Vertical roasting furnace and battery material processing device

Abstract

A vertical roasting furnace and a battery material processing device. The vertical roasting furnace comprises a vertical furnace body (1), a feeding mechanism (2), sintering pipes (3), and a heating mechanism (4). The vertical roasting furnace uses a vertical structure, and under the action of gravity, materials sequentially flow through a plurality of reaction zones in a material sintering cavity (10) in a fluid state, so as to carry out real-time transmission and dynamic heating and cooling on the materials, thereby realizing dynamic sintering of the materials and improving the sintering effect. In addition, there is no need to provide a power device for driving the materials to move, thereby saving energy. The dried materials having a high temperature do not need to be loaded into a saggar for cooling, but are directly introduced into the top reaction zone in the material sintering cavity (10) by means of the feeding mechanism (2), thereby improving the sintering efficiency of the materials.

Description

Vertical roasting furnace and battery material processing equipment

[0001] The present application claims priority to Chinese Patent Application No. 202510609632.6, filed on May 13, 2025, and Chinese Patent Application No. 202410852958.7, filed on June 28, 2024, the contents of which are incorporated herein by reference in their entirety. TECHNICAL FIELD

[0002] The present application relates to the technical field of battery material processing equipment, for example, to a vertical roasting furnace and battery material processing equipment. BACKGROUND

[0003] The processing technology of the positive and negative electrode materials of the battery includes a sintering process. The conventional sintering equipment for the positive and negative electrode materials of the battery is generally a roller kiln or a tunnel kiln. When sintering is performed using a roller kiln or a tunnel kiln, the material (i.e., the positive and negative electrode materials of the battery) needs to be first loaded into a saggar, and then the saggar loaded with the material is sequentially passed through a heating zone, a holding zone, and a cooling zone of the kiln, thereby completing the sintering.

[0004] However, before the material is loaded into the saggar, the material needs to be cooled first, and after being loaded into the saggar, the material needs to be heated and cooled again, which wastes energy due to the repeated heating and cooling of the material. In addition, the conventional sintering equipment needs to be powered by a roller to drive the saggar loaded with the material to sequentially pass through different zones of the kiln. The horizontal arrangement makes the structure of the equipment complex, occupies a large area, and has a high cost. Furthermore, the material loaded in the saggar is in a static heating process, the heating and cooling processes are slow, and the temperature is not very uniform, which reduces the quality of the material. SUMMARY

[0005] The present application provides a vertical roasting furnace, which can not only realize power-free conveying of the material, has a compact structure, occupies a small area, has a low manufacturing cost, and has a good sintering effect on the material, thereby reducing the energy required for sintering the material.

[0006] The present application also provides a battery material processing equipment, which has a compact structure, occupies a small area, has a low manufacturing cost, has a good sintering effect on the material, and has low energy consumption.

[0007] In one aspect, the present application provides a vertical roasting furnace, comprising:

[0008] A vertical furnace body, the vertical furnace body having a material sintering cavity therein, the material sintering cavity comprising a plurality of reaction zones sequentially communicated from top to bottom, at least part of the reaction zones having different reaction conditions;

[0009] A feeding mechanism is in communication with the sintering chamber and is configured to feed the material to be sintered into the top reaction zone, and the material can flow downward to the bottom reaction zone under the action of gravity;

[0010] At least one sintering pipe is arranged in at least one reaction zone of the sintering chamber in the vertical direction, and the material flows in the sintering pipe and the flow rate can be adjusted;

[0011] A heating mechanism is arranged near the sintering pipe and is configured to heat the material.

[0012] In some embodiments, a plurality of turnover mechanisms are arranged on the sintering pipe and are spaced apart in the vertical direction, each turnover mechanism includes a plurality of turnover plates, and each turnover plate can be switched between a closed state and an open state;

[0013] In the closed state, all the turnover plates in each turnover mechanism are spliced to close the cross section of the sintering pipe, thereby dividing the sintering pipe into a plurality of sub-zones corresponding to the reaction zone;

[0014] In the open state, all the turnover plates in each turnover mechanism are not in contact with each other, so that the adjacent sub-zones are in communication;

[0015] During the switching between the closed state and the open state, all the turnover plates in each turnover mechanism turn and scatter the material at the bottom of the corresponding sub-zone.

[0016] In some embodiments, each turnover mechanism further includes a plurality of transmission plates, a driving plate and a turnover cylinder arranged outside the vertical furnace body, each turnover plate is correspondingly provided with a transmission plate, the first end of the transmission plate is fixed with the rotating shaft of the corresponding turnover plate, the second end of the transmission plate is rotatably connected with the driving plate, and the output end of the turnover cylinder is rotatably connected with the driving plate. The turnover cylinder is configured to drive all the turnover plates in each turnover mechanism to rotate synchronously.

[0017] In some embodiments, the edge of the turnover plate is provided with a stepped surface, and the stepped surfaces of the adjacent two turnover plates are spliced to form a flat plate surface in the closed state.

[0018] In some embodiments, the edges of the adjacent two turnover plates overlap with each other in the closed state.

[0019] In some embodiments, a stop block is arranged on the inner wall of the sintering pipe to limit the edges of the two adjacent turnover plates.

[0020] In some embodiments, the sintering pipe is designed in a segmented manner according to a plurality of sub-zones, an adapter frame is arranged between the adjacent two segments of the sintering pipe, and the turnover mechanism is arranged on the adapter frame.

[0021] In some embodiments, the plurality of reaction zones comprises, from top to bottom, a flash zone, a constant temperature zone, a buffer zone and a cooling zone, the feeding mechanism is in communication with the flash zone, the flash zone is configured to heat the material, the constant temperature zone is configured to keep the material warm, the heating mechanism is located in the constant temperature zone, the buffer zone is configured to initially cool the material, and the cooling zone is configured to further cool the material.

[0022] In some embodiments, the top of the sintering pipe extends to the constant temperature zone, and the bottom of the sintering pipe extends to the buffer zone.

[0023] In some embodiments, the sintering pipe comprises a first pipe segment and a second pipe segment in communication in a stepped manner, the first pipe segment has a larger cross-sectional size than the second pipe segment, the first pipe segment is located in the constant temperature zone, and the second pipe segment is located in the buffer zone.

[0024] In some embodiments, the reaction zone comprises a flash zone located at the top of the material sintering cavity, the flash zone is provided with a material guide, the material guide has a large opening end and at least one small opening end, the large opening end is opposite to the discharge port of the feeding mechanism, and the small opening end is in communication with the top of the sintering pipe one by one.

[0025] In some embodiments, the heating mechanism comprises at least one of the following:

[0026] The heating mechanism comprises a heating pipe which traverses the reaction zone; or,

[0027] The heating mechanism comprises a heating plate provided at the furnace wall of the vertical furnace body; or,

[0028] The heating mechanism is a hot air mechanism, the hot air mechanism comprises a fan, a hot air pipe and a heating element, the fan is configured to introduce air into the hot air pipe, the hot air pipe is in communication with the material sintering cavity, the heating element is provided in the hot air pipe, and the air heated by the heating element flows to the sintering pipe.

