Calcining device and method for feeding air into calcining device

Abstract

This application provides a calcination apparatus and a method for introducing gas into the calcination apparatus. The calcination apparatus includes a kiln and a sagger disposed within the kiln. The kiln also includes a side air inlet and a roller conveyor. The roller conveyor drives the sagger to move along a first direction. The sagger includes two legs spaced apart along the first direction, forming an opening between the two legs that communicates with the interior of the sagger. The side air inlet is configured to open when it aligns with the opening in the first direction and close when it aligns with a leg. This application allows the gas introduced through the side air inlet to be directly supplied to the ternary material inside the sagger, reducing gas waste and improving gas utilization. Furthermore, it facilitates the replacement of waste gas accumulated near the sagger, improving gas flow within the sagger and thus enhancing the calcination quality of the ternary material.

Description

Technical Field

[0001] This application relates to battery cathode material preparation technology, and more particularly to a calcination apparatus and a method for introducing gas into the calcination apparatus. Background Technology

[0002] With the advancement of technology, new energy material battery technology is developing rapidly; among them, using ternary materials as the cathode material of batteries is a major development direction. In the production process of battery cathode materials, calcination is a very important step, which largely determines the electrochemical performance of the material and affects the final battery performance.

[0003] The calcination of ternary materials is typically carried out in kilns such as roller kilns. During calcination, the ternary material is placed in a sagger and then placed entirely into the kiln. Specific gases (such as dry air, oxygen, or nitrogen) are introduced into the kiln to create the required process atmosphere. During the calcination process, some waste gases (such as water vapor and carbon dioxide) are released. If these waste gases accumulate near the sagger, they will affect the calcination quality of the ternary material.

[0004] In related technical solutions, to reduce the impact of exhaust gas on the calcination of ternary materials, one approach is to continuously increase the intake and exhaust volumes to improve gas flow and dilute the concentration of exhaust gas within the kiln; however, this method increases calcination costs. Another approach is to reduce the amount of ternary material contained in the kiln, thereby reducing exhaust gas emissions at the source; however, this method affects the kiln's production capacity. Summary of the Invention

[0005] In order to overcome the above-mentioned defects in related technologies, the purpose of this application is to provide a calcination apparatus and a gas intake method for the calcination apparatus. This application improves the gas intake method and enhances the gas flow near the sagger, thereby improving the calcination quality of ternary materials.

[0006] On one hand, this application provides a calcination apparatus, including a kiln and a sagger disposed in the kiln. The kiln is also provided with a side air inlet and a roller conveyor. The roller conveyor is used to drive the sagger to move along a first direction. The sagger includes two legs spaced apart along the first direction. An opening communicating with the interior of the sagger is formed between the two legs. The side air inlet is configured to be open when the side air inlet corresponds to the opening in the first direction and closed when the side air inlet corresponds to the leg.

[0007] Optionally, in the calcination apparatus described above, along the first direction, the kiln contains a plurality of saggers that abut against each other; along the first direction, the kiln also contains a plurality of side air inlets, with adjacent side air inlets equally spaced; the opening time of the side air inlets satisfies the following: In the formula, x is the length of the support leg in the first direction; y is the length of the opening in the first direction; v is the traveling speed of the roller conveyor in the first direction; n is the number of the sagger in the first direction, and is a positive integer; a is the distance between the first side air inlet in the first direction and the nearest sagger in the initial state; τ is the distance between two adjacent side air inlets in the first direction; and m is the number of the side air inlet in the first direction, and is a positive integer.

[0008] In the calcination apparatus described above, optionally, along the first direction, if the distance between two adjacent side air inlets is an integer multiple of the length of the sagger, and multiple side air inlets open or close simultaneously, then the opening time of the side air inlets satisfies: .

[0009] Optionally, in the calcination apparatus described above, a control mechanism communicating with the side air inlet is provided on the outside of the side air inlet. The control mechanism includes a drive member, a sleeve, and a piston. The sleeve is provided with an air outlet communicating with the side air inlet and an air inlet for connecting to an external air source. The piston is disposed inside the sleeve, and the drive member is connected to the piston to drive the piston to move inside the sleeve.

