Lithium cobalt oxide fine crushing process

Abstract

The invention discloses a lithium cobalt oxide fine crushing process which comprises a discharging mechanism, a feeding crushing mechanism and a separating mechanism, during use, a second motor of the starting mechanism drives a rotary crusher to rotate at a high speed, and meanwhile, a negative pressure mechanism arranged in a switching channel is started; the rotary crusher rotates at a high speed to be matched with a ring-shaped rack to shear and crush materials to be crushed, a separation mechanism rotating at a high speed is matched with a negative pressure mechanism in a transfer channel to generate negative pressure in a first mechanism inner cavity, and under the action of the negative pressure, the materials to be crushed enter a plurality of evenly-distributed blades through a feeding through groove; particles with small particle sizes enter a transfer channel under the action of negative pressure due to light weight, particles with large particle sizes are thrown to two sides by blades and fall between a rotary crusher and a ring-shaped rack through a material guide ring for further crushing, and screening can be realized while crushing is performed by arranging the rotary crusher, the ring-shaped rack and a separation mechanism. And the production efficiency can be improved.

Description

Technical Field

[0001] The invention relates to the technical field of lithium cobalt oxide production equipment, and in particular to a lithium cobalt oxide fine crushing process. Background Art

[0002] Lithium cobalt oxide is an inorganic compound with the chemical formula Li CoO2, which is generally used as the positive electrode material of lithium-ion batteries. It has the appearance of gray-black powder. Lithium cobalt oxide is generally prepared by low-heat solid-phase reaction method. The main feature of the process is to use high-purity and high-reactivity cobalt oxide nanopowder as raw material, and carry out high-precision metering, proportioning and mixing with lithium carbonate, and then sintering once. The sintered material is crushed once, and the crushed material is mixed and sintered twice. The secondary sintered material is ground, screened and iron-removed to obtain lithium cobalt oxide powder, the positive electrode material of lithium-ion batteries.

[0003] When lithium cobalt oxide is crushed for the second time after sintering, it needs to go through multiple crushing and screening by mechanical crushers and air flow crushers, which is not conducive to improving production efficiency. Summary of the invention

[0004] The object of the present invention is to provide a lithium cobalt oxide fine crushing process to solve the technical problem in the prior art that lithium cobalt oxide needs to be crushed and screened multiple times by a mechanical crusher and an air flow crusher when it is subjected to secondary crushing after sintering.

[0005] The technical problem to be solved by the present invention can be achieved by the following technical solutions:

[0006] A lithium cobalt oxide fine crushing process, comprising:

[0007] Step 1: The material to be crushed is transported into the second inner cavity of the mechanism through the feed pipe, and the material to be crushed is arranged above the rotary crusher and between the ring-shaped racks.

[0008] Step 2: The first motor of the starting mechanism drives the separation mechanism to rotate at high speed, the second motor of the starting mechanism drives the rotary crusher to rotate at high speed, and at the same time, the negative pressure mechanism arranged in the transfer channel is started.

[0009] Step 3: The rotary crusher rotates at high speed and cooperates with the ring-shaped rack to shear and crush the material to be crushed. The high-speed rotating separation mechanism cooperates with the negative pressure mechanism in the transfer channel to create a negative pressure in the inner cavity of the mechanism. Under the action of negative pressure, the material to be crushed passes through the feed slot into several evenly distributed blades.

[0010] Step 4: Particles with smaller particle sizes enter the transfer channel under the action of negative pressure due to their lighter mass, and particles with larger particle sizes are thrown to both sides by the blades, pass through the guide ring and fall into the rotating crusher and the ring-shaped rack for further crushing.

