A steel slag magnetic impurity removal device for producing cement clinker by using steel slag
Patent Information
- Application Number
- CN202522473303.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-21
- Publication Date
- 2026-10-30
- Estimated Expiration
- 2035-11-21
AI Technical Summary
[0004]本实用新型的目的在于提供一种利用钢渣生产水泥熟料的钢渣磁吸除杂装置，通过设置除铁器、磁选输送机、收集盒、转轴、磁力弧板，解决了钢渣中的铁磁性杂质无法一次性全面去除的问题
本实用新型通过设置除铁器、磁选输送机、收集盒、转轴、磁力弧板，解决了钢渣中的铁磁性杂质无法一次性全面去除的问题；在进行钢渣的除杂时，将经过破碎机破碎后的钢渣置于磁选输送机中的输送带一上进行输送，此过程中，输送带一上的钢渣会经过除铁器，此时除铁器中的磁力滚筒二会吸附铁磁性杂质，使其粘附在输送带二表面，随着输送带二的运转，将铁磁性杂质导出，此为一重悬挂式磁吸除杂；随后，磁选输送机中的输送带一继续运动，经过磁力滚筒一时，向下翻转，此时，钢渣自然掉落，铁磁性杂质被磁力滚筒一磁吸吸附留在输送带一的表面，随后经过磁力板继续被磁吸，直至脱离磁力板后，铁磁性杂质向外部自然掉落排出，为二重磁吸除杂；最后，从输送带一上掉落的钢渣，掉落至转轴外旋转的磁力弧板上，此时一些铁磁性杂质会吸附在磁力弧板上，剩余的钢渣从漏槽中掉落，进入收集盒内的料槽中，实现三重磁吸除杂，完成一次性多重除杂作业。
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Figure CN224912566U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the technical field of cement clinker production, and in particular relates to a steel slag magnetic adsorption impurity removal device for producing cement clinker using steel slag. Background Technology
[0002] Steel slag is a byproduct of steelmaking. It consists of various oxides formed from the oxidation of impurities such as silicon, manganese, phosphorus, and sulfur in pig iron during smelting, as well as salts formed by the reaction of these oxides with solvents. Steel slag is clinker, a remelted phase with a low melting temperature. During remelting, the liquid phase forms early and has good fluidity. In terms of composition and mineral composition, steel slag possesses the basic components of silicate clinker and has a certain strength. Cement rotary kilns are high-temperature calcining equipment, with clinker temperatures reaching over 1400℃ in the calcining zone. The material is calcined in the rotary kiln for nearly 30 minutes, and the kiln tail temperature exceeds 1100℃. Adding steel slag from the kiln tail ensures thorough mixing of the steel slag with the calcined raw materials, allowing for reaction at high temperatures to form clinker. The addition of steel slag advances the appearance of the liquid phase and the formation of minerals such as C2S, C3A, and C4AF during calcination by about 10℃, and also advances the formation temperature of C3S. The incorporation of steel slag promotes the formation of a liquid phase, increases the liquid phase content of the system, and allows particles to diffuse more rapidly in the liquid phase, thus promoting the formation of a large amount of C3S minerals.
[0003] Using steel slag to produce clinker can effectively reduce the land occupation and pollution problems caused by steel slag stockpiling, bringing significant social benefits. It can also reduce clinker production costs and carbon emission intensity. However, the practical application of steel slag in clinker production still has the following drawbacks: Steel slag contains various useful components: 2%–8% metallic iron, 40%–60% calcium oxide, 3%–10% magnesium oxide, and 1%–8% manganese oxide. The mineral composition of steel slag is primarily tricalcium silicate, followed by dicalcium silicate, RO phase, dicalcium ferrite, and free calcium oxide. Therefore, steel slag still contains some ferromagnetic impurities. These substances cannot be used in cement clinker production, thus requiring the removal of these impurities. However, current methods for removing ferromagnetic impurities are relatively simple, such as iron separators, and are not sufficiently thorough. Utility Model Content
[0004] The purpose of this invention is to provide a magnetic impurity removal device for steel slag used in the production of cement clinker. By setting up an iron remover, a magnetic separation conveyor, a collection box, a rotating shaft, and a magnetic arc plate, it solves the problem that ferromagnetic impurities in steel slag cannot be completely removed in one go.
