Steel slag grinding and grading device

Abstract

The utility model discloses a steel slag grinding and grading device which comprises a ball mill main body and a feeding mechanism, a magnetic separation mechanism is arranged at the upper end of the feeding mechanism, a material guide mechanism matched with the magnetic separation mechanism is arranged at the lower end of the feeding mechanism, and the magnetic separation mechanism comprises a support, a magnet, a second motor and a scraper. The magnet and the second motor are fixedly installed on the support, the scraper is fixedly installed on an output shaft of the second motor, the second motor drives the scraper to rotate to scrape and sweep the lower end face of the magnet, the material guiding mechanism comprises a first material guiding sliding groove and a second material guiding sliding groove which are opposite in direction, and a filter screen is arranged on the first material guiding sliding groove. The second guide chute is positioned at the lower end of the filter screen. The device has the advantages of being reasonable in structure, high in automation degree, good in magnetic separation efficiency and capable of achieving automatic stripping and shunting of iron blocks, and the problems that in the prior art, iron blocks enter a ball mill easily, and consequently equipment abrasion, material blocking and resource waste are caused are solved.

Description

A steel slag grinding and classifying device Technical Field

[0001] This utility model relates to the field of ball mill technology, specifically to a steel slag grinding and grading device. Background Technology

[0002] Steel slag is a byproduct of steelmaking, containing a certain amount of metallic iron and oxides, and has high recycling value. With the rapid development of the steel industry, steel slag production has increased year by year, making efficient resource utilization a crucial issue for the metallurgical industry. Steel slag grinding is a key step in realizing its resource utilization; by crushing and grinding steel slag into fine powder, it can be used in cement admixtures, road construction materials, and other fields.

[0003] In existing steel slag grinding systems, ball mills are typically used to crush steel slag. However, because steel slag contains a large number of large metallic iron impurities (such as incompletely separated iron blocks), if these iron blocks directly enter the ball mill, they will not only occupy the effective grinding space and affect grinding efficiency, but may also aggravate equipment wear due to their high hardness, and even cause operational failures such as material blockage. In severe cases, this can lead to equipment shutdown for maintenance, affecting production continuity. In addition, these iron blocks themselves have recycling value. If they enter the grinding process directly without screening, it will result in the waste of recyclable resources. Therefore, a steel slag grinding and classification device is needed to solve the above problems. Summary of the Invention

[0004] The purpose of this invention is to provide a steel slag grinding and grading device, which has the advantages of reasonable structure, high degree of automation, good magnetic separation efficiency, and the ability to automatically peel off and divert iron blocks. It solves the problems of iron blocks easily entering the ball mill, causing equipment wear, material blockage and resource waste in the prior art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a steel slag grinding and grading device, comprising a ball mill body and a feeding mechanism, wherein a magnetic separation mechanism is provided at the upper end of the feeding mechanism and a material guiding mechanism cooperating with the magnetic separation mechanism is provided at the lower end of the feeding mechanism;

[0006] The magnetic separation mechanism includes a support, a magnet, a second motor, and a scraper. The magnet and the second motor are fixedly mounted on the support, and the scraper is fixedly mounted on the output shaft of the second motor. The second motor drives the scraper to rotate so that the lower end face of the magnet is scraped. The material guiding mechanism includes a first material guiding chute and a second material guiding chute facing opposite directions. A filter screen is provided on the first material guiding chute, and the second material guiding chute is located at the lower end of the filter screen.

[0007] In a preferred embodiment of the steel slag grinding and grading device of this utility model, the lower end face of the magnet is flush with the lower top end face of the support, and the support is made of non-magnetic material.

[0008] As a preferred embodiment of the steel slag grinding and grading device of this utility model, the scraper includes a rotating shaft, scraping blades and a scraper plate. The scraping blades are evenly installed on the side end face of the rotating shaft. A third sliding groove is provided on the upper end face of the scraping blades. The scraper plate is installed in the third sliding groove and is slidably connected to the scraping blades. The scraper plate is made of magnetic material.

[0009] In a preferred embodiment of the steel slag grinding and grading device of this utility model, the top edge of the third chute is provided with a second limiting flange, and the bottom edge of the scraper is provided with a first limiting flange.

[0010] As a preferred embodiment of the steel slag grinding and grading device of this utility model, the upper end face of the scraper is provided with a hidden groove, and a roller that is rotatably connected to the scraper is provided in the hidden groove.

[0011] As a preferred embodiment of the steel slag grinding and grading device of this utility model, the feeding mechanism includes a feeding frame, a conveyor belt, a feeding hopper, a discharging hopper, and a feeding hopper. The conveyor belt is installed on the feeding frame, the feeding hopper is located at the bottom of the feeding frame, the discharging hopper and the feeding hopper are installed on the top of the feeding frame, and the feeding hopper is located at the lower end of the discharging hopper.