[0029] In some embodiments, the reaction zone comprises a cooling zone located at the bottom end of the material sintering cavity, and the vertical roasting furnace further comprises a cooling mechanism, the cooling mechanism comprises a cooling coil pipe arranged around the cooling zone, and a cooling medium flows through the cooling coil pipe;

[0030] Alternatively, the vertical furnace body is provided with a cooling cavity in the furnace wall opposite to the cooling zone, and a cooling medium flows through the cooling cavity.

[0031] In some embodiments, the reaction zone comprises a cooling zone located at the bottom end of the material sintering cavity, and the cooling zone is provided with a material dispersion mechanism;

[0032] The material dispersion mechanism comprises a blowing pipe, the blowing pipe comprises a blowing part which is located below the sintering pipe and is distributed in a circumferential direction, and a plurality of air outlets of the blowing part are arranged towards the sintering pipe;

[0033] Alternatively, the material dispersion mechanism comprises at least one material dispersion plate, the material dispersion plate is arranged below the sintering pipe, the material dispersion plate comprises a tapered portion and a mesh portion, the top end of the tapered portion of the material dispersion plate arranged at the top layer is arranged opposite to the outlet of the sintering pipe, and the mesh portion of the material dispersion plate arranged at the top layer is arranged around the bottom end of the tapered portion, and the tapered portions of the two layers of material dispersion plates arranged in the vertical direction are arranged in a staggered manner.

[0034] In some embodiments, the surface of the vertical furnace body is provided with a detection port for detecting the atmosphere and the furnace pressure in the reaction zone and a thermocouple for detecting the temperature in the reaction zone.

[0035] In some embodiments, the sintering pipe is a stainless steel cylinder, the vertical furnace body is a carbon steel cylinder, a material sintering cavity is formed between the stainless steel cylinder and the carbon steel cylinder, and the material sintering cavity is provided with a heating mechanism arranged around the sintering pipe and thermal insulation cotton arranged around the heating mechanism.

[0036] In another aspect, the application provides a battery material processing equipment, comprising a spray dryer and the vertical roasting furnace of any of the above embodiments, the spray dryer is arranged to dry the material, and the discharge pipe of the spray dryer is communicated with the vertical roasting furnace. BRIEF DESCRIPTION OF DRAWINGS

[0037] Fig. 1 is an external structure diagram of the vertical roasting furnace provided by the embodiment one of the application;

[0038] Fig. 2 is a schematic diagram of the internal structure of a vertical furnace body related to the embodiment one of the application;

[0039] Fig. 3 is a schematic diagram of the structure of a feeding mechanism related to the embodiment one of the application;

[0040] Fig. 4 is a sectional view of the internal structure of a vertical furnace body related to the embodiment one of the application;

[0041] Fig. 5 is a schematic diagram of the structure of a heating mechanism related to the embodiment two of the application;

[0042] Fig. 6 is a schematic diagram of the structure of a heating mechanism related to the embodiment three of the application;

[0043] Fig. 7 is a schematic diagram of the structure of a cooling mechanism related to the embodiment four of the application;

[0044] Fig. 8 is a schematic diagram of the structure of a material dispersion mechanism related to the embodiment five of the application;

[0045] Fig. 9 is a schematic diagram of the structure of a material turning mechanism related to the embodiment six of the application;

[0046] Fig. 10 is a schematic diagram of the external structure of the material turning mechanism related to the embodiment six of the application;

[0047] Fig. 11 is a schematic diagram of the internal structure of a material turning mechanism according to an embodiment of the present application;

[0048] Fig. 12 is a schematic diagram of the internal structure of a material turning mechanism according to an embodiment of the present application;

[0049] Fig. 13 is a schematic diagram of the structure of a battery material processing device according to an embodiment of the present application;

[0050] Fig. 14 is a schematic diagram of the structure of a blowing pipe according to some embodiments of the present application;

[0051] Fig. 15 is a schematic diagram of the structure of a material dispersion mechanism according to some embodiments of the present application, with the dispersion plate located at the top layer;

[0052] Fig. 16 is a schematic diagram of the structure of a material dispersion mechanism according to some embodiments of the present application, with the dispersion plate located at the bottom layer.

[0053] In the drawings: 1, vertical furnace body; 10, material sintering cavity; 11, flash hot zone; 12, constant temperature zone; 121, preheating zone; 122, first constant temperature zone; 123, second constant temperature zone; 13, buffer zone; 14, cooling zone; 15, cooling air inlet; 16, hot air outlet; 17, heat insulation cotton; 18, detection port; 19, thermocouple; 2, feeding mechanism; 21, feeding pipe; 22, stirring tank; 23, stirring motor; 24, stirring shaft; 25, stirring blade; 26, mesh plate; 27, uniform distribution plate; 28, air injection pipe; 29, liquid injection pipe; 3, sintering pipeline; 31, first pipe section; 32, second pipe section; 33, stop block; 34, linking frame; 4, heating mechanism; 41, heating pipe; 42, heating plate; 43, fan; 44, air heating pipe; 45, heating element; 46, filter; 47, one-way valve; 5, material guide; 6, cooling mechanism; 61, cooling coil; 62, cooling medium inlet; 63, cooling medium outlet; 64, cooling cavity; 65, cooling water inlet; 66, cooling water outlet; 7, material dispersion mechanism; 71, blowing pipe; 711, air injection part; 712, inner ring pipe; 713, outer ring pipe; 714, communication branch pipe; 72, air outlet; 73, dispersion plate; 74, conical part; 75, mesh part; 8, rotary valve; 81, vibrating air hammer; 9, material turning mechanism; 91, turning plate; 911, step surface; 92, transmission plate; 93, driving plate; 94, turning cylinder; 100, vertical roasting furnace; 200, spray dryer; 210, discharge pipe; 300, bag-type dust collector. DETAILED DESCRIPTION

[0054] The present application will be described below with reference to the drawings and embodiments. The embodiments described herein are only for the purpose of explaining the present application. For the purpose of description, only the parts related to the present application are shown in the drawings.

[0055] In the description of the present application, unless specifically defined and limited otherwise, the terms "connected", "connected", "fixed" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integral; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium, or internal communication of two elements or interaction relationship between two elements. For those skilled in the art, the meaning of the above terms in the present application can be understood as appropriate.

[0056] In the present application, unless specifically defined and limited otherwise, the first feature "on" or "under" the second feature can include that the first feature and the second feature are in direct contact, or that the first feature and the second feature are not in direct contact but are in contact through another feature between them. Moreover, the first feature "on", "above" and "above" the second feature includes that the first feature is directly above and obliquely above the second feature, or indicates that the first feature is higher than the second feature in horizontal height. The first feature "under", "below" and "below" the second feature includes that the first feature is directly below and obliquely below the second feature, or indicates that the first feature is lower than the second feature in horizontal height.

[0057] In the description of the present embodiment, the terms "up", "down", "left", "right" and other orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation.

[0058] In addition, the terms "first", "second" and the like are used to distinguish in description, and have no special meaning.

[0059] Embodiment one:

[0060] The present embodiment provides a vertical roasting furnace 100, which can be used in a battery material processing equipment to sinter positive and negative electrode materials of a battery. The vertical roasting furnace 100 can be used in other equipment in addition to being used in the battery material processing equipment to sinter the positive and negative electrode materials, so as to realize the processing of other materials having sintering or drying needs. For the convenience of description, the following is collectively referred to as "material" for the material to be sintered.