[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution: This utility model is a magnetic adsorption impurity removal device for steel slag in the production of cement clinker. It includes a magnetic separation conveyor, an iron remover, a collection box and a rotating shaft. The magnetic separation conveyor is inclined and the iron remover is located above the middle part of the magnetic separation conveyor. The collection box is located below the lower end of the magnetic separation conveyor. The magnetic separator conveyor includes two frames and a conveyor belt. A rotating roller is rotatably connected between the higher ends of the two frames, and a magnetic drum is rotatably connected between the lower ends of the two frames. The rotating roller and the magnetic drum are jointly driven by the conveyor belt. The iron remover includes two frames and a conveyor belt. A magnetic drum and a rotating roller are rotatably connected between the two frames. The magnetic drum is closer to the higher end of the magnetic separator than the rotating roller. The magnetic drum and the rotating roller are both covered by a conveyor belt. The collection box is equipped with a material trough, and a rotating shaft is installed above the material trough. Magnetic arc plates arranged in a ring array are fixed to the outer periphery of the rotating shaft.
[0006] Furthermore, two frames between the rotating roller and the magnetic roller are rotatably connected with equally spaced support rollers, and the higher end of the support roller contacts the inner top surface of the conveyor belt.
[0007] Furthermore, a crossbeam is provided above the magnetic separator conveyor, and uprights are fixed to the bottom surfaces of both ends of the crossbeam. The two uprights are respectively fixed to the upper ends of the two frames. Equally spaced rakes are fixed to the bottom of the crossbeam between the two uprights. The crossbeam and rakes are located near the upper part of the frame.
[0008] Furthermore, each of the two frame 1s is fixed with a support leg at its bottom, and a pad is fixed at the upper middle part of each of the two frame 1s, with the upper surface of the pad being horizontal and the upper end of the pad being fixedly connected to the frame 2 above it.
[0009] Furthermore, a magnetic plate is fixed between the two frames near the magnetic roller, and the higher end of the magnetic plate extends beyond the collection box when viewed from above. The magnetic plate is located below the support roller, and the lower inclined surface of the magnetic plate contacts the inner bottom surface of the conveyor belt.
[0010] Furthermore, a motor is fixed to the upper end of the collection box outside the material trough, and bearing seats are fixed above both sides of the material trough. The two ends of the rotating shaft are rotatably connected to the bearing seats, and the output shaft of the motor is drivenly connected to the end of the rotating shaft.
[0011] Furthermore, a slot is provided at one end of the magnetic arc plate near the rotating shaft, the rotation path of the magnetic arc plate passes through the material trough, and the magnetic arc plate is located below the lower end of the conveyor belt.
[0012] This utility model has the following beneficial effects: This invention solves the problem of the inability to completely remove ferromagnetic impurities from steel slag in one go by incorporating a magnetic separator, magnetic conveyor, collection box, rotating shaft, and magnetic arc plate. During the steel slag removal process, the crushed steel slag is placed on conveyor belt one of the magnetic conveyor. During this process, the steel slag on conveyor belt one passes through the magnetic separator, where the magnetic roller two adsorbs the ferromagnetic impurities, causing them to adhere to the surface of conveyor belt two. As conveyor belt two rotates, the ferromagnetic impurities are discharged; this is a first-stage suspended magnetic adsorption impurity removal. Subsequently, the conveyor belt in the magnetic conveyor... As the conveyor belt continues its movement, it flips downwards as it passes the magnetic roller. At this point, the steel slag falls off naturally, while the ferromagnetic impurities are magnetically attracted and retained on the surface of the conveyor belt by the magnetic roller. They then continue to be attracted by the magnetic plate until they detach from the magnetic plate, at which point the ferromagnetic impurities fall off naturally and are discharged, completing the double magnetic attraction impurity removal process. Finally, the steel slag falling from the conveyor belt falls onto the rotating magnetic arc plate outside the shaft. At this point, some ferromagnetic impurities are attracted to the magnetic arc plate, while the remaining steel slag falls from the trough into the material hopper inside the collection box, achieving triple magnetic attraction impurity removal and completing a one-time multi-stage impurity removal operation. Attached Figure Description
[0013] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below.
