KR101667271B1 - The System Removing A Superficial coating of A Metallic foil For Recycling of Metals - Google Patents

Abstract

According to an aspect of the present invention, there is provided a coating removal system for removing a coating on a surface of a metal foil, A coating agent containing a solvent agent contained in the coating agent, and a mixing portion for mixing the coating layer of the shredded metal piece and the solvent agent to react therewith; A transferring part for transferring the metal piece from one end to the other end; A dewatering unit which receives the metal fragments from the other end of the transfer unit and removes the residues adhering to the surface of the metal fragments by centrifugal force; And a compression unit that receives the dehydrated metal debris from the dehydrating unit and compresses the metal debris into a metal ingot of a predetermined size.
According to the present invention, the metal foil on which the coating layer is formed is continuously passed through the coating agent rejection, the transferring portion, the dewatering portion and the compression portion in the state where the minimized work force is applied, so that the effect of extracting the recyclable metal pieces quickly and easily In addition, the present invention realizes automation in which the transfer and cleaning of the metal pieces can be performed simultaneously through the transfer part and the cleaning part provided therein, thereby contributing to the reduction of manpower and the labor intensity of the worker.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a metal foil,

The present invention relates to a coating removal system for the surface of a metal foil, and more particularly to a coating removal system for a metal foil which is capable of obtaining a metal piece capable of being recycled by removing a surface coating while passing through a series of apparatuses such as a coating agent rejection, ≪ / RTI >

Demand for rechargeable rechargeable batteries has increased exponentially thanks to worldwide popularity and boom in portable electronic products such as electronic communication devices and tablet PCs. Furthermore, as the replacement cycle of electronic products becomes shorter, the waste of electronic products and secondary batteries is unimaginably increased, but the technology of recycling or reprocessing them is weak compared with the necessity.

Particularly, recycling technology for extracting only pure metal by removing a foreign substance or coating after firstly separating a metal material from a substrate and a secondary battery built in an electronic product is a high value-added technology. However, the metallic material used for the electronic product or the secondary battery is coated on the surface with cobalt or carbon to suit each application. Such a coating is peeled off by hand or simple grinding, The conventional method of extracting the metal material has not been automated and takes a long time, and also has a problem that the work intensity is strong and harmful to the human body.

Korean Patent Registration No. 10-0796369 discloses an overall recovery method for extracting valuable metals such as cobalt and copper and extracting recycled plastics by completely dismantling a spent lithium ion battery.

Specifically, a method for extracting a high-purity metal material from a waste lithium ion battery will be described. Specifically, a material containing impurities other than metal components is pulverized to a predetermined particle size and then introduced into a heating furnace. The molten material is melted and then gradually cooled to allow the slag (residue) layer and the metal layer to be separated from each other naturally, thereby extracting the metal of high purity.

This method consumes a lot of energy in the process of melting the material and requires complicated steps such as melting and cooling. Therefore, there is a problem that it takes much time and cost to extract the metal. In order to provide the entire facility such as a heating furnace, There is a problem that a large work space is required. In addition, I can not find any description of automation related technology to reduce working time and labor intensity.

Accordingly, it is an object of the present invention to provide a coating removal system for a metal foil surface, which can quickly and easily extract pure metal fragments from a metal foil having a coating layer formed thereon.

It is also an object of the present invention to provide a coating removal system for a metal foil surface that can reduce the labor intensity of an operator with automated processing.

It is also an object of the present invention to provide a coating removal system for a metal foil surface which can reduce a working time while using less energy than a dry processing method in which a high-temperature heat source is operated to melt a material.

It is also an object of the present invention to provide a coating removal system for a metal foil surface which can increase ease of transportation, loading and management of metal chips, and can achieve automation through appropriate control of the radiator and the hydraulic press.

The problems to be solved by the present invention are not limited to those mentioned above, and other solutions not mentioned can be clearly understood by those skilled in the art from the following description.

Means for attaining the object of the present invention is to provide a metal foil having a crushing part for crushing a metal foil having a coating layer formed on one surface thereof into a metal piece, a solvent agent contained in the metal foil for removing the coating layer, And a mixing portion for mixing the solvent to be reacted; A transferring part for transferring the metal piece from one end to the other end; A dewatering unit which receives the metal fragments from the other end of the transfer unit and removes the residues adhering to the surface of the metal fragments by centrifugal force; And a compression unit that receives the dehydrated metal debris from the dehydrating unit and compresses the metal debris into a metal ingot of a predetermined size.

