A dust collection device for magnesium powder processing

Abstract

The present invention relates to the technical field of metal powder production and processing, and discloses a dust collection device for magnesium powder processing, which includes a chip cutter and an air curtain machine, a magnesium ingot inlet is provided on the top side of the chip cutter, a magnesium powder collecting separator is provided below the magnesium ingot inlet, an acid liquid waterfall column is provided at the center of the magnesium powder collecting separator, an acid discharge impeller and an exhaust impeller are provided at the bottom for rotation and connection, and a sleeved cylindrical electromagnet is wrapped inside the acid liquid waterfall column. The advantages of the present invention over the prior art are: a magnesium powder collecting separator is provided for suction, and magnesium metal dust is carried into the magnesium powder collecting separator by airflow, and an electromagnet capable of attracting magnesium dust and an impeller for exhausting gas are provided in the magnesium powder collecting separator, so that gas and dust particles can be separated, and hydrochloric acid solution is pumped in from the outside to convert magnesium dust into magnesium chloride solution, and the magnesium chloride solution can be used as a raw material for electrolytic magnesium production again after purification, thereby reducing material waste.

Description

Technical Field

[0001] The invention relates to the technical field of metal powder production and processing, and in particular to a dust collection device for magnesium powder processing. Background Art

[0002] The processing of magnesium powder requires the use of a chip cutter with a knife roller to process the magnesium ingot into magnesium chips, and then crush the magnesium chips to form magnesium powder. The main working part of the chip cutter is the rotating knife roller, which is installed in a shell with two openings. The opening for discharging magnesium chips is set at the bottom to discharge magnesium chips, and the opening for the entrance of the magnesium ingot is set on the side. The magnesium ingot is pushed into the shell by an external hydraulic cylinder to contact the knife roller and be cut. During the cutting process, most of the magnesium chips fall to the discharge opening due to their own gravity, but some of the magnesium chips are thrown out from the entrance of the magnesium ingot due to their small particles. After a long period of processing, metal particles often accumulate at the entrance of the magnesium ingot of the chip cutter, which is easy to form a jam during the process of pushing the magnesium ingot in, resulting in poor feeding and reducing the working efficiency of the device. In addition, magnesium metal is relatively active, and metal magnesium in dust form is flammable and explosive, which can easily form a safety hazard in the processing workshop. Moreover, this part of magnesium metal is easily mixed with other dust particles and is difficult to separate, which ultimately causes a waste of resources. Summary of the invention

[0003] The technical problem to be solved by the present invention is that magnesium metal dust which is difficult to recover is easily generated during the operation of a magnesium ingot chip cutter, resulting in a waste of raw materials and easily forming a dust explosion. A dust collection device for magnesium powder processing is provided.

[0004] In order to solve the above technical problems, the technical solution provided by the present invention is: a dust collection device for magnesium powder processing, which includes a chip cutter and an air curtain machine. A magnesium ingot inlet is provided on the top side of the chip cutter, the air curtain machine is arranged above the magnesium ingot inlet, and a magnesium powder collecting separator is provided below the magnesium ingot inlet. A first air guide hole is provided on the top of the magnesium ingot inlet to communicate with the air curtain machine, and a second air guide hole is provided at the bottom to communicate with the magnesium powder collecting separator.

[0005] The magnesium powder collecting separator is provided with a guide cover at the top thereof, which is connected to the magnesium ingot inlet. An acid liquid waterfall column is provided at the center of the magnesium powder collecting separator. An acid discharge impeller is provided at the bottom thereof in a rotatable connection. A sleeve-shaped electromagnet is wrapped inside the acid liquid waterfall column. An acid liquid baffle cover is fixedly provided on the top of the acid liquid waterfall column. The top of the acid liquid baffle cover is fixedly connected to the guide cover. A concave acid trough is provided at the top of the acid waterfall column, a deflection channel is provided between the bottom of the acid deflector cover and the outer edge of the acid trough, a grille is provided on the top of the outer edge of the acid trough and is fixedly connected to the bottom surface of the acid deflector cover, the deflection channel extends to the outer wall surface of the acid waterfall column, a liquid retaining ring is provided around the outer side of the acid deflector cover, and the liquid retaining ring extends to the outside of the outer wall surface of the acid waterfall column.