[0011] A lithium cobalt oxide fine crushing device, comprising:

[0012] The discharging mechanism comprises a horizontally arranged upper cover, a mechanism inner cavity 1 is opened on the lower end surface of the upper cover, a transfer channel is connected above the upper cover, a transmission shaft is arranged inside the transfer channel and in the mechanism inner cavity 1, a connecting plate is fixedly connected to the lower end of the transmission shaft, and a mechanism motor 1 for driving the transmission shaft to rotate is arranged on the outer shell of the transfer channel;

[0013] The feeding and crushing mechanism comprises a mechanism body, wherein the mechanism body is provided with a second mechanism inner cavity, a rotating bottom plate is provided on the bottom surface of the second mechanism inner cavity, a rotating crusher is fixedly installed on the rotating bottom plate, a ring-shaped rack is provided above the rotating crusher, a material guide ring is provided above the ring-shaped rack, a mechanism motor second for driving the rotating bottom plate to rotate is provided on the mechanism body, and an upper cover is provided at the opening of the second mechanism inner cavity of the mechanism body;

[0014] The separation mechanism includes a mounting plate, which is fixedly connected to the connecting plate. A main shaft is fixedly connected to the lower end surface of the mounting plate. A supporting plate is fixedly connected to the lower end of the main shaft. Feeding grooves are evenly distributed in an annular shape and penetrate the supporting plate. Blades are evenly distributed in an annular shape and fixedly connected to the upper end surface of the supporting plate.

[0015] As a further solution of the present invention: a connecting channel is fixedly connected above the upper cover, and the transfer channel is connected to the interior of the mechanism inner cavity one through the connecting channel. The transfer channel is a channel with a square cross-section. The mechanism motor one is fixedly connected to the outer wall of the transfer channel. A mechanism bearing is embedded through the transfer channel. A drive shaft one is coaxially fixedly connected to the driving end of the mechanism motor one. The outer ring of the mechanism bearing is fixedly connected to the transfer channel. The drive shaft is coaxially sleeved and fixedly connected to the inner ring of the mechanism bearing. The transmission shaft and the drive shaft one are coaxially fixedly connected.

[0016] As a further solution of the present invention: a connecting strap is fixedly connected to the opening of the inner cavity of the upper cover, a mounting frame is fixedly connected to the inner wall of the inner cavity of the upper cover, a stabilizing bearing is embedded through the mounting frame, the outer ring of the stabilizing bearing is fixedly connected to the mounting frame, and the transmission shaft is sleeved through and fixedly connected to the inner ring of the stabilizing bearing.

[0017] As a further solution of the present invention: a second connecting strap is fixedly connected to the second opening of the inner cavity of the mechanism main body, a first connecting strap is fixedly installed on the second connecting strap, a second mechanism motor is fixedly connected to the mechanism main body, a second driving shaft is fixedly connected to the driving end of the mechanism main body, a connecting bearing is embedded through the mechanism main body, an outer ring of the connecting bearing is fixedly connected to the mechanism main body, and the second driving shaft is coaxially sleeved and fixedly connected to the inner ring of the connecting bearing.

[0018] As a further solution of the present invention: the second driving shaft is coaxially fixedly connected to the rotating base plate, the ring-shaped rack is fixedly connected to the inner wall of the second mechanism cavity, the second mounting frame is fixedly connected to the inner wall of the second mechanism cavity, and the guide ring is fixedly connected to the second mounting frame.

[0019] As a further solution of the present invention: a feed pipe is fixedly connected to the side end of the mechanism body, and the feed pipe is communicated with the second inner cavity of the mechanism.

[0020] As a further solution of the present invention: flange rings are fixedly connected to the second bottom surface of the inner cavity of the mechanism, and the rotating bottom plate is movably arranged on the flange rings.

[0021] Beneficial effects of the present invention:

[0022] 1. When the present invention is in use, the second motor of the starting mechanism drives the rotary crusher to rotate at a high speed, and at the same time, the negative pressure mechanism arranged in the transfer channel is started. The rotary crusher rotates at a high speed and cooperates with the ring-shaped rack to shear and crush the material to be crushed. The separation mechanism rotating at a high speed cooperates with the negative pressure mechanism in the transfer channel to create a negative pressure in the inner cavity of the mechanism. Under the action of the negative pressure, the material to be crushed passes through the feed slot and enters a number of evenly distributed blades. The particles with smaller particle sizes enter the transfer channel under the action of the negative pressure due to their lighter weight. The particles with larger particle sizes are thrown to both sides by the blades and fall into the rotary crusher and the ring-shaped rack through the guide ring for further crushing. By arranging the rotary crusher, the ring-shaped rack and the separation mechanism, screening can be achieved while crushing, which is conducive to improving production efficiency.

