CN112246832A - Battery material processing system - Google Patents
Battery material processing system Download PDFInfo
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- CN112246832A CN112246832A CN202011040417.2A CN202011040417A CN112246832A CN 112246832 A CN112246832 A CN 112246832A CN 202011040417 A CN202011040417 A CN 202011040417A CN 112246832 A CN112246832 A CN 112246832A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE
- B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE
- B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
- B09B3/40—Destroying solid waste or transforming solid waste into something useful or harmless involving thermal treatment, e.g. evaporation
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/54—Reclaiming serviceable parts of waste accumulators
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/84—Recycling of batteries or fuel cells
Abstract
The invention discloses a battery material processing system, which comprises a feeding device and a pyrolysis device, wherein the pyrolysis device comprises a rotary screen pyrolysis furnace and a driving device, the rotary screen pyrolysis furnace comprises an outer furnace body containing a furnace chamber, the outer furnace body comprises a furnace head and a furnace tail, an inner rotary screen is arranged in the furnace chamber, the inner rotary screen is connected with the furnace head and the furnace tail of the outer furnace body, and the driving device is used for driving the inner rotary screen to rotate; the feeding device is connected with a furnace end of the rotary screen pyrolysis furnace and is used for feeding materials into the inner rotary screen; the treatment system also comprises a heat source circulating system, wherein the heat source circulating system comprises an air inlet and distribution device, and the air inlet and distribution device is arranged in the furnace chamber between the outer furnace body and the inner rotary screen and is used for supplying hot inert gas to the furnace chamber. The scheme of the invention can lead the material to be directly contacted with the hot gas, has high heat exchange efficiency and uniform heating, does not generate the phenomenon of local heat accumulation and avoids the occurrence of thermite reaction.
Description
Technical Field
The present disclosure relates to processing systems, and more particularly to a battery material processing system.
Background
Compared with lead-acid batteries, nickel-cadmium batteries and nickel-hydrogen batteries, the lithium ion batteries have the advantages of high energy density, long cycle life, small thermal self-discharge, no memory effect, small environmental pollution and the like. With the rapid development of modern society, the problems of energy shortage and environmental pollution become more serious day by day, and the use demand of lithium ion batteries in electric vehicles, hybrid electric vehicles, electric bicycles, solar and wind energy storage and conversion, mobile electric tools, medium-power household appliances and the like, which require high power density and high energy density power sources, is increasingly urgent.
The waste lithium ion battery contains a large amount of high-value metals and has high treatment value. The waste lithium ion battery mainly comprises an anode, a cathode, electrolyte, a diaphragm and a shell plastic fastener. The diaphragm and the shell can be separated through manual separation, and the positive plate, the negative plate and the electrolyte are difficult points of processing of waste lithium ion batteries, particularly the positive plate and the negative plate. The positive plate consists of precious metal powder, aluminum foil and an adhesive; the negative plate consists of copper foil, carbon powder and adhesive. Due to the bonding effect of the adhesive, the positive and negative pole pieces are tightly combined with the noble metal powder or the carbon powder, which is very unfavorable for processing and separation.
In order to solve the problems, the positive and negative electrode plates of the waste lithium ion battery are separated by a pyrolysis method at present, and the positive and negative electrode plates are heated under the condition of oxygen control or no oxygen to remove an adhesive, so that an aluminum foil, a copper foil and a powdery metal active substance are finally obtained. However, in order to avoid oxygen, the processes usually adopt indirect heating by spacers (for example, a heating device is arranged on the outer wall of the pyrolysis equipment), and the thermal efficiency is low; meanwhile, the obtained pyrolysis product, namely the mixture of the aluminum foil, the copper foil and the powdery metal active substance, needs to be additionally added with equipment for further separation, such as crushing, screening and the like; in addition, because aluminum in the waste lithium ion battery is easy to have an aluminothermic reaction with noble metal components when the temperature is too high, even if strict temperature control measures are adopted, the aluminum foil and the ternary powder are easy to have local overtemperature in the pyrolysis process, so that a series of aluminothermic reactions are initiated, and the instant high temperature can burn through a pyrolysis kiln, even cause explosion; in addition, the aluminum foil and the metal powder mixture are easy to generate heat by friction in the conveying process, so that the thermite reaction is initiated.