[0006] Furthermore, an exhaust impeller is arranged on the top of the acid discharge impeller, a gear ring is arranged on the bottom of the acid discharge impeller, a hollow base is arranged at the bottom of the magnesium powder collecting separator, the gear ring extends to the center of the base, an impeller motor is arranged in the base, a gear is arranged at the output end of the impeller motor to mesh with the gear ring, the bottom of the acid liquid waterfall column extends into the base, and the axis of the acid discharge impeller is arranged in a through hole shape to fit the outer wall of the bottom of the acid liquid waterfall column.

[0007] Furthermore, an acid inlet pipe is arranged at the center of the bottom of the acid tank, the acid inlet pipe passes through the gear ring and extends into the base, the acid inlet pipe passes through the side of the base and extends to the outside and is provided with an acid inlet valve connected to an external acid pump, and an electromagnet controller is arranged in the base and is electrically connected to the cylindrical electromagnet.

[0008] Furthermore, a concave air induction ring is provided at the top of the exhaust impeller, and a gas-liquid separation ring is provided at the junction of the bottom of the exhaust impeller and the acid exhaust impeller.

[0009] Furthermore, a plurality of overflow ports are arranged around the side wall of the magnesium powder collecting separator, the outer side of the gas-liquid separation ring extends to the overflow port, an annular overflow groove is arranged on the outer side of the overflow port, a first overflow chamber is arranged inside the overflow groove and is connected to the overflow port, a second overflow chamber is arranged below the outer side of the first overflow chamber, a downward inclined channel is arranged between the first overflow chamber and the second overflow chamber, an isolation ring that can float up and down is arranged inside the first overflow chamber, a plurality of floats are arranged on the inner side wall of the isolation ring, and an exhaust chamber is arranged at the top of the first overflow chamber.

[0010] Furthermore, the magnesium powder collection separator is provided with an exhaust pipe at the top and an acid discharge pipe at the bottom. The exhaust pipe is provided with an exhaust valve connected to an external argon recovery device. The acid discharge pipe is provided with an acid discharge valve connected to an external magnesium salt solution purification system. A connecting pipe is provided at the top of the overflow tank, and an acid overflow pipe is provided at the bottom of the side. The connecting pipe connects the exhaust pipe with the exhaust chamber, and the acid overflow pipe connects the second overflow chamber with the acid discharge pipe.

[0011] Furthermore, a jet nozzle and a convergent throat are fixedly provided in the acid discharge pipe, and the end opening of the acid overflow pipe extends between the jet nozzle and the convergent throat.

[0012] Furthermore, an air inlet cooperating with the second air guide hole is provided on the top of the air guide cover.

[0013] Furthermore, an exhaust port cooperating with the first air guide hole is provided at the bottom of the air curtain machine, a guide cone is provided at the bottom of the air curtain machine, the exhaust port is connected to the guide cone, an air inlet is provided at the top of the air curtain machine, and an argon valve is provided at the air inlet to connect to an external argon supply system.

[0014] The advantages of the present invention compared with the prior art are:

[0015] A magnesium powder collecting separator is provided for suction, and magnesium metal dust is carried into the magnesium powder collecting separator by air flow.

[0016] The magnesium powder collector separator is equipped with an electromagnet that can attract magnesium dust and an impeller that exhausts gas, which can separate the gas from the dust particles.

[0017] Hydrochloric acid solution is pumped in from the outside to convert magnesium dust into magnesium chloride solution, which can be used again as raw material for electrolytic magnesium production after purification, thereby reducing material waste. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the present invention.

[0019] Figure 2 It is a schematic diagram of the structure of a chip cutter.

[0020] Figure 3 It is a structural schematic diagram of the magnesium ingot inlet.

[0021] Figure 4 It is a structural diagram of the air curtain machine.

[0022] Figure 5 It is a cross-sectional schematic diagram of the internal structure of the air curtain machine.

