Material conveying device for preparing high-activity steel slag micro powder and using method of material conveying device

Abstract

The invention relates to the technical field of steel slag micro-powder preparation, and discloses a material conveying device for high-activity steel slag micro-powder preparation and a using method thereof.The material conveying device comprises a sorting mechanism, the sorting mechanism comprises a cover body, a material conveying pipe is fixedly installed in the cover body, and a spiral blade is rotatably installed in the material conveying pipe; an inner cavity of the cover body is a conical cavity with a small upper end and a large lower end, a sorting sleeve is rotationally installed in the conical cavity, and a first driving motor and a second driving motor are arranged at the top end of the cover body. According to the material conveying device, the material conveying pipes and the sorting sleeve are arranged, the materials are lifted through the spiral blades rotating in the material conveying pipes, when the materials are discharged out of the discharging ports and fall down, the materials with different particle sizes are discharged out of the discharging pipes through airflow with different flow speeds, and when steel slag micro powder is conveyed, the material conveying efficiency is greatly improved. The function of sorting various materials with different particle sizes is achieved, sorting of multi-stage materials is completed through one-time material conveying, and the production efficiency is greatly improved.

Description

Technical Field

[0001] The present invention relates to the technical field of steel slag micropowder preparation, and in particular to a material conveying device for preparing high-activity steel slag micropowder and a use method thereof. Background Art

[0002] The production of steel slag powder is a complex process involving multiple steps and technical details. The material transportation is mainly the transportation of powder. Generally, the material is transported from one place to another by airflow. It has the advantages of high efficiency, environmental protection, energy saving, etc. In the prior art, the patent document with announcement number CN221295051U discloses a steel slag powder conveying device, including a main body component, the main body component includes a shell, a screening component is arranged inside the shell, and the screening component includes a feed pipe, a screening pipe, a second motor, a transmission shaft, a spiral blade, a dust cover, a collection box and a handle; the top of the shell is fixedly connected with a feed pipe, and the bottom end of the feed pipe is connected with a screening pipe. Steel slag powder is fed into the feed pipe, and the spiral blade is driven to rotate by the second motor. The powder is screened while being transported. The powder with qualified particle size falls onto the bottom conveyor belt and is transported to the reaction tank, while the unqualified powder is transported to the collection box, which is convenient for the staff to collect and re-grind it, ensuring that the particle size of the transported steel slag powder meets the reaction requirements. At the same time, the steel slag powder transportation environment is closed by the shell to prevent the powder from being contaminated by impurities and to avoid environmental pollution caused by dust.

[0003] In the actual production process, steel slag powder is a mixture of various particles of different sizes. The particle size of ultrafine powder even reaches about 40μm. It is difficult to screen out powders of different particle sizes through simple screening through the above-mentioned screening tube. The finer the powder, the more difficult it is to screen and the lower the efficiency. Based on this, the existing material conveying device has the disadvantage of being difficult to screen out a variety of materials of different particle sizes when conveying steel slag powder. It is very inconvenient to use and needs to be solved urgently. Summary of the invention

[0004] The purpose of the present invention is to solve the problem in the prior art that it is difficult to screen out a variety of materials of different particle sizes when the existing material conveying device conveys steel slag powder, and to propose a material conveying device for preparing high-activity steel slag powder and a method of using the same.

[0005] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a material conveying device for preparing high-activity steel slag micropowder, including a sorting mechanism, the sorting mechanism includes a cover body, a feed pipe is fixedly installed inside the cover body, a spiral blade is rotatably installed inside the feed pipe, a feed hopper and a first drive motor are fixedly installed on the top of the feed pipe, the first drive motor drives the spiral blade to rotate, and an air inlet pipe and three discharge pipes are fixedly installed on the surface of the cover body.

[0006] The inner cavity of the cover body is a conical cavity that is smaller at the upper end and larger at the lower end. A sorting sleeve is rotatably installed in the conical cavity, and a second drive motor for driving the sorting sleeve to rotate is fixedly installed at the top of the cover body.

[0007] A number of windows are provided on the surface of the sorting sleeve, and a plurality of partition rings are fixedly installed on the inner wall of the sorting sleeve. The partition rings divide the inner wall of the sorting sleeve into three annular regions, and the three annular regions are arranged vertically. The three annular regions are communicated with each discharge pipe through the windows, and materials of different particle sizes are discharged from the discharge pipes by using airflows with different flow rates, realizing the function of sorting out various materials with different particle sizes while conveying the steel slag fine powder.

