Ternary precursor powder drying device
Through the design of the crushing rack and partition cylinder, the agglomeration and sudden heat problems of the ternary precursor powder during the drying process are solved, and uniform drying and efficient ternary precursor powder treatment are achieved, improving product quality and efficiency.
Patent Information
- Application Number
- CN202510646667.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-20
- Publication Date
- 2025-07-18
AI Technical Summary
In the prior art, the ternary precursor powder is prone to agglomeration during the drying process, resulting in uneven drying, reduced efficiency, and sudden heat may occur, affecting product quality.
The auxiliary unit including a crushing rack and a partition cylinder is adopted to crush the clumping ternary precursor powder through the crushing rack, and the gradually increasing temperature design of the partition cylinder is designed to avoid sudden heat, ensure the presence of a temperature gradient, and prevent direct high-temperature contact.
It effectively prevents uneven drying and sudden heat of the ternary precursor powder, improves drying efficiency and product quality, and ensures the integrity and morphological stability of the ternary precursor powder.
Smart Images
Figure CN120333089A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of drying ternary precursor powders, and particularly to a drying device for ternary precursor powders. Background Art
[0002] Ternary precursor powders refer to complexes in powder form formed by specific processes of hydroxides of three metal elements, namely nickel, cobalt, manganese, or nickel, cobalt, and aluminum. Since ternary precursor powders usually contain a certain amount of moisture, it is necessary to dry the ternary precursor powders to remove this moisture, prevent defects caused by the presence of moisture in subsequent processes such as sintering, and affect the performance and structure of the material. Moreover, drying can improve the physical and chemical stability of the ternary precursor powders, reduce the risk of deterioration during storage and transportation, and is beneficial to subsequent processing.
[0003] The equipment for drying ternary precursor powders mainly includes ovens, rotary kilns, and spray dryers. Here, an electromagnetic heating type rotary kiln is mainly used for drying. After the rotary kiln is heated for a period of time, the internal temperature rises. At this time, the ternary precursor powder containing moisture is sent into the inlet of the kiln body. After a period of time, the dried ternary precursor powder is sent out of the kiln body. Since the ternary precursor powder containing moisture will agglomerate, directly drying will result in uneven drying of the ternary precursor powder, reduced efficiency, and the product quality will also be affected.
[0004] Moreover, directly drying the ternary precursor powder containing moisture in the rotary kiln will cause the ternary precursor powder to undergo sudden heating, resulting in a change in the atomic arrangement inside the powder crystal, affecting the integrity of its crystal form. It may also cause local overheating on the surface of the powder particles, leading to melting or sintering of the particle surface, changing the particle morphology. And it will cause the moisture on the surface of the powder particles to evaporate rapidly, forming a dry shell, while the internal moisture is difficult to diffuse to the surface through this shell, resulting in hindered internal moisture evaporation, reduced overall drying efficiency. And due to uneven heating inside and on the surface of the powder particles, thermal stress will be generated, resulting in cracks or even breakage of the powder particles, increasing the specific surface area of the powder particles, making the powder particles more likely to absorb moisture in the air during subsequent drying, thus affecting the drying effect and efficiency. Summary of the Invention
[0005] In view of the above problems, the embodiments of the present application provide a drying device for ternary precursor powders to solve the technical problems in the related art that the agglomeration and sudden heating of the ternary precursor powders during drying result in uneven drying, reduced drying efficiency, and affected product quality. To achieve the above object, the embodiments of the present application provide the following technical solutions.
[0006] A ternary precursor powder drying device according to an embodiment of the present application includes a kiln body of a rotary kiln and an auxiliary unit. The auxiliary unit is arranged on the kiln body and is used to increase the powder drying path without changing the length of the kiln body, and divide the drying area of the kiln body according to temperature, so that the drying temperature of the ternary precursor powder gradually increases, avoiding the sudden heating of the ternary precursor powder when it enters the cylinder on the kiln body during the long drying process; the auxiliary unit includes a first fixing rod. A fixing rod group is fixedly installed linearly and uniformly at the inner end of the left side of the cylinder on the kiln body. The fixing rod group is composed of first fixing rods evenly distributed along its circumference. A first partition cylinder is fixedly installed at one end of the first fixing rod facing the central axis of the cylinder on the kiln body. A first crushing frame is rotatably connected to the smoke chamber on the kiln body, and the rotation direction of the first crushing frame is opposite to the rotation direction of the cylinder on the kiln body; on both the left and right sides of the inner end of the cylinder on the kiln body, second fixing rods are fixedly installed evenly along its circumference. A second partition cylinder is fixedly installed at one end of the second fixing rod facing the central axis of the cylinder on the kiln body. A second crushing frame is fixedly installed inside the second partition cylinder on the first crushing frame and inside the smoke chamber on the kiln body.
