Slag charge adding device for smelting low-phosphorus steel through high-silicon molten iron converter double-slag method

Abstract

The invention relates to a slag charge adding device for smelting low-phosphorus steel through a high-silicon molten iron converter double-slag method, and relates to the technical field of steel-making slag charge adding. The slag charge adding device comprises a base, a converter body is installed on the base, a fixing frame is fixedly connected to the base, a moving assembly is arranged on the fixing frame, a storage barrel is arranged on the moving assembly, and the storage barrel is connected with the converter body. A sorting assembly is arranged below the storage barrel, and the lower portion of the sorting assembly communicates with a spreading disc. The method has the advantages that the slag materials are separated and scattered in different areas according to different sizes, large particles fall into the center position close to the converter body, small particles fall into the area close to the side wall of the converter body, and the temperature of the center position of the converter body is usually the highest area, so that the slag materials are separated; and the high temperature is beneficial for increasing the melting speed of the large-particle slag charge, so that the large-particle slag charge can participate in the chemical reaction of steelmaking more quickly.

Description

Technical Field

[0001] The invention relates to the field of steelmaking slag addition, in particular to a slag adding device for smelting low-phosphorus steel using a double-slag process in a high-silicon molten iron converter. Background Art

[0002] Converter steelmaking is a common process in steelmaking, where phosphorus removal is a critical step. High-silicon hot metal, due to its high silicon content, easily forms high-basicity slag during the smelting process. Traditional methods typically remove phosphorus by adding slag in single or multiple passes. However, due to the characteristics of high-silicon hot metal, phosphorus removal efficiency is often low, and slag consumption is high, increasing production costs.

[0003] Common slag addition methods in converter steelmaking include both all-in-one and batch addition. However, inappropriate slag addition methods and timing can lead to low phosphorus removal efficiency, significant slag waste, and increased production costs. Furthermore, the operational complexity of batch addition complicates process control, making efficient and stable production difficult. Summary of the Invention

[0004] The purpose of the present invention is to provide a slag adding device for smelting low-phosphorus steel by a double-slag process in a high-silicon molten iron converter.

[0005] In the first aspect, the present invention provides a slag adding device for smelting low-phosphorus steel by the double slag method in a high-silicon molten iron converter, comprising a base, on which a converter body is mounted, a fixed frame fixedly connected to the base, a moving assembly provided on the fixed frame, a storage barrel provided on the moving assembly, a sorting assembly provided below the storage barrel, a spreading plate connected below the sorting assembly, a plurality of through holes provided on the spreading plate, a rotating ring rotatably connected to the spreading plate, and the inner and outer sides of the rotating ring are fixedly connected to a first stirring plate.

[0006] By adopting the above technical solution, when slag needs to be added, the slag in the storage barrel enters the sorting component below, and is sorted by the sorting component according to volume. The sorted slag falls on the spreading plate and falls into the converter body through the through holes on the spreading plate. The larger particles fall on the inner side of the rotating ring, and the smaller particles fall on the outer side of the rotating ring. The slag is added through the spreading plate and distributed more widely and evenly, which greatly accelerates the mixing efficiency of the slag and molten iron and improves the mixing effect. At the same time, the larger particles are located on the inner side of the rotating ring and are close to the center of the converter body when falling into the converter body, while the smaller particles fall in the area close to the side wall of the converter body, so that it can participate in the chemical reaction of steelmaking more quickly, which can greatly reduce the melting time of the granular slag and further improve efficiency.

[0007] Preferably, the fixing frame includes two vertical plates, the two vertical plates are fixedly connected to the base, two horizontal plates are fixedly connected between the two vertical plates, square through grooves are provided on the horizontal plates, sliding seats are slidably connected in the square through grooves, and a support plate is fixedly connected to the two sliding seats, and a through groove is provided on the support plate, and the storage barrel is fixed in the through groove.

[0008] By adopting the above technical solution, when adding materials, it moves to the top of the converter body to add materials. After completion, it moves to the side to avoid, freeing up the space above the converter plate, making it easier to insert equipment such as the oxygen gun into the converter body.

[0009] Preferably, the moving assembly includes two mounting plates, the two mounting plates are fixedly connected to the support plate, a first servo motor is installed on one side of the mounting plate, the main shaft of the first servo motor is fixedly connected to the gear, the outer sides of the two horizontal plates are fixedly connected to the rack, and the two gears are respectively engaged with the two racks.

[0010] By adopting the above technical solution, the storage barrel is driven by the first servo motors, gears and racks on both sides to move, which is more convenient to use.