[0008] Preferably, the cover body is fixedly installed on the upper side of the grinding mechanism, and the lower end of the feeding pipe extends into the grinding mechanism. Among them, the grinding mechanism includes a base, a storage bin is fixedly installed on the upper side of the base, a rotating disk is rotatably installed inside the storage bin, a third drive motor is fixedly installed inside the base, the third drive motor drives the rotating disk to rotate horizontally, a mounting plate is rotatably installed on the base, the mounting plate can extend into the storage bin when swinging, a grinding roller is rotatably installed on the inner side of the mounting plate, a hydraulic cylinder is rotatably installed on the base, and the telescopic end of the hydraulic cylinder is movably connected to the outer side of the mounting plate. When used in combination with the grinding mechanism, the effects of feeding, grinding, and cyclic sorting are achieved.

[0009] Preferably, the bottom end of the feeding pipe extends to the upper side of the rotating disk, and a feeding inlet is formed between the lower end of the feeding pipe and the upper surface of the rotating disk. A discharge port is provided on the surface of the feeding pipe, and the lower plane of the spiral blade is in sliding contact with the upper surface of the rotating disk, and the upper end of the spiral blade extends to the upper edge of the discharge port. During the feeding process, the discharge speed of the newly added materials from the discharge port can be controlled to make the material replenishment reach a dynamic balance state.

[0010] Preferably, a toothed ring is fixedly installed at the top of the sorting sleeve, a drive gear is fixedly installed at the rotating end of the second drive motor, and the drive gear is meshed with the toothed ring for transmission. A number of baffles are fixedly installed on the lower sides of the plurality of partition rings, so that the sorting sleeve can rotate forward or backward to adjust the airflow velocity in the annular region by using the baffles.

[0011] Preferably, three diversion openings are provided on the inner wall of the conical cavity of the cover body, and the three diversion openings are respectively communicated with each discharge pipe. The outer wall of the sorting sleeve is in sliding contact with the inner wall of the conical cavity of the cover body. When the diversion opening coincides with the window, the inner cavity of the sorting sleeve is communicated with the discharge pipe through the diversion opening and the window. When the outer wall of the sorting sleeve coincides with the diversion opening, the communication channel between the inner cavity of the sorting sleeve and the discharge pipe is cut off. The sorting sleeve rotates at different speeds, which can not only control the discharging speed of the discharge pipe, but also control the airflow velocity in the annular region.

[0012] The present invention also proposes a method for using a material conveying device for preparing high-activity steel slag micropowder, comprising the following steps: S1. Add materials containing particles of different particle sizes into the feed hopper. The materials enter the cover from the discharge port and fall down. Air is injected into the cover through the air inlet pipe. The air forms a spiral upward airflow in the cover. Then, the airflow is discharged from the discharge pipe at different flow rates. Part of the materials are discharged from the discharge pipe with the airflow, and the other part of the materials fall onto the rotating disk. S2, the third driving motor drives the rotating disk to rotate, and the hydraulic cylinder drives the mounting plate to swing back and forth, so as to adjust the gap between the grinding roller and the rotating disk. The grinding roller rolls on the surface of the rotating disk to crush the material on the rotating disk; S3, the first driving motor starts, driving the spiral blade to rotate, and the material on the rotating disk enters the lower end of the conveying pipe from the feed inlet, is lifted by the spiral blade, and enters the cover from the discharge port, thus realizing the cyclic sorting of the material; S4. The three discharge pipes are connected to the three bag pulse dust collectors through pipelines. The materials are introduced into each bag pulse dust collector from the three discharge pipes along with the air flow, and powders of different particle sizes are collected by the three bag pulse dust collectors.

[0013] Preferably, in the S3 process, the first material is discharged from the discharge port from top to bottom in the conveying pipe, and the second material is discharged from the discharge port from bottom to top in the conveying pipe, and the first material and the second material meet in the discharge port area. When the discharge amount of the second material from the discharge port decreases, the discharge amount of the first material from the discharge port increases, thereby replenishing the consumption of the material circulation sorting process.

