Steel slag belt iron removal device

Abstract

The utility model relates to the technical field of slag recovery, in particular to a steel slag belt iron removal device. The utility model provides a steel slag belt deironing device. The steel slag belt deironing device comprises a belt deironing mechanism and a magnetic attraction mechanism, the belt iron removal mechanism comprises an iron removal belt; the conveying direction of the iron removing belt is intersected with the conveying direction of a belt conveyor positioned at a feeding hole of the ball mill; the magnetic attraction mechanism is arranged in the inner space defined by the iron removal belt and arranged in the conveying direction of the iron removal belt, and the projection, facing the belt conveyor, of the magnetic attraction mechanism falls into the lower half portion of the iron removal belt so that the lower half portion of the iron removal belt can form a magnetic attraction area and a discharging area. According to the steel slag belt iron removal device, iron blocks in mixed slag can be efficiently separated from the mixed slag, the mode of manually hooking the iron blocks for separation is not needed, the device does not depend on the working experience of workers, the working efficiency is greatly improved, and the labor burden of the workers is reduced.

Description

Technical Field

[0001] This utility model relates to the field of slag recycling technology, specifically to a steel slag belt iron removal device. Background Technology

[0002] The AOD (argon-oxygen decarburization) process for stainless steel production generates oxidizing and reducing slags. These slags contain ferroalloys (in block, granular, and strip forms) that are poured out with the slag. These ferroalloys have high recycling value. During the process of the mixed slag entering the ball mill, to reduce the likelihood of large iron blocks entering the mill, a worker is positioned at an appropriate location on the belt conveyor to manually hook out some of the large iron blocks.

[0003] However, using manual hooking of iron blocks has the following problems:

[0004] 1. The iron hooker only hooks iron blocks that are visible in the mixed slag on the belt conveyor, requiring extensive experience, and can generally only hook out iron blocks larger than 30mm; 2. Long working hours can lead to worker fatigue and low work efficiency; 3. Iron blocks buried in the slag cannot be seen by workers and therefore cannot be hooked out; 4. Iron blocks larger than 10mm in diameter entering the ball mill increase the difficulty and cost of ductile iron production and can easily damage the ductile iron machine. Utility Model Content

[0005] (I) The problem to be solved by this utility model is that the method of manually hooking iron blocks to separate iron blocks from the mixed slag on the belt conveyor is inefficient, requires workers to have rich work experience, and is prone to damage to the ductile iron machine equipment.

[0006] (II) Technical Solution

[0007] A steel slag belt iron removal device includes a belt iron removal mechanism and a magnetic attraction mechanism; the belt iron removal mechanism includes an iron removal belt; the conveying direction of the iron removal belt intersects with the conveying direction of the belt conveyor located at the feed inlet of the ball mill;

[0008] The magnetic attraction mechanism is disposed in the internal space enclosed by the iron removal belt and arranged along the conveying direction of the iron removal belt. The projection of the magnetic attraction mechanism toward the belt conveyor falls into the lower half of the iron removal belt, so as to form a magnetic attraction area and a material dropping area in the lower half of the iron removal belt. The magnetic attraction area is located directly above the belt conveyor and is used to attract iron blocks on the belt conveyor so that the iron blocks are attached to the iron removal belt. The material dropping area is located on the outside of the belt conveyor.

[0009] According to one embodiment of the present invention, the magnetic attraction mechanism is a magnet block.

[0010] According to one embodiment of the present invention, the magnetic attraction mechanism is a magnetic switch.

[0011] According to one embodiment of the present invention, the belt-driven iron removal mechanism includes a fixed frame, a driving pulley, a driven pulley, a driving device, and at least one guide roller. The driving pulley and the driven pulley are rotatably mounted on the bottom of the fixed frame, and the guide roller is rotatably mounted on the top of the fixed frame. The iron removal belt is connected between the driving pulley, the driven pulley, and the guide roller. The driving device is used to drive the driving pulley to rotate around its axis. The portion of the iron removal belt located between the driving pulley and the driven pulley constitutes the lower half of the iron removal belt.

[0012] According to one embodiment of the present invention, the driving device includes a motor, a drive belt, a first pulley, and a second pulley. The first pulley is rotatably mounted on the top of the fixed frame, and the second pulley is rotatably mounted on the bottom of the fixed frame. The drive belt is connected between the first pulley and the second pulley. The second pulley and the driving pulley are connected by a connecting shaft. The output end of the motor is fixedly connected to the first pulley.

