Electromagnetic iron removal device before grinding of slag micro-powder
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- YAOCHENG MATERIALS COMPREHENSIVE UTILIZATION CO LTD MALONG DISTRICT QUJING CITY
- Filing Date
- 2025-08-15
- Publication Date
- 2026-08-07
AI Technical Summary
目前的电磁除铁装置在进行除铁过程中，往往不具有多级磁吸结构，不能将矿渣中的铁清除干净，不能将铁高效去除，存在除铁不彻底的问题，除铁效果不理想，不能很好的满足市场的除铁需求；其次，装置在运行一段时间后，电磁铁表面吸附过多铁质，需要断电消磁，进而清除铁质，这一过程需要不断重复进行，影响装置运行的连续性，降低了装置的工作效率
[0011]In operation, the coarsely crushed slag is fed into the feed end of a belt conveyor. The belt conveyor carries the slag forward, passing through various iron removal mechanisms in sequence. When passing through these mechanisms, the electromagnetic drum generates magnetic force, attracting the iron in the slag to its surface. As the drum rotates, when the iron reaches the guide plate, the end of the guide plate scrapes the iron off the drum. The iron falls onto the guide plate and slides downwards under its own weight, then enters the horizontal cylinder through the opening. The auger then operates, pushing the iron out. In this manner, each iron removal mechanism sequentially adsorbs and cleans the iron in the slag. At this point, most of the iron is removed, and the remaining small amount of iron falls into the guide cylinder along with the slag through the belt conveyor discharge end. Then, it enters one of the iron removal boxes through the inclined pipe and falls onto the distribution plate. The distribution plate rotates under the drive of the motor, and in the process of rotation, it throws the slag out in all directions. The iron in the slag is attracted to the surface of the electromagnetic suction plate, resulting in iron-free slag that falls freely and is discharged from the iron removal box, thus completing the electromagnetic iron removal work before the slag powder is ground. In this invention, on the one hand, multiple iron removal mechanisms are set up, which sequentially remove iron from the slag on the belt conveyor, removing most of the iron in the slag. On the other hand, an iron removal box is used, which uses a material distribution plate to disperse the slag and throw it to the surrounding electromagnetic suction plates to further remove the remaining iron. This device is equipped with a multi-stage magnetic suction structure and uses two magnetic suction methods to perform more thorough and efficient iron removal from the slag, solving the problem of incomplete iron removal currently existing, and has a better iron removal effect, which can meet the market demand for iron removal. Secondly, this device uses two iron removal methods. One is the electromagnetic drum iron removal method, which uses a guide plate to scrape off the iron and uses an auger to remove the iron. The first method involves conveying the iron away automatically, while the second method uses electromagnetic chucks for iron removal. This method employs two iron removal boxes, with the gate valves on two inclined pipes opening and closing alternately. This allows slag to alternately enter the two boxes. In one box, the electromagnetic chuck is de-energized, causing the iron to fall due to the loss of magnetism, thus completing the iron removal process. In the other box, the electromagnetic chuck is energized, generating magnetism to attract the iron from the slag. The two boxes are used alternately, allowing for continuous feeding without machine downtime. Therefore, both methods enable automatic iron removal without shutdown, achieving online iron removal and maintaining continuous operation, thus improving slag iron removal efficiency. In summary, this invention offers the advantages of online iron removal, high efficiency, and excellent iron removal effect.
Smart Images
Figure CN224599500U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of electromagnetic iron removal technology for slag micron powder, specifically to an electromagnetic iron removal device for slag micron powder before grinding. Background Technology
[0002] Slag is a byproduct of blast furnace ironmaking. During ironmaking, iron oxide is reduced to metallic iron at high temperatures. Impurities such as silica and alumina in the iron ore react with lime to form a molten material mainly composed of silicates and aluminosilicates. After quenching, this molten material becomes a loose, porous granular substance. Slag may contain a small amount of incompletely reduced iron oxide and a very small amount of metallic iron. The presence of iron can reduce the activity of slag powder, shorten the service life of grinding discs and rollers in grinding equipment, and also affect the smooth operation of production, reducing the economic benefits of slag. To avoid these problems, it is necessary to remove the iron-containing materials from the slag.
