Auxiliary material baking device for steelmaking

Abstract

The application discloses a steelmaking auxiliary material roasting device, and relates to the technical field of steelmaking auxiliary material roasting equipment. The device comprises a rack, a plurality of storage roasting mechanisms vertically installed side by side in the rack, a capsule furnace body for roasting auxiliary materials, a feeding channel arranged above the capsule furnace body and communicated with the capsule furnace body, a discharging channel arranged below the capsule furnace body and communicated with the capsule furnace body, and a horizontally arranged discharging channel communicated with the discharging channel. The device further comprises a heating system installed around the capsule furnace body for roasting and heat preservation of the capsule furnace body. The heating system heats and roasts the whole capsule furnace body and improves the roasting efficiency of the auxiliary materials in the capsule furnace body. Under the action of gravity, the roasted auxiliary materials enter the discharging channel from the discharging channel, finished auxiliary materials are discharged from the discharging channel, continuous and uninterrupted roasting is realized, and the roasting efficiency is improved.

Description

Technical Field

[0001] This application relates to the technical field of auxiliary material baking equipment for steelmaking, and in particular to a baking device for auxiliary materials in steelmaking. Background Technology

[0002] Steelmaking requires a large amount of auxiliary materials, such as lime, fluorite, silicon carbide, and coke. These auxiliary materials are prone to absorbing moisture. During the steelmaking process, the moisture in these materials is decomposed into hydrogen, which enters the molten steel. Hydrogen can easily cause defects such as white spots in steel, resulting in substandard or scrap products. Therefore, the auxiliary materials need to be thoroughly baked before steelmaking to minimize the moisture content and reduce the amount of hydrogen entering the molten steel, thereby improving the quality of the steel products.

[0003] To address the issue of baking auxiliary materials used in steelmaking, patent CN209279559 discloses a lime baking device, including a frame and a silo. The silo contains an inclined partition that divides the interior into a combustion chamber and a feeding chamber. The combustion chamber is located below the feeding chamber. A discharge channel is located at the outlet, and the outlet of the discharge channel is sealed. During baking, the lime to be baked enters the feeding chamber through the inlet. Due to the seal at the outlet, the feeding chamber is filled with lime. When the heat source of the combustion chamber bakes the feeding chamber, the lime closer to the combustion chamber heats up faster and has a better baking effect, while the lime farther from the combustion chamber heats up slower and has a poorer baking effect. The moisture content of the lime being baked in the feeding chamber meets the requirements, but the baking process takes a long time.

[0004] Regarding the aforementioned technologies, the inventors believe that lime baking devices suffer from low baking efficiency. Summary of the Invention

[0005] To improve the low baking efficiency of auxiliary material baking devices for steelmaking, this application provides a baking device for auxiliary materials in steelmaking, which adopts the following technical solution: A steelmaking auxiliary material baking device includes a frame, several material storage and baking mechanisms installed side by side within the frame, each material storage and baking mechanism including a bladder-type furnace body for baking the auxiliary materials, a feeding channel above the bladder-type furnace body and communicating with the bladder-type furnace body, a discharging channel below the bladder-type furnace body and communicating with the bladder-type furnace body, and a horizontally arranged discharge channel communicating with the discharging channel; it also includes a heating system installed around the bladder-type furnace body for baking and heat preservation of the bladder-type furnace body.

[0006] By adopting the above technical solution, the auxiliary material baking device improves the baking capacity of auxiliary materials through several storage and baking mechanisms arranged side by side in the frame. The storage and baking mechanism includes a bladder furnace body, a feeding channel, a feeding channel, and a discharging channel. The auxiliary materials enter the bladder furnace body from the feeding channel. The heating system is installed around the bladder furnace body and heats and bakes the entire bladder furnace body, improving the baking efficiency of the auxiliary materials in the bladder furnace body. Under the action of gravity, the baked auxiliary materials enter the discharging channel from the feeding channel, and the finished auxiliary materials are unloaded from the discharging channel, realizing continuous and uninterrupted baking and improving the baking efficiency.

