Lithium iron phosphate battery black powder low-temperature chlorination device

Abstract

The invention discloses a lithium iron phosphate battery black powder low-temperature chlorination device, and relates to the technical field of low-temperature chlorination, the lithium iron phosphate battery black powder low-temperature chlorination device comprises a base, the upper end of the base is provided with a reaction furnace through a supporting assembly, the middle part of the outer part of the reaction furnace is provided with a driving assembly, and the reaction furnace is internally provided with a mixing assembly; a motor is started to drive the reaction furnace to rotate, the reaction furnace inclines rightwards, so that black powder flows rightwards, the black powder at the right end of the reaction furnace can move leftwards through a second spiral plate, the black powder can be turned over through rotation of the reaction furnace, and the second spiral plate rotates anticlockwise; according to the invention, the baffle is arranged at the bottom of the reaction furnace, so that more black powder accumulated at the bottom of the reaction furnace is scraped, and the excessive black powder is conveyed to the right end of the reaction furnace, so that the black powder in the reaction furnace can be fully exposed in chlorine gas, and the chlorine gas entering the reaction furnace is uniformly dispersed in the reaction furnace by the fan blades; therefore, the black powder at any position in the reaction furnace can be effectively subjected to chlorination reaction.

Description

Technical Field

[0001] The invention relates to the technical field of low-temperature chlorination, in particular to a low-temperature chlorination device for black powder of a lithium iron phosphate battery. Background Art

[0002] With the continuous development of the electric vehicle market, the demand for lithium iron phosphate batteries is also increasing. At the same time, the recycling of waste batteries has also become an important issue. Low-temperature chlorination, as an effective method for treating lithium iron phosphate battery black powder, has broad application prospects. It can achieve efficient recovery of valuable metals in waste batteries, reduce resource waste and environmental pollution, and contribute to sustainable development. Under low temperature conditions, chlorine is used to react chemically with the metal elements in the lithium iron phosphate battery black powder to convert the metal elements into corresponding chlorides. This method can effectively separate and extract valuable metals in the black powder, such as lithium, iron, phosphorus, etc. Under low temperature conditions, the lithium iron phosphate battery black powder has a high selective chlorination of lithium, and the chlorination rate of lithium can reach 99%. The chlorination rate of other metal elements is extremely low, so that lithium can be better extracted.

[0003] A low-temperature chlorination furnace disclosed in publication number CN108529668A belongs to the technical field of metallurgical production equipment design and manufacturing. A low-temperature chlorination furnace is provided, which is convenient and smooth in slag discharge and does not cause gas loss of TiCl4 product due to the slag discharge structure. The low-temperature chlorination furnace comprises a low-temperature chlorination furnace body with a smoke exhaust port at the top, and the low-temperature chlorination furnace also comprises an open slag discharge structure and a disengageable plugging device, and the open slag discharge structure arranged at the lower part of the low-temperature chlorination furnace body is opened and closed by the disengageable plugging device.

[0004] At present, when the traditional low-temperature chlorination furnace performs chlorination reaction on black powder, the solid black powder is easy to pile up together, resulting in a slow reaction rate of the black powder accumulated at the bottom, and the chlorine gas is also unevenly distributed in the reactor, resulting in the black powder in the reactor not being able to fully contact with the chlorine gas, thereby reducing the efficiency of the reaction. In addition, during the chlorination reaction, the reaction will release heat, causing the temperature in the reactor to rise, which makes it impossible to maintain a low-temperature environment, thereby affecting the reaction products. Summary of the invention

[0005] The object of the present invention is to provide a low-temperature chlorination device for black powder of lithium iron phosphate batteries to solve the problems raised in the prior art.