[0003] To improve the utilization value of slag, it must be ground after coarse crushing. However, iron-containing materials entering the mill will cause wear on the mill rollers, and the iron, after grinding, will also affect the activity of the product. Therefore, it is necessary to remove iron before grinding the slag using appropriate equipment. Current electromagnetic iron removal devices often lack a multi-stage magnetic attraction structure, failing to completely remove iron from the slag and resulting in incomplete iron removal and unsatisfactory iron removal effects, which cannot adequately meet market demands. Furthermore, after a period of operation, excessive iron adsorbed on the electromagnet surface requires demagnetization and removal, a process that needs to be repeated continuously, affecting the continuity of operation and reducing the device's efficiency. Therefore, the development of an electromagnetic iron removal device for slag micron powder before grinding, capable of online iron removal, high efficiency, and effective iron removal, is objectively necessary. Utility Model Content
[0004] The purpose of this invention is to provide an electromagnetic iron removal device for slag powder before grinding that can achieve online iron removal, has high working efficiency, and good iron removal effect.
[0005] The purpose of this utility model is achieved as follows: it includes a belt conveyor and multiple iron removal mechanisms arranged sequentially along its conveying direction. The iron removal mechanisms are located above the belt conveyor and include an electromagnetic drum, a guide plate, and a cross cylinder arranged sequentially. An auger is installed inside the cross cylinder, and an opening is provided on the side wall of the cross cylinder facing the electromagnetic drum. The guide plate is inclined, with its higher end abutting against the outer cylinder of the electromagnetic drum and its lower end connected to the opening. A guide cylinder is provided below the discharge end of the belt conveyor, and two inclined tubes are provided at the lower end of the guide cylinder. Gate valves are installed on the inclined tubes, and an iron removal box is provided below the inclined tubes. A central shaft is provided inside the iron removal box, and a motor is driven to the upper end of the central shaft after it extends out of the iron removal box. A material distribution plate is provided on the central shaft, and an annular electromagnetic suction plate is provided in the iron removal box around the material distribution plate. The lower end of the inclined tube extends into the iron removal box and is located above the material distribution plate.
[0006] Furthermore, a turning mechanism is provided between two adjacent iron removal mechanisms. The turning mechanism includes a rotating shaft and a turning plate disposed on the rotating shaft.
[0007] Furthermore, a flat plate is inclinedly installed above the feed end of the belt conveyor, with the higher end of the flat plate located on one side of the feed end of the belt conveyor.
[0008] Furthermore, there are multiple loose material plates and electromagnetic chucks of the same quantity. The multiple loose material plates are arranged vertically at intervals on the central axis, and the electromagnetic chucks are located around the corresponding loose material plates. A material gathering cone is provided on the iron removal box between two adjacent electromagnetic chucks.
[0009] Furthermore, a scraper is connected to the central shaft via a connecting rod, and the outer side of the scraper contacts the upper surface of the corresponding material cone.
[0010] Furthermore, a track is provided below the iron removal box, and two storage tanks are provided on the track. The two storage tanks are located below the bottom discharge ports of the two iron removal boxes, respectively. The interior of each storage tank is divided into an iron storage chamber and a slag storage chamber by vertical plates. A drive mechanism is provided at the bottom of the storage tank to drive it to move on the track.
