KR102334865B1 - Batch processing system for waste lithium secondary battery - Google Patents

Abstract

The present invention relates to a batch processing system for waste lithium secondary batteries, which disassembles and batch-processes waste lithium secondary batteries of a pack state used in electric vehicles, thereby effectively treating harmful electrolytes and efficiently recovering valuable metals, such as nickel, cobalt, manganese, and lithium, and aluminum and copper forming electrode plates. According to the present invention, the batch processing system comprises: a disassembling unit including a plurality of conveyors and a plurality of robots to disassemble a battery pack; a heating unit receiving modules and cells supplied from the disassembling unit to removing harmful components; a crushing unit receiving products discharged from the heating unit to crush the received products; a classification unit classifying powder or granules discharged from the crushing unit by size; and a valuable metal recovery unit separating and recovering each valuable metal component from a powdery material transferred from the classification unit.

Description

Batch processing system for waste lithium secondary battery

The present invention relates to a system for disassembling and collectively processing waste lithium secondary batteries, and more particularly, by collectively processing waste lithium secondary batteries in a pack state used in electric vehicles to effectively treat harmful electrolytes, It relates to a waste lithium secondary battery batch processing system capable of efficiently recovering valuable metals such as cobalt, manganese, and lithium, and aluminum and copper constituting the electrode plate.

In recent years, electric vehicles are rapidly spreading, and lithium secondary batteries used in electric vehicles are later discarded, and technology development for treatment and recycling of lithium secondary batteries that are discarded in the future is being attempted.

As an example, Patent Document 1 below relates to a recycling device for a waste lithium ion battery, the shredder shredder that confirms whether the waste battery is completely discharged, the completely discharged waste battery is put in, and the shredding is performed in the air; An underwater crushing unit that is crushed in water when a waste battery that has not been completely discharged is put into the inlet; a general crusher for crushing the fragments crushed by the underwater crusher and the fragments crushed by the shredder crusher into smaller pieces; a drying unit for drying the crushed pieces; and a classification unit for classifying and storing the crushed pieces dried in the drying unit.

As another example, the following Patent Document 2 relates to a waste battery recycling device, which removes the electrolyte of the waste packaged battery and pulverizes the waste packaged battery and the waste bulk battery to separately obtain a paste, a grid, a synthetic resin, and a separator. wealth; a material supply unit for feeding the grid and the paste to the first scraper conveyor through the discharging screw conveyor, and discharging the powdered coal, powdered iron, and soda ash to the first scraper conveyor and mixing them with each other to the second scraper conveyor and the input screw conveyor; a dissolving unit receiving a material supplied through the material supply unit and heating the material to dissolve the material; a kettle for temporarily storing the material after removing the slag of the material tapped from the melting part; a casting machine for producing lead ingots by receiving the filled material of the kettle through a lead pump; characterized by including.

Registered Patent Publication No. 10-2134719 (2020. 07. 16. Announcement) Registered Patent Publication No. 10-1348490 (2014. 01. 09. Announcement)

The problem to be solved in the present invention is to effectively treat harmful electrolytes by disassembling and treating the waste lithium secondary battery in a pack state used in electric vehicles in a batch process, and to construct an electrode plate with valuable metals of nickel, cobalt, manganese, and lithium. It is to provide a waste lithium secondary battery batch processing system that can efficiently recover aluminum and copper.