[0007] According to an embodiment of the present invention, the first crushing frame includes a rotating rod, and stirring blocks one for stirring the agglomerated ternary precursor powder and linearly distributed to break it are fixedly installed evenly along the circumference inside the first partition cylinder on the rotating rod.
[0008] According to an embodiment of the present invention, the second crushing frame includes a connecting block. Connecting blocks are fixedly installed evenly along the circumference inside the smoke chamber on the kiln body on the rotating rod. Linking rods are fixedly installed at the left ends of the connecting blocks. A plurality of crushing groups are evenly arranged on the left side of the linking rods. The crushing group is composed of an annular plate and a stirring block two. Annular plates are fixedly installed evenly together on the left side of the linking rods. Stirring blocks two for stirring the agglomerated ternary precursor powder to break it are fixedly installed evenly along the circumference at the right end of the annular plate.
[0009] According to an embodiment of the present invention, an eight-shaped baffle group is fixedly installed evenly on the inner surface of the cylinder on the kiln body, and the adjacent baffle groups on the left and right are arranged staggeredly.
[0010] According to an embodiment of the present invention, the inclination angle of the first partition cylinder is the same as the inclination angle of the cylinder on the kiln body, and the inclination angle of the second partition cylinder is the same as the inclination angle of the first partition cylinder.
[0011] According to an embodiment of the present invention, a cylindrical through hole is opened in the middle of the first partition cylinder, and a frustum-shaped groove is opened in the middle of the second partition cylinder. The area of the right bottom surface of the frustum-shaped groove is smaller than that of the left bottom surface, and the inclination angle degree of the side surface of the frustum-shaped groove is greater than the inclination angle degree of the cylinder on the kiln body.
[0012] According to an embodiment of the present invention, on the inner wall of the first separation cylinder and symmetrically fixed on the left and right sides of the first stirring block, there are first matching blocks, and on the inner wall of the second separation cylinder and fixed on the right side of the second stirring block, there is a second matching block.
[0013] According to an embodiment of the present invention, on the inner wall of the first separation cylinder, grid plates are linearly and uniformly fixed, and on the rotating rod and on the right side of the grid plates, there are matching plates provided with grid hole grooves.
[0014] According to an embodiment of the present invention, at the right end of the base on the kiln body, there is a positioning table fixedly installed. The positioning table is rotatably connected to the cylinder on the kiln body. Inside the positioning table and outside the cylinder on the kiln body, there is a spiral cooling pipe fixedly installed. On the positioning table and at the right end of the cylinder on the kiln body, there is a guiding plate fixedly installed, and the guiding plate is rotatably connected to the right end of the cylinder on the kiln body.
[0015] According to an embodiment of the present invention, on the inner end of the right side of the cylinder on the kiln body, there is a spiral groove.
[0016] As can be seen from the above technical solutions, the present invention has the following advantages:
[0017] 1. In the present invention, the agglomerated ternary precursor powder is crushed by the first crushing frame and the second crushing frame to prevent uneven drying of the agglomerated ternary precursor powder during drying. By the cooperation of the first separation cylinder and the second separation cylinder, it is ensured that the temperature inside the first separation cylinder is lower than the temperature inside the second separation cylinder, and the temperature inside the second separation cylinder is lower than the temperature inside the cylinder of the kiln body, so that the temperature during the drying of the ternary precursor powder gradually increases, avoiding the ternary precursor powder from directly contacting the high temperature and thus suffering from sudden heat, and ensuring the drying quality and efficiency of the ternary precursor powder.