[0011] Preferably, the lower surface of the storage barrel is fixedly connected to the box body, the storage barrel is communicated with the box body, a solenoid valve is installed between the storage barrel and the box body, the sorting component includes a conical filter cartridge, the conical filter cartridge is fixedly connected to the box body, the lower surface of the conical filter cartridge is communicated with the first vertical pipe, the lower surface of the box body is communicated with the second vertical pipe, the center of the second vertical pipe and the center of the first vertical pipe are on the same axis, and a switch assembly is provided between the conical filter cartridge and the first vertical pipe.

[0012] By adopting the above technical solution, the weight of the remaining slag in the storage barrel is controlled by a weight sensor and a solenoid valve, thereby controlling the amount of slag added. By timing the solenoid valve, the time of addition can be controlled. The slag enters the conical filter cartridge, and particles smaller than the aperture of the conical filter cartridge pass through the conical filter cartridge, while larger particles remain in the conical filter cartridge. After the slag is separated, the switch assembly opens the first vertical pipe, allowing the large particles of slag remaining inside to enter the first vertical pipe and fall.

[0013] Preferably, the inner wall of the storage barrel is fixedly connected to the support plate, the upper surface of the support plate is fixedly connected to the second servo motor, the main shaft of the second servo motor is fixedly connected to the rotating rod, the rotating rod passes downward through the storage barrel and the box body and is rotatably connected to the storage barrel and the box body, the rotating rod is fixedly connected to multiple stirring rods in the area where the storage barrel is located, and the rotating rod is fixedly connected to the second stirring plate in the area where the conical filter cartridge is located.

[0014] By adopting the above technical solution, the rotating rod stirs the slag in the storage barrel through the stirring rod, promoting the slag to enter the conical filter barrel, and stirring the slag through the second stirring plate, prompting smaller slag to pass through the conical filter barrel for separation, which is conducive to saving time and improving efficiency.

[0015] Preferably, the switch assembly includes a fixed plate, which is fixedly connected to the first vertical tube, and the fixed plate is provided with two through grooves, and the lower surface of the fixed plate is provided with two arc-shaped slide grooves, and the sliding blocks are slidably connected in the arc-shaped slide grooves, and the lower surfaces of the two sliders are fixedly connected to the baffle, and the baffle is provided with a circular through groove, and the rotating rod passes through the fixed plate, and the rotating rod passes through the circular through groove, and the outer side of the rotating rod is provided with a sliding hole, and the moving block is slidably connected in the sliding hole, and the second spring is fixedly connected between the moving block and the rotating rod, and one side of the moving block is fixedly connected to the toggle block, and the inner wall of the circular through groove on the baffle is fixedly connected to the arc block, both sides of the arc block are arc-shaped, the surface of the arc block is smooth, and the thickness of the arc block is the same as the thickness of the baffle.

[0016] By adopting the above technical solution, when slag is added, the second servo motor rotates forward, the rotating rod rotates forward to stir the slag, and the baffle is moved by the outer toggle block, and the baffle blocks the through slot on the fixed plate. After the sorting is completed, the second servo motor is reversed, and the baffle is reversed by the toggle block to expose the through slot. The larger particles of slag enter the second vertical pipe, go to the spreading plate, and enter the converter body.

[0017] Preferably, the lower ends of the first vertical pipe and the second vertical pipe are connected to a connecting pipe, the connecting pipe below the first vertical pipe is rotatably connected to the inner pipe, and the connecting pipe below the second vertical pipe is fixedly connected to the outer pipe, the centers of the inner pipe and the outer pipe are on the same axis, the lower end of the inner pipe is conical, the inner pipe is fixedly connected to the rotating ring, the lower end of the outer pipe is fixedly connected to the circular shell, the spreading plate is located in the circular shell, the outer side of the outer pipe is fixedly connected to the mounting ring, and a hydraulic cylinder is installed between the mounting ring and the box body.

[0018] By adopting the above technical solution, after the storage barrel is located above the converter body, the hydraulic cylinder pushes the outer tube, the outer tube and the inner tube descend, the connecting tube is stretched, and the spreading plate extends into the converter body, thus preventing the slag from falling from the spreading plate and falling on the outside of the converter body, causing waste.

[0019] Preferably, the inner side of the inner tube is fixedly connected to two fixed rods, a square tube is fixedly connected between the fixed rods, a square rod is slidably connected inside the square tube, the rotating rod passes through the connecting tube below the first vertical tube and extends into the inner tube, and the rotating rod is fixedly connected to the square rod.

