Horizontal mixed kiln

Abstract

The utility model discloses a horizontal mixed kiln which comprises a heating device and a cooling device which are horizontally arranged and sequentially communicated from top to bottom, the heating device and the cooling device are both provided with supports, the supports are arranged in an up-down laminated mode, the heating device and the cooling device are both provided with rotating tanks capable of moving on the supports, and one end of each rotating tank is provided with a feeding assembly and an air inlet pipe. A discharging assembly and an exhaust pipe are arranged at the other end of the rotating tank. A production line of a traditional sintering technology kiln is replaced by the structure that the horizontal mixing kiln is placed from top to bottom, the occupied area is greatly reduced, heat dissipation of the working environment is facilitated, energy consumption and loss are lower, the machining time is shortened, and the working efficiency is improved; the rotary tank replaces the labor cost of a traditional sagger, and the production cost is lower; nitrogen is filled through the gas inlet pipe, and oxygen in the rotating tank is discharged through the exhaust pipe, so that an oxygen-free environment is achieved in the rotating tank, the lithium battery powder raw material is prevented from being oxidized in the heating process, and the quality of the lithium battery powder is better.

Description

TECHNICAL FIELD

[0001] The utility model relates to lithium battery powder processing equipment technical field, concretely relates to a horizontal mixing kiln. BACKGROUND

[0002] Lithium battery powder needs to be impurity-removed to obtain higher-purity lithium battery powder to improve the power storage capacity of lithium battery, at present, lithium battery powder mostly evaporates impurities by kiln heating and exhaust gas, for example, the Chinese utility model patent with the application number 202110681868.2 discloses a gas heating roller kiln for producing lithium battery material, which comprises a kiln body (1), a protective gas replacement chamber (2), a mechanical transmission device and an automatic control device, characterized in that: the kiln body (1) is divided into a heating section, a heat preservation section, a slow cooling section and a cooling section, a gas heating system is arranged in the heating section and the heat preservation section of the kiln body (1), an own preheating ejection type radiant tube burner is used as a combustion device, the burner adopts upper and lower row staggered and multi-point symmetrical uniform distribution, is controlled by multi-zone pulse time sequence, an exhaust smoke extraction pipeline (8) and an exhaust extraction pipeline (9) are arranged on the kiln top, and one stirring fan (22) is arranged on each kiln top, the roller bar (3) is sealed by a sealing box, and the leakage sealing box parts on both sides are sealed by flanges; a water cooling device (10) and an air cooling pipeline (25) are arranged in the slow cooling section and the cooling section of the kiln body (1), the protective gas replacement chamber (2) is arranged at the inlet and outlet of the kiln, and the furnace and the transmission sealing cover are fed by the protective gas pipeline (7) arranged below the kiln body (1), the upper protective gas branch pipe (27) and the bottom protective gas branch pipe (26). This kiln puts lithium battery powder raw materials into a sagger to seal, then passes through the whole kiln production line to finally obtain lithium battery powder, which has the following shortcomings: 1, the kiln production line is long, so that the floor area is large, the processing time is long, and the energy consumption is large; 2, the lithium battery powder raw materials are heated in the closed sagger, so that the heating is uneven, the impurities and exhaust gas are not completely removed in the heating process, the processed lithium battery powder contains many impurities, the purity of the lithium battery powder is not high enough, and the power storage quality of the lithium battery powder is poor; 3, the sagger is heated for a long time, so that the service life of the sagger is limited, and the sagger needs to be replaced in about three months, which increases the production cost; 4, the processing environment of the lithium battery powder raw materials has oxygen, which is oxidized and blackened in the heating process, reducing the quality of the lithium battery powder. SUMMARY

[0003] In view of the deficiencies in the background art, the technical problem to be solved by the utility model is to provide a horizontal mixing kiln with smaller floor area, lower energy consumption, higher production capacity and lower production cost.

[0004] To this end, the utility model adopts the following technical solutions:

[0005] The application discloses a horizontal mixing kiln, characterized by comprising heating devices and cooling devices arranged in sequence from top to bottom and communicated with each other in a horizontal mode, wherein the heating devices and the cooling devices are both provided with supports which are arranged in a stacked mode, and the heating devices and the cooling devices are both provided with rotary pots which can move on the supports, one end of the rotary pots is provided with feeding assemblies and air inlet pipes, and the other end of the rotary pots is provided with discharging assemblies and air outlet pipes.