[0061] As shown in FIG. 1 and FIG. 2, the vertical roasting furnace 100 comprises a vertical furnace body 1, a feeding mechanism 2, a sintering pipeline 3 and a heating mechanism 4, wherein the vertical furnace body 1 has a material sintering cavity 10 therein, the material sintering cavity 10 comprises a plurality of reaction zones which are sequentially communicated from top to bottom, and the reaction conditions of at least part of the reaction zones are different; the feeding mechanism 2 is communicated with the material sintering cavity 10 and is arranged to input material into the reaction zone located at the top, and the material can flow downward to the reaction zone located at the bottom under the action of gravity; the sintering pipeline 3 is arranged at least one, and the sintering pipeline 3 is arranged in at least one reaction zone of the material sintering cavity 10 along the vertical direction, and the material flows in the sintering pipeline 3 and the flow speed is adjustable; the heating mechanism 4 is arranged close to the sintering pipeline 3 and is arranged to heat the material.

[0062] Compared with the related art which adopts the saggar to load the material, the material is filled and compacted in the saggar, and the saggar loaded with the material needs to be driven by a power equipment to pass through different reaction zones of the kiln horizontally to complete sintering, which causes slow temperature rise of the material at the saggar core, uneven temperature of the material at the saggar core and the surface layer, and finally poor sintering effect and low sintering rate of the material, and the horizontal arrangement and power driving cause the whole equipment structure to be dispersed, large occupied area and high manufacturing cost.

[0063] The vertical roasting furnace 100 provided by the embodiment adopts a vertical structure, the material sintering cavity 10 of the vertical furnace body 1 is divided into a plurality of reaction zones in the height direction, and after the dry and high-temperature material is directly input into the reaction zone located at the top of the material sintering cavity 10 by the feeding mechanism 2, the material in a granular state can flow through the plurality of reaction zones of the material sintering cavity 10 in a fluid state under the action of gravity, the gap between the materials is large during the flow process, the material is transmitted and dynamically temperature-raised in real time during the process, not only the dynamic sintering of the material is realized, the sintering effect is improved, and the power equipment for driving the material to move is not needed, energy is saved, the structure of the equipment is compact, the occupied area is reduced, and the manufacturing cost is reduced. Moreover, the vertical roasting furnace 100 does not need to load the material with the saggar, the dry and high-temperature material does not need to be loaded into the saggar to be cooled, but is directly input into the reaction zone located at the top of the material sintering cavity 10, so that the material does not need to be repeatedly temperature-raised and lowered, and the sintering efficiency of the material is improved.

[0064] Optionally, the vertical furnace body 1 is a cylindrical structure comprising a top wall plate, an annular side wall plate and a bottom wall plate. In order to support the vertical furnace body 1, the vertical roasting furnace 100 further comprises a support frame arranged below the vertical furnace body 1 to stably lift the vertical furnace body 1. Exemplarily, the support frame is a frame structure made of a plurality of rod members.

[0065] In some embodiments, four reaction zones are provided, which are, from top to bottom, the flash zone 11, the constant temperature zone 12, the buffer zone 13 and the cooling zone 14. The feeding mechanism 2 is in communication with the flash zone 11, which is configured to heat the material. The constant temperature zone 12 is configured to keep the material at a constant temperature. The heating mechanism 4 is located in the constant temperature zone 12. The buffer zone 13 is configured to cool the material initially. The cooling zone 14 is configured to cool the material again.

[0066] When the material is the positive and negative electrode material of a battery, the sintering process of the positive and negative electrode material generally includes heating, keeping temperature and cooling. In other embodiments, the number of reaction zones can be increased or decreased according to requirements, and is not limited to four. For example, the constant temperature zone 12 can be further divided into a preheating zone 121, a first constant temperature zone 122 and a second constant temperature zone 123.

[0067] The feeding mechanism 2 can be provided as one or more according to requirements. When the feeding mechanism 2 is provided as multiple, the multiple feeding mechanisms 2 are arranged at intervals on the top wall plate of the vertical furnace body 1.

[0068] In some embodiments, as shown in FIG. 3, the feeding mechanism 2 includes a feeding pipe 21, a stirring tank 22, a stirring motor 23, a stirring shaft 24, stirring blades 25, a mesh plate 26 and a uniform distribution plate 27. The stirring motor 23 is installed on the top of the stirring tank 22. The stirring shaft 24 and the stirring blades 25 are both arranged in the stirring tank 22. The motor shaft of the stirring motor 23 is coaxially connected with the stirring shaft 24. Multiple stirring blades 25 are arranged at intervals in the circumferential direction of the stirring shaft 24. Under the drive of the stirring motor 23, the stirring shaft 24 and the stirring blades 25 can rotate. The first end of the feeding pipe 21 is a feeding port. The second end of the feeding pipe 21 is in communication with the side wall of the stirring tank 22. The mesh plate 26 is arranged in the stirring tank 22 and below the multiple stirring blades 25. The uniform distribution plate 27 is funnel-shaped and has multiple uniform distribution holes arranged radially thereon. The small end of the uniform distribution plate 27 is inserted into the bottom opening of the stirring tank 22.

[0069] The dried material enters the feeding pipe 21 through the feeding port, and enters the stirring tank 22 through the feeding pipe 21. Under the drive of the stirring motor 23, the stirring shaft 24 drives the stirring blades 25 to stir the material in the stirring tank 22, which can disperse and refine the material. The material falls to the mesh plate 26 under the action of gravity, and continues to fall to the uniform distribution plate 27 after being filtered by the mesh plate 26. After being uniformly distributed by the uniform distribution plate 27, the material falls into the flash zone 11 for heating.

[0070] In some embodiments, at the side wall of the vertical furnace body 1 forming the flash zone 11, the side wall of the vertical roasting furnace 100 is further provided with a gas injection pipe 28 for injecting nitrogen. The gas injection pipe 28 is connected with a nitrogen source. The nitrogen in the nitrogen source is injected into the material sintering cavity 10 through the gas injection pipe 28. Optionally, multiple gas injection pipes 28 are arranged at intervals in the circumferential direction of the vertical furnace body 1.

[0071] In some embodiments, the side wall of the vertical roaster 100, at which the vertical furnace body 1 forms the flash zone 11, is further provided with a liquid injection pipe 29 for injecting a reaction reagent, and the liquid injection pipe 29 is connected to a reaction reagent source. The reagent in the reaction reagent source is injected into the material sintering cavity 10 through the liquid injection pipe 29. Optionally, a plurality of liquid injection pipes 29 are provided and are spaced apart in the circumferential direction of the vertical furnace body 1.

[0072] In some embodiments, the side wall of the vertical roaster 100, at which the vertical furnace body 1 forms the flash zone 11, is further fixed with a boiling bed. It should be noted that the structure for rapidly heating the material in the flash zone 11 can refer to related technologies.

[0073] In order to guide the material into the flash zone 11, the flash zone 11 is provided with a material guide 5, as shown in FIG. 3. The material guide 5 has a large opening end and at least one small opening end. The large opening end of the material guide 5 is opposite to the discharge port of the feeding mechanism 2. The large opening end of the material guide 5 forms a first opening with a large opening area, and the small opening end forms a second opening with a small opening area. The material enters the material guide 5 through the first opening and flows along the inclined inner wall of the material guide 5 to the second opening.

