High-uniformity aluminum ash high-temperature calcination device and method based on pyrogenic process purification

Abstract

The invention relates to the technical field of aluminum ash high-temperature calcination, in particular to a high-uniformity aluminum ash high-temperature calcination device and method based on pyrogenic process purification. The furnace body is covered with an isolation shell, and the isolation shell is provided with a feeding port, a discharging port, a first guide plate, a driving unit, a second guide plate and a cooling shell. The feeding hole is formed in the side wall of the isolating shell; the discharge port is formed in the side wall of the isolation shell and is positioned below the feed port; the first guide plate is rotationally arranged between the feed port and the discharge port; the driving unit is arranged on one side of the first guide plate and used for driving the first guide plate to rotate; the second guide plate is arranged at the lower part of the discharge hole; and the cooling shell is arranged on the discharge hole. The probability that the aluminum ash drifts everywhere when being discharged into the furnace body is reduced, hindrance generated when the discharging state of the furnace body is switched is avoided, the cooling efficiency is improved, and the workload is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of high-temperature calcination of aluminum ash, and in particular to a device and method for high-temperature calcination of high-uniformity aluminum ash based on pyrolysis purification. Background Art

[0002] Aluminum ash is primarily calcined at high temperatures in rotary calcining kilns. Existing technologies do not effectively process and reuse secondary aluminum ash, preventing the formation of a complete process chain and ecosystem. The treatment process still generates large amounts of waste gas and waste residue, but their resource utilization is low, resulting in no added value.

[0003] Chinese patent publication number CN116558279A discloses a rotary calcining kiln, which specifically includes a bottom plate, an electric rotating disk, a rotary calcining kiln and a support frame arranged outside the rotary calcining kiln. The support frame located at the top of the rotary calcining kiln is provided with a plurality of pulleys that are slidably connected to the rotary calcining kiln. The support frame located at the bottom of the rotary calcining kiln is provided with a plurality of rotating shafts that abut against the rotary calcining kiln. A transmission motor is provided on the support frame, and the output shaft of the transmission motor is coaxially connected to one of the rotating shafts. The bottom of the support frame is provided with a plurality of pulleys that are slidably connected to the rotary calcining kiln. A table is provided, one end of the support frame is rotatably connected to the table, hydraulic rods are provided on the top of the table on both sides of the support frame, the telescopic ends of the hydraulic rods are fixedly connected to the side of the support frame, a feed barrel is provided at one end of the rotary calcining kiln located at the connection between the support frame and the table, a feeding assembly is provided on the feed barrel, an air supply port is provided at the other end of the rotary calcining kiln, a plurality of hydraulic cylinders are provided on the top of the base plate, the tops of the telescopic rods of the plurality of hydraulic cylinders are fixedly connected to the electric rotating disk, and a table is fixedly provided on the top of the electric rotating disk.

[0004] The above scheme provides a rotary calcining kiln structure, which has only one opening, that is, aluminum ash can only be fed and discharged through the opening. During use, especially when feeding, the interior of the rotary calcining kiln body is usually in a high temperature state, so during the feeding process, the aluminum ash entering the rotary calcining kiln body will start to react first. The rotary calcining kiln body is in a connected state with the outside world. Ammonia and other harmful gases will be produced during the calcination of aluminum ash. Therefore, the open rotary calcining kiln body is prone to leakage of harmful gases during the feeding process. At the same time, most of the existing rotary calcining kiln bodies do not have an automatic feeding mechanism. This is because the opening of the rotary calcining kiln body is tilted upward during calcination, and the opening is tilted downward during discharging. The traditional automatic feeding mechanism cannot adapt to the state switching of the rotary calcining kiln body during feeding and discharging, and after discharging, the aluminum ash needs to be transported to the cooling equipment by a forklift for cooling. Summary of the Invention

[0005] To address the above-mentioned problems, a high-temperature calcination device and method for high-uniformity aluminum ash purified by pyrolysis are provided. By providing an isolation shell on the outside of the furnace body, the amount of heat energy dissipated during furnace calcination is reduced, as is the amount of toxic gas leakage and the impact of flowing air on the aluminum ash in the feed. A rotatable first guide plate is provided at the feed inlet of the isolation shell. The rotation of the first guide plate allows the first guide plate to extend into the furnace opening during feeding, reducing the probability of aluminum ash scattering when entering the furnace. Furthermore, after feeding is completed, the first guide plate is driven upward by a drive unit and withdrawn from the furnace opening. Upon completion of calcination, the furnace body can rotate freely without being obstructed by the first guide plate. Furthermore, aluminum ash discharged from the furnace body passes directly through a second guide plate into a cooling shell for cooling. Since the next calcination operation of the furnace body requires 6 to 8 hours, the aluminum ash in the cooling shell also has a cooling time of 6 to 8 hours, ensuring that the aluminum ash in the cooling shell is fully cooled.

