Heating device of horizontal mixed kiln

Abstract

The heating device comprises a support, a medium-frequency induction heating structure and a rotating tank horizontally arranged on the support, the medium-frequency induction heating structure comprises a hollow copper pipe surrounding the outer ring of the rotating tank, cooling liquid in the hollow copper pipe and a power source connected with the hollow copper pipe, and the rotating tank can rotate 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 exhaust pipe. The heating device of the horizontal mixed kiln replaces a heating production line of a traditional sintering technology kiln, the occupied area is greatly reduced, 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 sagger of a kiln in the traditional technology, so that the production cost is lower; nitrogen is filled through the air inlet pipe, oxygen in the rotating tank is exhausted through the exhaust pipe, an oxygen-free environment is achieved in the rotating tank, lithium battery powder raw materials are prevented from being oxidized in the heating process, and the quality of lithium battery powder is better.

Description

Technical Field

[0001] The invention relates to the technical field of lithium battery powder processing equipment, and in particular to a heating device for a horizontal mixing kiln. Background Art

[0002] Lithium battery powder needs to be removed before it can be obtained with higher purity to increase the storage capacity of lithium batteries. At present, most lithium battery powder is heated in a kiln to evaporate impurities and discharge exhaust gas. For example, Chinese invention patent application number 202110681868.2 discloses a gas-heated roller kiln for producing lithium battery materials, which includes a kiln body (1), a protective gas replacement chamber (2), a mechanical transmission device and an automatic control device, and is 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), and a self-preheating induced radiation tube burner is used as a combustion The device adopts a staggered upper and lower row, multi-point symmetrical and uniform distribution of burners, and is divided into multiple zones for pulse timing control. A smoke exhaust pipe (8) and a waste exhaust pipe (9) are arranged on the kiln top, and a stirring fan (22) is arranged on each kiln top. The roller (3) is sealed with a sealing box, and the parts leaking out of the sealing box on both sides are sealed with flanges. A water cooling device (10) and an air cooling pipe (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 both ends of the inlet and outlet of the kiln, and is sent into the furnace and the transmission sealing cover through the protective gas pipe (7) and the bottom protective gas branch pipe (26) and the upper protective gas branch pipe (27) arranged below the kiln body (1). This type of kiln places lithium battery powder raw materials into a sealed sagger for heating, and then passes through the entire kiln production line to finally obtain lithium battery powder. It has the following disadvantages: 1. The kiln heating production line is long, which occupies a large area, takes a long processing time, and consumes a lot of energy; 2. The lithium battery powder raw materials are heated in a closed sagger, resulting in uneven heating, impurities and exhaust gas are not completely removed during the heating process, the processed lithium battery powder contains many impurities, and the purity of the lithium battery powder is not high enough, resulting in poor power storage quality of the lithium battery powder; 3. The sagger is heated at high temperature for a long time, and its service life is limited. Generally, the sagger needs to be replaced in about three months, which increases production costs; 4. The processing environment of the lithium battery powder raw materials has oxygen, and it will be oxidized and blackened during the heating process, which reduces the quality of the lithium battery powder. Summary of the invention

[0003] In view of the shortcomings of the background technology, the technical problem to be solved by the present invention is to provide a heating device for a horizontal mixing kiln with a smaller footprint, lower energy consumption, higher production capacity and lower production cost.

[0004] To this end, the present invention is implemented by adopting the following technical solutions:

[0005] A heating device for a horizontal mixing kiln is characterized in that it comprises a support, a medium frequency induction heating structure and a rotating tank horizontally arranged on the support, the medium frequency induction heating structure comprises a hollow copper tube surrounding the outer circle of the rotating tank, a coolant in the hollow copper tube, and a power supply connected to the hollow copper tube, the rotating tank can rotate on the support, and a feeding assembly and an air inlet pipe are arranged at one end of the rotating tank, and a discharging assembly and an exhaust pipe are arranged at the other end of the rotating tank.

