gather, and after the stirring is completed, the sediment is deposited, at this time, the sediment sinks to the inside of the square box (401), the dregs float on the liquid level surface, and the middle layer is high-quality magnesium chloride; Step two: the high-purity magnesium chloride discharge pipe (5) and the upper layer of the dregs discharge pipe (6) can be lifted at the bottom of the reaction container (2) through the electric push rod, and the laser particle size sensor is used to detect the insoluble content at different heights in the reaction container (2) in real time, based on the height of the lowest impurity layer, the bottom of the high-purity magnesium chloride discharge pipe (5) is controlled to be lifted to extract the magnesium chloride in the layer, and the height of the bottom of the upper layer of the dregs discharge pipe (6) is controlled based on the height of the liquid level surface to extract and discharge the dregs on the liquid level surface; Step three: before the melt magnesium chloride is transferred to the inside of the reaction container (2), the first air outlet end of the electromagnetic three-way valve (404) is opened, the air is injected into the air bag in the air bag box (405) through the bidirectional air pump (403) to make the air bag inflated to lift the lifting door plate (406), then the first air outlet end is closed to keep the height of the lifting door plate (406) unchanged after being lifted, the lifting door plate (406) divides the inside of the square box (401) into two spaces, and the sediment after deposition is located between the drawing strip (402) and the lifting door plate (406); When the sediment needs to be extracted, the second air outlet end is opened, the air is injected into the first ceramic composite corrugated sleeve (407) through the bidirectional air pump (403) to make it inflated and stretched, so as to push the transmission plate (408) to make the horizontal partition plate (409) slowly translate to separate the internal spaces of the reaction container (2) and the square box (401), at this time, the deposition layer is located in the inside of the square box (401), at this time, the sediment discharge pipe (3) extracts the sediment without affecting other operations in the internal space of the reaction container (2); Step four: after the horizontal partition (409) translation, the push plate (411) is located on one side of the lifting door plate (406), at this time the exhaust valve at the side of the air bag box (405) is opened to make the gas inside the air bag exhaust and make the lifting door plate (406) drop, and then the electromagnetic valve on the surface of the transmission plate (408) is opened, and the double-way air pump (403) continues to inject gas into the first ceramic composite corrugated sleeve (407), so that the excess gas in the first ceramic composite corrugated sleeve (407) enters the second ceramic composite corrugated sleeve (410), and the second ceramic composite corrugated sleeve (410) is thus unfolded to push the push plate (411) to translate, thereby pushing the remaining sludge close to the material extraction strip (402) to be extracted and discharged through the sludge discharge pipe (3).

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