[0014] Preferably, during S4, the second drive motor is started to control the rotation speed of the sorting sleeve. When the rotation speed of the sorting sleeve increases, the flow velocity of the airflow and material in the annular area increases. At the same time, the number of overlaps between the guide port and the window increases, and the flow rate of the material introduced from the discharge pipe to each bag pulse dust collector along with the airflow increases; when the rotation speed of the sorting sleeve decreases, the flow velocity of the airflow and material in the annular area decreases. At the same time, the number of overlaps between the guide port and the window decreases, and the flow rate of the material introduced from the discharge pipe to each bag pulse dust collector along with the airflow decreases.

[0015] The present invention has the following beneficial effects: 1. The material conveying device proposed in the present invention is provided with a conveying pipe and a sorting sleeve, and the spiral blades rotating in the conveying pipe are used to lift the material. When the material is discharged and falls from the discharge port, the airflows with different flow rates are used to discharge the material of different particle sizes from each discharge pipe. While conveying the steel slag powder, the function of sorting out a variety of materials of different particle sizes is realized, and the sorting of multiple grades of materials can be completed in one feeding, which greatly improves the production efficiency.

[0016] 2. The material conveying device proposed by the present invention can be used in combination with a grinding mechanism. The feeding pipe lifts the materials on the rotating disk to a high place, and through the sorting of air flow, the materials meeting the particle size requirements are discharged from the discharge pipe and collected separately. The materials not meeting the requirements fall back onto the rotating disk for repeated grinding. This cycle continues until the particle size of the materials meets the requirements, thus achieving the effect of cyclic sorting.

[0017] 3. The material conveying device proposed by the present invention forcibly lifts the materials on the rotating disk to a high place through the feeding pipe, and then drops and sorts the materials, which can timely discharge the fine powder materials ground, avoiding the fine powder materials occupying the volume of the rotating disk and affecting the processing efficiency. Moreover, the design that both the materials for cyclic grinding and the newly added materials drop from the discharge port, and the materials for cyclic grinding are transmitted from top to bottom in the feeding pipe, can control the discharge speed of the newly added materials from the discharge port, making the material supplement amount reach a dynamic balance state, ensuring that the grinding mechanism is in an efficient working state, reducing the failure rate, and improving the production efficiency.

[0018] 4. The usage method of the material conveying device proposed by the present invention is to control the rotation speed of the first driving motor to make the spiral blade rotate at different speeds, which can not only control the feeding speed of the materials for cyclic grinding but also control the feeding speed of the new materials; by controlling the rotation of the second driving motor to make the sorting sleeve rotate at different speeds, it can not only control the discharging speed of the discharge pipe but also control the air flow velocity in the annular area, making the air flow velocity affecting the falling speed of the materials positively correlated with the discharging speed for manual control, providing conditions for the automatic control of steel slag micro-powder production. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a three-dimensional structural schematic diagram of the material conveying device proposed by the present invention; Figure 2 is a three-dimensional structural schematic diagram of the sorting sleeve proposed by the present invention; Figure 3 is a three-dimensional structural schematic diagram of the grinding mechanism proposed by the present invention; Figure 4 is a front sectional structural schematic diagram of the material conveying device proposed by the present invention Figure 1 ; Figure 5 is a front sectional structural schematic diagram of the material conveying device proposed by the present invention Figure 2 ; Figure 6 is a front sectional structural schematic diagram of the feeding pipe proposed by the present invention.

[0020] In the figure: 1 cover body, 2 material conveying pipe, 3 spiral blade, 4 feed hopper, 5 first driving motor, 6 air inlet pipe, 7 discharge pipe, 8 sorting sleeve, 9 second driving motor, 10 window, 11 partition ring, 12 annular area, 13 base, 14 silo, 15 rotating disk, 16 third driving motor, 17 mounting plate, 18 grinding roller, 19 hydraulic cylinder, 20 feed inlet, 21 discharge outlet, 22 gear ring, 23 driving gear, 24 diversion port, 25 baffle plate. Detailed implementation manner

[0021] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0022] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0023] Refer to Figures 1-6 , a material conveying device for preparing highly active steel slag micro powder, including a sorting mechanism. The sorting mechanism includes a cover body 1. Inside the cover body 1, a material conveying pipe 2 is fixedly installed. Inside the material conveying pipe 2, a spiral blade 3 is rotatably installed. At the top of the material conveying pipe 2, a feed hopper 4 and a first driving motor 5 are fixedly installed. The first driving motor 5 drives the spiral blade 3 to rotate. On the surface of the cover body 1, an air inlet pipe 6 and three discharge pipes 7 are fixedly installed.