[0007] Optionally, the bladder-type furnace body is a hollow spherical furnace body, which is fixedly installed inside the frame and connected to the feeding channel and the unloading channel respectively.

[0008] By adopting the above technical solution, under the condition that the heating area of ​​the spherical furnace body is the same as that of other furnace bodies, the volume of the spherical furnace body is larger than that of other furnace bodies, the amount of auxiliary materials stored is greater than that of other furnace bodies, and its heating efficiency is also much greater than that of other furnace bodies, which can greatly improve the utilization rate of energy.

[0009] Optionally, the heating system includes a heating component and an insulation component filled within the frame for heat preservation of the storage baking mechanism and the heating component.

[0010] By adopting the above technical solution, the heating system heats the bladder furnace body through heating components and insulates the feeding channel, bladder furnace body, feeding channel and discharging channel through insulation components, thereby preventing heat loss and improving thermal efficiency.

[0011] Optionally, the heating assembly includes two heat-resistant bodies arranged around the bladder-type furnace body and a plurality of heating elements mounted on the heat-resistant bodies. The heat-resistant bodies are provided with an arc-shaped surface adapted to the bladder-type furnace body, and the heat-resistant bodies are also provided with a plurality of heating holes that penetrate the heat-resistant bodies and communicate with the arc-shaped surface. The heating elements are inserted into the heating holes.

[0012] By adopting the above technical solution, the heating component is installed around the bladder furnace body by two heat-resistant bodies. The heat-resistant bodies are provided with arc-shaped surfaces that are adapted to the bladder furnace body, and also have heating holes that penetrate the arc-shaped surfaces. Heating elements are installed in the heating holes. The heat-resistant bodies heat the bladder furnace body where there are heating holes, and keep the bladder furnace body warm where there are no heating holes, which greatly improves the heating efficiency.

[0013] Optionally, the multiple heating holes on the heat-resistant body are arranged in multiple rows in the vertical direction, and the multiple rows of heating holes have a diamond-shaped arrangement. The number of heating holes in each row gradually decreases from the furnace body toward the feeding channel and the unloading channel.

[0014] By adopting the above technical solution, the heat-resistant body heats and bakes the bladder furnace body through a diamond-shaped arrangement of heating holes. The number of heating holes facing the feeding channel of the bladder furnace body is reduced, so the heating temperature of the feeding channel is lower than that of the bladder furnace body. The feeding channel preheats the auxiliary materials, preventing a sharp rise in the temperature of the auxiliary materials entering the bladder furnace body and reducing damage to the bladder furnace body caused by auxiliary material breakage and splashing. The number of heating holes facing the unloading channel of the bladder furnace body is also reduced, so the heating temperature of the unloading channel is lower than that of the bladder furnace body. The unloading channel cools and keeps the auxiliary materials warm, preventing the high-temperature auxiliary materials coming out of the bladder furnace body from quickly entering the cold air, which would cause the auxiliary materials to break or pulverize, which is not conducive to their subsequent addition to molten steel.

[0015] Optionally, the number of the material storage and baking mechanisms is 2 or 3.

[0016] By adopting the above technical solution, the baking device is equipped with two or three material storage and baking mechanisms in the frame, which greatly increases the amount of auxiliary materials baked in a single operation. At the same time, it is beneficial to heat and keep the bladder furnace body warm, thereby improving the thermal efficiency of heating and baking the bladder furnace body.

[0017] Optionally, it also includes a feeding mechanism for supplying materials to the storage and baking mechanism. The feeding mechanism includes a feeding hopper for storing auxiliary materials, an inclined belt conveyor connecting the discharge port of the feeding hopper to the inlet of the feeding channel, a protective cover on the inclined belt conveyor to prevent the auxiliary materials from getting damp, and a dust removal system connected to several of the feeding channels.

[0018] By adopting the above technical solution, the feeding mechanism transports the auxiliary materials in the feeding hopper to the feeding channel through the inclined belt conveyor, realizing continuous feeding of the storage and baking mechanism, improving the feeding efficiency. The inclined belt conveyor is equipped with a moisture-proof cover for the auxiliary materials. Through the dust removal system connected to all feeding channels, the dust entering the feeding channel or generated in the feeding channel during the baking process is treated, improving the working environment around the operation and contributing to environmental protection.

