A flash drying device for cobalt hydroxide production

Abstract

The present application relates to the technical field of drying, in particular to a flash drying device for cobalt hydroxide production, which comprises a drying cylinder, a fan blade, a ceramic ring and a primary separation assembly, a drying cavity is formed in the drying cylinder, the fan blade is rotatably arranged at the lower part of the drying cavity, the fan blade can rotate around its axis to drive the air in the drying cavity to move spirally from bottom to top, and the ceramic ring is arranged at the upper part of the drying cavity. The primary separation assembly is arranged, the materials not discharged from the drying cavity through the ceramic ring will fall into the first vortex disc, the materials with different particle sizes are adaptively crushed in the first vortex disc, so that the particle uniformity of the materials entering the drying cavity from the first vortex disc again is improved, and in addition, the larger the particle size of the materials is, the longer the residence time of the materials in the primary separation assembly is, so that the temperature uniformity of the materials is also improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of drying equipment, in particular to a flash drying device for cobalt hydroxide production. BACKGROUND

[0002] Cobalt hydroxide is an inorganic compound, which exists in the form of rare minerals in nature, and its appearance is in the form of red to pink solid crystals. Cobalt hydroxide has certain hygroscopicity and is easy to absorb moisture in the air, which not only may cause changes in its physical properties, but also may cause chemical changes, thereby affecting its purity and subsequent use effect.

[0003] In order to prevent changes in the physical and chemical properties of cobalt hydroxide, it is necessary to dry the cobalt hydroxide. The drying equipment for drying cobalt hydroxide in the prior art usually includes microwave drying equipment, rotary flash drying machine and vacuum drying machine, etc., among which the rotary flash drying machine is a kind of drying machine that is used more frequently, because the rotary flash drying machine is more suitable for processing fine-grained materials. It uses the high-speed hot air generated to fully contact with the material, so as to achieve the purpose of instant drying of the material, and the drying efficiency is high. At the same time, because the drying time is short, the original characteristics of the material can also be better guaranteed. The rotary flash drying machine includes a drying cylinder, a guide fan blade and a ceramic ring. The drying cylinder is vertically placed, the guide fan blade is arranged at the lower part of the cylinder cavity of the drying cylinder, and the ceramic ring is arranged at the upper part of the cylinder cavity of the drying cylinder. In use, high-temperature air is introduced into the drying cylinder from the lower part of the drying cylinder, and the material is also introduced into the cylinder cavity of the drying cylinder from the lower part of the drying cylinder. Under the driving action of the guide fan blade, the high-temperature air spirally rises from bottom to top along the cylinder cavity of the drying cylinder. In this process, the material introduced into the cylinder cavity of the drying cylinder from the lower part of the drying cylinder moves synchronously from bottom to top along with the high-temperature air. When the material moves to the position of the ceramic ring, the material with a particle size smaller than the filtering particle size of the ceramic ring is directed discharged to the discharge port through the ceramic ring, while the material with a particle size larger than the filtering particle size of the ceramic ring is accumulated and then slides down to the area where the guide fan blade is located at the lower part of the cylinder cavity of the drying cylinder. Under the cutting action of the guide fan blade, the particle size of the material is reduced. The material with reduced particle size continues to spirally rise to the position of the ceramic ring under the driving action of the guide fan blade. Similarly, the material with a particle size smaller than the filtering particle size of the ceramic ring is discharged through the ceramic ring, while the material with a particle size larger than the filtering particle size of the ceramic ring is accumulated and then falls down and is cut by the guide fan blade again. In this way, the drying of the material is realized and the difference in particle size of the material is ensured not to be too large. However, the existing rotary flash drying machine has the following problems in use: during the drying process, the fallen material is mixed with the new material introduced into the cylinder cavity of the drying cylinder, and the temperature difference between the new and old materials is obvious, so the problem of uneven heating is easy to occur during the drying process. SUMMARY

[0004] Therefore, it is necessary to provide a flash drying device for cobalt hydroxide production to address the problems existing in current drying equipment and solve the problem of uneven material temperature during drying.