[0074] In some embodiments, the number of second openings can be flexibly set according to requirements, for example, four second openings are arranged in two rows and two columns in the horizontal plane. In one embodiment, the material guide 5 is a stainless steel piece made of stainless steel. In one embodiment, the top end of the material guide 5 extends to the top of the flash zone 11, and the bottom end of the material guide 5 extends to the junction of the flash zone 11 and the constant temperature zone 12.

[0075] The number of sintering pipes 3 can be set to one or more according to requirements, and the number of sintering pipes 3 is the same as the number of second openings of the material guide 5. The top of each sintering pipe 3 corresponds to the small opening end of the material guide 5 in communication, so that the top opening of each sintering pipe 3 corresponds to the plurality of second openings in communication. As shown in FIGS. 2 and 4, in one embodiment, six sintering pipes 3 are provided, each sintering pipe 3 is arranged in the vertical direction, and the six sintering pipes 3 are arranged in two rows and three columns in the horizontal plane. Each sintering pipe 3 can independently sinter the material, avoiding interference between different materials, greatly improving the sintering efficiency and the integration of the vertical sintering furnace. In other embodiments, the number of sintering pipes 3 can also be increased or decreased according to requirements, and is not limited to six.

[0076] Optionally, the top of the sintering pipe 3 extends to the constant temperature zone 12, and the bottom of the sintering pipe 3 extends to the buffer zone 13. In this way, the flow time of the material in the sintering pipe 3 can be prolonged, and the sintering effect can be improved.

[0077] In some embodiments, as shown in Figure 2, the sintering pipe 3 includes a first pipe section 31 and a second pipe section 32 connected in a stepped manner. The cross-sectional dimension of the first pipe section 31 is larger than that of the second pipe section 32. The first pipe section 31 is located within the constant temperature zone 12, and the second pipe section 32 is located within the buffer zone 13. By changing the cross-sectional area of ​​the sintering pipe 3, the movement speed of the material flowing within the sintering pipe 3 slows down after entering the buffer zone 13, which helps to prolong the first cooling time and thus improves the sintering effect. In other embodiments, the sintering pipe 3 can also be designed as a tubular structure with more stepped surfaces, thereby realizing two, three, or more variable cross-section designs.

[0078] The heating mechanism 4 is used to provide heat to the material flowing in the sintering pipe 3, so that the material can be sintered within a relatively constant temperature range, thereby improving the sintering quality.

[0079] As shown in Figure 2, the heating mechanism 4 includes a heating tube 41 that traverses the reaction zone. Optionally, the heating tube 41 extends horizontally, that is, it is perpendicular to the sintering pipe 3. Optionally, the heating tube 41 is an electric heating tube.

[0080] When the sintering pipes 3 are arranged in rows and columns within the material sintering chamber 10, the heating pipes 41 are also arranged in rows and columns, with heating pipes 41 provided on both sides of each row or column of the sintering pipes 3, i.e., arranged in a "well" shape around the sintering pipes 3. In one embodiment, since the height of the sintering pipes 3 in the vertical direction is relatively large, multiple sets of sintering pipes 3 are provided in the vertical direction to improve heating uniformity.

[0081] In order to air-cool the material entering the buffer zone 13, as shown in Figure 2, an air jacket is formed at the side wall plate of the vertical furnace body 1 that forms the buffer zone 13. A cooling air inlet 15 and a hot air outlet 16 are provided on the outer side of the side wall plate. Cooling air at a lower temperature can be introduced into the air jacket through the cooling air inlet 15. After the cooling air exchanges heat with the material in the sintering tube, the temperature of the material in the sintering tube 3 decreases, the temperature of the cooling air increases and becomes hot air, and the hot air is discharged from the air jacket through the hot air outlet 16.

[0082] Optionally, multiple cooling air inlets 15 are provided, and the multiple cooling air inlets 15 are spaced apart around the circumference of the vertical furnace body 1. Optionally, multiple hot air exhaust ports 16 are provided, and the multiple hot air exhaust ports 16 are spaced apart around the circumference of the vertical furnace body 1. Optionally, the cooling air inlets 15 are located above the hot air exhaust ports 16, and the cooling air flows downward, which helps to improve the smoothness of the cooling airflow formed by the cooling air.

[0083] The material flowing out of the sintering pipe 3 enters the cooling zone 14, and the cooling zone 14 is used to realize secondary cooling of the material. In order to improve the cooling speed, as shown in FIG. 2, the vertical roasting furnace 100 further comprises a cooling mechanism 6, which is arranged to accelerate the cooling speed of the material entering the cooling zone 14. Optionally, the cooling zone 14 is funnel-shaped.

[0084] In some embodiments, the cooling mechanism 6 comprises a cooling coil 61 arranged around the cooling zone 14, the cooling coil 61 having a cooling medium inlet 62 and a cooling medium outlet 63, and a lower-temperature cooling medium enters the cooling coil 61 from the cooling medium inlet 62 and is discharged from the cooling medium outlet 63 after heat exchange with the material entering the cooling zone 14. Optionally, the cooling medium is cooling water. Optionally, the cooling coil 61 is a copper pipe.

[0085] In order to improve the cooling effect of the material, as shown in FIG. 2, a material dispersing mechanism 7 is arranged in the cooling zone 14, which is arranged below the sintering pipe 3 and is arranged to blow the material flowing out of the bottom end of the sintering pipe 3 onto the side wall of the vertical furnace body 1, so as to reduce the distance between the material and the cooling mechanism 6, thereby achieving the purpose of improving the cooling rate of the material.

[0086] In this embodiment, the material dispersing mechanism 7 comprises a blowing pipe 71, which comprises a blowing part 711 arranged circumferentially below the sintering pipe 3, and a plurality of gas outlets 72 are arranged on the blowing part 711 and face the sintering pipe 3. The blowing pipe 71 has an air inlet, and an external gas source is communicated with the air inlet. The gas in the external gas source enters the blowing pipe 71 through the air inlet and is blown out toward the sintering pipe 3 when flowing to the gas outlet 72, so as to blow the material falling from the bottom of the sintering pipe 3 onto the side wall of the vertical furnace body 1 and make close contact with the cooling mechanism 6. Optionally, the external gas source is a nitrogen source, and the gas used to blow the material is nitrogen; the shape of the blowing pipe 71 and the number and distribution of the gas outlets 72 can be flexibly adjusted according to requirements, as long as the material can be blown away.

[0087] In some embodiments, as shown in FIG. 14, when the sintering pipe 3 is arranged in four and arranged in two rows and two columns in the horizontal plane, the blowing pipe 71 comprises four fan-shaped blowing parts 711, and each sintering pipe 3 is arranged inside one blowing part 711. Exemplarily, the blowing pipe 71 comprises an inner ring pipe 712 and an outer ring pipe 713 arranged concentrically, and four communication branch pipes 714 are communicated between the inner ring pipe 712 and the outer ring pipe 713. In other embodiments, when the sintering pipe 3 is of other quantities, the number of the communication branch pipes 714 can be flexibly adjusted according to requirements, or the shape of the blowing pipe 71 can also be flexibly adjusted according to requirements, as long as the material can be blown away.

[0088] As shown in FIG. 2, the vertical roasting furnace 100 further comprises a rotary valve 8, a discharge port is provided at the lowest part of the cooling zone 14 of the vertical furnace body 1, and the rotary valve 8 is arranged at the discharge port, so that the discharge speed of the material at the discharge port can be adjusted through the rotary valve 8.