[0006] Further, the heating devices are provided with at least one group, and the heating devices comprise medium-frequency induction heating structures which comprise hollow copper pipes surrounding the rotary pots, cooling liquids in the hollow copper pipes and power supplies connected with the hollow copper pipes.

[0007] Further, the cooling devices comprise water cooling box bodies which wrap the rotary pots, the water cooling box bodies are provided with water inlets at upper ends, water collecting basins at lower ends and water outlets, the water inlets and the water outlets are connected with water coolers, the water inlets are provided with transverse water pipes in the water cooling box bodies, the transverse water pipes are provided with a plurality of spray heads which are directed to the rotary pots, the water cooling box bodies are provided with cold air inlet pipes at left sides of the upper ends and hot air outlet pipes at right sides of the upper ends.

[0008] Further, the rotary pots are provided with feeding inclined cones at one side and discharging inclined cones at the other side, the feeding inclined cones are connected with the feeding assemblies, the discharging inclined cones are connected with the discharging assemblies, the feeding assemblies comprise feeding rings and feeding flanges which are fixedly connected, the discharging assemblies comprise discharging rings and discharging flanges which are fixedly connected, the feeding flanges and the discharging flanges are fixedly connected with the supports, the feeding rings are provided with feeding pipes which are communicated with hoppers, and the discharging rings are provided with discharging hoppers.

[0009] Further, a plurality of inclined cone chain wheels are sleeved on the feeding inclined cones, a driving motor is arranged on the support, a motor chain wheel which is aligned with the inclined cone chain wheels is arranged on a rotating shaft of the driving motor, the motor chain wheel and the inclined cone chain wheels are connected and driven through chains, the feeding inclined cones and the discharging inclined cones are both provided with circular rings, a plurality of supporting wheels which can abut against the circular rings are arranged on the support, thin-wall bearings and a plurality of graphite packing sealing assemblies are arranged between the feeding rings and the feeding inclined cones and between the discharging rings and the discharging inclined cones, the feeding rings and the discharging rings are provided with oil channels which are communicated with the corresponding graphite packing sealing assemblies, the oil channels are provided with oil injection nozzles at entrances, the inner rings of the feeding rings and the discharging rings are provided with a plurality of first grooves, the feeding inclined cones and the discharging inclined cones are provided with a plurality of second grooves which are communicated with the first grooves in a staggered mode, the feeding rings and the discharging rings are provided with air channels which are communicated with the first grooves of the outermost circles, and the air channels are provided with air injection nozzles at entrances.

[0010] Further, the heating device number is two groups, respectively, the first group of heating devices and the second group of heating devices, the first group of heating devices is placed on the second group of heating devices, the second group of heating devices is placed on the third group of cooling devices, the feed pipe is inclined upward, the discharge hopper is inclined downward, the discharge hopper of the first group of heating devices is communicated with the feed pipe of the second group of heating devices through the connecting pipe, the discharge hopper of the second group of heating devices is communicated with the feed pipe of the third group of cooling devices through the connecting pipe.

[0011] Further, the rotating tank is provided with a mixing structure, the mixing structure comprises first and second spiral blades with opposite spiral directions, the outer circle of the first spiral blade is welded and fixed to the inner wall of the rotating tank, the outer diameter of the second spiral blade is smaller than the inner diameter of the first spiral blade, and the outer circle of the second spiral blade and the inner circle of the first spiral blade are connected by a plurality of connecting rods, the discharge inclined cone has a discharge port, the inner wall of the discharge inclined cone is provided with a plurality of guide pieces, the guide pieces extend from the right end of the discharge inclined cone to the position of the discharge port, the guide pieces are arc-shaped as a whole, and the included angle between the guide pieces and the inner wall of the discharge inclined cone is an acute angle, the guide pieces and the discharge inclined cone form a feeding groove, the inner wall of the discharge flange is provided with a transition ring, the middle of the transition ring is raised inward to form an angle, one side of the transition ring smoothly transitions with the inner wall of the discharge inclined cone, and the other side smoothly transitions with the inner wall of the discharge hopper, the discharge hopper is provided with an isolation frame, the outer side end of the isolation frame is provided with a gas cylinder, the driving rod of the gas cylinder is inserted into the discharge hopper, and the other end of the driving rod is provided with a discharge tongue which can abut on the transition ring.