In order to solve the above problems, the waste lithium secondary battery batch processing system of the present invention includes: a disassembling unit for disassembling the battery pack to a module or cell unit, including a plurality of conveyors and a plurality of robots; a heat treatment unit for removing harmful components by heat treatment of the module or cell supplied from the decomposition treatment unit; a crushing unit receiving the products discharged from the heat treatment unit and crushing them; a classification processing unit for dividing the powder or granules discharged from the crushing unit by size; and a valuable metal recovery processing unit that separates and recovers each valuable metal component from the powdery material transferred from the classification processing unit, wherein the plurality of conveyors include a conveying conveyor that moves while the battery pack is disassembled, The robot of is composed of a battery pack robot that removes the cover of the battery pack and a module robot that separates the module from the battery pack with the cover open, or a battery pack robot that removes the cover of the battery pack and the battery with the cover open It consists of a module robot that separates the module from the pack and a cell robot that separates cells from the disassembled module, wherein the module robot separates cables and parts connecting the modules, and the disassembly and processing unit is applied to the battery pack robot. The cover of the battery pack separated by the module, the cables, parts, and modules separated by the module robot are separated and the remaining battery pack case is discharged to a separate storage area.

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In addition, the waste lithium secondary battery batch processing system of the present invention is a rotary heat treatment furnace in which the heat treatment unit is heated by putting the module or cell discharged from the decomposition treatment section, and is connected to the rotary heat treatment furnace to evaporate and burn within the rotary heat treatment furnace. It consists of an atmospheric environment facility for removing the generated harmful substances, and a cooling facility for lowering the temperature of the slug discharged from the rotary heat treatment furnace.

In addition, the waste lithium secondary battery batch processing system of the present invention includes an inlet through which the module or cell in which the rotary heat treatment furnace is separated is inserted, an inner passage that is connected to the inlet and a passage through which the inserted module or cell moves, and surrounds the inner tube An outer cylinder equipped with a heating means using oil, LPG, or a heater, a steam outlet connected to the inner cylinder through which vaporized and burned gas in the rotary heat treatment furnace is discharged, and the inner cylinder is connected to the inner cylinder to evaporate and burn in the rotary heat treatment furnace An outlet is provided through which the remaining products are discharged.

In addition, the waste lithium secondary battery batch processing system of the present invention includes a first pipe connecting the atmospheric environment facility to the outlet of the rotary heat treatment furnace and a second pipe connecting between the steam treatment tank and the scrubber, and the first pipe It is connected to and includes a steam treatment tank in which harmful substances are primarily removed as the gas discharged from the rotary heat treatment furnace passes, and the lower part of it is filled with water or oil, and the upper part of the inner part is equipped with a demister. , a scrubber connected to the second pipe to finally remove harmful substances from the gas discharged from the steam treatment tank is included.

In addition, the waste lithium secondary battery batch processing system of the present invention is an ultrasonic classifier in which the classifying unit separates the powdery material of nickel, cobalt, manganese, lithium and graphite and the granular material of aluminum, copper, and other components ; a powder processing unit including a hopper through which a powdery material is introduced from the ultrasonic classifier, a valve installed under the hopper, and a second screw conveyor connected to a lower end of the valve; and a grain processing unit including a non-ferrous sorter for each of aluminum grains, copper grains, and other grains by using an eddy current to which a grainy material is introduced from the ultrasonic classifier.

In addition, the waste lithium secondary battery batch processing system of the present invention includes a reaction tank for sequentially leaching valuable metals dissolved in an acidic liquid and ionized in an acidic liquid while the valuable metal recovery processing unit changes the pH from acid to alkali, and sulfuric acid and hydrogen peroxide in the reaction tank , a reaction solution supply unit for supplying caustic soda, and a valuable metal recovery unit for recovering each valuable metal leached at a predetermined pH.

In addition, the waste lithium secondary battery batch processing system of the present invention includes a stirrer capable of controlling the stirring speed by using an inverter in the reaction tank, a temperature sensor measuring the temperature inside the reaction tank, and a pH meter measuring the pH of the solution inside the reaction tank is provided.

In addition, the waste lithium secondary battery batch processing system of the present invention comprises a diaphragm pump through which the valuable metal recovery unit flows in and discharges the leachate from the reaction tank, and a valuable metal separation tank for mining valuable metals while the leachate discharged from the diaphragm pump passes through. include

According to the waste lithium secondary battery batch processing system of the present invention, by providing a vacuum suction facility around the battery pack robot, the module robot, and the cell robot, in the process of disassembling the waste lithium secondary battery in the pack state used in the electric vehicle, the human body It can effectively dispose of harmful electrolytes.