[0006] In order to solve the problems of the prior art, the present invention provides a high-temperature calcination device for high-uniformity aluminum ash based on pyrometallurgical purification, comprising a furnace body with an opening at one end; an isolation shell is provided on the outer cover of the furnace body, and a feed port, a discharge port, a first guide plate, a drive unit, a second guide plate and a cooling shell are provided on the isolation shell; the feed port is opened on the side wall of the isolation shell; the discharge port is opened on the side wall of the isolation shell and is located below the feed port; the first guide plate is rotatably arranged between the feed port and the discharge port, and when the furnace body opening is tilted upward, the first guide plate tilts downward toward the furnace body, and when the furnace body opening is tilted downward, the first guide plate tilts upward toward the furnace body; the drive unit is arranged on one side of the first guide plate and is used to drive the first guide plate to rotate; the second guide plate is arranged at the lower part of the discharge port, and the second guide plate tilts upward toward the furnace body and is used to guide the discharge of the calcined aluminum ash; the cooling shell is arranged on the discharge port and is used to temporarily store the calcined aluminum ash.

[0007] Preferably, the driving unit includes a first linear drive, a lifting frame, a first lifting wheel and a slide groove; the first linear drive is vertically arranged on the upper part of the isolation shell, and the output end of the first linear drive extends to the inside of the isolation shell; the lifting frame is fixedly arranged on the output end of the first linear drive; the first lifting wheel is rotatably arranged on the lifting frame; the slide groove is opened on the side wall of the first guide plate along the extension direction of the first guide plate, and the first lifting wheel is rollingly arranged in the slide groove.

[0008] Preferably, the interior of the cooling shell is a cylindrical cavity, and the cooling shell is provided with a first spiral blade, a first rotary driver and a valve body; the first spiral blade is arranged in the cylindrical cavity of the cooling shell and rotates in a horizontal direction; the first rotary driver is horizontally arranged at the end of the cooling shell and is used to drive the first spiral blade to rotate; the valve body is arranged on the side wall of the cooling shell away from the isolation shell, and the valve body is located at the lower part of the cooling shell.

[0009] Preferably, an air inlet and an air outlet are provided on the cooling shell; the air inlet is located on the side of the cooling shell away from the isolation shell; the air outlet is located on the side of the cooling shell close to the isolation shell, and the air inlet and the air outlet are both located on the upper part of the cooling shell, and the air intake volume of the air inlet is the same as the air outlet volume of the air outlet.

[0010] Preferably, a ventilation groove is provided through the first spiral blade.

[0011] Preferably, a cooling pipe is provided on the outside of the cooling shell, and a coolant is stored in the cooling pipe.

[0012] Preferably, the aluminum ash high-temperature calcining device also includes a second linear drive, a guide rail, a hinged seat and a mounting seat; the second linear drive is vertically arranged on the upper part of the isolation shell; the guide rail is fixedly arranged on the side wall of the furnace body along the extension direction of the furnace body; the hinged seat is fixedly arranged on the bottom of the isolation shell and hinged to the furnace body; the mounting seat is slidingly arranged on the guide rail along the extension direction of the guide rail, the mounting seat passes through the guide rail, and a second lifting wheel is rotatably arranged on the mounting seat, the second lifting wheel is located below the guide rail and rollingly cooperates with the guide rail, and the mounting seat is hinged to the output end of the second linear drive.

[0013] Preferably, a purification pipe for extracting air from the isolation shell is provided on the upper portion of the isolation shell.

[0014] Preferably, a feeding unit is provided at the feeding port, and the feeding unit includes a second rotary drive, a feeding shell, a second spiral blade and a feeding port; the second rotary drive is horizontally arranged on one side of the isolation shell; the feeding shell is horizontally fixedly arranged on the feeding port, and the second rotary drive is arranged at the end of the feeding shell; the second spiral blade is horizontally rotatably arranged in the feeding shell, and the second rotary drive is used to drive the second spiral blade to rotate; the feeding port is opened at the upper part of the feeding shell.