[0014] Figure 1 A perspective view of a magnetic adsorption impurity removal device for steel slag used in the production of cement clinker; Figure 2 This is a 3D view of a magnetic separator conveyor. Figure 3 for Figure 2 Structural diagram after the conveyor belt has been removed; Figure 4 for Figure 3 A diagram showing the state of the machine after one rack has been removed. Figure 5 This is a structural diagram of a magnetic separator; Figure 6 for Figure 5 Structural diagram of the conveyor belt after two cross-sections; Figure 7 This is a structural diagram of the collection box; Figure 8 This is a structural diagram of the rotating shaft and the magnetic arc plate.
[0015] Figure label: 1. Magnetic Separator Conveyor; 101. Frame 1; 102. Conveyor Belt 1; 103. Support Leg; 104. Pad Block; 105. Rotary Roller 1; 106. Magnetic Drum 1; 107. Support Roller; 108. Magnetic Plate; 2. Iron Remover; 201. Frame 2; 202. Conveyor Belt 2; 203. Magnetic Drum 2; 204. Rotary Roller 2; 3. Collection Box; 301. Motor; 302. Feed Trough; 303. Bearing Seat; 4. Crossbeam; 401. Upright Pole; 402. Rake Rod; 5. Rotating Shaft; 501. Magnetic Arc Plate; 502. Slot. Detailed Implementation
[0016] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.
[0017] Please see Figure 1-8 As shown, this utility model is a steel slag magnetic adsorption impurity removal device for producing cement clinker using steel slag, including a magnetic separation conveyor 1, an iron remover 2, a collection box 3 and a rotating shaft 5. The magnetic separation conveyor 1 is inclined, and the iron remover 2 is provided above the middle part of the magnetic separation conveyor 1, and the collection box 3 is provided below the lower end of the magnetic separation conveyor 1. The magnetic separator conveyor 1 is tilted, which reduces the drive required for conveying and saves energy. At the same time, it leaves space under the iron remover 2, which is convenient for installing the guide chute 302 under the transfer roller 204 of the iron remover 2 to remove the ferromagnetic impurities adsorbed by the iron remover 2. The steel slag that has been magnetically separated by the iron remover 2 and the magnetic separator conveyor 1 finally enters the collection box 3. The magnetic separator conveyor 1 includes two frames 101 and a conveyor belt 102. A rotating roller 105 is rotatably connected between the higher ends of the two frames 101, and a magnetic drum 106 is rotatably connected between the lower ends of the two frames 101. The rotating roller 105 and the magnetic drum 106 are jointly driven by the conveyor belt 102. The drive components in the magnetic separator conveyor 1 and the iron remover 2 have been omitted. In the magnetic separator conveyor 1, the rotating roller 105 and the magnetic drum 106 are installed through two frames 101. The two are covered by a conveyor belt 102. The steel slag is introduced from the higher end of the conveyor belt 102 (that is, the position near the rotating roller 105) and conveyed on the conveyor belt 102. The iron separator 2 includes two frames 201 and a conveyor belt 202. A magnetic drum 203 and a rotating roller 204 are rotatably connected between the two frames 201. The magnetic drum 203 is closer to the higher end of the magnetic separator conveyor 1 than the rotating roller 204. The magnetic drum 203 and the rotating roller 204 are both fitted with the conveyor belt 202. In the iron remover 2, a magnetic roller 203 and a rotating roller 204 are installed on two frames 201. The magnetic roller 203 is closer to the frame 101 and the rotating roller 204 is closer to the frame 101. A channel (sloping plate, discharge hopper, etc.) for outward material guidance is installed below the rotating roller 204 and between the frame 101. Therefore, when the steel slag passes through the magnetic roller 203, it is attracted to the conveyor belt 102, flips upward, and then falls naturally onto the corresponding guide channel 302 when passing through the rotating roller 204, and is discharged outward. The collection box 3 is provided with a material trough 302, and a rotating shaft 5 is provided above the material trough 302. Magnetic arc plates 501 arranged in a ring array are fixed on the outer periphery of the rotating shaft 5. The steel slag falling from the magnetic separator conveyor 1 falls into the material trough 302 inside the collection box 3. During this period, the steel slag will pass outside the rotating shaft 5 and after contacting the magnetic arc plate 501, the ferromagnetic impurities in the steel slag will be adsorbed again.