In addition, according to the waste lithium secondary battery batch processing system of the present invention, it is possible to efficiently collect the battery pack case, the module case and other parts by providing the battery pack robot, the module robot and the cell robot.

In addition, according to the waste lithium secondary battery batch processing system of the present invention, valuable metals such as nickel, cobalt, manganese, and lithium and aluminum and copper constituting the electrode plate can be efficiently recovered by providing the classification processing unit and the valuable metal recovery processing unit.

In addition, according to the waste lithium secondary battery batch processing system of the present invention, from the disassembling of the waste lithium secondary battery to the collecting and recovering of the main material can be processed in one batch, thereby greatly increasing the effectiveness of the system.

1 is a block diagram of a waste lithium secondary battery batch processing system according to an embodiment of the present invention.
2 is an enlarged view of the disassembly processing unit of the waste lithium secondary battery batch processing system according to an embodiment of the present invention.
3 is an enlarged view of a heat treatment unit of a waste lithium secondary battery batch processing system according to an embodiment of the present invention.
4 is an enlarged view of the crushing unit of the waste lithium secondary battery batch processing system according to an embodiment of the present invention.
5 is an enlarged view of the classification processing unit of the waste lithium secondary battery batch processing system according to an embodiment of the present invention.
6 is an enlarged view of a valuable metal recovery processing unit of a waste lithium secondary battery batch processing system according to an embodiment of the present invention.
7 is an enlarged view of part A of FIG. 6 .

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1, the waste lithium secondary battery batch processing system of the present invention consists of a decomposition processing unit 100, a heat treatment unit 200, a crushing processing unit 300, a classification processing unit 400 and a valuable metal recovery processing unit 500. .

Hereinafter, specific contents of the present invention will be described for each configuration.

The decomposition processing unit 100 is a configuration that decomposes the packed-state waste lithium secondary batteries (hereinafter referred to as “battery pack”) supplied to the transfer conveyor 111 down to the cell unit, and as shown in FIG. 2 , the conveyor 110 ) and a plurality of robots 130 .

At this time, the waste lithium secondary battery is completely discharged for safety and then supplied to the transfer conveyor 111 .

Specifically, the conveyor 110 is a transfer conveyor 111 that moves while the waste lithium secondary battery is disassembled, a plurality of conversion conveyors 113 that are provided so as to be lifted and lowered under the transfer conveyor 111, and the transfer conveyor It is disposed at a right angle to the 111 and consists of a plurality of discharge conveyors 115 for receiving and discharging the disassembled parts from the conversion conveyor 113.

And a centering device 120 is provided on one side of the transport conveyor 111 corresponding to each of the plurality of robots 130 to fix the position of the spent lithium secondary battery in the correct position, and thus fixed to the fixed position. In this state, the disassembly operation by the robot 130 is performed.

The plurality of robots 130 are provided in the order of the battery pack robot 131 , the module robot 133 , and the cell robot 135 from the entry side.

The battery pack robot 131 uses a vision to determine the type of battery pack from which manufacturer and vehicle, and disassembles according to a predetermined order.

At this time, the exterior of the battery pack can be cut and separated using a laser to open the cover or disassemble while replacing the tool using a tool changer. It is discharged to the storage location, and the remaining battery pack parts except for the cover are moved along the transfer conveyor 111 .

The module robot 133 separates the module from the battery pack with an open cover. Like the battery pack robot 131, the module robot 133 uses a vision to check the location to work, and uses a necessary tool to separate the module. Conduct.

Specifically, a workbench 125 is provided in front of the modular robot 133, and a clamping device is provided on the workbench 125 to hold the battery pack, and the workbench 125 is mounted on a lifting device. to be lifted by

The clamping device can turn the battery pack over while holding the battery pack, and the module robot 133 separates the cables and other parts connecting the modules in a state in which the cover is turned over the battery pack, The separated parts fall down and are collected in a container provided separately on the work bench 125 .