[0006] To achieve the above purpose, the present invention provides the following technical solutions: a low-temperature chlorination device for black powder of lithium iron phosphate battery, comprising a base, a reaction furnace is installed on the upper end of the base through a supporting assembly, a driving assembly is arranged in the middle of the outside of the reaction furnace, a mixing assembly is arranged inside the reaction furnace, a feeding assembly is arranged at the outer end of the base, and a cooling assembly is arranged outside the base; The support assembly includes a side plate, and the left and right ends of the reaction furnace are both rotatably connected to the side plate, and the lower end of the side plate is fixedly connected to the base; The mixing assembly includes a first rotating shaft, the middle part of the reaction furnace is rotatably connected to the first rotating shaft, the left and right ends of the first rotating shaft are rotatably connected to the left and right side plates respectively, the left and right ends of the first rotating shaft are fixedly connected to connecting rods, the outer end of the connecting rod is fixedly connected to the first spiral plate, the inner side of the left end of the reaction furnace is fixedly connected to a second gear ring, the lower end of the second gear ring is meshed with a second gear, the second gear is rotatably connected to the left side plate, the left end of the first rotating shaft is fixedly connected to a third gear, and the third gear is meshed with the second gear; The feeding assembly includes a support frame, the left end of the base is fixedly mounted with the support frame, the upper end of the support frame is fixedly mounted with a barrel, the lower end of the barrel is fixedly connected with a feeding pipe, the right end of the feeding pipe is fixedly mounted on the upper end of the left side panel, and the middle part of the right side panel is fixedly mounted with an air intake pipe, and the feeding pipe and the air intake pipe are both interconnected with the interior of the reactor.

[0007] Preferably, a plurality of groups of second spiral plates are fixedly connected to the inner wall of the reaction furnace, the inner wall of the second spiral plate is in contact with the outer side of the first spiral plate, and the spiral directions of the first spiral plate and the second spiral plate are opposite.

[0008] Preferably, the mixing assembly also includes a mounting bracket, and the inner sides of the left and right side panels are fixedly mounted with mounting brackets, the middle part of the mounting bracket is rotatably connected to a second rotating shaft, the end of the second rotating shaft away from the side panel is fixedly connected to a fourth gear, the left and right ends of the first rotating shaft are fixedly connected to a fifth gear, the fourth gear and the fifth gear are meshed with each other, the end of the second rotating shaft away from the side panel is fixedly connected to a fan blade, and the left end of the air intake pipe is located on the right side of the fourth gear on the right side.

[0009] Preferably, the fourth gears on the left and right sides are respectively located at the upper end and the lower end inside the left and right ends of the reaction furnace.

[0010] Preferably, the support assembly also includes a mounting seat, the left and right ends of the base are fixedly mounted with mounting seats, the front and rear ends of the mounting seat are rotatably connected to support wheels, the outer sides of the left and right ends of the reactor are fixedly connected with wheel belts, and the wheel belts on the left and right sides are respectively engaged in the middle of the support wheels on the left and right sides.

[0011] Preferably, the drive assembly includes a first ring gear, the first ring gear is fixedly connected to the outer side of the middle part of the reactor, a motor and a gearbox are fixedly installed in the middle part of the base, the output shaft of the motor is fixedly connected to the input shaft of the gearbox, the output shaft of the gearbox is fixedly connected to the first gear, and the first gear and the first ring gear are meshed with each other.

[0012] Preferably, the upper end of the feed pipe is designed to be funnel-shaped, and the right end of the feed pipe and the left end of the air intake pipe respectively penetrate the left and right side panels and extend to the interior of the reaction furnace.

[0013] Preferably, the cooling component includes an air cooler, and the upper end of the base is located at the front side of the reactor and is fixedly installed with the air cooler. The outer sides of the left and right ends of the reactor are both provided with air collecting hoods, and the front and rear ends of the air collecting hood are respectively fixedly connected with an air inlet and an air outlet, and the front ends of the left and right groups of air inlets are fixedly connected with the same air inlet pipe, and the front end of the air inlet pipe is fixedly connected to the air outlet of the air cooler.

[0014] Preferably, the cooling component also includes a heat conducting plate, and the outer sides of the left and right ends of the reactor are both provided with heat conducting plates, and the space between the inner side of the heat conducting plate and the outer surface of the reactor is filled with heat conducting material, and the outer side of the heat conducting plate is fixedly connected with cooling fins, and the cooling fins are located inside the wind collecting hood.