[0012] Further, the air inlet pipe is communicated with the feed pipe, the exhaust pipe is communicated with the discharge ring, the temperature sensor is inserted into the feed inclined cone, the differential pressure sensor is inserted into the feed pipe, the oxygen-containing sensor is inserted into the exhaust pipe, the water blocking rings are arranged at the left and right ends of the water cooling box body, the high-temperature-resistant sealing gaskets are arranged between the water blocking rings and the water cooling box body and abut on the feed inclined cone and the discharge inclined cone, and the rotating tank outer circle of the heating device is provided with a layer of heat insulation material.

[0013] After the technical scheme is applied, the heating device heats the lithium battery powder raw material, evaporates impurity moisture after sintering in the lithium battery powder raw material and discharges waste gas through the exhaust pipe, then after the two groups of sintering processes, the discharge assembly discharges the lithium battery powder after impurity removal to the cooling device, the cooling device cools the lithium battery powder and discharges the lithium battery powder through the discharge assembly, and the lithium battery powder product is obtained. The self-top-to-bottom placed horizontal mixing kiln structure replaces the production line of the traditional sintering technology kiln, the occupied area is greatly reduced, the heat dissipation of the working environment is facilitated, energy consumption and loss are lower, processing time is shortened, and working efficiency is improved. The lithium battery powder raw material is mixed in the rotating tank, the lithium battery powder raw material is sintered more uniformly, impurities in all materials are sintered and evaporated and waste gas is discharged in the dynamic mixing process, the lithium battery powder after processing contains less impurities and has higher purity, and then the lithium battery powder has better power storage quality. Meanwhile, the rotating tank replaces the traditional technology kiln's sagger, and the production cost is lower. In addition, nitrogen is filled into the rotating tank through the air inlet pipe, oxygen in the rotating tank is discharged through the exhaust pipe, the oxygen-free environment in the rotating tank is achieved, the lithium battery powder raw material is prevented from being oxidized in the heating process, and the lithium battery powder has better quality. BRIEF DESCRIPTION OF DRAWINGS

[0014] The utility model discloses a following accompanying drawings:

[0015] Figure 1 It is the structure schematic diagram of the utility model;

[0016] Figure 2 It is the internal structure schematic diagram of heating device in the utility model;

[0017] Figure 3 It is the right view structure schematic diagram of heating device in the utility model;

[0018] Figure 4 It is the internal structure schematic diagram of cooling device in the utility model;

[0019] Figure 5 It is Figure 1 The enlarged view of A in the utility model;

[0020] Figure 6 It is the internal structure schematic diagram of graphite root packing sealing assembly, oil way and the structure in the utility model.

[0021] 1, cooling device; 2, support; 3, rotating tank; 4, exhaust pipe; 5, air inlet pipe; 6, medium frequency induction heating structure; 7, hollow copper pipe; 8, cooling liquid; 9, water cooling box; 10, water inlet pipe; 11, water collecting cup; 12, water outlet pipe; 13, transverse water pipe; 14, spray head; 16, cold air inlet pipe; 17, hot air outlet pipe; 18, feeding inclined cone; 19, discharging inclined cone; 20, feeding ring; 21, feeding flange; 22, discharging ring; 23, discharging flange; 24, feeding pipe; 25, discharging hopper; 26, inclined cone sprocket; 27, driving motor; 28, motor sprocket; 30, circular ring; 31, supporting wheel; 32, thin wall bearing; 33, graphite packing seal assembly; 34, first group of heating devices; 35, second group of heating devices; 37, first spiral blade; 38, second spiral blade; 39, connecting rod; 40, guide vane; 41, temperature sensor; 42, oxygen-containing sensor; 43, differential pressure sensor; 44, water baffle ring; 45, high temperature resistant sealing gasket; 46, heat insulation material layer; 47, oil channel; 48, oil injection nozzle; 49, hopper; 50, connecting pipe; 51, discharge port; 52, feeding groove; 53, transition ring; 54, isolation frame; 55, air cylinder; 56, driving rod; 57, discharge tongue; 58, first groove; 59, second groove; 60, air channel; 61, air injection nozzle. DETAILED DESCRIPTION

[0022] In order to further illustrate the technical means and effects adopted by the utility model to achieve the predetermined utility model purposes, the specific embodiments, structures, features and effects according to the utility model are described in detail as follows in combination with the drawings and preferred embodiments.

