A baking furnace for producing prebaked anode carbon blocks

Abstract

The utility model relates to anode carbon production equipment technical field discloses a kind of baking furnace for prebaked anode carbon block production, including support, the inner wall of support is fixedly connected with box, the inner wall of box is fixedly connected with heat insulating layer, the inner wall of heat insulating layer is fixedly connected with refractory lining, the inner wall left and right sides of refractory lining are fixedly connected with flue, the inner wall of two described flue is fixedly connected with multiple spoiler, the outer wall adjacent side of two described flue is equipped with multiple outlet holes, the inner wall of box is slidably connected with inner frame. In the utility model, by the inner wall of flue fixedly connected with multiple spoiler, the flow path of high-temperature flue gas is disturbed, complex turbulent state is formed in flue, the diffusion efficiency of heat in flue is enhanced, and then heat distribution is more uniform, which creates favorable conditions for uniform baking of anode carbon block and improves the baking quality of carbon block.

Description

Technical Field

[0001] This utility model relates to the technical field of anode carbon production equipment, and in particular to a roasting furnace for producing prebaked anode carbon blocks. Background Technology

[0002] Prebaked anodes are made from petroleum coke and pitch coke as aggregates and coal tar pitch as a binder. Used as anode material in prebaked aluminum electrolysis cells, they serve a dual purpose: conducting electricity and participating in chemical reactions. These carbon blocks, after roasting, possess a stable geometric shape, hence the name prebaked anode carbon blocks, also commonly referred to as carbon anodes for aluminum electrolysis. Their quality directly affects the efficiency, energy consumption, and quality of aluminum electrolysis production. High-quality prebaked anode carbon blocks can operate stably in high-temperature, high-current electrolysis environments, effectively reducing power consumption and increasing aluminum yield and purity. The roasting furnace is a key piece of equipment in the prebaked anode carbon block production process, responsible for high-temperature roasting of the formed anode green billets.

[0003] At high temperatures, the volatiles in the anode green billet are released, and the pitch undergoes a pyrolysis and polycondensation reaction, making the carbon block structure more compact and improving its mechanical strength and conductivity. The anode carbon blocks treated in the calcination furnace have physical and chemical properties that meet the requirements of the aluminum electrolysis industry, ensuring the efficient and stable operation of the aluminum electrolysis process.

[0004] Existing roasting furnaces use multiple burners to deliver heat into the furnace. During operation, the burners spray high-temperature flames, and the heat diffuses within the furnace. However, the power adjustment of the burners is not precise enough, and some burners experience unstable combustion during operation, resulting in large fluctuations in heat output. The current solution is to distribute multiple burners in different areas. However, the airflow channel design within the furnace is inadequate, and the gas flow within the furnace forms local eddies, leading to uneven heat distribution and inconsistent carbon block quality. This affects the production efficiency and economic benefits of prebaked anode carbon blocks. Therefore, a roasting furnace for prebaked anode carbon block production is proposed to solve the above problems. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a roasting furnace for the production of prebaked anode carbon blocks, aiming to improve the problem that the airflow channel design in the furnace is poor in the existing technology, and the local vortex is formed when the gas flows in the furnace, resulting in uneven heat distribution, inconsistent carbon block quality, and affecting the production efficiency and economic benefits of prebaked anode carbon blocks.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a roasting furnace for producing prebaked anode carbon blocks, comprising a support frame, a box body fixedly connected to the inner wall of the support frame, a heat insulation layer fixedly connected to the inner wall of the box body, a refractory lining fixedly connected to the inner wall of the heat insulation layer, fire channels fixedly connected to the left and right sides of the inner wall of the refractory lining, multiple baffles fixedly connected to the inner walls of the two fire channels, multiple outlet holes opened on adjacent sides of the outer walls of the two fire channels, an inner frame slidably connected to the inner wall of the box body, multiple placement plates fixedly connected to the inner wall of the inner frame, and a furnace opening mechanism provided at the top of the support frame for opening the box body.

[0007] As a further description of the above technical solution: The furnace opening mechanism includes a mounting plate. The left side of the outer wall of the mounting plate is fixedly connected to the right side of the bracket. A servo motor is fixedly connected to the top of the mounting plate. A turntable is fixedly connected to the output end of the servo motor. A steel cable is fixedly connected to the inner wall of the turntable. A top plate is fixedly connected to the top of the bracket. Multiple pulleys are rotatably connected to the inner wall of the top plate. A box door is fixedly connected to the bottom end of the steel cable.

[0008] As a further description of the above technical solution: Two sliding bars are fixedly connected to the bottom of the inner frame, and two sliding tracks are opened at the bottom of the inner wall of the box.