[0019] Optionally, it also includes a discharge mechanism for unloading auxiliary materials from the discharge channel. The discharge mechanism includes a material scraping component, a discharge guide frame, and a discharge drive component mounted on the discharge guide frame for driving the material scraping component to move. The discharge guide frame is arranged opposite to the discharge channel.

[0020] By adopting the above technical solution, the unloading mechanism drives the unloading assembly to move on the unloading guide rail frame through the unloading drive assembly, thereby unloading the finished auxiliary materials in the unloading channel, improving the unloading efficiency and reducing the labor intensity of workers.

[0021] Optionally, the material-removing assembly includes a moving trolley and a material-removing rake. The moving trolley is slidably mounted on the discharge guide rail frame, and the material-removing rake is hinged to the moving trolley. It also includes an air spring disposed between the material-removing rake and the moving trolley. The two ends of the air spring are fixedly connected to the material-removing rake and the moving trolley, respectively, and the air spring drives the material-removing rake to swing.

[0022] By adopting the above technical solution, the material-removing assembly drives the material-removing rake to move via a trolley that is slidably set on the discharge guide rail. The material-removing rake is hinged to the trolley and is driven to swing by an air spring, thereby pressing the material-removing rake into the auxiliary material pile in the discharge channel to remove material, thus reducing the labor intensity of workers.

[0023] Optionally, the discharge drive assembly includes a drive motor, which is fixedly installed at the end of the discharge guide frame away from the discharge channel. A first rotating shaft is rotatably arranged at the end of the discharge guide frame near the drive motor. The output shaft of the drive motor is fixedly connected to the first rotating shaft. A first sprocket for transmission is provided on the first rotating shaft. A second rotating shaft is rotatably arranged at the end of the discharge guide frame away from the drive motor. A second sprocket for transmission is provided on the second rotating shaft. The first sprocket and the second sprocket are connected by chain drive. The two ends of the chain are respectively fixedly connected to the two ends of the moving trolley.

[0024] By adopting the above technical solution, the discharge drive assembly drives the first rotating shaft to rotate through the drive motor. The first rotating shaft drives the first sprocket to rotate. The second rotating shaft and the second sprocket rotate under the transmission of the chain. The chain rotates, thereby moving the mobile trolley on the discharge guide frame, so that the material rake can unload the auxiliary material from the discharge channel.

[0025] In summary, this application includes at least one of the following beneficial technical effects: 1. The auxiliary material baking device improves the baking capacity of auxiliary materials by using several storage baking mechanisms arranged side by side in the frame. The storage baking mechanism heats and keeps the furnace body warm by a heating system installed around the furnace body, which improves the baking efficiency of the auxiliary materials in the furnace body. Under the action of gravity, the baked auxiliary materials enter the discharge channel from the feeding channel, and the finished auxiliary materials are discharged from the discharge channel, realizing continuous and uninterrupted baking and improving the baking efficiency.

[0026] 2. A spherical furnace body is a hollow spherical furnace body. With the same heating area, the volume of the spherical furnace body is larger than that of other shapes, and it can store more auxiliary materials than other shapes. Its heating efficiency is also much greater than that of other shapes, which greatly improves the utilization rate of energy.

[0027] 3. The heating system heats the bladder furnace body through heating components and insulates the feeding channel, bladder furnace body, feeding channel and discharging channel through insulation components to prevent heat loss and improve the thermal efficiency of baking the bladder furnace body.

[0028] 4. The heating components are installed around the bladder-type furnace body by two heat-resistant bodies. The heat-resistant bodies have arc-shaped surfaces that are compatible with the bladder-type furnace body, and also have heating holes that penetrate the arc-shaped surfaces. Heating elements are installed in the heating holes. The parts of the heat-resistant bodies with heating holes heat the bladder-type furnace body, while the parts without heating holes keep the bladder-type furnace body warm, which greatly improves the heating efficiency.