[0011] In operation, the coarsely crushed slag is fed into the feed end of a belt conveyor. The belt conveyor carries the slag forward, passing through various iron removal mechanisms in sequence. When passing through these mechanisms, the electromagnetic drum generates magnetic force, attracting the iron in the slag to its surface. As the drum rotates, when the iron reaches the guide plate, the end of the guide plate scrapes the iron off the drum. The iron falls onto the guide plate and slides downwards under its own weight, then enters the horizontal cylinder through the opening. The auger then operates, pushing the iron out. In this manner, each iron removal mechanism sequentially adsorbs and cleans the iron in the slag. At this point, most of the iron is removed, and the remaining small amount of iron falls into the guide cylinder along with the slag through the belt conveyor discharge end. Then, it enters one of the iron removal boxes through the inclined pipe and falls onto the distribution plate. The distribution plate rotates under the drive of the motor, and in the process of rotation, it throws the slag out in all directions. The iron in the slag is attracted to the surface of the electromagnetic suction plate, resulting in iron-free slag that falls freely and is discharged from the iron removal box, thus completing the electromagnetic iron removal work before the slag powder is ground. In this invention, on the one hand, multiple iron removal mechanisms are set up, which sequentially remove iron from the slag on the belt conveyor, removing most of the iron in the slag. On the other hand, an iron removal box is used, which uses a material distribution plate to disperse the slag and throw it to the surrounding electromagnetic suction plates to further remove the remaining iron. This device is equipped with a multi-stage magnetic suction structure and uses two magnetic suction methods to perform more thorough and efficient iron removal from the slag, solving the problem of incomplete iron removal currently existing, and has a better iron removal effect, which can meet the market demand for iron removal. Secondly, this device uses two iron removal methods. One is the electromagnetic drum iron removal method, which uses a guide plate to scrape off the iron and uses an auger to remove the iron. The first method involves conveying the iron away automatically, while the second method uses electromagnetic chucks for iron removal. This method employs two iron removal boxes, with the gate valves on two inclined pipes opening and closing alternately. This allows slag to alternately enter the two boxes. In one box, the electromagnetic chuck is de-energized, causing the iron to fall due to the loss of magnetism, thus completing the iron removal process. In the other box, the electromagnetic chuck is energized, generating magnetism to attract the iron from the slag. The two boxes are used alternately, allowing for continuous feeding without machine downtime. Therefore, both methods enable automatic iron removal without shutdown, achieving online iron removal and maintaining continuous operation, thus improving slag iron removal efficiency. In summary, this invention offers the advantages of online iron removal, high efficiency, and excellent iron removal effect. Attached Figure Description
[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2This is a top view of the belt conveyor 1 and the iron removal mechanism in this utility model. In the diagram: 1-Belt conveyor, 2-Electromagnetic roller, 3-Guide plate, 4-Horizontal cylinder, 5-Auger, 6-Guide cylinder, 7-Inclined tube, 8-Iron removal box, 9-Motor, 10-Distribution plate, 11-Electromagnetic suction plate, 12-Tilting mechanism, 13-Tilting plate, 14-Flat plate, 15-Gathering cone, 16-Scraper, 17-Railway, 18-Storage tank. Detailed Implementation
[0013] The present invention will be further described below with reference to the accompanying drawings, but this description is not intended to limit the present invention in any way. Any changes or improvements made based on the present invention shall fall within the protection scope of the present invention.