[0018] 2. In the present invention, with the cooperation of the second separation cylinder and the first separation cylinder, without changing the length of the equipment, the drying path of the ternary precursor powder is increased, so as to achieve the purpose of completely drying the ternary precursor powder while reducing the heating energy.
[0019] In addition to the technical problems solved by the embodiments of the present application described above, the technical features constituting the technical solutions, and the beneficial effects brought by these technical features of the technical solutions, the other technical problems that can be solved by the drying device for ternary precursor powder provided by the embodiments of the present application, the other technical features included in the technical solutions, and the beneficial effects brought by these technical features will be further described in detail in the specific implementation manner. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained according to the provided drawings.
[0021] Figure 1 It shows a front three-dimensional structural schematic diagram provided according to an embodiment of the present invention.
[0022] Figure 2 It shows a front three-dimensional structural schematic diagram of the first crushing frame and the second crushing frame.
[0023] Figure 3 It shows a front cross-sectional plane structural schematic diagram provided according to an embodiment of the present invention.
[0024] Figure 4 It shows a plane expansion diagram of the baffle plate group.
[0025] Among them, the above-mentioned drawings include the following reference numerals:
[0026] 1, kiln body; 11, baffle plate group; 12, positioning table; 13, cooling pipe; 14, feeding plate; 2, auxiliary unit; 21, first fixing rod; 22, first separating cylinder; 221, grid plate; 222, fitting plate; 23, first crushing frame; 231, rotating rod; 232, first stirring block; 233, first fitting block; 234, second fitting block; 24, second fixing rod; 25, second separating cylinder; 26, second crushing frame; 261, connecting block; 262, linkage rod; 263, annular plate; 264, second stirring block. Detailed implementation manners
[0027] To make the above-mentioned objects, features and advantages of the present invention more obvious and understandable, the following will make a detailed description of the specific implementation manners of the present invention with reference to the drawings. Many specific details are set forth in the following description in order to fully understand the present invention. However, the present invention can be implemented in many other ways different from those described herein. Those skilled in the art can make similar improvements without departing from the connotation of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed below.
[0028] Refer to Figure 1, A ternary precursor powder drying device, including the kiln body 1 of a rotary kiln and an auxiliary unit 2. The auxiliary unit 2 is arranged on the kiln body 1 and is used to increase the drying path of the powder without changing the length of the kiln body 1, and to divide the drying area of the kiln body 1 according to temperature, so that the drying temperature of the ternary precursor powder gradually increases, avoiding the situation that the ternary precursor powder suddenly heats up when it enters the cylinder on the kiln body 1 during the long drying process. The cylinder of the kiln body 1 is driven to rotate by an externally arranged motor and a gear set. Supporting wheels are arranged on both the left and right sides of the cylinder of the kiln body 1. The auxiliary unit 2 includes a first fixing rod 21. A fixing rod group is uniformly and linearly fixedly installed along the inner end of the left side of the cylinder on the kiln body 1. The fixing rod group is composed of first fixing rods 21 uniformly distributed along its circumference. A first partition cylinder 22 is fixedly installed at the ends of the first fixing rods 21 facing the central axis of the cylinder on the kiln body 1. A first crushing frame 23 is rotatably connected to the smoke chamber on the kiln body 1. The rotation direction of the first crushing frame 23 is opposite to the rotation direction of the cylinder on the kiln body 1. On both the left and right sides of the inner end of the cylinder on the kiln body 1, second fixing rods 24 are uniformly and fixedly installed along its circumference. A second partition cylinder 25 is fixedly installed at the ends of the second fixing rods 24 facing the central axis of the cylinder on the kiln body 1. A second crushing frame 26 is fixedly installed inside the second partition cylinder 25 on the first crushing frame 23 and inside the smoke chamber on the kiln body 1.
[0029] Refer to Figure 2 , The first crushing frame 23 includes a rotating rod 231. Inside the first partition cylinder 22 on the rotating rod 231, stirring blocks 232 are uniformly fixedly installed along the circumference to stir the agglomerated ternary precursor powder and are linearly distributed to break it.