Disclosure of Invention
The battery material processing system provided by the invention can improve the material processing efficiency, simplify the system structure and avoid the occurrence of thermite reaction.
Based on the purpose, the technical scheme of the invention is as follows:
a battery material processing system comprises a feeding device and a pyrolysis device, and is characterized in that: the pyrolysis device comprises a rotary screen pyrolysis furnace and a driving device, the rotary screen pyrolysis furnace comprises an outer furnace body containing a furnace chamber, the outer furnace body comprises a furnace end, a furnace tail and an inner rotary screen arranged in the furnace chamber, the inner rotary screen is connected with the furnace end and the furnace tail of the outer furnace body, and the driving device is used for driving the inner rotary screen to rotate; the feeding device is connected with a furnace end of the rotary screen pyrolysis furnace and is used for feeding materials into the inner rotary screen; the treatment system also comprises a heat source circulating system, wherein the heat source circulating system comprises an air inlet and distribution device, and the air inlet and distribution device is arranged in the furnace chamber between the outer furnace body and the inner rotary screen and is used for supplying hot inert gas inertia to the furnace chamber.
In order to separate the pyrolyzed materials in the rotary screen pyrolyzing furnace, meshes on the inner rotary screen are axially provided with meshes with the same or different apertures from the furnace head to the furnace tail. In order to collect and discharge the pyrolyzed materials, a discharge hole is arranged on the outer furnace body. In order to better move the material along the axial direction of the inner rotary screen, a kickoff plate is arranged on the inner rotary screen.
In order to ensure that the furnace cavity has rising hot air flow and fluidize the materials in the inner drum sieve, an air inlet and an air outlet are arranged on the outer furnace body, the air outlet is arranged at the upper part of the furnace end, and the air inlet is arranged at the lower part of the furnace tail.
The heat source circulating system further comprises a primary dust remover and a circulating fan, one end of the primary dust remover is connected with the exhaust port, the other end of the primary dust remover is connected with one end of the circulating fan, the other end of the circulating fan is connected with one end of the air inlet, and the other end of the air inlet is connected with the air inlet and distribution device.
In order to maintain a stable pressure in the furnace chamber, the battery material handling system further comprises a partial pressure handling system.
The partial pressure treatment system comprises a line valve, a secondary dust remover, a combustion chamber and a tail gas treatment device, wherein one end of the line valve is connected with the heat source circulation system, the other end of the line valve is connected with one end of the secondary dust remover, the other end of the secondary dust remover is connected with one end of the combustion chamber, and the other end of the combustion chamber is connected with the tail gas treatment device.
In order to ensure the temperature of hot air flow entering the furnace chamber and fully utilize the pyrolyzed combustible gas, a heat exchanger is arranged between the partial pressure treatment system and the heat source circulating system, and the heat exchanger is used for transferring the temperature of the flue gas discharged from the combustion chamber to the inert gas in the heat source circulating system.
In order to prevent the air inlet and distribution device from being blocked by materials, an air cap is arranged on an air distribution hole of the air inlet and distribution device.
Compared with the prior art, the invention has the following beneficial effects:
(1) the materials are directly contacted with hot gas in the rotary screen pyrolysis furnace, so that the heat exchange efficiency and the material treatment efficiency are high;
(2) the pyrolyzed material moves in the airflow, so that the friction between the powder materials is increased, and the separation between the powder materials and the flaky material is facilitated. The materials are sorted through the meshes of the inner screen drum and respectively enter different discharge ports to be collected, so that a redundant separation system is not required to be additionally configured, the overall structure of the treatment system is simplified, and the cost is saved;
(3) the material moves in multiple directions in the rotary screen pyrolysis furnace, is heated uniformly, cannot generate local heat accumulation phenomenon, and avoids thermite reaction.
The above and other objects, advantages and features of the present invention will become more apparent to those skilled in the art from the following detailed description of specific embodiments thereof, which is to be read in connection with the accompanying drawings.
Drawings
FIG. 1 is a schematic diagram of a first embodiment of a battery material processing system according to the present invention;
fig. 2 is a schematic structural diagram of a battery material processing system according to a second embodiment of the present invention.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be practiced in many ways different from those described herein, and it will be apparent to those skilled in the art that similar modifications may be made without departing from the spirit of the invention, and the invention is therefore not limited to the specific embodiments disclosed below.