[0015] Preferably, a support plate is fixedly connected to the outer side of the heat conducting plate, and an air guiding groove is formed at one end of the heat dissipating fin close to the heat conducting plate.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. The present application is provided with a reaction furnace, a driving component and a mixing component. By starting the motor, the first gear is driven to rotate counterclockwise, and then the first gear ring is driven to rotate clockwise, driving the reaction furnace to rotate clockwise. Since the reaction furnace is tilted to the right, the black powder added into the reaction furnace through the left side of the reaction furnace will flow to the right side. The black powder at the right end of the reaction furnace can be moved to the left side through the second spiral plate, thereby preventing the black powder from accumulating at the bottom of the reaction furnace, and the rotation of the reaction furnace can flip the black powder. At the same time, the second gear is driven to rotate clockwise through the second gear ring, thereby driving the third gear and the first rotating shaft to rotate counterclockwise, driving the second spiral plate It rotates counterclockwise to scrape off the black powder accumulated at the bottom of the reactor and transport the excess black powder to the right end of the reactor, so that the black powder in the reactor can be fully exposed to the chlorine gas. The rotation of the first shaft drives the fifth gear to rotate, thereby driving the fourth gear and the second shaft to rotate, and then driving the two sets of fan blades to rotate. The fan blades on the right side blow the chlorine gas entering the reactor to the left end of the reactor, and the fan blades on the left side blow the air on the upper side of the left end of the reactor to the right, thereby forming an airflow in the reactor, thereby making the chlorine gas in the reactor evenly dispersed, so that the black powder located anywhere in the reactor can effectively undergo chlorination reaction.

[0017] 2. The present application is provided with a cooling component, which first conducts the temperature of the reaction furnace through the heat conduction plate and the heat dissipation fins, and then starts the air cooler, which blows the cold air into the air collecting hood through the air inlet pipe and the air inlet, and finally blows it out through the exhaust port. The cold air brings out the heat of the heat conduction plate and the heat dissipation fins through the air collecting hood, thereby achieving a rapid cooling effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of a low-temperature chlorination device for black powder of a lithium iron phosphate battery according to the present invention; Figure 2 It is a schematic diagram of a partial three-dimensional structure of a low-temperature chlorination device for black powder of a lithium iron phosphate battery according to the present invention; Figure 3 For the present invention Figure 2 A schematic diagram of a front cross-section of the structure; Figure 4 For the present invention Figure 3 A schematic diagram of the structure enlargement at the center A; Figure 5 For the present invention Figure 3 A schematic diagram of the structure enlarged at B in the middle; Figure 6 It is a schematic diagram of a partial three-dimensional structure of a low-temperature chlorination device for black powder of a lithium iron phosphate battery according to the present invention; Figure 7 For the present invention Figure 6 A schematic diagram of a partial cross-section three-dimensional structure; Figure 8 For the present invention Figure 7 A schematic diagram of the structure enlarged at C in the middle; Fig. 9 For the present invention Figure 7 A schematic diagram of the structure at D in the middle is enlarged; Fig.10 It is a three-dimensional structural schematic diagram of an air collecting hood, an air inlet, an air inlet pipe and an air outlet of a low-temperature chlorination device for black powder of a lithium iron phosphate battery of the present invention; Fig.11 It is a three-dimensional structural schematic diagram of a heat conducting plate, a heat dissipating fin and a supporting plate of a black powder low-temperature chlorination device for a lithium iron phosphate battery according to the present invention; Fig.12 For the present invention Fig.11 Enlarged schematic diagram of the structure at E in the middle.

[0019] Numbers in the figure: 1, base; 2, reactor; 311, mounting seat; 312, support wheel; 313, belt; 314, side plate; 411, first gear ring; 412, motor; 413, gearbox; 414, first gear; 511, first rotating shaft; 512, connecting rod; 513, first spiral plate; 514, second gear ring; 515, second gear; 516, third gear; 517, second spiral plate; 51 8. Mounting bracket; 519. Second rotating shaft; 520. Fourth gear; 521. Fifth gear; 522. Fan blade; 611. Support frame; 612. Material barrel; 613. Feed pipe; 614. Air inlet pipe; 711. Air cooler; 712. Wind collecting hood; 713. Air inlet; 714. Air inlet pipe; 715. Air exhaust; 716. Heat conducting plate; 717. Heat dissipating fins; 718. Support plate; 719. Air guide slot. DETAILED DESCRIPTION

[0020] 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.