[0023] With reference to the above shown in the drawings, the utility model provides a kind of horizontal mixing kiln, including from top to bottom in turn intercommunication heating device and cooling device 1 of horizontally arranged, heating device and cooling device 1 are equipped with support 2, support 2 is arranged in upper and lower laminated, heating device and cooling device 1 all have the rotating tank 3 that can be active on support 2, the rotating tank 3 is equipped with mixing structure inside, and the rotating tank 3 one end is equipped with feeding assembly, air inlet pipe 5, the rotating tank 3 other end is equipped with discharge assembly, exhaust pipe 4, the heating device is at least set one group, and heating device includes intermediate frequency induction heating structure 6, and intermediate frequency induction heating structure 6 includes hollow copper pipe 7 around the outer ring of rotating tank 3, cooling liquid 8 in hollow copper pipe 7, and power supply connected with hollow copper pipe 7, and intermediate frequency induction heating structure 6 is heated more evenly to rotating tank 3, and intermediate frequency induction heating structure 6 has the following advantages: heating temperature is high, and it is non-contact heating, and heating efficiency is high, and energy-saving operation occupies less land, and production efficiency is high, and the cooling device 1 includes the water cooling box 9 of wrapping rotating tank 3 outside, and water cooling box 9 upper end is equipped with water inlet pipe 10, lower end is equipped with water-collecting basin 11, water outlet pipe 12, and water inlet pipe 10 and water outlet pipe 12 are connected with cold water machine, and water inlet pipe 10 lower end is equipped with the transverse water pipe 13 in water cooling box 9, and the transverse water pipe 13 is equipped with several spray heads 14 towards rotating tank 3;Make the high temperature lithium battery powder in the rotating tank 3 can be cooled faster, improve production efficiency;The water cooling box 9 upper end left side is equipped with cold air inlet pipe 16, and right side is equipped with hot air outlet pipe 17, and can further accelerate the cooling of high temperature lithium battery powder in rotating tank 3, and the rotating tank 3 one side has feeding inclined cone 18, and other side has discharge inclined cone 19, and feeding inclined cone 18 is connected with feeding assembly, and discharge inclined cone 19 is connected with discharge assembly, and feeding assembly includes fixedly connected feeding ring 20 and feeding flange 21, and discharge assembly includes fixedly connected discharge ring 22 and discharge flange 23, and the feeding flange 21 and discharge flange 23 are fixedly connected with support 2, and the feeding ring 20 is equipped with feeding pipe 24, and the discharge ring 22 is equipped with discharge hopper 25, and the feeding inclined cone 18 is equipped with multiple inclined cone sprocket 26, and the support 2 is equipped with driving motor 27, and the rotating shaft of driving motor 27 is equipped with motor sprocket 28 aligned with inclined cone sprocket 26, and motor sprocket 28 and inclined cone sprocket 26 are driven by chain link, and the feeding inclined cone 18 and discharge inclined cone 19 are all equipped with circular ring 30, and the support 2 is equipped with multiple supporting wheel 31 that can be placed on circular ring 30, and the feeding ring 20 and feeding inclined cone 18, and discharge ring 22 and discharge inclined cone 19 are all equipped with thin-wall bearing 32 and multiple graphite packing seal assembly 33, and graphite packing seal assembly 33 is mainly by various reinforcing fibers, metal wire (steel wire, copper wire, nickel wire, carbon fiber, pre-oxidized wire, glass yarn) and so on reinforced graphite line as raw material precision weaving, it is applicable to high temperature and high pressure under dynamic seal, and the feeding ring 20, discharge ring 22 are equipped with oil channel 47 communicated with corresponding graphite packing seal assembly 33, and oil channel 47 inlet has oil injection nozzle 48,The inner ring of the feeding ring 20 and the discharging ring 22 is provided with a plurality of first grooves 58, the feeding bevel 18 and the discharging bevel 19 are provided with a plurality of second grooves 59 which are in staggered communication with the first grooves 58, the feeding ring 20 and the discharging ring 22 are provided with air channels 60 which are in communication with the outermost first grooves 58, the air channel 60 is provided with an air injection nozzle 61 at the inlet, the heating devices are two groups, which are the first group of heating devices 34 and the second group of heating devices 35, the feeding pipe 24 of the first group of heating devices 34 is in communication with the hopper 49, the first group of heating devices 34 is placed on the second group of heating devices 35, the second group of heating devices 35 is placed on the third group of cooling devices 1, the feeding pipe 24 is inclined upward, the discharging hopper 25 is inclined downward, the discharging hopper 25 of the first group of heating devices 34 is in communication with the feeding pipe 24 of the second group of heating devices 35 through the connecting pipe 50, the discharging hopper 25 of the second group of heating devices 35 is in communication with the feeding pipe 24 of the third group of cooling devices 1 through the connecting pipe 50, the mixing structure includes the first spiral blade 37 and the second spiral blade 38 which have opposite spiral directions, the outer ring of the first spiral blade 37 is welded and fixed to the inner wall of the rotating tank 3, the outer diameter of the second spiral blade 38 is smaller than the inner diameter of the first spiral blade 37, and the outer ring of the second spiral blade 38 and the inner ring of the first spiral blade 37 are connected through a plurality of connecting rods 39, the discharging bevel 19 is provided with a discharging port 51, the inner wall of the discharging bevel 19 is provided with a plurality of guide vanes 40 which extend from the right end of the discharging bevel 19 to the position of the discharging port 51, the guide vanes 40 are arc-shaped as a whole, and the included angle between the guide vanes 40 and the inner wall of the discharging bevel 19 is an acute angle, the guide vanes 40 and the discharging bevel 19 form a feeding groove 52, the inner wall of the discharging flange 23 is provided with a transition ring 53, the middle of the transition ring 53 is raised inward to form an angle, one side of the transition ring 53 is smoothly connected with the inner wall of the discharging bevel 19, and the other side is smoothly connected with the inner wall of the discharging hopper 25, the discharging hopper 25 is provided with an isolation frame 54, the outer side end of the isolation frame 54 is provided with an air cylinder 55, the driving rod 56 of the air cylinder 55 is inserted into the discharging hopper 25, and the other end of the driving rod 56 is provided with a discharging tongue 57 which can abut on the transition ring 53, the guide vanes 40 of this structure are convenient for the lithium battery powder to be transported to the discharging hopper 25, when the rotating tank 3 rotates forward, the first spiral blade 37 transports the lithium battery powder to the feeding bevel 18, and the second spiral blade 38 transports the lithium battery powder to the discharging bevel 19, so that the lithium battery powder in the rotating tank 3 is mixed more uniformly, when the rotating tank 3 rotates reversely, the first spiral blade 37 transports the lithium battery powder to the discharging bevel 19, and then the lithium battery powder is transported to the corresponding discharging hopper 25 by the guide vanes 40, the air inlet pipe 5 is in communication with the feeding pipe 24, the air outlet pipe 4 is in communication with the discharging ring 22, the temperature sensor 41 is inserted into the feeding bevel 18 on the feeding ring 20, the differential pressure sensor 43 is inserted into the feeding pipe 24, the oxygen-containing sensor 42 is inserted into the air outlet pipe 4, the water blocking rings 44 are arranged at the left and right ends of the water cooling box 9,The water blocking ring 44 and the water cooling box 9 are provided with high temperature resistant sealing pads 45 abutting against the feed inclined cone 18 and the discharge inclined cone 19, so that the sealing performance of the water cooling box 9 is better. The outer ring of the rotating tank 3 of the heating device is provided with a layer of heat insulation material 46, so that the heat preservation performance of the heating device is better, and the energy loss is reduced.