The processing system is suitable for processing the positive plate, the negative plate and the mixed pole piece after the full battery is crushed.
As shown in fig. 1, the battery material processing system of the present invention includes a feeding device 1 and a pyrolysis device, the pyrolysis device includes a drum screen pyrolysis furnace 2 and a driving device (not shown), the drum screen pyrolysis furnace 2 includes an outer furnace body 21 including a furnace chamber 23, the outer furnace body 21 includes a furnace head (the left end is the furnace head, that is, the feeding end is the furnace head), a furnace tail (the right end is the furnace tail), an inner drum screen 22 disposed in the furnace chamber, the inner drum screen is connected with the furnace head and the furnace tail of the outer furnace body, that is, the inner drum screen can be fixed on the outer furnace body through a shaft, and the driving device drives the shaft to rotate, so as to drive the inner drum screen to rotate. The outer furnace body 21 is kept fixed, and only the inner drum screen drives the inner drum screen to rotate under the action of the driving device; the feeding device 1 is connected with a furnace end of the rotary screen pyrolysis furnace 2 and is used for feeding materials into the inner rotary screen; the treatment system also comprises a heat source circulating system 3, the heat source circulating system comprises an air inlet and distribution device 31, the air inlet and distribution device 31 is arranged in the furnace chamber between the outer furnace body and the inner rotary screen and is used for supplying hot inert gas into the furnace chamber, the hot inert gas enters from meshes of the inner rotary screen, the material is directly contacted with the hot inert gas under the disturbance of the hot inert gas and the rotation of the inner rotary screen, the heat exchange efficiency is high, and the material treatment efficiency is high; meanwhile, the materials move in multiple directions in the inner drum screen, are heated uniformly, prevent local heat accumulation and avoid thermite reaction. In order to reduce the influence of the air inlet and distribution device on falling materials, the air inlet and distribution device is preferably arranged not right below the furnace chamber, namely in the direction of a non-vertical horizontal plane.
Wherein, the materials in the feeding device are crushed to form materials with specified size; the inner drum screen can be formed by processing in various ways, for example: the steel plate is punched and processed, and can also adopt the forms of a steel skeleton and a screen.
In the prior art, in order to further separate the obtained pyrolysis product (namely the mixture of the aluminum foil, the copper foil and the powdery metal active substance), additional equipment such as crushing, screening and the like is required to be added subsequently, so that the system is complex, and meanwhile, the production cost is increased. In the invention, the meshes on the inner drum screen can be provided with meshes with the same or different apertures from the furnace head to the furnace tail along the axial direction (namely the direction from left to right).
The first scheme is as follows: the inner drum screen is provided with meshes with different apertures. The meshes on the inner drum screen are provided with two different apertures along the axial direction from the furnace head to the furnace tail, the aperture on the right side is larger than the aperture on the left side, the small aperture is convenient for the powder material after pyrolysis to pass through, and the large aperture is convenient for the aluminum foil or copper foil to pass through; the large-aperture section is close to the furnace tail, the proportion of the small-aperture section is greater than that of the large-aperture section, and the small-aperture section generally accounts for more than 60 percent of the barrel body of the inner drum screen;
and a discharge port is arranged on the outer furnace body and used for collecting and discharging the pyrolyzed materials. Namely, a discharge port 24 is arranged at the position of the lower part of the outer furnace body corresponding to the small aperture, and a discharge port 25 is arranged at the position corresponding to the large aperture and the tail end of the inner rotary screen. The material after pyrolysis disturbs in the hot gas flow that the cloth wind device that admits air supplied, has increaseed the frictional force between the powder, does benefit to the separation between powder and aluminium foil, the copper foil, the powder falls into discharge gate 24 from the aperture of interior drum sieve, aluminium foil, the copper foil that the size is great fall into discharge gate 25 through the macropore on the interior drum sieve and terminal, the drum sieve pyrolysis oven that adopts this scheme promptly need not additionally to dispose unnecessary piece-rate system again, the overall structure of simplified processing system, and practice thrift the cost. Of course, the holes on the inner drum screen can be provided with more than 3 different hole diameters, and can be adjusted according to the properties and actual requirements of materials.
