Continuous granulation kettle
By adopting deflected flat paddle stirring and segmented temperature control technology in the lithium battery negative electrode material granulation kettle, the problems of uneven temperature and stirring are solved, and an efficient lithium battery negative electrode material granulation process is achieved.
Patent Information
- Application Number
- CN202422619065.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-29
- Publication Date
- 2025-09-19
- Estimated Expiration
- 2034-10-29
AI Technical Summary
Traditional granulation kettles have problems with uneven temperature control and uneven stirring when processing lithium battery negative electrode materials, affecting product quality and production efficiency.
A plurality of flat paddle stirring mechanisms are adopted, and the flat paddles are deflected 5~15 degrees relative to the axis to form an alternating forward and backward material flow. A segmented temperature control mechanism is set outside the kettle body to achieve uniform heating by independently controlling the temperature of each heating zone.
It achieves more uniform material mixing, good granulation quality, low rework rate and high production efficiency, and is suitable for high-temperature continuous granulation of lithium battery negative electrode materials.
Smart Images
Figure CN223351601U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of granulation, and in particular to a continuous granulation kettle. Background Art
[0002] With the rapid development of the new energy industry, the performance and quality of lithium batteries, as an important energy storage device, have attracted widespread attention. During the lithium battery production process, the properties of the anode material have a significant impact on the overall performance of the battery. The granulation process is a key step in preparing high-performance anode materials. Traditional granulation kettles, when processing lithium battery anode materials, often suffer from problems such as uneven temperature control caused by a single heating wire and uneven material mixing caused by all-in-one stirring blades, which seriously affect product quality and production efficiency. Utility Model Content
[0003] In view of the problems mentioned in the background art in the traditional granulation kettle when processing lithium battery negative electrode materials, this application proposes the following technical solutions for the purpose of achieving uniform temperature control, uniform stirring control and stable continuous production.
[0004] A continuous granulation kettle comprises a kettle body, a stirring mechanism, a rotary drive mechanism and a temperature control mechanism.
[0005] The stirring mechanism is installed in the kettle body. The stirring mechanism includes a plurality of flat paddles, a plurality of support rods and a main shaft. The plurality of support rods are fixed to the circumference of the main shaft along multiple axial directions, and one flat paddle is fixed to the end of each support rod away from the main shaft. A plurality of flat paddles are installed on each axis, and the flat paddles are perpendicular to the main shaft, and the deflection angle of the flat paddles relative to the axis is 5~15°. Each axis has a flat paddle with a positive deflection of 5~15° and a flat paddle with a negative deflection of 5~15°.
[0006] The rotation drive mechanism is arranged outside the kettle body and connected to one end of the main shaft. The temperature control mechanism is arranged on the peripheral side of the kettle body.
[0007] By adopting the above technical solution, the stirring mechanism is equipped with flat paddles with opposite angles. Driven by the flat paddles, the material forms an alternating forward and backward movement within the reactor, which achieves more uniform mixing, good granulation quality, and low rework rate, thereby achieving high production efficiency. This continuous granulation reactor is suitable for high-temperature continuous granulation of lithium battery negative electrode materials.
[0008] A preferred structure of the continuous granulation kettle is that the plurality of support rods are fixed on the circumference of the main shaft along four axial directions, and adjacent axes are arranged at a central angle of 90°.
[0009] By adopting the above technical solution, the support rod has a large coverage area, and the flat paddles installed on the support rod can continuously stir the material.
[0010] A preferred structure of the continuous granulation kettle is that the distance between adjacent support rods in each axial direction is equal to a.
[0011] By adopting the above technical solution, the support rods are arranged at equal distances, which can make the materials stirred more evenly.
[0012] A preferred structure of the continuous granulation kettle is that the support rods between adjacent axes are staggered and alternately arranged, and the support rods on two axes that are opposite to each other at a central angle of 180° are relatively flush arranged.
[0013] By adopting the above technical solution, the flat paddles on different axes alternately stir the materials, so that the materials are stirred more evenly.
[0014] A preferred configuration of the continuous granulation kettle comprises two flat blades mounted on two relatively aligned support rods, forming a set of alignment paddles. When one or both of the alignment paddles are deflected 5-15° in the opposite direction, the alignment paddles are referred to as reverse paddles. When none of the alignment paddles are deflected 5-15° in the opposite direction, the alignment paddles are referred to as forward paddles. Each set of reverse paddles is provided every two to four groups, with the remaining groups being forward paddles.