[0009] As a further description of the above technical solution: An operating platform is fixedly connected to the front side of the outer wall of the bracket, and two ladder beams are fixedly connected to the front side of the outer wall of the operating platform.

[0010] As a further description of the above technical solution: Multiple steps are fixedly connected to each adjacent side of the two ladder beams, and a control box is fixedly connected to the left side of the outer wall of the bracket.

[0011] As a further description of the above technical solution: A reaction vessel is fixedly connected to the top of the control box, and an air inlet pipe is connected to the top of the reaction vessel.

[0012] As a further description of the above technical solution: An air vent is connected to the top right side of the box, and a fence is fixedly connected to the top of each of the multiple mounting plates.

[0013] As a further description of the above technical solution: Multiple partitions are fixedly connected to the top of each of the multiple placement plates, and an adsorption plate is fixedly connected to the top of the inner wall of the box.

[0014] This utility model has the following beneficial effects: 1. In this utility model, by fixing multiple baffles to the inner wall of the fire channel, the flow path of the high-temperature flue gas is disrupted, forming a complex turbulent state in the fire channel, which enhances the heat diffusion efficiency in the fire channel, thereby making the heat distribution more uniform, creating favorable conditions for the uniform roasting of the anode carbon blocks, and improving the roasting quality of the carbon blocks.

[0015] 2. In this utility model, the friction of the steel cable during sliding is greatly reduced by the setting of the pulley, making the entire pulling process smoother and more efficient, reducing power loss, improving the operating efficiency of the furnace opening mechanism, reducing component wear, and extending the service life of the equipment. Attached Figure Description

[0016] Figure 1 This is a perspective view of a roasting furnace for producing prebaked anode carbon blocks according to the present invention. Figure 2 This is a partial structural cross-sectional view of a roasting furnace for producing prebaked anode carbon blocks according to the present invention. Figure 3 This is a partial structural exploded view of a roasting furnace for producing prebaked anode carbon blocks according to the present invention; Figure 4 This is a schematic diagram of the internal frame of a roasting furnace for producing prebaked anode carbon blocks according to this utility model. Figure 5 This is a cross-sectional view of the fire channel of a roasting furnace for producing prebaked anode carbon blocks according to the present invention. Figure 6 This is a schematic diagram of the furnace opening mechanism of a roasting furnace for producing prebaked anode carbon blocks according to this utility model.