[0006] Furthermore, the rotating tank has a feed oblique cone on one side and a discharge oblique cone on the other side, the feed oblique cone is connected to the feed component, and the discharge oblique cone is connected to the discharge component, the feed component includes a fixedly connected feed ring and a feed flange, the discharge component includes a fixedly connected discharge ring and a discharge flange, the feed flange and the discharge flange are fixedly connected to the support, the feed ring is provided with a feed pipe, the feed pipe is connected to the hopper, and the discharge ring is provided with a discharge hopper.

[0007] Furthermore, a plurality of inclined cone sprockets are provided on the feed inclined cone, a driving motor is provided on the support, a motor sprocket aligned with the inclined cone sprocket is provided on the rotating shaft of the driving motor, the motor sprocket and the inclined cone sprocket are linked and driven by a chain, the feed inclined cone and the discharge inclined cone are both provided with circular rings, and a plurality of supporting wheels that can rest on the circular rings are provided on the support.

[0008] Furthermore, a mixing structure is provided in the rotating tank, which includes a first spiral blade and a second spiral blade with opposite spiral directions. The outer ring 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 ring of the second spiral blade and the inner ring of the first spiral blade are connected by a plurality of connecting rods.

[0009] Furthermore, the discharging inclined cone has a discharging port, and the inner wall of the discharging inclined cone is provided with a plurality of guide pieces, which extend from the right end of the discharging inclined cone to the discharging port. The guide pieces are arc-shaped as a whole, and the angle between the guide pieces and the inner wall of the discharging inclined cone is an acute angle. The guide pieces and the discharging inclined cone form a feeding trough, and the inner wall of the discharging flange is provided with a transition ring, and the middle of the transition ring bulges toward the inner circle to form an angle, one side of the transition ring smoothly transitions to the inner wall of the discharging inclined cone, and the other side smoothly transitions to the inner wall of the discharging hopper. The discharging hopper has an isolation frame, and the outer end of the isolation frame is provided with a cylinder, and the driving rod of the cylinder is inserted into the discharging hopper, and the other end of the driving rod is provided with a discharging tongue that can rest on the transition ring.

[0010] Furthermore, the feed ring is provided with a temperature sensor inserted into the feed oblique cone, the feed pipe is provided with a pressure difference sensor, the exhaust pipe is provided with an oxygen sensor, and the outer ring of the rotating tank is provided with a heat insulation material layer.

[0011] Furthermore, thin-walled bearings and multiple graphite packing sealing assemblies are provided between the feed ring and the feed inclined cone, and between the discharge ring and the discharge inclined cone. The feed ring and the discharge ring are provided with oil passages communicating with the corresponding graphite packing sealing assemblies, and the oil passage entrances have oil injection nozzles.

[0012] Furthermore, the inner circles of the feed ring and the discharge ring are provided with multiple circles of first grooves, the feed inclined cone and the discharge inclined cone are provided with multiple circles of second grooves that are staggered and connected to the first grooves, the feed ring and the discharge ring are provided with air ducts that are connected to the outermost circle of the first grooves, and the air duct entrances have air injection nozzles.

[0013] After adopting the above technical scheme, the medium frequency induction heating structure of the heating device is used to heat the lithium battery powder raw material, and the impurity water after sintering is evaporated and the exhaust gas is discharged through the exhaust pipe, and then discharged to the next process through the discharge hopper. The heating device of this horizontal mixing kiln replaces the heating production line of the traditional sintering technology kiln, which greatly reduces the floor space, and the energy consumption and loss are also lower, shortening the processing time and improving the work efficiency; the lithium battery powder raw material is mixed in the rotating tank with the rotating tank, which not only makes the lithium battery powder raw material sintered more evenly, but also makes the impurities in all materials sintered and evaporated and the exhaust gas discharged in the dynamic mixing process, so that the processed lithium battery powder contains less impurities and has higher purity, thereby making the lithium battery powder better in terms of power storage quality; at the same time, the rotating tank replaces the cost of the sagger of the traditional technology kiln, making the production cost lower; in addition, nitrogen is filled into the rotating tank through the air inlet pipe, and the oxygen in the rotating tank is discharged through the exhaust pipe, so that the rotating tank reaches an oxygen-free environment, avoiding the oxidation of the lithium battery powder raw material during the heating process, and making the lithium battery powder better in quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The present invention has the following accompanying drawings:

[0015] Figure 1 It is a schematic diagram of the internal structure of the present invention;

[0016] Figure 2 It is a right view structural schematic diagram of the present invention;

[0017] Figure 3 It is a schematic diagram of the internal structure of the first groove, the second groove, the airway and other structures in the present invention;

[0018] Figure 4 It is a schematic diagram of the internal structure of the graphite packing sealing component, oil channel and other structures in the present invention.