[0014] like Figures 1-2 As shown, this utility model includes a belt conveyor 1 and multiple iron removal mechanisms arranged sequentially along its conveying direction. The belt conveyor 1 is an existing belt conveyor. The iron removal mechanisms are located above the belt conveyor 1 and include an electromagnetic drum 2, a guide plate 3, and a horizontal cylinder 4 arranged sequentially. The horizontal cylinder 4 is a horizontally arranged cylinder. The electromagnetic drum 2 is existing technology and is a mechanical device that uses magnetic force to separate materials. It is usually composed of a cylinder, magnetic components, and a transmission device. The magnetic components in this device use electromagnets, and their function is to use a magnetic field to separate ferrous materials with non-magnetic materials. This device is used to separate iron from slag. Its working principle is as follows: when slag passes by, the iron is attracted by the magnetic field, adheres to the surface of the drum, and rotates with the drum. Then, the guide plate 3 scrapes the iron off. An auger 5 is installed inside the horizontal cylinder 4. The auger 5 is existing technology and generally includes a shaft and spiral blades arranged on the shaft for conveying slag. An opening is opened on the side wall of the horizontal cylinder 4 facing the electromagnetic drum 2. The guide plate 3 is inclined and guides... The higher end of the iron plate 3 rests against the outer cylinder of the electromagnetic roller 2, and the lower end is connected to the opening. A guide cylinder 6 is located below the discharge end of the belt conveyor 1. Two inclined pipes 7 are located at the lower end of the guide cylinder 6, and gate valves are installed on the inclined pipes 7. A magnetic separator 8 is located below the inclined pipes 7, and a central shaft is installed inside the magnetic separator 8. The upper end of the central shaft extends out of the magnetic separator 8 and is connected to a motor 9. A material distribution plate 10 is installed on the central shaft. An annular electromagnetic suction plate 11 is installed inside the magnetic separator 8 around the material distribution plate 10. The electromagnetic suction plate 11 has the following structure: The existing technology is circular in shape, which can be a single unit or composed of multiple arc-shaped parts. When energized, it generates magnetism, adsorbs iron in the slag, and then separates the iron from the slag, causing the slag to fall. After a period of use, when too much iron adheres to the electromagnetic suction plate 11, it will affect the iron removal efficiency of the slag. The power can be turned off, the electromagnetic suction plate 11 will be demagnetized, and the iron adsorbed on its surface will fall, thus completing the iron removal. The lower end of the inclined tube 7 extends into the iron removal box 8 and is located above the bulk material plate 10.
[0015] In operation, the coarsely crushed slag is fed into the feed end of the belt conveyor 1. The belt conveyor 1 drives the slag forward, passing through various iron removal mechanisms in sequence. When passing through the iron removal mechanism, the electromagnetic drum 2 generates magnetic force, and the iron in the slag is attracted to the surface of the electromagnetic drum 2. Then, as the electromagnetic drum 2 rotates, when the iron rotates to the position of the guide plate 3, the end of the guide plate 3 scrapes the iron off the electromagnetic drum 2. The iron falls onto the guide plate 3 and slides downward under its own gravity, then enters the horizontal cylinder 4 through the opening. The auger 5 operates, and the iron is pushed out by the auger 5. In this manner, each iron removal mechanism sequentially adsorbs and cleans the iron in the slag. At this point, most of the iron is removed, and the remaining small amount of iron falls into the guide cylinder 6 along with the slag through the discharge end of the belt conveyor 1. Then, it enters one of the iron removal boxes 8 through the inclined pipe 7 and falls onto the material distribution plate 10. The material distribution plate 10 rotates under the drive of the motor 9 and throws the slag outwards during the rotation. The iron in the slag is attracted to the surface of the electromagnetic suction plate 11 by the suction force, resulting in iron-free slag that falls freely and is discharged from the iron removal box 8, thus completing the electromagnetic iron removal work before the slag powder is ground.
[0016] In this invention, on the one hand, multiple iron removal mechanisms are set up, which sequentially remove iron from the slag on the belt conveyor 1, removing most of the iron in the slag. On the other hand, an iron removal box 8 is used, which uses a material distribution plate 10 to disperse the slag and throw it to the surrounding electromagnetic suction plates 11 to further remove the remaining iron. This device is equipped with a multi-stage magnetic suction structure, using two magnetic suction methods in combination, which can perform more thorough and efficient iron removal treatment on the slag, solving the current problem of incomplete iron removal, and has a better iron removal effect, which can meet the market demand for iron removal. Secondly, this device uses two iron removal methods. One is the iron removal method of the electromagnetic drum 2, which uses the guide iron plate 3 to scrape off the iron and uses a winch. The first method involves the automatic conveying of iron away by the slag removal machine. The second method uses an electromagnetic chuck 11 to remove iron. This method involves two iron removal boxes 8, which alternately open and close the gate valves on the two inclined pipes 7, allowing the slag to enter the two iron removal boxes alternately. In one iron removal box 8, the electromagnetic chuck 11 is de-energized and demagnetized, causing the iron to fall due to the loss of magnetic force, thus completing the iron removal. In the other iron removal box 8, the electromagnetic chuck 11 is energized to generate magnetic force, attracting the iron in the slag. The two iron removal boxes 8 alternately pass through the slag and clean the iron alternately. During the alternating use, continuous feeding is possible without stopping the machine. It can be seen that in the above two iron removal methods, the iron removal work can be carried out automatically without stopping the machine, realizing online iron removal, which can better maintain the continuity of the device operation and improve the iron removal efficiency of the slag.
