A pulverizer for electric furnace slag silicon thermal method magnesium smelting

Abstract

The application relates to the technical field of pulverizers, and particularly discloses a pulverizer for smelting magnesium by using electric furnace slag and silicon-thermal method, which comprises a protective cover seat placed on the ground and used for external protection, two crushing rollers arranged in the protective cover seat and used for crushing raw materials, a driving mechanism arranged outside the protective cover seat and used for driving the relative rotation of the two crushing rollers, two groups of feeding mechanisms arranged in the protective cover seat and used for guiding the raw materials to the positions directly above the two crushing rollers, and a rotating shaft rotatably arranged in the protective cover seat; the raw materials fall onto the reinforcing plates from the extension pipes for the first time, and then the raw materials between the reinforcing plates are slowly discharged from the positions close to the crushing rollers in the process of the rotation of the rotating shaft; compared with the conventional feeding mode from the top, the falling height of the raw materials is reduced twice, the impact force of the raw materials impacting on the crushing rollers is reduced, the flying of the crushed stones is avoided, and the service life of the crushing rollers is prolonged.

Description

Technical Field

[0001] This invention relates to the field of pulverizer technology, and specifically proposes a pulverizer for smelting magnesium using the silicothermic process with electric furnace slag. Background Technology

[0002] The process of smelting magnesium using the silicothermic process with electric furnace slag includes raw material preparation, batching, calcination, hot charging, vacuum melting, magnesium steam condensation refining, and final slag discharge and recycling. In the raw material preparation process, bauxite, dolomite, and ferrosilicon need to be crushed separately. In actual production, crushers are usually used to crush the raw materials. Common types of crushers include jaw crushers, cone crushers, impact crushers, and roller crushers. Because double roller crushers produce uniform particle size and have less over-crushing, they are often used to process brittle materials.

[0003] Because the crushing rollers of a double-roll crusher are rotating at high speed, the raw materials need to be dropped from a high position to ensure safe operation. When dropped, the raw materials fall rapidly and directly impact the surface of the crushing rollers, causing damage to the crushing rollers, affecting the crushing effect, and affecting the service life of the equipment. It also causes the stone to splash and dust to rise. The rapidly rotating crushing rollers also generate a lot of dust during crushing, posing a significant safety hazard. Summary of the Invention

[0004] To address the aforementioned problems, this invention provides a pulverizer for smelting magnesium using the silicothermic process with electric furnace slag, which solves the problems mentioned in the background section.

[0005] To achieve the above objectives, the present invention employs the following technical solution: a pulverizer for smelting magnesium using the silicothermic process with electric furnace slag, comprising a protective cover placed on the ground for external protection, two crushing rollers for crushing raw materials being assembled inside the protective cover, a drive mechanism for driving the two crushing rollers to rotate relative to each other being assembled outside the protective cover, and two sets of feeding mechanisms for guiding the raw materials to the area directly above and between the two crushing rollers being assembled inside the protective cover. Each feeding mechanism includes a rotating shaft rotatably mounted inside the protective cover, and guide plates that form a sealed space with the crushing rollers are equidistantly mounted on the surfaces of both rotating shafts. The guide plates of each set of feeding mechanisms... Each is equipped with four guide plates that can move radially along the shaft to the surface of the crushing rollers. When located directly above the middle of the two crushing rollers, the ends of the adjacent guide plates are squeezed to form a sealed space. The adjacent guide plates closest to the lower end of the center line of the two crushing rollers rotate and separate to allow material to fall. The oblique side of the protective cover is equipped with a feeding mechanism for conveying raw materials to the surface of the guide plates. The inside of the protective cover is equipped with two sets of arc-shaped baffles for limiting movement. The ends of the guide plates abut against the surface of the arc-shaped baffles. The top of the arc-shaped baffles is equipped with an integrally formed sealing plate for sealing. The sealing plate is fixedly installed with the protective cover. The surface of the protective cover is provided with a viewing window.