After that, the clamping device moves the container to the conversion conveyor 113 side, and the container is discharged to a separate storage place through the conversion conveyor 113 and the discharge conveyor 115 .

On the other hand, when the cable and other parts are separated, the battery pack is turned over again to its original state, and in that state, the module robot 133 separates the module from the battery pack, and the separated module is installed in the module robot 133. It is mounted on the transfer conveyor 111 using a gripper and transferred.

And the module is separated and the remaining battery pack case is discharged to a separate storage place through the conversion conveyor 113 and the discharge conveyor 115.

The cell robot 135 separates the cell from the disassembled module, and may separate the cell from the module using a dedicated tool, and in some cases may separate the cell from the module through cutting.

At this time, the separated cells are mounted on the transfer conveyor 111 and transferred, and the remaining module parts are discharged to a separate storage place through the conversion conveyor 113 and the discharge conveyor 115 .

Meanwhile, if necessary, the cell separation operation by the cell robot 135 may be omitted.

In the present invention, when cutting using a laser during the decomposition treatment process, electrolyte harmful to the human body may leak. In order to handle this, a vacuum is placed around the battery pack robot 131 , the module robot 133 and the cell robot 135 . A suction facility 150 is further provided.

The vacuum suction facility 150 sucks the surrounding air of the battery pack robot 131, the module robot 133, and the cell robot 135 into a vacuum, and the sucked air is sent to the steam treatment tank 155 containing water. After filtering out the leaked gaseous electrolyte in the vapor treatment tank 155, clean air is discharged into the atmosphere.

And when the concentration of the leaked gas is thick, it can be configured to immediately sound a warning alarm by the sensor, thereby preventing the worker from being exposed to a dangerous environment.

As shown in FIG. 3, the heat treatment unit 200 heats the module or cell supplied from the transfer conveyor 111 and evaporates and burns some materials therefrom to remove harmful components, and a rotary heat treatment furnace ( 210), an atmospheric environment facility 230 and a cooling facility 250.

Specifically, the rotary heat treatment furnace 210 includes an inlet 211 into which the separated module or cell is put, and an inner cylinder 212 connected to the inlet 211 and rotatably provided with the input module or cell moving and rotatable. , an outer cylinder 213 that surrounds the inner cylinder 212 and provided with a heating means using oil, LPG, or a heater, and is connected to the outer cylinder 213 so that the gas evaporated and burned in the rotary heat treatment furnace 210 is discharged A steam outlet 214 and an outlet 215 connected to the inner cylinder 212 through which the slug remaining after evaporation and combustion in the rotary heat treatment furnace 210 is discharged is provided.

Modules or cells put into the rotary heat treatment furnace 210 are self-decomposed due to self-explosion due to high temperature, the electrolyte is evaporated by high temperature, and the separator is burned when it is 200°C or higher, and is attached to the electrode plate when it is 400°C or higher. The active material is peeled off.

Here, the rotary heat treatment furnace 210 is heated to a temperature that does not melt valuable metals such as aluminum as a positive electrode plate material, copper as a negative electrode plate material, and nickel, cobalt, and manganese as active materials.

The slug has a form in which each of the above materials is agglomerated in a state of being separated from each other.

The atmospheric environment facility 230 is for removing harmful substances generated while evaporating and burning inside the rotary heat treatment furnace 210, and includes a plurality of pipes 231, a steam treatment tank 233 and a scrubber 235. is composed

The plurality of pipes 231 are a first pipe 231a connected to the steam outlet 214 of the rotary heat treatment furnace 210 and a second pipe 231b connecting between the steam treatment tank 233 and the scrubber 235 . ) is included.

The steam treatment tank 233 is a place where harmful substances are primarily removed while the gas discharged from the rotary heat treatment furnace 210 passes, and the lower part of the steam treatment tank 233 is filled with water or oil, and the upper part of the Mr. 233a is provided.

