A slag removal device and slag removal method for vertical tank smelting of magnesium metal

Abstract

The invention discloses a slag removal device and a slag removal method for a vertical tank smelting magnesium metal. The slag removal device comprises a vertical tank, a slag discharge port is arranged at the bottom of the vertical tank, a feed port is arranged at the lower end of the side wall of the vertical tank, a central tube is arranged at the lower side of the vertical tank, a slag discharge port connected to the slag discharge port is uniformly distributed circumferentially at the lower end of the central tube, a vertically sliding closed tube is arranged in the central tube, a vertically sliding heat insulation block is arranged at the upper end of the closed tube, the heat insulation block and the closed tube are connected by a first rope, a vertically sliding annular slag scraper plate is arranged between the central tube and the vertical tank, a rotating gear is arranged at the upper end of the central tube, a chain is arranged on the annular slag scraper plate, the chain passes through the gear and is connected to the heat insulation block, and the weight of the annular slag scraper plate is greater than the heat insulation block, and less than the total weight of the heat insulation block and the closed tube. The invention removes slag while discharging slag through the cooperation of the closed tube, the heat insulation block and the annular slag scraper plate, avoids the residue on the vertical tank and the central tube, and improves the efficiency of slag removal.

Description

Technical Field

[0001] The invention relates to the technical field of magnesium metal vertical tank smelting, and in particular to a magnesium metal vertical tank smelting slag removal device and a slag removal method. Background Art

[0002] In the prior art, a feed port is provided at the upper end of a vertical tank for smelting metal magnesium, a slag discharge port is provided at the lower end, a central tube is provided at the lower side of the vertical tank, the lower end of the central tube is used to seal the slag discharge port, and a magnesium crystallizer is provided in the vertical tank above the central tube. After the smelting reaction is completed, it is necessary to stop vacuuming, open the upper cover at the feed port, take out the magnesium crystallizer, and then lift the central tube to open the slag discharge port so that the slag is discharged from the slag discharge port under the action of gravity. However, there will be residues left on the inner wall of the vertical tank and the outer wall of the central tube. If they are not removed, it is easy to reduce the effective volume of the vertical tank, and even block the magnesium vapor through hole of the central tube, affecting the escape of magnesium vapor.

[0003] After the smelting reaction, the temperature in the vertical tank is high, and manual slag removal is inefficient, time-consuming, and dangerous. As for mechanical slag removal, because there is a central tube in the vertical tank, the existing mechanical slag removal equipment is not easy to enter between the vertical tank and the central tube, and the location where the residue is left is not easy to clean. Moreover, after the waste slag is discharged, it takes time to remove the residue, which will affect production efficiency and increase production costs. In addition, there are also slag removal mechanisms in the vertical tank, but it is easy to occupy the original effective volume of the vertical tank and reduce the amount of magnesium reduction raw material balls added. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a slag removal device and a slag removal method for a vertical tank smelting of magnesium metal. Through the cooperation of a closed tube, an insulating block and an annular slag scraper, slag removal is performed while slag is discharged, thereby avoiding residual slag on the vertical tank and the center tube, and improving the efficiency of slag discharge and removal.

[0005] To achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a magnesium metal vertical tank smelting and slag removal device, comprising a vertical tank, a slag discharge port is arranged at the bottom of the vertical tank, the slag discharge port is connected to the waste slag tank, a feed port is arranged at the lower end of the side wall of the vertical tank, a central tube is arranged on the lower side of the vertical tank, the upper and lower ends of the central tube are both open ends, and the lower end of the central tube is circumferentially evenly provided with slag outlets communicating with the slag discharge port, a vertically sliding closing tube is arranged in the central tube, the closing tube is used for opening and closing the slag outlet and the slag discharge port, a vertically sliding heat insulation block is arranged at the upper end of the closing tube, the heat insulation block and the closing tube are connected by a first rope, a vertically sliding annular scraper plate is arranged between the central tube and the vertical tank, a rotating gear is arranged at the upper end of the central tube, a chain is arranged on the annular scraper plate, the chain passes through the upper side of the gear and is connected to the heat insulation block, the weight of the annular scraper plate is greater than the heat insulation block, and less than the total weight of the heat insulation block and the closing tube.