The transfer unit may further include a cleaning unit installed along the transfer line to clean the surface of the metal piece to be transferred.

The compression unit may further include: a hopper that receives the piece of metal from the dehydrating unit; A vibrator provided at one side of the hopper to vibrate the hopper so that the metal fragments smoothly move downward; A radiator which is disposed at a lower end of the hopper and moves the metal pieces inserted through the hopper to the outside; And a hydraulic presser installed at a position adjacent to the other end of the radiator and adapted to receive the metal piece transferred from the radiator and compress the metal piece into a metal lump having a predetermined size.

The conveying unit is characterized by being made of a screw conveyor system so as to smoothly convey a piece of metal.

Further, the solvent agent contained in the coating agent rejection is characterized by comprising 98% by weight of water and 2% by weight of glacial acetic acid.

The apparatus may further include a filter unit connected to the coating rejection unit, the transfer unit, and the dewatering unit, for discharging the mixture including the solvent and the stripped coating layer, extracting the coating layer, and re- do.

According to the present invention, the metal foil on which the coating layer is formed is continuously passed through the coating agent rejection, the transferring portion, the dewatering portion and the compression portion in the state where the minimized work force is applied, so that the effect of extracting the recyclable metal pieces quickly and easily have.

In addition, the present invention realizes automation in which the transferring and washing of the metal pieces can be simultaneously performed through the transfer part and the cleaning part provided therein, thereby contributing to the reduction of manpower and the labor intensity of the worker.

In addition, by using a wet treatment method in which a coating layer is removed through a solvent agent rather than a dry treatment method requiring much time and energy, such as a process of melting a material and cooling it, work time can be reduced while using less energy, There is an effect that reduction can be achieved.

Further, by forming the compression section with a hopper, a vibrator, a radiator, and a hydraulic compression device, and then molding the metal piece into a metal lump, it is possible to increase the ease of transportation, loading and management of the metal piece, and through appropriate control of the radiator and the hydraulic compression device There is an effect of achieving automation.

The effects of the present invention are not limited to those mentioned above, and other effects not mentioned can be clearly understood by those skilled in the art from the following description.

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a plan view of an entire coating removal system of a metal foil surface according to the present invention;
2 is a front view of the entire system of a coating removal system for a metal foil surface in accordance with the present invention.
3 is a front view specifically illustrating a compression section of a coating removal system for a metal foil surface according to the present invention.
4 is a block diagram briefly illustrating a process of a coating removal system for a metal foil surface in accordance with the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. The terms and words used in the present specification and claims should not be construed to be limited to ordinary or dictionary meanings, and the inventor should properly define the concept of the term to describe its invention in the best possible way Can be interpreted as meaning and concept consistent with the technical idea of the present invention.

Therefore, it is to be understood that the present invention may be embodied in many other specific forms without departing from the spirit or essential characteristics thereof. Accordingly, And the like.

1 and 2, a coating removal system for a metal foil surface according to the present invention includes a metal foil 100, a coating rejection 200, a transfer part 300, a dewatering part 400, 500) and the like.

According to the present invention having such a constitution, a metal material having various coatings on the surface of a metal material is subject to recycling among metal materials used for an electronic product or a secondary battery, and after the coating is completely removed, only a pure metal material It is designed to be recovered.

Therefore, the metal foil 100 of the present invention is mechanically or physically separated for recycling in a product such as an electronic product or a secondary battery using the metal material having the coating layer 110 electrically. The metal foil 100 has a coating layer 110 Is formed.

At this time, the coating layer 110 formed on the metal foil 100 may vary depending on the application as described above, but in the case of the metal foil 100 such as aluminum used for the secondary battery anode, In the case of a metal foil 100 such as copper used for a secondary battery negative electrode, carbon (graphite) is coated on one side thereof with an adhesive component.

In the embodiment of the present invention, the constitution of the present invention is described on the premise that carbon is coated on the surface of the metal foil 100 by an adhesive component. However, the constituent components of the solvent agent 220, The present invention can be applied to the metal foil 100 coated with various kinds of materials.

The coating agent rejection 200 is a component for grinding the metal foil 100 inserted into the metal piece 100a and removing the coating layer 110 on the metal piece 100a. ), A solvent (220), a mixing part (230), and the like. Such a coating rejection 200 may be of any configuration as long as it is implemented so as to simultaneously perform the functions as described above.