[0020] By adopting the above technical solution, when the rotating rod rotates, the inner tube and the rotating ring are driven to rotate through the square rod and the square tube, and the slag is spread out through the first stirring plate on the rotating ring to promote the falling of the slag.

[0021] Preferably, two sliding grooves are provided on the inner side of the circular shell, a slider is slidably connected in the sliding groove, a first spring is fixedly connected between the slider and the circular shell, one side of the two sliders is fixedly connected to a shielding ring, the shielding ring is fixedly connected to the spreading disk, the outer side of the inner tube is fixedly connected to a round rod, the inner wall of the outer tube is fixedly connected to a cross bar, and the outer side of the cross bar is rotatably connected to a rotating disk.

[0022] By adopting the above technical solution, when the inner tube rotates, when the outer round rod contacts the rotating disk, the round rod passes over the rotating disk, and the rotating disk lifts the inner tube. The inner tube pulls the spreading disk up together in the circular shell through the rotating ring, the slider slides up, and the first spring is compressed. When the round rod is separated from the rotating disk, the spreading disk descends, forming vibration, which prompts the slag to fall through the spreading disk, saving time.

[0023] In summary, the present invention includes at least one of the following beneficial technical effects: 1. By setting a rotating ring and a spreading plate, the slag in the storage barrel enters the sorting component below, and the sorting component sorts the slag according to its volume. The sorted slag falls on the spreading plate, wherein larger particles fall on the inner side of the rotating ring and smaller particles fall on the outer side of the rotating ring. Then, the rotating ring rotates, and the slag is stirred by the first stirring plates on the inner and outer sides, so as to promote the slag to pass through the through hole and fall, and at the same time promote the slag to be evenly distributed on the spreading plate, so that the slag is distributed more widely and evenly, the mixing efficiency of the slag and the molten iron is accelerated, and the mixing effect is improved. At the same time, the larger particles are located on the inner side of the rotating ring, and when falling into the converter body, they are close to the center of the converter body, while the smaller particles fall in the area near the side wall of the converter body, because the temperature at the center of the converter body is usually the highest area, and the higher temperature is conducive to accelerating the melting speed of large-particle slag, so that it can participate in the chemical reaction of steelmaking faster, and the small-particle slag falls in the relatively low-temperature area on the side, avoiding occupying the high-temperature area in the center, which can greatly reduce the melting time of the granular slag and further improve efficiency; 2. By setting the switch assembly, when adding slag, the second servo motor rotates forward, and the rotating rod rotates forward to stir the slag. At the same time, the rotating rod toggles the baffle through the outer toggle block, so that the baffle drives the sliding block to move to one end of the arc chute. At this time, the baffle blocks the through-slot on the fixed plate. When the slag needs to enter the first vertical pipe, the second servo motor is reversed, and the baffle is reversed through the toggle block, so that the baffle drives the sliding block to move to the other end of the arc chute. The baffle is misaligned with the through-slot on the fixed plate, and without the obstruction of the baffle, the larger particles of slag enter the second vertical pipe, go to the spreading disk, and enter the converter body. The rotating rod stirs the slag both forward and reverse. Forward rotation closes the through-slot, and reverse rotation opens the through-slot, which is easy to use. 3. By setting the round rod and the rotating disk, when the inner tube rotates, when the outer round rod contacts the rotating disk, the round rod passes over the rotating disk, and the rotating disk lifts the inner tube. The inner tube pulls the spreading disk up together in the circular shell through the rotating ring, the slider slides up, and the first spring is compressed. When the round rod is separated from the rotating disk, the spreading disk descends, forming vibration, which prompts the slag to fall through the spreading disk, saving time. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the use of the present invention; Figure 3 It is a structural schematic diagram of the connecting pipe of the present invention; Figure 4 It is a schematic cross-sectional structural diagram of the connecting pipe of the present invention; Figure 5 It is a schematic cross-sectional structural diagram of the inner tube and the outer tube of the present invention; Figure 6 It is a structural schematic diagram of the spreading disc and the rotating ring of the present invention; Figure 7 It is a structural schematic diagram of the round rod and the rotating disk of the present invention; Figure 8 It is a structural schematic diagram of the switch assembly of the present invention.