The second scheme is as follows: the inner drum screen is provided with meshes with the same aperture. As shown in FIG. 2, the holes on the inner drum screen are provided with apertures of the same size from left to right along the axial direction, a discharge port 24 'is arranged at the position of the lower part of the outer furnace body corresponding to the screen cylinder, and a discharge port 25' is arranged at the position corresponding to the tail end of the inner drum screen. The pyrolyzed materials are disturbed in hot air flow supplied by the air inlet and distribution device, so that the friction force between the powder materials is increased, the powder materials are favorably separated from the aluminum foil and the copper foil, the powder materials fall into the discharge hole 24 'from the sieve pores of the inner drum sieve, and the aluminum foil and the copper foil with larger sizes fall into the discharge hole 25' through the tail end of the inner drum sieve. The drum screen pyrolysis furnace in the scheme is adopted, no extra separation system is needed to be additionally arranged, the overall structure of the treatment system is simplified, and the cost is saved. Like parts in fig. 1 and 2 are given the same reference numerals.
In order to prevent the falling powder from blocking the air outlet of the air distribution hole, an air cap is arranged on the air distribution hole of the air inlet and distribution device.
For better carry the stove tail with the material from drum sieve pyrolysis furnace end, the switch board has been arranged on the drum sieve including this scheme, and the switch board can stir the material and move along axial forward, move from a left side to a right side promptly.
As shown in fig. 1 and 2, the outer furnace body 21 is provided with an air inlet 26 and an air outlet 27, the air inlet 26 is located at the lower part of the furnace tail of the outer furnace body, the air outlet is located at the upper part of the furnace head of the outer furnace body, namely, the air inlet and the air outlet are respectively located at the lower part and the upper part of the outer furnace body, hot inert gas is introduced through the air inlet to enter the furnace chamber, and enters the inner drum screen through meshes of the inner drum screen to directly contact with materials, so that a rising hot air flow is formed in the inner drum screen, and the materials in the inner drum screen can be blown up, namely, a; the air inlet flow speed range is adjusted differently according to the material property, thickness and the inner rotary screen capacity.
As shown in fig. 1 and 2, the heat source circulation system 3 further includes a primary dust remover 32 and a circulation fan 33, one end of the primary dust remover 32 is connected to the exhaust port 27 through a pipeline, the other end of the primary dust remover 32 is connected to one end of the circulation fan 33, the other end of the circulation fan 33 is connected to an air inlet and distribution device, and the air inlet and distribution device enters the furnace chamber through the air inlet 26 and is used for supplying hot inert gas, such as nitrogen, argon, etc.; in order to ensure that the adhesives in the positive and negative pole pieces are fully pyrolyzed, the retention time and the specific temperature of the hot inert gas are selected according to the capacity of the rotary screen pyrolysis furnace and the properties of materials, and the temperature range of the hot inert gas is 300-600 ℃. Meanwhile, additional fuel can be introduced into the combustion chamber to serve as a heat source so as to increase the temperature of the flue gas in the combustion chamber.
The primary dust remover 32 is a cyclone dust remover or other dust removing devices suitable for high temperature, the primary dust remover 32 can remove dust in gas discharged from the gas outlet 27, and a discharge hole is arranged at the lower part of the primary dust remover 32 and used for collecting powder entering a heat source circulating system along with hot inert gas through the gas outlet 27; the circulation fan 33 provides a power source for the flow of the hot inert gas in the heat source circulation system; the air inlet and distribution device 31 is positioned in the furnace cavity, hot inert gas is introduced into the furnace cavity, the gas uniformly enters the furnace cavity through the air inlet and distribution device, the local overheating phenomenon cannot be caused, and the air inlet and distribution device not only provides a heat source for materials in the inner drum screen, but also provides power for the movement of the materials. Wherein, the progressive air distribution device can be a uniform distribution plate or a uniform distribution pipe and the like.
In order to ensure that the pyrolysis process is in the anaerobic environment, a sealing structure is arranged at the feed inlet, the discharge outlet, the air inlet and the air outlet of the drum screen pyrolysis furnace, so that air is prevented from entering, and toxic and harmful gas is generated in the pyrolysis furnace, for example: dioxins.