[0023] 2. The mechanism motor 1 of the present invention drives the separation mechanism through the drive shaft 1 and the transmission shaft, and the mechanism motor 2 drives the rotary crusher on the rotating bottom plate through the drive shaft 2. Compared with the prior art that realizes transmission through belts, the transmission method of this device is more direct and efficient. The belt needs to be frequently maintained and replaced during use. This device can reduce the workload of maintenance personnel and is conducive to improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The present invention will be further described below in conjunction with the accompanying drawings.

[0025] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0026] Figure 2 It is a schematic diagram of the three-dimensional structure of the present invention;

[0027] Figure 3 It is a schematic diagram of the three-dimensional structure of the discharging mechanism of the present invention;

[0028] Figure 4 It is a schematic diagram of the cross-sectional structure of the discharging mechanism of the present invention;

[0029] Figure 5It is a schematic diagram of the cross-sectional structure of the feeding and crushing mechanism of the present invention;

[0030] Figure 6 Schematic diagram of the three-dimensional structure of the separation mechanism of the present invention Figure 1 ;

[0031] Figure 7 Schematic diagram of the three-dimensional structure of the separation mechanism of the present invention Figure 2 .

[0032] In the figure: 1. discharging mechanism; 11. upper cover; 12. mechanism inner cavity 1; 13. connecting strap 1; 14. connecting channel; 15. transfer channel; 16. mechanism motor 1; 17. drive shaft 1; 18. mechanism bearing; 19. mounting frame 1; 110. transmission shaft; 111. connecting plate; 2. feeding and crushing mechanism; 21. mechanism body; 22. mechanism inner cavity 2; 23. feeding pipe; 24. connecting strap 2; 25. mounting frame 2; 26. guide ring; 27. mechanism motor 2; 28. flange ring; 29. ​​drive shaft 2; 210. rotating bottom plate; 211. rotary crusher; 212. ring-shaped rack; 3. separation mechanism; 31. mounting plate; 32. main shaft; 33. supporting plate; 34. feeding channel; 35. blades; 36. reinforcement ring plate. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] like Figure 1-Figure 7 As shown, a device for fine crushing of lithium cobalt oxide comprises:

[0035] The discharging mechanism 1 comprises a horizontally arranged upper cover 11, a mechanism inner cavity 12 is provided on the lower end surface of the upper cover 11, a transfer channel 15 is connected above the upper cover 11, a transmission shaft 110 is provided inside the transfer channel 15 and in the mechanism inner cavity 12, a connecting plate 111 is fixedly connected to the lower end of the transmission shaft 110, and a mechanism motor 16 for driving the transmission shaft 110 to rotate is provided on the outer shell of the transfer channel 15;

[0036] The feeding and crushing mechanism 2 comprises a mechanism body 21, a mechanism inner cavity 22 is opened on the mechanism body 21, a rotating bottom plate 210 is arranged on the bottom surface of the mechanism inner cavity 22, a rotating crusher 211 is fixedly installed on the rotating bottom plate 210, a ring-shaped rack 212 is arranged above the rotating crusher 211, a material guide ring 26 is arranged above the ring-shaped rack 212, a mechanism motor 27 for driving the rotating bottom plate 210 to rotate is arranged on the mechanism body 21, and an upper cover 11 is arranged at the opening of the mechanism inner cavity 22 of the mechanism body 21;

[0037] The separation mechanism 3 includes a mounting plate 31, which is fixedly connected to the connecting plate 111. A main shaft 32 is fixedly connected to the lower end surface of the mounting plate 31, and a supporting plate 33 is fixedly connected to the lower end of the main shaft 32. Feeding grooves 34 are evenly distributed in an annular shape and penetrate the supporting plate 33, and blades 35 are evenly distributed in an annular shape and fixedly connected on the upper end surface of the supporting plate 33.