[0005] The above objectives are achieved through the following technical solutions:

[0006] A flash drying apparatus for cobalt hydroxide production, comprising:

[0007] The drying cylinder has a drying chamber inside;

[0008] The fan blades are rotatably located at the bottom of the drying chamber. The fan blades can rotate around their axis to drive the air in the drying chamber to move spirally from bottom to top.

[0009] The ceramic separator ring is located in the upper part of the drying chamber;

[0010] The primary separation component includes a first vortex and elastic blades. The first vortex is coaxially mounted on the inner peripheral wall of the drying chamber and is located below the precipitate ring. The lower end of the first vortex is closed and the upper end is open. The innermost side of the spiral groove of the first vortex is provided with a feed inlet connected to it. The spacing between the spiral grooves of the first vortex decreases from the inside to the outside. There are multiple elastic blades, which are equally spaced along the spiral groove of the first vortex on the groove wall of the first vortex.

[0011] Preferably, an inclined guide plate is provided on the upper peripheral wall of the first vortex, and the lower end of the inclined guide plate is located above the middle area of ​​the first vortex.

[0012] Preferably, the groove wall of the first vortex has a plurality of separation holes evenly spaced in the circumferential direction, and the separation holes penetrate the first vortex radially.

[0013] Preferably, the flash drying device for cobalt hydroxide production further includes a secondary separation component. The secondary separation component includes a second vortex and a spiral guide bar. The second vortex is coaxially disposed on the inner peripheral wall of the drying chamber and is located below the first vortex. The upper end of the second vortex is closed, and the upper end of the second vortex and the lower end of the first vortex are connected at the outermost position of their spiral grooves. The innermost side of the spiral groove of the second vortex is provided with a discharge port connected to it. The spiral guide bar is disposed on the groove wall of the second vortex and extends from bottom to top along the axis of the second vortex and from the outside to the inside along the radial direction of the second vortex. The spacing of the spiral guide bars is smaller than the spacing of the outermost spiral groove of the first vortex, and the width of the spiral guide bars decreases from bottom to top.

[0014] Preferably, the secondary separation component further includes a first air supply pipe, which is disposed on the outer peripheral wall of the drying cylinder and is connected to the spiral groove of the first vortex, and faces the outermost spiral groove of the first vortex.

[0015] Preferably, the secondary separation component further includes a second air supply pipe, which is disposed on the outer peripheral wall of the drying cylinder and is connected to the spiral groove of the second vortex, and faces the outermost spiral groove of the second vortex.

[0016] Preferably, a feeding pipe is provided at the lower part of the drying cylinder, the feeding pipe is connected to the inside of the drying chamber, and the feeding pipe is located above the fan blades.

[0017] Preferably, the upper part of the drying cylinder is provided with a discharge pipe, which is connected to the inside of the drying chamber and is located above the ceramic ring.

[0018] Preferably, the flash drying apparatus for cobalt hydroxide production further includes a frame, on which a drive assembly is provided for driving the fan blades to rotate around its axis.

[0019] Preferably, the drive assembly includes a motor, a first pulley, a second pulley, and a main shaft. The motor is mounted on the frame, the first pulley is fixedly connected to the output shaft of the motor, the upper end of the main shaft is fixedly connected to the fan blade, the lower end of the main shaft extends downward through the drying cylinder, the second pulley is fixedly connected to the lower end of the main shaft, and the second pulley is connected to the first pulley via a belt.