[0024] In the embodiment, the heating device heats the lithium battery powder raw material, evaporates the impurities and moisture after sintering, and discharges the exhaust gas through the exhaust pipe 4. After the two sintering processes, the discharge assembly discharges the lithium battery powder after removing the impurities into the cooling device 1. The cooling device 1 cools the lithium battery powder and discharges it through the discharge assembly to obtain the lithium battery powder product. This horizontal mixing kiln structure replaces the traditional sintering technology kiln production line, greatly reduces the occupied area, reduces energy consumption and loss, shortens the processing time, and improves the work efficiency. The lithium battery powder raw material in the rotating tank 3 is mixed under the mixing effect of the rotating tank 3. The sintering of the lithium battery powder raw material is more uniform, and the impurities in all materials are sintered and evaporated during the dynamic mixing process, so that the lithium battery powder after processing contains less impurities and has higher purity, and the quality of the lithium battery powder is better. At the same time, the rotating tank 3 replaces the traditional technology kiln's sagger, which reduces the production cost. In addition, nitrogen is filled into the rotating tank 3 through the air inlet pipe 5, and the oxygen in the rotating tank 3 is discharged through the exhaust pipe 4, so that the rotating tank 3 reaches an oxygen-free environment, avoiding the oxidation of the lithium battery powder raw material during heating, and improving the quality of the lithium battery powder. The oil injection nozzle 48 regularly injects lubricating oil into the oil channel 47, and the graphite packing assembly is kept lubricated, thereby improving the service life. The thin-wall bearing 32 is provided between the feeding ring 20 and the feeding inclined cone 18, and between the discharging ring 22 and the discharging inclined cone 19, so that the equipment injects gas into the air channel 60 through the gas injection nozzle 61 during operation. The gas passes through the first groove 58, the second groove 59, the first groove 58, and the second groove 59 in sequence, and finally enters the rotating tank 3 through the gap. The first groove 58 and the second groove 59 are arranged in a staggered and communicated manner to form a labyrinth air seal, which prevents materials from entering the gap during equipment operation, thereby affecting the sealing between the feeding ring 20 and the feeding inclined cone 18, and between the discharging ring 22 and the discharging inclined cone 19. The discharging inclined cone 19 does not perform discharging operation when it rotates in the forward direction, and the material will enter the feeding groove 52 and move to the discharging port 51 position for discharging operation when the discharging inclined cone 19 rotates in the reverse direction. Since the guide vane 40 is arc-shaped as a whole, the feeding groove 52 can accommodate more material, increasing the discharging speed. Moreover, the material will slide to the bottom of the feeding groove 52 (arc-shaped) due to its own weight. With the continuous reverse rotation of the discharging inclined cone 19, the bottom of the feeding groove 52 (arc-shaped) is always changing, so that the material always has a tendency to slide to the discharging port 51, further accelerating the discharging speed. The transition ring 53 in the inner wall of the discharging flange 23 is raised inward in the middle to form an angle. One side of the transition ring 53 smoothly transitions with the inner wall of the discharging inclined cone 19, and the other side smoothly transitions with the inner wall of the discharging hopper 25, effectively preventing material from depositing on the inner wall of the discharging flange 23, avoiding affecting the sealing, and making the discharging more complete. The driving cylinder 55 can move the discharging tongue 57 left and right. When the material is mixed, the discharging tongue 57 moves to the right to make the discharging tongue 57 abut against the transition ring 53 to complete the sealing of the discharging port 51. When discharging, the discharging tongue 57 moves to the left to separate from the transition ring 53. The structure is stable and reliable.The isolation frame 54 is arranged to keep the air cylinder 55 away from the rotary tank 3, so that the air cylinder 55 is prevented from working in a high-temperature environment for a long time, and the service life of the air cylinder 55 is prolonged.