[0006] Furthermore, a vertically sliding stop rod is provided on the lower side of the gear. After the stop rod is raised, it is placed between two adjacent teeth of the gear. The vertical sliding directions of the heat insulation block and the stop rod are opposite.

[0007] Furthermore, a vertical guide rod is arranged on the inner wall of the central tube, a slide groove moving along the guide rod is arranged on the closing tube and the insulation block, a rotating roller is arranged on the top end of the guide rod, a second rope is arranged on the insulation block, the second rope passes through the upper side of the roller and is connected to the stop rod, one end of the stop rod is vertically slidably connected to the guide rod, and the other end is a free end.

[0008] Furthermore, the annular scraper plate includes a vertical outer scraper, a coaxial inner scraper is arranged on the inner side of the outer scraper, an arc connecting plate is arranged between the outer scraper and the inner scraper, a reinforcing plate is fixed on the upper side of the arc connecting plate, and air holes are arranged on the arc connecting plate to facilitate the passage of magnesium vapor.

[0009] Furthermore, the closed cylinder includes a hollow cylinder body, the upper end of the hollow cylinder body is an open end, the lower end is a closed end, a vertical lifting rod is fixed to the lower side of the closed end, and a lifting assembly for pushing the lifting rod to vertically rise and fall is arranged in the waste slag tank.

[0010] Furthermore, the lifting assembly includes a horizontal push rod, the end of which slides through the side wall of the waste slag tank and is placed in the waste slag tank. A push block inclined upward is provided at the end of the horizontal push rod, and a limiting plate is provided on the side of the upper end of the push block away from the lifting rod.

[0011] Furthermore, the heat-insulating block is a T-shaped block, the lower end of the T-shaped block is placed in the hollow cylinder, and the outer diameter of the upper end of the T-shaped block is larger than the inner diameter of the hollow cylinder.

[0012] Furthermore, a coaxial annular heat insulation plate is provided at the upper end of the central tube, the inner diameter of the annular heat insulation plate is smaller than the outer diameter of the heat insulation block, and the outer diameter of the annular heat insulation plate is larger than the inner diameter of the annular scraper plate.

[0013] Furthermore, columns are arranged at intervals along the circumferential direction at the lower end of the side wall of the central tube. The columns are semicircular columns with the circular side of the semicircular columns facing outwards, and slag outlets are provided between adjacent columns.

[0014] A method for smelting and removing slag in a vertical tank of magnesium metal comprises the following steps:

[0015] (1) When the vertical tank needs to be discharged, the closing cylinder moves upward, the slag outlet and the slag discharge outlet are opened, and the slag falls into the waste slag tank due to its own weight through the slag outlet and the slag discharge outlet. The annular scraper moves vertically downward under the action of its own weight to remove the residue on the outer wall of the central cylinder and the inner wall of the vertical tank. The annular scraper drives the insulation block to move upward in the central cylinder through the chain. The first rope is tightened, and the annular scraper stops moving downward, so that slag discharge and slag removal can be carried out simultaneously;

[0016] (2) The closing cylinder moves downward, closing the slag outlet and the slag discharge port. At the same time, the insulation block moves downward synchronously with the closing cylinder through the first rope. The insulation block and the closing cylinder drive the annular scraper plate to move upward through the chain. The upward distance is consistent with the downward distance of the closing cylinder. At this time, the feed port is located below the annular scraper plate. The feed port is opened and magnesium reduction raw material balls are added into the vertical tank through the feed port. With the addition of magnesium reduction raw material balls, the annular scraper plate is pushed upward and reset, and the insulation block is moved downward and reset.