[0021] Example: Figure 1 - Fig. 9 As shown, the present invention provides a technical solution of a low-temperature chlorination device for black powder of a lithium iron phosphate battery, comprising a base 1, a reaction furnace 2 is installed on the upper end of the base 1 through a supporting assembly, a driving assembly is arranged in the middle of the outside of the reaction furnace 2, a mixing assembly is arranged inside the reaction furnace 2, and a feeding assembly is arranged at the outer end of the base 1; The support assembly includes a side plate 314, the left and right ends of the reactor 2 are rotatably connected to the side plate 314, the lower end of the side plate 314 is fixedly connected to the base 1, the support assembly also includes a mounting seat 311, the left and right ends of the base 1 are fixedly installed with the mounting seat 311, the front and rear ends of the mounting seat 311 are rotatably connected to the supporting wheel 312, the outer sides of the left and right ends of the reactor 2 are fixedly connected with the wheel belt 313, and the left and right side wheel belts 313 are respectively engaged in the middle of the supporting wheels 312 on the left and right sides, and the driving assembly includes a first gear ring 411, the outer side of the middle part of the reactor 2 is fixedly connected with the first gear ring 411, and the middle part of the base 1 is fixedly installed with an electric The motor 412 and the gearbox 413 are fixedly connected. The output shaft of the motor 412 is fixedly connected to the input shaft of the gearbox 413. The output shaft of the gearbox 413 is fixedly connected to the first gear 414. The first gear 414 and the first gear ring 411 are meshed with each other. By starting the motor 412, the output power of the motor 412 is reduced in speed through the gearbox 413. The output shaft of the gearbox 413 with reduced speed drives the first gear 414 to rotate counterclockwise, thereby driving the first gear ring 411 to rotate clockwise, and driving the reaction furnace 2 to rotate clockwise. At the same time, the reaction furnace 2 is supported by the supporting wheel 312, so as to ensure that the reaction furnace 2 can rotate stably. The mixing assembly includes a first rotating shaft 511, the middle part of the reaction furnace 2 is rotatably connected with the first rotating shaft 511, the left and right ends of the first rotating shaft 511 are rotatably connected to the left and right side plates 314 respectively, the left and right ends of the first rotating shaft 511 are fixedly connected with connecting rods 512, the outer ends of the connecting rods 512 are fixedly connected with the first spiral plate 513, the inner side of the left end of the reaction furnace 2 is fixedly connected with a second gear ring 514, the lower end of the second gear ring 514 is meshed with a second gear 515, the second gear 515 is rotatably connected to the left side plate 314, the left end of the first rotating shaft 511 is fixedly connected with a third gear 516, the third gear 516 and the second gear 515 are meshed with each other, and the inner wall of the reaction furnace 2 is fixedly connected with multiple A second spiral plate 517 is formed, the inner wall of the second spiral plate 517 is fitted with the outer side of the first spiral plate 513, the spiral directions of the first spiral plate 513 and the second spiral plate 517 are opposite, the mixing assembly also includes a mounting bracket 518, the inner sides of the left and right side plates 314 are fixedly mounted with mounting brackets 518, the middle part of the mounting bracket 518 is rotatably connected with a second rotating shaft 519, the end of the second rotating shaft 519 away from the side plate 314 is fixedly connected with a fourth gear 520, the left and right ends of the first rotating shaft 511 are fixedly connected with a fifth gear 521, the fourth gear 520 and the fifth gear 521 are meshed with each other, and the end of the second rotating shaft 519 away from the side plate 314 is fixedly connected with a fan blade 522. The left end of the air inlet pipe 614 is located on the right side of the fourth gear 520 on the right side, and the fourth gears 520 on the left and right sides are respectively located at the upper end and the lower end inside the left and right ends of the reactor 2; because the reactor 2 is tilted to the right, the black powder added into the reactor 2 through the left side of the reactor 2 will flow to the right, and the black powder at the right end of the reactor 2 can be moved to the left through the second spiral plate 517, so as to avoid the black powder from accumulating at the bottom of the reactor 2, and the rotation of the reactor 2 can turn the black powder over. At the same time, the second gear ring 514 drives the second gear 515 to rotate clockwise, and then drives the third gear 516 and the first rotating shaft 511 to rotate counterclockwise, and drives the second spiral plate 517 to rotate counterclockwise, so as to The black powder accumulated at the bottom of the reactor 2 is scraped off, and the excess black powder is transported to the right end of the reactor 2, so that the black powder in the reactor 2 can be fully exposed to the chlorine gas, and the first rotating shaft 511 rotates to drive the fifth gear 521 to rotate, thereby driving the fourth gear 520 and the second rotating shaft 519 to rotate, and then driving the two sets of fan blades 522 to rotate, the fan blades 522 on the right side blow the chlorine gas entering the reactor 2 to the left end of the reactor 2, and the fan blades 522 on the left side blow the air on the upper side of the left end of the reactor 2 to the right, so that the air in the reactor 2 forms an airflow, and then the chlorine gas in the reactor 2 is evenly dispersed, so that the black powder located at any place in the reactor 2 can effectively undergo chlorination reaction; The feed assembly includes a support frame 611, the left end of the base 1 is fixedly mounted with the support frame 611, the upper end of the support frame 611 is fixedly mounted with a barrel 612, the lower end of the barrel 612 is fixedly connected with a feed pipe 613, the right end of the feed pipe 613 is fixedly mounted on the upper end of the left side plate 314, and the middle part of the right side plate 314 is fixedly mounted with an air intake pipe 614, and the feed pipe 613 and the air intake pipe 614 are both connected to the interior of the reactor 2, and the feed pipe 613 and the air intake pipe 614 are connected to the interior of the reactor 2. Black powder is added into the barrel 612, and the black powder enters into the reactor 2 through the feed pipe 613, and chlorine is added into the reactor 2 through the air intake pipe 614. The upper end of the feed pipe 613 is designed in a funnel shape, and the right end of the feed pipe 613 and the left end of the air intake pipe 614 respectively penetrate the left and right side panels 314 and extend to the interior of the reactor 2. The material accumulated at the small-diameter circular tube at the right end of the feed pipe 613 can block the chlorine and prevent it from leaking.