[0010] The air inlet is located within the stroke range of the piston, and the air outlet is located outside the stroke range of the piston; when the side air inlet corresponds to the opening in the first direction, the piston is located outside the air inlet to expose the air inlet; when the side air inlet corresponds to the support leg, the piston covers the air inlet.

[0011] Optionally, in the calcination apparatus described above, the driving component includes a crank and a slider. The first end of the crank is connected to a drive motor, and the second end of the crank is connected to the slider. The slider is slidably disposed within the sleeve, and the slider is connected to the piston via a piston rod.

[0012] In the calcination apparatus described above, optionally, two saggers are stacked one on top of the other along a second direction, and in the second direction, the side air inlet corresponds to the opening of the lower sagger;

[0013] Wherein, the first direction and the second direction are perpendicular to each other.

[0014] Optionally, the calcination apparatus described above includes a first sidewall and a second sidewall arranged opposite each other along a third direction. The first sidewall and the second sidewall are each provided with a plurality of side air inlets, and the plurality of side air inlets on the first sidewall correspond one-to-one with the plurality of side air inlets on the second sidewall.

[0015] Along the third direction, a plurality of the saggers are provided between the first sidewall and the second sidewall;

[0016] Among them, the first direction, the second direction, and the third direction are perpendicular to each other.

[0017] On the other hand, this application provides a method for inlet gas into a calcining apparatus, comprising:

[0018] The dimensions of the sagger along the first direction, the position parameters of the side air inlet in the kiln along the first direction, and the travel speed of the roller conveyor along the first direction are obtained.

[0019] Based on the dimensional parameters of the sagger along the first direction, the position parameters of the side air inlet in the kiln along the first direction, and the traveling speed of the roller conveyor along the first direction, the state of the side air inlet is controlled so that it is open when the side air inlet corresponds to the opening of the sagger in the first direction, and closed when the side air inlet corresponds to the support leg of the sagger.

[0020] Optionally, in the calcination apparatus air intake method described above, along the first direction, the kiln contains a plurality of saggers that abut against each other; along the first direction, the kiln also contains a plurality of side air inlets, with adjacent side air inlets equally spaced; the opening time of the side air inlets satisfies the following: In the formula, x is the length of the support leg in the first direction; y is the length of the opening in the first direction; v is the traveling speed of the roller conveyor in the first direction; n is the number of the sagger, and is a positive integer; a is the distance between the first side air inlet in the first direction and the nearest sagger in the initial state; τ is the distance between two adjacent side air inlets in the first direction; and m is the number of the side air inlet, and is a positive integer.

[0021] In the calcination apparatus air intake method described above, optionally, along the first direction, if the distance between two adjacent side air intakes is an integer multiple of the length of the sagger, and multiple side air intakes open or close simultaneously, then the opening time of the side air intakes satisfies: .

[0022] This application provides a calcination apparatus and a method for introducing gas into the calcination apparatus. The calcination apparatus includes a kiln and a sagger disposed within the kiln. The kiln also includes a side air inlet and a roller conveyor. The roller conveyor drives the sagger to move along a first direction. The sagger includes two legs spaced apart along the first direction, forming an opening between the two legs that communicates with the interior of the sagger. The side air inlet is configured to open when it aligns with the opening in the first direction and close when it aligns with a leg. By configuring the side air inlet to open when it aligns with the opening and close when it aligns with a leg in the first direction, this application allows the gas introduced through the side air inlet to be directly supplied to the ternary material inside the sagger, reducing gas waste and improving gas utilization. Furthermore, it facilitates the replacement of waste gas accumulated near the sagger, improving gas flow within the sagger and thus enhancing the calcination quality of the ternary material. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments or related technologies of this application, the accompanying drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 A simplified structural diagram of a calcination apparatus provided in one embodiment of this application;

[0025] Figure 2 for Figure 1 Top view;

[0026] Figure 3 for Figure 1 The main view;

[0027] Figure 4 A simplified diagram of the mating structure of the sagger and roller conveyor provided in an embodiment of this application;

[0028] Figure 5 A simplified structural diagram of a control mechanism provided in one embodiment of this application;

[0029] Figure 6 A flowchart of a calcination apparatus air intake method provided in an embodiment of this application;

[0030] Figure 7 A timing diagram of the opening and closing of a side air inlet provided in an embodiment of this application;

[0031] Figure 8 This diagram shows a comparison between the gas intake method of the calcining apparatus provided in an embodiment of this application and the gas intake method of the calcining apparatus in related technologies.