[0029] 5. The heat-resistant body heats and bakes the furnace body through diamond-shaped heating holes. The number of heating holes in both the direction of the furnace body facing the feeding channel and the direction of the unloading channel is reduced. In this way, the feeding channel preheats the auxiliary materials, preventing the temperature of the auxiliary materials entering the furnace body from rising sharply, and reducing the damage to the furnace body caused by the breakage and splashing of auxiliary materials. The unloading channel cools and keeps the auxiliary materials warm, preventing the high-temperature auxiliary materials coming out of the furnace body from quickly entering the cold air, which would cause the auxiliary materials to break or pulverize, which is not conducive to their subsequent addition to the molten steel.

[0030] 6. The baking device greatly increases the amount of auxiliary materials baked in a single operation by setting two or three material storage and baking mechanisms in the frame. At the same time, it is beneficial to heat and keep the bladder furnace body warm, thereby improving the thermal efficiency of heating and baking the bladder furnace body.

[0031] 7. The feeding mechanism uses an inclined belt conveyor to transport the auxiliary materials in the feeding hopper to the feeding channel, realizing continuous feeding of the storage and baking mechanism, improving the feeding efficiency. The inclined belt conveyor is equipped with a moisture-proof cover for the auxiliary materials. Through a dust removal system connected to all feeding channels, dust entering the feeding channel or generated during the baking process in the feeding channel is treated, improving the working environment around the operation and contributing to environmental protection.

[0032] 8. The discharge mechanism drives the material unloading component to move on the discharge guide rail frame through the discharge drive component, thereby unloading the finished auxiliary materials in the discharge channel, improving the unloading efficiency and reducing the labor intensity of workers.

[0033] 9. The material-removing assembly moves the material-removing rake by a sliding trolley mounted on the discharge guide rail. The material-removing rake is hinged to the trolley and is driven to swing by an air spring, thereby pressing the material-removing rake into the auxiliary material pile in the discharge channel to remove material, thus reducing the labor intensity of workers.

[0034] 10. The discharge drive assembly drives the first rotating shaft to rotate via a drive motor. The first rotating shaft drives the first sprocket to rotate. The second rotating shaft and the second sprocket rotate under the transmission of the chain. The chain rotates, thereby moving the mobile trolley on the discharge guide frame, so that the material rake can scoop out the auxiliary material from the discharge channel for unloading. Attached Figure Description

[0035] Figure 1 This is a schematic diagram of a steelmaking auxiliary material baking device disclosed in this application.

[0036] Figure 2 This is a full sectional view of a steelmaking auxiliary material baking device disclosed in this application.

[0037] Figure 3 for Figure 2 A sectional view at section AA.

[0038] Figure 4 This is a schematic diagram of the structure of the heat-resistant body disclosed in this application.

[0039] Figure 5 This is a front view of the heat-resistant body disclosed in this application.

[0040] Figure 6 This application discloses a structural schematic diagram of a steelmaking auxiliary material baking device, including a feeding mechanism and a discharging mechanism.

[0041] Figure 7 This application discloses a full sectional view of a steelmaking auxiliary material baking device, including a feeding mechanism and a discharging mechanism.

[0042] In the picture: 1. Frame; 2. Material storage and baking mechanism; 21. Bladder-type furnace body; 22. Feeding channel; 221. Inlet; 23. Discharge channel; 24. Discharge channel; 25. Discharge door; 26. Door cylinder; 3. Heating system; 31. Heating component; 311. Heat-resistant body; 3111. Arc-shaped surface; 3112. Heating hole; 312. Heating element; 32. Insulation component; 4. Feeding mechanism; 41. Feeding bin; 42. Inclined belt conveyor; 421, protective cover; 43, dust removal system; 5, discharge mechanism; 51, material handling assembly; 511, moving trolley; 512, material handling rake; 513, air spring; 52, discharge guide rail frame; 53, discharge drive assembly; 531, drive motor; 532, first rotating shaft; 533, first sprocket; 534, second rotating shaft; 535, second sprocket; 536, chain; 6, finished product box. Detailed Implementation

[0043] The following combination Figures 1 to 7 This application will be described in further detail.