[0015] By adopting the above technical solution, the angles of the front and rear stirring paddles are opposite, and the material forms a forward, forward, backward, forward, forward, backward material direction in the kettle, so that the material is mixed more efficiently and granulated more reliably under the drive of the stirring paddles.
[0016] A preferred structure of the continuous granulation kettle is that each of the support rods is a straight rod of equal length, each of the support rods is vertically connected to the main shaft, and the center line of the support rod is on the plane where the flat paddle is located.
[0017] By adopting the above technical solution, the support rods and the flat paddles are evenly distributed on the main shaft and in the same direction, so the materials can be stirred evenly.
[0018] A preferred structure of the continuous granulation kettle is that the temperature control mechanism includes a furnace, two insulation layers, two heating elements and a heat insulation element. The furnace is sleeved outside the kettle body, the heat insulation element is arranged between the kettle body and the furnace, and the heat insulation element ring is arranged in the middle position of the kettle body, dividing the space between the kettle body and the furnace into two parts, namely the first space and the second space. The first part of the space is installed with one insulation layer and one heating element, and the second part of the space is installed with another insulation layer and another heating element. Temperature sensors are installed in both spaces. The insulation layer is sleeved on the outer peripheral side of the kettle body, the heating element is arranged between the insulation layer and the kettle body, and the temperature sensor is arranged between the heating element and the kettle body.
[0019] By adopting the above technical solution, two heating elements are set in the two separated spaces outside the kettle body, the kettle body is heated in sections, and the temperature is controlled separately, which reduces the difficulty of controlling the temperature gradient difference caused by heating by a single heating element, and makes it easier to uniformly control the heating temperature of the kettle body by the heating element.
[0020] A preferred structure of the continuous granulation kettle is that the continuous granulation kettle includes four electric heating zones: a first electric heating zone located in the upper portion of the first space, a second electric heating zone located in the upper portion of the second space, a third electric heating zone located in the lower portion of the first space, and a fourth electric heating zone located in the lower portion of the second space. Each of the four electric heating zones is equipped with a temperature sensor.
[0021] By adopting the above technical solution, each heating zone independently senses the temperature, and by adjusting the power of the heating element, the temperature distribution in the furnace is made more uniform, avoiding the problems of large temperature gradients and local excessively high or low temperatures that may occur in traditional heating methods, and is conducive to regulating different areas in the furnace to reach the temperature required by the process.
[0022] A preferred structure of the continuous granulation kettle is that the ratio of the inner length to the inner diameter of the kettle body is 8-10.
[0023] By adopting the above technical solution, this aspect ratio can effectively increase the residence time of the material in the kettle and make the material evenly stirred without excessively increasing energy consumption. The kettle body with this aspect ratio can meet the process requirements required by the material.
[0024] A preferred structure of the continuous granulation kettle is that the kettle body has a feed inlet, a discharge port, and a smoke exhaust port. The feed inlet is located at one end of the upper surface of the kettle body. The discharge port is located at the other end of the lower surface of the kettle body. The smoke exhaust port is located at the end of the upper surface of the kettle body away from the feed inlet.
[0025] By adopting the above technical solution and adjusting the opening of the feed port and the discharge port, continuous feeding and discharging are possible. Since high-temperature stirring of the material will produce gas, a smoke exhaust port is set to allow the waste gas to discharge from the kettle.
[0026] In summary, the continuous granulation kettle of the present application has the following beneficial effects: the stirring mechanism is provided with flat paddles with opposite angles, and the material, driven by the flat paddles, forms an alternating forward and backward direction in the kettle, which makes the mixing more uniform, the granulation quality is good, and the rework rate is low, so its production efficiency is high. The continuous granulation kettle is suitable for high-temperature continuous granulation of negative electrode materials for lithium batteries. Two heating elements are set in the two separated spaces outside the kettle body to heat the kettle body in sections and control the temperature separately, which reduces the difficulty of controlling the temperature gradient difference caused by heating by a single heating element, and makes it easier to control the heating temperature of the kettle body more uniformly. BRIEF DESCRIPTION OF THE DRAWINGS
[0027] Figure 1 It is a schematic diagram of the side cross-sectional structure of the continuous granulation kettle.