[0022] See also Figure 1 , Figure 2 , Figure 6 , Fig.10 , Fig.11 and Fig.12 A cooling component is arranged on the outside of the base 1, and the cooling component includes a cooling fan 711. The model of the cooling fan 711 can be KLL. The upper end of the base 1 is located at the front side of the reaction furnace 2 and the cooling fan 711 is fixedly installed. The outer sides of the left and right ends of the reaction furnace 2 are both provided with air collecting covers 712. The front and rear ends of the air collecting covers 712 are respectively fixedly connected with air inlets 713 and air outlets 715. The front ends of the left and right groups of air inlets 713 are both fixedly connected with the same air inlet pipe 714. The front end of the air inlet pipe 714 is fixedly connected with the air outlet of the cooling fan 711. The cooling component also includes a heat conducting plate 716. The outer sides of the left and right ends of the reaction furnace 2 are both provided with heat conducting plates 716. The inner side of the heat conducting plate 716 and the outer surface of the reaction furnace 2 are filled with heat conducting materials. The outer side of the heat conducting plate 716 is fixedly connected with heat dissipation fins 717. The heat dissipation fins 717 are located inside the air collecting hood 712. The temperature of the reaction furnace 2 is first discharged through the heat conducting plate 716 and the heat dissipation fins 717. By starting the air cooler 711, the air cooler 711 blows cold air into the air collecting hood 712 through the air inlet pipe 714 and the air inlet 713, and finally blows it out through the exhaust port 715. The cold air brings out the heat of the heat conducting plate 716 and the heat dissipation fins 717 through the air collecting hood 712, thereby achieving a rapid cooling effect. A support plate 718 is fixedly connected to the outer side of the heat conducting plate 716. An air guide groove 719 is provided at one end of the heat dissipation fin 717 close to the heat conducting plate 716. When the cold air flows in the air collecting hood 712, the cold air will flow along the heat conducting plate 716 through the air guide groove 719, thereby more effectively taking away the temperature of the heat conducting plate 716 and the heat dissipation fins 717.