[0044] This application discloses a baking device for steelmaking auxiliary materials. It is used to bake steelmaking auxiliary materials to reduce their moisture content. These auxiliary materials can be materials such as lime, fluorite, silicon carbide, and coke. This application uses lime as an example for illustration. (Refer to...) Figure 1 and Figure 2 The steelmaking auxiliary material baking device includes a frame 1 and several storage and baking mechanisms 2 installed side by side within the frame 1. In this embodiment, there are two storage and baking mechanisms 2, while in other embodiments, there are three. Arranging two or three storage and baking mechanisms 2 side by side can significantly increase the production capacity of baked lime, while reducing heat loss and improving energy utilization. The storage and baking mechanism 2 includes a bladder-type furnace body 21 for baking lime, a feeding channel 22 connected to the bladder-type furnace body 21 and located above it, and a feeding channel 22 located above the bladder-type furnace body 21. The furnace body 21 includes a feeding channel 23 connected to the bladder furnace body 21 below the furnace body 21, and a horizontally arranged discharge channel 24 connected to the feeding channel 23. It also includes a heating system 3 installed around the bladder furnace body 21 for baking and heat preservation of the bladder furnace body 21. The heating system 3 heats and bakes and preserves the entire bladder furnace body 21, which improves the baking efficiency of the lime inside the bladder furnace body 21. Under the action of gravity, the baked lime enters the discharge channel 24 from the feeding channel 23, and the finished lime is discharged from the discharge channel 24, realizing continuous and uninterrupted baking and improving the baking efficiency.

[0045] Reference Figure 3 The bladder-type furnace body 21 is a hollow spherical furnace body. The shape of the bladder-type furnace body 21 disclosed in this application embodiment is a hollow spherical furnace body. In other embodiments of this application, it is a hollow ellipsoidal sphere. The two ends of the major axis of the ellipsoidal sphere are respectively connected to the feeding channel 22 and the discharging channel 23, which facilitates feeding and discharging in the furnace body. The spherical furnace body disclosed in this application embodiment is fixedly installed in the frame 1. The upper and lower ends of the spherical furnace body are respectively connected to the feeding channel 22 and the discharging channel 23. When the heating area of ​​the spherical furnace body is the same as that of other shapes of furnace bodies, the volume of the spherical furnace body is larger than that of other shapes of furnace bodies, and it can store more lime than other shapes of furnace bodies. Its heating efficiency is also much greater than that of other shapes of furnace bodies, which can greatly improve the utilization rate of energy.

[0046] Reference Figure 2The heating system 3 includes a heating component 31 and an insulation component 32 filled in the frame 1 for heat preservation of the storage baking mechanism 2 and the heating component 31. The heating system 3 heats the bladder furnace body 21 through the heating component 31. The insulation component 32 is installed in the frame 1 and fills the gaps between the storage baking mechanisms 2. In order to protect the insulation material of the insulation component 32 from damage, a protective steel plate is set around the frame 1. The insulation component 32 insulates the feeding channel 22, the bladder furnace body 21, the feeding channel 23 and the discharging channel 24, preventing heat loss and improving thermal efficiency.

[0047] Reference Figure 2 The heating assembly 31 includes two heat-resistant bodies 311 arranged around the bladder furnace body 21 and multiple heating elements 312 installed on the heat-resistant bodies 311. The heat-resistant bodies 311 are made of refractory material, and the heating elements 312 are electric heating rods made of resistance wire. The heat-resistant bodies 311 are provided with an arc-shaped surface 3111 adapted to the bladder furnace body 21. Multiple heating holes 3112 are also provided on the heat-resistant bodies 311, which are connected to the arc-shaped surface 3111. The heating elements 312 are inserted into the heating holes 3112. The heating assembly 31 is installed around the bladder furnace body 21 through the two heat-resistant bodies 311. The heat-resistant bodies 311 with heating holes 3112 heat the bladder furnace body 21, and the heat-resistant bodies without heating holes 3112 keep the bladder furnace body 21 warm, which greatly improves the heating efficiency.