[0023] Figure 6 It is a schematic structural diagram of the magnesium powder collecting separator of the present invention.

[0024] Figure 7 It is a schematic diagram of the internal structure of the magnesium powder collecting separator of the present invention.

[0025] Figure 8 It is a schematic diagram of the electromagnet structure of the present invention.

[0026] Fig. 9 It is a schematic diagram of the internal structure of the acid liquid waterfall column of the present invention.

[0027] Fig.10 It is a schematic diagram of the explosion structure of the magnesium powder collecting separator of the present invention.

[0028] Fig.11 yes Fig.10 A magnified schematic diagram of the structure at point a.

[0029] Fig.12 It is a schematic cross-sectional structural diagram of the magnesium powder collecting separator of the present invention.

[0030] Fig.13 yes Fig.12 Schematic diagram of the structure at point b.

[0031] Fig.14 It is a schematic diagram of the cross-sectional structure of the acid discharge pipe of the present invention.

[0032] Fig.15 yes Fig.14 Schematic diagram of the structure at c in the figure.

[0033] As shown in the figure: 1. Chip cutting machine; 2. Magnesium ingot inlet; 3. Magnesium ingot; 4. Air curtain machine; 5. Magnesium powder collection separator; 6. First air guide hole; 7. Second air guide hole; 8. Air curtain machine motor; 9. Exhaust port; 10. Air inlet; 11. Argon valve; 12. Air curtain machine impeller; 13. Flow guide cover; 14. Air intake; 15. Base; 16. Acid inlet valve; 17. Impeller motor; 18. Exhaust pipe; 19. Exhaust valve; 20. Acid discharge pipe; 21. Acid discharge valve; 22. Acid waterfall column; 23. Acid deflector; 24. Acid discharge impeller ; 25. Exhaust impeller; 26. Electromagnet; 27. Gear ring; 28. Gear; 29. ​​Acid inlet pipe; 30. Electromagnet controller; 31. Acid tank; 32. Baffle channel; 33. Liquid retaining ring; 34. Grille; 35. Guide cone; 36. Air inlet ring; 37. Gas-liquid separation ring; 38. Overflow groove; 39. First overflow chamber; 40. Second overflow chamber; 41. Exhaust chamber; 42. Isolation ring; 43. Float; 44. Overflow port; 45. Connecting pipe; 46. Acid overflow pipe; 47. Jet nozzle; 48. Convergent throat. DETAILED DESCRIPTION

[0034] The present invention is further described in detail below in conjunction with the accompanying drawings.

[0035] Combined with Figure 1 , Attachment Figure 2 , Attachment Figure 3 , Attachment Figure 4 and attached Figure 6 A dust collection device for magnesium powder processing comprises a chip cutter 1 and an air curtain machine 4. A magnesium ingot inlet 2 is provided on the top side of the chip cutter 1. The air curtain machine 4 is arranged above the magnesium ingot inlet 2. A magnesium powder collecting separator 5 is provided below the magnesium ingot inlet 2. A first air guide hole 6 is provided on the top of the magnesium ingot inlet 2 to communicate with the air curtain machine 4. A second air guide hole 7 is provided on the bottom to communicate with the magnesium powder collecting separator 5. The magnesium ingot 3 enters the chip cutter 1 through the magnesium ingot inlet 2.

[0036] Combined with Figure 6 , Attachment Figure 7 , Attachment Figure 8 and attached Fig. 9The magnesium powder collecting separator 5 is provided with a guide cover 13 on the top, which is connected to the magnesium ingot inlet 2. The guide cover 13 is provided with an air inlet 14 that cooperates with the second air guide hole 7. An acid liquid waterfall column 22 is provided at the center of the magnesium powder collecting separator 5. An acid discharge impeller 24 is provided at the bottom for rotation. The inside of the acid liquid waterfall column 22 wraps a sleeved cylindrical electromagnet 26. An electromagnet controller 30 is provided in the base 15 and is electrically connected to the cylindrical electromagnet 26. An acid liquid deflector 23 is fixedly provided on the top of the acid liquid waterfall column 22. The top of the acid liquid deflector 23 is fixedly connected to the guide cover 13. An acid discharge pipe 20 is provided at the bottom of the magnesium powder collecting separator 5. The acid discharge pipe 20 is provided with an acid discharge valve 21 that is connected to the external magnesium salt solution purification system.