[0023] Working principle: First, black powder is added into the barrel 612, and the black powder enters the reactor 2 through the feed pipe 613, and chlorine is added into the reactor 2 through the air intake pipe 614. The reactor 2 is tilted to the right, so that the black powder added into the reactor 2 through the feed pipe 613 will flow to the right. At this time, the motor 412 is started, and the output power of the motor 412 is reduced in speed through the gearbox 413. The output shaft of the gearbox 413 with reduced speed drives the first gear 414 to rotate counterclockwise, and then drives the first gear ring 411 to rotate clockwise, and drives the reactor 2 to rotate clockwise. The black powder at the right end of the reactor 2 can be moved to the left through the second spiral plate 517, so as to avoid the black powder from accumulating at the bottom of the reactor 2, and the rotation of the reactor 2 can flip the black powder. At the same time, the second gear ring 51 The second gear 515 is driven to rotate clockwise, and then the third gear 516 and the first rotating shaft 511 are driven to rotate counterclockwise, and the second spiral plate 517 is driven to rotate counterclockwise, so that the black powder accumulated at the bottom of the reaction furnace 2 is scraped off, and the excess black powder is transported to the right end of the reaction furnace 2, so that the black powder in the reaction furnace 2 can be fully exposed to the chlorine gas, and the rotation of the first rotating shaft 511 drives the fifth gear 521 to rotate, thereby driving the fourth gear 520 and the second rotating shaft 519 to rotate, and then driving the two sets of fan blades 522 to rotate, the fan blades 522 on the right side blow the chlorine gas entering the reaction furnace 2 to the left end of the reaction furnace 2, and the fan blades 522 on the left side blow the air on the upper side of the left end of the reaction furnace 2 to the right, so that the air in the reaction furnace 2 forms an airflow, and then the chlorine gas in the reaction furnace 2 is evenly dispersed; The temperature of the reaction furnace 2 is conducted away through the heat conducting plate 716 and the heat dissipating fins 717. By starting the air cooler 711, the air cooler 711 blows cold air into the air collecting hood 712 through the air inlet pipe 714 and the air inlet 713, and finally blows it out through the air exhaust port 715. The cold air takes away the heat of the heat conducting plate 716 and the heat dissipating fins 717 through the air collecting hood 712.

[0024] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A low-temperature chlorination device for black powder of lithium iron phosphate battery, characterized in that: It comprises a base (1), a reaction furnace (2) is mounted on the upper end of the base (1) via a supporting assembly, a driving assembly is arranged in the middle of the outside of the reaction furnace (2), a mixing assembly is arranged inside the reaction furnace (2), a feeding assembly is arranged at the outer end of the base (1), and a cooling assembly is arranged outside the base (1); The support assembly comprises a side plate (314), the left and right ends of the reaction furnace (2) are both rotatably connected to the side plates (314), and the lower end of the side plate (314) is fixedly connected to the base (1); The mixing assembly comprises a first rotating shaft (511), the middle part of the reaction furnace (2) is rotatably connected to the first rotating shaft (511), the left and right ends of the first rotating shaft (511) are rotatably connected to the left and right side plates (314) respectively, the left and right ends of the first rotating shaft (511) are fixedly connected to connecting rods (512), the outer ends of the connecting rods (512) are fixedly connected to the first spiral plate (513), the inner side of the left end of the reaction furnace (2) is fixedly connected to a second gear ring (514), the lower end of the second gear ring (514) is meshed with a second gear (515), the second gear (515) is rotatably connected to the left side plate (314), the left end of the first rotating shaft (511) is fixedly connected to a third gear (516), the third gear (516) and the second gear (515) are meshed with each other; The feed assembly comprises a support frame (611), the support frame (611) is fixedly mounted on the left end of the base (1), a barrel (612) is fixedly mounted on the upper end of the support frame (611), a feed pipe (613) is fixedly connected to the lower end of the barrel (612), the right end of the feed pipe (613) is fixedly mounted on the upper end of the left side plate (314), and an air intake pipe (614) is fixedly mounted in the middle of the right side plate (314), and the feed pipe (613) and the air intake pipe (614) are both interconnected with the interior of the reaction furnace (2).