[0017] Legend: 1. Support frame; 2. Furnace opening mechanism; 201. Mounting plate; 202. Servo motor; 203. Turntable; 204. Steel cable; 205. Top plate; 206. Pulley; 207. Box door; 3. Box body; 4. Insulation layer; 5. Refractory lining; 6. Fire channel; 7. Baffle plate; 8. Outlet; 9. Inner frame; 10. Placement plate; 11. Sliding bar; 12. Slide rail; 13. Operating platform; 14. Ladder beam; 15. Step; 16. Control box; 17. Reactor; 18. Gas inlet pipe; 19. Gas outlet pipe; 20. Fence; 21. Partition plate; 22. Adsorption plate. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] See attached document Figure 1 Appendix Figure 2 and attached Figure 4 This utility model provides an embodiment of a roasting furnace for producing prebaked anode carbon blocks, including a support frame 1. The support frame 1 provides stable support for the entire equipment, ensuring stable placement. A box 3 is fixedly connected to the inner wall of the support frame 1. The box 3 is used to construct the roasting space and bear the subsequent charging and roasting operations. A heat insulation layer 4 is fixedly connected to the inner wall of the box 3. The heat insulation layer 4 can effectively block heat loss to the outside of the box 3, reduce energy consumption, and maintain a high-temperature environment inside the furnace. A refractory lining 5 is fixedly connected to the inner wall of the heat insulation layer 4. The refractory lining 5 directly bears the high temperature, protecting the heat insulation layer 4 from high-temperature damage, and at the same time helps to maintain a stable heat distribution inside the furnace. Fire channels 6 are fixedly connected to the left and right sides of the inner wall of the refractory lining 5. The fire channels 6 serve as key channels for heat generation and transmission, providing the required heat for the roasting of anode carbon blocks. Multiple baffles 7 are fixedly connected to the inner walls of the two fire channels 6. The baffles 7, through their special shape and layout, disrupt the flow path of high-temperature flue gas. To enhance the heat diffusion efficiency within the fire channel 6 and make the heat distribution more uniform, multiple outlet holes 8 are provided on adjacent sides of the outer walls of the two fire channels 6. The outlet holes 8 are used to transfer the uniformly distributed heat within the fire channel 6 to the internal space of the box 3, providing sufficient heat energy for the roasting of anode carbon blocks. An inner frame 9 is slidably connected to the inner wall of the box 3. The inner frame 9 provides a carrier for placing anode carbon blocks, facilitating loading and unloading operations. Multiple placement plates 10 are fixedly connected to the inner wall of the inner frame 9. The placement plates 10 are used to orderly place the anode carbon blocks to be roasted, ensuring that the carbon blocks are placed stably and that the heat is evenly distributed. Two sliding strips 11 are fixedly connected to the bottom of the inner frame 9. The sliding strips 11 cooperate with the sliding rails 12 to allow the inner frame 9 to slide smoothly within the box 3. Two sliding rails 12 are provided at the bottom of the inner wall of the box 3. The sliding rails 12 provide guidance for the sliding of the inner frame 9, ensuring the smooth progress of the loading and unloading process. A furnace opening mechanism 2 is provided at the top of the support 1. The furnace opening mechanism 2 is used to open the box 3. Specifically, the bottom slide bar 11 of the inner frame 9 is slidably connected to the bottom slide rail 12 of the inner wall of the box 3. The operator pushes the inner frame 9 out of the box 3 along the slide rail 12. The placement plate 10 on the inner wall of the inner frame 9 is used to place the anode carbon blocks to be roasted. After placing them, the inner frame 9 is slid back into the box 3 along the slide rail 12. Then, fuel is introduced into the fire channels 6 on the left and right sides of the inner wall of the refractory lining 5. The fuel burns violently in the fire channel 6 to produce a large amount of high-temperature flue gas. The baffle 7 on the inner wall of the fire channel 6 disrupts the flow path of the flue gas through a special layout, changing its direction and speed, so that the flue gas forms turbulence in the fire channel 6, enhancing the heat diffusion efficiency and making the heat distribution more uniform. The uniformly distributed heat is released into the internal space of the box 3 through the outlet 8 on the fire channel 6, providing heat energy for the roasting of the anode carbon blocks. At the same time, the heat insulation layer 4 inside the box 3 prevents heat from escaping to the outside, creating a stable thermal environment. The inner wall of the heat insulation layer 4 is connected to the refractory lining 5. The refractory lining 5 withstands high temperatures, protects the heat insulation layer 4, and maintains a stable heat distribution inside the furnace.

[0020] See attached document Figure 1 and attached Figure 6 The furnace opening mechanism 2 includes a mounting plate 201, which provides a mounting base for other components of the furnace opening mechanism 2, ensuring structural stability. The left side of the outer wall of the mounting plate 201 is fixedly connected to the right side of the bracket 1, making the furnace opening mechanism 2 firmly connected to the main body of the roasting furnace and enhancing the overall structural reliability. A servo motor 202 is fixedly connected to the top of the mounting plate 201. The servo motor 202 serves as the power source for the furnace opening mechanism 2, providing power output for opening the box door 207. A turntable 203 is fixedly connected to the output end of the servo motor 202. The turntable 203 converts the rotational motion of the servo motor 202 into a pulling action on the steel cable 204, realizing effective power transmission. A steel cable 204 is fixedly connected to the inner wall of the bracket 1. The steel cable 204 is wound or released when the turntable 203 rotates, and is responsible for transmitting the pulling force to the box door 207. A top plate 205 is fixedly connected to the top of the bracket 1. The top plate 205 provides an installation position for the pulley 206 to ensure that the pulley 206 can function properly. Multiple pulleys 206 are rotatably connected to the inner wall of the top plate 205. The pulleys 206 guide the direction of the steel cable 204, reduce the friction when the steel cable 204 slides, and make the pulling process smoother and more efficient. The bottom end of the steel cable 204 is fixedly connected to the box door 207. The steel cable 204 pulls the box door 207 to overcome its own weight and the friction between it and the box body 3, so as to realize the opening and closing operation of the box door 207. Specifically, when the roasting furnace needs to be opened, the furnace opening mechanism 2 is activated, and the servo motor 202 fixed at the top starts to run first, which drives the turntable 203 connected to it to rotate. During the rotation of the turntable 203, the steel cable 204 fixed on the inner wall begins to be wound. The top plate 205 at the top of the support 1 provides an installation position for the pulley 206. The steel cable 204 slides on the pulley 206, which acts as a guide to ensure that the steel cable 204 can accurately transmit the pulling force to the box door 207. At the same time, it greatly reduces the sliding friction of the steel cable 204, making the pulling process smoother and more efficient. The bottom end of the steel cable 204 is fixed to the box door 207. As the turntable 203 continues to rotate, the steel cable 204 is continuously pulled. Under the guidance of the pulley 206, the pulling force is transmitted to the box door 207. Under the action of the pulling force, the box door 207 overcomes its own weight and the friction between itself and the box body 3, and moves upward along the front side of the box body 3 until it is fully opened.