[0017] A turning mechanism 12 is provided between two adjacent iron removal mechanisms. The turning mechanism 12 includes a rotating shaft and a turning plate 13 set on the rotating shaft. The turning mechanism 12 is used to turn the slag on the belt conveyor 1. During operation, the existing drive device drives the rotating shaft to rotate, and the rotating shaft drives the turning plate 13 to rotate. During the rotation, the turning plate 13 can turn the slag, thereby turning the slag located in the lower layer to the upper layer, so that the electromagnetic roller 2 can adsorb the iron in it.
[0018] A flat plate 14 is inclinedly installed above the feed end of the belt conveyor 1. The higher end of the flat plate 14 is located on one side of the feed end of the belt conveyor 1. According to actual use, when slag is poured onto the belt conveyor 1, the slag often falls in the middle of the belt. This way of dropping slag will cause the slag to accumulate in the middle of the belt, while there is less or no slag on both sides of the belt, forming an uneven accumulation distribution shape with the middle of the belt being higher and the sides being lower. This shape leads to poor iron removal effect of the bottom layer in the middle when the iron removal mechanism removes iron. To solve this problem, the flat plate 14 is set up to move the upper layer of slag in the middle of the belt to both sides, so that the accumulation thickness of slag on each part of the belt is relatively uniform, thereby improving the iron removal effect of the subsequent iron removal mechanism.
[0019] There are multiple and identical loose material plates 10 and electromagnetic chucks 11. The loose material plates 10 are arranged vertically at intervals along a central axis, and the electromagnetic chucks 11 are located around the corresponding loose material plates 10. A material-gathering cone 15 is provided on the iron removal box 8 between adjacent electromagnetic chucks 11. In this invention, the loose material plates 10 and the surrounding electromagnetic chucks 11 form a combination. The loose material plates 10 disperse the slag and throw it onto the electromagnetic chucks 11, which then adsorb the iron in the slag. The slag continuously falls within the iron removal box 8, passing through various iron removal combinations. Each time it passes through a combination, the slag undergoes iron removal once. Multiple combinations allow for multiple iron removal processes, thereby improving the iron removal effect and thoroughly removing the iron. The function of the material-gathering cone 15 is to gather the falling, dispersed slag, allowing it to fall onto the loose material plates 10, preventing the slag from falling directly and reducing the iron removal effect.
[0020] A scraper 16 is connected to the central shaft via a connecting rod. The outer side of the scraper 16 contacts the upper surface of the corresponding material-collecting cone 15. The scraper 16 rotates with the central shaft under the drive of the connecting rod. During the rotation, on the one hand, it can agitate the slag on the material-collecting cone 15 to prevent the slag from clumping and promote the slag to fall smoothly. On the other hand, the scraper 16 scrapes the surface of the material-collecting cone 15 to scrape off the slag adhering to the surface of the material-collecting cone 15, preventing blockage caused by the slag adhering to the material-collecting cone 15.