[0015] The present invention also relates to a high-temperature calcination method for high-uniformity aluminum ash based on pyrolysis purification, which uses a high-temperature calcination device for high-uniformity aluminum ash based on pyrolysis purification, and the specific steps are as follows: S1. The opening of the furnace body is tilted upward, and the first guide plate is tilted downward and extended into the opening of the furnace body. Aluminum ash is put into the first guide plate, and the first guide plate guides the aluminum ash into the interior of the furnace body; S2. After the aluminum ash is fed, the driving unit drives the first guide plate to rotate upward, and the first guide plate is withdrawn from the opening of the furnace body. The furnace body calcines the aluminum ash for 6 to 8 hours; S3. After the calcination is completed, the furnace body rotates. After the rotation, the opening of the furnace body tilts downward. The calcined aluminum ash is guided by the second guide plate and discharged from the discharge port into the cooling shell for cooling. The aluminum ash entering the cooling shell can be discharged before the next batch of aluminum ash enters.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention reduces the amount of heat dissipated during calcination by providing an isolation shell on the outside of the furnace body, while also reducing the amount of toxic gas overflow and the impact of flowing air on the aluminum ash in the feed. A rotatable first guide plate is provided on the feed port of the isolation shell. Through the rotation of the first guide plate, the first guide plate can extend into the opening of the furnace body when the furnace body is feeding, reducing the probability of aluminum ash floating when entering the furnace body. At the same time, after the feeding is completed, the first guide plate rotates upward under the drive of the driving unit and withdraws from the opening of the furnace body. When the furnace body completes calcination, the furnace body can rotate freely without being hindered by the first guide plate. At the same time, the aluminum ash discharged from the furnace body directly enters the cooling shell through the second guide plate for cooling. Since the furnace body needs 6 to 8 hours for the next calcination operation, the aluminum ash in the cooling shell also has a cooling time of 6 to 8 hours, ensuring that the aluminum ash in the cooling shell can be fully cooled. In summary, the present invention not only reduces the probability of aluminum ash being scattered when discharged into the furnace body, but also avoids the obstruction of the furnace body when switching the discharge state. At the same time, the discharged aluminum ash can be directly immersed in the cooling shell for cooling without the need for transportation, thereby improving the cooling efficiency and reducing the workload. 2. By setting up a purification pipe, an air inlet and an exhaust port are respectively opened on the cooling shell, so that the air intake volume of the air inlet is the same as the exhaust volume of the exhaust port. When feeding, aluminum ash is put into the feeding shell from the feeding port, and the second spiral blade is driven to rotate by the second rotary drive to discharge the aluminum ash into the first guide plate. The second rotary drive is preferably a servo motor. When the purification pipe draws out the air in the isolation shell, the outside air flows from the feeding port to the feeding port, thereby avoiding the overflow of toxic gases. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a three-dimensional schematic diagram of a high-temperature calcination device for high-uniformity aluminum ash purified by pyrolysis according to the present invention; Figure 2 This is a three-dimensional schematic diagram of the high-temperature calcination device for high-uniformity aluminum ash purified by pyrolysis of the present invention after removing part of the isolation shell. Figure 1 ; Figure 3 The invention is a high-temperature calcination device for high-uniformity aluminum ash purified by pyrolysis. Figure 2 A partial enlarged schematic diagram of point A in the middle; Figure 4 The invention is a high-temperature calcination device for high-uniformity aluminum ash purified by pyrolysis. Figure 2 A partial enlarged schematic diagram of point B in the middle; Figure 5 This is a three-dimensional schematic diagram of the high-temperature calcination device for high-uniformity aluminum ash purified by pyrolysis of the present invention after removing part of the isolation shell. Figure 2 ; Figure 6The invention is a high-temperature calcination device for high-uniformity aluminum ash purified by pyrolysis. Figure 5 A partial enlarged schematic diagram of point C in the middle; Figure 7 This is a side view of a high-temperature calcination device for high-uniformity aluminum ash based on pyrometallurgical purification according to the present invention; Figure 8 The invention is a high-temperature calcination device for high-uniformity aluminum ash purified by pyrolysis. Figure 7 Schematic cross-sectional view at DD in the middle; Figure 9 It is a cutaway perspective schematic diagram of a high-temperature calcination device for high-uniformity aluminum ash purified by pyrolysis according to the present invention; Figure 10 This is a three-dimensional schematic diagram of the high-temperature calcination device for high-uniformity aluminum ash purified by pyrolysis according to the present invention, with the isolation shell removed; Figure 11 It is a three-dimensional schematic diagram of the opening of the furnace body of the high-temperature calcination device for high-uniformity aluminum ash purified by pyrolysis according to the present invention when it is tilted downward.

[0018] The numbers in the figure are: 1. furnace body; 11. opening; 12. second linear drive; 13. guide rail; 14. hinged seat; 15. mounting seat; 151. second lifting wheel; 2. isolation shell; 21. feed port; 22. discharge port; 23. first guide plate; 24. drive unit; 241. first linear drive; 242. lifting frame; 243. first lifting wheel; 244. slide; 25. second guide plate; 26. cooling shell; 261. first spiral blade; 262. first rotary drive; 263. valve body; 264. air inlet; 265. exhaust port; 266. ventilation groove; 267. cooling pipe; 27. feeding unit; 271. second rotary drive; 272. feeding shell; 273. second spiral blade; 274. feeding port; 3. purification pipe. DETAILED DESCRIPTION

[0019] In order to further understand the features, technical means, specific objectives and functions achieved by the present invention, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0020] Reference Figure 1-Figure 3 、 Figure 5 、 Figure 7 and Figure 8: A high-temperature calcining device for high-uniformity aluminum ash based on pyrometallurgical purification includes a furnace body 1 with an opening 11 at one end; an isolation shell 2 is provided on the outer cover of the furnace body 1, and a feed port 21, a discharge port 22, a first guide plate 23, a drive unit 24, a second guide plate 25 and a cooling shell 26 are provided on the isolation shell 2; the feed port 21 is opened on the side wall of the isolation shell 2; the discharge port 22 is opened on the side wall of the isolation shell 2 and is located below the feed port 21; the first guide plate 23 is rotatably arranged between the feed port 21 and the discharge port 22 When the opening 11 of the furnace body 1 is tilted upward, the first guide plate 23 is tilted downward toward the furnace body 1, and when the opening 11 of the furnace body 1 is tilted downward, the first guide plate 23 is tilted upward toward the furnace body 1; the driving unit 24 is arranged on one side of the first guide plate 23 and is used to drive the first guide plate 23 to rotate; the second guide plate 25 is arranged at the lower part of the discharge port 22, and the second guide plate 25 is tilted upward toward the furnace body 1 and is used to guide the discharge of the calcined aluminum ash; the cooling shell 26 is arranged on the discharge port 22 and is used to temporarily store the calcined aluminum ash.