[0013] According to one embodiment of the present invention, the steel slag belt iron removal device includes a support assembly that spans the belt conveyor, and the belt iron removal mechanism is mounted on the support assembly.

[0014] According to one embodiment of the present invention, the bracket assembly includes a bracket, and a fixing seat is provided at each of the four top corners of the fixing frame. Each fixing seat is connected to the top of the bracket by a sling.

[0015] According to one embodiment of the present invention, the steel slag conveyor belt iron removal device includes a receiving box, which is located directly below the material drop area and is used to receive iron blocks.

[0016] According to one embodiment of the present invention, a baffle is installed on the bracket, the baffle is located above the receiving box, the baffle includes a first plate and a second plate that are perpendicular to each other, the first plate is located on the side of the belt iron removal mechanism away from the belt conveyor, and the second plate is parallel to the belt iron removal mechanism, the first plate is used to block iron blocks thrown down by the iron removal belt.

[0017] According to one embodiment of the present invention, a plurality of magnet blocks are provided, and the plurality of magnet blocks are arranged along the width direction of the iron removal belt.

[0018] The beneficial effects of this utility model are:

[0019] This utility model provides a steel slag belt iron removal device, including a belt iron removal mechanism and a magnetic attraction mechanism; the belt iron removal mechanism includes an iron removal belt; the conveying direction of the iron removal belt intersects with the conveying direction of the belt conveyor located at the feed inlet of the ball mill; the magnetic attraction mechanism is set in the internal space enclosed by the iron removal belt and arranged along the conveying direction of the iron removal belt, the projection of the magnetic attraction mechanism toward the belt conveyor direction falls into the lower half of the iron removal belt, so as to form a magnetic attraction area and a material dropping area in the lower half of the iron removal belt. The magnetic attraction area is located directly above the belt conveyor and is used to attract iron blocks on the belt conveyor so that the iron blocks are attached to the iron removal belt, and the material dropping area is located on the outside of the belt conveyor.

[0020] During iron removal, the belt iron removal mechanism is activated. As the belt conveyor at the ball mill feed inlet transports the mixed slag, when an iron block moves with the belt conveyor to the magnetic attraction zone below the iron removal belt, the iron block is attracted to the iron removal belt and moves with the rotation of the iron removal belt. When the iron block moves to the discharge zone, the attraction force of the magnetic attraction mechanism on the iron block in the discharge zone weakens, so the iron block attached to the iron removal belt falls off naturally.

[0021] This method efficiently separates iron blocks from the mixed slag without the need for manual hooking, thus reducing reliance on worker experience, significantly improving work efficiency, reducing worker workload, and preventing iron blocks larger than 10mm in diameter from entering the ball mill. This reduces the difficulty and cost of ball milling and minimizes the risk of damage to the ball mill. Attached Figure Description

[0022] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0023] Figure 1 A schematic diagram provided for an embodiment of this utility model.

[0024] Icons: 1. Bracket; 2. Fixing frame; 201. Fixing seat; 3. Iron removal belt; 4. Drive pulley; 5. Protective shell; 6. Motor; 7. Guide roller; 8. Sling; 10. Baffle; 11. Receiving box; 12. Magnet block. Detailed Implementation

[0025] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0026] like Figure 1 As shown, one embodiment of this utility model provides a steel slag belt iron removal device, including a belt iron removal mechanism and a magnetic attraction mechanism; the belt iron removal mechanism includes an iron removal belt 3; the conveying direction of the iron removal belt 3 intersects with the conveying direction of the belt conveyor located at the feed inlet of the ball mill;

[0027] The magnetic attraction mechanism is set in the internal space enclosed by the iron removal belt 3 and arranged along the conveying direction of the iron removal belt 3. The projection of the magnetic attraction mechanism toward the belt conveyor falls into the lower half of the iron removal belt 3, so as to form a magnetic attraction area and a material dropping area in the lower half of the iron removal belt 3. The magnetic attraction area is located directly above the belt conveyor and is used to attract iron blocks on the belt conveyor so that the iron blocks are attached to the iron removal belt 3. The material dropping area is located on the outside of the belt conveyor.

