Alumina powder multi-roller magnetic separation anti-iron slag secondary pollution collection structure
Patent Information
- Application Number
- CN202521902954.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-04
- Publication Date
- 2026-10-27
- Estimated Expiration
- 2035-09-04
AI Technical Summary
[0003]现有的矾土粉多辊磁选防铁渣二次污染收集结构大多是通过多个磁辊呈环形阵列对粉料进行铁屑吸附，这种去除方法吸附效果有限，粉料与在磁辊上的停留时间有限，而且粉料中的细颗粒铁屑有逃逸的风险
本矾土粉多辊磁选防铁渣二次污染收集结构，通过两个永磁辊和电磁铁配合使用，两个永磁辊对矾土粉中较大颗粒的铁屑进行吸附处理，电磁铁和堆料笼配合使用，将初步处理后的矾土粉进行精细处理，矾土粉中的细颗粒铁渣被电磁铁吸附，堆料笼旋转周向孔洞迫使物料反复滚动，延长与电磁铁接触时间，提高分离精度，防止细颗粒铁屑去除不完全影响矾土粉的纯度。
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Figure CN224894359U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of bauxite powder treatment technology, specifically a multi-roller magnetic separation structure for collecting bauxite powder to prevent secondary pollution from iron slag. Background Technology
[0002] Bauxite powder (also known as alumina powder or bauxite ore powder) is a fine powder material processed from bauxite ore. Its main component is alumina, and it contains impurities such as iron, silicon, and titanium. Removing iron filings from bauxite powder can significantly increase the added value of the product and reduce the risks of downstream applications.
[0003] Existing multi-roller magnetic separation structures for bauxite powder to prevent secondary pollution from iron slag mostly use multiple magnetic rollers arranged in a ring array to adsorb iron filings from the powder. This removal method has limited adsorption effect, the powder has a limited residence time on the magnetic rollers, and there is a risk that fine iron filings in the powder may escape. Utility Model Content
[0004] The purpose of this invention is to provide a multi-roller magnetic separation structure for bauxite powder to prevent secondary pollution from iron slag collection, so as to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a multi-roller magnetic separation structure for collecting alumina powder to prevent secondary pollution from iron slag, comprising a machine body, wherein the machine body contains a magnetic separation chamber, the top of the magnetic separation chamber is provided with a feeding port, the magnetic separation chamber is provided with two permanent magnet rollers, the magnetic separation chamber below the two permanent magnet rollers is provided with a stacking cage, an electromagnet is inserted into the stacking cage, iron slag discharge ports are provided on both sides of the machine body near the two permanent magnet rollers, and a powder discharge port is provided on one side of the bottom of the machine body near the stacking cage, and a distributing roller is provided inside the feeding port.
[0006] Preferably, one end of the separating roller extends to a feeding port, and a first motor is provided at the extended end of the separating roller. A conical plate is provided inside the magnetic separation chamber below the separating roller. The first motor contains a reducer. The first motor drives the separating roller to rotate. The rotation speed of the separating roller can be adjusted according to the iron filings content in the material. The separating roller conveys the material to the top of the conical plate, and the material is separated into two streams by the conical plate and falls downward.
[0007] Preferably, a scraper is provided on the outer surface of one side of the bottom of each of the two permanent magnet rollers. The scraper is fixedly installed inside the machine body. The two scraper are located above the iron slag discharge port. The two permanent magnets rotate relative to each other. By adsorbing larger iron filings in the powder onto the outer surface of the permanent magnets, when the adsorbed iron filings rotate to the position of the scraper, the iron filings will be scraped off by the scraper and fall into the iron slag discharge port and be discharged from the machine body.
[0008] Preferably, each of the two permanent magnet rollers and the stacking cage has a connecting shaft at one end, and one end of each of the three connecting shafts extends out of the machine body. The extended ends of the connecting shafts of the two permanent magnet rollers are each equipped with gears, which mesh with each other. The extended ends of the column of the stacking cage and any one of the permanent magnet rollers are each equipped with pulleys. A belt is connected to the outer surfaces of the two pulleys. A second motor is installed at one end of the column of the stacking cage, driving the stacking cage to rotate. The circumferential surface of the stacking cage has several holes. When the stacking cage rotates, the bauxite powder is driven by the holes to continuously contact the electromagnet, attracting fine iron filings to the outside of the electromagnet. The bauxite powder is driven by the holes to be discharged from the material distribution port. When the stacking cage rotates, the corresponding permanent magnet roller is driven to rotate via the transmission belt and two pulleys. The other permanent magnet roller is driven to rotate by the gears, and the two permanent magnet rollers rotate in opposite directions.
[0009] Preferably, the rear end of the machine body is provided with a protective shell, which protects the gears, pulleys, belts and the second motor inside, preventing dust from adhering to the outer surface of the gears and causing jamming.
[0010] Preferably, one end of the electromagnet extends out of the machine body, and the extended end of the electromagnet is provided with a mounting plate. The mounting plate is fixedly installed on the outer surface of the machine body by screws. When the electromagnet needs to be cleaned, the screws are removed and the electromagnet is pulled out to de-energize it, causing the electromagnet to lose its magnetic force. The fine iron filings attached to the outer surface of the electromagnet will then detach from the electromagnet.