[0018] Between the two frames 101 between the rotating roller 105 and the magnetic roller 106, there are also equidistantly distributed support rollers 107, and the higher end of the support rollers 107 contacts the inner top surface of the conveyor belt 102. The design of numerous support rollers 107 provides stable support for the conveyor belt 102, preventing the conveyor belt 102 from denting when too much steel slag is conveyed.
[0019] A crossbeam 4 is provided above the magnetic separator conveyor 1. Uprights 401 are fixed to the bottom surface of both ends of the crossbeam 4. The two uprights 401 are fixed to the upper ends of the two frames 101 respectively. Rakes 402 are evenly distributed at the bottom of the crossbeam 4 between the two uprights 401. The crossbeam 4 and the rakes 402 are close to the upper part of the frame 101. The crossbeam 4 is installed on the frame 101 via the upright 401. The rake 402 below it will contact the steel slag on the conveyor belt 102 and distribute the steel slag evenly at equal intervals.
[0020] Both frames 101 are fixed with support legs 103 at their bottoms. The upper middle part of the two frames 101 is fixed with a pad 104, and the upper surface of the pad 104 is horizontal. The upper end of the pad 104 is fixedly connected to the frame 201 above it. The pad 104 is used to connect the magnetic separator conveyor 1 and the iron remover 2 to avoid the iron remover 2 from being suspended. Suspended operation may cause shaking, resulting in uneven magnetic attraction. The special structural design of the pad 104 will keep the iron remover 2 horizontal and maintain a certain gap under the roller 204.
[0021] A magnetic plate 108 is fixed between the two frames 101 near the magnetic roller 106. The higher end of the magnetic plate 108 extends beyond the collection box 3 when viewed from above. The magnetic plate 108 is located below the support roller 107, and the lower inclined surface of the magnetic plate 108 contacts the inner bottom surface of the conveyor belt 102. When the steel slag passes through the magnetic roller 106, it flips downwards. At this time, the steel slag falls off naturally, and the ferromagnetic impurities are magnetically attracted and retained on the surface of the conveyor belt 102 by the magnetic roller 106. Then, they continue to be magnetically attracted by the magnetic plate 108 until they are separated from the magnetic plate 108 and the ferromagnetic impurities fall off naturally to the outside and are discharged.
[0022] A motor 301 is fixed at the upper end of the collection box 3 outside the material trough 302. Bearing seats 303 are fixed above both sides of the material trough 302. The two ends of the rotating shaft 5 are rotatably connected to the bearing seats 303. The output shaft of the motor 301 is connected to the end of the rotating shaft 5 for transmission. Motor 301 drives shaft 5 to rotate, causing a large number of magnetic arc plates 501 to rotate.
[0023] A slot 502 is provided at one end of the magnetic arc plate 501 near the rotating shaft 5. The rotation path of the magnetic arc plate 501 passes through the material trough 302, and the magnetic arc plate 501 is located below the lower end of the conveyor belt 102. The steel slag falling from the conveyor belt 102 falls onto the magnetic arc plate 501 rotating outside the shaft 5. At this time, some ferromagnetic impurities will be attracted to the magnetic arc plate 501, and the remaining steel slag falls from the trough 502 and enters the material trough 302 in the collection box 3.
[0024] The specific working principle of this utility model is as follows: First, the magnetic separator conveyor 1 is set at an inclination. When removing impurities from the steel slag, the steel slag crushed by the crusher is placed on the conveyor belt 102 in the magnetic separator conveyor 1 for conveying. As the steel slag moves with the conveyor belt 102, the rake 402 contacts the steel slag on the conveyor belt 102, distributing the steel slag evenly at equal intervals. Subsequently, the steel slag passes under the iron separator 2. At this time, the magnetic roller 203 in the iron separator 2 adsorbs ferromagnetic impurities, causing them to adhere to the surface of the conveyor belt 202. As the conveyor belt 202 moves, the ferromagnetic impurities are discharged. Then, the conveyor belt 102 in the magnetic separator conveyor 1 continues to move, passing through... When passing through the magnetic roller 106, it flips downwards, at which point the steel slag falls off naturally. The ferromagnetic impurities are magnetically attracted and retained on the surface of the conveyor belt 102 by the magnetic roller 106. Then, they continue to be magnetically attracted by the magnetic plate 108 until they are detached from the magnetic plate 108. The ferromagnetic impurities then fall off naturally to the outside and are discharged. Finally, the steel slag falling from the conveyor belt 102 falls onto the rotating magnetic arc plate 501 outside the rotating shaft 5. At this time, some ferromagnetic impurities will be attracted to the magnetic arc plate 501. The remaining steel slag falls from the trough 502 and enters the material trough 302 in the collection box 3. The ferromagnetic impurities at the top of the magnetic arc plate 501 are minimal and only need to be cleaned periodically.