[0089] Optionally, the surface of the vertical furnace body 1 is provided with a detection port 18 for detecting the atmosphere and furnace pressure in the reaction zone and a thermocouple 19 for detecting the temperature in the reaction zone, so as to monitor whether the sintering environment in the sintering pipeline 3 is normal in real time.

[0090] Optionally, the sintering pipeline 3 is a stainless steel cylinder, the vertical furnace body 1 is a carbon steel cylinder, and a material sintering cavity 10 is formed between the stainless steel cylinder and the carbon steel cylinder. The heating mechanism 4 is arranged around the sintering pipeline 3, and the heat insulation cotton 17 is arranged around the heating mechanism 4. In this way, the heating mechanism 4 provides heat for the material flowing in the sintering pipeline 3, so that the material can be sintered in a relatively constant temperature range, meeting the sintering requirements; and the heat insulation cotton 17 is used to reduce the heat loss of the sintering pipeline 3.

[0091] Embodiment Two

[0092] The embodiment provides a vertical roasting furnace 100, which comprises a vertical furnace body 1, a feeding mechanism 2, a sintering pipeline 3, a heating mechanism 4, a guide 5, a cooling mechanism 6, a material dispersing mechanism 7 and a rotary valve 8.

[0093] The vertical furnace body 1 has a material sintering cavity 10, the material sintering cavity 10 comprises, from top to bottom, a flash zone 11, a constant temperature zone 12, a buffer zone 13 and a cooling zone 14; the feeding mechanism 2 is in communication with the material sintering cavity 10 and is arranged to input the material into the flash zone 11, and the material can flow downwards through the constant temperature zone 12, the buffer zone 13 and the cooling zone 14 under the action of gravity; the sintering pipeline 3 passes through the four reaction zones of the material sintering cavity 10 in the vertical direction; the heating mechanism 4 is arranged around the sintering pipeline 3 and is arranged to heat the material; the guide 5 guides the material entering the flash zone 11; the cooling mechanism 6 is arranged to accelerate the cooling speed of the material entering the cooling zone 14; the material dispersing mechanism 7 is arranged below the sintering pipeline 3 and is arranged to blow the material flowing out of the bottom opening of the sintering pipeline 3 to the side wall of the vertical furnace body 1; and the rotary valve 8 can adjust the discharge speed of the material at the discharge port.

[0094] The vertical roasting furnace 100 is basically the same as the vertical roasting furnace 100 in Embodiment One, and the difference lies only in the heating mechanism 4.

[0095] In the embodiment, the heating mechanism 4 comprises a heating plate 42 arranged at the furnace wall of the vertical furnace body 1. According to the shape of the vertical furnace body 1 and the sintering pipeline 3, the shape of the heating plate 42 can be flexibly adjusted.

[0096] Optionally, the heating plate 42 is an electric heating plate 42, and the electric resistance wire for heating on the electric heating plate 42 is arranged in a serpentine shape. It should be noted that the heating plate 42 can be arranged on the inner wall surface of the side wall plate of the vertical furnace body 1, or can be arranged on the outer wall surface of the sintering pipeline 3, as shown in FIG. 5.

[0097] In some embodiments, the heating plate 42 can be arranged in multiple layers according to requirements in the thickness direction of the side wall of the vertical furnace body 1, so as to improve the heating efficiency.

[0098] Embodiment Three

[0099] The embodiment provides a vertical roasting furnace 100, which comprises a vertical furnace body 1, a feeding mechanism 2, a sintering pipeline 3, a heating mechanism 4, a material guiding member 5, a cooling mechanism 6, a material dispersing mechanism 7 and a rotary valve 8.

[0100] The vertical furnace body 1 has a material sintering cavity 10, the material sintering cavity 10 comprises a flash zone 11, a constant temperature zone 12, a buffer zone 13 and a cooling zone 14 which are sequentially communicated from top to bottom; the feeding mechanism 2 is communicated with the material sintering cavity 10 and is arranged to input material into the flash zone 11, and the material can flow downwards to sequentially pass through the constant temperature zone 12, the buffer zone 13 and the cooling zone 14 under the action of gravity; the sintering pipeline 3 sequentially passes through the four reaction zones of the material sintering cavity 10 in the vertical direction; the heating mechanism 4 is arranged around the sintering pipeline 3 and is arranged to heat the material; the cooling mechanism 6 is arranged to accelerate the cooling speed of the material entering the cooling zone 14; the material dispersing mechanism 7 is arranged below the sintering pipeline 3 and is arranged to blow the material flowing out of the bottom opening of the sintering pipeline 3 to the side wall of the vertical furnace body 1; and the rotary valve 8 can adjust the discharging speed of the material at the discharging port.

[0101] The vertical roasting furnace 100 is basically the same as the vertical roasting furnace 100 in the embodiment one in structure, and the difference is only that the heating mechanism 4 is different.

[0102] In the embodiment, as shown in FIG. 6, the heating mechanism 4 is a hot air mechanism, which comprises a fan 43, a hot air pipe 44 and a heating member 45, the fan 43 is arranged to introduce air into the hot air pipe 44, the hot air pipe 44 is communicated with the material sintering cavity 10, the hot air pipe 44 has an air inlet end and an air outlet end, an air inlet and an air outlet are arranged on the vertical furnace body 1, the air inlet end of the hot air pipe 44 is communicated with the air outlet, the air outlet end of the hot air pipe 44 is communicated with the air inlet, and the heating member 45 is arranged in the hot air pipe 44.

[0103] The air heated by the heating member 45 flows to the sintering pipeline 3 through the air inlet, and the air after heat exchange with the sintering pipeline 3 flows back to the hot air pipe 44 through the air outlet, and a one-way valve 47 is arranged in the hot air pipe 44, so that the air flows in the hot air pipe 44 in one direction.

[0104] Optionally, the heating member 45 is an electric heater. In some embodiments, the heating member 45 can also adopt other structures capable of having a heating function.

[0105] In some embodiments, the heating mechanism 4 further comprises a filter 46, which is arranged at the communication between the fan 43 and the heat pipe 44, and is arranged to filter air.

[0106] Embodiment Four:

[0107] This embodiment provides a vertical roasting furnace 100, which comprises a vertical furnace body 1, a feeding mechanism 2, a sintering pipeline 3, a heating mechanism 4, a material guiding member 5, a cooling mechanism 6, a material dispersing mechanism 7 and a rotary valve 8.

[0108] The vertical furnace body 1 has a material sintering cavity 10, which comprises a flash zone 11, a constant temperature zone 12, a buffer zone 13 and a cooling zone 14, which are sequentially communicated from top to bottom; the feeding mechanism 2 is communicated with the material sintering cavity 10, and is arranged to input material into the flash zone 11, which can flow downwards through the constant temperature zone 12, the buffer zone 13 and the cooling zone 14 under the action of gravity; the sintering pipeline 3 sequentially passes through the four reaction zones of the material sintering cavity 10 along the vertical direction; the heating mechanism 4 is arranged around the sintering pipeline 3, and is arranged to heat the material; the cooling mechanism 6 is arranged to accelerate the cooling speed of the material entering the cooling zone 14; the material dispersing mechanism 7 is arranged below the sintering pipeline 3, and is arranged to blow the material flowing out of the bottom end opening of the sintering pipeline 3 to the sidewall of the vertical furnace body 1; the rotary valve 8 can adjust the discharging speed of the material at the discharging port.