[0024] The inner cavity of the cover body 1 is a conical cavity with a smaller upper end and a larger lower end. Inside the conical cavity, a sorting sleeve 8 is rotatably installed. At the top of the cover body 1, a second driving motor 9 for driving the sorting sleeve 8 to rotate is fixedly installed; specifically, a gear ring 22 is fixedly installed at the top of the sorting sleeve 8, and a driving gear 23 is fixedly installed at the rotating end of the second driving motor 9. The driving gear 23 is in meshing transmission with the gear ring 22.

[0025] As Figure 2 shown, several windows 10 are opened on the surface of the sorting sleeve 8. A plurality of partition rings 11 are fixedly installed on the inner wall of the sorting sleeve 8. A plurality of baffle plates 25 are fixedly installed on the lower sides of the plurality of partition rings 11. The partition rings 11 divide the inner wall of the sorting sleeve 8 into three annular areas 12. The three annular areas 12 are arranged vertically. The three annular areas 12 are communicated with the respective discharge pipes 7 through the windows 10.

[0026] Specifically, for details, see Figure 4, three diversion openings 24 are formed in the inner wall of the conical cavity of the cover body 1, and the three diversion openings 24 are respectively communicated with the respective discharge pipes 7. The outer wall of the sorting sleeve 8 is in sliding contact with the inner wall of the conical cavity of the cover body 1. When the diversion opening 24 coincides with the window 10, the inner cavity of the sorting sleeve 8 is communicated with the discharge pipe 7 through the diversion opening 24 and the window 10. When the outer wall of the sorting sleeve 8 coincides with the diversion opening 24, the communication channel between the inner cavity of the sorting sleeve 8 and the discharge pipe 7 is cut off.

[0027] In this embodiment, the cover body 1 is fixedly installed on the upper side of the grinding mechanism, and the lower end of the material conveying pipe 2 extends into the grinding mechanism.

[0028] Among them, as Figure 3 shown, the grinding mechanism includes a base 13. A material bin 14 is fixedly installed on the upper side of the base 13. The upper opening of the material bin 14 is communicated with and fixedly connected to the lower opening of the cover body 1. A rotating disk 15 is rotatably installed inside the material bin 14. A third driving motor 16 is fixedly installed inside the base 13. The third driving motor 16 drives the rotating disk 15 to rotate horizontally. A mounting plate 17 is rotatably installed on the base 13. When the mounting plate 17 swings, it can extend into the material bin 14. A grinding roller 18 is rotatably installed on the inner side of the mounting plate 17. A hydraulic cylinder 19 is rotatably installed on the base 13. The telescopic end of the hydraulic cylinder 19 is movably connected to the outer side of the mounting plate 17. The material is introduced onto the upper side of the rotating disk 15. Under the action of the centrifugal force of the rotation of the rotating disk 15, the material accumulates towards the edge of the rotating disk 15, and the material is crushed by the rolling of the grinding roller 18.

[0029] In this embodiment, the bottom end of the material conveying pipe 2 extends to the upper side of the rotating disk 15. An inlet 20 is formed between the lower end of the material conveying pipe 2 and the upper surface of the rotating disk 15. A discharge opening 21 is formed on the surface of the material conveying pipe 2. The lower plane of the spiral blade 3 is in sliding contact with the upper surface of the rotating disk 15. The upper end of the spiral blade 3 extends to the upper edge of the discharge opening 21. As Figure 6 shown, the material spirally descends along the surface of the spiral blade 3 and can be discharged from the discharge opening 21.