[0028] Figure 2 Schematic diagram of the flat blade structure with two different rotation directions.
[0029] Figure 3 Schematic diagram of the three-dimensional structure of the stirring mechanism.
[0030] Figure 4 Schematic diagram of the lateral structure of the stirring mechanism.
[0031] Figure 5 This is a schematic diagram of the port perspective structure of the continuous granulation kettle.
[0032] Figure 6 It is a schematic diagram of the structure of a continuous granulation kettle from a top view.
[0033] Figure numerals: 1, kettle body; 2, stirring mechanism; 3, rotary drive mechanism; 4, temperature control mechanism; 201, flat blade; 202, support rod; 203, main shaft; 204, reinforcement seat; 301, bearing seat; 302, coupling; 303, reducer; 304, motor; 21, reverse paddle; 22, forward paddle; 101, left flange cover; 102, right flange cover; 305, sealing assembly; 401, base; 402, furnace Chamber; 403, insulation layer; 404, heating element; 405, thermal insulation element; 406, pulley; 407, lead-out rod; 408, temperature sensor; 409, first electric heating zone; 410, second electric heating zone; 411, third electric heating zone; 412, fourth electric heating zone; 413, saddle; 414, temperature sensor in the kettle; 415, pressure sensor; 103, feed port; 104, discharge port; 105, smoke exhaust port. DETAILED DESCRIPTION
[0034] The following will be combined with the accompanying drawings to clearly and completely describe the technical solutions in the embodiments. Obviously, the embodiments described are only part of the embodiments of this application, not all of them. Based on the following embodiments, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.
[0035] like Figure 1 A continuous granulation kettle includes a kettle body 1, a stirring mechanism 2, a rotary drive mechanism 3 and a temperature control mechanism 4.
[0036] The stirring mechanism 2 is installed within the kettle body 1 and is used to stir the material. The stirring mechanism 2 includes multiple flat paddles 201, multiple support rods 202, and a main shaft 203. The multiple support rods 202 are fixed to the sides of the main shaft 203 along multiple axial directions, with one flat paddle 201 fixed to the end of each support rod 202 away from the main shaft 203. Multiple flat paddles 201 are installed on each axis, and each flat paddle 201 is perpendicular to the main shaft 203.
[0037] like Figure 2 The deflection angle of the flat paddle 201 relative to the axis is 5~15°, and each axis has the flat paddle 201 with a positive deflection of 5~15° and the flat paddle 201 with a reverse deflection of 5~15°.
[0038] The main shaft 203 and support rod 202 can be made of 310S stainless steel. Through forging and solution treatment, they possess excellent oxidation resistance, outstanding high-temperature resistance, good mechanical properties, and formability, providing high strength and stability at high temperatures. A reinforcing seat 204 can be used to secure the support rod 202 to the main shaft 203. This effectively disperses the forces acting on the support rod 202 during the rotation of the main shaft 203, effectively reducing fatigue cracks in the main shaft 203 and support rod 202 during long-term operation.
[0039] The rotation drive mechanism 3 is disposed outside the kettle body 1 and is connected to one end of the main shaft 203 for driving the main shaft 203 to rotate.
[0040] One configuration of the rotary drive mechanism 3 includes two bearing blocks 301, a coupling 302, a reducer 303, and a motor 304. The motor 304 utilizes an explosion-proof variable-frequency motor, and the stirring speed is adjusted according to the characteristics of the material. The kettle body 1 is cylindrical, with flange covers mounted at each end. The left end of the horizontally arranged main shaft 203 extends from the left flange cover 101, while the right end extends from the right flange cover 102. The main shaft 203 and each flange cover are connected in a sealed, rotating manner via a sealing assembly 305. After the main shaft 203 extends out of the two flange covers, both ends of the main shaft 203 are supported by the bearing seat 301. The left end of the main shaft 203 continues to pass through the bearing seat 301 and is connected to the coupling 302. The coupling 302 is connected to the reducer 303. The reducer 303 is connected upward to the motor 304. The reducer 303 and the motor 304 are both installed on the support seat, so that the motor 304 can drive the main shaft 203 to rotate.