[0025] Explanation of reference numerals: 1. base; 2. fixed frame; 21. vertical plate; 22. horizontal plate; 23. sliding seat; 24. supporting plate; 3. moving assembly; 31. mounting plate; 32. gear; 33. rack; 4. storage barrel; 5. sorting assembly; 6. spreading plate; 7. rotating ring; 8. first stirring plate; 9. box; 51. conical filter cartridge; 52. first vertical pipe; 53. second vertical pipe; 54. switch assembly; 541. fixed plate; 542. sliding block ; 543, baffle; 544, moving block; 545, second spring; 546, toggle block; 547, arc block; 10, support plate; 11, rotating rod; 12, stirring rod; 13, second stirring plate; 102, connecting pipe; 103, inner pipe; 14, outer pipe; 15, circular shell; 16, hydraulic cylinder; 17, square pipe; 18, square rod; 19, slider; 20, first spring; 201, round rod; 202, cross bar; 203, rotating disk. DETAILED DESCRIPTION

[0026] The following is combined with Figure 1 -Attached Figure 8 , the present invention is described in further detail.

[0027] The slag adding device of the double slag method for smelting low-phosphorus steel in a high-silicon molten iron converter comprises a base 1, a converter body is mounted on the base 1, a fixed frame 2 is fixedly connected to the base 1, a moving component 3 is provided on the fixed frame 2, a storage barrel 4 is provided on the moving component 3, slag is stored in the storage barrel 4, a sorting component 5 is provided below the storage barrel 4, the sorting component 5 is connected to a spreading plate 6 below, a plurality of through holes are provided on the spreading plate 6, the spreading plate 6 is rotatably connected to a rotating ring 7, the inner and outer sides of the rotating ring 7 are fixedly connected to a first stirring plate 8, when in use, when slag needs to be added, the moving component 3 drives the storage barrel 4 to move so that the spreading plate 6 is located above the converter body, and then the slag in the storage barrel 4 enters the sorting component 5 below, which is sorted according to the volume, and the sorted slag falls on the spreading plate 6 and falls into the converter body through the through holes on the spreading plate, wherein the larger particles fall on the inner side of the rotating ring 7, and the smaller particles fall on the rotating ring 7 , and then the rotating ring 7 rotates, and the larger and smaller particles of slag are moved through the first stirring plates 8 on the inner and outer sides to promote the slag to pass through the through hole and fall, and at the same time promote the slag to be evenly distributed on the spreading plate 6, so that the slag is dispersed and falls into the converter body. Compared with the method of blowing or pouring, the slag is added through the spreading plate 6, and the distribution is wider and more uniform, which greatly accelerates the mixing efficiency of the slag and the molten iron, and improves the mixing effect. At the same time, the larger particles are located on the inner side of the rotating ring 7, and when falling into the converter body, they are close to the center of the converter body, while the smaller particles fall on the area near the side wall of the converter body, because the temperature at the center of the converter body is usually the highest area, and the higher temperature is conducive to accelerating the melting speed of large-particle slag, so that it can participate in the chemical reaction of steelmaking faster, and the small-particle slag falls in the relatively low-temperature area on the side to avoid occupying the high-temperature area in the center. This can greatly reduce the melting time of the granular slag and further improve efficiency.

[0028] like Figure 1 and Figure 2 As shown, the fixed frame 2 includes two vertical plates 21, which are fixedly connected to the base 1, and two horizontal plates 22 are fixedly connected between the two vertical plates 21. The horizontal plates 22 are provided with square through grooves, and the sliding seats 23 are slidably connected in the square through grooves. The two sliding seats 23 are fixedly connected to the supporting plates 24, and the supporting plates 24 are provided with through grooves. The storage barrel 4 is fixed in the through grooves. The storage barrel 4 can move horizontally above the converter body. When adding materials, it is moved to the top of the converter body to add materials. After completion, it is moved to one side to avoid it, leaving space above the converter plate body to facilitate the insertion of oxygen guns and other equipment into the converter body.

[0029] like Figure 1 and Figure 2As shown, the moving assembly 3 includes two mounting plates 31, and the two mounting plates 31 are fixedly connected to the support plate 24. A first servo motor is installed on one side of the mounting plate 31, and the main shaft of the first servo motor is fixedly connected to the gear 32. The outer sides of the two transverse plates 22 are fixedly connected to the rack 33, and the two gears 32 are respectively engaged with the two racks 33. When slag is added, the first servo motors on both sides are started to drive the storage barrel 4 to move to the top of the converter body. The position is provided by the position sensor installed on the transverse plate 22. After alignment with the converter body, material is added. After filling is completed, the first servo motor drives the storage barrel 4 away from the top of the converter body, which is more convenient to use.