[0030] First, the cylinder of the kiln body 1 is heated by electromagnetic heating. The cylinder of the kiln body 1 rotates forward. After a period of time, the ternary precursor powder containing moisture and agglomerated enters the cylinder of the kiln body 1 from the feed port of the kiln body 1 through the smoke chamber of the kiln body 1. The ternary precursor powder first enters the first partition cylinder 22. The externally arranged motor drives the rotating rod 231 to rotate in the reverse direction, thereby driving the stirring blocks 232 to rotate to break the agglomerated ternary precursor powder and drying the ternary precursor powder.
[0031] Refer to Figure 2, the crushing frame two 26 includes a connecting block 261. Connecting blocks 261 are evenly and fixedly installed along the circumference on the rotating rod 231 and inside the smoke chamber on the kiln body 1. A linkage rod 262 is fixedly installed at the left end of each connecting block 261. A plurality of crushing groups are evenly arranged on the left side of the linkage rod 262. The crushing group consists of an annular plate 263 and a stirring block two 264. Annular plates 263 are evenly and fixedly installed together on the left side of the linkage rod 262. Stirring blocks two 264 for stirring and crushing the agglomerated ternary precursor powder are evenly and fixedly installed along the circumference at the right end of the annular plate 263.
[0032] The ternary precursor powder that has been crushed and dried moves to the right along the separation cylinder one 22 and enters the separation cylinder two 25. The reverse rotation of the rotating rod 231 drives the stirring block two 264 to rotate to crush some of the ternary precursor powder that is not completely crushed and still agglomerated and to dry the ternary precursor powder. The ternary precursor powder that has been crushed and dried moves to the left along the separation cylinder two 25 and contacts the inner wall of the cylinder body of the kiln body 1.
[0033] Refer to Figure 3 , on the inner surface of the cylinder body of the kiln body 1, an eight-shaped baffle plate group 11 is evenly and fixedly installed, and the adjacent baffle plate groups 11 on the left and right are arranged staggeredly.
[0034] Refer to Figure 3 , the inclination angle of the separation cylinder one 22 is the same as the inclination angle of the cylinder body on the kiln body 1, and the inclination angle of the separation cylinder two 25 is the same as the inclination angle of the separation cylinder one 22.
[0035] Refer to Figure 3 , both the left and right sides of the separation cylinder one 22 are open. A frustum-shaped groove is opened in the middle of the separation cylinder two 25. The area of the right bottom surface of the frustum-shaped groove is smaller than that of the left bottom surface. The inclination angle degree of the side surface of the frustum-shaped groove is greater than the inclination angle degree of the cylinder body on the kiln body 1. The right side of the separation cylinder two 25 is closed and the left side is open.
[0036] Refer to Figure 3 , on the inner wall of the separation cylinder one 22 and symmetrically on the left and right sides of the stirring block one 232, a matching block one 233 is fixedly installed. On the inner wall of the separation cylinder two 25 and on the right side of the stirring block two 264, a matching block two 234 is fixedly installed.
[0037] Refer to Figure 3 , on the inner wall of the separation cylinder one 22, a grid plate 221 is evenly and fixedly installed along its length. On the rotating rod 231 and on the right side of the grid plate 221, a matching plate 222 with a grid hole groove is fixedly installed.
[0038] Refer to Figure 3, a positioning table 12 is fixedly installed at the right end of the base on the kiln body 1. The positioning table 12 is rotatably connected to the cylinder on the kiln body 1. A spiral cooling pipe 13 is fixedly installed inside the positioning table 12 and outside the cylinder on the kiln body 1. A guide plate 14 is fixedly installed on the positioning table 12 at the right end of the cylinder on the kiln body 1. The guide plate 14 is rotatably connected to the right end of the cylinder on the kiln body 1; a spiral groove is provided at the inner end of the right side of the cylinder on the kiln body 1.
[0039] The ternary precursor powder after being completely dried enters the spiral groove along the baffle plate group 11 to the right. After being cooled by the cooling pipe 13, it finally exits the device through the guide plate 14.