[0006] Preferably, the surface of the rotating shaft is fixedly installed with multiple guide rods corresponding to each guide plate. The guide rods move through the interior of the guide plate. The surface of the rotating shaft is also equipped with a reinforcing component for reinforcing the installation of the guide plate. Guide blocks for guiding are fixedly installed on both sides of the guide plate. A closed-loop groove is opened inside the protective cover seat. The closed-loop groove includes an arc-shaped area and a vertical area. The guide blocks are locked inside the closed-loop groove and move.

[0007] Preferably, the closed-loop groove also includes a connecting area tangent to the arc-shaped area, and the vertical area extends directly above the space between the two crushing rollers, with the connecting area communicating with the interior of the vertical area.

[0008] Preferably, the number of reinforcing components is four, with each of the four reinforcing components corresponding to a guide plate. Each reinforcing component includes a reinforcing plate installed on both sides of the guide plate, with the surface of the reinforcing plate inclined and its end abutting against the surface of the guide plate.

[0009] Preferably, the feeding mechanism includes a feeding pipe that runs through the surface of the arc-shaped baffle, the upper end of the feeding pipe extending to the outside of the protective cover, the feeding port of the feeding pipe being equipped with a horizontal storage pipe, the storage pipe and the feeding pipe being connected by a flexible material pipe, the top of the storage pipe being equipped with a feeding box for discharging material, and the surface of the protective cover being equipped with a lifting component for lifting the storage pipe.

[0010] Preferably, the lifting component includes a support fixedly mounted on the surface of the protective cover, the inside of the support is fitted with a cam that abuts against the lower surface of the storage tube, and a motor is mounted on the surface of the support to drive the cam to rotate.

[0011] Preferably, the feed tube is internally fitted with an extension tube that can extend and retract within it, with the end of the extension tube located above the guide plate.

[0012] Preferably, guide shafts are fixedly installed on both sides of the extension tube, and guide grooves are opened on the surface of the protective cover along the falling direction of the feed tube. One end of the rotating shaft extends to the outside of the protective cover, and a four-star rotating plate is mounted on the surface of the rotating shaft. The side of the rotating plate abuts against the surface of the guide shaft, and a safety cover for protection is mounted on the outside of the protective cover.

[0013] Preferably, a U-shaped telescopic plate is sleeved on the surface of the guide plate, the end of the telescopic plate abuts against the surface of the arc-shaped baffle, and multiple springs in a compressed state are assembled between the telescopic plate and the guide plate.

[0014] Preferably, the adjacent sides of the two sealing plates are located directly above the axes of the two rotating shafts.

[0015] The above technical solution has the following advantages or beneficial effects: 1. The present invention provides a crusher for smelting magnesium by the silicothermic process of electric furnace slag. The raw material falls from the extension tube to the reinforcing plate for the first time. Then, the raw material located between the reinforcing plates is slowly fed from the position near the top of the crushing roller as the shaft rotates. Compared with the conventional method of feeding from a high place, by reducing the falling height of the raw material twice, the impact force of the raw material on the crushing roller is reduced, which not only avoids the flying of crushed stone, but also extends the service life of the crushing roller.

[0016] 2. The raw materials enter the closed protective cover through the storage pipe, flexible material pipe, discharge pipe and extension pipe, which initially reduces dust rising. During the falling process of the raw materials, the two adjacent telescopic plates above are connected to form a secondary seal to reduce dust spillage. Under the sealing effect of the transparent sealing cover, the dust spillage is reduced a third time. The crushed raw materials are transported out by the screw conveyor, which reduces the dust spillage a fourth time.

[0017] 3. The rotating shaft drives the guide plate to rotate, and the rotating plate and the guide shaft work together to move the extension tube down or up. This avoids the two moving asynchronously and causing the telescopic plate and the extension tube to collide. The spring is designed to provide retraction space to avoid collision between the telescopic plate and the extension tube. Attached Figure Description

[0018] The invention, its features, shape, and advantages will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings. Like reference numerals denote like parts throughout the drawings, which are not intentionally drawn to scale; the focus is on illustrating the spirit of the invention.