[0017] Beneficial effects of the present invention:

[0018] The present invention ensures the sealing and heat insulation at the slag discharge port through the cooperation of the heat insulation block and the sealing cylinder. When the slag discharge port needs to be opened, only the sealing cylinder and the heat insulation block need to be lifted, and there is no need to lift the entire central cylinder. Through the cooperation of the sealing cylinder, the heat insulation block and the annular scraper plate, slag removal is performed while slag is discharged, so that residues on the vertical tank and the central cylinder are avoided, and the efficiency of slag discharge and removal is improved. When the annular scraper plate is not removing slag, it is located on the upper side of the outer wall of the central cylinder, and basically does not occupy the effective volume for adding material balls in the vertical tank. In addition, the annular scraper plate also acts as a heat shield to reduce the heat radiation of the reaction zone to the magnesium crystallizer.

[0019] The insulation block and the closed cylinder of the present invention are connected by a first rope. The total weight of the insulation block and the closed cylinder is greater than the annular scraper plate, which limits the downward movement distance of the annular scraper plate and avoids collision and damage between the annular scraper plate and the bottom of the vertical tank. At the same time, when the closed cylinder drives the insulation block to move downward synchronously through the first rope, it can also drive the annular scraper plate to move upward, so that the feed port is located below the annular scraper plate, and magnesium reduction raw material balls are added into the vertical tank through the feed port. With the addition of magnesium reduction raw material balls, the annular scraper plate is pushed to move up and reset, and the insulation block is moved down and reset at the same time.

[0020] The present invention arranges a stop rod, which is raised and placed between two adjacent teeth of the gear to stop the gear from rotating, thereby preventing the annular scraper plate from moving downward at other times except for the slag removal process; the annular scraper plate scrapes the residue on the inner wall of the vertical tank through the outer scraper, and the inner scraper is used to scrape the residue on the outer wall of the central tube; the reinforcing plate is used to support and strengthen the outer scraper, the inner scraper and the arc-shaped connecting plate, and the reinforcing plate cooperates with the arc-shaped connecting plate to increase the weight, thereby ensuring that the residue can be scraped off during the descent of the annular scraper plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 The present invention provides a slag removal device for smelting magnesium in a vertical tank;

[0022] Figure 2 This is a schematic diagram of the structure of the slag removal device after the waste slag is discharged;

[0023] Figure 3 It is a structural schematic diagram after the closing cylinder is moved downward and reset;

[0024] Figure 4It is a top view of the annular scraper plate;

[0025] Figure 5 This is the bottom view of the center tube;

[0026] Figure 6 is a cross-sectional view of an annular scraper plate;

[0027] Figure 7 is a top view of the insulation block;

[0028] Figure 8 It is a schematic diagram of the matching structure of the gear and the stop rod.

[0029] Vertical tank 1, feed port 2, feed pipe 3, slag discharge port 4, waste slag tank 5, central tube 6, through hole 7, column 8, closing tube 9, insulation block 10, first rope 11, annular scraper plate 12, annular insulation plate 13, gear 14, chain 15, discharge port 16, stop rod 18, guide rod 19, chute 20, roller 21, second rope 22, vertical slide 23, outer scraper 24, inner scraper 25, arc connecting plate 26, reinforcing plate 27, air hole 28, lifting rod 30, horizontal push rod 31, push block 32, limit plate 33. DETAILED DESCRIPTION

[0030] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0031] Embodiment 1

[0032] like Figure 1-5 As shown, a magnesium metal vertical tank smelting and slag removal device comprises a vertical tank 1, a feed port 2 is arranged at the lower end of the side wall of the vertical tank 1, the feed port 2 is connected to a feed pipe 3, the feed pipe 3 is connected to a feed device (not shown), such as a screw conveyor, etc., and a feed valve is installed on the feed pipe 3.

[0033] A slag discharge port 4 is provided at the bottom of the vertical tank 1, and the slag discharge port 4 is connected to the waste slag tank 5. A coaxial central tube 6 is placed on the lower side of the vertical tank 1. Through holes 7 are arranged on the side walls of the central tube 6 to facilitate the passage of magnesium vapor. The inner diameter of the through holes 7 is smaller than the diameter of the magnesium reduction raw material balls. The upper and lower ends of the central tube 6 are both open ends. Columns 8 are provided at intervals along the circumferential direction at the lower end of the side walls of the central tube 6. The columns 8 are semicircular columns with the circular side facing outward to avoid waste accumulation at the columns 8. A slag discharge port is provided between adjacent columns 8, and the slag discharge port 4 is communicated with the slag discharge port.