[0028] It should be noted that the belt conveyor at the ball mill inlet is inclined, meaning that the end of the belt conveyor closest to the ball mill inlet is higher than the other end. In this embodiment, the belt-mounted iron removal mechanism is suspended above the belt conveyor by bracket 1, positioned 200mm directly above the conveyor belt, with the lower half of the iron removal belt 3 parallel to the conveyor belt. Furthermore, the conveying direction of the iron removal belt 3 intersects with the conveying direction of the belt conveyor located at the ball mill inlet.

[0029] During iron removal, the belt-driven iron removal mechanism is activated. As the belt conveyor at the ball mill inlet transports the mixed slag, when iron blocks move with the conveyor to the magnetic attraction zone below the iron removal belt 3, they are attracted to the belt and move with its rotation. When the iron blocks reach the discharge zone, the magnetic attraction weakens, causing them to fall off. This efficiently separates iron blocks from the mixed slag without requiring manual hooking, reducing worker experience, significantly improving efficiency, reducing labor burden, and preventing iron blocks larger than 10mm from entering the ball mill. This lowers the difficulty and cost of ball milling and minimizes damage.

[0030] As a preferred embodiment, Figure 1The direction perpendicular to the paper plane is named the front-back direction. The belt iron removal mechanism includes a fixed frame 2, a driving pulley 4, a driven pulley, a drive device, and multiple guide rollers 7. The driving pulley 4 and the driven pulley are rotatably mounted on the bottom of the fixed frame 2, and the driving pulley 4 and the driven pulley are arranged in a left-right arrangement.

[0031] Multiple mounting seats are installed on the front and rear sides of the top of the fixed frame 2. Guide rollers 7 are rotatably mounted between two opposing mounting seats along the front-rear direction of the fixed frame 2. The iron removal belt 3 is connected to the driving pulley 4, the driven pulley, and the guide rollers 7. The drive device drives the driving pulley 4 to rotate around its axis, thereby rotating the entire iron removal belt 3. It should be noted that... Figure 1 The portion of the iron-removing belt 3 located between the driving pulley 4 and the driven pulley constitutes the lower half of the iron-removing belt 3. The magnetic attraction mechanism is a magnet block 12, which is elongated and fixed to the lower surface of the fixing frame 2. The length direction of the magnet block 12 is the same as the conveying direction of the iron-removing belt 3. The portion of the iron-removing belt 3 located between the driving pulley 4 and the driven pulley spans the belt conveyor. The length of this portion of the iron-removing belt 3 is greater than the length of the magnet block 12, which is also greater than the width of the belt conveyor. However, the length of the magnet block 12 is less than the length of the portion of the iron-removing belt 3 located between the driving pulley 4 and the driven pulley. Specifically, the magnetic attraction area formed by the magnet 12 in the lower half of the iron removal belt 3 only occupies about 2 / 3 of the area of ​​the lower half of the iron removal belt 3. The remaining 1 / 3 of the lower half of the iron removal belt 3 (i.e. the material drop area) is located on the outside of the belt conveyor. Since there is no magnet 12 directly above this area, when the iron block attracted on the iron removal belt 3 moves into this area, the iron block will naturally fall from the material drop area.

[0032] In this embodiment, it should be emphasized that the entire belt iron removal mechanism is arranged at an angle above the belt conveyor at the ball mill feed inlet, and the lower half of the iron removal belt 3 of the belt iron removal mechanism is parallel to the belt conveyor. This can maximize the adsorption effect of the magnet block 12.

[0033] In addition, it should be noted that a tensioning wheel can be installed on this belt iron removal mechanism to tension the iron removal belt 3. However, the tensioning wheel needs to be installed above the fixed frame 2 and the iron removal belt 3 is tensioned from above the fixed frame 2 to ensure that the part of the iron removal belt 3 located between the driving pulley 4 and the driven pulley is as flat as possible.

[0034] As an optional embodiment, the magnetic attraction mechanism is a magnetic switch, such as using a magnetic base. It is magnetic when the magnetic base is open and non-magnetic when the magnetic base switch is closed.