As the adhesive inside the drum screen is pyrolyzed to generate new gas (fluorine-containing organic matter and HF), the pressure in the drum screen can be gradually increased along with the increase of the pyrolysis time. Therefore, in order to keep the pressure inside the trommel stable and treat the gas generated by cracking, the battery material treatment system is further provided with a partial pressure treatment system 4, wherein the partial pressure treatment system 4 comprises a line valve 41, a secondary dust remover 42, a combustion chamber 43 and a tail gas treatment device 44, wherein one end of the line valve 41 is connected with the pipeline of the circulating fan, the other end of the line valve 41 is connected with the secondary dust remover 42, the other end of the secondary dust remover 42 is connected with one end of the combustion chamber 43, and the other end of the combustion chamber is connected with the tail gas treatment device 44. And a heat exchanger 45 is arranged between the partial pressure treatment system and the heat source circulating system and is used for transferring the temperature of the flue gas discharged from the combustion chamber to the inert gas in the heat source circulating system.
The line valve 41 is an automatically controllable valve, such as a solenoid valve; when the gas pressure in the heat source circulating system is higher than the set pressure value, the line valve 41 is automatically opened, the anaerobic circulating gas mixed with pyrolysis gas in the heat source circulating system is introduced into the partial pressure treatment system 4, and the gas enters the secondary dust remover 42 for efficient dust removal; in order to collect and utilize the powder in the mixer, the dust removal efficiency is set to be more than 99%, and the secondary dust remover 42 can be a ceramic dust remover, an electric dust remover and a metal filter screen dust remover; the lower part of the secondary dust remover 42 is provided with a discharge hole for collecting powder entering the partial pressure treatment system through a line valve; the material particle diameter that this discharge gate was collected is minimum, and quantity is also minimum.
The dedusted gas enters a combustion chamber 43, and fluorine-containing organic matters generated by pyrolysis are fully combusted and converted into HF; because the temperature of the flue gas from the combustion chamber is higher, a heat exchanger 45 is arranged on a pipeline between the combustion chamber and the tail gas treatment device, the heat exchanger exchanges heat between the high-temperature flue gas and the oxygen-free gas in the heat source circulating system, and the temperature of the inert gas entering the rotary screen pyrolysis furnace is kept within a preset range, namely the temperature is the heat source of the heat source circulating system; of course, when no oxygen-free gas containing pyrolysis gas enters the partial pressure treatment system, additional fuel can be introduced into the combustion chamber as a heat source to increase the temperature of the flue gas in the combustion chamber. The heat-exchanged flue gas enters a tail gas treatment device 44, and HF in the flue gas is absorbed by adopting methods such as physical adsorption and alkali liquor spraying. In order to facilitate the emission of tail gas, a tail gas emission fan is arranged behind the tail gas treatment device.
The specific battery treatment process is as follows:
taking the treatment of the positive plate of the ternary lithium ion battery as an example, the main components of the positive plate are aluminum foil, PVDF adhesive and active ternary powder (nickel, cobalt, manganese and lithium); wherein, the active ternary powder is tightly bonded on the aluminum foil through an adhesive.
When the system is used for processing the ternary lithium battery positive plate, the positive plate is firstly crushed into a specified size, the positive plate is sent into the inner rotary screen through the feeding device, hot inert gas is introduced into the furnace chamber through the air inlet and distribution device in the heat circulation system, materials in the inner rotary screen are swept by the radially hot inert gas, the driving device drives the inner rotary screen to rotate, and meanwhile the materials move along the axial direction under the action of the material shifting plate on the inner rotary screen.
In the moving process, the positive plate is continuously heated, the adhesive is gradually decomposed, the binding force between the aluminum foil and the ternary powder is gradually weakened, the ternary powder is separated from the aluminum foil under the combined action of gas disturbance, friction between materials and stirring of the shifting plate, and the ternary powder is also gradually separated to become powder and aluminum foil with smaller particle sizes. The powder with smaller particle size enters the discharge port 24 through the mesh with smaller pore size, and the material moves along the axial direction, the lower the part of the material, which is connected with the tail end of the inner drum screen, the lower the content of the ternary powder, until the aluminum foil enters the discharge port 25 through the large mesh and is collected.
And along with the pyrolysis of the sticky substances, the gas pressure in the heat source circulating system gradually rises, when a set value is reached, a line valve in the partial pressure treatment system is opened, redundant gas in the heat source circulating system enters the partial pressure treatment system, the redundant gas enters the combustion chamber through the secondary dust remover to consume fluorine-containing organic matters to generate HF, the flue gas discharged from the combustion chamber enters the heat exchanger to exchange heat, and the flue gas after heat exchange enters the tail gas device to be purified and absorbed.