[0019] Figure 1 This is a three-dimensional structural schematic diagram of a pulverizer for smelting magnesium using the silicothermic process with electric furnace slag, provided by the present invention.

[0020] Figure 2 This is a schematic diagram of the combined three-dimensional structure of the feeding mechanism and the lifting components.

[0021] Figure 3 yes Figure 2 A cross section.

[0022] Figure 4 This is a cross-sectional view of the protective cover when the crushing roller is rotating and in the crushing state.

[0023] Figure 5 This is a cross-sectional view of the feeding mechanism when the guide plate is in the closed state.

[0024] Figure 6 This is a cross-sectional view of the feeding mechanism when the guide plate is in the unloading state.

[0025] Figure 7 yes Figure 1 A top-down view of the three-dimensional structure.

[0026] Figure 8 This is a three-dimensional structural diagram showing the installation status of the feeding mechanism and the protective cover.

[0027] Figure 9 This is a three-dimensional structural diagram of the feeding mechanism.

[0028] Figure 10 This is a schematic diagram of the three-dimensional structure of the closed-loop groove inside the protective cover.

[0029] In the diagram: 1. Protective cover; 2. Crushing roller; 3. Drive mechanism; 4. Feeding mechanism; 401. Rotating shaft; 402. Guide plate; 403. Guide rod; 404. Guide block; 405. Closed-loop groove; 405a. Arc-shaped area; 405b. Vertical area; 405c. Connecting area; 5. Discharge mechanism; 501. Discharge pipe; 502. Storage pipe; 503. Flexible material pipe; 504. Discharge box; 505. Extension pipe; 506. Guide shaft; 507. Guide groove; 508. Rotating plate; 509. Safety cover; 6. Arc-shaped baffle; 7. Sealing plate; 8. Lifting assembly; 801. Support base; 802. Cam; 9. Reinforcing assembly; 901. Reinforcing plate; 10. Viewing window; 11. Telescopic plate; 12. Spring. Detailed Implementation

[0030] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0031] To enable those skilled in the art to better understand the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0032] Figure 1 A pulverizer for slag silicothermic magnesium smelting in electric furnaces is disclosed, which is used to crush ores such as bauxite, dolomite, and ferrosilicon. Figure 1 , Figure 4 and Figure 10As shown, the crusher uses double crushing rollers 2 to crush the raw materials. The crushing rollers 2 are rotatably installed inside the protective cover 1. The two crushing rollers 2 rotate in opposite directions through an external drive mechanism 3. Each crushing roller 2 is driven by a drive mechanism 3. The drive mechanism 3 consists of a motor, a pulley fixed to the output end of the motor and the crushing roller 2, and a belt that drives the two pulleys. The protective cover 1 is placed on the ground at a certain height to facilitate the discharge of the crushed raw materials from below the protective cover 1. A screw conveyor is installed at the discharge port to convey the crushed raw materials out by screw, which can also effectively reduce the overflow of dust.

[0033] like Figure 1 , Figure 4 and Figure 5 As shown, two sets of feeding mechanisms 4 are installed inside the protective cover 1. The two sets of feeding mechanisms 4 are symmetrically installed, and the discharge port of the feeding mechanism 4 is located directly above the position between the two crushing rollers 2. In this embodiment, the feeding mechanism 4 includes a rotating shaft 401 rotatably installed inside the protective cover 1. The two rotating shafts 401 rotate slowly and continuously relative to each other, driven by an external motor (not shown in the figure). Each rotating shaft 401 is equipped with four guide plates 402, and the four guide plates 402 are equidistantly arranged (i.e., the included angle between adjacent guide plates 402 is 90°). Each guide plate 402 can move radially along the rotating shaft 401. A discharge mechanism 5 is installed on the oblique side of the protective cover 1 to transfer the raw material to the surface of the guide plate 402. It should be noted that each time the discharge mechanism 5 is used for transmission, the guide plate 402 located below the discharge port must be in a completely horizontal state. Figure 4 The position of the middle guide plate 402 is determined until it rotates to... Figure 5 In the intermediate state, the raw material transfer is completed, and as the rotating shaft 401 continues to rotate, Figure 5 The two guide plates 402 at the upper middle position and the two guide plates 402 at the lower position are in a state of mutual contact and sealing, so even during the feeding process, dust can be effectively prevented from overflowing.