[0032] Figure label:

[0033] 100 - Kiln; 101 - First side wall; 102 - Second side wall; 103 - Bottom wall; 104 - Top wall; 110 - Side air inlet; 120 - Roller conveyor;

[0034] 200 - Sagger; 210 - Leg; 220 - Opening;

[0035] 310 - Sleeve; 311 - Air outlet; 312 - Air inlet; 320 - Piston; 330 - Crank; 340 - Slider; 350 - Piston rod;

[0036] X - First direction; Y - Second direction; Z - Third direction. Detailed Implementation

[0037] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this application, but not all embodiments.

[0038] Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this application. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0039] As described in the background section, ternary materials generate waste gas during calcination. This waste gas accumulates near the sagger, affecting the contact between the introduced gas and the ternary material, thus impacting the calcination quality. While continuously increasing the intake and exhaust volumes can dilute the waste gas concentration in the kiln, it also removes a significant amount of heat, increasing calcination costs. Reducing the amount of ternary material, on the other hand, would affect the kiln's production capacity.

[0040] In view of this, the embodiments of this application aim to provide a calcination apparatus and a method for inletting gas into the calcination apparatus. By configuring the side air inlet of the kiln to open when corresponding to the opening of the sagger in a first direction and close when corresponding to the support leg of the sagger, the gas introduced through the side air inlet can be directly supplied to the ternary material inside the sagger, reducing gas waste and improving gas utilization. It also facilitates the replacement of waste gas accumulated near the sagger, improving gas flow within the sagger, thereby improving the calcination quality of the ternary material. Compared to methods that continuously increase the intake and exhaust volume, the embodiments of this application can reduce the amount of gas introduced and reduce heat loss within the kiln, enhancing the overall heating efficiency of the kiln and reducing thermal energy costs. Compared to methods that reduce the amount of ternary material, this application is beneficial for increasing the kiln's production capacity.

[0041] The embodiments of this application will now be described in detail with reference to the accompanying drawings, so that those skilled in the art can gain a more detailed understanding of the contents of this application.

[0042] In the description of this embodiment, the first direction X, the second direction Y, and the third direction Z are three different directions that are perpendicular to each other in three-dimensional space. The first direction X can be, for example, the length direction of the kiln 100, the second direction Y can be, for example, the height direction of the kiln 100, and the third direction Z can be, for example, the width direction of the kiln 100.

[0043] Figure 1 A simplified structural diagram of a calcination apparatus provided in one embodiment of this application; Figure 2 for Figure 1 Top view; Figure 3 for Figure 1 The main view; Figure 4 A simplified diagram of the fit between the sagger and the roller conveyor provided in one embodiment of this application.

[0044] Please refer to Figures 1-4 This embodiment provides a calcination apparatus, including a kiln 100 and a sagger 200 disposed in the kiln 100. The kiln 100 may be equipped with a heating device to calcine the ternary material placed in the sagger 200.

[0045] Specifically, in this embodiment, the kiln 100 is arranged along the first direction X. The kiln 100 includes a bottom wall 103, a first side wall 101, a second side wall 102, and a top wall 104. The first side wall 101 and the second side wall 102 are both perpendicular to the bottom wall 103, and the first side wall 101 and the second side wall 102 are arranged opposite each other along the third direction Z. The first side wall 101 and the second side wall 102 are provided with multiple side air inlets 110. The top wall 104 may be provided with an exhaust port. The gas introduced by the external gas source enters the kiln 100 through the side air inlets 110, participates in the calcination reaction of the ternary materials in the sagger 200, and is then discharged from the exhaust port on the top wall 104, thereby maintaining the stable gas pressure inside the kiln 100. The kiln 100 has an inlet and an outlet at both ends along the first direction X. The kiln 100 is also equipped with a roller conveyor 120, which is used to drive the sagger 200 to move along the first direction X. The sagger 200 is put into the kiln 100 from the inlet, and is calcined while moving in the kiln 100 with the roller conveyor 120, and is finally taken out from the outlet.