[0038] In some specific embodiments, a negative pressure mechanism is provided in the transfer channel 15, and the negative pressure mechanism can be a negative pressure fan or a negative pressure pump.

[0039] A connecting channel 14 is fixedly connected to the top of the upper cover 11, and a transfer channel 15 is connected to the inside of the mechanism inner cavity 12 through the connecting channel 14. The transfer channel 15 is a channel with a square cross-section. A mechanism motor 16 is fixedly connected to the outer wall of the transfer channel 15. A mechanism bearing 18 is embedded through the transfer channel 15. A drive shaft 17 is coaxially fixedly connected to the driving end of the mechanism motor 16. The outer ring of the mechanism bearing 18 is fixedly connected to the transfer channel 15. The drive shaft 17 is coaxially sleeved and fixedly connected to the inner ring of the mechanism bearing 18. The transmission shaft 110 and the drive shaft 17 are coaxially fixedly connected.

[0040] A connecting strap 13 is fixedly connected to the opening of the mechanism inner cavity 12 of the upper cover 11, a mounting frame 19 is fixedly connected to the inner wall of the mechanism inner cavity 12, a stable bearing is embedded through the mounting frame 19, the outer ring of the stable bearing is fixedly connected to the mounting frame 19, and a transmission shaft 110 is sleeved through and fixedly connected to the inner ring of the stable bearing.

[0041] A connecting strap 24 is fixedly connected to the opening of the mechanism inner cavity 22 of the mechanism main body 21, and a connecting strap 13 is fixedly installed on the connecting strap 24. A mechanism motor 27 is fixedly connected to the mechanism main body 21, and a driving shaft 29 is fixedly connected to the driving end of the mechanism main body 21. A connecting bearing is embedded through the mechanism main body 21, and the outer ring of the connecting bearing is fixedly connected to the mechanism main body 21. The driving shaft 29 is coaxially sleeved and fixedly connected to the inner ring of the connecting bearing. The driving shaft 29 and the rotating base plate 210 are coaxially fixedly connected. The ring-shaped rack 212 is fixedly connected to the inner wall of the mechanism inner cavity 22, and a mounting frame 25 is fixedly connected to the inner wall of the mechanism inner cavity 22, and a guide ring 26 is fixedly connected to the mounting frame 25.

[0042] In some specific implementation schemes, a feed pipe 23 is fixedly connected to the side end of the mechanism body 21 , and the feed pipe 23 is communicated with the second inner cavity 22 of the mechanism.

[0043] In some specific embodiments, a reinforcement ring plate 36 is fixedly connected between a plurality of evenly distributed blades 35 .

[0044] In some specific implementation schemes, a flange ring 28 is fixedly connected to the bottom surface of the second mechanism inner cavity 22 , and the rotating base plate 210 is movably disposed on the flange ring 28 .

[0045] A lithium cobalt oxide fine crushing process comprises the following steps:

[0046] Step 1: The material to be crushed is transported into the second mechanism inner cavity 22 through the feed pipe 23 , and the material to be crushed is arranged above the rotary crusher 211 and between the ring-shaped racks 212 .

[0047] Step 2: The starting mechanism motor 16 drives the separation mechanism 3 to rotate at high speed, and the starting mechanism motor 2 27 drives the rotary crusher 211 to rotate at high speed, and at the same time starts the negative pressure mechanism provided in the transfer channel 15.

[0048] Step 3: The rotary crusher 211 rotates at high speed and cooperates with the ring-shaped rack 212 to shear and crush the material to be crushed. The high-speed rotating separation mechanism 3 cooperates with the negative pressure mechanism in the transfer channel 15 to create a negative pressure in the inner cavity 12 of the mechanism. Under the action of the negative pressure, the material to be crushed passes through the feed slot 34 and enters a number of evenly distributed blades 35.