[0034] like Figure 8 and Figure 9As shown, each guide plate 402 has multiple guide rods 403 slidably mounted on one side near the rotating shaft 401. The guide rods 403 are fixedly mounted on the surface of the rotating shaft 401, allowing the guide plate 402 to move along the length of the guide rods 403. A U-shaped telescopic plate 11 is slidably sleeved on the surface of the guide plate 402, with the ends of the telescopic plate 11 being arc-shaped. A spring 12 is fixedly installed between the telescopic plate 11 and the guide plate 402. To ensure that the guide plate 402 can provide greater support force for the raw material, and to ensure the design... To extend the service life of the equipment, four reinforcing components 9 are fixedly installed on the surface of the rotating shaft 401. Each of the four reinforcing components 9 corresponds to a guide plate 402. Each reinforcing component 9 includes two reinforcing plates 901, which are located on both sides of the telescopic plate 11 to provide oblique support for the guide plate 402. At this time, the reinforcing plates 901, the rotating shaft 401 and the telescopic plate 11 form a triangular shape with high stability, ensuring that the telescopic plate 11 and the guide plate 402 can provide greater support for the raw materials.

[0035] like Figure 4 , Figure 5 , Figure 8 and Figure 10 As shown, two closed-loop grooves 405 are formed inside the protective cover 1. Each closed-loop groove 405 includes an arc-shaped area 405a, a vertical area 405b, and a connecting area 405c. The two closed-loop grooves 405 are symmetrically distributed, and the two vertical areas 405b are opposite each other. It should be noted that the lower end of the vertical area 405b is at the same height as the highest point of the crushing roller 2. The connecting area 405c is tangent to the path of the arc-shaped area 405a. The connections between the vertical area 405b and the arc-shaped area 405a, as well as the connecting area 405c, are all rounded. The sides of the guide plate 402 are fixed... A guide block 404 is fixedly installed, with its end abutting against the inside of the closed-loop groove 405. Two arc-shaped baffles 6 are fixedly installed inside the protective cover seat 1. The arc-shaped baffles 6 are concentrically set with the arc-shaped area 405a. The upper end of the arc-shaped baffles 6 is located directly above the axis of the rotating shaft 401. A horizontally extending sealing plate 7 is integrally formed on the upper end of the arc-shaped baffles 6. A viewing window 10 is formed between the two sealing plates 7. The viewing window 10 is sealed with a transparent sealing cover. The operator can observe the material falling on the guide plate 402 through the viewing window 10.

[0036] like Figures 4-6 and Figure 8As shown, during the rotation of the shaft 401, the guide block 404 remains inside the closed-loop groove 405. Therefore, the path of the closed-loop groove 405 is the moving path of the end of each guide plate 402. During this process, the guide plate 402 slides on the surface of the guide rod 403. The raw material falls from the inside of the feeding mechanism 5 onto the surfaces of the telescopic plate 11 and the reinforcing plate 901. During the rotation, the raw material gets stuck between adjacent reinforcing plates 901. As the shaft 401 rotates, the gradually approaching telescopic plates 11 collide with each other. The state of the guide plate 402 and the reinforcing plate 901 is as follows: Figure 5 As shown, at this time, the spring 12 connected to the mutually abutting telescopic plates 11 is gradually compressed, and when the rotation state is again in the state of... Figure 4 In the intermediate state, the springs 12 connected to the mutually opposing telescopic plates 11 are compressed to their shortest length, and the raw material is also in a horizontal position. The rotation continues, and the rotation state returns to normal. Figure 5 In the current state, the guide plate 402 and the reinforcing plate 901 are tilted downwards. When the two telescopic plates 11 separate, as... Figure 6 As shown, the raw material will slide between the two crushing rollers 2, but the ends of the two adjacent telescopic plates 11 will press and contact each other, isolating the crushing position from the outside by the two telescopic plates 11, which can effectively prevent dust from overflowing and ensure the safety of the operating environment. At the same time, the lower ends of the two telescopic plates 11 are separated (i.e., the raw material discharge port position) and are closer to the surface of the crushing roller 2, which can effectively reduce the impact of the raw material on the crushing roller 2, improve the service life of the crushing roller 2, and indirectly improve the service life of the entire equipment.