[0041] The temperature control mechanism 4 is arranged on the peripheral side of the kettle body 1 and is used to heat and keep the kettle body 1 warm.
[0042] In the above continuous granulation kettle, the stirring mechanism 2 is provided with flat paddles 201 with opposite angles, and the rotary drive mechanism 3 drives the stirring mechanism 2 to rotate. Driven by the flat paddles 201, the material forms an alternating forward and backward movement within the kettle. This results in uniform material mixing, good extrusion granulation quality, low rework rate of material pellets, and improved production efficiency. This continuous granulation kettle is suitable for high-temperature continuous granulation of lithium battery negative electrode materials, can achieve an efficient granulation process and stable continuous production, and improve product quality and production efficiency.
[0043] like Figure 1 To improve mixing efficiency, multiple struts 202 are fixed along four axes around the main shaft 203, with adjacent axes spaced 90° apart. These axes are not physical lines but rather positional representations, located on the surface of the main shaft 203 and parallel to its centerline. This structural design allows the struts 202 to cover a large area, allowing the flat paddles 201 mounted on them to continuously mix the material.
[0044] In order to stir the material more evenly, the spacing between the adjacent support rods 202 in each axial direction is designed to be equal to a, where a is used to indicate that the spacing between adjacent rods in each axis is equal, and the value of a can be designed as needed.
[0045] To enhance continuous stirring of the material, the struts 202 are staggered and alternately arranged between adjacent axes. The struts 202 on two axes that are 180° apart are aligned. That is, a strut 202 on one axis is positioned between two struts 202 on the adjacent axis, while aligned struts 202 on opposing axes are positioned at the same cross-sectional position on the main shaft 203. The paddles 201 on different axes alternately stir the material, ensuring a more uniform mixing.
[0046] like Figure 3 Regarding the aforementioned flat paddles 201 with a forward deflection of 5-15° and the flat paddles 201 with a reverse deflection of 5-15° installed on each axis, the present application has designed a preferred solution as follows: two flat paddles 201 installed on two relatively parallel support rods 202 form a group of alignment paddles. When one or two of the alignment paddles 201 are flat paddles 201 with a reverse deflection of 5-15°, the alignment paddles are referred to as reverse paddles. When no flat paddles 201 are reverse deflected by 5-15°, the alignment paddles are referred to as forward paddles. One group of reverse paddles is provided every 2-4 groups, and the remaining groups are forward paddles.
[0047] like Figure 4 , design the above preferred flat paddle 201 deflection scheme, the front and rear stirring paddles have opposite angles, and take the example of setting a group of reverse paddles every 2 groups of forward paddles, the material forms a material direction of advance, advance, retreat, advance, advance, retreat in the kettle, and the material is driven by the stirring paddle, the mixing is efficient, and the granulation is more reliable.
[0048] To accommodate the cylindrical interior of the kettle 1, the stirring mechanism 2 should be designed with a more uniform structure. Each of the support rods 202 can be designed as a straight rod of equal length, perpendicularly connected to the main shaft 203. The centerline of each support rod 202 lies on the plane of the flat paddles 201. This ensures that the support rods 202 and the flat paddles 201 are evenly distributed on the main shaft 203 and oriented in the same direction, ensuring uniform mixing of the material.
[0049] like Figure 1 The temperature control mechanism 4 includes a base 401, a furnace 402, two insulation layers 403, two heating elements 404 and a heat insulating element 405.
[0050] like Figure 5The furnace 402 is fixed to the base 401, with a pulley 406 installed below the base 401. The base 401 can be made of steel. The insulation layer 403 can be made of aluminum silicate insulation cotton. The heating element 404 can be an electric heating wire, each connected to an external power source via a lead-out rod 407, which is also protected by a ceramic tube. The lead-out rod 407 can heat the kettle body 1 to 900°C. The furnace 402 is mounted outside the kettle body 1. The thermal insulation element 405 is arranged between the kettle body 1 and the furnace 402. The thermal insulation element 405 is arranged in a circle around the middle of the kettle body 1, dividing the space between the kettle body 1 and the furnace 402 into two parts: a first space and a second space. The first space is equipped with one insulation layer 403 and one heating element 404, while the second space is equipped with another insulation layer 403 and another heating element 404. Both spaces are equipped with temperature sensors 408. The insulation layer 403 is spaced apart and sleeved around the outer periphery of the kettle body 1. The heating element 404 is disposed between the insulation layer 403 and the kettle body 1. The temperature sensor 408 is disposed between the heating element 404 and the kettle body 1. The two heating elements 404 are disposed in two separate spaces outside the kettle body 1. The kettle body 1 is heated in sections by thermal radiation, and the temperatures are controlled separately. This reduces the difficulty in controlling temperature gradients caused by heating by a single heating element 404, making it easier to uniformly control the temperature of the kettle body 1 by the heating element 404.