[0040] When the cylinder of the kiln body 1 is heated by electromagnetic heating, the position that heats up first is the surface of the cylinder of the kiln body 1. As the heating time increases, the second partition cylinder 25 and the first partition cylinder 22 are gradually heated, but there will still be a temperature difference. The temperature inside the first partition cylinder 22 is less than the temperature inside the second partition cylinder 25, and the temperature inside the second partition cylinder 25 is less than the temperature inside the cylinder of the kiln body 1, so that the temperature of the ternary precursor powder during drying gradually increases, avoiding the ternary precursor powder from directly contacting high temperature. With the cooperation of the second partition cylinder 25 and the first partition cylinder 22, without changing the length of the device, the drying path of the ternary precursor powder is increased, so as to achieve the purpose of completely drying the ternary precursor powder while reducing the heating energy.
[0041] The working principle of the present invention: The first step: First, the cylinder of the kiln body 1 is heated by electromagnetic heating, and the cylinder of the kiln body 1 rotates. After a period of time, the ternary precursor powder containing moisture and agglomerated enters the cylinder of the kiln body 1 from the feed port of the kiln body 1 through the smoke chamber of the kiln body 1. The ternary precursor powder first enters the first partition cylinder 22. Since the first partition cylinder 22 is fixedly connected to the cylinder of the kiln body 1 through the first fixing rod 21, the first partition cylinder 22 rotates together with the cylinder of the kiln body 1. The inclination angle of the first partition cylinder 22 is the same as the inclination angle of the cylinder of the kiln body 1. Under the action of gravity, the agglomerated ternary precursor powder moves to the right, and at the same time, the agglomerated ternary precursor powder is broken by the first crushing frame 23, and the ternary precursor powder is dried.
[0042] Step 2: The ternary precursor powder that has been crushed and dried moves to the right along the first separation cylinder 22 and enters the second separation cylinder 25. Since the second separation cylinder 25 is fixedly connected to the cylinder body of the kiln body 1 through the second fixing rod 24, the second separation cylinder 25 rotates together with the cylinder body of the kiln body 1. Moreover, the side inclination angle of the frustum groove on the second separation cylinder 25 is greater than the cylinder inclination angle of the kiln body 1. Therefore, under the action of gravity, the agglomerated ternary precursor powder moves to the left. At the same time, the partially unbroken and still agglomerated ternary precursor powder is crushed by the second crushing frame 26 and the ternary precursor powder is dried. The ternary precursor powder that has been crushed and dried moves to the left along the second separation cylinder 25 and contacts the inner wall of the cylinder body of the kiln body 1. The cylinder body of the kiln body 1 continues to rotate, driving the ternary precursor powder to move to the right for further drying. Under the action of gravity, the finally completely dried ternary precursor powder moves to the right along the baffle plate group 11 and enters the spiral groove. After being cooled down by the cooling pipe 13, it is finally discharged from the equipment through the guide plate 14.
[0043] Step 3: When the cylinder body of the kiln body 1 is electromagnetically heated, the position that heats up first is the surface of the cylinder body of the kiln body 1. As the heating time increases, the second separation cylinder 25 and the first separation cylinder 22 are gradually heated, but there will still be a temperature difference. The temperature inside the first separation cylinder 22 is lower than the temperature inside the second separation cylinder 25, and the temperature inside the second separation cylinder 25 is lower than the temperature inside the cylinder body of the kiln body 1, so that the temperature of the ternary precursor powder gradually increases during drying, avoiding the ternary precursor powder from directly contacting high temperature and causing sudden heating.
[0044] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by terms such as "center", "middle part", "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", "end", "axial", "circumferential", etc. is the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.
[0045] In addition, the terms "first", "second", "No. 1", "No. 2", "one", "two" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. In the description of the present invention, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.
[0046] In the description of the present invention, it should also be noted that, unless otherwise clearly specified and defined, the terms "arranged", "connected", "installed", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection, a sliding connection; it can be a mechanical connection, or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.
[0047] The embodiments of this specific implementation manner are all preferred embodiments of the present invention, and do not limit the protection scope of the present invention accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of the present invention should be covered within the protection scope of the present invention.