[0037] like Figures 1-4 and Figure 7 As shown, the feeding mechanism 5 includes a feeding pipe 501, which is obliquely fixed through the surfaces of the protective cover 1 and the arc-shaped baffle 6. In order to prevent the raw material from falling directly and hitting the surface of the feeding mechanism 4, an extension pipe 505 is movably installed inside the feeding pipe 501. The extension pipe 505 can slide along the inner wall of the feeding pipe 501. When feeding is required, the lower end of the extension pipe 505 is close to the surface of the feeding mechanism 4. As the feeding mechanism 4 rotates continuously, the lower end of the extension pipe 505 gradually moves away from the feeding mechanism 4.

[0038] like Figures 1-4 and Figure 7As shown, guide shafts 506 are fixedly installed on both sides of the extension tube 505. A guide groove 507 is formed on the surface of the protective cover 1 along the feeding path of the feeding tube 501. The guide shafts 506 are located inside the guide grooves 507 and can slide along them. Correspondingly, the rotating shaft 401 extends to the outside of the protective cover 1. A four-star-shaped rotating plate 508 is fixedly installed at the end of the rotating shaft 401. During the rotation of the rotating shaft 401, the edge of the rotating plate 508 abuts against the surface of the guide shaft 506. A safety cover 509 is fixedly installed on the outside of the protective cover 1. 508, guide groove 507 and guide shaft 506 are all located inside safety cover 509. During the rotation of feeding mechanism 4, rotating plate 508 also rotates and squeezes guide shaft 506 to gradually move away from rotating shaft 401, so that extension tube 505 gradually moves away from feeding mechanism 4. Therefore, the raw material will not directly hit the surface of feeding mechanism 4 from a high position, thus effectively ensuring the service life of feeding mechanism 4 and indirectly ensuring the service life of crusher. By adjusting the falling height of raw material twice, the impact force on components when raw material is discharged is reduced.

[0039] like Figures 1-4 The feeding mechanism 5 also includes a horizontally installed storage pipe 502. The width of the storage pipe 502 and the feeding pipe 501 is at least greater than 1 / 2 and less than 3 / 4 of the width of the feeding mechanism 4, ensuring that the raw material falls evenly on the surface of the feeding mechanism 4. Space is left between the feeding edge and the protective cover 1 to allow the raw material to slide, minimizing the gap between the feeding mechanism 4 and the protective cover 1. A flexible material pipe 503 is fixedly installed between the storage pipe 502 and the feeding pipe 501. Initially, the storage pipe 502 is horizontal and no material is fed. A lifting component 8 is installed on the surface of the protective cover 1 to lift one end of the storage pipe 502, making the storage pipe 502 tilted, thus enabling the transport of raw material. The lifting component 8 includes a support base 801, which is fixedly installed on the surface of the protective cover 1. The lower surface of the storage pipe 502 overlaps the upper surface of the support base 801. Inside the support base 801, a cam 802 is rotatably mounted via a rotating shaft driven by a motor. When the rotating shaft rotates, the cam 802 indirectly lifts the storage tube 502. Above the storage tube 502, a discharge box 504 for discharging material is installed. When the discharge box 504 is filled with raw material, the material falls into the storage tube 502. When the storage tube 502 is lifted, due to its wide width, the material falls evenly into the feeding mechanism 4, preventing the material from accumulating in one position and dispersing the support pressure of the feeding mechanism 4, thus indirectly ensuring the service life of the feeding mechanism 4. At the same time, when the material is fed into the feeding mechanism 4, because the material is evenly spread laterally during feeding, it is prevented from concentrating in the middle of the crushing roller 2, dispersing the pressure of the crushing roller 2 during crushing, and indirectly improving the service life of the crushing roller 2, thereby improving the overall service life of the crusher.