[0030] like Figure 3 and Figure 4 As shown, the lower surface of the storage barrel 4 is fixedly connected to the box body 9, the storage barrel 4 is communicated with the box body 9, an electromagnetic valve is installed between the storage barrel 4 and the box body 9, a weight sensor is installed in the storage barrel 4, the electromagnetic valve and the weight sensor are connected and used in combination, the sorting component 5 includes a conical filter cartridge 51, the conical filter cartridge 51 is fixedly connected to the box body 9, the lower surface of the conical filter cartridge 51 is communicated with the first vertical pipe 52, the lower surface of the box body 9 is communicated with the second vertical pipe 53, the center of the second vertical pipe 53 and the first vertical pipe 52 are on the same axis, a switch component 54 is provided between the conical filter cartridge 51 and the first vertical pipe 52, and the weight of the remaining slag in the storage barrel 4 is controlled by the weight sensor and the electromagnetic valve. The amount of slag added can be controlled by timing the solenoid valve. When adding slag, the solenoid valve opens, and the slag in the storage barrel 4 enters the box 9 below and falls into the conical filter cartridge 51. Particles smaller than the pore size of the conical filter cartridge 51 pass through the conical filter cartridge 51, while larger particles remain in the conical filter cartridge 51. During this process, the switch component 54 blocks the first vertical pipe 52 to prevent small particles of slag from directly entering the first vertical pipe 52. When the conical filter cartridge 51 separates the small particles from the large particles of slag, the switch component 54 opens the first vertical pipe 52, allowing the large particles of slag remaining inside to enter the first vertical pipe 52 and fall.

[0031] like Figure 4As shown, the inner wall of the storage barrel 4 is fixedly connected to the support plate 10, the upper surface of the support plate 10 is fixedly connected to the second servo motor, the main shaft of the second servo motor is fixedly connected to the rotating rod 11, the rotating rod 11 downwardly penetrates the storage barrel 4 and the box body 9 and is rotatably connected to the storage barrel 4 and the box body 9, the rotating rod 11 is located in the area of ​​the storage barrel 4 and is fixedly connected to multiple stirring rods 12, and the rotating rod 11 is located in the area of ​​the conical filter barrel 51 and is fixedly connected to the second stirring plate 13. When slag is added, after the solenoid valve in the storage barrel 4 is opened, the second drive motor is started, driving the rotating rod 11 to rotate, and the rotating rod 11 stirs the slag in the storage barrel 4 through the stirring rod 12, promotes the slag to enter the conical filter barrel 51, and stirs the slag through the second stirring plate 13, prompting smaller slag to pass through the conical filter barrel 51 for separation, which is conducive to saving time and improving efficiency.

[0032] like Figure 4 and Figure 8As shown, the switch assembly 54 includes a fixed plate 541, which is fixedly connected to the first vertical tube 52. The fixed plate 541 is provided with two through grooves. The lower surface of the fixed plate 541 is provided with two arc-shaped slide grooves. The sliding blocks 542 are slidably connected in the arc-shaped slide grooves. The lower surfaces of the two sliders 19 are fixedly connected to the baffle 543. The baffle 543 is provided with a circular through groove. The rotating rod 11 passes through the fixed plate 541. The rotating rod 11 passes through the circular through groove. The outer side of the rotating rod 11 is provided with a sliding hole. The sliding hole is slidably connected to the moving block 544. The moving block 544 is connected to the rotating rod 1 1 is fixedly connected to the second spring 545, and one side of the moving block 544 is fixedly connected to the toggle block 546. The thickness of the toggle block 546 is less than the thickness of the baffle 543. There is a certain distance between the toggle block 546 and the fixed plate 541, but the toggle block 546 still rests on the baffle 543. The inner wall of the circular through groove on the baffle 543 is fixedly connected to the arc block 547. Both sides of the arc block 547 are arc-shaped, and the surface of the arc block 547 is smooth. The thickness of the arc block 547 is the same as that of the baffle 543. When adding slag, the second servo motor rotates forward and the second servo motor rotates backward. When the movable rod 11 rotates forward to stir the slag, the rotating rod 11 toggles the baffle 543 through the outer toggle block 546, so that the baffle 543 drives the sliding block 542 to move to one end of the arc chute. At this time, the baffle 543 blocks the through slot on the fixed plate 541, so that the slag cannot enter the first vertical pipe 52. After the sorting is completed, when the slag needs to enter the first vertical pipe 52, the second servo motor is reversed, and the baffle 543 is reversed through the toggle block 546, so that the baffle 543 drives the sliding block 542 to move to the other end of the arc chute. The baffle 543 and the fixed plate are The through slot on 541 is misaligned, and the baffle 543 is lost to block it. The larger particles of slag enter the second vertical pipe 53, go to the spreading plate 6, and enter the converter body. When the sliding block 542 reaches the two ends of the arc-shaped slot, when the toggle block 546 encounters the arc block 547 again, the toggle block 546 slides into the sliding hole to avoid it under the obstruction of the arc block 547. After passing through, it extends out under the push of the second spring 545. When it is necessary to push the baffle 543 to rotate, the friction is increased by the toggle block 546 and the arc block 547, which facilitates the rotation of the baffle 543.