[0049] Step 4: Particles with smaller particle sizes enter the transfer channel 15 under the action of negative pressure due to their lighter weight, and particles with larger particle sizes are thrown to both sides by the blades 35, pass through the guide ring 26 and fall into the rotating crusher 211 and the ring-shaped rack 212 for further crushing.

[0050] In order to facilitate the understanding of the embodiments of this solution by those skilled in the art, the working principle of this solution is briefly described in combination with specific application scenarios:

[0051] The starting mechanism motor 27 drives the rotary crusher 211 to rotate at high speed, and at the same time starts the negative pressure mechanism set in the transfer channel 15. The rotary crusher 211 rotates at high speed to cooperate with the ring-shaped rack 212 to shear and crush the material to be crushed. The high-speed rotating separation mechanism 3 cooperates with the negative pressure mechanism in the transfer channel 15 to create a negative pressure in the mechanism inner cavity 12. Under the action of the negative pressure, the material to be crushed passes through the feed slot 34 and enters a plurality of evenly distributed blades 35. The particles with smaller particle sizes enter the transfer channel 15 due to their lighter weight under the action of the negative pressure, and the particles with larger particle sizes are thrown to both sides by the blades 35 and fall into the rotary crusher 2 through the guide ring 26. 11 and the ring-shaped rack 212 for further crushing. By setting the rotating crusher 211, the ring-shaped rack 212 and the separation mechanism 3, screening can be achieved while crushing, which is beneficial to improving production efficiency. The mechanism motor 16 drives the separation mechanism 3 through the drive shaft 17 and the transmission shaft 110, and the mechanism motor 27 drives the rotating crusher 211 on the rotating bottom plate 210 through the drive shaft 29. Compared with the prior art that realizes transmission through belts, the transmission method of this device is more direct and efficient. The belt needs to be frequently maintained and replaced during use. The present device can reduce the workload of maintenance personnel and is beneficial to improving production efficiency.

[0052] Several embodiments of the present invention are described in detail above, but the embodiments of the present invention are not limited thereto and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. A lithium cobalt oxide fine crushing process, characterized in that: The steps include: S1: The material to be crushed is transported into the second inner cavity (22) of the mechanism through the feed pipe (23), and the material to be crushed is arranged above the rotary crusher (211) and between the ring-shaped racks (212); S2: The first starting mechanism motor (16) drives the separation mechanism (3) to rotate at high speed, and the second starting mechanism motor (27) drives the rotary crusher (211) to rotate at high speed, and at the same time, the negative pressure mechanism provided in the transfer channel (15) is started; S3: The rotary crusher (211) rotates at high speed and cooperates with the ring-shaped rack (212) to shear and crush the material to be crushed. The high-speed rotating separation mechanism (3) cooperates with the negative pressure mechanism in the transfer channel (15) to create a negative pressure in the inner cavity (12) of the mechanism. Under the action of the negative pressure, the material to be crushed passes through the feed slot (34) and enters a plurality of evenly distributed blades (35); S4: Particles with smaller particle sizes enter the transfer channel (15) under the action of negative pressure due to their lighter mass, while particles with larger particle sizes are thrown to both sides by the blades (35) and pass through the guide ring (26) and fall into the rotating crusher (211) and the ring-shaped rack (212) for further crushing.