[0021] Below the iron removal box 8, there is a track 17, on which two storage tanks 18 are arranged. The two storage tanks 18 are located below the bottom discharge ports of the two iron removal boxes 8 respectively. The interior of each storage tank 18 is divided into an iron storage chamber and a slag storage chamber by a vertical plate. The bottom of the storage tank 18 is provided with a drive mechanism to drive it to move on the track 17. The drive mechanism is existing technology and is used to drive the storage tank 18 to move on the track 17. For example, rollers can be set at the bottom of the storage tank 18, and then the drive mechanism can be used to drive the rollers to rotate, thereby driving the storage tank 18 to move on the track 17. Considering that when this utility model is running, the two iron removal boxes 8 remove iron alternately, and the same iron removal box 8 removes iron and discharges iron alternately, during operation, slag and iron will be discharged from the bottom of the iron removal box 8. When discharging slag, the storage tank 18 is moved so that the slag storage chamber of the storage tank 18 is below the iron removal box 8. When discharging iron, the iron storage chamber of the storage tank 18 is moved so that it is below the iron removal box 8.
Claims
1. An electromagnetic iron removal device for slag powder before grinding, comprising a belt conveyor (1) and a plurality of iron removal mechanisms arranged sequentially along its conveying direction, characterized in that: The iron removal mechanism is located above the belt conveyor (1). The iron removal mechanism includes an electromagnetic drum (2), a guide plate (3), and a cross cylinder (4) arranged in sequence. An auger (5) is installed inside the cross cylinder (4). An opening is provided on the side wall of the cross cylinder (4) facing the electromagnetic drum (2). The guide plate (3) is inclined. The higher end of the guide plate (3) abuts against the outer cylinder of the electromagnetic drum (2), and the lower end is connected to the opening. A guide cylinder (6) is provided below the discharge end of the belt conveyor (1). Two inclined tubes (7) are provided at the lower end of the tube. A gate valve is provided on the inclined tube (7). An iron removal box (8) is provided below the inclined tube (7). A central shaft is provided inside the iron removal box (8). The upper end of the central shaft extends out of the iron removal box (8) and is connected to a motor (9). A material distribution plate (10) is provided on the central shaft. An annular electromagnetic suction plate (11) is provided inside the iron removal box (8) around the material distribution plate (10). The lower end of the inclined tube (7) extends into the iron removal box (8) and is located above the material distribution plate (10).
2. The electromagnetic iron removal device before slag powder grinding according to claim 1, characterized in that: A turning mechanism (12) is provided between two adjacent iron removal mechanisms. The turning mechanism (12) includes a rotating shaft and a turning plate (13) provided on the rotating shaft.
3. The electromagnetic iron removal device before slag powder grinding according to claim 1, characterized in that: A flat plate (14) is inclinedly arranged above the feed end of the belt conveyor (1), and the higher end of the flat plate (14) is located on one side of the feed end of the belt conveyor (1).
4. The electromagnetic iron removal device before slag powder grinding according to claim 1, characterized in that: The number of the loose material plates (10) and the electromagnetic suction plates (11) are both multiple and the same. The multiple loose material plates (10) are arranged vertically and horizontally on the central axis. The electromagnetic suction plates (11) are located around the corresponding loose material plates (10). The iron removal box (8) between two adjacent electromagnetic suction plates (11) is equipped with a material gathering cone (15).
5. The electromagnetic iron removal device before slag powder grinding according to claim 4, characterized in that: A scraper (16) is connected to the central shaft via a connecting rod, and the outer side of the scraper (16) contacts the upper surface of the corresponding material cone (15).
6. The electromagnetic iron removal device before slag powder grinding according to claim 1, characterized in that: Below the iron removal box (8) is a track (17), and two storage tanks (18) are provided on the track (17). The two storage tanks (18) are located below the bottom discharge ports of the two iron removal boxes (8). The interior of each storage tank (18) is divided into an iron storage chamber and a slag storage chamber by a vertical plate. The bottom of the storage tank (18) is provided with a drive mechanism to drive it to move on the track (17).