[0033] like Figure 2 、 Figure 3 and Figure 4As shown, the lower ends of the first vertical pipe 52 and the second vertical pipe 53 are both connected to the connecting pipe 102. The connecting pipe 102 is a flexible, high-temperature-resistant and corrosion-resistant pipe, such as a metal corrugated hose. The connecting pipe 102 below the first vertical pipe 52 is rotatably connected to the inner pipe 103. A mounting ring is installed at the lower end of the connecting pipe 102, and the mounting ring is rotatably connected to the inner pipe 103. The connecting pipe 102 below the second vertical pipe 53 is fixedly connected to the outer pipe 14. The centers of the inner pipe 103 and the outer pipe 14 are on the same axis. The lower end of the inner pipe 103 is conical, and the inner pipe 103 is fixedly connected to the rotating ring 7. The lower end of the outer pipe 14 is fixedly connected to the circular shell 15. The spreading plate 6 is located in the circular shell 15. The outer side of the outer pipe 14 is fixedly connected to the mounting ring. Between the mounting ring and the box body 9 A hydraulic cylinder 16 is installed. When slag is added, after the storage barrel 4 is located above the converter body, the hydraulic cylinder 16 pushes the outer tube 14, and the outer tube 14 and the inner tube 103 descend, the connecting tube 102 is stretched, and the spreading plate 6 extends into the converter body, so as to prevent the slag from falling from the spreading plate 6 and falling on the outside of the converter body, causing waste. The larger particles of slag pass through the first vertical pipe 52 and the smaller connecting tube 102 on the inside into the inner tube 103 below, and enter the inner side of the rotating ring 7 on the spreading plate 6 through the inner tube 103, while the smaller particles of slag pass through the larger connecting tube 102 and the smaller connecting tube 102 into the outer tube 14 and the inner tube 103, fall on the outside of the rotating ring 7 on the spreading plate 6, and fall into the converter body from different areas.

[0034] like Figure 5 and Figure 7 As shown, two fixed rods are fixedly connected to the inner side of the inner tube 103, and a square tube 17 is fixedly connected between the fixed rods. A square rod 18 is slidably connected inside the square tube 17, and the rotating rod 11 passes through the connecting tube 102 below the first vertical tube 52 and extends into the inner tube 103. The rotating rod 11 is fixedly connected to the square rod 18. When the rotating rod 11 rotates, the inner tube 103 and the rotating ring 7 are driven to rotate through the square rod 18 and the square tube 17, and the slag is spread out through the first stirring plate 8 on the rotating ring 7, thereby promoting the slag to fall.

[0035] like Figure 4 and Figure 5As shown, two slide grooves are provided on the inner side of the circular shell 15, and a slider 19 is slidably connected in the slide groove. A first spring 20 is fixedly connected between the slider 19 and the circular shell 15. One side of the two sliders 19 is fixedly connected to a blocking ring, and the blocking ring is fixedly connected to the spreading disk 6. The outer side of the inner tube 103 is fixedly connected to a round rod 201, and the inner wall of the outer tube 14 is fixedly connected to a cross bar 202. The outer side of the cross bar 202 is rotatably connected to the rotating disk 203. When the inner tube 103 rotates, when the outer round rod 201 contacts the rotating disk 203, the round rod 201 moves from The inner tube 103 is lifted up by the rotating disk 203, and the inner tube 103 pulls the spreading disk 6 to rise together in the circular shell 15 through the rotating ring 7. The slider 19 slides up and the first spring 20 is compressed. When the round rod 201 is separated from the rotating disk 203, the spreading disk 6 descends, forming vibration, which causes the slag to fall through the spreading disk 6, saving time. When the slider 19 is in the lowest position of the chute, the round rod 201 is aligned with the upper half of the rotating disk 203, so the round rod 201 will not pass under the rotating disk 203.