That is, the gas discharged from the rotary heat treatment furnace 210 flows into the lower portion of the steam treatment tank 233 , and bubbling occurs in water or oil by the discharged gas. In this process, harmful gases contained in the gas Most of the substances are removed, and the gas + liquid droplets generated during the bubbling rise to the top and come into contact with the demister 233a, and a part of the gas in the demister 233a changes to a liquid phase by contact, and thus becomes a liquid phase. The changed liquid and the liquid in the droplet fall again to the bottom, and only the gas passes through the demister 233a.

At this time, since the gas that has passed through the demister 233a has a lowered temperature and the gas in this state flows into the scrubber 235 , it does not adversely affect the scrubber 235 .

On the other hand, a first chiller 233b is provided under the steam treatment tank 233, and water or oil in the steam treatment tank 233 by the first chiller 233b can be maintained within an appropriate temperature range. do.

The scrubber 235 is configured to finally remove harmful substances from the gas discharged from the steam treatment tank 233 .

In this way, the present invention can build an environmentally safe system.

The cooling facility 250 is a configuration for lowering the temperature of the slug discharged from the outlet 215 of the rotary heat treatment furnace 210, and includes a cooling tank 251 and a second chiller 253, which is of a subsequent process. This is to ensure safety.

Specifically, the cooling tube 251 has a cylindrical shape having a cross-sectional shape of a left or right side or a right side, and the inlet 251a through which the high-temperature slug is put on the upper side of the larger cross-section is the one with the smaller cross-section. A discharge port 251b through which the cooled slug is discharged is provided at one side of the bottom, and a horizontal stirrer (not shown) rotated by a driving means may be further provided therein.

In addition, the second chiller 253 is to supply cooling water to the outer periphery of the cooling tube 251 to cool the cooling tube 251, and the second chiller 253 is replaced with various cooling means performing the same function. can be

As shown in FIG. 4 , the crushing unit 300 is configured to receive solid slug discharged from the heat treatment unit 200 and crush it, and a hammer mill 310 and the hammer for crushing to a rather coarse size. It is composed of a crusher mill 330 that crushes something crushed in the mill 310 to a slightly finer degree.

At this time, while passing through the crusher mill 330 , the solid slug becomes powder or granular depending on the type of material, and is transferred to the device for the next process through the first screw conveyor 350 .

As shown in FIG. 5 , the classifying unit 400 divides the powder or grains supplied from the first screw conveyor 350 of the crushing unit 300 by size, and an ultrasonic classifier 410 , a powder processing unit 430 and a grain processing unit 450 .

Specifically, the ultrasonic classifier 410 is a powdery material, that is, a material of nickel, cobalt, manganese, lithium, and graphite components constituting the active material, and a material in a granular state, that is, aluminum grains, copper grains, and other components. separate substances.

The powder processing unit 430 is a place for processing powdery substances, and includes a hopper 431 through which powdery substances are introduced from the ultrasonic classifier 410 and a valve 432 installed under the hopper 431 . and a second screw conveyor 433 connected to the lower end of the valve 432 .

When the powdery material is put into the hopper 431 to an appropriate level, the valve 432 is opened to supply an appropriate amount of the powdery material to the valuable metal recovery processing unit 500 through the second screw conveyor 433 .

In this case, the valve 432 may be composed of an automatic valve and a rotary valve, and an input valve 433a is provided on the discharge side of the second screw conveyor 433 .

In addition, it is preferable to finally remove the iron component that may exist by further providing a line magnetic filter 434 at the lower end of the valve 432 .

The granule processing unit 450 is configured to include a non-ferrous sorter 453 into which the granular material is introduced from the ultrasonic classifier 410 .

The non-ferrous sorter 453 is a sorter using an eddy current, and sorts aluminum grains, copper grains, and other grains, respectively, and stores them in a separate tone bag.