[0040] This invention provides a pulverizer for smelting magnesium using the silicothermic process with electric furnace slag. The raw material is placed inside a feeding box 504, and under its own weight, it falls into a storage pipe 502. The rotating shaft 401, drive mechanism 3, and cam 802 rotate simultaneously. The protruding part of the cam 802 abuts against the lower surface of the storage pipe 502, which is in an inclined state. The raw material can pass through the flexible material pipe 503, the feeding pipe 501, and the extension pipe 505 from inside the storage pipe 502, falling onto the surface of the telescopic plate 11 and the reinforcing plate 901. As the rotating shaft 401 rotates continuously, the guide block 404 moves inside the closed-loop groove 405, allowing the guide plate 402 to slide along the surface of the guide rod 403. Simultaneously, the telescopic plate 11 also moves with the guide plate 402. Because a spring 12 exists between the guide plate 402 and the telescopic plate 11, when rotating to… Figure 5 In the current state, the ends of the two adjacent telescopic plates 11 at the upper position contact and press against each other to form a sealed space. The gap between the two adjacent telescopic plates 11 at the lower position gradually increases, and the raw material falls onto the surface of the two crushing rollers 2. The crushing rollers 2 crush the raw material. During this process, the rotating plate 508 also rotates with the rotating shaft 401. The surface of the rotating plate 508 continuously presses against the guide shaft 506, causing the guide shaft 506 to drive the extension tube 505 away from the surface of the rotating shaft 401 until the extension tube 505 can no longer move. At this time, when the telescopic plate 11 passes through the extension tube 505, the protruding part of the extension tube 505 will press against the telescopic plate 11, the spring 12 is compressed, and the telescopic plate 11 can smoothly pass through the position of the extension tube 505 for the next feeding, and continue to repeat the above operation.

[0041] It should be noted that when the telescopic plate 11 rotates upward from the horizontal state, the extension tube 505 begins to move away from the rotating shaft 401. After the telescopic plate 11 rotates 45°, the extension tube 505 begins to move closer to the rotating shaft 401. When the next telescopic plate 11 rotates to the horizontal state, the extension tube 505 is closest to the surface of the telescopic plate 11, and the raw material tilts and slides down onto the reinforcing plate 901.

[0042] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention 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 invention.

[0043] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "connected," "installed," and "linked" 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 internal connection of two components. Those skilled in the art will understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0044] The preferred embodiments of the present invention have been described above. It should be understood that the present invention is not limited to the specific embodiments described above, and the devices and structures not described in detail should be understood as being implemented in a manner common to the art; any possible variations and modifications made by those skilled in the art without departing from the technical solution of the present invention, or equivalent embodiments with equivalent changes, do not affect the essential content of the present invention. Therefore, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the protection scope of the technical solution of the present invention.