[0019] Figure numerals: 2, support; 3, rotating tank; 4, exhaust pipe; 5, intake pipe; 6, medium frequency induction heating structure; 7, hollow copper tube; 8, coolant; 18, feed oblique cone; 19, discharge oblique cone; 20, feed ring; 21, feed flange; 22, discharge ring; 23, discharge flange; 24, feed pipe; 25, discharge hopper; 26, oblique cone sprocket; 27, drive motor; 28, motor sprocket; 30, ring; 31, support wheel; 32, thin-walled bearing; 33, graphite packing seal assembly Parts; 37, first spiral blade; 38, second spiral blade; 39, connecting rod; 40, guide plate; 41, temperature sensor; 42, oxygen sensor; 43, differential pressure sensor; 46, thermal insulation material layer; 47, oil channel; 48, oil injection nozzle; 49, hopper; 51, discharge port; 52, feed trough; 53, transition ring; 54, isolation frame; 55, cylinder; 56, drive rod; 57, discharge tongue; 58, first groove; 59, second groove; 60, air channel; 61, air injection nozzle. DETAILED DESCRIPTION

[0020] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the specific implementation mode, structure, characteristics and effects of the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.

[0021] Referring to the above-mentioned drawings, a heating device for a horizontal mixing kiln provided by the present invention comprises a support 2, a medium frequency induction heating structure 6 and a rotating tank 3 horizontally arranged on the support 2, wherein the medium frequency induction heating structure 6 comprises a hollow copper tube 7 surrounding the outer ring of the rotating tank 3, a coolant 8 in the hollow copper tube 7, and a power supply connected to the hollow copper tube 7, and the medium frequency induction heating structure 6 heats the rotating tank 3 more uniformly, and the medium frequency induction heating structure 6 has the following advantages: high heating temperature, non-contact heating, high heating efficiency, energy-saving operation, small footprint, and high production efficiency, the rotating tank 3 can rotate on the support 2, a mixing structure is arranged in the rotating tank 3, and a feeding assembly and an air inlet pipe 5 are arranged at one end of the rotating tank 3, and an outlet is arranged at the other end of the rotating tank 3. The rotating tank 3 has a feed oblique cone 18 on one side and a discharge oblique cone 19 on the other side. The feed oblique cone 18 is connected to the feed component, and the discharge oblique cone 19 is connected to the discharge component. The feed component includes a fixedly connected feed ring 20 and a feed flange 21. The discharge component includes a fixedly connected discharge ring 22 and a discharge flange 23. The feed flange 21 and the discharge flange 23 are fixedly connected to the support 2. The feed ring 20 is provided with a feed pipe 24, and the feed pipe 24 is connected to the hopper 49. The discharge ring 22 is provided with a discharge hopper 25. The feed oblique cone 18 is sleeved with a plurality of oblique cone sprockets 26. The support 2 is provided with a drive motor 27, and the rotating shaft of the drive motor 27 is provided with an electric motor aligned with the oblique cone sprocket 26. The machine sprocket 28, the motor sprocket 28 and the inclined cone sprocket 26 are linked by a chain transmission, the feed inclined cone 18 and the discharge inclined cone 19 are both provided with a ring 30, the support 2 is provided with a plurality of supporting wheels 31 that can be against the ring 30, the mixing structure includes a first spiral blade 37 and a second spiral blade 38 with 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 by a plurality of connecting rods 39, the discharge inclined cone 19 has a discharge port 51, and the inner wall of the discharge inclined cone 19 is provided with a plurality of guide plates 