[0025] The utility model discloses the working principle as follows:

[0026] S1, the hollow copper pipe 7 is started to the first group heating device 34 of rotary tank 3 and carries out medium frequency induction heating, and through the air inlet pipe 5, nitrogen is injected into the rotary tank 3, and the oxygen in the rotary tank 3 is discharged through the exhaust pipe 4;

[0027] S2, when the oxygen concentration in the rotary tank 3 is detected by the oxygen sensor 42, the hopper 49 of the first group heating device 34 is opened, the lithium battery powder raw material is entered into the rotary tank 3 through the feeding pipe 24, and the medium frequency induction heating structure 6 is continuously heated to the rotary tank 3, so that the lithium battery powder raw material is continuously heated and the impurities in the lithium battery powder raw material are evaporated;

[0028] S3, the driving motor 27 is started during the heating process of S2, and through the cooperation of the motor sprocket 28, the chain and the bevel gear 26, the feeding bevel 18, the rotary tank 3 and the discharge bevel 19 are driven to rotate forward, and the lithium battery powder raw material is dynamically and uniformly mixed and heated during the rotation process, so that the impurities and moisture in the lithium battery powder raw material are evaporated and the exhaust gas is discharged through the exhaust pipe 4;

[0029] S4, the second group heating device 35 is preheated to the rotary tank 3 through the medium frequency induction heating structure 6, and the rotary tank 3 is simultaneously nitrogen-filled and oxygen-discharged, after the lithium battery powder raw material is heated and sintered by the first group heating device 34, the discharge tongue 57 of the first group heating device 34 is opened by the driving cylinder 55, and the feeding bevel 18, the rotary tank 3 and the discharge bevel 19 are driven to rotate reversely by the driving motor 27 of the first group heating device 34, the lithium battery powder raw material is lifted to the discharge ring 22 by the guide piece 40 and enters the second group heating device 35 through the discharge hopper 25 and the connecting pipe 50, and the feeding pipe 24 and the rotary tank 3 are heated and solidified to remove impurities and exhaust gas, and the obtained lithium battery powder is transported to the cooling device 1 after the heating is finished.