[0021] In the traditional pyrometallurgical aluminum ash calcining process, the aluminum ash is mainly calcined in an aluminum ash rotary calcining kiln. For the sake of convenience, the aluminum ash rotary calcining kiln body 1 is referred to as the furnace body 1 in the following text. The furnace body 1 is usually provided with only one opening 11, and the opening 11 is used for feeding and discharging. The existing furnace body 1 is an open structure, that is, the toxic gas generated by the furnace body 1 when calcining the aluminum ash will overflow through the opening 11. Although a purification device is provided near the opening 11 of the furnace body 1 in the prior art, the purification device can extract the air near the opening 11 of the furnace body 1, thereby achieving the purpose of removing the toxic gas. However, since the furnace body 1 is an open structure, when the poisonous gas overflows from the opening 11 of the furnace body 1, some of the poisonous gas cannot be extracted by the purification equipment, resulting in some poisonous gas still diffusing to the surrounding of the furnace body 1. If you want to improve the purification effect of the purification equipment under the existing furnace body 1 structure, you need to make the purification equipment closer to the opening 11 of the furnace body 1 during extraction. However, the closer to the opening 11 of the furnace body 1, the higher the temperature of the drawn gas, which makes the purification equipment susceptible to high temperature damage. At the same time, it will also cause the heat energy in the furnace body 1 to be lost quickly, resulting in high energy consumption. In addition, when the existing furnace body 1 calcines aluminum ash, the orientation of the opening 11 of the furnace body 1 is different during feeding and discharging. When the furnace body 1 is in the feeding state, the opening 11 on the furnace body 1 is tilted upward, and when the furnace body 1 is in the discharging state, the opening 11 on the furnace body 1 is tilted downward. Therefore, the furnace body 1 needs to switch the state by rotating when feeding or discharging. Therefore, the existing feeding mechanism cannot meet the feeding requirements of the furnace body 1. This is because aluminum ash is mostly powdery, so the feeding mechanism needs to be extended into the opening 11 of the furnace body 1 when feeding, otherwise the aluminum ash will float everywhere during feeding, and after the furnace body 1 completes calcination, the calcined aluminum ash is first discharged into a container specially used to store high-temperature aluminum ash, and then transported by a forklift to the cooling equipment for cooling, which is less efficient.

[0022] In order to avoid the above situation, the structure of the existing aluminum ash high-temperature calcining device is optimized so that when the furnace body 1 needs to be fed, the aluminum ash can be directly fed into the furnace body 1, reducing the probability of the aluminum ash floating everywhere when it is discharged into the furnace body 1. At the same time, before the furnace body 1 needs to be discharged, the first guide plate 23 can rotate by itself and withdraw from the opening 11 of the furnace body 1 without hindering the rotation of the furnace body 1. At the same time, when the furnace body 1 discharges the calcined aluminum ash, there is no need for a forklift to transport it. The aluminum ash can be discharged into the cooling shell 26 by itself for cooling, reducing the workload. The specific structure and working process of the present invention are as follows: when in use, the opening 11 of the furnace body 1 is first tilted upward, and then the first guide plate 23 is tilted downward toward the furnace body 1 so that the first guide plate 23 can extend into the opening 11 of the furnace body 1, and then the aluminum ash is thrown onto the first guide plate 23. Under the guidance of the first guide plate 23, the aluminum ash smoothly enters from the opening 11 of the furnace body 1, avoiding the situation that the aluminum ash floats everywhere during the process of being thrown into the furnace body 1. When the feeding is completed, the first guide plate 23 is driven by the driving unit 24 to rotate upward, and the first guide plate 23 is withdrawn from the opening 11 of the furnace body 1. Then the furnace body 1 starts to heat and calcine the aluminum ash. The time for the furnace body 1 to heat and calcine the aluminum ash is usually between 6 and 8 hours. After the calcination is completed, the furnace body 1 is rotated and tilted downward, and the furnace body 1 The opening 11 is switched from tilted upward to tilted downward, and the aluminum ash in the furnace body 1 is discharged to the second guide plate 25 through the tilted downward opening 11. Under the guidance of the second guide plate 25, the second guide plate 25 guides the aluminum ash to the cooling shell 26. The cooling shell 26 collects and cools the aluminum ash, avoiding the traditional process of transporting the aluminum ash by a forklift after discharge, reducing the workload. Then the furnace body 1 is rotated again, and the opening 11 on the furnace body 1 is rotated from tilted downward to tilted upward. The first guide plate 23 is driven by the drive unit 24 to rotate downward again, and the first guide plate 23 is inserted into the opening 11 of the furnace body 1, and a certain amount of aluminum ash is again placed on the first guide plate 23. The first guide plate 23 guides the aluminum ash into the furnace body 1, and the furnace body 1 calcines the aluminum ash, and the cycle is repeated. It is worth noting that when the furnace body 1 calcines the aluminum ash, the aluminum ash in the cooling shell 26 has sufficient cooling time. This is because the calcination time of the furnace body 1 is usually between 6 and 8 hours. Therefore, before the aluminum ash calcined in the furnace body 1 is discharged, the previous batch of aluminum ash can be temporarily stored in the cooling shell 26 for cooling, ensuring the cooling effect of the aluminum ash.