[0012] As a preferred embodiment of the steel slag grinding and grading device of this utility model, the main body of the ball mill includes a drum, an inner liner, a bearing seat, and a first motor. The drum is mounted on the bearing seat and rotatably connected thereto. The first motor drives the drum. The inner liner is fixedly installed on the inner side of the drum. The side end face of the drum is provided with a feed inlet that cooperates with the feed hopper. The inner end face of the feed inlet is provided with spiral blades.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] 1. This utility model integrates a magnetic separation mechanism into the feeding mechanism, and sets a first and second guide chute in opposite directions at its lower end to form a guiding mechanism, realizing online efficient sorting and automatic diversion of raw materials. When steel slag raw material containing large iron blocks is conveyed to the magnetic separation mechanism by the feeding mechanism, the magnet will strongly attract the ferromagnetic large material. At the same time, the second motor drives the scraper to rotate and scrape against the lower end face of the magnet, forcibly peeling off the attracted iron blocks. With the help of the planar structure of the bracket, the iron blocks are ensured to slide smoothly into the first guide chute below for recycling. The non-magnetic or weakly magnetic steel slag material that is not attracted falls naturally into the second guide chute and continues to be conveyed to the subsequent grinding process. This structural design solves the key problems of material blockage, increased equipment wear, and waste of usable iron resources caused by iron blocks entering the ball mill in traditional processes, significantly improving the purity of the grinding raw materials, and realizing the effective recycling of iron resources.

[0015] 2. This utility model utilizes a scraper made of magnetic material, which is slidably connected to the scraping fan blade via a third sliding groove. This structure allows the scraper to adaptively adhere to the lower end face of the magnet under the magnetic force of the magnet. Regardless of minor vibrations or installation tolerances during equipment operation, it maintains optimal adhesion for scraping, thoroughly removing adsorbed iron blocks. After scraping, the scraper automatically retracts into the sliding groove under gravity, avoiding motion interference that may occur due to excessive adhesion. Furthermore, a rotatable roller is installed in a hidden groove on the upper end face of the scraper, transforming the contact between the scraper and the magnet surface into rolling friction. This low-friction design greatly reduces wear during the scraping process, significantly lowering the maintenance frequency and replacement costs caused by excessive scraper wear, while ensuring continuous and effective cleaning of the magnet surface. This guarantees long-term, continuous, and stable operation of the magnetic separation process, improving the service life and reliability of the entire device. Attached Figure Description

[0016] Figure 1 is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 is a front sectional view of this utility model;

[0018] Figure 3 is a schematic diagram of the feeding mechanism, magnetic separation mechanism and guiding mechanism of this utility model in coordination.

[0019] Figure 4 is a front sectional view of the scraper structure of this utility model;

[0020] Figure 5 is an enlarged view of point A in Figure 3 of this utility model;

[0021] Figure 6 is an enlarged view of section B in Figure 4 of this utility model.

[0022] In the diagram: 1. Ball mill body; 101. Drum; 102. Liner plate; 103. Bearing seat; 104. First motor; 105. Feed inlet; 106. Spiral blade; 2. Feeding mechanism; 201. Feeding frame; 202. Conveyor belt; 203. Feeding hopper; 204. Discharging hopper; 205. Feeding hopper; 3. Magnetic separation mechanism; 301. Support; 302. Magnet; 303. Second motor; 304. Scraper; 3041. Rotating shaft; 3042. Scraping fan blade; 3043. Scraper; 3044. Third chute; 3045. Roller; 3046. First limiting flange; 3047. Second limiting flange; 3048. Dark chute; 4. Material guiding mechanism; 401. First material guiding chute; 402. Filter screen; 403. Second material guiding chute. Detailed Implementation

[0023] Please refer to Figures 1-6. A steel slag grinding and grading device includes a ball mill body 1 and a feeding mechanism 2. A magnetic separation mechanism 3 is provided at the upper end of the feeding mechanism 2, and a material guiding mechanism 4 that cooperates with the magnetic separation mechanism 3 is provided at the lower end of the feeding mechanism 2.

[0024] The magnetic separation mechanism 3 includes a support 301, a magnet 302, a second motor 303, and a scraper 304. The magnet 302 and the second motor 303 are fixedly mounted on the support 301, and the scraper 304 is fixedly mounted on the output shaft of the second motor 303. The second motor 303 drives the scraper 304 to rotate so that the lower end face of the magnet 302 is scraped. The material guiding mechanism 4 includes a first material guiding chute 401 and a second material guiding chute 403 facing opposite directions. A filter screen 402 is provided on the first material guiding chute 401, and the second material guiding chute 403 is located at the lower end of the filter screen 402.