[0030] The present invention also proposes a usage method of the material conveying device for preparing highly active steel slag fine powder, including the following steps: S1. Add materials containing particles of different particle sizes into the feed hopper 4. The materials enter the cover body 1 from the discharge opening 21 and fall. Air is injected into the cover body 1 through the air inlet pipe 6. The air forms a spiral rising air flow in the cover body 1, and then the air flow is discharged from the discharge pipe 7 at different flow rates respectively. Part of the materials are discharged from the discharge pipe 7 along with the air flow, and the other part of the materials fall onto the rotating disk 15; As shown in Figure 5, the airflow is input into the housing 1 at a speed of V0, and the spiral rising airflow causes the air and materials in the housing 1 to move in a circular motion along each annular area 12, and then are discharged from the discharge pipe 7 at speeds of V1, V2, and V3, respectively. The spiral rising airflow is blocked by the falling materials, the separation ring 11, and the baffle 25, and the kinetic energy is gradually reduced, so that V1<V2<V3. The materials in the circular motion in the annular area 12 are affected by the centrifugal force and gravity. The materials with smaller particles are discharged from the upper discharge pipe 7 at a speed of V1, realizing the first-level separation; the materials with medium particles are discharged from the middle discharge pipe 7 at a speed of V2, realizing the second-level separation; the materials with larger particles are discharged from the lower discharge pipe 7 at a speed of V3, realizing the third-level separation; the remaining materials fall downward onto the rotating disk 15 under the action of gravity; S2, the third driving motor 16 drives the rotating disk 15 to rotate, and the hydraulic cylinder 19 drives the mounting plate 17 to swing back and forth, so as to adjust the gap between the grinding roller 18 and the rotating disk 15, and the grinding roller 18 rolls on the surface of the rotating disk 15 to crush the material on the rotating disk 15; S3, the first drive motor 5 is started, driving the spiral blade 3 to rotate, and the material on the rotating disk 15 enters the lower end of the conveying pipe 2 from the feed inlet 20, is lifted by the spiral blade 3, and enters the cover body 1 from the discharge port 21, repeating the primary, secondary, and tertiary separation of the material in the process of S1, thereby realizing the cyclic sorting of the material; It should be noted that the materials lifted by the spiral blades 3 include powders of different particle sizes after grinding, and large particles that have not been ground. S4. The three discharge pipes 7 are connected to the three bag pulse dust collectors through pipelines. The materials are introduced into each bag pulse dust collector from the three discharge pipes 7 along with the airflow. The powders of different particle sizes are collected by the three bag pulse dust collectors. The bag pulse dust collector has the function of collecting powders in the airflow and is a mature product of the prior art, which will not be elaborated here.

[0031] In the process S3, the first material is discharged from the discharge port 21 from top to bottom in the conveying pipe 2, and the second material is discharged from the discharge port 21 from bottom to top in the conveying pipe 2. The first material and the second material meet in the discharge port 21 area. Figure 6 When the discharge amount of the second material from the discharge port 21 decreases, the discharge amount of the first material from the discharge port 21 increases to replenish the consumption of the material circulation sorting process. The first material refers to the newly added material introduced into the feed pipe 2, and the second material refers to the circulated ground material introduced into the feed pipe 2.

[0032] The material on the rotating disk 15 is forcibly lifted to a high place through the feeding pipe 2, and then falls and is sorted. The fine powder after grinding can be discharged in time, avoiding the occupation of the volume of the rotating disk 15 by the fine powder, which affects the processing efficiency. Moreover, the design that the materials for cyclic grinding and the newly added materials both fall from the discharge port 21 enables the materials for cyclic grinding to be transmitted from top to bottom in the feeding pipe 2, which can control the discharge speed of the newly added materials from the discharge port 21, making the material supplement amount reach a dynamic balance state, ensuring that the grinding mechanism is in an efficient working state, reducing the failure rate, and improving the production efficiency.

[0033] In the process of S4, the second driving motor 9 starts to control the rotation speed of the sorting sleeve 8. When the rotation speed of the sorting sleeve 8 increases, the flow rates of the air flow and the material in the annular region 12 increase. At the same time, the number of times the diversion port 24 coincides with the window 10 increases, and the flow rate of the material introduced into each bag pulse dust collector from the discharge pipe 7 with the air flow increases; when the rotation speed of the sorting sleeve 8 decreases, the flow rates of the air flow and the material in the annular region 12 decrease. At the same time, the number of times the diversion port 24 coincides with the window 10 decreases, and the flow rate of the material introduced into each bag pulse dust collector from the discharge pipe 7 with the air flow decreases.