[0023] By arranging an isolation shell 2 on the outside of the furnace body 1, the dissipation of heat energy during calcination of the furnace body 1 is reduced, and the overflow of toxic gases is also reduced. A rotatable first guide plate 23 is provided on the feed port 21 of the isolation shell 2. Through the rotation of the first guide plate 23, the first guide plate 23 can extend into the opening 11 of the furnace body 1 when the furnace body 1 is feeding, thereby reducing the probability of aluminum ash floating when entering the furnace body 1. At the same time, after the feeding is completed, the first guide plate 23 is driven by the driving unit 24 to rotate upward, and the first guide plate 23 is withdrawn from the opening 11 of the furnace body 1. When the furnace body 1 completes calcination, the furnace body 1 can rotate freely without being hindered by the first guide plate 23. At the same time, the aluminum ash discharged from the furnace body 1 directly enters the cooling shell 26 through the second guide plate 25 for cooling. Since the next calcination operation of the furnace body 1 requires 6 to 8 hours, the aluminum ash in the cooling shell 26 also has a cooling time of 6 to 8 hours, ensuring that the aluminum ash in the cooling shell 26 can be fully cooled. In summary, the present invention not only reduces the probability of aluminum ash scattering everywhere when discharged into the furnace body 1, but also avoids the obstruction when the furnace body 1 is switched to the discharge state. At the same time, the discharged aluminum ash can be directly immersed in the cooling shell 26 for cooling without the need for transportation, thereby improving the cooling efficiency and reducing the workload.

[0024] Reference Figure 2 and Figure 3 : The driving unit 24 includes a first linear drive 241, a lifting frame 242, a first lifting wheel 243 and a slide 244; the first linear drive 241 is vertically arranged on the upper part of the isolation shell 2, and the output end of the first linear drive 241 extends to the inside of the isolation shell 2; the lifting frame 242 is fixedly arranged on the output end of the first linear drive 241; the first lifting wheel 243 is rotatably arranged on the lifting frame 242; the slide 244 is opened on the side wall of the first guide plate 23 along the extension direction of the first guide plate 23, and the first lifting wheel 243 is rollingly arranged in the slide 244.

[0025] Since the isolation shell 2 covers the furnace body 1, when the furnace body 1 calcines aluminum ash at high temperature, the heat in the furnace body 1 will accumulate in the isolation shell 2. Although the calcination effect of the furnace body 1 is improved and the thermal energy utilization rate is improved, it is impossible to use the traditional driving method to drive the first guide plate 23. This is because the first guide plate 23 needs to extend into the opening 11 of the furnace body 1 when transporting the aluminum ash into the furnace body 1. Using a traditional motor to drive the first guide plate 23 is easily affected by high temperature, so the first linear drive 241 is set at the upper part of the isolation shell 2, and the lifting frame 242, the first lifting wheel 243 and the slide groove 244 cooperate together, so that the output end of the first linear drive 241 can rotate normally when it is extended and retracted. At the same time, since the first linear drive 241 is at a certain distance from the opening 11 of the furnace body 1, the influence of high temperature on the operation of the first linear drive 241 is reduced.

[0026] Reference Figure 5 and Figure 9 : The interior of the cooling shell 26 is a cylindrical cavity, and the cooling shell 26 is provided with a first spiral blade 261, a first rotation driver 262 and a valve body 263; the first spiral blade 261 is arranged to rotate horizontally in the cylindrical cavity of the cooling shell 26; the first rotation driver 262 is horizontally arranged at the end of the cooling shell 26 and is used to drive the first spiral blade 261 to rotate; the valve body 263 is arranged on the side wall of the cooling shell 26 away from the isolation shell 2, and the valve body 263 is located at the lower part of the cooling shell 26.

[0027] In the process of the furnace body 1 pouring out the calcined aluminum ash, the aluminum ash is first discharged into the second guide plate 25, and then discharged from the discharge port 22 under the guidance of the second guide plate 25. At this time, the first rotary driver 262 drives the first spiral blade 261 to rotate synchronously. Driven by the first spiral blade 261, the aluminum ash discharged into the cooling shell 26 will not accumulate at one end of the cooling shell 26, but will be evenly distributed at the bottom of the cooling shell 26. The valve body 263 arranged at the bottom of the cooling shell 26 is in a closed state. When the furnace body 1 completes discharging, the furnace body 1 rotates again, and the opening 11 of the furnace body 1 switches from tilted downward to tilted upward. It is worth noting that the rotation speed of the first spiral blade 261 needs to be preset. Since the amount of aluminum ash put into the furnace body 1 at a time is constant, the time required for the furnace body 1 to discharge the aluminum ash each time will not be significantly different. In actual use, the time for the aluminum ash to be discharged will fluctuate due to the influence of the amount of aluminum ash put in, so the time for the aluminum ash to be discharged needs to be separately detected. Since the length of the cooling shell 26 is constant, after detecting the time when the aluminum ash is completely discharged, the rotation speed of the first spiral blade 261 can be calculated, ensuring that the aluminum ash can be evenly distributed in the cooling shell 26. The aluminum ash discharged at a time can remain in the cooling shell 26 for at least 6 hours. This is because the furnace body 1 still needs 6 to 8 hours to calcine the next batch of aluminum ash. Before the next batch of aluminum ash is discharged, the cooled aluminum ash can be discharged in advance. When the cooled aluminum ash needs to be discharged, the valve body 263 is opened and the first spiral blade 261 continues to rotate, so that the aluminum ash is discharged smoothly through the valve body 263.