[0034] A vertically sliding closing cylinder 9 is placed on the lower side of the central cylinder 6. The closing cylinder 9 is used to close the slag outlet and the slag discharge port 4. The lower end of the central cylinder 6 is a tapered end. The lower end of the closing cylinder 9 is placed on the inner wall of the tapered end. The upper end of the closing cylinder 9 is placed in the central cylinder 6, and the height of the upper end is higher than the height of the slag outlet.

[0035] A vertically sliding heat-insulating block 10 is arranged at the upper end of the closed cylinder 9. The heat-insulating block 10, the closed cylinder 9 and the central cylinder 6 are arranged coaxially. The heat-insulating block 10 and the closed cylinder 9 are connected by a first rope 11. A vertically sliding annular scraper plate 12 is arranged between the central cylinder 6 and the vertical tank 1. The inner wall of the annular scraper plate 12 slides along the outer side of the central cylinder 6, and the outer wall slides along the inner side of the vertical tank 1.

[0036] A coaxial annular heat insulation plate 13 is fixed to the upper end of the central tube 6. The inner diameter of the annular heat insulation plate 13 is smaller than the outer diameter of the heat insulation block 10, and the outer diameter of the annular heat insulation plate 13 is larger than the inner diameter of the annular scraper plate 12. In addition to heat insulation, the annular heat insulation plate 13 is also used to limit the upward movement distance of the heat insulation block 10 or the annular heat insulation plate 13. A bracket is fixed to the upper end of the annular heat insulation board 13, and a rotating gear 14 is installed on the bracket through a rotating shaft. The upper end of the annular scraper plate 12 is fixedly connected to one end of a chain 15, and the other end of the chain 15 passes through the upper side of the gear 14 and is fixedly connected to the upper end of the insulation block 10. The chain 15 is meshed with the gear 14. The weight of the annular scraper plate 12 is greater than the weight of the insulation block 10. When the annular scraper plate 12 slides downward, the insulation block 10 can be driven to move upward through the chain 15. The weight of the annular scraper plate 12 is less than the total weight of the insulation block 10 and the closed tube 9. When the insulation block 10 and the closed tube 9 move downward synchronously, the annular scraper plate 12 can be driven to move upward through the chain 15. Through the setting of the first rope 11, the downward movement distance of the annular scraper plate 12 is limited to avoid collision and damage between the annular scraper plate 12 and the bottom of the vertical tank 1. The first rope 11, the chain 15 and the gear 14 are all made of high temperature resistant materials.

[0037] The method for using the magnesium metal vertical tank smelting and slag removal device comprises the following steps:

[0038] (1) When the vertical tank 1 needs to discharge slag, the closing cylinder 9 moves upward, opens the slag outlet and the slag outlet 4, and the closing cylinder 9 stops moving upward. The slag falls into the waste slag tank 5 through the slag outlet and the slag outlet 4 due to its own weight. The annular scraper 12 moves vertically downward under its own weight to remove the residue on the outer wall of the central cylinder 6 and the inner wall of the vertical tank 1. The annular scraper 12 drives the insulation block 10 to move upward in the central cylinder 6 through the chain 15. The first rope 11 is tightened, and the annular scraper 12 stops moving downward (such as Figure 2 As shown in the figure), slag discharge and slag removal are realized simultaneously;

[0039] (2) The closing cylinder 9 moves downward to close the slag outlet and the slag discharge port 4. At the same time, the heat insulation block 10 moves downward synchronously with the closing cylinder 9 through the first rope 11. The heat insulation block 10 and the closing cylinder 9 drive the annular scraper plate 12 to move upward through the chain 15. The upward movement distance is consistent with the downward movement distance of the closing cylinder 9. At this time, the feed port 2 is located below the annular scraper plate 12 (such as Figure 3As shown), open the feed port 2, and add magnesium reduction raw material balls into the vertical tank 1 through the feed port 2. As the magnesium reduction raw material balls are added, the annular scraper plate 12 is pushed upward and reset, and at the same time, the insulation block 10 is moved downward and reset.