And the aluminum grains, copper grains, and other grains selected in this way are put into a recycling process and used later if necessary.

As shown in FIG. 6 , the valuable metal recovery processing unit 500 is configured to separate and recover valuable metal components from powdery substances, and includes a reaction tank 510 , a reaction solution supply unit 530 , and valuable metal recovery. and a unit 550 .

Specifically, the reaction vessel 510 is a reaction vessel in which valuable metal is leached, and is made of a stainless material, and includes a stirrer 511 capable of adjusting the stirring speed using an inverter, and a temperature for measuring the temperature inside the reaction vessel 510 . A sensor 512 and a pH meter 513 for measuring the pH of the solution inside the reaction tank 510 are provided.

In addition, the reaction tank 510 is preferably heated to about 60 ~ 80 ℃ by the electric heater 520 provided outside in order to increase the extraction efficiency of valuable metals.

The reaction solution supply unit 530 includes a storage tank 531 storing sulfuric acid, hydrogen peroxide, and caustic soda into the reaction tank 510, and sulfuric acid, hydrogen peroxide, and caustic soda in each storage tank 531 in the reaction tank 510. It includes a metering pump 532 for supplying in a fixed amount to the furnace, and a check valve 533 connected to each metering pump to prevent backflow.

In addition, the reaction solution supply unit 530 is further provided with a flow meter 534 and a level meter 535, and through the flow meter 534 and the level meter 535, appropriate amounts of sulfuric acid and hydrogen peroxide are converted into a strongly acidic reaction tank ( 510) may be stored.

As such, when a certain amount of powdery material is added in a state in which appropriate amounts of sulfuric acid and hydrogen peroxide are stored in the reaction tank 510 , the input valve 433a is closed and the stirrer ( ) is operated.

When it is judged that the powder is dissolved in the strongly acidic liquid and all ionized through stirring for an appropriate time, the stirring is stopped and caustic soda is added to change the pH from acid to alkali, and the ionized valuable metal dissolved in the acidic liquid is leached out in turn. .

That is, by repeating the process of leaching valuable metals by operating the stirrer after adjusting the pH to a predetermined value, it is possible to recover valuable metals such as nickel, cobalt, manganese, and lithium.

For example, when the pH is 5, nickel is leached, when the pH is 6, cobalt is leached, when the pH is 7, manganese is leached, and when the pH is 8, lithium is leached.

Here, the type of leachate according to the value of the pH is merely an example.

The valuable metal recovery unit 550 is configured to recover each valuable metal leached at a predetermined pH. and a valuable metal separation tank 553 for mining valuable metals while the leachate passes.

As shown in FIG. 7 , the valuable metal separation tank 553 has a leachate flowing in the lower part and the leachate flowing out of the upper part, and a filter 553a is provided in the middle so that valuable metals are mined during the flow of the leachate. .

At this time, the leachate discharged from the valuable metal separation tank 553 is sent back to the reaction tank 510 .

On the other hand, when it is determined that the valuable metal has been sufficiently mined in the valuable metal separation tank 553, water is supplied to wash all the chemical components attached to the valuable metal and then recover it.

After these valuable metals are recovered, graphite remains in the reaction tank 710 and is finally discharged together with water when the reaction tank 710 is washed.

Although preferred embodiments of the present invention have been described above, the scope of the present invention is not limited thereto, and it should be understood that the scope of the present invention extends to those substantially equivalent to the embodiments of the present invention. Various modifications may be made by those of ordinary skill in the art to which the invention pertains without departing from the spirit of the invention.