[0051] like Figure 6 The continuous granulation kettle includes four electric heating zones: a first electric heating zone 409 located in the upper portion of the first space, a second electric heating zone 410 located in the upper portion of the second space, a third electric heating zone 411 located in the lower portion of the first space, and a fourth electric heating zone 412 located in the lower portion of the second space. A temperature sensor 408 is installed in each of the four electric heating zones. Each heating zone independently senses temperature, and by adjusting the power of the heating element 404, the temperature distribution within the furnace is made more uniform, avoiding the problems of large temperature gradients and localized excessively high or low temperatures that may occur in traditional heating methods. This facilitates the regulation of different areas within the furnace to achieve the required process temperature.
[0052] like Figure 1 The continuous granulation kettle may further include a saddle 413 , which is located on the ground and passes upward through the furnace 402 and the insulation layer 403 and is supported on the lower surface of the kettle body 1 .
[0053] like Figure 1Each end of the kettle body 1 can be equipped with a temperature sensor 414 and a pressure sensor 415. The temperature sensor 414 is inserted through the flange cover into the end of the kettle body 1 to sense the temperature inside the kettle, thereby adjusting the power of the temperature control mechanism to maintain the temperature within the desired range. The pressure sensor 415 is also inserted through the flange cover into the end of the kettle body 1 to sense the pressure inside the kettle and identify unsafe conditions.
[0054] The ratio of the inner length to the inner diameter of the kettle body 1 is 8 to 10. The design of this aspect ratio can effectively increase the residence time of the material in the kettle and make the material evenly stirred without excessively increasing energy consumption. The kettle body 1 with this aspect ratio can meet the process requirements required by the material.
[0055] like Figure 1 , the kettle body 1 has a feed port 103, a discharge port 104 and a smoke exhaust port 105. The feed port 103 is located at one end of the upper surface of the kettle body 1. The discharge port 104 is located at the other end of the lower surface of the kettle body 1. The discharge port 104 can be square, so that the material is discharged at a relatively slow speed, which helps the material to be more easily dispersed during the flow process, reduces the possibility of material backlog during discharge, and thus improves the discharge efficiency. The discharge port 104 can also be a rotated rectangle, trapezoid, round or other different shapes to adapt to materials of different properties and process requirements. The smoke exhaust port 105 is located at one end of the upper surface of the kettle body 1 away from the feed port 103. A manhole can also be set on the upper surface of the kettle body 1. By adjusting the opening of the feed port 103 and the discharge port 104, continuous feeding and continuous discharging can be achieved. Because the mixing process generates smoke, for equipment safety, the smoke must be exhausted from the kettle body 1. Therefore, the kettle body 1 is also provided with two smoke exhaust ports 105, one in use and the other in reserve. The active smoke exhaust ports 105 are connected to an external smoke exhaust pipe and are in a conductive state. To reduce heat loss, heating is performed at the bottom of the continuous granulation kettle. The volume of material in the equipment is generally 0.4 to 0.6 times the equipment volume. Although some heat is exhausted through the smoke exhaust ports 105, the heating furnace at the bottom starts heating in a timely manner according to the temperature design, maintaining a relatively uniform temperature within the kettle.
[0056] This application obtains an efficient high-temperature continuous granulation kettle by designing a reasonable aspect ratio of the kettle body, a reasonable arrangement of the stirring mechanism, a reasonable division of the heating area, a reasonable temperature control method, etc., which is suitable for high-temperature continuous granulation of battery negative electrode materials, and can achieve uniform temperature control, efficient granulation process and stable continuous production.
[0057] Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application should be included in the scope of protection of the present application.