[0109] The vertical roasting furnace 100 is basically the same as the vertical roasting furnace 100 in Embodiment One, and the difference is only that the cooling mechanism 6 is different.

[0110] In this embodiment, as shown in FIG. 7, the cooling mechanism 6 is a cooling cavity 64 arranged in the furnace wall opposite to the cooling zone 14 of the vertical furnace body 1, and the furnace wall is provided with a cooling water inlet 65 and a cooling water outlet 66 communicated with the cooling cavity 64.

[0111] The cooling medium with lower temperature enters the cooling cavity 64 from the cooling water inlet 65, and after heat exchange with the material entering the cooling zone 14, the cooling medium after heat exchange is discharged from the cooling water outlet 66. Optionally, the cooling medium is cooling water.

[0112] In some embodiments, the cooling water inlet 65 is arranged below the cooling water outlet 66 to slow down the flow rate of the cooling medium, prolong the cooling time and improve the cooling effect.

[0113] Embodiment Five:

[0114] The embodiment provides a vertical roasting furnace 100, which comprises a vertical furnace body 1, a feeding mechanism 2, a sintering pipeline 3, a heating mechanism 4, a material guiding member 5, a cooling mechanism 6, a material dispersing mechanism 7 and a rotary valve 8.

[0115] The vertical furnace body 1 has a material sintering cavity 10, which comprises a flash zone 11, a constant temperature zone 12, a buffer zone 13 and a cooling zone 14 which are sequentially communicated from top to bottom; the feeding mechanism 2 is communicated with the material sintering cavity 10 and is arranged to input material into the flash zone 11, and the material can flow downwards through the constant temperature zone 12, the buffer zone 13 and the cooling zone 14 under the action of gravity; the sintering pipeline 3 sequentially passes through the four reaction zones of the material sintering cavity 10 in the vertical direction; the heating mechanism 4 is arranged around the sintering pipeline 3 and is arranged to heat the material; the material guiding member 5 guides the material entering the flash zone 11; the cooling mechanism 6 is arranged to accelerate the cooling speed of the material entering the cooling zone 14; the material dispersing mechanism 7 is arranged below the sintering pipeline 3 and is arranged to blow the material flowing out of the bottom end of the sintering pipeline 3 to the side wall of the vertical furnace body 1; and the rotary valve 8 can adjust the discharging speed of the material at the discharging port.

[0116] The vertical roasting furnace 100 is basically the same as the vertical roasting furnace 100 in the first embodiment in structure, and the difference is only that the material dispersing mechanism 7 is different.

[0117] In the embodiment, as shown in FIG. 8, the material dispersing mechanism 7 comprises a material dispersing plate 73, which is arranged below the sintering pipeline 3 and is fixed on the side wall of the vertical furnace body 1. Exemplarily, as shown in FIGS. 15 and 16, the material dispersing plate 73 comprises a conical part 74 and a mesh part 75, the mesh part 75 is arranged around the circumference of the conical part 74, and the material falling on the conical part 74 can flow along the side wall surface thereof to the mesh part 75, so as to realize the dispersion of the material.

[0118] In some embodiments, the material dispersing plate 73 is provided with one, the number of the conical parts 74 is the same as that of the sintering pipelines 3, and the top end of the conical part 74 of the material dispersing plate 73 is opposite to the outlet of the sintering pipeline 3.

[0119] In other embodiments, the material dispersing plate 73 is provided with two and is arranged in the vertical direction, the top end of the conical part 74 of the material dispersing plate 73 arranged at the top layer is opposite to the outlet of the sintering pipeline 3, the mesh part 75 of the material dispersing plate 73 arranged at the top layer is arranged around the bottom end of the conical part 74, and the conical parts 74 of the two layers of material dispersing plates 73 arranged in the vertical direction are arranged in a staggered manner. In this way, the dispersion effect of the material can be improved. In other embodiments, the number of the material dispersing plates 73 can also be three or more according to requirements, and is not limited to one and two.

[0120] In some embodiments, the bulk material plate 73 is connected in the vertical furnace body 1 by an elastic mechanism, for example, the elastic mechanism includes a support column fixed in the vertical furnace body 1 and a spring sleeved on the support column, and the bulk material plate 73 is pressed against the spring. In this way, when the material falls on the bulk material plate 73, the bulk material plate 73 can be shaken to make the material more easily fall through the mesh part 75.

[0121] In some embodiments, the vertical roasting furnace 100 further includes a vibration air hammer 81 installed outside the vertical furnace body 1, which can drive the material in the cooling zone 14 to vibrate to improve the cooling effect and the smoothness of the material falling.

[0122] In some embodiments, the type of the heating mechanism 4 is not limited to one kind, and at least two of the embodiments one to three can be provided according to the needs; the type of the cooling mechanism 6 is not limited to one kind, and two of the embodiments one and four can be provided according to the needs; the type of the material dispersion mechanism 7 is not limited to one kind, and two of the embodiments one and five can be provided according to the needs.

[0123] Embodiment six:

[0124] On the basis of the above-mentioned embodiments one, two, three, four or five, it is found that during the process of the material in a fluid state sequentially passing through a plurality of reaction zones for dynamic sintering in the vertical furnace body 1, the static pressure of the material is large, which is easy to cause caking and even blockage, resulting in uneven heating of the material and affecting the sintering quality.

[0125] To this end, the present embodiment proposes a vertical roasting furnace 100, which includes a vertical furnace body 1, a feeding mechanism 2, a sintering pipeline 3, a heating mechanism 4, a material guide 5, a cooling mechanism 6, a material dispersion mechanism 7, a rotary valve 8 and a material turning mechanism 9.

[0126] The vertical furnace body 1 has a material sintering cavity 10, which includes a flash zone 11, a constant temperature zone 12, a buffer zone 13 and a cooling zone 14 sequentially communicated from top to bottom; the feeding mechanism 2 is communicated with the material sintering cavity 10 and is arranged to input the material into the flash zone 11, and the material can flow downward under the action of gravity to sequentially pass through the constant temperature zone 12, the buffer zone 13 and the cooling zone 14; the sintering pipeline 3 passes through the four reaction zones of the material sintering cavity 10 in the vertical direction; the heating mechanism 4 is arranged around the sintering pipeline 3 and is arranged to heat the material; the material guide 5 guides the material entering the flash zone 11; the cooling mechanism 6 is arranged to accelerate the cooling speed of the material entering the cooling zone 14; the material dispersion mechanism 7 is arranged below the sintering pipeline 3 and is arranged to blow the material flowing out from the bottom opening of the sintering pipeline 3 to the side wall of the vertical furnace body 1; the rotary valve 8 can adjust the discharging speed of the material at the discharging port.

[0127] As shown in FIG. 9, a plurality of material turning mechanisms 9 are distributed on the sintering pipeline 3 at intervals, each material turning mechanism 9 includes a plurality of turning plates 91, each turning plate 91 can be switched between a blocking state and an open state; in the blocking state, all turning plates 91 in each material turning mechanism 9 are spliced with each other to close the cross section of the sintering pipeline 3, so as to divide the sintering pipeline 3 into a plurality of sub-zones corresponding to the reaction zones; in the open state, all turning plates 91 in each material turning mechanism 9 are not in contact with each other, so that the adjacent sub-zones are communicated; all turning plates 91 in each material turning mechanism 9 will turn and scatter the material at the bottom of the corresponding sub-zone during the switching between the blocking state and the open state.