[0046] The sagger 200 in this embodiment includes a bottom wall and multiple side walls. The number of side walls can be varied according to the shape of the bottom wall, as long as the multiple side walls can be connected end to end to form a closed shape. Optionally, in this embodiment, the bottom wall of the sagger 200 is square, and the sagger 200 has four side walls. Two legs 210 are provided on the side of the side wall away from the bottom wall, and an opening 220 is formed between the two legs 210 to communicate with the interior of the sagger 200. When the sagger 200 moves in the kiln 100, the side walls of the sagger 200 are parallel to the first side wall 101 and the second side wall 102. The side air inlet 110 of the kiln 100 is configured to open when the side air inlet 110 corresponds to the opening 220 in the first direction X, and close when the side air inlet 110 corresponds to the leg 210.

[0047] In this embodiment, the side air inlet 110 is configured to open when it corresponds to the opening 220 in the first direction X and close when it corresponds to the support leg 210. This allows the gas introduced through the side air inlet 110 to be directly supplied to the ternary material inside the sagger 200, reducing gas waste and improving gas utilization. It also helps to replace the waste gas accumulated near the sagger 200, improving the gas flow within the sagger 200 and thus improving the calcination quality of the ternary material.

[0048] In this embodiment, air is not circulated when the side air inlet 110 aligns with the support leg 210, resulting in higher gas utilization and reduced ventilation costs. Compared to continuous ventilation, this embodiment reduces the amount of gas introduced into the kiln, thereby reducing heat loss, enhancing overall kiln heating efficiency, and lowering thermal energy costs. Compared to methods that reduce the amount of ternary materials, this embodiment is beneficial for increasing kiln capacity.

[0049] In one possible implementation, along the first direction X, the kiln 100 is provided with a plurality of saggers 200, which abut against each other; that is, the side walls of two adjacent saggers 200 are in contact with each other. Along the first direction X, the kiln 100 is also provided with a plurality of side air inlets 110, which are equally spaced from each other.

[0050] If the length of the support leg 210 in the first direction X is x, and the length of the opening 220 in the first direction X is y, then the positions of the two ends of the opening 220 on the nth sagger 200 in the first direction X are respectively , The roller conveyor 120 travels at a speed of v along the first direction X. The position of the sagger 200 within the kiln 100 changes continuously. The positions of the two ends of the opening 220 on the nth sagger 200 along the first direction X are respectively... , If the distance between the first side air inlet 110 and the crucible 200 is *a*, and the distance between two adjacent side air inlets 110 is *τ*, then the position of the *m*th side air inlet is... In the first direction X, the side air intake 110 opens when it corresponds to the opening 220, therefore, it is concluded that... After analysis, it can be concluded that the opening time of the side air intake 110 meets the following requirements: In the formula, x is the length of the support leg 210 in the first direction X; y is the length of the opening 220 in the first direction X; v is the traveling speed of the roller conveyor 120 in the first direction X; n is the number of the sagger 200 in the first direction X, and is a positive integer; a is the distance between the first side air inlet 110 in the first direction X and the nearest sagger 200 in the initial state; τ is the distance between two adjacent side air inlets 110 in the first direction X; and m is the number of the side air inlet 110 in the first direction X, and is a positive integer.

[0051] The aforementioned multiple saggers 200 can be numbered sequentially according to their direction of travel; the corresponding multiple side air inlets 110 can also be numbered sequentially according to the direction of travel of the saggers 200. The initial state can be when multiple saggers 200 are outside the entrance of the kiln 100 in the first direction X, and the first sagger 200 has just reached the entrance of the kiln 100; at this time, the distance between the first side air inlet 110 (i.e., the side air inlet 110 numbered 1) and the nearest sagger 200 (i.e., the sagger 200 numbered 1) is a.

[0052] In this embodiment, when the side air inlets 110 are set at equal intervals, the opening and closing time of each side air inlet 110 can be calculated, thereby facilitating better control of the gas entering from the side air inlets 110 and improving the calcination quality of the ternary material.

[0053] Furthermore, along the first direction X, if the distance between two adjacent side air inlets 110 is an integer multiple of the length of the crucible 200 (e.g., 1, 2, 3 times, etc.), and multiple side air inlets 110 open or close simultaneously, then the opening time of the side air inlets 110 in this embodiment satisfies: This embodiment can control the simultaneous opening or closing of multiple side air inlets 110, thereby helping to reduce control costs.