2. The device for the fine crushing process of lithium cobalt oxide according to claim 1 is characterized in that: include: The discharging mechanism (1) comprises an upper cover (11) arranged horizontally, a mechanism inner cavity (12) being provided on the lower end surface of the upper cover (11), a transfer channel (15) being connected to the upper part of the upper cover (11), a transmission shaft (110) being provided inside the transfer channel (15) and inside the mechanism inner cavity (12), a connecting plate (111) being fixedly connected to the lower end of the transmission shaft (110), and a mechanism motor (16) for driving the transmission shaft (110) to rotate being provided on the outer shell of the transfer channel (15); The material feeding and crushing mechanism (2) comprises a mechanism body (21), wherein the mechanism body (21) is provided with a mechanism inner cavity 2 (22), a rotating bottom plate (210) is arranged on the bottom surface of the mechanism inner cavity 2 (22), a rotating crusher (211) is fixedly mounted on the rotating bottom plate (210), a ring-shaped rack (212) is arranged above the rotating crusher (211), a material guide ring (26) is arranged above the ring-shaped rack (212), a mechanism motor 2 (27) for driving the rotating bottom plate (210) to rotate is arranged on the mechanism body (21), and an upper cover (11) is arranged at the opening of the mechanism inner cavity 2 (22) of the mechanism body (21); The separation mechanism (3) comprises a mounting plate (31), the mounting plate (31) is fixedly connected to the connecting plate (111), a main shaft (32) is fixedly connected to the lower end surface of the mounting plate (31), a supporting plate (33) is fixedly connected to the lower end of the main shaft (32), a feeding groove (34) is evenly distributed in an annular shape and penetrates the supporting plate (33), and blades (35) are evenly distributed in an annular shape and fixedly connected to the upper end surface of the supporting plate (33).

3. The device for the fine crushing process of lithium cobalt oxide according to claim 2 is characterized in that: A connecting channel (14) is fixedly connected to the upper cover (11), and a transfer channel (15) is connected to the inside of the mechanism inner cavity (12) through the connecting channel (14). The transfer channel (15) is a channel with a square cross section. A mechanism motor (16) is fixedly connected to the outer wall of the transfer channel (15). A mechanism bearing (18) is embedded through the transfer channel (15). A drive shaft (17) is coaxially fixedly connected to the driving end of the mechanism motor (16). The outer ring of the mechanism bearing (18) is fixedly connected to the transfer channel (15). The drive shaft (17) is coaxially sleeved and fixedly connected to the inner ring of the mechanism bearing (18). The transmission shaft (110) and the drive shaft (17) are coaxially fixedly connected.

4. The device for the fine crushing process of lithium cobalt oxide according to claim 2 is characterized in that: A connecting strap (13) is fixedly connected to the opening of the mechanism inner cavity (12) of the upper cover (11), a mounting frame (19) is fixedly connected to the inner wall of the mechanism inner cavity (12), a stabilizing bearing is embedded through the mounting frame (19), the outer ring of the stabilizing bearing is fixedly connected to the mounting frame (19), and a transmission shaft (110) is sleeved through and fixedly connected to the inner ring of the stabilizing bearing.

5. The device for the fine crushing process of lithium cobalt oxide according to claim 2, characterized in that: A second connecting strap (24) is fixedly connected to the opening of the second inner cavity (22) of the mechanism main body (21), the first connecting strap (13) is fixedly installed on the second connecting strap (24), the second mechanism motor (27) is fixedly connected to the mechanism main body (21), the driving end of the mechanism main body (21) is fixedly connected to the second driving shaft (29), the mechanism main body (21) is penetrated and embedded with a connecting bearing, the outer ring of the connecting bearing is fixedly connected to the mechanism main body (21), and the second driving shaft (29) is coaxially sleeved and fixedly connected to the inner ring of the connecting bearing.

6. The device for the fine crushing process of lithium cobalt oxide according to claim 5, characterized in that: The second driving shaft (29) is coaxially fixedly connected to the rotating base plate (210), the ring-shaped rack (212) is fixedly connected to the inner wall of the second mechanism inner cavity (22), the second mounting frame (25) is fixedly connected to the inner wall of the second mechanism inner cavity (22), and the guide ring (26) is fixedly connected to the second mounting frame (25).

7. The device for the fine crushing process of lithium cobalt oxide according to claim 2, characterized in that: A feed pipe (23) is fixedly connected to the side end of the mechanism body (21), and the feed pipe (23) is communicated with the second inner cavity (22) of the mechanism.

8. The device for the fine crushing process of lithium cobalt oxide according to claim 2, characterized in that: A flange ring (28) is fixedly connected to the bottom surface of the second inner cavity (22) of the mechanism, and a rotating bottom plate (210) is movably arranged on the flange ring (28).

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