Claims
1. A ternary precursor powder drying device, characterized in that , including the kiln body of the rotary kiln and the auxiliary unit. The auxiliary unit is arranged on the kiln body and is used to divide the drying area of the kiln body according to temperature ranges; The auxiliary unit includes a first fixing rod. Along the inner end of the left side of the cylinder body on the kiln body, a fixing rod group is fixedly installed linearly and evenly. The fixing rod group is composed of first fixing rods evenly distributed along its circumference. The ends of the first fixing rods facing the central axis of the cylinder body on the kiln body are jointly fixedly installed with a first separation cylinder. A first crushing frame for crushing the agglomerated ternary precursor powder in the first separation cylinder is rotatably connected to the smoke chamber on the kiln body. The rotation direction of the first crushing frame is opposite to the rotation direction of the cylinder body on the kiln body; On the inner ends of the left and right sides of the inner cylinder body of the kiln body, second fixing rods are symmetrically and evenly fixedly installed along its circumference. The ends of the second fixing rods facing the central axis of the cylinder body on the kiln body are jointly fixedly installed with a second separation cylinder. Inside the second separation cylinder on the first crushing frame and inside the smoke chamber on the kiln body, a second crushing frame for crushing the agglomerated ternary precursor powder in the second separation cylinder is fixedly installed.
2. The drying device for ternary precursor powder according to claim 1, wherein: The first crushing frame includes a rotating rod. Inside the first separation cylinder on the rotating rod, stirring blocks one for stirring the agglomerated ternary precursor powder and linearly distributing and crushing are fixedly installed circumferentially and evenly.
3. The drying device for ternary precursor powder according to claim 2, wherein: The second crushing frame includes a connecting block. On the rotating rod and inside the smoke chamber on the kiln body, connecting blocks are fixedly installed evenly along its circumference. Linkage rods are fixedly installed at the left ends of the connecting blocks. A plurality of crushing groups are evenly arranged on the left side of the linkage rods. Each crushing group is composed of an annular plate and a second stirring block. Annular plates are fixedly installed evenly and jointly on the left side of the linkage rods. Second stirring blocks for stirring and crushing the agglomerated ternary precursor powder are fixedly installed evenly along the circumference at the right end of the annular plate.
4. A ternary precursor powder drying device according to claim 1, characterized in that: On the inner surface of the cylinder body of the kiln body, an eight-shaped baffle plate group is fixedly installed evenly. The adjacent baffle plate groups on the left and right are arranged staggeredly.
5. A drying device for ternary precursor powder according to claim 1, characterized in that: The inclination angle of the first separation cylinder is the same as the inclination angle of the cylinder body on the kiln body, and the inclination angle of the second separation cylinder is the same as the inclination angle of the first separation cylinder.
6. The drying device for ternary precursor powder according to claim 1, characterized in that: Both the left and right sides of the first separation cylinder are open. A frustum-shaped groove is opened in the middle of the second separation cylinder. The bottom area of the right side of the frustum-shaped groove is smaller than the bottom area of the left side. The side inclination angle of the frustum-shaped groove is greater than the inclination angle of the cylinder body on the kiln body. The right side of the second separation cylinder is closed and the left side is open.
7. A drying device for ternary precursor powder according to claim 3, characterized in that: On the inner wall of the first separation cylinder and symmetrically on the left and right sides of the first stirring block, first matching blocks are fixedly installed. On the inner wall of the second separation cylinder and on the right side of the second stirring block, a second matching block is fixedly installed.
8. A ternary precursor powder drying device according to claim 2, characterized in that: On the inner wall of the first separation cylinder, grid plates are fixedly installed linearly and evenly. On the rotating rod and on the right side of the grid plates, matching plates with grid hole grooves are fixedly installed.
9. The drying device for ternary precursor powder according to claim 1, wherein: At the right end of the base on the kiln body, a positioning table is fixedly installed. The positioning table is rotatably connected to the cylinder body on the kiln body. Inside the positioning table and outside the cylinder body on the kiln body, a spiral cooling pipe is fixedly installed. On the positioning table and at the right end of the cylinder body on the kiln body, a guiding plate is fixedly installed. The guiding plate is rotatably connected to the right end of the cylinder body on the kiln body.
10. The drying device for ternary precursor powder according to claim 1, characterized in that: A spiral groove is opened at the inner end of the right side of the cylinder body on the kiln body.