[0025] Furthermore, the lower end face of magnet 302 is flush with the lower top end face of bracket 301, and bracket 301 is made of non-magnetic material.

[0026] The lower end face of magnet 302 and the lower top end face of bracket 301 are on the same plane. After scraper 3043 scrapes the large steel block attracted by magnet 302 to the non-magnetic area of ​​bracket 301, it falls directly into the material guiding mechanism 4. The integrated planar structure improves the smoothness of scraping. The bracket 301 structure made of non-magnetic material allows the attracted large steel block to be quickly separated from bracket 301, avoiding insufficient peeling caused by magnetization.

[0027] Furthermore, the scraper 304 includes a rotating shaft 3041, a scraping fan blade 3042, and a scraper 3043. The scraping fan blade 3042 is evenly installed on the side end face of the rotating shaft 3041. A third sliding groove 3044 is provided on the upper end face of the scraping fan blade 3042. The scraper 3043 is installed in the third sliding groove 3044 and is slidably connected to the scraping fan blade 3042. The scraper 3043 is made of magnetic material.

[0028] The slidable scraper 3043 structure, and the scraper 3043 is made of magnetic material, allows the scraper 3043 to remain in contact with the lower end face of the magnet 302 during scraping under the action of the magnet 302, thereby sweeping off the iron block on the lower end face of the magnet 302. After being swept off, it slides into the third sliding groove 3044 under the action of gravity, thereby avoiding poor contact between the scraper 3043 and the magnet 302, which would lead to material leakage during scraping, or excessive contact, which would cause motion interference when the equipment shakes.

[0029] Furthermore, the top edge of the third chute 3044 is provided with a second limiting flange 3047, and the bottom edge of the scraper 3043 is provided with a first limiting flange 3046.

[0030] The first limiting flange 3046 and the second limiting flange 3047 cooperate to prevent the scraper 3043 from sliding out of the third slide groove 3044 and being unable to be put back into the third slide groove 3044, thereby improving the stability of the equipment.

[0031] Furthermore, a groove 3048 is provided on the upper end face of the scraper 3043, and a roller 3045 that is rotatably connected to the scraper 3043 is provided in the groove 3048.

[0032] The roller 3045 reduces the friction between the scraper 3043 and the magnet 302, thereby reducing equipment wear and extending equipment life. A groove 3048 is provided on the upper end face of the scraper 3043, and the roller 3045 is placed in the groove 3048, so that the roller 3045 is slightly higher than the scraper 3043. This reduces friction and prevents excessive gaps between the scraper 3043 and the magnet 302, which could cause material leakage.

[0033] Furthermore, the feeding mechanism 2 includes a feeding frame 201, a conveyor belt 202, a feeding hopper 203, a discharging hopper 204, and a feeding hopper 205. The conveyor belt 202 is installed on the feeding frame 201, the feeding hopper 203 is located at the bottom of the feeding frame 201, the discharging hopper 204 and the feeding hopper 205 are installed on the top of the feeding frame 201, and the feeding hopper 205 is located at the lower end of the discharging hopper 204.

[0034] The material fed from the feeding hopper 203 to the conveyor belt 202 is sent to the unloading hopper 204 by the motor-driven conveyor belt 202, and then falls into the feeding hopper 205. Finally, it enters the drum 101 through the feeding port 105 for grinding. The magnetic separation mechanism 3 is installed on the feeding frame 201 to perform magnetic screening, intercepting large iron blocks and preventing large iron blocks from entering the ball mill body 1, causing material blockage and wasting usable raw materials.

[0035] Furthermore, the main body 1 of the ball mill includes a drum 101, an inner liner 102, a bearing seat 103, and a first motor 104. The drum 101 is mounted on the bearing seat 103 and rotatably connected thereto. The first motor 104 drives the drum 101. The inner liner 102 is fixedly installed on the inner side of the drum 101. The side end face of the drum 101 is provided with a feed inlet 105 that cooperates with the feed hopper 205. The inner end face of the feed inlet 105 is provided with a spiral blade 106.

[0036] The spiral blades 106 of the feed inlet 105 feed the material from the feed hopper 205 into the drum 101, which in turn drives the drum 101 to rotate, so that the grinding balls inside the drum 101 grind the steel slag.