[0128] In some embodiments, in the blocking state, each turning plate 91 is in a horizontal position or close to the horizontal position, thereby blocking the material from falling; in the open state, each turning plate 91 is in a vertical position, and the material can freely fall into the next sub-zone or flow out of the sintering pipeline 3, so that by controlling the action of the turning plates 91 of each material turning mechanism 9, the function of controlling the material in each sub-zone can be realized; and when the turning plates 91 turn, the material can be turned and stirred, and the caked material can be scattered, thereby avoiding the clogging situation. Thus, the material is scattered by the turning and controlling actions of the plurality of material turning mechanisms 9 when flowing downward in the sintering pipeline 3, thereby avoiding the caking and clogging of the material, reducing the influence of static pressure, and making the material heated more uniformly in the furnace body, thereby ensuring the sintering quality.

[0129] In some embodiments, as shown in FIGS. 1, 10 and 11, the material turning mechanism 9 further includes a plurality of transmission plates 92, a driving plate 93 and a turning cylinder 94 arranged outside the vertical furnace body 1, each turning plate 91 corresponds to one transmission plate 92, the first end of the transmission plate 92 is fixed with the rotating shaft of the corresponding turning plate 91, the second end of the transmission plate 92 is rotationally connected with the driving plate 93, the output end of the turning cylinder 94 is rotationally connected with the driving plate 93, and the turning cylinder 94 is arranged to drive all the turning plates 91 of the material turning mechanism 9 to rotate synchronously. Thus, by driving the driving plate 93 through the turning cylinder 94 to control the rotation of each transmission plate 92, and then control the synchronous rotation of each turning plate 91, the switching between the blocking state and the open state is realized.

[0130] Optionally, the edge of the turning plate 91 is provided with a stepped surface 911, and the stepped surfaces 911 of the adjacent two turning plates 91 are spliced with each other to form a flat plate surface in the blocking state, as shown in FIG. 11. In some embodiments, the inner wall of the sintering pipeline 3 is provided with a stop block 33 limiting the edges of the turning plates 91 on both sides. Thus, the sealing performance of the turning plates 91 and the sintering pipeline 3 in the blocking state is ensured, and the shape and number of the turning plates 91 are arranged according to the cross-sectional shape and cross-sectional area of the sintering pipeline 3.

[0131] In some embodiments, the sintering pipe 3 is segmented into multiple sub-zones, and an adapter frame 34 is arranged between two adjacent segments of the sintering pipe 3, and the turnover mechanism 9 is arranged on the adapter frame 34.

[0132] Embodiment Seven

[0133] The embodiment provides a vertical roasting furnace 100, which comprises a vertical furnace body 1, a feeding mechanism 2, a sintering pipe 3, a heating mechanism 4, a material guide 5, a cooling mechanism 6, a material dispersion mechanism 7 and a rotary valve 8.

[0134] The vertical furnace body 1 has a material sintering cavity 10, which comprises a flash zone 11, a constant temperature zone 12, a buffer zone 13 and a cooling zone 14 which are sequentially connected from top to bottom; the feeding mechanism 2 is in communication with the material sintering cavity 10 and is arranged to input material into the flash zone 11, and the material can flow downward through the constant temperature zone 12, the buffer zone 13 and the cooling zone 14 under the action of gravity; the sintering pipe 3 sequentially passes through the four reaction zones of the material sintering cavity 10 in the vertical direction; the heating mechanism 4 is arranged around the sintering pipe 3 and is arranged to heat the material; the cooling mechanism 6 is arranged to accelerate the cooling speed of the material entering the cooling zone 14; the material dispersion mechanism 7 is arranged below the sintering pipe 3 and is arranged to blow the material flowing out of the bottom end opening of the sintering pipe 3 to the side wall of the vertical furnace body 1; and the rotary valve 8 can adjust the discharging speed of the material at the discharging port.

[0135] The multiple turnover mechanisms 9 are distributed on the sintering pipe 3 in an up-down interval manner, each turnover mechanism 9 comprises multiple turnover plates 91, and each turnover plate 91 can be switched between a blocking state and an open state; in the blocking state, all the turnover plates 91 in each turnover mechanism 9 are spliced with each other to close the cross section of the sintering pipe 3, so as to divide the sintering pipe 3 into multiple sub-zones which correspond to the reaction zones one by one; in the open state, all the turnover plates 91 in each turnover mechanism 9 are not in contact with each other, so that the adjacent sub-zones are in communication; and all the turnover plates 91 in each turnover mechanism 9 will turn and scatter the material at the bottom of the corresponding sub-zone in the switching process between the blocking state and the open state.

[0136] The vertical roasting furnace 100 is basically the same as the vertical roasting furnace 100 in Embodiment Six in structure, and the difference is only in the splicing form of the turnover plates 91.

[0137] In the embodiment, the edges of the two adjacent turnover plates 91 overlap each other in the partition state, and the turnover plates 91 can also achieve the material control function of partitioning or opening the material sintering cavity 10, only by adaptively adjusting the rotation control of each turnover plate 91, as shown in FIG. 12. In some embodiments, the inner wall of the sintering pipeline 3 is provided with a stop block 33 which limits the edges of the turnover plates 91 on both sides. Thus, the cooperation of the turnover plates 91 and the sintering pipeline 3 in the partition state is guaranteed, and the shape and number of the turnover plates 91 are set according to the cross-sectional shape and area of the sintering pipeline 3.

[0138] Embodiment eight:

[0139] Based on the above-mentioned embodiments one to seven, as shown in FIG. 13, the embodiment provides a battery material processing equipment, which comprises a spray dryer 200 and the above-mentioned vertical roaster 100, the spray dryer 200 is arranged to dry the material, and the discharge pipe 210 of the spray dryer 200 is communicated with the vertical roaster 100.

[0140] The battery material processing equipment uses the above-mentioned vertical roaster 100, which not only improves the compactness of the battery material processing equipment, reduces the floor area of the battery material processing equipment, and reduces the manufacturing cost of the battery material processing equipment, but also improves the sintering effect of the material and reduces the energy consumption of the sintered material.

[0141] Optionally, the battery material processing equipment further comprises a bag-type dust collector 300, which is arranged to perform dust removal operation on the material. The spray dryer 200 is used to dry the material, after the drying of the material is completed, the material is directly input to the bag-type dust collector 300 through the discharge pipe 210, and after the dust removal is completed, the material flows downward to the feeding mechanism 2, and then the material enters the sintering pipeline 3 of the vertical furnace body 1 to complete sintering. It should be noted that the structure of the spray dryer 200 and the drying process of the material can refer to related technologies.

Claims

1. A vertical roasting furnace, comprising: a vertical furnace body (1) having a material sintering cavity (10) therein, the material sintering cavity (10) comprising a plurality of reaction zones sequentially communicating from top to bottom, at least part of the reaction zones having different reaction conditions; a feeding mechanism (2) communicating with the material sintering cavity (10) and configured to input material to be sintered into the reaction zone at the top, the material being capable of flowing downward to the reaction zone at the bottom under the action of gravity; at least one sintering pipeline (3) arranged in at least one of the reaction zones of the material sintering cavity (10) in the vertical direction, the material flowing in the sintering pipeline (3) at an adjustable flow rate; a heating mechanism (4) arranged close to the sintering pipeline (3) and configured to heat the material.