[0054] In this embodiment, the multiple side air inlets 110 on the first side wall 101 are arranged in a one-to-one correspondence with the multiple side air inlets 110 on the second side wall 102, which helps to further reduce control costs.

[0055] In other possible implementations, if the interval between two adjacent side air inlets 110 is not equal, the opening and closing time of each side air inlet 110 needs to be determined according to its actual position, so that the side air inlet 110 is opened when it corresponds to the opening 220 in the first direction X, and closed when it corresponds to the support leg 210.

[0056] In this embodiment, a control element such as a solenoid valve can be installed in the side air inlet 110. The solenoid valve is connected to the controller via wired or wireless means. The controller controls the opening and closing of the solenoid valve, thereby controlling the gas to enter the side air inlet 110.

[0057] Figure 5 A simplified structural diagram of a control mechanism provided in one embodiment of this application. Please refer to... Figure 5 In one possible implementation, this embodiment can also employ a mechanical control mechanism to control the gas entering the side air inlet 110. Specifically, the control mechanism can be connected to the outside of the side air inlet 110. The control mechanism includes a drive member, a sleeve 310, and a piston 320. The sleeve 310 is provided with an air outlet 311 connected to the side air inlet 110 and an air inlet 312 for connecting to an external air source. The piston 320 is disposed inside the sleeve 310, and the drive member is connected to the piston 320 to drive the piston 320 to move within the sleeve 310.

[0058] In this embodiment, the air inlet 312 is located within the stroke range of the piston 320, and the air outlet 311 is located outside the stroke range of the piston 320. When the upper air inlet 110 in the first direction X corresponds to the opening 220, the piston 320 is located outside the air inlet 312 to expose the air inlet 312, allowing gas input from an external gas source to enter the kiln 100. When the side air inlet 110 corresponds to the support leg 210, the piston 320 blocks the air inlet 312 to prevent gas from entering the kiln 100.

[0059] Furthermore, the driving component in this embodiment includes a crank 330 and a slider 340. The first end of the crank 330 is connected to a drive motor, and the second end of the crank 330 is connected to the slider 340. The slider 340 is slidably disposed within the sleeve 310, and the slider 340 is connected to the piston 320 via a piston rod 350. When the crank 330 rotates, it can drive the slider 340 to slide within the sleeve 310, thereby driving the piston 320 to reciprocate within its stroke range to control the opening or closing of the side air intake 110.

[0060] In this embodiment, two saggers 200 are stacked vertically along the second direction Y. In the second direction Y, the side air inlet 110 corresponds to the opening 220 of the lower sagger 200. This arrangement allows gas to continuously flow through the gaps between the saggers 200 and into the space between the two saggers 200, enhancing the gas renewal rate on the surface of the material in the lower sagger 200 and improving the calcination quality of the ternary material within the lower sagger 200.

[0061] Along the third direction Z, in this embodiment, a plurality of saggers 200 are provided between the first sidewall 101 and the second sidewall 102. Figure 1Three saggers 200 are provided between the first side wall 101 and the second side wall 102. Those skilled in the art will understand that the specific number of saggers 200 can be selected as needed.

[0062] Figure 6 This is a flowchart illustrating the gas intake method for a calcination apparatus provided in one embodiment of this application. Please refer to... Figure 6 This embodiment also provides a method for introducing air into a calcining apparatus, which can be implemented based on the above-mentioned calcining apparatus. The method includes:

[0063] Step S110: Obtain the dimensional parameters of the sagger 200 along the first direction X, the position parameters of the side air inlet 110 in the kiln 100 along the first direction X, and the traveling speed of the roller conveyor 120 along the first direction X.

[0064] Step S120: Based on the dimensional parameters of the sagger 200 along the first direction X, the position parameters of the side air inlet 110 in the kiln 100 along the first direction X, and the traveling speed of the roller conveyor 120 along the first direction X, control the state of the side air inlet 110 so that it is open when it corresponds to the opening 220 of the sagger 200 in the first direction X, and closed when it corresponds to the support leg 210 of the sagger 200.

[0065] In this embodiment, by opening the side air inlet 110 when it corresponds to the opening 220 in the first direction X and closing it when it corresponds to the support leg 210, the gas introduced through the side air inlet 110 can be directly supplied to the ternary material in the sagger 200, reducing gas waste and improving gas utilization; it also helps to replace the waste gas accumulated near the sagger 200, improve the gas flow in the sagger 200, and thus improve the calcination quality of the ternary material.