[0034] It should be noted that when the rotation speed of the sorting sleeve 8 increases or decreases, under the pushing action of the baffle 25, the speeds of the above V1, V2, and V3 can be adjusted.

[0035] The usage method of the material conveying device proposed by the present invention can control the rotation speed of the first driving motor 5 to make the spiral blade 3 rotate at different speeds, which can not only control the feeding speed of the materials for cyclic grinding, but also control the feeding speed of the new materials; by controlling the rotation of the second driving motor 9 to make the sorting sleeve 8 rotate at different speeds, it can not only control the discharging speed of the discharge pipe 7, but also control the air flow velocity in the annular region 12, making the air flow velocity affecting the falling speed of the material positively correlated with the discharging speed for manual control, providing conditions for the automatic control of steel slag micro powder production.

[0036] The material conveying device proposed by the present invention can be used in combination with a grinding mechanism. The feeding pipe 2 lifts the material on the rotating disk 15 to a high place. Through the sorting of the air flow, the materials meeting the particle size requirements are discharged from the discharge pipe 7 and collected separately. The materials not meeting the requirements fall back onto the rotating disk 15 for repeated grinding. This cycle continues until the particle size of the materials meets the requirements, thus achieving the effect of cyclic sorting.

[0037] By setting the feeding pipe 2 and the sorting sleeve 8, the spiral blade 3 rotating in the feeding pipe 2 is used to lift the material. When the material is discharged and falls from the discharge port 21, air flows with different flow rates are used to discharge materials with different particle sizes from the discharge pipe 7. While conveying the steel slag micro powder, the function of sorting out multiple different particle size grades of materials is realized, and the sorting of multi-stage materials is completed in one feeding, greatly improving the production efficiency.

[0038] As described above, it is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, making equivalent substitutions or changes, shall be covered by the protection scope of the present invention.

Claims

1. A material conveying device for preparing high-activity steel slag powder, comprising a sorting mechanism, characterized in that: The sorting mechanism comprises a cover body (1), a material conveying pipe (2) is fixedly installed inside the cover body (1), a spiral blade (3) is rotatably installed inside the material conveying pipe (2), a feed hopper (4) and a first drive motor (5) are fixedly installed at the top of the material conveying pipe (2), the first drive motor (5) drives the spiral blade (3) to rotate, and an air inlet pipe (6) and three material discharge pipes (7) are fixedly installed on the surface of the cover body (1); The inner cavity of the cover body (1) is a conical cavity with a small upper end and a large lower end, a sorting sleeve (8) is rotatably mounted in the conical cavity, and a second driving motor (9) for driving the sorting sleeve (8) to rotate is fixedly mounted at the top of the cover body (1); A plurality of windows (10) are provided on the surface of the sorting sleeve (8), and a plurality of dividing rings (11) are fixedly mounted on the inner wall of the sorting sleeve (8). The dividing rings (11) divide the inner wall of the sorting sleeve (8) into three annular areas (12). The three annular areas (12) are arranged in an upper and lower position, and the three annular areas (12) are connected to the respective discharge pipes (7) through the windows (10).

2. The material conveying device for preparing high-activity steel slag powder according to claim 1, characterized in that: The cover body (1) is fixedly mounted on the upper side of the grinding mechanism, and the lower end of the material conveying pipe (2) extends to the interior of the grinding mechanism.

3. The material conveying device for preparing high-activity steel slag powder according to claim 2, characterized in that: The grinding mechanism comprises a base (13), a material bin (14) is fixedly mounted on the upper side of the base (13), a rotating disk (15) is rotatably mounted inside the material bin (14), a third drive motor (16) is fixedly mounted inside the base (13), the third drive motor (16) drives the rotating disk (15) to rotate horizontally, a mounting plate (17) is rotatably mounted on the base (13), the mounting plate (17) can extend into the material bin (14) when swinging, a grinding roller (18) is rotatably mounted on the inner side of the mounting plate (17), and a hydraulic cylinder (19) is rotatably mounted on the base (13), the telescopic end of the hydraulic cylinder (19) being movably connected to the outer side of the mounting plate (17).