Claims
1. A continuous granulation kettle, characterized in that: It comprises a kettle body (1), a stirring mechanism (2), a rotary drive mechanism (3) and a temperature control mechanism (4); The stirring mechanism (2) is installed in the kettle body (1); the stirring mechanism (2) comprises a plurality of flat blades (201), a plurality of support rods (202) and a main shaft (203); the plurality of support rods (202) are fixed to the circumference of the main shaft (203) along a plurality of axial directions, and one flat blade (201) is fixed to one end of each support rod (202) away from the main shaft (203); a plurality of flat blades (201) are installed on each axis, the flat blades (201) are perpendicular to the main shaft (203), and the deflection angle of the flat blades (201) relative to the axis is 5-15°, and each axis has a flat blade (201) with a positive deflection of 5-15° and a flat blade (201) with a negative deflection of 5-15°; The rotary drive mechanism (3) is arranged outside the kettle body (1), and the rotary drive mechanism (3) is connected to one end of the main shaft (203); the temperature control mechanism (4) is arranged on the peripheral side of the kettle body (1).
2. The continuous granulation kettle according to claim 1, characterized in that: The plurality of support rods (202) are fixed on the circumferential side of the main shaft (203) along four axial directions, and adjacent axes are arranged at a central angle of 90°.
3. The continuous granulation kettle according to claim 2, characterized in that: The distance between adjacent support rods (202) in each axial direction is equal to a.
4. The continuous granulation kettle according to claim 3, characterized in that: The support rods (202) between adjacent axes are staggered and alternately arranged, and the support rods (202) on two axes that are opposite to each other at a central angle of 180 degrees are relatively flush arranged.
5. The continuous granulation kettle according to claim 4, characterized in that: Two flat blades (201) installed on two relatively flush support rods (202) form a group of alignment blades; when one or two flat blades (201) among the alignment blades are flat blades (201) with a reverse deflection of 5 to 15 degrees, the alignment blades are called reverse blades; When there is no flat blade (201) with a reverse deflection of 5 to 15 degrees among the aligned blades, the aligned blades are called forward blades; one group of reverse blades is provided at intervals of 2 to 4 groups, and the rest are forward blades.
6. The continuous granulation kettle according to any one of claims 1 to 5, characterized in that: Each of the support rods (202) is a straight rod of equal length, and each of the support rods (202) is vertically connected to the main shaft (203); the center line of the support rod (202) is on the plane where the flat paddle (201) is located.
7. The continuous granulation kettle according to claim 1, characterized in that: The temperature control mechanism (4) comprises a furnace (402), two insulation layers (403), two heating elements (404) and a heat insulating element (405); The furnace (402) is sleeved outside the kettle body (1); the heat insulating member (405) is arranged between the kettle body (1) and the furnace (402); and the heat insulating member (405) is arranged in a ring at the middle position of the kettle body (1), dividing the space between the kettle body (1) and the furnace (402) into two parts, namely a first space and a second space; the first part of the space is installed with one of the heat insulating layer (403) and one of the heating members (404), and the second part of the space is installed with another heat insulating layer (403) and another of the heating members (404); both parts of the space are installed with temperature sensors (408); the heat insulating layer (403) is sleeved at intervals on the outer peripheral side of the kettle body (1), the heating member (404) is arranged between the heat insulating layer (403) and the kettle body (1), and the temperature sensor (408) is arranged between the heating member (404) and the kettle body (1).
8. The continuous granulation kettle according to claim 7, characterized in that: The continuous granulation kettle includes four electric heating zones, namely: a first electric heating zone (409) located at the upper part of the first space, a second electric heating zone (410) located at the upper part of the second space, a third electric heating zone (411) located at the lower part of the first space, and a fourth electric heating zone (412) located at the lower part of the second space; each of the four electric heating zones is equipped with a temperature sensor (408).
9. The continuous granulation kettle according to claim 1, characterized in that: The ratio of the inner length to the inner diameter of the kettle body (1) is 8-10.
10. The continuous granulation kettle according to claim 1, characterized in that: The kettle body (1) has a feed port (103), a discharge port (104) and a smoke exhaust port (105); the feed port (103) is located at one end of the upper surface of the kettle body (1); the discharge port (104) is located at the other end of the lower surface of the kettle body (1); and the smoke exhaust port (105) is located at one end of the upper surface of the kettle body (1) away from the feed port (103).