[0040] The waste slag tank 5 can be evacuated in advance, and under the vacuum state, the slag outlet and the slag discharge port 4 are opened, and the slag falls into the waste slag tank 5. A discharge port 16 is provided at the lower end of the waste slag tank 5. After the slag outlet and the slag discharge port 4 are closed, the discharge port 16 is opened to discharge the slag; similarly, the feeding device can also be evacuated in advance, and under the vacuum state, the feeding port 2 is opened to add magnesium reducing raw material balls into the vertical tank 1; this slag discharge and feeding method is used to reduce heat loss and facilitate continuous production.

[0041] A magnesium crystallizer is arranged in the vertical tank 1 on the upper side of the central tube 6. The magnesium vapor is cooled on the inner wall of the magnesium crystallizer to form crystalline magnesium. An upper opening is also arranged at the upper end of the vertical tank 1 to facilitate the removal of the magnesium crystallizer. In addition, the magnesium crystallizer in the vertical tank 1 can also be replaced by a magnesium condenser arranged outside the vertical tank 1 to guide the magnesium vapor out and then condense it.

[0042] Embodiment 2

[0043] This embodiment is basically the same as the first embodiment, except that Figure 1 , 2 As shown in Figures 4, 7 and 8, a vertically sliding stop rod 18 is provided on the lower side of the gear 14. After the stop rod 18 rises, it is placed between two adjacent teeth of the gear 14 to prevent the gear 14 from rotating and prevent the annular scraper plate 12 from moving downward at other times except the slag removal process. The vertical sliding directions of the insulation block 10 and the stop rod 18 are opposite. When the insulation block 10 is lowered and reset, the stop rod 18 moves up and is placed between two adjacent teeth.

[0044] A vertical guide rod 19 is fixed on the inner wall of the central tube 6. A slide groove 20 that moves along the guide rod 19 is provided on the closing tube 9 and the heat insulating block 10. A rotating roller 21 is installed on the top of the guide rod 19 through a rotating shaft. The upper end of the heat insulating block 10 is fixedly connected to one end of the second rope 22. The other end of the second rope 22 passes through the upper side of the roller 21 and is fixedly connected to the stop rod 18. A vertical slideway 23 is provided on the side of the guide rod 19 close to the stop rod 18. One end of the stop rod 18 is slidably placed in the vertical slideway 23, and the other end of the stop rod 18 is a free end, ensuring that the stop rod 18 moves vertically along the guide rod 19, so that the stop rod 18 can be accurately placed between the teeth of the gear 14 after moving up. The roller 21 and the second rope 22 are both made of high temperature resistant materials. The setting of the guide rod 19 ensures that the closing tube 9 and the heat insulating block 10 move vertically. The arrangement of the roller 21 and the second rope 22 is such that when the insulation block 10 moves upward, the length of the second rope 22 between the roller 21 and the insulation block 10 is shortened, while the length of the second rope 22 between the roller 21 and the stop rod 18 is increased, and the stop rod 18 moves downward and away from the gear 14. When the insulation block 10 moves downward and resets, the stop rod 18 moves upward and resets, and is placed between two adjacent teeth of the gear 14.