[0021] See attached document Figure 1 Appendix Figure 2 and attached Figure 4 An operating platform 13 is fixedly connected to the front of the outer wall of the support frame 1. The operating platform 13 provides the operator with a stable and suitable operating position. Two ladder beams 14 are fixedly connected to the front of the outer wall of the operating platform 13. Multiple steps 15 are fixedly connected to the adjacent side of the two ladder beams 14. The ladder beams 14 and steps 15 facilitate the operator's safe and convenient access to the operating platform 13, reducing the difficulty and danger of climbing. A control box 16 is fixedly connected to the left side of the outer wall of the support frame 1. The control box 16 can centrally control various parameters of the roasting furnace. A reaction vessel 17 is fixedly connected to the top of the control box 16. The reaction vessel 17 can be used to carry out specific chemical reactions to meet the adjustment requirements of gas composition or material properties in the roasting process. The top of the reaction vessel 17 is connected to a gas inlet pipe 18, which can introduce the required gas into the reaction vessel. 17. Provide necessary reactants. The top right side of the box 3 is connected to an exhaust pipe 19, which can discharge the waste gas generated during the roasting process in the box 3, ensuring a stable gas environment inside the furnace and preventing the accumulation of waste gas from affecting the roasting effect. The top of multiple placement plates 10 is fixedly connected to a fence 20, which can prevent the prebaked anode carbon blocks placed on the placement plates 10 from slipping during the charging, roasting or unloading process, ensuring the safe placement of the carbon blocks. The top of multiple placement plates 10 is fixedly connected to multiple partitions 21, which can divide the placement plates 10 into different areas, which helps to neatly arrange the prebaked anode carbon blocks, improve space utilization and facilitate uniform heat transfer. The top of the inner wall of the box 3 is fixedly connected to an adsorption plate 22, which can adsorb impurities generated during the roasting process, improve the air quality inside the furnace and reduce environmental pollution. Specifically, the operating platform 13 on the support 1, combined with the ladder beam 14 and steps 15, provides a safe and convenient operating environment for operators, facilitating monitoring and control. The control box 16 can centrally control various parameters. The reaction tank 17 on its top introduces gas through the gas inlet pipe 18 to carry out specific chemical reactions, in order to meet the adjustment requirements of the roasting process for gas composition or material properties. The box 3 discharges waste gas through the gas outlet pipe 19 to maintain a stable gas environment inside the furnace and prevent waste gas from affecting roasting. The railing 20 on the placement plate 10 ensures the safety of the charcoal blocks. The partition 21 improves space utilization and helps to transfer heat evenly. The adsorption plate 22 on the top of the inner wall of the box 3 purifies the air inside the furnace, adsorbs impurities, and reduces environmental pollution.

[0022] Working Principle: Before the calcining furnace starts operating, the entire equipment is supported on the ground by the bracket 1. During loading, the inner frame 9 is slidably connected to the bottom of the box 3 via two sliding strips 11 fixedly connected to the bottom, and two sliding tracks 12 opened at the bottom of the inner wall. The operator pushes the inner frame 9 smoothly out of the box 3 along the sliding tracks 12. Multiple placement plates 10 are fixedly connected to the inner wall of the inner frame 9. The operator places the anode carbon blocks to be calcined in an orderly manner on the placement plates 10. After loading is completed, the inner frame 9 is pushed again to make it slide smoothly into the box 3 along the sliding tracks 12. When the loading is completed, the calcination process starts immediately. The fuel is introduced into the fire channels 6 located on the left and right sides of the inner wall of the refractory lining 5. The fire channels 6 are the key channels for heat generation and transmission. The fuel burns violently in the fire channels 6, producing a large amount of high-temperature flue gas. At this time, the inner wall of the fire channels 6 is fixedly connected to the inner wall of the refractory lining 5. Multiple baffles 7, through their special shapes and layouts, disrupt the original flow path of the high-temperature flue gas, changing its flow direction and speed, causing the flue gas to form a complex turbulent state within the fire channel 6. This turbulence greatly enhances the heat diffusion efficiency within the fire channel 6, making the heat distribution more uniform. The uniformly distributed heat after the action of the baffles 7 is continuously released into the internal space of the box 3 through the outlet holes 8 on the fire channel 6, providing sufficient heat energy for the roasting of the anode carbon blocks. At the same time, the heat insulation layer 4 inside the box 3 can effectively prevent heat from escaping to the external environment of the box 3, creating a stable thermal environment for the high-temperature roasting process. The inner wall of the heat insulation layer 4 is also fixedly connected to the refractory lining 5. The refractory lining 5 directly withstands the high-temperature test, protecting the heat insulation layer 4 from high-temperature damage and helping to maintain a stable heat distribution inside the furnace. Furthermore, when the roasting furnace needs to be started, the furnace opening mechanism 2 begins to operate. First, the servo motor 202 fixed at the top starts running, and the turntable 203 begins to rotate under the drive of the servo motor 202. As the turntable 203 rotates, the steel cable 204 fixedly connected to its inner wall begins to be gradually wound. The top plate 205 is fixedly connected to the top of the support 1, and the top plate 205 provides the mounting position for the pulley 206. The steel cable 204 slides on the pulley 206, and the pulley 206 guides the direction of the steel cable 204, enabling it to accurately transmit the tension to the pulley. The door 207 is connected to the box door 207. Meanwhile, the pulley 206 greatly reduces the friction of the steel cable 204 when sliding, making the entire pulling process smoother and more efficient. The bottom end of the steel cable 204 is fixedly connected to the box door 207. As the turntable 203 continues to rotate, the steel cable 204 is continuously pulled. Under the guidance of the pulley 206, the steel cable 204 transmits the pulling force to the box door 207. Under the action of this pulling force, the box door 207 overcomes its own weight and the friction between itself and the box body 3, and moves upward along the front side of the box body 3, finally realizing the full opening of the box door 207.