[0028] Reference Figure 8 : An air inlet 264 and an air outlet are provided on the cooling shell 26; the air inlet 264 is located on the side of the cooling shell 26 away from the isolation shell 2; the air outlet is located on the side of the cooling shell 26 close to the isolation shell 2, and the air inlet 264 and the air outlet are both located at the upper part of the cooling shell 26, and the air intake volume of the air inlet 264 is the same as the air outlet volume of the air outlet.

[0029] After the furnace body 1 is charged with materials, the air inlet 264 and the air outlet are both in a closed state. When all the calcined aluminum ash is discharged into the cooling shell 26, the air inlet 264 starts to take in air, and the air inlet 264 starts to discharge air into the cooling shell 26. The air flow flows in the cooling shell 26 and cools the aluminum ash in the cooling shell 26.

[0030] Reference Figure 9 A ventilation groove 266 is formed through the first spiral blade 261 .

[0031] By providing the ventilation groove 266 on the first spiral blade 261 , the flow smoothness of the airflow discharged into the cooling shell 26 is improved, thereby improving the air cooling effect.

[0032] Reference Figure 10 A cooling pipe 267 is provided on the outside of the cooling shell 26 , and a cooling liquid is stored in the cooling pipe 267 .

[0033] When the aluminum ash is cooled, the coolant in the cooling pipe 267 flows, and under the dual effects of liquid cooling and air cooling, it is ensured that the aluminum ash in the cooling shell 26 can be cooled quickly.

[0034] Reference Figure 4 、 Figure 6 and Figure 8 : The aluminum ash high-temperature calcining device also includes a second linear drive 12, a guide rail 13, a hinged seat 14 and a mounting seat 15; the second linear drive 12 is vertically arranged on the upper part of the isolation shell 2; the guide rail 13 is fixedly arranged on the side wall of the furnace body 1 along the extension direction of the furnace body 1; the hinged seat 14 is fixedly arranged on the bottom of the isolation shell 2 and is hinged to the furnace body 1; the mounting seat 15 is slidingly arranged on the guide rail 13 along the extension direction of the guide rail 13, and the mounting seat 15 passes through the guide rail 13. A second lifting wheel 151 is rotatably arranged on the mounting seat 15. The second lifting wheel 151 is located below the guide rail 13 and rolls with the guide rail 13. The mounting seat 15 is hinged to the output end of the second linear drive 12.

[0035] The second linear actuator 12, by extending its output end, causes the mounting base 15 to rotate the furnace body 1 via the second lifting wheel 151 and the guide rail 13. Both the first linear actuator 241 and the second linear actuator 12 are linear hydraulic cylinders. Positioning the second linear actuator 12 outside the isolation shell 2 protects it from the high temperature of the furnace body 1, ensuring its normal operation.

[0036] Reference Figure 1 、 Figure 2 and Figure 9 A purification pipe 3 for extracting air from the isolation shell 2 is provided on the upper part of the isolation shell 2.

[0037] A purification device is provided at one end of the purification pipe 3 away from the isolation shell 2. The purification pipe 3 starts to extract the air in the isolation shell 2 before feeding. The extraction volume is controlled at 50-100 cubic meters / hour. When the extraction volume is 50-100 cubic meters / hour, the air flow rate is slow. When feeding, it is not easy for aluminum ash to be lifted up by the air flow.

[0038] Reference Figure 5 、 Figure 9 and Figure 10 : A feeding unit 27 is provided at the feeding port 21, and the feeding unit 27 includes a second rotary driver 271, a feeding shell 272, a second spiral blade 273 and a feeding port 274; the second rotary driver 271 is horizontally arranged on one side of the isolation shell 2; the feeding shell 272 is horizontally fixedly arranged on the feeding port 21, and the second rotary driver 271 is arranged at the end of the feeding shell 272; the second spiral blade 273 is horizontally rotatably arranged in the feeding shell 272, and the second rotary driver 271 is used to drive the second spiral blade 273 to rotate; the feeding port 274 is opened at the upper part of the feeding shell 272.

[0039] During feeding, aluminum ash is fed into the feeding shell 272 from the feeding port 274, and the second spiral blade 273 is driven to rotate by the second rotary driver 271, so that the aluminum ash is discharged into the first guide plate 23. The second rotary driver 271 is preferably a servo motor. When the purification pipe 3 draws out the air in the isolation shell 2, the outside air flows from the feeding port 274 to the feeding port 21, thereby avoiding the overflow of toxic gases.