[0030] S5, the driving motor 27 of the cooling device 1 starts to drive the feeding inclined cone 18, the rotating tank 3 and the discharging inclined cone 19 to rotate forwardly, the water inlet pipe 10 sends cold water to the transverse water pipe 13 and sprays the outer surface of the feeding inclined cone 18, the rotating tank 3 and the discharging inclined cone 19 through the spray head 14 to cool the high-temperature lithium battery powder in the rotating tank 3, at the same time, the cold air inlet pipe 16 inputs cold air into the cooling box, and the hot air outlet pipe 17 discharges the hot air in the cooling box outwardly until the lithium battery powder is completely cooled, the driving motor 27 of the cooling device 1 reverses to drive the feeding inclined cone 18, the rotating tank 3 and the discharging inclined cone 19 to rotate reversely, and drives the air cylinder 55 to open the discharging tongue 57 of the cooling device 1, and the cooled lithium battery powder is lifted to the discharging ring 22 by the guide piece 40 and discharged through the discharging hopper 25.

[0031] The heating temperature in S1 is 80-100 degrees; the heating temperature in S2 and S3 is 450-500 degrees, the heating time is 1-3h, and during the heating process, the exhaust gas is discharged at intervals, and at the same time, the positive pressure in the rotating tank 3 is kept greater than 20Pa according to the signal of the pressure difference sensor 43; the preheating temperature in S4 is greater than 450 degrees, the secondary heating and solidification temperature is 800-850 degrees, and the secondary heating and solidification time is 2-3h; the cooling time in S5 is 3h; after the first group of heating devices 34 completely sends the lithium battery powder raw material to the second group of heating devices 35, the discharging tongue 57 of the feeding pipe 24 of the second group of heating devices 35 is closed, the medium-frequency induction heating structure 6 of the first group of heating devices 34 stops working, and then the temperature in the rotating tank 3 is reduced to less than 200 degrees, and then new lithium battery powder raw material is put in, and the above process is repeated until all the lithium battery powder raw material is continuously processed.

[0032] The above is only a preferred embodiment of the present application, and does not limit the present application in any form. Although the preferred embodiment of the present application has been disclosed as above, it is not intended to limit the present application. Any person skilled in the art can make some changes or modifications to the above disclosed technical content without departing from the technical solution of the present application to obtain equivalent embodiments with equivalent changes, but as long as it does not deviate from the technical solution of the present application, any modification, equivalent change and modification of the above embodiment according to the technical essence of the present application are still within the scope of the technical solution of the present application.

Claims

1. A fluidized bed kiln characterized by: The heating device and the cooling device are arranged in sequence from top to bottom, and each of the heating device and the cooling device is provided with a support, and the supports are arranged in a stack from top to bottom, and each of the heating device and the cooling device has a rotating tank which is movable on the support, one end of the rotating tank is provided with a feeding assembly and an air inlet pipe, and the other end of the rotating tank is provided with a discharging assembly and an air outlet pipe.

2. A tilt-up kiln as defined in claim 1, wherein: The heating device is provided with at least one group, and the heating device comprises a medium-frequency induction heating structure, the medium-frequency induction heating structure comprises a hollow copper pipe surrounding an outer ring of the rotating tank, a cooling liquid in the hollow copper pipe, and a power supply connected with the hollow copper pipe.

3. A tilt-up kiln as defined in claim 2, wherein: The cooling device comprises a water cooling box body surrounding the rotating tank, the water cooling box body is provided with a water inlet pipe at an upper end and a water outlet pipe at a lower end, and a water collecting basin is arranged at the lower end, the water inlet pipe and the water outlet pipe are connected with a cold water machine, a transverse water pipe is arranged in the water cooling box body and located below the water inlet pipe, and the transverse water pipe is provided with a plurality of spray heads facing the rotating tank; a cold air inlet pipe is arranged on the left side of the upper end of the water cooling box body in communication, and a hot air outlet pipe is arranged on the right side of the upper end of the water cooling box body in communication.