[0020] The beneficial effects of this invention are:

[0021] This invention features a primary separation component. Material that fails to exit the drying chamber through the ceramic ring falls into the first vortex plate, where materials of different particle sizes are adaptively crushed to improve the particle uniformity of the material re-entering the drying chamber from the first vortex plate. Furthermore, larger particle sizes result in a longer residence time of the material in the first vortex plate, thus also improving the temperature uniformity of the material. Attached Figure Description

[0022] Figure 1 This is an overall schematic diagram of a flash drying apparatus for cobalt hydroxide production according to the present invention;

[0023] Figure 2 for Figure 1 Top view;

[0024] Figure 3 for Figure 2 Sectional view of AA;

[0025] Figure 4 for Figure 3 A magnified schematic diagram of the structure at point B in the middle;

[0026] Figure 5 for Figure 1 Side view;

[0027] Figure 6 for Figure 5DD section view;

[0028] Figure 7 for Figure 3 A magnified schematic diagram of the structure at point C;

[0029] Figure 8 for Figure 5 EE section view;

[0030] Figure 9 This is a schematic diagram of the connection of the drying cylinder in a flash drying device for cobalt hydroxide production according to the present invention.

[0031] in:

[0032] 100. Drying cylinder; 110. Drying chamber; 120. Feeding pipe; 130. Discharge pipe;

[0033] 200. Fan blades;

[0034] 300. Tao Xihuan;

[0035] 400, Primary separation component; 410, First vortex plate; 420, Flexible blade; 430, Feed inlet; 440, Inclined guide plate; 450, Separation hole; 460, First air supply pipe;

[0036] 500, Secondary separation component; 510, Second vortex; 520, Spiral guide bar; 530, Discharge port; 540, Second air supply pipe; 550, Connecting groove;

[0037] 600, rack;

[0038] 700, Drive assembly; 710, Motor; 720, First pulley; 730, Second pulley; 740, Main shaft;

[0039] 800. Baghouse dust collector; 810. Dust collection hopper; 820. First waste heat recovery pipe; 830. Second waste heat recovery pipe; 840. Material conveying pipe;

[0040] 900. Roasting oven; 910. Blower. Detailed Implementation

[0041] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below through embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0042] The component designations used in this document, such as "first" and "second," are merely for distinguishing the described objects and do not have any sequential or technical meaning. The terms "connection" and "linkage" used in this invention, unless otherwise specified, include both direct and indirect connections (linkages). It should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are used only for the convenience of describing the invention and simplifying the description. They 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 limiting the invention.

[0043] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0044] like Figures 1 to 9 As shown, a flash drying device for cobalt hydroxide production includes a drying cylinder 100, fan blades 200, a ceramic separator ring 300, and a primary separation assembly 400. The drying cylinder 100 has a drying chamber 110 inside. The fan blades 200 are rotatably disposed in the lower part of the drying chamber 110 and can rotate around their axis to drive the air in the drying chamber 110 to move spirally upwards. The ceramic separator ring 300 is disposed in the upper part of the drying chamber 110. The primary separation assembly 400 includes a first vortex plate 410 and an elastic blade 420. The first vortex plate 410 is coaxially disposed on the inner peripheral wall of the drying chamber 110. The first vortex 410 is located below the ceramic ring 300. The lower end of the first vortex 410 is closed and the upper end is open. The innermost side of the spiral groove of the first vortex 410 is provided with a feed inlet 430 connected to it. The spacing between the spiral grooves of the first vortex 410 decreases from the inside to the outside. There are multiple elastic blades 420. Multiple elastic blades 420 are equally spaced on the groove wall of the first vortex 410 along the spiral groove. The elastic blades are made of spring steel. Their function is to trigger the elastic blades to undergo elastic deformation when the material passes through the elastic blades to achieve flexible crushing and avoid the material being over-crushed.

[0045] It should be added that, as Figure 3As shown, a feeding pipe 120 is provided at the lower part of the drying cylinder 100. The feeding pipe 120 is connected to the inside of the drying chamber 110 and is located above the fan blades 200. The purpose of providing the feeding pipe 120 is to feed the material to be dried and high-temperature air into the drying chamber 110 through the feeding pipe 120.