[0048] Reference Figure 4 and Figure 5 Multiple heating holes 3112 on the heat-resistant body 311 are arranged in multiple rows vertically, forming a diamond-shaped arrangement. The number of heating holes 3112 in each row gradually decreases from the furnace body 21 towards the feed channel 22 and the discharge channel 23. The heat-resistant body 311 heats and bakes the furnace body 21 through the diamond-shaped arrangement of heating holes 3112. As the number of heating holes 3112 on the furnace body 21 towards the feed channel 22 decreases, the heating temperature of the feed channel 22 is lower than that of the furnace body 21, thus reducing the feeding temperature. Channel 22 preheats the lime to prevent a rapid increase in the temperature of the lime entering the bladder furnace 21, reducing the risk of damage to the bladder furnace 21 caused by lime cracking and splashing. The number of heating holes 3112 in the direction of the bladder furnace 21 toward the feeding channel 23 is reduced, so the heating temperature of the feeding channel 23 is lower than that of the bladder furnace 21. The feeding channel 23 cools and keeps the lime warm, preventing the high-temperature lime coming out of the bladder furnace 21 from quickly entering the cold air, which would cause the auxiliary material to break or pulverize, which is not conducive to its subsequent addition to the molten steel.

[0049] Reference Figure 2The number of material storage and baking mechanisms 2 is 2 or 3. The auxiliary material baking device for steelmaking is equipped with 2 or 3 material storage and baking mechanisms 2 in the frame 1, which greatly increases the amount of lime baking in a single operation. At the same time, it is beneficial to heat and keep the bladder furnace body 21 warm, thereby improving the thermal efficiency of heating and baking the bladder furnace body 21.

[0050] Reference Figure 6 and Figure 7 The steelmaking auxiliary material baking device also includes a feeding mechanism 4 for supplying materials to the storage and baking mechanism 2. The feeding mechanism 4 includes a feeding silo 41 for storing lime, and an inclined belt conveyor 42 connecting the discharge port of the feeding silo 41 to the inlet 221 of the feeding channel 22. The inlet 221 of the feeding channel 22 is designed with a shape that is larger at the top and smaller at the bottom. The larger cross-sectional area of ​​the upper layer is conducive to the lime raw material entering the bladder furnace body 21, while the smaller inlet cross-sectional area of ​​the furnace body 21 minimizes heat loss. To prevent the lime raw material from sliding down or leaking during transportation, the belt of the inclined belt conveyor 42 is equipped with a horizontal baffle and corrugated baffles on both sides of the belt to prevent leakage. The inclined belt conveyor 42 is also equipped with a protective cover 42 to prevent the lime from getting damp. 1. It also includes a dust removal system 43 connected to several feeding channels 22. The dust removal system 43 adopts an electrostatic precipitator. The dust generated when the lime raw material falls into the feeding port 221 and the dust generated during the baking process are collected by the electrostatic precipitator. The feeding mechanism 4 transports the lime in the feeding hopper 41 to the feeding channel 22 through the inclined belt conveyor 42, realizing continuous feeding of the storage and baking mechanism 2, improving the feeding efficiency. The inclined belt conveyor 42 is equipped with a lime moisture-proof cover 421. Through the dust removal system 43 connected to all feeding channels 22, the dust entering the feeding channel 22 or generated in the feeding channel 22 during the baking process is treated, improving the working environment around the operation and contributing to environmental protection.

[0051] Reference Figure 6 and Figure 7The steelmaking auxiliary material baking device also includes a discharge mechanism 5 for unloading lime from the discharge channel 24. The discharge channel 24 serves as both the storage and discharge channel for the storage baking mechanism 2. During the baking process, the lime in the discharge channel 24 is temporarily stored there, supporting the lime raw materials in the feed channel 22, the bladder furnace body 21, and the discharge channel 23. As the baked lime products stored in the discharge channel 24 are unloaded, the lime raw materials in the feed channel 22, the bladder furnace body 21, and the discharge channel 23 enter the discharge channel 24 sequentially under gravity. The frame at the outlet of the discharge channel 24... The discharge mechanism 5 is equipped with a discharge gate 25 and a gate cylinder 26 that drives the discharge gate 25 to open. The outlet of the discharge channel 24 is also equipped with a finished product box 6 containing finished lime. The discharge mechanism 5 includes a material scraping component 51, a discharge guide frame 52, and a discharge drive component 53 mounted on the discharge guide frame 52 to drive the material scraping component 51 to move. The discharge guide frame 52 is arranged opposite to the discharge channel 24. The discharge mechanism 5 drives the material scraping component 51 to move on the discharge guide frame 52 through the discharge drive component 53, thereby discharging the finished lime in the discharge channel 24, improving the discharge efficiency, realizing continuous production, and reducing the labor intensity of workers.