[0066] In one possible implementation, along the first direction X, the kiln 100 is provided with a plurality of saggers 200, which abut against each other; along the first direction X, the kiln 100 is also provided with a plurality of side air inlets 110, with adjacent side air inlets 110 being equally spaced. The opening time of the side air inlets 110 then satisfies: In the formula, x is the length of the support leg 210 in the first direction X; y is the length of the opening 220 in the first direction X; v is the traveling speed of the roller conveyor 120 in the first direction X; n is the number of the sagger 200 in the first direction X, and is a positive integer; a is the distance between the first side air inlet 110 in the first direction X and the nearest sagger 200 in the initial state; τ is the distance between two adjacent side air inlets 110 in the first direction X; and m is the number of the side air inlet 110 in the first direction X, and is a positive integer.

[0067] Furthermore, along the first direction X, if the distance between two adjacent side air inlets 110 is an integer multiple of the length of the crucible 200, and multiple side air inlets 110 open or close simultaneously, then the opening time of the side air inlets 110 satisfies: .

[0068] Figure 7 This is a timing diagram of the opening and closing of a side air inlet provided in an embodiment of this application. Figure 7 In the diagram, state "1" indicates that the side air intake 110 is open, and state "0" indicates that the side air intake 110 is closed. Figure 7 In the indicated state, multiple side air inlets 110 within the kiln 100 can be arranged at equal intervals, and the distance between two adjacent side air inlets 110 is an integer multiple of the length of the sagger 200. The multiple side air inlets 110 within the kiln 100 can be arranged as follows: Figure 7 The timing diagram shown indicates that the system is turned on or off synchronously.

[0069] Figure 8 This diagram shows a comparison between the gas intake method of the calcining apparatus provided in an embodiment of this application and the gas intake method of the calcining apparatus in related technologies. Figure 8 The comparative example employs a method of continuously increasing intake and exhaust volume, resulting in a total intake volume equal to that of the intake method used in this embodiment. For example... Figure 8 As shown, with the continuous increase in the number of circulation cycles of the sagger within the kiln, the gas retention rate in the kiln using the gas intake method of this embodiment is much higher than that using the comparative method. This demonstrates that the gas intake method of the calcining apparatus in this embodiment is beneficial for replacing the waste gas accumulated near the sagger, improving the gas flow within the sagger, and thus improving the calcination quality of the ternary materials.

[0070] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0071] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0072] It should be noted that in the description of this application, the terms "first" and "second" are used only for convenience in describing different components and should not be construed as indicating or implying a sequential relationship, relative importance, or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of those features.

[0073] The embodiments or implementation methods in this application are described in a progressive manner. Each embodiment focuses on the differences from other embodiments, and the same or similar parts between the embodiments can be referred to each other.

[0074] In the description of this application, the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with an embodiment or example that are included in at least one embodiment or example of this application. In this application, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0075] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A calcination apparatus, characterized in that, The system includes a kiln (100) and a sagger (200) disposed within the kiln (100). The kiln (100) is also provided with a side air inlet (110) and a roller conveyor (120). The roller conveyor (120) is used to drive the sagger (200) to move along a first direction. The sagger (200) includes two legs (210) spaced apart along the first direction. An opening (220) communicating with the interior of the sagger (200) is formed between the two legs (210). The side air inlet (110) is configured to be open when the side air inlet (110) corresponds to the opening (220) in the first direction, and closed when the side air inlet (110) corresponds to the leg (210). Along the first direction, the kiln (100) is provided with a plurality of saggers (200), which abut against each other; along the first direction, the kiln (100) is also provided with a plurality of side air inlets (110), with adjacent side air inlets (110) equally spaced; the opening time of the side air inlets (110) satisfies: In the formula, x is the length of the support leg (210) in the first direction; y is the length of the opening (220) in the first direction; v is the traveling speed of the roller conveyor (120) in the first direction; n is the number of the sagger (200) in the first direction, and is a positive integer; a is the distance between the first side air inlet (110) in the first direction and the nearest sagger (200) in the initial state; τ is the distance between two adjacent side air inlets (110) in the first direction; m is the number of the side air inlet (110) in the first direction, and is a positive integer.