[0037] When using this equipment, the steel slag material is first fed into the feeding hopper 203 of the feeding mechanism 2. The material is then transported to the top unloading hopper 204 via the conveyor belt 202, and then falls into the feeding hopper 205. At this time, the magnetic separation mechanism 3 installed on the feeding frame 201 starts to work. The magnet 302 on the support 301 magnetically attracts the passing steel slag material, adsorbing large iron blocks. The second motor 303 drives the rotating shaft 3041 of the scraper 304 to rotate, causing the scraping fan blade 3042 and scraper 3043 to rotate accordingly. Since the scraper 3043 is made of magnetic material, under the action of the magnet 302, the scraper 3043 keeps in contact with its lower end face during scraping, sweeping off the iron blocks adsorbed by the lower end face of the magnet 302. The swept-off iron blocks move into the third sliding groove 3044 on the scraping fan blade 3042 under the action of gravity, and the first limiting flange 3046 and the third... The two limiting flanges 3047 cooperate to prevent the scraper 3043 from sliding out of the third chute 3044. At the same time, the roller 3045 in the dark groove 3048 on the upper end face of the scraper 3043 contacts the magnet 302, reducing friction and reducing equipment wear. The swept-off iron blocks enter the guiding mechanism 4. Since the guiding mechanism 4 includes the first guiding chute 401 and the second guiding chute 403 facing opposite directions, the iron blocks will slide down along the first chute, while a small amount of debris will slide down through the filter screen 402 and into the second chute. The steel slag material that is not attracted by the magnet 302 enters the drum 101 of the ball mill body 1 from the feed hopper 205 through the feed port 105 and under the action of the spiral blades 106. The first motor 104 drives the drum 101 to rotate on the bearing seat 103. The grinding balls in the drum 101 grind the steel slag during the rotation, and finally realize the grinding and classification of the steel slag.

[0038] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements 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 grinding and grading device, comprising a ball mill body (1) and a feeding mechanism (2), characterized in that: The upper end of the feeding mechanism (2) is provided with a magnetic separation mechanism (3), and the lower end of the feeding mechanism (2) is provided with a guiding mechanism (4) that cooperates with the magnetic separation mechanism (3). The magnetic separation mechanism (3) includes a bracket (301), a magnet (302), a second motor (303), and a scraper (304). The magnet (302) and the second motor (303) are fixedly installed on the bracket (301), and the scraper (304) is fixedly installed on the output shaft of the second motor (303). The second motor (303) drives the scraper (304) to rotate to scrape the lower end face of the magnet (302). The guiding mechanism (4) includes a first guiding chute (401) and a second guiding chute (403) facing opposite directions. A filter screen (402) is provided on the first guiding chute (401), and the second guiding chute (403) is located at the lower end of the filter screen (402).

2. The steel slag grinding and grading device as described in claim 1, characterized in that: The lower end face of the magnet (302) is flush with the lower top end face of the bracket (301), and the bracket (301) is made of non-magnetic material.

3. The steel slag grinding and grading device as described in claim 1, characterized in that: The scraper (304) includes a rotating shaft (3041), a scraping fan blade (3042), and a scraper (3043). The scraping fan blade (3042) is evenly installed on the side end face of the rotating shaft (3041). A third sliding groove (3044) is provided on the upper end face of the scraping fan blade (3042). The scraper (3043) is installed in the third sliding groove (3044) and slidably connected to the scraping fan blade (3042). The scraper (3043) is made of magnetic material.

4. The steel slag grinding and classifying device as described in claim 3, characterized in that: The top edge of the third chute (3044) is provided with a second limiting flange (3047), and the bottom edge of the scraper (3043) is provided with a first limiting flange (3046).

5. The steel slag grinding and grading device as described in claim 4, characterized in that: The upper end face of the scraper (3043) is provided with a groove (3048), and a roller (3045) rotatably connected to the scraper (3043) is provided in the groove (3048).

6. The steel slag grinding and classifying device as described in claim 1, characterized in that: The feeding mechanism (2) includes a feeding frame (201), a conveyor belt (202), a feeding hopper (203), a discharging hopper (204), and a feeding hopper (205). The conveyor belt (202) is installed on the feeding frame (201). The feeding hopper (203) is located at the bottom of the feeding frame (201). The discharging hopper (204) and the feeding hopper (205) are installed on the top of the feeding frame (201). The feeding hopper (205) is located at the lower end of the discharging hopper (204).

7. The steel slag grinding and classifying device as described in claim 1, characterized in that: The ball mill body (1) includes a drum (101), an inner liner (102), a bearing seat (103), and a first motor (104). The drum (101) is mounted on the bearing seat (103) and rotatably connected thereto. The first motor (104) drives the drum (101). The inner liner (102) is fixedly installed on the inner side of the drum (101). The side end face of the drum (101) is provided with a feed inlet (105) that cooperates with the feed hopper (205). The inner end face of the feed inlet (105) is provided with a spiral blade (106).

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