[0046] It should also be noted that, such as Figure 3 and Figure 9 As shown, a discharge pipe 130 is provided at the upper part of the drying cylinder 100. The discharge pipe 130 is connected to the inside of the drying chamber 110 and is located above the ceramic ring 300. The end of the discharge pipe 130 away from the drying cylinder 100 is connected to the material conveying pipe 840 of the bag filter 800, which is used to send the dried material into the material conveying pipe 840 for collection. The discharge pipe 130 is provided to discharge the material crushed into smaller particle sizes along with the high-temperature air out of the discharge pipe 130.

[0047] It should also be noted that the temperature of the air inside the drying chamber should be maintained between 250° and 300°.

[0048] During operation, the operator connects the feeding pipe 120 to the feeding equipment, allowing the material to be dried and the high-temperature air to continuously enter the drying chamber 110 at a preset flow rate. Simultaneously, the operator connects the discharge pipe 130 to the inlet of the bag filter 800, enabling the dried material to be continuously extracted from the drying chamber 110. At the same time, the operator starts the fan blades 200, causing them to rotate around their axis. Under the rotation of the fan blades 200, the material falling due to gravity is cut and broken by the fan blades 200. Furthermore, the circumferential rotation of the fan blades 200 also drives the high-temperature air within the drying chamber 110 to... As the material spirals upwards, smaller particles experience less centrifugal force due to their smaller mass, thus remaining near the center of the drying chamber 110. After reaching the position of the precipitating ring 300, these smaller particles are drawn into the discharge pipe 130. Larger and medium-sized particles, due to their relatively larger mass, experience greater centrifugal force. Therefore, these larger particles rise to the height of the first vortex plate 410 and adhere to its inner wall, passing through the first vortex plate 410. The material enters the spiral groove of the first vortex plate 410 through the inlet 430 on the inner peripheral wall of the drying chamber 110. Driven by the high-temperature air within the drying chamber 110, the material moves from the inside to the outside along the spiral groove of the first vortex plate 410. Since the groove spacing of the first vortex plate 410 decreases from the inside to the outside, larger particles will come into contact with a greater number of elastic blades 420 during the movement along the spiral groove of the first vortex plate 410. This facilitates the thorough crushing of larger particles. Medium-sized particles, compared to larger particles, will come into contact with a smaller number of elastic blades 420. With fewer elastic blades 420 in contact, medium-sized materials are prevented from being over-crushed, thus ensuring that the particle size of the material after passing through the spiral groove of the first vortex 410 is basically uniform. In addition, since medium-sized materials are in contact with fewer elastic blades 420, they move to the outermost edge of the spiral groove of the first vortex 410 faster than larger-sized materials and are discharged into the discharge pipe 130. Therefore, medium-sized materials have a shorter residence time in the first vortex 410 than larger-sized materials, which helps to improve the temperature uniformity of the material discharged into the discharge pipe 130.

[0049] It is understandable that, since the upper end of the first vortex 410 is open and the discharge pipe 130 is located above the first vortex 410, under the negative pressure suction of the discharge pipe 130, the material that has been crushed into smaller particles can overcome its own gravity and move towards the direction of the discharge pipe 130 after moving to the outermost side of the spiral groove of the first vortex 410.

[0050] In a further embodiment, such as Figure 4 As shown, an inclined guide plate 440 is provided on the upper peripheral wall of the first vortex 410, and the lower end of the inclined guide plate 440 is located above the middle area of ​​the first vortex 410.

[0051] Understandably, during the upward spiral movement of smaller particles within the drying chamber 110, a certain amount of medium-sized particles will inevitably move to the location of the ceramic separator ring 300. However, these medium-sized particles cannot pass through the ceramic separator ring 300 due to its obstruction. Therefore, under their own gravity, they gradually fall onto the inclined guide plate 440 and slide downwards along its inclined surface, eventually falling from the upper end of the first vortex plate 410 into the middle region of its spiral groove. This allows the medium-sized particles to undergo further crushing within the spiral groove of the first vortex plate 410. It should be noted that the reason for allowing the medium-sized particles to fall into the middle region of the spiral groove of the first vortex plate 410 is to reduce their residence time within the first vortex plate 410 and to prevent them from being over-crushed due to excessive contact with the elastic blades 420, thereby improving particle uniformity and ensuring temperature uniformity.