[0040] Reference Figures 1-11 The present invention also relates to a high-temperature calcination method for high-uniformity aluminum ash based on pyrolysis purification, which uses a high-temperature calcination device for high-uniformity aluminum ash based on pyrolysis purification, and the specific steps are as follows: S1. The opening 11 of the furnace body 1 is tilted upward, and the first guide plate 23 is tilted downward and extended into the opening 11 of the furnace body 1. Aluminum ash is put into the first guide plate 23, and the first guide plate 23 guides the aluminum ash into the interior of the furnace body 1; S2. After the aluminum ash is fed, the driving unit 24 drives the first guide plate 23 to rotate upward, and the first guide plate 23 is withdrawn from the opening 11 of the furnace body 1. The furnace body 1 calcines the aluminum ash for 6 to 8 hours. S3. After the calcination is completed, the furnace body 1 rotates. After the rotation, the opening 11 of the furnace body 1 tilts downward, and the calcined aluminum ash is guided by the second guide plate 25 and discharged from the discharge port 22 into the cooling shell 26 for cooling. The aluminum ash entering the cooling shell 26 can be discharged before the next batch of aluminum ash enters.

[0041] Working principle: When in use, first tilt the opening 11 of the furnace body 1 upward, then tilt the first guide plate 23 downward toward the furnace body 1 so that the first guide plate 23 can extend into the opening 11 of the furnace body 1, and then put the aluminum ash on the first guide plate 23. Under the guidance of the first guide plate 23, the aluminum ash smoothly enters from the opening 11 of the furnace body 1, avoiding the aluminum ash from flying everywhere during the process of being put into the furnace body 1. When the feeding is completed, the first guide plate 23 rotates upward under the drive of the driving unit 24, and the first guide plate 23 is withdrawn from the opening 11 of the furnace body 1. Then the furnace body 1 starts to heat and calcine the aluminum ash. The time for the furnace body 1 to heat and calcine the aluminum ash is usually between 6 and 8 hours. After the calcination is completed, the furnace body 1 rotates and tilts downward, and the opening 11 of the furnace body 1 is opened. The upward tilt is switched to the downward tilt, and the aluminum ash in the furnace body 1 is discharged to the second guide plate 25 through the downward tilt opening 11. Under the guidance of the second guide plate 25, the second guide plate 25 guides the aluminum ash to the cooling shell 26. The cooling shell 26 collects and cools the aluminum ash, avoiding the traditional process of transporting the aluminum ash by a forklift after discharge, reducing the workload. Then the furnace body 1 is rotated again, and the opening 11 on the furnace body 1 is rotated from downward tilt to upward tilt. The first guide plate 23 is driven by the drive unit 24 to rotate downward again, and the first guide plate 23 is inserted into the opening 11 of the furnace body 1, and a certain amount of aluminum ash is again placed on the first guide plate 23. The first guide plate 23 guides the aluminum ash into the furnace body 1, and the furnace body 1 calcines the aluminum ash, and the cycle is repeated. It is worth noting that when the furnace body 1 calcines the aluminum ash, the aluminum ash in the cooling shell 26 has sufficient cooling time. This is because the calcination time of the furnace body 1 is usually between 6 and 8 hours. Therefore, before the aluminum ash calcined in the furnace body 1 is discharged, the previous batch of aluminum ash can be temporarily stored in the cooling shell 26 for cooling, ensuring the cooling effect of the aluminum ash.

[0042] The above embodiments merely represent one or more embodiments of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of protection of the present invention. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present invention, and such modifications and improvements fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be subject to the appended claims.

Claims

1. A high-temperature calcination device for high-uniformity aluminum ash based on pyrolysis purification, comprising a furnace body (1) with an opening (11) provided at one end; characterized in that: An isolation shell (2) is provided on the outer cover of the furnace body (1), and a feed port (21), a discharge port (22), a first guide plate (23), a drive unit (24), a second guide plate (25) and a cooling shell (26) are provided on the isolation shell (2); the feed port (21) is provided on the side wall of the isolation shell (2); the discharge port (22) is provided on the side wall of the isolation shell (2) and is located below the feed port (21); the first guide plate (23) is rotatably provided between the feed port (21) and the discharge port (22), and when the opening (11) of the furnace body (1) is tilted upward, The first guide plate (23) is tilted downward toward the furnace body (1), and when the opening (11) of the furnace body (1) is tilted downward, the first guide plate (23) is tilted upward toward the furnace body (1); the driving unit (24) is arranged on one side of the first guide plate (23) and is used to drive the first guide plate (23) to rotate; the second guide plate (25) is arranged at the lower part of the discharge port (22), the second guide plate (25) is tilted upward toward the furnace body (1) and is used to guide the discharge of the calcined aluminum ash; the cooling shell (26) is arranged on the discharge port (22) and is used to temporarily store the calcined aluminum ash.