[0011] Compared with the prior art, the beneficial effects of this utility model are: This multi-roller magnetic separator for bauxite powder, designed to prevent secondary pollution from iron slag, uses two permanent magnet rollers and an electromagnet in conjunction. The two permanent magnet rollers adsorb larger iron filings from the bauxite powder, while the electromagnet and a stacking cage work together to further refine the pre-treated bauxite powder. Fine iron filings in the bauxite powder are adsorbed by the electromagnet, and the rotating circumferential holes of the stacking cage force the material to roll repeatedly, extending the contact time with the electromagnet, improving separation accuracy, and preventing incomplete removal of fine iron filings from affecting the purity of the bauxite powder. Attached Figure Description
[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic cross-sectional view of the overall structure of this utility model; Figure 3 This is a schematic diagram of the permanent magnet roller and stacking cage structure of this utility model.
[0013] In the diagram: 1. Machine body; 101. Feed inlet; 102. Powder discharge inlet; 103. Iron slag discharge inlet; 104. Protective shell; 105. Magnetic separation chamber; 2. Electromagnet; 3. First motor; 4. Distributing roller; 5. Scraper; 6. Permanent magnet roller; 7. Conical plate; 8. Belt; 9. Second motor; 10. Gear; 11. Stacking cage; 12. Mounting plate; 13. Connecting shaft; 14. Pulley. Detailed Implementation
[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0015] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," 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.
[0016] like Figures 1 to 3As shown, the multi-roller magnetic separation structure for bauxite powder to prevent secondary pollution from iron slag in this embodiment includes a machine body 1. The machine body 1 contains a magnetic separation chamber 105, which performs magnetic separation of the bauxite powder to separate iron filings. A feed inlet 101 is located at the top of the magnetic separation chamber 105, into which bauxite powder is fed. Two permanent magnet rollers 6 are installed inside the magnetic separation chamber 105, and these rollers move in a relatively linear manner, adsorbing larger iron filings from the bauxite powder onto their outer surface. A stacking cage 11 is located inside the magnetic separation chamber 105 below the two permanent magnet rollers 6. An electromagnet 2 is inserted inside the stacking cage 11. The bauxite powder that has been initially magnetically separated falls onto the top of the stacking cage 11. The stacking cage 11... The surface is provided with several holes. When the stacking cage 11 rotates, it will cause the material to roll on the outer surface of the electromagnet 2, so that the fine iron filings in the bauxite powder material are adsorbed on the outer surface of the electromagnet 2. Iron slag discharge ports 103 are provided on both sides of the machine body 1 near the two permanent magnet rollers 6. Large iron filings adsorbed on the outer surface of the permanent magnet rollers 6 are discharged from the iron slag discharge ports 103. A powder discharge port 102 is provided on one side of the bottom of the machine body 1 near the stacking cage 11. When the stacking cage 11 rotates, the material is driven by the holes and discharged from the powder discharge port 102. The feed port 101 is provided with a distributing roller 4. The rotation speed of the distributing roller 4 can be adjusted according to the iron filings content in the material.
[0017] Specifically, one end of the separating roller 4 extends into a feeding port 101, and a first motor 3 is provided at the extended end of the separating roller 4. A conical plate 7 is provided inside the magnetic separation chamber 105 below the separating roller 4. The first motor 3 contains a reducer. The first motor 3 drives the separating roller 4 to rotate. The rotation speed of the separating roller 4 can be adjusted according to the iron filings content in the material. The separating roller 4 conveys the material to the top of the conical plate 7, and the material is separated into two streams by the conical plate 7 and falls downward.
[0018] Furthermore, scraper plates 5 are provided on the outer surface of one side of the bottom of the two permanent magnet rollers 6. The scraper plates 5 are fixedly installed inside the machine body 1. The two scraper plates 5 are located above the iron slag discharge port 103. The two permanent magnets rotate relative to each other. By adsorbing the larger iron filings in the powder onto the outer surface of the permanent magnets, when the adsorbed iron filings rotate to the position of the scraper plate 5, the iron filings will be scraped off by the scraper plate 5 and fall into the iron slag discharge port 103 and be discharged from the machine body 1.
[0019] Furthermore, each of the two permanent magnet rollers 6 and the stacking cage 11 is provided with a connecting shaft 13 at one end. One end of each of the three connecting shafts 13 extends out of the machine body 1. The extended ends of the connecting shafts 13 of the two permanent magnet rollers 6 are provided with gears 10, which mesh with each other. The column extension ends of the stacking cage 11 and any one of the permanent magnet rollers 6 are provided with pulleys 14. The outer surfaces of the two pulleys 14 are connected to a belt 8. A second motor 9 is installed at one end of the column of the stacking cage 11, and the second motor 9 drives the stacking cage. The material storage cage 11 rotates, and several holes are provided on the circumferential surface of the material storage cage 11. When the material storage cage 11 rotates, the bauxite powder is driven by the holes to continuously contact the electromagnet 2, and the fine iron filings are attracted to the outside of the electromagnet 2. The bauxite powder material is driven by the holes to be discharged from the material distribution port. When the material storage cage 11 rotates, the corresponding permanent magnet roller 6 is driven to rotate through the transmission belt 8 and two pulleys 14. The other permanent magnet roller 6 is driven to rotate by the gear 10. The two permanent magnet rollers 6 rotate in opposite directions.