The gas after pyrolysis is mixed oxygen-free gas of inert gas and pyrolysis gas, and the mixed gas is used as a heat source in a heat source circulating system to heat the material; the anaerobic gas in the heat source circulating system passes through the heat exchanger to increase the temperature of the anaerobic gas, and then the anaerobic gas enters the furnace chamber to directly heat the materials.
The battery material processing system disclosed by the invention can obtain the screened ternary active powder and aluminum foil without adding an additional screening system.
In this document, terms such as "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that an article or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such article or apparatus. Two elements may be connected together directly or through intervening elements.
Thus, it should be understood by those skilled in the art that while exemplary embodiments of the present invention have been illustrated and described in detail herein, many other variations or modifications which are consistent with the principles of the invention may be directly determined or derived from the disclosure of the present invention without departing from the spirit and scope of the invention. Accordingly, the scope of the invention should be understood and interpreted to cover all such other variations or modifications.
Claims (10)
1. A battery material processing system comprises a feeding device and a pyrolysis device, and is characterized in that: the pyrolysis device comprises a rotary screen pyrolysis furnace and a driving device, the rotary screen pyrolysis furnace comprises an outer furnace body containing a furnace chamber, the outer furnace body comprises a furnace end, a furnace tail and an inner rotary screen arranged in the furnace chamber, the inner rotary screen is connected with the furnace end and the furnace tail of the outer furnace body, and the driving device is used for driving the inner rotary screen to rotate; the feeding device is connected with a furnace end of the rotary screen pyrolysis furnace and is used for feeding materials into the inner rotary screen; the treatment system also comprises a heat source circulating system, wherein the heat source circulating system comprises an air inlet and distribution device, and the air inlet and distribution device is arranged in the furnace chamber between the outer furnace body and the inner rotary screen and is used for supplying hot inert gas to the furnace chamber.
2. The battery material handling system of claim 1, wherein the mesh openings on the inner trommel are arranged with mesh openings of the same or different apertures in the axial direction from the head to the tail of the furnace.
3. The battery material handling system of claim 2, wherein a discharge port is provided in the outer furnace body for collecting and discharging pyrolyzed material.
4. The battery material handling system of claim 1, wherein a kickoff plate is disposed on the inner trommel for kicking material along an axial direction of the inner trommel.
5. The battery material handling system of claim 1, wherein the outer housing defines an air inlet and an air outlet, the air outlet being disposed at an upper portion of the burner and the air inlet being disposed at a lower portion of the burner.
6. The battery material handling system of claim 5, wherein the heat source circulation system further comprises a primary dust collector, a circulation fan, one end of the primary dust collector is connected to the exhaust port, the other end of the primary dust collector is connected to one end of the circulation fan, the other end of the circulation fan is connected to one end of the air inlet, and the other end of the air inlet is connected to the air inlet distribution device.
7. The battery material processing system of claim 1, further comprising a partial pressure processing system.
8. The battery material processing system of claim 7, wherein the partial pressure processing system comprises a line valve, a secondary dust collector, a combustion chamber, and a tail gas processing device, wherein one end of the line valve is connected to the heat source circulation system, the other end of the line valve is connected to one end of the secondary dust collector, the other end of the secondary dust collector is connected to one end of the combustion chamber, and the other end of the combustion chamber is connected to the tail gas processing device.
9. The battery material handling system of claim 8, wherein a heat exchanger is disposed between the partial pressure handling system and the heat source circulation system, the heat exchanger configured to transfer a temperature of the flue gas exiting the combustion chamber to the inert gas in the heat source circulation system.
10. The battery material handling system of claim 1, wherein a hood is mounted over the air distribution holes of the air inlet and distribution device.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114875229A (en) * | 2022-04-21 | 2022-08-09 | 北京理工大学重庆创新中心 | Battery core combination heat treatment complete device |
| CN114914571A (en) * | 2022-05-31 | 2022-08-16 | 赣州赛可韦尔科技有限公司 | Waste lithium battery electrolyte rapid removal equipment |
| CN116273407A (en) * | 2023-05-11 | 2023-06-23 | 深圳市杰成镍钴新能源科技有限公司 | Method and device for crushing live retired battery |
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