[0052] Reference Figure 6 and Figure 7 The material-removing assembly 51 includes a moving trolley 511 and a material-removing rake 512. The moving trolley 511 is slidably mounted on the discharge guide rail frame 52. The material-removing rake 512 is hinged to the moving trolley 511. It also includes an air spring 513 disposed between the material-removing rake 512 and the moving trolley 511. The two ends of the air spring 513 are fixedly connected to the material-removing rake 512 and the moving trolley 511, respectively. The air spring 513 is filled with compressed air, and the air bladder of the air spring 513 expands, thereby driving the material-removing rake 512 to swing, so that the material-removing rake 512 is pressed into the lime pile in the discharge channel 24 to remove material, thereby reducing the labor intensity of workers.

[0053] Reference Figure 6 and Figure 7The discharge drive assembly 53 includes a drive motor 531, which is fixedly installed at the end of the discharge guide frame 52 away from the discharge channel 24. A first rotating shaft 532 is rotatably arranged at the end of the discharge guide frame 52 near the drive motor 531. The output shaft of the drive motor 531 is fixedly connected to the first rotating shaft 532. A first sprocket 533 for transmission is provided on the first rotating shaft 532. A second rotating shaft 534 is rotatably arranged at the end of the discharge guide frame 52 away from the drive motor 531. A second sprocket 535 for transmission is provided on the second rotating shaft 534. The first sprocket 533 and the second sprocket 535 are connected by a chain 536. Both ends of the chain 536 are fixedly connected to both ends of the moving trolley 511. The chain 536 rotates, thereby moving the moving trolley 511 on the discharge guide frame 52, so that the material scraper 512 scrapes the auxiliary material from the discharge channel 24 and unloads it into the finished product box 6.

[0054] The working process of a steelmaking auxiliary material baking device is as follows: During initial feeding, to prevent lime raw materials from flowing out of the discharge channel 24, the piston rod of the gate cylinder 26 extends, the discharge gate 25 closes the outlet of the discharge channel 24, the dust removal system 43 starts working, the inclined belt conveyor 42 starts working, and the lime raw materials are transported from the feeding hopper 41 to the feeding channel 22 via the inclined belt conveyor 42. The lime raw materials fall from the feeding channel 22 and accumulate in the bladder furnace body 21, the unloading channel 23, and the discharge channel 24. The heating element 312 is energized to start heating the bladder furnace body 21 to bake the lime inside the furnace. After the lime is baked, the piston rod of the door cylinder 26 retracts, opening the discharge door 25. The drive motor 531 is started to drive the moving trolley 511 forward. The material scraper 512 enters the discharge channel 24. The air spring 513 is filled with compressed air, and the material scraper 512 swings downward to press into the lime pile. The drive motor 531 reverses, driving the moving trolley 511 to retreat, which in turn drives the material scraper 512 to scrape the finished lime out of the discharge channel 24 and unload it into the finished product box 6. The inclined belt conveyor 42 transports lime to the feeding channel 22 to replenish the lime raw materials unloaded from the bladder furnace body 21. This process is repeated continuously.