[0036] The implementation principle of the embodiment of the present invention is as follows: when adding slag, the first servo motors on both sides are started, driving the storage barrel 4 to move to the top of the converter body, the hydraulic cylinder 16 pushes the outer tube 14, the outer tube 14 and the inner tube 103 are lowered, the connecting tube 102 is stretched, the spreading plate 6 is extended into the converter body, the solenoid valve is opened, the slag in the storage barrel 4 enters the box 9 below, and falls into the conical filter cartridge 51. Particles smaller than the aperture of the conical filter cartridge 51 pass through the conical filter cartridge 51, the second drive motor is started, driving the rotating rod 11 to rotate forward, and the rotating rod 11 stirs the slag in the storage barrel 4 through the stirring rod 12, and the slag is stirred by the stirring rod 12. The slag in the conical filter drum 51 is stirred by the second stirring plate 13. When the rotating rod 11 rotates forward to stir the slag, the rotating rod 11 toggles the baffle 543 through the outer toggle block 546, so that the baffle 543 drives the sliding block 542 to move to one end of the arc chute. At this time, the baffle 543 blocks the through groove on the fixed plate 541, so that the slag cannot enter the first vertical pipe 52. After the sorting is completed, when the slag needs to enter the first vertical pipe 52, the second servo motor is reversed, and the toggle block 546 is used to toggle the baffle 543 in the reverse direction, so that the baffle 543 drives the sliding block 542 to move to the other end of the arc chute. 43 is misaligned with the through slot on the fixed plate 541, and the baffle 543 is lost to block the larger particles of slag into the second vertical pipe 53. The larger particles of slag pass through the first vertical pipe 52 and the smaller connecting pipe 102 on the inside to enter the inner pipe 103 below, and enter the inner side of the rotating ring 7 on the spreading plate 6 through the inner pipe 103. The smaller particles of slag pass between the larger connecting pipe 102 and the smaller connecting pipe 102 and enter between the outer pipe 14 and the inner pipe 103, and fall on the outer side of the rotating ring 7 on the spreading plate 6. When the rotating rod 11 rotates, the inner pipe 103 and the rotating ring 7 are driven by the square rod 18 and the square pipe 17. 7 rotates, and the slag is spread out through the first stirring plate 8 on the rotating ring 7. When the inner tube 103 rotates, when the outer round rod 201 contacts the rotating disk 203, the round rod 201 passes over the rotating disk 203, and the rotating disk 203 lifts the inner tube 103. The inner tube 103 pulls the spreading disk 6 to rise together in the circular shell 15 through the rotating ring 7, the slider 19 slides up, and the first spring 20 is compressed. When the round rod 201 is separated from the rotating disk 203, the spreading disk 6 descends, forming vibration, so that larger particles pass through the spreading disk 6 and fall near the center of the converter body, and smaller particles fall at the edge.

[0037] The embodiments of this specific embodiment are preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Identical components are denoted by the same reference numerals. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention are intended to be within the scope of protection of the present invention.

Claims

1. A slag adding device for smelting low-phosphorus steel using a double-slag method in a high-silicon hot metal converter, comprising a base (1), characterized in that: The base (1) is provided with a converter body, the base (1) is fixedly connected with a fixing frame (2), the fixing frame (2) is provided with a moving assembly (3), the moving assembly (3) is provided with a storage barrel (4), a sorting assembly (5) is provided below the storage barrel (4), the sorting assembly (5) is connected to a spreading disc (6) below, the spreading disc (6) is provided with a plurality of through holes, the spreading disc (6) is rotatably connected with a rotating ring (7), and the inner side and the outer side of the rotating ring (7) are fixedly connected to a first stirring plate (8).

2. The slag adding device for smelting low-phosphorus steel by double slag process of high silicon molten iron converter according to claim 1, characterized in that: The fixing frame (2) comprises two vertical plates (21), the two vertical plates (21) are fixedly connected to the base (1), two horizontal plates (22) are fixedly connected between the two vertical plates (21), the horizontal plates (22) are provided with square through grooves, and the square through grooves are slidably connected to sliding seats (23), the two sliding seats (23) are fixedly connected to supporting plates (24), the supporting plates (24) are provided with through grooves, and the storage barrels (4) are fixed in the through grooves.

3. The slag adding device for smelting low-phosphorus steel by double slag process of high silicon molten iron converter according to claim 2, characterized in that: The moving assembly (3) includes two mounting plates (31), the two mounting plates (31) are fixedly connected to the support plate (24), a first servo motor is installed on one side of each mounting plate (31), the main shaft of each first servo motor is fixedly connected to a gear (32), the outer sides of each of the two transverse plates (22) are fixedly connected to a rack (33), and the two gears (32) are respectively engaged with the two racks (33).