[0052] It should also be noted that, such as Figure 6 As shown, in order to increase the dispersion of material in the region outside the spiral groove of the first vortex 410, in a further embodiment, the primary separation component 400 also includes a first air supply pipe 460. The first air supply pipe 460 is disposed on the outer peripheral wall of the drying cylinder 100, and the first air supply pipe 460 is connected to the spiral groove of the first vortex 410 and faces the spiral groove outside the first vortex 410.

[0053] When the material moves along the spiral groove of the first vortex 410 to a position facing the first air supply pipe 460, the kinetic energy of the material increases under the action of the high-temperature air output from the first air supply pipe 460. This increases the dispersion of the material on the outer side of the spiral groove of the first vortex 410, thereby preventing the material from falling to the lower part of the first vortex 410 under its own gravity before it reaches the outermost part of the first vortex 410.

[0054] It should also be noted that, such as Figure 9 As shown, the end of the first air supply pipe 460 away from the drying cylinder 100 is connected to the first waste heat recovery pipe 820 of the bag filter 800, which is used to send the waste heat exhaust gas in the bag filter 800 into the first vortex plate 410 to heat the material entering the first vortex plate 410. In addition, since the temperature of the waste heat exhaust gas in the bag filter 800 is lower than the air temperature in the drying chamber 110, the material in the first vortex plate 410 can also be prevented from overheating.

[0055] In a further embodiment, such as Figure 4 As shown, the first vortex 410 has several separation holes 450 evenly spaced around its groove wall in the circumferential direction. The separation holes 450 penetrate the first vortex 410 radially.

[0056] The separation hole 450 is designed so that smaller particles can be discharged in time through the separation hole 450 during the crushing process in the first vortex 410, thus avoiding over-crushing and overheating of smaller particles.

[0057] In a further embodiment, such as Figures 6 to 8 As shown, the flash drying apparatus for cobalt hydroxide production also includes a secondary separation component 500. The secondary separation component 500 includes a second vortex 510 and a spiral guide bar 520. The second vortex 510 is coaxially disposed on the inner peripheral wall of the drying chamber 110, and is located below the first vortex 410. The upper end of the second vortex 510 is closed, and the upper end of the second vortex 510 and the lower end of the first vortex 410 are connected at the outermost position of their spiral grooves. Specifically, the lower end of the outermost spiral groove of the second vortex 510 is connected to the outermost spiral groove of the first vortex 410. The upper end is connected by a connecting groove 550, which extends radially inward to the inner side of the first vortex 410. The innermost side of the spiral groove of the second vortex 510 is provided with a discharge port 530 connected thereto. The spiral guide bar 520 is provided on the groove wall of the second vortex 510, and the spiral guide bar 520 extends from bottom to top along the axis of the second vortex 510 and from outside to inside along the radial direction of the second vortex 510. The spacing of the spiral guide bars 520 is smaller than the spacing of the outermost spiral groove of the first vortex 410, and the width of the spiral guide bar 520 decreases from bottom to top.

[0058] It should also be noted that, in order for the material falling into the second vortex disk 510 to move from the outside to the inside along the spiral groove of the second vortex disk 510, in a further embodiment, such as... Figure 8 and Figure 9 As shown, the secondary separation component 500 also includes a second air supply pipe 540. The second air supply pipe 540 is disposed on the outer peripheral wall of the drying cylinder 100 and is connected to the spiral groove of the second vortex 510, facing the outermost spiral groove of the second vortex 510. The end of the second air supply pipe 540 away from the drying cylinder 100 is fixedly connected to the second waste heat recovery pipe 830 of the bag filter 800, which is used to send the waste heat exhaust gas in the second waste heat recovery pipe 830 into the second vortex 510 to heat the material in the second vortex 510 and drive the material to move in the spiral groove of the second vortex 510.