[0055] The above are all preferred embodiments of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A baking device for auxiliary materials used in steelmaking, comprising a frame (1) and a plurality of material storage and baking mechanisms (2) installed side by side within the frame (1), characterized in that: The material storage and baking mechanism (2) includes a bladder-type furnace body (21) for baking auxiliary materials, a feeding channel (22) above the bladder-type furnace body (21) and communicating with the bladder-type furnace body (21), a discharging channel (23) below the bladder-type furnace body (21) and communicating with the bladder-type furnace body (21), a horizontally arranged discharging channel (24) communicating with the discharging channel (23), and a heating system (3) installed around the bladder-type furnace body (21) for baking and heat preservation of the bladder-type furnace body (21); the bladder-type furnace body (21) is a hollow spherical furnace body, and the heating system (3) includes a heating component (31) and a heat preservation component (32) filled in the frame (1) for heat preservation of the material storage and baking mechanism (2) and the heating component (31); the heating component (31) includes Two heat-resistant bodies (311) are arranged around the bladder furnace body (21), and multiple heating elements (312) are installed on the heat-resistant bodies (311). The heat-resistant bodies (311) are provided with an arc-shaped surface (3111) adapted to the bladder furnace body (21). Multiple heating holes (3112) are also provided on the heat-resistant bodies (311) that penetrate the heat-resistant bodies (311) and communicate with the arc-shaped surface (3111). The heating elements (312) are inserted into the heating holes (3112). The multiple heating holes (3112) on the heat-resistant bodies (311) are arranged in multiple rows in the vertical direction. The multiple rows of heating holes (3112) are arranged in a diamond-shaped structure. The number of heating holes (3112) in each row gradually decreases from the bladder furnace body (21) toward the feeding channel (22) and the unloading channel (23).

2. The steelmaking auxiliary material baking device according to claim 1, characterized in that: The spherical furnace body is fixedly installed inside the frame (1) and is connected to the feeding channel (22) and the unloading channel (23) respectively.

3. A steelmaking auxiliary material baking device according to any one of claims 1 to 2, characterized in that: The number of the material storage and baking mechanism (2) is 2 or 3.

4. The steelmaking auxiliary material baking device according to claim 1, characterized in that: It also includes a feeding mechanism (4) for feeding the storage and baking mechanism (2), the feeding mechanism (4) includes a feeding bin (41) for storing auxiliary materials, an inclined belt conveyor (42) connecting the discharge port of the feeding bin (41) to the inlet (221) of the feeding channel (22), the inclined belt conveyor (42) is provided with a protective cover (421) to prevent the auxiliary materials from getting wet, and also includes a dust removal system (43) connected to several of the feeding channels (22).

5. The steelmaking auxiliary material baking device according to claim 1, characterized in that: It also includes a discharge mechanism (5) for unloading auxiliary materials from the discharge channel (24). The discharge mechanism (5) includes a material scraping assembly (51), a discharge guide frame (52), and a discharge drive assembly (53) mounted on the discharge guide frame (52) for driving the material scraping assembly (51) to move. The discharge guide frame (52) is arranged opposite to the discharge channel (24).

6. The steelmaking auxiliary material baking device according to claim 5, characterized in that: The material handling assembly (51) includes a moving trolley (511) and a material handling rake (512). The moving trolley (511) is slidably mounted on the discharge guide rail frame (52). The material handling rake (512) is hinged to the moving trolley (511). The assembly also includes an air spring (513) disposed between the material handling rake (512) and the moving trolley (511). The two ends of the air spring (513) are fixedly connected to the material handling rake (512) and the moving trolley (511) respectively. The air spring (513) drives the material handling rake (512) to swing.

7. A baking device for auxiliary materials used in steelmaking according to claim 6, characterized in that: The discharge drive assembly (53) includes a drive motor (531), which is fixedly installed at one end of the discharge guide frame (52) away from the discharge channel (24). A first rotating shaft (532) is rotatably arranged at one end of the discharge guide frame (52) near the drive motor (531). The output shaft of the drive motor (531) is fixedly connected to the first rotating shaft (532). A first sprocket (533) for transmission is provided on the first rotating shaft (532). A second rotating shaft (534) is rotatably arranged at one end of the discharge guide frame (52) away from the drive motor (531). A second sprocket (535) for transmission is provided on the second rotating shaft (534). The first sprocket (533) and the second sprocket (535) are connected by a chain (536). The two ends of the chain (536) are fixedly connected to the two ends of the moving trolley (511).

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