[0035] In this embodiment, the drive device includes a motor 6, a drive belt, a first pulley, a second pulley, and a protective housing 5. The first pulley is rotatably mounted on a mounting base at the top of the fixed frame 2, and the second pulley is rotatably mounted on a mounting base at the bottom of the fixed frame 2. The second pulley and the drive pulley 4 are coaxially arranged. The drive belt drives between the first pulley and the second pulley. The second pulley and the drive pulley 4 are connected by a connecting shaft. The motor 6 is mounted on the top of the fixed frame 2, and the output end of the motor 6 is fixedly connected to the first pulley. The first pulley, the second pulley, and the drive belt are covered by the protective housing 5 to protect them.

[0036] The first pulley is driven to rotate by the motor 6. Since the drive belt is connected between the first pulley and the second pulley, it can drive the second pulley to rotate around its own axis. Since the second pulley and the drive pulley 4 are connected by a connecting shaft, the drive pulley 4 can be driven to rotate, thereby driving the iron removal belt 3 to rotate.

[0037] It should be noted that there is no specific limit to the number of magnet blocks 12, and they can be set reasonably according to the actual situation. When multiple magnet blocks 12 are set, it is necessary to ensure that the multiple magnet blocks 12 are arranged along the width direction of the iron removal belt 3.

[0038] As a preferred embodiment, such as Figure 1 As shown, the steel slag belt conveyor for iron removal includes a support assembly, which includes a support 1. The support 1 includes two portal frames and multiple connecting rods for connecting the two portal frames. The belt conveyor at the ductile iron mill inlet passes through the portal frames. Furthermore, a fixed seat 201 is provided at each of the four corners of the top of the fixed frame 2, and each fixed seat 201 is connected to the top of the support 1 by a sling 8. Specifically, the two slings located behind the fixed frame 2 are the first slings, and the two slings 8 located in front of the fixed frame 2 (i.e.,...) Figure 1 The two slings (8) seen in the image are the second slings. One end of each of the two first slings is fixed to... Figure 1 On a portal frame at the middle and rear, one end of each of the two second slings is fixed to a location located Figure 1 On a gantry frame in front.

[0039] When actually hoisting the belt iron removal mechanism, the length of the two first slings at the rear is shorter than the length of the two second slings at the front, so that the entire belt iron removal mechanism is in an inclined state, ensuring that the lower half of the iron removal belt 3 is parallel to the belt conveyor.

[0040] As a preferred embodiment, such as Figure 1 A receiving box 11 is set below the dropping area of ​​the belt iron removal mechanism to receive the iron blocks falling from the dropping area.

[0041] Considering that the iron blocks adsorbed on the lower half of the iron removal belt 3 possess a certain kinetic energy as the belt rotates, when the iron blocks suddenly move to the discharge area, they will be thrown away by the belt 3, preventing them from easily falling into the receiving box 11. Therefore, as Figure 1 As shown, a baffle 10 is installed on the support 1 above the receiving box 11. The baffle 10 includes a first plate and a second plate that are connected and perpendicular to each other. The first plate is located on the left side of the iron removal belt 3, that is, the side closer to the driven pulley. The second plate is parallel to the belt conveyor mechanism. In this way, the iron blocks thrown out by the lower half of the iron removal belt 3 will not fly out due to the obstruction of the first plate of the baffle 10, and the iron blocks that hit the first plate will naturally fall into the receiving box 11. This facilitates the collection of iron blocks, improves the collection efficiency, and the baffle 10 can prevent iron blocks from injuring people, ensuring the safety of the entire device.

[0042] The working process of separating iron blocks from mixed slag using this steel slag belt iron removal device is as follows:

[0043] Using sling 8, the belt-mounted iron removal mechanism is tilted and hoisted onto the support 1, ensuring that the lower half of the iron removal belt 3 is parallel to the belt conveyor. Then, the motor 6 is turned on. Subsequently, the belt conveyor can be turned on to transport the mixed slag to the ball mill. When the iron blocks in the mixed slag move directly below the iron removal belt 3, the iron blocks are attracted by the magnet 12 and adhere to the lower half of the iron removal belt 3. As the iron removal belt 3 rotates, the iron blocks attached to the iron removal belt 3 gradually move from the magnetic attraction area to the discharge area. When the iron blocks move to the discharge area, due to the small magnetic force of the magnet 12, the iron blocks are naturally thrown out by the iron removal belt 3 and fall into the receiving box 11.