Claims

1. A pulverizer for smelting magnesium using the silicothermic process with electric furnace slag, comprising a protective cover placed on the ground, wherein two crushing rollers for crushing raw materials are assembled inside the protective cover, and a drive mechanism for driving the two crushing rollers to rotate relative to each other is assembled outside the protective cover, characterized in that: The protective cover is equipped with two sets of feeding mechanisms for guiding raw materials to the area directly above the two crushing rollers. The feeding mechanism includes a rotating shaft rotatably installed inside the protective cover. The surfaces of the two rotating shafts are equidistantly fitted with guide plates that form a sealed space with the crushing rollers. Each set of feeding mechanisms has four guide plates that can move radially along the rotating shaft to the surface of the crushing rollers. The ends of the adjacent guide plates located directly above the middle of the two crushing rollers are squeezed to form a sealed space. The adjacent guide plates closest to the lower end of the center line of the two crushing rollers rotate and separate to drop the material. The raw material falls after being buffered twice. The protective cover is equipped with a feeding mechanism on its oblique side for uniformly dispersing and conveying raw materials to the surface of the guide plate. The interior of the protective cover is equipped with two sets of arc-shaped baffles for limiting the position. The end of the guide plate abuts against the surface of the arc-shaped baffle. The top of the arc-shaped baffle is integrally formed with a sealing plate for sealing. The sealing plate is fixedly installed with the protective cover. The surface of the protective cover is provided with a viewing window. The surface of the rotating shaft is fixedly equipped with multiple guide rods corresponding to each guide plate. The guide rods move through the interior of the guide plate. The surface of the rotating shaft is also equipped with a reinforcing component for reinforcing the installation of the guide plate. Guide blocks for guiding are fixedly installed on both sides of the guide plate. A closed-loop groove is opened inside the protective cover seat. The closed-loop groove includes an arc-shaped area and a vertical area. The guide blocks move inside the closed-loop groove.

2. The pulverizer for smelting magnesium using the silicothermic process with electric furnace slag according to claim 1, characterized in that: The closed-loop groove also includes a connecting area tangent to the arc-shaped area, and the vertical area extends directly above the space between the two crushing rollers. The connecting area is connected to the interior of the vertical area.

3. A pulverizer for smelting magnesium using the silicothermic process with electric furnace slag according to claim 1, characterized in that: The number of reinforcement components is four, and each of the four reinforcement components corresponds to a guide plate. Each reinforcement component includes a reinforcement plate installed on both sides of the guide plate. The surface of the reinforcement plate is inclined and its end abuts against the surface of the guide plate.

4. A pulverizer for smelting magnesium using the silicothermic process with electric furnace slag according to claim 1, characterized in that: The feeding mechanism includes a feeding pipe that runs through the surface of an arc-shaped baffle. The upper end of the feeding pipe extends to the outside of the protective cover. The feeding inlet of the feeding pipe is equipped with a horizontal storage pipe. The storage pipe and the feeding pipe are connected by a flexible material pipe. The top of the storage pipe is equipped with a feeding box for discharging material. The surface of the protective cover is equipped with a lifting assembly for lifting the storage pipe.

5. A pulverizer for smelting magnesium using the silicothermic process with electric furnace slag according to claim 4, characterized in that: The lifting assembly includes a support base fixedly installed on the surface of the protective cover, and a cam that abuts against the lower surface of the storage tube is assembled inside the support base. A motor is installed on the surface of the support base to drive the cam to rotate.

6. A pulverizer for smelting magnesium using the silicothermic process with electric furnace slag according to claim 4, characterized in that: The feed tube is internally fitted with an extension tube that can extend and retract within it, with the end of the extension tube located above the guide plate.

7. A pulverizer for smelting magnesium using the silicothermic process with electric furnace slag according to claim 6, characterized in that: Guide shafts are fixedly installed on both sides of the extension tube. A guide groove is opened on the surface of the protective cover along the falling direction of the feed tube. The guide shaft is stuck inside the guide groove. One end of the rotating shaft extends to the outside of the protective cover. A four-star rotating plate is mounted on the surface of the rotating shaft. The side of the rotating plate abuts against the surface of the guide shaft. A safety cover for protection is mounted on the outside of the protective cover.

8. A pulverizer for smelting magnesium using the silicothermic process with electric furnace slag according to claim 7, characterized in that: A U-shaped telescopic plate is fitted onto the surface of the guide plate, and the end of the telescopic plate abuts against the surface of the arc-shaped baffle. Multiple springs in a compressed state are assembled between the telescopic plate and the guide plate.

9. A pulverizer for smelting magnesium using the silicothermic process with electric furnace slag according to claim 1, characterized in that: The adjacent sides of the two sealing plates are located directly above the axes of the two rotating shafts.

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