[0037] Acid solution can overflow from the top of the acid waterfall column 22 and flow downward along the outer wall of the acid waterfall column 22. Dilute hydrochloric acid can be selected for this application. Since the acid waterfall column 22 is internally sleeved with an electromagnet 26, the magnetic field formed after the electromagnet 26 is energized can attract paramagnetic substances. Since metallic magnesium has paramagnetism, the dust generated by the chip cutter 1 when it is working enters the magnesium powder collection separator 5, and the metallic magnesium particles therein are attracted by the electromagnet 26 and move toward the outer wall of the acid waterfall column 22. Since the outer wall of the acid waterfall column 22 is covered with an acidic solution, magnesium will be reacted here to form a magnesium chloride solution, which flows downward to the acid discharge impeller 24 and is discharged to the acid discharge pipe 20, and enters the external magnesium salt solution purification system.

[0038] Compared with directly separating magnesium metal from metal dust, the purification of magnesium chloride solution is simpler and the product purity is higher, and the acid solution can also reduce the magnesium oxide on the surface of the metal magnesium dust.

[0039] At present, magnesium chloride solution is often used for electrolytic magnesium production. The magnesium chloride solution obtained by the reaction in the magnesium powder collection separator 5 can be returned to the electrolytic magnesium process as its raw material after purification, thereby reducing the waste of magnesium.

[0040] Combined with Fig.11 A concave acid tank 31 is provided at the top of the acid liquid waterfall column 22, a baffle channel 32 is provided between the bottom of the acid liquid baffle cover 23 and the outer edge of the acid liquid tank 31, a grille 34 is provided at the top of the outer edge of the acid liquid tank 31 and is fixedly connected to the bottom surface of the acid liquid baffle cover 23, the baffle channel 32 extends to the outer wall surface of the acid liquid waterfall column 22, a liquid retaining ring 33 is provided around the outer side of the acid liquid baffle cover 23, the liquid retaining ring 33 extends to the outside of the outer wall surface of the acid liquid waterfall column 22, an acid liquid inlet pipe 29 is provided at the bottom center of the acid liquid tank 31, the acid liquid inlet pipe 29 passes through the gear ring 27 and extends to the base 15, the acid liquid inlet pipe 29 passes through the side of the base 15 and extends to the outside and is provided with an acid liquid inlet valve 16 to communicate with an external acid liquid pump.

[0041] The external acid pump is connected to the acid inlet pipe 29 to pump dilute hydrochloric acid into the acid tank 31. The liquid level in the acid tank 31 continues to rise. When it rises to the outer edge of the acid tank 31, it overflows from the top of the acid deflector 23. The liquid blocking ring 33 can prevent the acid from splashing out too fast. The acid inlet valve 16 adjusts the acid flow rate to make the acid on the outer wall of the acid waterfall column 22 flow in a laminar flow, which can further avoid acid splashing.

[0042] Combined with Fig. 9 and attached Fig.10 An exhaust impeller 25 is arranged at the top of the acid-discharging impeller 24, a gear ring 27 is arranged at the bottom of the acid-discharging impeller 24, a hollow base 15 is arranged at the bottom of the magnesium powder collecting separator 5, the gear ring 27 extends to the center of the base 15, an impeller motor 17 is arranged in the base 15, a gear 28 is arranged at the output end of the impeller motor 17 to mesh with the gear ring 27, the bottom of the acid liquid waterfall column 22 extends into the base 15, the axis of the acid-discharging impeller 24 is arranged in a through hole shape to fit the outer wall of the bottom of the acid liquid waterfall column 22, the connection between the acid-discharging impeller 24 and the acid liquid waterfall column 22 and the connection with the inner wall of the magnesium powder collecting separator 5 are both provided with corresponding acid-resistant seals, an exhaust pipe 18 is arranged at the top of the magnesium powder collecting separator 5, and the exhaust pipe 18 is provided with an exhaust valve 19 to communicate with the external argon recovery equipment.