4. A tilt-up kiln as defined in claim 3, wherein: The rotating tank is provided with a feeding inclined cone on one side and a discharging inclined cone on the other side, the feeding inclined cone is connected with the feeding assembly, the discharging inclined cone is connected with the discharging assembly, the feeding assembly comprises a feeding ring and a feeding flange which are fixedly connected, the discharging assembly comprises a discharging ring and a discharging flange which are fixedly connected, the feeding flange and the discharging flange are fixedly connected with the support, the feeding ring is provided with a feeding pipe, and the discharging ring is provided with a discharging hopper.

5. A tilt-up kiln as defined in claim 4, wherein: A plurality of inclined cone chain wheels are arranged on the feeding inclined cone, a driving motor is arranged on the support, a motor chain wheel is arranged on a rotating shaft of the driving motor and aligned with the inclined cone chain wheels, the motor chain wheel and the inclined cone chain wheels are connected and driven by a chain, the feeding inclined cone and the discharging inclined cone are each provided with a circular ring, a plurality of supporting wheels which can abut against the circular rings are arranged on the support, thin-wall bearings and a plurality of graphite packing seal assemblies are arranged between the feeding ring and the feeding inclined cone and between the discharging ring and the discharging inclined cone, the feeding ring and the discharging ring are provided with oil channels which communicate with the corresponding graphite packing seal assemblies, the oil channels are provided with oil injection nozzles at entrances, a plurality of first grooves are arranged in inner rings of the feeding ring and the discharging ring, a plurality of second grooves which are misaligned with the first grooves are arranged in the feeding inclined cone and the discharging inclined cone, and air channels which communicate with the outermost first grooves are arranged in the feeding ring and the discharging ring, and the air channels are provided with air injection nozzles at entrances.

6. A tilt-up kiln as defined in claim 5, wherein: The number of the heating devices is two, which are a first group of heating devices and a second group of heating devices, the feeding pipe of the first group of heating devices communicates with the hopper, the first group of heating devices is arranged on the second group of heating devices, the second group of heating devices is arranged on the third group of cooling devices, the feeding pipe is arranged in an upward inclined manner, and the discharging hopper is arranged in a downward inclined manner, the discharging hopper of the first group of heating devices communicates with the feeding pipe of the second group of heating devices through a connecting pipe, and the discharging hopper of the second group of heating devices communicates with the feeding pipe of the third group of cooling devices through a connecting pipe.

7. A tilt-up kiln according to claim 4, 5 or 6 wherein: The rotating tank is internally provided with a mixing structure, which comprises first and second spiral blades with opposite spiral directions, the outer circle of the first spiral blade is welded and fixed to the inner wall of the rotating tank, the outer diameter of the second spiral blade is smaller than the inner diameter of the first spiral blade, and the outer circle of the second spiral blade and the inner circle of the first spiral blade are connected through a plurality of connecting rods, the discharge conical taper is provided with a discharge port, the inner wall of the discharge conical taper is provided with a plurality of guide fins, the guide fins extend from the right end of the discharge conical taper to the position of the discharge port, the guide fins are arc-shaped as a whole, and the included angle between the guide fins and the inner wall of the discharge conical taper is an acute angle, the guide fins and the discharge conical taper form a feeding groove, the inner wall of the discharge flange is provided with a transition ring, the middle of the transition ring is raised inward to form an angle, one side of the transition ring is smoothly connected with the inner wall of the discharge conical taper, and the other side is smoothly connected with the inner wall of the discharge hopper, the discharge hopper is provided with an isolation frame, the outer side end of the isolation frame is provided with a gas cylinder, the driving rod of the gas cylinder is inserted into the discharge hopper, and the other end of the driving rod is provided with a discharge tongue which can abut against the transition ring.

8. A tilt-up kiln as claimed in claim 4, 5 or 6, wherein: The air inlet pipe is communicated with the feeding pipe, the air outlet pipe is communicated with the discharge ring, the temperature sensor is arranged in the feeding pipe and inserted into the feeding conical taper, the differential pressure sensor is arranged in the feeding pipe, the oxygen-containing sensor is arranged in the air outlet pipe, the water blocking rings are arranged at the left and right ends of the water cooling box, the high-temperature-resistant sealing gaskets are arranged between the water blocking rings and the water cooling box and abut against the feeding conical taper and the discharge conical taper, and the rotating tank of the heating device is provided with a layer of heat insulation material.

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