[0020] Furthermore, a protective shell 104 is provided at the rear end of the machine body 1. The protective shell 104 protects the gear 10, pulley 14, belt 8 and second motor 9 inside, preventing dust from adhering to the outer surface of the gear 10 and causing jamming.
[0021] Furthermore, one end of the electromagnet 2 extends out of the body 1, and the extended end of the electromagnet 2 is provided with a mounting plate 12. The mounting plate 12 is fixedly installed on the outer surface of the body 1. The mounting plate 12 is installed on the outer surface of the body 1 by screws. When it is necessary to clean the electromagnet 2, the screws are removed and the electromagnet 2 is pulled out to de-energize the electromagnet 2, so that the electromagnet 2 loses its magnetic force, and the fine iron filings attached to the outer surface of the electromagnet 2 will detach from the electromagnet 2.
[0022] The usage method of this embodiment is as follows: When using the multi-roller magnetic separation structure for bauxite powder to prevent secondary pollution of iron slag, the bauxite powder raw material is fed into the feed port 101 and then the first motor 3 is started to drive the distribution roller 4 to rotate. The rotation speed of the distribution roller 4 is adjusted according to the iron content of the raw material. When the iron content is high, the rotation speed is reduced and the distribution time is extended. After the material is dispersed by the distribution roller 4, it is divided into two streams by the conical plate 7 and falls evenly into the area of the permanent magnet roller 6. The two permanent magnet rollers 6 are meshed by gears 10 to achieve relative linear motion. Large iron particles in the falling material are adsorbed on the surface of the permanent magnet roller 6. When the permanent magnet roller 6 adsorbing iron particles rotates to the position of the scraper plate 5, the iron particles are scraped off and discharged from the machine body 1 through the iron slag discharge port 103. The bauxite powder after iron removal falls into the top of the stacking cage 11. When the stacking cage 11 rotates, the material rolls inside the stacking cage 11. Fine iron particles are adsorbed by the electromagnet 2. The purified bauxite powder is guided through the holes of the stacking cage 11 and discharged from the powder discharge port 102. Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.
Claims
1. A multi-roller magnetic separator for collecting alumina powder to prevent secondary pollution from iron slag, comprising a body (1), characterized in that: The machine body (1) contains a magnetic separation chamber (105). The top of the magnetic separation chamber (105) is provided with a feeding port (101). The magnetic separation chamber (105) is provided with two permanent magnet rollers (6). The magnetic separation chamber (105) below the two permanent magnet rollers (6) is provided with a stacking cage (11). An electromagnet (2) is inserted into the stacking cage (11). Iron slag discharge ports (103) are provided on both sides of the machine body (1) near the two permanent magnet rollers (6). A powder discharge port (102) is provided on one side of the bottom of the machine body (1) near the stacking cage (11). A distributing roller (4) is provided inside the feeding port (101).
2. The bauxite powder multi-roller magnetic separation and iron slag secondary pollution collection structure according to claim 1, characterized in that: One end of the material distribution roller (4) extends into a feeding port (101), and a first motor (3) is provided at the extended end of the material distribution roller (4). A conical plate (7) is provided inside the magnetic separation cavity (105) below the material distribution roller (4).
3. The bauxite powder multi-roller magnetic separation and iron slag secondary pollution collection structure according to claim 1, characterized in that: Both permanent magnet rollers (6) have scraper plates (5) on the outer surface of one side of their bottom. The scraper plates (5) are fixedly installed inside the machine body (1) and are located above the iron slag discharge port (103).
4. The bauxite powder multi-roller magnetic separation and iron slag secondary pollution collection structure according to claim 1, characterized in that: One end of each of the two permanent magnet rollers (6) and the stacking cage (11) is provided with a connecting shaft (13), one end of each of the three connecting shafts (13) extends out of the machine body (1), the extended ends of the connecting shafts (13) of the two permanent magnet rollers (6) are provided with gears (10), the two gears (10) mesh with each other, the extended ends of the column of the stacking cage (11) and any one of the permanent magnet rollers (6) are provided with pulleys (14), the outer surfaces of the two pulleys (14) are connected to a belt (8), and a second motor (9) is installed at one end of the column of the stacking cage (11).
5. The bauxite powder multi-roller magnetic separation and iron slag secondary pollution collection structure according to claim 1, characterized in that: The rear end of the body (1) is provided with a protective shell (104).
6. The bauxite powder multi-roller magnetic separation and iron slag secondary pollution collection structure according to claim 1, characterized in that: One end of the electromagnet (2) extends out of the body (1), and the extended end of the electromagnet (2) is provided with a mounting plate (12), which is fixedly installed on the outer surface of the body (1).