2. A low-temperature chlorination device for black powder of lithium iron phosphate battery according to claim 1, characterized in that: A plurality of groups of second spiral plates (517) are fixedly connected to the inner wall of the reaction furnace (2); the inner wall of the second spiral plate (517) is in contact with the outer side of the first spiral plate (513); and the spiral directions of the first spiral plate (513) and the second spiral plate (517) are opposite.

3. A low-temperature chlorination device for black powder of lithium iron phosphate battery according to claim 1, characterized in that: The mixing assembly further comprises a mounting bracket (518), the mounting bracket (518) being fixedly mounted on the inner sides of the left and right side panels (314), the middle portion of the mounting bracket (518) being rotatably connected to a second rotating shaft (519), one end of the second rotating shaft (519) away from the side panel (314) being fixedly connected to a fourth gear (520), the left and right ends of the first rotating shaft (511) being fixedly connected to a fifth gear (521), the fourth gear (520) and the fifth gear (521) being meshed with each other, one end of the second rotating shaft (519) away from the side panel (314) being fixedly connected to a fan blade (522), and the left end of the air inlet pipe (614) being located on the right side of the fourth gear (520) on the right side.

4. A low-temperature chlorination device for black powder of lithium iron phosphate battery according to claim 3, characterized in that: The fourth gears (520) on the left and right sides are respectively located at the upper end and the lower end inside the left and right ends of the reaction furnace (2).

5. A low-temperature chlorination device for black powder of lithium iron phosphate battery according to claim 1, characterized in that: The support assembly further comprises a mounting seat (311), the mounting seats (311) being fixedly mounted on both left and right ends of the base (1), the front and rear ends of the mounting seat (311) being rotatably connected to supporting wheels (312), the outer sides of both left and right ends of the reaction furnace (2) being fixedly connected to wheel belts (313), the wheel belts (313) on the left and right sides being respectively engaged with the middle parts of the supporting wheels (312) on the left and right sides.

6. A low-temperature chlorination device for black powder of lithium iron phosphate battery according to claim 1, characterized in that: The driving assembly comprises a first gear ring (411), the first gear ring (411) is fixedly connected to the outer side of the middle part of the reaction furnace (2), a motor (412) and a gearbox (413) are fixedly installed in the middle part of the base (1), an output shaft of the motor (412) is fixedly connected to an input shaft of the gearbox (413), the output shaft of the gearbox (413) is fixedly connected to a first gear (414), and the first gear (414) and the first gear ring (411) are meshed with each other.

7. A low-temperature chlorination device for black powder of lithium iron phosphate battery according to claim 1, characterized in that: The upper end of the feed pipe (613) is designed to be funnel-shaped, and the right end of the feed pipe (613) and the left end of the air intake pipe (614) respectively penetrate the left and right side plates (314) and extend into the interior of the reaction furnace (2).

8. A low-temperature chlorination device for black powder of lithium iron phosphate battery according to claim 1, characterized in that: The cooling component comprises an air cooler (711), the upper end of the base (1) is located in front of the reaction furnace (2) and is fixedly installed with the air cooler (711), the outer sides of the left and right ends of the reaction furnace (2) are both sleeved with air collecting covers (712), the front and rear ends of the air collecting covers (712) are respectively fixedly connected with an air inlet (713) and an air outlet (715), the front ends of the left and right groups of the air inlets (713) are both fixedly connected with the same air inlet pipe (714), and the front end of the air inlet pipe (714) is fixedly connected to the air outlet of the air cooler (711).

9. A low-temperature chlorination device for black powder of lithium iron phosphate battery according to claim 8, characterized in that: The cooling component further comprises a heat conducting plate (716), the outer sides of the left and right ends of the reaction furnace (2) are both provided with heat conducting plates (716), the inner sides of the heat conducting plates (716) and the outer surface of the reaction furnace (2) are filled with heat conducting material, the outer sides of the heat conducting plates (716) are fixedly connected with heat dissipation fins (717), and the heat dissipation fins (717) are located inside the air collecting cover (712).

10. A low-temperature chlorination device for black powder of lithium iron phosphate battery according to claim 9, characterized in that: A support plate (718) is fixedly connected to the outer side of the heat conducting plate (716), and an air guide groove (719) is provided at one end of the heat dissipation fin (717) close to the heat conducting plate (716).

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