2. The shaft kiln according to claim 1, wherein, The sintering pipeline (3) is provided with a plurality of turnover mechanisms (9) spaced apart from each other in the vertical direction, each of the turnover mechanisms (9) comprising a plurality of turnover plates (91), each of the turnover plates (91) being switchable between a blocking state and an open state. In the blocking state, all the turnover plates (91) in each of the turnover mechanisms (9) are jointed with each other to close the cross section of the sintering pipeline (3), thereby dividing the sintering pipeline (3) into a plurality of sub-zones corresponding to the reaction zones one by one. In the open state, all the turnover plates (91) in each of the turnover mechanisms (9) are not in contact with each other, so that the adjacent sub-zones are in communication. All the turnover plates (91) in each of the turnover mechanisms (9) turn and scatter the material at the bottom of the corresponding sub-zone during the switching between the blocking state and the open state.

3. The shaft-type roaster according to claim 2, wherein Each of the turnover mechanisms (9) further comprises a plurality of transmission plates (92), a driving plate (93) and a turnover cylinder (94) arranged outside the vertical furnace body (1), each of the turnover plates (91) corresponding to one of the transmission plates (92), the first end of the transmission plate (92) being fixed with the rotation shaft of the corresponding turnover plate (91), the second end of the transmission plate (92) being rotatably connected with the driving plate (93), the output end of the turnover cylinder (94) being rotatably connected with the driving plate (93), the turnover cylinder (94) being configured to drive all the turnover plates (91) in each of the turnover mechanisms (9) to rotate synchronously.

4. The shaft-type roaster according to claim 2, wherein The edge of the turnover plate (91) is provided with a stepped surface (911), the stepped surfaces (911) of the adjacent two turnover plates (91) being jointed with each other to form a flat plate surface in the blocking state.

5. The shaft-type roaster according to claim 2, wherein The edges of the adjacent two turnover plates (91) overlap with each other in the blocking state.

6. The shaft kiln according to claim 4 or 5, wherein The inner wall of the sintering pipeline (3) is provided with a stop block (33) limiting the edges of the turnover plates (91) on both sides.

7. The shaft-type roasting furnace according to claim 2, wherein The sintering pipeline (3) is designed in segments according to the sub-zones, an adapter frame (34) being arranged between the adjacent two segments of the sintering pipeline (3), the turnover mechanism (9) being arranged on the adapter frame (34).

8. The shaft-type roaster according to claim 1, wherein The plurality of reaction zones include, from top to bottom, a flash zone (11), a constant temperature zone (12), a buffer zone (13) and a cooling zone (14), the feeding mechanism (2) is communicated with the flash zone (11), the flash zone (11) is arranged to heat the material, the constant temperature zone (12) is arranged to heat-insulate the material, the heating mechanism (4) is located in the constant temperature zone (12), the buffer zone (13) is arranged to initially cool the material, and the cooling zone (14) is arranged to cool the material again.

9. The shaft-type roaster according to claim 8, wherein The top of the sintering pipeline (3) extends to the constant temperature zone (12), and the bottom of the sintering pipeline (3) extends to the buffer zone (13).

10. The shaft-type roaster according to claim 9, wherein The sintering pipeline (3) includes a first pipe section (31) and a second pipe section (32) which are communicated in a stepped manner, the first pipe section (31) has a cross-sectional size larger than that of the second pipe section (32), the first pipe section (31) is located in the constant temperature zone (12), and the second pipe section (32) is located in the buffer zone (13).

11. The shaft-type roaster according to claim 1, wherein The reaction zone includes a flash zone (11) located at the top of the material sintering cavity (10), the flash zone (11) is provided with a material guide (5), the material guide (5) has a large opening end and at least one small opening end, the large opening end is opposite to the discharge port of the feeding mechanism (2), and the small opening end is communicated with the top of the sintering pipeline (3) one by one.

12. The shaft kiln as claimed in claim 1, wherein, The heating mechanism (4) includes at least one of the following: The heating mechanism (4) includes a heating pipe (41) which transversely passes through the reaction zone; or The heating mechanism (4) includes a heating plate (42) arranged at the furnace wall of the vertical furnace body (1); or The heating mechanism (4) is a hot air mechanism, the hot air mechanism includes a fan (43), a hot air pipe (44) and a heating element (45), the fan (43) is arranged to introduce air into the hot air pipe (44), the hot air pipe (44) is communicated with the material sintering cavity (10), the heating element (45) is arranged in the hot air pipe (44), and the air heated by the heating element (45) flows to the sintering pipeline (3).

13. The shaft kiln as claimed in claim 1, wherein, The reaction zone includes a cooling zone (14) located at the bottom end of the material sintering cavity (10), and the vertical roasting furnace (100) further includes a cooling mechanism (6), the cooling mechanism (6) includes a cooling coil (61) arranged around the cooling zone (14), and a cooling medium flows in the cooling coil (61); Alternatively, a cooling cavity (64) is arranged in the furnace wall of the vertical furnace body (1) opposite to the cooling zone (14), and a cooling medium flows in the cooling cavity (64).

14. The shaft-type roaster according to claim 1, wherein The reaction zone includes a cooling zone (14) located at the bottom end of the material sintering cavity (10), and the cooling zone (14) is provided with a material dispersing mechanism (7). The material dispersion mechanism (7) comprises a blowing pipe (71), the blowing pipe (71) comprises a jet part (711) which is located below the sintering pipe (3) and is distributed in a circumferential direction, a plurality of gas outlets (72) are arranged on the jet part (711) and face the sintering pipe (3); Alternatively, the material dispersion mechanism (7) comprises at least one material scattering plate (73), the material scattering plate (73) is located below the sintering pipe (3), the material scattering plate (73) comprises a conical part (74) and a mesh part (75), the top end of the conical part (74) of the material scattering plate (73) located at the top layer is arranged opposite to the outlet of the sintering pipe (3), the mesh part (75) of the material scattering plate (73) located at the top layer is arranged around the bottom end of the conical part (74), and the conical parts (74) of two layers of material scattering plates (73) which are arranged in a vertical direction are arranged in a staggered manner.

15. The shaft-type roaster according to claim 1, wherein The surface of the vertical furnace body (1) is provided with a detection port (18) for detecting the atmosphere and furnace pressure in the reaction zone and a thermocouple (19) for detecting the temperature in the reaction zone.

16. The shaft kiln as claimed in claim 1, wherein, The sintering pipe (3) is a stainless steel cylinder, the vertical furnace body (1) is a carbon steel cylinder, and the material sintering cavity (10) is formed between the stainless steel cylinder and the carbon steel cylinder, the material sintering cavity (10) is provided with a heating mechanism (4) arranged around the sintering pipe (3) and heat preservation cotton (17) arranged around the heating mechanism (4).

17. A battery material processing equipment, comprising a spray dryer (200) and the vertical calcination furnace (100) according to any one of claims 1-16, the spray dryer (200) is arranged to dry the material, and a discharge pipe (210) of the spray dryer (200) is in communication with the vertical calcination furnace (100).

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