[0059] Since the upper end of the second vortex 510 and the lower end of the first vortex 410 are connected at the outermost position of their spiral grooves, the medium-sized particles moving to the outermost part of the first vortex 410 will fall into the lower part of the second vortex 510 under their own gravity through the connecting groove 550. Inevitably, a certain amount of smaller particles will also fall into the lower part of the second vortex 510 along with the medium-sized particles. Under the action of the exhaust gas output from the second air supply pipe 540, the material falling into the lower part of the second vortex 510... The material moves from the outside to the inside along the spiral grooves of the second vortex 510. Because the spacing of the spiral guide bars 520 is smaller than the spacing of the outermost spiral grooves of the first vortex 410, smaller particles are trapped between the spiral guide bars 520 and move from the outside to the inside along them. Medium-sized particles, because their size is larger than the spacing of the spiral guide bars 520, abut against the inner surface of the spiral guide bars 520 and move from the inside to the outside along the spiral grooves of the second vortex 510. This process effectively traps medium-sized particles and... Smaller particles separate out and move along the spiral guide bar 520 from the outside to the inside to the outlet 530, where they are discharged. Under the influence of the high-temperature air in the drying chamber 110, they continue to move upwards to the position of the granulation ring 300, passing through it into the discharge pipe 130. Because the width of the spiral guide bar 520 decreases from bottom to top, medium-sized particles move along the spiral groove of the second vortex 510 from the outside to the inside while also moving along the spiral guide bar. The inclined surface of 520 slides upwards. As medium-sized materials gradually approach the connecting groove 550, and because the spiral guide bar 520 has a certain width, the medium-sized materials pressing against the spiral guide bar 520 are closer to the middle area of ​​the spiral groove of the first vortex 410. When the medium-sized materials enter the middle area of ​​the spiral groove of the first vortex 410, the materials continue to be crushed in the first vortex 410, thereby crushing the medium-sized materials into smaller materials, so as to further improve the particle uniformity of the materials.

[0060] It should also be noted that, in order to increase the air pressure entering the spiral groove of the second vortex 510 through the second air supply pipe 540, a booster pump is specifically installed at the connection between the second waste heat recovery pipe 830 and the second air supply pipe 540 to increase the air pressure entering the second air supply pipe 540.

[0061] In a further embodiment, a flash drying apparatus for cobalt hydroxide production also includes a frame 600, on which a drive assembly 700 is disposed, the drive assembly 700 being used to drive the fan blades 200 to rotate around its axis.

[0062] In a further embodiment, the drive assembly 700 includes a motor 710, a first pulley 720, a second pulley 730, and a main shaft 740. The motor 710 is mounted on the frame 600. The first pulley 720 is fixedly connected to the output shaft of the motor 710. The upper end of the main shaft 740 is fixedly connected to the fan blade 200. The lower end of the main shaft 740 extends downward through the drying cylinder 100. The second pulley 730 is fixedly connected to the lower end of the main shaft 740 and is belt-connected to the first pulley 720.

[0063] When in use, the motor 710 is started, which drives the first pulley 720 to rotate, the first pulley 720 to rotate, the second pulley 730 to rotate, the second pulley 730 to rotate, the main shaft 740 to rotate, and the main shaft 740 to rotate, so that the fan blade 200 rotates around its axis.

[0064] In a further embodiment, such as Figure 9 As shown, the discharge pipe 130 is connected to the material inlet of the bag filter 800 via the material conveying pipe 840. The exhaust outlet of the bag filter 800 is connected to the first air supply pipe 460 via the first waste heat recovery pipe 820 and to the second air supply pipe 540 via the second waste heat recovery pipe 830. A dust collection hopper 810 is provided at the bottom of the bag filter 800 for collecting the dried material. The end of the dust collection hopper 810 away from the bag filter 800 is connected to the roasting furnace 900 for feeding the material in the dust collection hopper 810 into the roasting furnace 900 for roasting. The outlet of the roasting furnace 900 is connected to the blower 910 for extracting the roasted material from the roasting furnace 900.