4. The material conveying device for preparing high-activity steel slag powder according to claim 3, characterized in that: The bottom end of the feed pipe (2) extends to the upper side of the rotating disk (15), a feed inlet (20) is formed between the lower end of the feed pipe (2) and the upper surface of the rotating disk (15), a discharge port (21) is provided on the surface of the feed pipe (2), the lower plane of the spiral blade (3) is in sliding contact with the upper surface of the rotating disk (15), and the upper end of the spiral blade (3) extends to the upper edge of the discharge port (21).

5. The material conveying device for preparing high-activity steel slag powder according to claim 4, characterized in that: A gear ring (22) is fixedly mounted on the top of the sorting sleeve (8), a driving gear (23) is fixedly mounted on the rotating end of the second driving motor (9), the driving gear (23) is meshed with the gear ring (22) for transmission, and a plurality of baffles (25) are fixedly mounted on the lower sides of the plurality of separation rings (11).

6. A material conveying device for preparing high-activity steel slag fine powder according to claim 5, characterized in that: The conical cavity inner wall of the cover body (1) is provided with three flow guide ports (24), the three flow guide ports (24) are respectively connected to the respective discharge pipes (7), the outer wall of the sorting sleeve (8) is in sliding contact with the conical cavity inner wall of the cover body (1), when the flow guide ports (24) overlap with the window (10), the inner cavity of the sorting sleeve (8) is connected to the discharge pipe (7) through the flow guide ports (24) and the window (10), and when the outer wall of the sorting sleeve (8) overlaps with the flow guide ports (24), the communication channel between the inner cavity of the sorting sleeve (8) and the discharge pipe (7) is cut off.

7. A method for using a material conveying device for preparing high-activity steel slag fine powder, using the material conveying device for preparing high-activity steel slag fine powder as claimed in claim 6 to prepare steel slag fine powder, characterized in that: The following steps are involved: S1. Add materials containing particles of different particle sizes into a feed hopper (4). The materials enter the housing (1) from the discharge port (21), fall down, and inject air into the housing (1) through the air inlet pipe (6). The air forms a spiral upward airflow in the housing (1). The airflow is then discharged from the discharge pipe (7) at different flow rates. A portion of the materials is discharged from the discharge pipe (7) along with the airflow, and another portion of the materials falls onto the rotating disk (15). S2, the third driving motor (16) drives the rotating disk (15) to rotate, and the hydraulic cylinder (19) drives the mounting plate (17) to swing back and forth, thereby adjusting the gap between the grinding roller (18) and the rotating disk (15), and the grinding roller (18) rolls on the surface of the rotating disk (15) to crush the material on the rotating disk (15); S3, the first drive motor (5) is started, driving the spiral blade (3) to rotate, and the material on the rotating disk (15) enters the lower end of the conveying pipe (2) through the feed inlet (20), is lifted by the spiral blade (3), and enters the cover body (1) through the discharge port (21), thereby realizing cyclic sorting of the material; S4. The three discharge pipes (7) are connected to the three bag pulse dust collectors through pipelines respectively. The materials are introduced into each bag pulse dust collector along with the air flow from the three discharge pipes (7). The powders of different particle sizes are collected by the three bag pulse dust collectors.

8. The method for using the material conveying device for preparing high-activity steel slag powder according to claim 7, characterized in that: In the S3 process, the first material is discharged from the discharge port (21) from top to bottom in the conveying pipe (2), and the second material is discharged from the discharge port (21) from bottom to top in the conveying pipe (2). The first material and the second material meet in the discharge port (21) area. When the discharge amount of the second material from the discharge port (21) decreases, the discharge amount of the first material from the discharge port (21) increases, thereby replenishing the consumption of the material circulation sorting process.

9. The method for using the material conveying device for preparing high-activity steel slag fine powder according to claim 8, characterized in that: During the S4 process, the second drive motor (9) is started to control the rotation speed of the sorting sleeve (8). When the rotation speed of the sorting sleeve (8) increases, the flow velocity of the airflow and the material in the annular region (12) increases. At the same time, the number of overlaps between the guide port (24) and the window (10) increases, and the flow rate of the material introduced from the discharge pipe (7) into each bag pulse dust collector along with the airflow increases. When the rotation speed of the sorting sleeve (8) decreases, the flow velocity of the airflow and the material in the annular region (12) decreases. At the same time, the number of overlaps between the guide port (24) and the window (10) decreases, and the flow rate of the material introduced from the discharge pipe (7) into each bag pulse dust collector along with the airflow decreases.

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