[0023] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A roasting furnace for producing prebaked anode carbon blocks, comprising a support frame (1), characterized in that: The inner wall of the support (1) is fixedly connected to a box (3), the inner wall of the box (3) is fixedly connected to a heat insulation layer (4), the inner wall of the heat insulation layer (4) is fixedly connected to a refractory lining (5), the inner wall of the refractory lining (5) is fixedly connected to fire channels (6) on both the left and right sides, the inner walls of the two fire channels (6) are fixedly connected to multiple baffles (7), the outer walls of the two fire channels (6) are provided with multiple outlet holes (8) on adjacent sides, the inner wall of the box (3) is slidably connected to an inner frame (9), the inner wall of the inner frame (9) is fixedly connected to multiple placement plates (10), the top of the support (1) is provided with a furnace opening mechanism (2), the furnace opening mechanism (2) is used to open the box (3).

2. The roasting furnace for producing prebaked anode carbon blocks according to claim 1, characterized in that: The furnace opening mechanism (2) includes a mounting plate (201). The outer left side of the mounting plate (201) is fixedly connected to the right side of the bracket (1). A servo motor (202) is fixedly connected to the top of the mounting plate (201). A turntable (203) is fixedly connected to the output end of the servo motor (202). A steel cable (204) is fixedly connected to the inner wall of the turntable (203). A top plate (205) is fixedly connected to the top of the bracket (1). Multiple pulleys (206) are rotatably connected to the inner wall of the top plate (205). A box door (207) is fixedly connected to the bottom end of the steel cable (204).

3. The roasting furnace for producing prebaked anode carbon blocks according to claim 1, characterized in that: The bottom of the inner frame (9) is fixedly connected to two slide bars (11), and the bottom of the inner wall of the box (3) has two slide rails (12).

4. The roasting furnace for producing prebaked anode carbon blocks according to claim 1, characterized in that: An operating table (13) is fixedly connected to the front side of the outer wall of the bracket (1), and two ladder beams (14) are fixedly connected to the front side of the outer wall of the operating table (13).

5. A roasting furnace for producing prebaked anode carbon blocks according to claim 4, characterized in that: Multiple steps (15) are fixedly connected to each adjacent side of the two ladder beams (14), and a control box (16) is fixedly connected to the left side of the outer wall of the bracket (1).

6. A roasting furnace for producing prebaked anode carbon blocks according to claim 5, characterized in that: The top of the control box (16) is fixedly connected to a reaction vessel (17), and the top of the reaction vessel (17) is connected to an air inlet pipe (18).

7. A roasting furnace for producing prebaked anode carbon blocks according to claim 1, characterized in that: The top right side of the box (3) is connected to an air outlet pipe (19), and the top of each of the multiple mounting plates (10) is fixedly connected to a fence (20).

8. A roasting furnace for producing prebaked anode carbon blocks according to claim 1, characterized in that: Multiple partitions (21) are fixedly connected to the top of each of the multiple placement plates (10), and an adsorption plate (22) is fixedly connected to the top of the inner wall of the box (3).

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