2. The calcination apparatus according to claim 1, characterized in that, Along the first direction, if the distance between two adjacent side air inlets (110) is an integer multiple of the length of the crucible (200), and multiple side air inlets (110) open or close simultaneously, then the opening time of the side air inlets (110) satisfies: 。 3. The calcination apparatus according to claim 1 or 2, characterized in that, The side air inlet (110) is also provided with a control mechanism that communicates with the side air inlet (110). The control mechanism includes a drive member, a sleeve (310) and a piston (320). The sleeve (310) is provided with an air outlet (311) that communicates with the side air inlet (110) and an air inlet (312) for connecting to an external air source. The piston (320) is disposed inside the sleeve (310). The drive member is connected to the piston (320) to drive the piston (320) to move inside the sleeve (310). The air inlet (312) is located within the stroke range of the piston (320), and the air outlet (311) is located outside the stroke range of the piston (320). When the side air inlet (110) corresponds to the opening (220) in the first direction, the piston (320) is located outside the air inlet (312) to expose the air inlet (312). When the side air inlet (110) corresponds to the support leg (210), the piston (320) covers the air inlet (312).

4. The calcination apparatus according to claim 3, characterized in that, The driving component includes a crank (330) and a slider (340). The first end of the crank (330) is used to connect to a drive motor, and the second end of the crank (330) is connected to the slider (340). The slider (340) is slidably disposed in the sleeve (310), and the slider (340) is connected to the piston (320) through a piston rod (350).

5. The calcination apparatus according to claim 3, characterized in that, Two saggers (200) are stacked one on top of the other along the second direction, and in the second direction, the side air inlet (110) corresponds to the opening (220) of the lower sagger (200); Wherein, the first direction and the second direction are perpendicular to each other.

6. The calcination apparatus according to claim 5, characterized in that, The kiln (100) includes a first sidewall (101) and a second sidewall (102) arranged opposite each other along a third direction. The first sidewall (101) and the second sidewall (102) are each provided with a plurality of side air inlets (110), and the plurality of side air inlets (110) on the first sidewall (101) correspond one-to-one with the plurality of side air inlets (110) on the second sidewall (102). Along the third direction, a plurality of the saggers (200) are provided between the first sidewall (101) and the second sidewall (102). Among them, the first direction, the second direction, and the third direction are perpendicular to each other.

7. A method for introducing air into a calcining apparatus, applied to the calcining apparatus as described in any one of claims 1-6, characterized in that, include: Obtain the dimensional parameters of the sagger (200) along the first direction, the position parameters of the side air inlet (110) in the kiln (100) in the first direction, and the travel speed of the roller conveyor (120) along the first direction; Based on the dimensional parameters of the sagger (200) along the first direction, the position parameters of the side air inlet (110) in the kiln (100) in the first direction, and the traveling speed of the roller conveyor (120) along the first direction, the state of the side air inlet (110) is controlled so that the side air inlet (110) is opened when it corresponds to the opening (220) of the sagger (200) in the first direction, and closed when it corresponds to the support leg (210) of the sagger (200).

8. The air intake method for the calcining apparatus according to claim 7, characterized in that, Along the first direction, the kiln (100) is provided with a plurality of saggers (200), which abut against each other; along the first direction, the kiln (100) is also provided with a plurality of side air inlets (110), with adjacent side air inlets (110) equally spaced; the opening time of the side air inlets (110) satisfies: In the formula, x is the length of the support leg (210) in the first direction; y is the length of the opening (220) in the first direction; v is the traveling speed of the roller conveyor (120) in the first direction; n is the number of the sagger (200) in the first direction, and is a positive integer; a is the distance between the first side air inlet (110) in the first direction and the nearest sagger (200) in the initial state; τ is the distance between two adjacent side air inlets (110) in the first direction; m is the number of the side air inlet (110) in the first direction, and is a positive integer.

9. The air intake method for the calcining apparatus according to claim 8, characterized in that, Along the first direction, if the distance between two adjacent side air inlets (110) is an integer multiple of the length of the crucible (200), and multiple side air inlets (110) open or close simultaneously, then the opening time of the side air inlets (110) satisfies: 。

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