[0043] While the acid discharge impeller 24 rotates to discharge acid, the exhaust impeller 25 discharges the gas in the magnesium powder collecting separator 5 and reduces the internal pressure, so that the magnesium powder collecting separator 5 continuously draws gas from the magnesium ingot inlet 2. At the same time, the air curtain machine 4 blows towards the magnesium ingot inlet 2, forming a flow field from top to bottom in the magnesium ingot inlet 2. On the one hand, it can prevent external air from entering the magnesium ingot inlet 2, and on the other hand, it can blow the dust in the magnesium ingot inlet 2 into the magnesium powder collecting separator 5.

[0044] Combined with Fig. 9 and attached Fig.10 The top of the exhaust impeller 25 is provided with a concave air inlet ring 36, which is concave and points to the acid liquid waterfall column 22. The intake air flow carrying metal particles is deflected by the air inlet ring 36 and flows toward the outer wall of the acid liquid waterfall column 22, so that the magnesium metal particles are fully in contact with the acid liquid. A gas-liquid separation ring 37 is provided at the connection between the bottom of the exhaust impeller 25 and the acid discharge impeller 24 to prevent the acid liquid level in the device from being too high and contacting the exhaust impeller 25 impeller. The acid liquid discharge flow rate is changed by controlling the opening of the acid discharge valve 21, and then the acid liquid level inside the device is adjusted so that the acid liquid level is slightly lower than the opening of the gas-liquid separation ring 37, forming a liquid seal to prevent gas from entering the acid discharge impeller 24.

[0045] Combined with Fig.12 and attached Fig.13The side wall of the magnesium powder collecting separator 5 is provided with a plurality of overflow ports 44 around a circle, the outer side of the gas-liquid separation ring 37 extends to the overflow port 44, the outer side of the overflow port 44 is sleeved with an annular overflow groove 38, a first overflow chamber 39 is arranged inside the overflow groove 38 and communicates with the overflow port 44, a second overflow chamber 40 is arranged below the outer side of the first overflow chamber 39, a downwardly inclined channel is arranged between the first overflow chamber 39 and the second overflow chamber 40, an isolation ring 42 that can float up and down is sleeved in the first overflow chamber 39, a plurality of floats 43 are arranged on the inner side wall of the isolation ring 42, and an exhaust chamber 41 is arranged at the top of the first overflow chamber 39.

[0046] When the acid liquid level inside the magnesium powder collection separator 5 is too high, the acid liquid flows into the first overflow chamber 39 through the gas-liquid separation ring 37 and the overflow port 44 and is blocked by the isolation ring 42. When the acid liquid in the wall accumulates to a certain height, the buoyancy received by the float 43 is greater than the gravity of the float and the isolation ring 42, the isolation ring 42 is driven to float up by the float 43, and the liquid in the first overflow chamber 39 flows into the second overflow chamber 40.

[0047] Combined with Fig.14 and attached Fig.15 A connecting pipe 45 is provided at the top of the overflow tank 38 , and an acid overflow pipe 46 is provided at the bottom of the side. The connecting pipe 45 connects the exhaust pipe 18 with the exhaust cavity 41 , and the acid overflow pipe 46 connects the second overflow cavity 40 with the acid discharge pipe 20 .

[0048] When the gas enters the first overflow chamber 39 , it can float up by itself into the exhaust chamber 41 , and enter the exhaust pipe 18 through the connecting pipe 45 for discharge.

[0049] Combined with Fig.14 and attached Fig.15 A jet nozzle 47 and a convergent throat 48 are fixedly provided in the acid discharge pipe 20, and the end opening of the acid overflow pipe 46 extends between the jet nozzle 47 and the convergent throat 48. One end of the jet nozzle 47 points to the convergent throat 48, and the inlet end of the jet nozzle 47 is arranged toward the inlet of the acid discharge pipe 20, and the outlet end of the convergent throat 48 is arranged toward the acid discharge valve 21.