40, and the guide plates 40 extend from the right end of the discharge inclined cone 19 to the inner wall of the discharge inclined cone 19. Extending to the position of the discharge port 51, the guide piece 40 is overall arc-shaped, and the angle between the guide piece 40 and the inner wall of the discharge oblique cone 19 is an acute angle. The guide piece 40 and the discharge oblique cone 19 form a feeding trough 52. The inner wall of the discharge flange 23 is provided with a transition ring 53. The middle of the transition ring 53 bulges toward the inner circle to form a folded angle. One side of the transition ring 53 smoothly transitions to the inner wall of the discharge oblique cone 19, and the other side smoothly transitions to the inner wall of the discharge hopper 25. The discharge hopper 25 has an isolation frame 54, and the outer end of the isolation frame 54 is provided with a cylinder 55. The drive rod 56 of the cylinder 55 is inserted into the discharge hopper 25, and the other end of the drive rod 56 is provided with a discharge tongue 57 that can be against the transition ring 53. The guide piece 40 with this structure is convenient for conveying lithium battery powder to the discharge hopper 25.When the rotating tank 3 rotates forward, the first spiral blade 37 conveys the lithium battery powder raw material to the direction of the feed inclined cone 18, and the second spiral blade 38 conveys the lithium battery powder raw material to the direction of the discharge inclined cone 19, so that the lithium battery powder raw material in the rotating tank 3 is mixed more evenly. When the rotating tank 3 rotates backward, the first spiral blade 37 conveys the lithium battery powder raw material to the direction of the discharge inclined cone 19, and then is conveyed to the discharge hopper 25 by the guide plate 40. The feed ring 20 is provided with a temperature sensor 41 inserted into the feed inclined cone 18. The temperature sensor 41 is used to detect the temperature in the rotating tank 3 so as to control the heating temperature. The feed pipe 24 is inserted with a pressure difference sensor 43, and the pressure in the rotating tank 3 is controlled according to the signal of the pressure difference sensor 43. The outer ring of the rotating tank 3 is provided with a heat insulation material layer 46, so that the thermal insulation performance of the heating device is better and energy loss is reduced. The exhaust pipe 4 is inserted with an oxygen sensor 4 2. A thin-walled bearing 32 and a plurality of graphite packing seal assemblies 33 are arranged between the feed ring 20 and the feed inclined cone 18, and between the discharge ring 22 and the discharge inclined cone 19. The graphite packing seal assemblies 33 are mainly made of various reinforced fibers, metal wires (steel wire, copper wire, nickel wire, carbon fiber, pre-oxidized wire, glass yarn) and other reinforced graphite wires as raw materials, and are suitable for dynamic sealing under high temperature and high pressure conditions. The feed ring 20 and the discharge ring 22 are provided with The oil passage 47 communicates with the corresponding graphite packing seal assembly 33, and the entrance of the oil passage 47 has an oil injection nozzle 48. The inner rings of the feed ring 20 and the discharge ring 22 are both provided with multiple circles of first grooves 58, and the feed oblique cone 18 and the discharge oblique cone 19 are both provided with multiple circles of second grooves 59 staggered and communicated with the first grooves 58. The feed ring 20 and the discharge ring 22 are provided with an air passage 60 communicated with the outermost first groove 58, and the entrance of the air passage 60 has an air injection nozzle 61.

[0022] The working principle of the present invention is as follows:

[0023] The power supply is started to make the hollow copper tube 7 perform medium frequency induction heating on the rotating tank 3, and nitrogen is injected 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; when the oxygen concentration in the rotating tank 3 is detected to be 0 by the oxygen sensor 42, the valve of the feed pipe 24 is opened, so that the lithium battery powder raw material in the hopper 49 enters the rotating tank 3 through the feed pipe 24. In this process, the medium frequency induction heating structure 6 continuously heats the rotating tank 3, so that the lithium battery powder raw material is continuously heated and the impurities therein are evaporated; during the heating process, the driving motor 27 is started, and the electric The cooperation of the machine sprocket 28, the chain and the inclined cone sprocket 26 drives the feed inclined cone 18, the rotating tank 3 and the discharge inclined cone 19 to rotate forwardly. During the rotation, the lithium battery powder raw material is dynamically and evenly mixed and heated, so that the impurities and moisture in the lithium battery powder raw material during high-temperature sintering are evaporated and the exhaust gas is discharged through the exhaust 6; after the heating and sintering of the lithium battery powder raw material is completed, the driving motor 27 is reversed to drive the feed inclined cone 18, the rotating tank 3 and the discharge inclined cone 19 to rotate in the opposite direction, and the lithium battery powder raw material is lifted by the guide sheet 40 to the discharge ring 22 and discharged to the next process through the discharge hopper 25.

[0024] In this embodiment, the medium frequency induction heating structure 6 of the heating device is used to heat the lithium battery powder raw material, and the impurity water after sintering is evaporated and the exhaust gas is discharged through the exhaust pipe 4, and then discharged to the next process through the discharge hopper 25. The heating device of this horizontal mixing kiln replaces the heating production line of the traditional sintering technology kiln, which greatly reduces the footprint, reduces energy consumption and loss, shortens the processing time, and improves work efficiency; the lithium battery powder raw material is mixed with the rotating tank 3 in the rotating tank 3, which not only makes the lithium battery powder raw material sintered more evenly, but also makes the impurities in all materials sintered and evaporated and the exhaust gas discharged in the dynamic mixing process, so that the processed lithium battery powder contains less impurities and has higher purity, thereby making the lithium battery powder a good storage product. The quality is better; at the same time, the rotating tank 3 replaces the cost of the sagger of the traditional technical kiln, making the production cost lower; 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 removed 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 the heating process, and making the lithium battery powder of better quality; lubricating oil is regularly injected into the oil channel 47 through the oil injection nozzle 48, so that the graphite packing assembly is kept lubricated and the service life is increased; the arrangement of the thin-walled bearing 32 allows a certain gap between the feed ring 20 and the feed oblique cone 18, and between the discharge ring 22 and the discharge oblique cone 19, so when the equipment is working, gas is injected into the air channel 60 through the gas injection nozzle 61, and the gas passes through the first groove 58, the first groove 59 and the second groove 60 one by one. The first groove 59, the second groove 59, the first groove 58, and the second groove 59 finally enter the rotating tank 3 through the gap. The multiple first grooves 58 and the second grooves 59 arranged in a staggered manner form a labyrinth air seal to prevent the material from entering the gap when the equipment is working, thereby affecting the sealing between the feed ring 20 and the feed inclined cone 18, and between the discharge ring 22 and the discharge inclined cone 19; when the discharge inclined cone 19 rotates forward, no discharge operation is performed. When the discharge inclined cone 19 rotates reversely, the material will enter the feed trough 52 and move to the discharge port 51 for discharge operation. Since the guide piece 40 is in an arc shape as a whole, the feed trough 52 can be loaded with more material, increasing the discharge speed, and the material will slide to the bottom of the feed trough 52 (arc-shaped) due to its own weight, along with the discharge inclined cone 19 Continuously reverse, the bottom of the relative feeding trough 52 (arc-shaped) is constantly changing, so that the material has a tendency to slide toward the discharge port 51, further accelerating the discharge speed; the middle of the transition ring 53 on the inner wall of the discharge flange 23 bulges inward to form a folded angle, one side of the transition ring 53 smoothly transitions with the inner wall of the discharge oblique cone 19, and the other side smoothly transitions with the inner wall of the discharge hopper 25, effectively preventing the material from being deposited on the inner wall of the discharge flange 23, avoiding affecting the sealing, and making the discharge more thorough; the driving cylinder 55 can drive the discharge tongue 57 to move left and right. When the materials are mixed, the discharge tongue 57 moves to the right so that the discharge tongue 57 rests on the transition ring 53 to complete the sealing of the discharge port 51. When discharging, the discharge tongue 57 moves to the left to separate from the transition ring 53, and the structure is stable and reliable;The setting of the isolation frame 54 keeps the cylinder 55 away from the rotating tank 3, so as to prevent the cylinder 55 from operating in a high temperature environment for a long time, thereby increasing its service life. ;

[0025] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A heating device for a horizontal mixing kiln, characterized in that: It includes a support, a medium-frequency induction heating structure and a rotating tank horizontally arranged on the support. The medium-frequency induction heating structure includes a hollow copper tube surrounding the outer circle of the rotating tank, a coolant in the hollow copper tube, and a power supply connected to the hollow copper tube. The rotating tank can rotate on the support, and 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 exhaust pipe.