4. The slag adding device for smelting low-phosphorus steel by double slag process of high silicon molten iron converter according to claim 1, characterized in that: The lower surface of the storage barrel (4) is fixedly connected to the box (9), the storage barrel (4) is in communication with the box (9), and a solenoid valve is installed between the storage barrel (4) and the box (9). The sorting assembly (5) comprises a conical filter cartridge (51), the conical filter cartridge (51) is fixedly connected to the box (9), the lower surface of the conical filter cartridge (51) is in communication with a first vertical pipe (52), and the lower surface of the box (9) is in communication with a second vertical pipe (53), the center of the second vertical pipe (53) and the center of the first vertical pipe (52) are on the same axis, and a switch assembly (54) is provided between the conical filter cartridge (51) and the first vertical pipe (52).

5. The slag adding device for smelting low-phosphorus steel by double slag process of high silicon molten iron converter according to claim 4, characterized in that: The inner wall of the storage barrel (4) is fixedly connected to the support plate (10), the upper surface of the support plate (10) is fixedly connected to the second servo motor, the main shaft of the second servo motor is fixedly connected to the rotating rod (11), the rotating rod (11) passes downward through the storage barrel (4) and the box body (9) and is rotatably connected to the storage barrel (4) and the box body (9), the rotating rod (11) is fixedly connected to a plurality of stirring rods (12) in the area where the storage barrel (4) is located, and the rotating rod (11) is fixedly connected to the second stirring plate (13) in the area where the conical filter cartridge (51) is located.

6. The slag adding device for smelting low-phosphorus steel using a double-slag process in a high-silicon hot metal converter according to claim 5, characterized in that: The switch assembly (54) includes a fixed plate (541), the fixed plate (541) is fixedly connected to the first vertical tube (52), the fixed plate (541) is provided with two through grooves, the lower surface of the fixed plate (541) is provided with two arc-shaped sliding grooves, the sliding blocks (542) are slidably connected in the arc-shaped sliding grooves, the lower surfaces of the two sliders (19) are fixedly connected to the baffle (543), the baffle (543) is provided with a circular through groove, the rotating rod (11) passes through the fixed plate (541), and the rotating rod (11) passes through the circular through groove. A sliding hole is provided on the outer side of the rotating rod (11), and a moving block (544) is slidably connected in the sliding hole. A second spring (545) is fixedly connected between the moving block (544) and the rotating rod (11). One side of the moving block (544) is fixedly connected to a toggle block (546). The inner wall of the circular through groove on the baffle (543) is fixedly connected to an arc block (547). Both sides of the arc block (547) are arc-shaped. The surface of the arc block (547) is smooth, and the thickness of the arc block (547) is the same as that of the baffle (543).

7. The slag adding device for smelting low-phosphorus steel by double slag process of high silicon molten iron converter according to claim 6, characterized in that: The lower ends of the first vertical tube (52) and the second vertical tube (53) are both connected to the connecting tube (102). The connecting tube (102) below the first vertical tube (52) is rotatably connected to the inner tube (103). The connecting tube (102) below the second vertical tube (53) is fixedly connected to the outer tube (14). The centers of the inner tube (103) and the outer tube (14) are on the same axis. The lower end of the inner tube (103) is conical. The inner tube (103) is fixedly connected to the rotating ring (7). The lower end of the outer tube (14) is fixedly connected to the circular shell (15). The spreading disc (6) is located in the circular shell (15). The outer side of the outer tube (14) is fixedly connected to the mounting ring. A hydraulic cylinder (16) is installed between the mounting ring and the box (9).

8. The slag adding device for smelting low-phosphorus steel by double slag process of high silicon molten iron converter according to claim 7, characterized in that: Two fixed rods are fixedly connected to the inner side of the inner tube (103), a square tube (17) is fixedly connected between the fixed rods, and a square rod (18) is slidably connected inside the square tube (17). The rotating rod (11) passes through the connecting tube (102) below the first vertical tube (52) and extends into the inner tube (103). The rotating rod (11) is fixedly connected to the square rod (18).

9. The slag adding device for smelting low-phosphorus steel using a double-slag process in a high-silicon molten iron converter according to claim 7, characterized in that: Two slide grooves are provided on the inner side of the circular shell (15), and a slider (19) is slidably connected in the slide grooves. A first spring (20) is fixedly connected between the slider (19) and the circular shell (15). One side of the two sliders (19) is fixedly connected to a shielding ring, and the shielding ring is fixedly connected to the spreading disk (6). The outer side of the inner tube (103) is fixedly connected to a round rod (201), and the inner wall of the outer tube (14) is fixedly connected to a cross rod (202). The outer side of the cross rod (202) is rotatably connected to a rotating disk (203).

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