[0050] The acid liquid discharged by the acid discharge impeller 24 is ejected through the jet nozzle 47 and drives the fluid around the nozzle into the convergent throat 48 through viscosity and increases speed and reduces pressure. Therefore, the opening at the end of the acid liquid overflow pipe 46 presents a certain degree of negative pressure, which can negatively suck the liquid in the second overflow chamber 40 and guide it to the inside and outside of the acid discharge pipe 20 for discharge.

[0051] The present application realizes overflow prevention of acid liquid in the magnesium powder collecting separator 5 and realizes gas-liquid separation through the above method, which can reduce the amount of acid liquid entering the exhaust impeller 25 and the amount of gas entering the acid exhaust impeller 24.

[0052] Combined with Figure 4 and attached Figure 5 The air curtain machine 4 uses a Roots-type blower, which is provided with a pair of three-blade air curtain machine impellers 12 inside, and an air curtain machine motor 8 is provided outside the air curtain machine 4 for driving. The Roots blower is a common technology and is not further described in this application. An exhaust port 9 is provided at the bottom of the air curtain machine 4 to match the first air guide hole 6. The air curtain machine 4 has a guide cone 35 at the bottom, and the exhaust port 9 is connected to the guide cone 35. An air inlet 10 is provided at the top of the air curtain machine 4. Since the chemical reaction in the magnesium powder collection separator 5 continuously generates hydrogen, in order to ensure the hydrogen in the device No explosion occurs. The air inlet 10 is provided with an argon valve 11 connected to the external argon supply system. The argon gas flow is used as a wind curtain purge. The wind curtain purge can reduce the entry of external air. The argon gas can reduce the oxygen content in the magnesium powder collection separator 5, thereby avoiding hydrogen explosion. In addition, the magnesium chips of the chip cutter 1 are often discharged in the form of negative pressure suction, so that the pressure inside the chip cutter 1 is relatively low. The argon gas purged by the wind curtain machine 4 partially enters the chip cutter 1, so that the oxygen content inside the chip cutter 1 is also reduced, forming argon protection and reducing the oxidation of magnesium chips.

[0053] The present invention and its implementation methods are described above, and such description is not restrictive, and the actual structure is not limited thereto. In short, if a person skilled in the art is inspired by it, and does not deviate from the purpose of the invention, and does not creatively design a structure and implementation method similar to the technical solution, they should all fall within the protection scope of the present invention.

Claims

1. A dust collection device for magnesium powder processing, comprising a chip cutter (1) and an air curtain machine (4), wherein a magnesium ingot inlet (2) is provided on the top side of the chip cutter (1), the air curtain machine (4) is arranged above the magnesium ingot inlet (2), a magnesium powder collecting separator (5) is provided below the magnesium ingot inlet (2), a first air guide hole (6) is provided at the top of the magnesium ingot inlet (2) and is connected to the air curtain machine (4), and a second air guide hole (7) is provided at the bottom and is connected to the magnesium powder collecting separator (5), characterized in that: The magnesium powder collecting separator (5) is provided with a flow guide cover (13) at the top thereof and is connected to the magnesium ingot inlet (2); an acid liquid waterfall column (22) is provided at the center thereof; an acid discharge impeller (24) is rotatably connected to the bottom thereof; a sleeve-shaped electromagnet (26) is wrapped inside the acid liquid waterfall column (22); an acid liquid deflector cover (23) is fixedly provided at the top of the acid liquid waterfall column (22); and the top of the acid liquid deflector cover (23) is fixedly connected to the flow guide cover (13); A concave acid tank (31) is provided at the top of the acid liquid waterfall column (22); a baffle channel (32) is provided between the bottom of the acid liquid baffle cover (23) and the outer edge of the acid liquid tank (31); a grille (34) is provided at the top of the outer edge of the acid liquid tank (31) and is fixedly connected to the bottom surface of the acid liquid baffle cover (23); the baffle channel (32) extends to the outer wall surface of the acid liquid waterfall column (22); a liquid retaining ring (33) is provided around the outer side of the acid liquid baffle cover (23); and the liquid retaining ring (33) extends to the outer side of the outer wall surface of the acid liquid waterfall column (22).