100: decomposition processing unit
200: heat treatment unit
300: crushing unit
400: classification processing unit
500: valuable metal recovery processing unit

Claims (10)

A disassembling unit for disassembling the battery pack to a module or cell unit, including a plurality of conveyors and a plurality of robots;
a heat treatment unit for removing harmful components by heat treatment of the module or cell supplied from the decomposition treatment unit;
a crushing unit receiving the products discharged from the heat treatment unit and crushing them;
a classification processing unit for dividing the powder or granules discharged from the crushing unit by size; and
a valuable metal recovery processing unit for separating and recovering each valuable metal component from the powdery material transferred from the classification processing unit;
is made of,
The plurality of conveyors include a transport conveyor that moves while the battery pack is disassembled,
The plurality of robots consists of a battery pack robot that removes the cover of the battery pack and a module robot that separates the module from the battery pack with the cover open, or the battery pack robot that removes the cover of the battery pack and the cover is open It consists of a module robot that separates modules from the battery pack and a cell robot that separates cells from the disassembled module.
The module robot separates the cables and parts connecting the modules,
The decomposition processing unit
A batch of waste lithium secondary batteries, characterized in that the battery pack cover separated by the battery pack robot, the cables, parts, and modules separated by the module robot are separated and the remaining battery pack case is discharged to a separate storage place processing system. delete delete According to claim 1,
The heat treatment unit
A rotary heat treatment furnace in which the module or cell discharged from the decomposition treatment unit is put in and heated, an atmospheric environment facility connected to the rotary heat treatment furnace to remove harmful substances generated while evaporating and burning inside the rotary heat treatment furnace, and in the rotary heat treatment furnace A waste lithium secondary battery batch processing system, characterized in that it consists of a cooling facility that lowers the temperature of the discharged slug. 5. The method of claim 4,
The rotary heat treatment furnace
An inlet into which the separated module or cell is put, an inner tube that is connected to the inlet and a passage through which the inserted module or cell moves, an outer tube that surrounds the inner tube and is equipped with a heating means using oil, LPG, or a heater, and the inner tube A waste lithium secondary battery batch, characterized in that it is connected to a steam outlet through which vaporized and combusted gas in the rotary heat treatment furnace is discharged, and an outlet connected to the inner cylinder through which products evaporated and burned in the rotary heat treatment furnace and remaining products are discharged. processing system. 5. The method of claim 4,
The atmospheric environment facility is
A first pipe connected to the outlet of the rotary heat treatment furnace and a second pipe connecting between the steam treatment tank and the scrubber,
As the gas discharged from the rotary heat treatment furnace connected to the first pipe passes, harmful substances are primarily removed, and the lower part of the inside is filled with water or oil, and the steam is provided with a demister at the upper part of the inside. treatment tank is included,
and a scrubber connected to the second pipe to finally remove harmful substances from the gas discharged from the steam treatment tank. According to claim 1,
The classification processing unit
an ultrasonic classifier that separates powdered materials of nickel, cobalt, manganese, lithium and graphite from particles of aluminum, copper, and other components;
a powder processing unit including a hopper through which a powdery material is introduced from the ultrasonic classifier, a valve installed under the hopper, and a second screw conveyor connected to a lower end of the valve; and
Waste lithium secondary battery batch processing system, characterized in that it is composed of a grain processing unit including a non-ferrous sorter that separates aluminum grains, copper grains, and other grains by using an eddy current in which a grainy material is introduced from the ultrasonic classifier. According to claim 1,
The valuable metal recovery processing unit
A reaction tank for sequentially leaching valuable metals dissolved in an acidic liquid and ionized in an acidic liquid while changing the pH from acid to alkali; A waste lithium secondary battery batch processing system, characterized in that it comprises a valuable metal recovery unit for recovering metal. 9. The method of claim 8,
In the reaction tank
A waste lithium secondary battery batch processing system, characterized in that it is equipped with a stirrer capable of adjusting the stirring speed using an inverter, a temperature sensor for measuring the temperature inside the reaction tank, and a pH meter for measuring the pH of the solution inside the reaction tank. 10. The method of claim 9,
The valuable metal recovery unit
A waste lithium secondary battery batch processing system comprising: a diaphragm pump for introducing and discharging the leachate from the reactor; and a valuable metal separation tank for mining valuable metals while the leachate discharged from the diaphragm pump passes.

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