2. The high-temperature calcination device for high-uniformity aluminum ash based on pyrolysis purification according to claim 1 is characterized in that: The driving unit (24) includes a first linear driver (241), a lifting frame (242), a first lifting wheel (243) and a slide groove (244); the first linear driver (241) is vertically arranged on the upper part of the isolation shell (2), and the output end of the first linear driver (241) extends into the interior of the isolation shell (2); the lifting frame (242) is fixedly arranged on the output end of the first linear driver (241); the first lifting wheel (243) is rotatably arranged on the lifting frame (242); the slide groove (244) is opened on the side wall of the first guide plate (23) along the extension direction of the first guide plate (23), and the first lifting wheel (243) is rollingly arranged in the slide groove (244).

3. The high-temperature calcination device for high-uniformity aluminum ash based on pyrolysis purification according to claim 1 is characterized in that: The interior of the cooling shell (26) is a cylindrical cavity, and the cooling shell (26) is provided with a first spiral blade (261), a first rotation driver (262) and a valve body (263); the first spiral blade (261) is arranged in the cylindrical cavity of the cooling shell (26) to rotate in a horizontal direction; the first rotation driver (262) is arranged horizontally at the end of the cooling shell (26) and is used to drive the first spiral blade (261) to rotate; the valve body (263) is arranged on the side wall of the cooling shell (26) away from the isolation shell (2), and the valve body (263) is located at the lower part of the cooling shell (26).

4. The high-temperature calcination device for high-uniformity aluminum ash based on pyrolysis purification according to claim 3 is characterized in that: An air inlet (264) and an air outlet are provided on the cooling shell (26); the air inlet (264) is located on a side of the cooling shell (26) away from the isolation shell (2); the air outlet is located on a side of the cooling shell (26) close to the isolation shell (2), the air inlet (264) and the air outlet are both located at the upper part of the cooling shell (26), and the air intake volume of the air inlet (264) is the same as the air outlet volume of the air outlet.

5. The high-temperature calcination device for high-uniformity aluminum ash based on pyrolysis purification according to claim 4 is characterized in that: A ventilation groove (266) is provided through the first spiral blade (261).

6. The high-temperature calcination device for high-uniformity aluminum ash based on pyrolysis purification according to claim 1 is characterized in that: A cooling pipe (267) is provided on the outside of the cooling shell (26), and a cooling liquid is stored in the cooling pipe (267).

7. The high-temperature calcination device for high-uniformity aluminum ash based on pyrolysis purification according to claim 1 is characterized in that: The aluminum ash high-temperature calcining device further comprises a second linear drive (12), a guide rail (13), a hinge seat (14) and a mounting seat (15); the second linear drive (12) is vertically arranged on the upper part of the isolation shell (2); the guide rail (13) is fixedly arranged on the side wall of the furnace body (1) along the extension direction of the furnace body (1); the hinge seat (14) is fixedly arranged at the bottom of the isolation shell (2) and is hinged to the furnace body (1); the mounting seat (15) is slidably arranged on the guide rail (13) along the extension direction of the guide rail (13), the mounting seat (15) penetrates the guide rail (13), and a second lifting wheel (151) is rotatably arranged on the mounting seat (15), the second lifting wheel (151) is located below the guide rail (13) and is in rolling engagement with the guide rail (13), and the mounting seat (15) is hinged to the output end of the second linear drive (12).

8. The high-temperature calcination device for high-uniformity aluminum ash based on pyrolysis purification according to claim 1, characterized in that: A purification pipe (3) for extracting air from the isolation shell (2) is provided on the upper portion of the isolation shell (2).

9. The high-temperature calcination device for high-uniformity aluminum ash based on pyrolysis purification according to claim 8, characterized in that: A feeding unit (27) is provided at the feeding port (21), and the feeding unit (27) comprises a second rotary driver (271), a feeding shell (272), a second spiral blade (273), and a feeding port (274); the second rotary driver (271) is horizontally arranged on one side of the isolation shell (2); the feeding shell (272) is horizontally fixedly arranged on the feeding port (21), and the second rotary driver (271) is arranged at the end of the feeding shell (272); the second spiral blade (273) is horizontally rotatably arranged in the feeding shell (272), and the second rotary driver (271) is used to drive the second spiral blade (273) to rotate; and the feeding port (274) is opened at the upper part of the feeding shell (272).

10. A method for high-temperature calcination of high-uniformity aluminum ash based on pyrolysis purification, using the high-temperature calcination device for high-uniformity aluminum ash based on pyrolysis purification according to any one of claims 1 to 9, characterized in that: The specific steps are as follows: S1, the opening (11) of the furnace body (1) is tilted upward, the first guide plate (23) is tilted downward and extends into the opening (11) of the furnace body (1), aluminum ash is put into the first guide plate (23), and the first guide plate (23) guides the aluminum ash into the interior of the furnace body (1); S2. After the aluminum ash is fed, the driving unit (24) drives the first guide plate (23) to rotate upward, and the first guide plate (23) is withdrawn from the opening (11) of the furnace body (1). The furnace body (1) calcines the aluminum ash for 6 to 8 hours; S3. After the calcination is completed, the furnace body (1) rotates. After the rotation, the opening (11) of the furnace body (1) tilts downward, and the calcined aluminum ash is guided by the second guide plate (25) and discharged from the discharge port (22) into the cooling shell (26) for cooling. The aluminum ash entering the cooling shell (26) can be discharged before the next batch of aluminum ash enters.

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