[0045] Embodiment 3

[0046] This embodiment is basically the same as the first or second embodiment, except that Figure 1 , 4 As shown in Figure 6, the annular scraper plate 12 includes a vertical outer scraper 24, a coaxial inner scraper 25 is arranged on the inner side of the outer scraper 24, an arc-shaped connecting plate 26 with an opening facing downward is fixed between the outer scraper 24 and the inner scraper 25, a reinforcing plate 27 is fixed on the upper side of the arc-shaped connecting plate 26, one end of the reinforcing plate 27 is connected to the outer scraper 24, and the other end is connected to the inner scraper 25, and the arc-shaped connecting plate 26 is provided with air holes 28 for facilitating the passage of magnesium vapor, the inner diameter of the air holes 28 is smaller than the diameter of the magnesium reduction raw material ball, the reinforcing plate 27 is used to support and strengthen the outer scraper 24, the inner scraper 25 and the arc-shaped connecting plate 26, and the reinforcing plate 27 cooperates with the arc-shaped connecting plate to increase weight to ensure that the residue can be scraped off during the descent of the annular scraper plate, the outer scraper 24 is used to scrape off the residue on the inner wall of the vertical tank 1, and the inner scraper 25 is used to scrape off the residue on the outer wall of the central tube 6.

[0047] Embodiment 4

[0048] This embodiment is basically the same as the first or second embodiment, except that Figure 1-3 As shown, the closed cylinder 9 includes a hollow cylinder, the upper end of the hollow cylinder is an open end, and the lower end is a closed end. A vertical lifting rod 30 is fixed to the lower side of the closed end, and a lifting component for pushing the lifting rod 30 to vertically rise and fall is arranged in the waste slag tank 5.

[0049] The lifting assembly includes a horizontal push rod 31, the end of which slides through the side wall of the waste slag tank 5 and is placed in the waste slag tank 5. A push block 32 inclined upward is fixed at the end of the horizontal push rod 31. A limit plate 33 is provided on the side of the upper end of the push block 32 away from the lifting rod 30. The limit plate 33 and the push block 32 are an integral structure. When the horizontal push rod 31 is pushed into the waste slag tank 5, the inclined surface of the push block 32 pushes the lifting rod 30 to move upward, and the lifting rod 30 pushes the closing cylinder 9 to move upward, and the closing cylinder 9 drives the insulation block 10 to move upward. When the horizontal push rod 31 is pulled out of the waste slag tank 5, the lifting rod 30 moves downward along the inclined surface of the push block 32 due to its own weight, thereby driving the closing cylinder 9 to move downward. The closing cylinder 9 moves downward, and because the total weight of the closing cylinder 9 and the insulation block 10 is greater than the weight of the annular scraper plate 12, the annular scraper plate 12 can be driven to move upward the distance that the closing cylinder 9 moves downward under the joint action of the deadweight of the closing cylinder 9 and the insulation block 10.

[0050] The insulation block 10 is a T-shaped block, the lower end of which is placed in a hollow cylinder, the outer diameter of the upper end of the T-shaped block is larger than the inner diameter of the hollow cylinder, and the lower end of the T-shaped block is also a hollow structure, which is convenient for storing the first rope 11.

[0051] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Other modifications or equivalent substitutions made to the technical solution of the present invention by ordinary technicians in the field should be included in the scope of the claims of the present invention as long as they do not depart from the spirit and scope of the technical solution of the present invention.