2. The heating device for a horizontal mixing kiln according to claim 1, characterized in that: The rotating tank has a feed oblique cone on one side and a discharge oblique cone on the other side. The feed oblique cone is connected to the feed component, and the discharge oblique cone is connected to the discharge component. The feed component includes a fixedly connected feed ring and a feed flange. The discharge component includes a fixedly connected discharge ring and a discharge flange. The feed flange and the discharge flange are fixedly connected to the support. The feed ring is provided with a feed pipe, which is connected to the hopper, and the discharge ring is provided with a discharge hopper.

3. The heating device of a horizontal mixing kiln according to claim 2, characterized in that: The feed inclined cone is provided with a plurality of inclined cone sprockets, the support is provided with a driving motor, the rotating shaft of the driving motor is provided with a motor sprocket aligned with the inclined cone sprocket, the motor sprocket and the inclined cone sprocket are linked and driven by a chain, the feed inclined cone and the discharge inclined cone are both provided with circular rings, and the support is provided with a plurality of supporting wheels that can rest on the circular rings.

4. A heating device for a horizontal mixing kiln according to claim 1, 2 or 3, characterized in that: A mixing structure is provided in the rotating tank, which includes a first spiral blade and a second spiral blade with opposite spiral directions. The outer ring 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 ring of the second spiral blade and the inner ring of the first spiral blade are connected by a plurality of connecting rods.

5. A heating device for a horizontal mixing kiln according to claim 2 or 3, characterized in that: The discharging inclined cone has a discharging port, and the inner wall of the discharging inclined cone is provided with a plurality of guide pieces, which extend from the right end of the discharging inclined cone to the position of the discharging port, and are arc-shaped as a whole, and the angle between the guide pieces and the inner wall of the discharging inclined cone is an acute angle, and the guide pieces and the discharging inclined cone form a feeding trough, and the inner wall of the discharging flange is provided with a transition ring, and the middle of the transition ring bulges toward the inner circle to form an angle, one side of the transition ring smoothly transitions to the inner wall of the discharging inclined cone, and the other side smoothly transitions to the inner wall of the discharging hopper, and the discharging hopper has an isolation frame, and the outer end of the isolation frame is provided with a cylinder, and the driving rod of the cylinder is inserted into the discharging hopper, and the other end of the driving rod is provided with a discharging tongue that can rest on the transition ring.

6. A heating device for a horizontal mixing kiln according to claim 2 or 3, characterized in that: The feed ring is provided with a temperature sensor inserted into the feed oblique cone, the feed pipe is provided with a pressure difference sensor, the exhaust pipe is provided with an oxygen sensor, and the outer ring of the rotating tank is provided with a heat insulation material layer.

7. A heating device for a horizontal mixing kiln according to claim 2 or 3, characterized in that: Thin-walled bearings and multiple graphite packing sealing components are arranged between the feed ring and the feed oblique cone, and between the discharge ring and the discharge oblique cone. The feed ring and the discharge ring are provided with oil passages communicating with the corresponding graphite packing sealing components, and the oil passage entrances are provided with oil injection nozzles.

8. A heating device for a horizontal mixing kiln according to claim 2 or 3, characterized in that: The inner rings of the feed ring and the discharge ring are both provided with multiple circles of first grooves, the feed inclined cone and the discharge inclined cone are both provided with multiple circles of second grooves that are staggered and connected to the first grooves, the feed ring and the discharge ring are provided with air ducts that are connected to the first grooves of the outermost circle, and the air duct entrances have air injection nozzles.

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