[0065] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0066] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the appended claims.

Claims

1. A flash drying apparatus for cobalt hydroxide production, characterized in that, include: The drying cylinder has a drying chamber inside; The fan blades are rotatably located at the bottom of the drying chamber. The fan blades can rotate around their axis to drive the air in the drying chamber to move spirally from bottom to top. The ceramic separator ring is located in the upper part of the drying chamber; The primary separation component includes a first vortex and elastic blades. The first vortex is coaxially mounted on the inner circumferential wall of the drying chamber and is located below the diatomaceous ring. The lower end of the first vortex is closed, while the upper end is open. The innermost side of the spiral groove of the first vortex is provided with a feed inlet connected to it. The spacing between the spiral grooves of the first vortex decreases from the inside to the outside. There are multiple elastic blades, which are equally spaced along the spiral groove of the first vortex on the groove wall of the first vortex. The elastic blades are made of spring steel, and their function is to trigger the elastic blades to undergo elastic deformation when the material passes through them, thereby achieving flexible crushing. An inclined guide plate is provided on the upper peripheral wall of the first vortex, and the lower end of the inclined guide plate is located above the middle area of ​​the first vortex. The first vortex has several separation holes evenly spaced around its groove wall in the circumferential direction, and the separation holes penetrate the first vortex radially. It also includes a secondary separation component, which includes a second vortex and a spiral guide bar. The second vortex is coaxially arranged on the inner peripheral wall of the drying chamber and is located below the first vortex. The upper end of the second vortex is closed, and the upper end of the second vortex and the lower end of the first vortex are connected at the outermost position of their spiral grooves. The innermost side of the spiral groove of the second vortex is provided with a discharge port connected to it. The spiral guide bar is arranged on the groove wall of the second vortex and extends from bottom to top along the axis of the second vortex and from the outside to the inside along the radial direction of the second vortex. The spacing of the spiral guide bars is smaller than the spacing of the outermost spiral groove of the first vortex, and the width of the spiral guide bars decreases from bottom to top. The secondary separation assembly also includes a first air supply pipe and a second air supply pipe. The first air supply pipe is disposed on the outer peripheral wall of the drying cylinder and is connected to the spiral groove of the first vortex and faces the outermost spiral groove of the first vortex. The second air supply pipe is disposed on the outer peripheral wall of the drying cylinder and is connected to the spiral groove of the second vortex and faces the outermost spiral groove of the second vortex.

2. The flash drying apparatus for cobalt hydroxide production according to claim 1, characterized in that, A feeding pipe is provided at the lower part of the drying cylinder. The feeding pipe is connected to the inside of the drying chamber and is located above the fan blades.

3. The flash drying apparatus for cobalt hydroxide production according to claim 1, characterized in that, The upper part of the drying cylinder is provided with a discharge pipe, which is connected to the inside of the drying chamber and is located above the ceramic ring.

4. The flash drying apparatus for cobalt hydroxide production according to claim 1, characterized in that, The flash drying device for cobalt hydroxide production also includes a frame, on which a drive assembly is installed to drive the fan blades to rotate around its axis.

5. The flash drying apparatus for cobalt hydroxide production according to claim 4, characterized in that, The drive assembly includes a motor, a first pulley, a second pulley, and a main shaft. The motor is mounted on the frame. The first pulley is fixedly connected to the output shaft of the motor. The upper end of the main shaft is fixedly connected to the fan blades. The lower end of the main shaft extends downward through the drying cylinder. The second pulley is fixedly connected to the lower end of the main shaft and is connected to the first pulley via a belt.

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