[0044] In summary, this steel slag belt conveyor iron removal device has the following advantages: First, the magnet 12 is permanent magnet, ensuring it remains in continuous operation. Second, it can attract iron blocks smaller than 30mm. Third, the iron removal efficiency is significantly improved; the iron removal capacity of manual operation is 310 kg / hour, while that of this steel slag belt conveyor is 625 kg / hour, doubling the removal capacity. Fourth, due to the increased iron removal capacity, the belt conveyor can be sped up, thereby increasing the processing capacity of mixed slag. Fifth, the frequency of steel ball discharge from the ball mill increases from once every 20 days to once every 3 months, and the replacement of ball mill liners changes from once a month to once every six months.

[0045] In the description of this utility model, it should be noted that the terms "upper" and "lower," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0046] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. Furthermore, in the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0047] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A steel slag conveyor belt iron removal device, characterized in that, It includes a belt-driven iron removal mechanism and a magnetic attraction mechanism; the belt-driven iron removal mechanism includes an iron removal belt (3); the conveying direction of the iron removal belt (3) intersects with the conveying direction of the belt conveyor located at the feed inlet of the ball mill; The magnetic attraction mechanism is disposed in the internal space enclosed by the iron removal belt (3) and arranged along the conveying direction of the iron removal belt (3). The projection of the magnetic attraction mechanism toward the belt conveyor falls into the lower half of the iron removal belt (3) to form a magnetic attraction area and a material dropping area in the lower half of the iron removal belt (3). The magnetic attraction area is located directly above the belt conveyor and is used to attract iron blocks on the belt conveyor so that the iron blocks are attached to the iron removal belt (3). The material dropping area is located on the outside of the belt conveyor.

2. The steel slag conveyor belt iron removal device according to claim 1, characterized in that, The magnetic attraction mechanism is a magnet block (12).

3. The steel slag belt iron removal device according to claim 1, characterized in that, The magnetic attraction mechanism is a magnetic switch.

4. The steel slag conveyor belt iron removal device according to claim 2, characterized in that, The belt-driven iron removal mechanism includes a fixed frame (2), a driving pulley (4), a driven pulley, a drive device, and at least one guide roller (7). The driving pulley (4) and the driven pulley are rotatably mounted on the bottom of the fixed frame (2), and the guide roller (7) is rotatably mounted on the top of the fixed frame (2). The iron removal belt (3) is driven between the driving pulley (4), the driven pulley, and the guide roller (7). The drive device is used to drive the driving pulley (4) to rotate around its axis. The portion of the iron removal belt (3) located between the driving pulley (4) and the driven pulley constitutes the lower half of the iron removal belt (3).

5. A steel slag conveyor belt iron removal device according to claim 4, characterized in that, The driving device includes a motor (6), a drive belt, a first pulley and a second pulley. The first pulley is rotatably mounted on the top of the fixed frame (2), and the second pulley is rotatably mounted on the bottom of the fixed frame (2). The drive belt is connected between the first pulley and the second pulley. The second pulley and the driving pulley (4) are connected by a connecting shaft. The output end of the motor (6) is fixedly connected to the first pulley.

6. The steel slag belt iron removal device according to claim 5, characterized in that, The steel slag belt iron removal device includes a support assembly that spans the belt conveyor, and the belt iron removal mechanism is mounted on the support assembly.

7. A steel slag conveyor belt iron removal device according to claim 6, characterized in that, The support assembly includes a support (1), and a fixing seat (201) is provided at each of the four top corners of the fixing frame (2). Each fixing seat (201) is connected to the top of the support (1) by a sling (8).

8. A steel slag conveyor belt iron removal device according to claim 7, characterized in that, The steel slag conveyor belt iron removal device includes a receiving box (11), which is located directly below the material drop area and is used to receive iron blocks.

9. A steel slag conveyor belt iron removal device according to claim 8, characterized in that, A baffle (10) is installed on the bracket (1). The baffle (10) is located above the receiving box (11). The baffle (10) includes a first plate and a second plate that are perpendicular to each other. The first plate is located on the side of the belt iron removal mechanism away from the belt conveyor. The second plate is parallel to the belt iron removal mechanism. The first plate is used to block iron blocks that are thrown down by the iron removal belt (3).

10. A steel slag belt iron removal device according to claim 2, characterized in that, Multiple magnet blocks (12) are provided, and the multiple magnet blocks (12) are arranged along the width direction of the iron removal belt (3).

Images