2. A dust collection device for magnesium powder processing according to claim 1, characterized in that: An exhaust impeller (25) is arranged on the top of the acid-discharging impeller (24), a gear ring (27) is arranged on the bottom of the acid-discharging impeller (24), a hollow base (15) is arranged on the bottom of the magnesium powder collecting separator (5), the gear ring (27) extends to the center of the base (15), an impeller motor (17) is arranged in the base (15), a gear (28) is arranged at the output end of the impeller motor (17) and meshes with the gear ring (27), the bottom of the acid liquid waterfall column (22) extends into the base (15), and the axis of the acid-discharging impeller (24) is arranged in a through hole shape to fit the outer wall of the bottom of the acid liquid waterfall column (22).

3. A dust collection device for magnesium powder processing according to claim 2, characterized in that: An acid inlet pipe (29) is arranged at the center of the bottom of the acid tank (31), and the acid inlet pipe (29) passes through the gear ring (27) and extends into the base (15). The acid inlet pipe (29) passes through the side of the base (15) and extends to the outside and is provided with an acid inlet valve (16) and is connected to an external acid pump. An electromagnet controller (30) is arranged in the base (15) and is electrically connected to the cylindrical electromagnet (26).

4. A dust collection device for magnesium powder processing according to claim 2, characterized in that: A concave air induction ring (36) is provided at the top of the exhaust impeller (25), and a gas-liquid separation ring (37) is provided at the bottom of the exhaust impeller (25) where it connects with the acid exhaust impeller (24).

5. A dust collection device for magnesium powder processing according to claim 4, characterized in that: The magnesium powder collecting separator (5) has a plurality of overflow ports (44) arranged around the side wall thereof, the gas-liquid separation ring (37) extends outside the overflow port (44), an annular overflow groove (38) is sleeved outside the overflow port (44), a first overflow chamber (39) is arranged inside the overflow groove (38) and is communicated with the overflow port (44), a second overflow chamber (40) is arranged below the outside of the first overflow chamber (39), a downwardly inclined channel is arranged between the first overflow chamber (39) and the second overflow chamber (40), an isolation ring (42) that can float up and down is sleeved inside the first overflow chamber (39), a plurality of floats (43) are arranged on the inner side wall of the isolation ring (42), and an exhaust chamber (41) is arranged at the top of the first overflow chamber (39) and is communicated with.

6. A dust collection device for magnesium powder processing according to claim 5, characterized in that: The magnesium powder collecting separator (5) is provided with an exhaust pipe (18) at the top and an acid discharge pipe (20) at the bottom. The exhaust pipe (18) is provided with an exhaust valve (19) and is connected to an external argon recovery device. The acid discharge pipe (20) is provided with an acid discharge valve (21) and is connected to an external magnesium salt solution purification system. A connecting pipe (45) is provided at the top of the overflow tank (38), and an acid overflow pipe (46) is provided at the bottom of the side. The connecting pipe (45) connects the exhaust pipe (18) with the exhaust chamber (41), and the acid overflow pipe (46) connects the second overflow chamber (40) with the acid discharge pipe (20).

7. A dust collection device for magnesium powder processing according to claim 6, characterized in that: A jet nozzle (47) and a convergent throat (48) are fixedly provided in the acid discharge pipe (20), and the end opening of the acid overflow pipe (46) extends between the jet nozzle (47) and the convergent throat (48).

8. The dust collection device for magnesium powder processing according to claim 1, characterized in that: The top of the air guide cover (13) is provided with an air intake port (14) that matches the second air guide hole (7).

9. A dust collection device for magnesium powder processing according to claim 1, characterized in that: An exhaust port (9) cooperating with the first air guide hole (6) is provided at the bottom of the air curtain machine (4), a guide cone (35) is provided at the bottom of the air curtain machine (4), the exhaust port (9) and the guide cone (35) are connected, an air inlet (10) is provided at the top of the air curtain machine (4), and an argon valve (11) is provided at the air inlet (10) and is connected to an external argon supply system.

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