[0025] The above are merely preferred embodiments of the present utility model and do not limit the present utility model. Any modifications, equivalent substitutions, or improvements made to the technical solutions described in the foregoing embodiments, or to some of the technical features, shall fall within the protection scope of the present utility model.
Claims
1. A magnetic adsorption impurity removal device for producing cement clinker using steel slag, comprising a magnetic separator conveyor (1), an iron remover (2), a collection box (3), and a rotating shaft (5), characterized in that: The magnetic separator (1) is inclined, and an iron remover (2) is provided above the middle part of the magnetic separator (1), and a collection box (3) is provided below the lower end of the magnetic separator (1). The magnetic separator conveyor (1) includes two frames (101) and a conveyor belt (102). A rotating roller (105) is rotatably connected between the higher ends of the two frames (101), and a magnetic drum (106) is rotatably connected between the lower ends of the two frames (101). The rotating roller (105) and the magnetic drum (106) are connected together by the conveyor belt (102). The iron remover (2) includes two frames (201) and a conveyor belt (202). A magnetic roller (203) and a rotating roller (204) are rotatably connected between the two frames (201). The magnetic roller (203) is closer to the higher end of the magnetic separator (1) than the rotating roller (204). The magnetic roller (203) and the rotating roller (204) are both fitted with the conveyor belt (202). The collection box (3) is provided with a material trough (302), and a rotating shaft (5) is provided above the material trough (302). Magnetic arc plates (501) arranged in a ring array are fixed on the outer periphery of the rotating shaft (5).
2. The steel slag magnetic adsorption impurity removal device for producing cement clinker using steel slag according to claim 1, characterized in that: Between the two frames (101) between the rotating roller (105) and the magnetic roller (106), there are also equidistantly distributed support rollers (107), and the higher end of the support roller (107) contacts the inner top surface of the conveyor belt (102).
3. The steel slag magnetic adsorption impurity removal device for producing cement clinker using steel slag according to claim 1, characterized in that: A crossbeam (4) is provided above the magnetic separator (1). A vertical pole (401) is fixed to the bottom surface of both ends of the crossbeam (4). The two vertical poles (401) are respectively fixed to the upper ends of two frames (101). Equally spaced rakes (402) are fixed to the bottom of the crossbeam (4) between the two vertical poles (401). The crossbeam (4) and the rakes (402) are located near the upper part of the frame (101).
4. The steel slag magnetic adsorption impurity removal device for producing cement clinker using steel slag according to claim 1, characterized in that: Both of the two frame 1 (101) are fixed with support legs (103) at the bottom. The upper part of the middle of the two frame 1 (101) is fixed with a pad (104), and the upper surface of the pad (104) is horizontal. The upper end of the pad (104) is fixedly connected to the frame 2 (201) above it.
5. A magnetic adsorption impurity removal device for producing cement clinker using steel slag according to claim 2, characterized in that: A magnetic plate (108) is fixed between the two frames (101) near the magnetic roller (106), and the higher end of the magnetic plate (108) extends beyond the collection box (3) in a top view. The magnetic plate (108) is located below the support roller (107), and the lower inclined surface of the magnetic plate (108) contacts the inner bottom surface of the conveyor belt (102).
6. The steel slag magnetic adsorption impurity removal device for producing cement clinker using steel slag according to claim 1, characterized in that: A motor (301) is fixed at the upper end of the collection box (3) outside the material trough (302). Bearing seats (303) are fixed above both sides of the material trough (302). The two ends of the rotating shaft (5) are rotatably connected to the bearing seats (303). The output shaft of the motor (301) is connected to the end of the rotating shaft (5) for transmission.
7. A magnetic adsorption impurity removal device for producing cement clinker using steel slag according to claim 1, characterized in that: The magnetic arc plate (501) has a slot (502) at one end near the rotating shaft (5). The rotation path of the magnetic arc plate (501) passes through the material trough (302), and the magnetic arc plate (501) is located below the lower end of the conveyor belt (102).