Claims

1. A slag removal device for a vertical tank smelting magnesium metal, comprising a vertical tank, a slag discharge port is provided at the bottom of the vertical tank, and the slag discharge port is connected to a waste slag tank, characterized in that: A feed port is arranged at the lower end of the side wall of the vertical tank, a central tube is arranged at the lower side of the vertical tank, both upper and lower ends of the central tube are open ends, a slag outlet communicating with the slag outlet is evenly distributed in the circumference of the lower end of the central tube, a vertically sliding closing tube is arranged in the central tube, the closing tube is used for opening and closing the slag outlet and the slag outlet, a vertically sliding heat insulation block is arranged at the upper end of the closing tube, the heat insulation block and the closing tube are connected by a first rope, a vertically sliding annular slag scraper is arranged between the central tube and the vertical tank, and the central tube is provided with a plurality of slag scrapers ... A rotating gear is arranged at the upper end of the cylinder, a chain is arranged on the annular scraper plate, the chain passes through the upper side of the gear and is connected to the insulation block, the weight of the annular scraper plate is greater than the insulation block, and less than the total weight of the insulation block and the closed cylinder, the closed cylinder comprises a hollow cylinder, the upper end of the hollow cylinder is an open end, the lower end is a closed end, a vertical jacking rod is fixed to the lower side of the closed end, a jacking assembly for pushing the jacking rod to vertically rise and fall is arranged in the waste slag tank, the use method of the magnesium metal vertical tank smelting slag removal device: (1) When the vertical tank needs to be discharged, the closing cylinder moves upward, the slag outlet and the slag discharge outlet are opened, and the slag falls into the waste slag tank due to its own weight through the slag outlet and the slag discharge outlet. The annular scraper moves vertically downward under the action of its own weight to remove the residue on the outer wall of the central cylinder and the inner wall of the vertical tank. The annular scraper drives the insulation block to move upward in the central cylinder through the chain. The first rope is tightened, and the annular scraper stops moving downward, so that slag discharge and slag removal can be carried out simultaneously; (2) The closing cylinder moves downward, closing the slag outlet and the slag discharge port. At the same time, the insulation block moves downward synchronously with the closing cylinder through the first rope. The insulation block and the closing cylinder drive the annular scraper plate to move upward through the chain. The upward distance is consistent with the downward distance of the closing cylinder. At this time, the feed port is located below the annular scraper plate. The feed port is opened and magnesium reduction raw material balls are added into the vertical tank through the feed port. With the addition of magnesium reduction raw material balls, the annular scraper plate is pushed upward and reset, and the insulation block is moved downward and reset.

2. A magnesium metal vertical tank smelting and slag removal device according to claim 1, characterized in that: A vertically sliding stop rod is arranged on the lower side of the gear. After the stop rod rises, it is placed between two adjacent teeth of the gear. The vertical sliding directions of the heat insulation block and the stop rod are opposite.

3. A magnesium metal vertical tank smelting and slag removal device according to claim 2, characterized in that: A vertical guide rod is arranged on the inner wall of the central tube, a slide groove moving along the guide rod is arranged on the closing tube and the insulation block, a rotating roller is arranged on the top of the guide rod, a second rope is arranged on the insulation block, the second rope passes through the upper side of the roller and is connected with the stop rod, one end of the stop rod is vertically slidably connected with the guide rod, and the other end is a free end.

4. The magnesium metal vertical tank smelting and slag removal device according to claim 1 is characterized by: The annular scraper plate includes a vertical outer scraper, a coaxial inner scraper is arranged inside the outer scraper, an arc connecting plate is arranged between the outer scraper and the inner scraper, a reinforcing plate is fixed on the upper side of the arc connecting plate, and air holes are arranged on the arc connecting plate for easy passage of magnesium vapor.

5. The magnesium metal vertical tank smelting and slag removal device according to claim 1 is characterized by: The lifting assembly includes a horizontal push rod, the end of which slides through the side wall of the waste slag tank and is placed in the waste slag tank. The end of the horizontal push rod is provided with a push block inclined upward, and a limit plate is provided on the side of the upper end of the push block away from the lifting rod.

6. The magnesium metal vertical tank smelting and slag removal device according to claim 1 is characterized by: The heat insulation block is a T-shaped block, the lower end of the T-shaped block is placed in the hollow cylinder, and the outer diameter of the upper end of the T-shaped block is greater than the inner diameter of the hollow cylinder.

7. The magnesium metal vertical tank smelting and slag removal device according to claim 1 is characterized by: A coaxial annular heat insulation plate is arranged at the upper end of the central tube, the inner diameter of the annular heat insulation plate is smaller than the outer diameter of the heat insulation block, and the outer diameter of the annular heat insulation plate is larger than the inner diameter of the annular scraper plate.

8. A magnesium metal vertical tank smelting and slag removal device according to claim 1 or 7, characterized in that: The lower end of the side wall of the central tube is provided with columns at intervals along the circumferential direction. The columns are semicircular columns with the circular sides of the semicircular columns facing outwards, and slag outlets are provided between adjacent columns.

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