However, the coating agent rejection 200 according to the embodiment of the present invention is formed in a cylindrical shape having an open top surface capable of containing a liquid or the like, and is provided with a crushing portion 100a for crushing the metal foil 100 with a metal piece 100a, The solvent agent 220 for removing the coating layer 110 is accommodated in the cylindrical shape and the solvent agent 220 and the coating layer of the metal piece 100a are mixed with each other at one side thereof A mixing part 230 is provided. As shown in FIGS. 1 and 2, it is needless to say that a plurality of coating agent rejects 200 may be installed as needed.

More specifically, the crushing unit 210 is a component provided to increase the removal efficiency of the coating layer 110 by increasing the contact area between the solvent agent 220 and the coating layer 110, Any type of metal foil 100 may be used as long as it can crush the metal foil 100 applied to the upper surface with the metal piece 100a.

However, it is preferable that three crushing parts 210 are provided at equal intervals on the upper surface of the coating agent rejection 200 for smooth crushing of the metal foil 100 to be injected. The crushing particle size can be variously changed according to need, but is crushed to a particle size of 5 to 10 mm which is larger than the manure hole 310 formed on the underside of the washing part 330, which will be described later.

The solvent agent 220 dissolves the coating layer 110 on the metal foil 100 to dissolve the adhesive component that adheres the coating layer 110 onto the metal foil 100 to form the coating layer 110 from the metal foil 100. [ Which is a component for separating or removing. The solvent 220 may be variously modified depending on the type or composition of the coating layer 110, and thus the present invention can be applied.

However, in the embodiment of the present invention, in order to easily remove the carbon coated on the metal foil 100 by the adhesive component from the metal foil 100, the solvent 220 is mixed with 98% by weight of water and 2% by weight of glacial acetic acid, Is used. At this time, by using glacial acetic acid as a plant organic acid obtained through bamboo extract, removal of the carbon coating layer 110 can be performed more easily.

The mixing part 230 generates a vortex in the coating agent rejection 200 so that the solvent agent 220 and the coating layer 110 of the metal piece 100a can react with each other. Can be applied.

However, the mixing unit 230 in the embodiment of the present invention is implemented as a propeller connected to a power unit such as a motor, and generates a vortex of the solvent agent 220 by a thrust generated through the rotation of the propeller. Due to the mixing part 230, the number of the reaction collision of the solvent agent 220 and the coating layer 110 of the metal piece 100a is increased, and the coating layer 110 is quickly removed.

A drain hole 240 communicating with the outside is formed at a lower side of the lower part of the coating agent rejection 200 so that the mixture of the metal particles 100a, the solvent agent 220 and the detached coating layer 110 can be discharged to the outside.

The transfer unit 300 is a component for moving the metal piece 100a that has been worked through the coating agent rejection 200 to the dewatering unit 400 spaced a predetermined distance, And the other end is installed at a position adjacent to the dewatering unit 400 and transfers the metal piece 100a received through the drain hole 240 to the other end where the dewatering unit 400 is located.

The conveyance unit 300 may be any type of conveyance unit as long as the conveyance unit 300 is capable of smoothly conveying the metal piece 100a. However, the conveyance unit 300 in the embodiment of the present invention may be a conveyance unit, So that the slice 100a can be smoothly conveyed.

As shown in FIGS. 1 and 2, if necessary, it may be manufactured as two or more powder-separated transfer parts 300, and the transfer part 300 adjacent to the spin- It is preferable that the other end is positioned higher than one end of the transfer unit 300 adjacent to the drain hole 240 and the metal piece 100a transferred to the drainage unit 400 flows into the drainage unit 400 naturally by gravity .

At this time, the solvent agent 220 and the stripped coating layer 110, which are discharged together through the drain hole 240, are smoothly passed downward, but the metal pieces 100a can not pass through the drainage hole 240, (310) is formed. A lower portion of the transfer unit 300 is provided with a receiving part 320 capable of receiving a mixture of the solvent 220 and the stripped coating layer 110 that are downwardly passed.

The cleaning unit 330 is a component provided to remove and clean the solvent agent 220 adhered to the surface of the metal piece 100a discharged from the drain hole 240 and the coating layer 110 which is not completely removed, And a plurality of spray nozzles for spraying water at a predetermined pressure.

1 and 2, a cleaning module 350, which is capable of cleaning the metal piece 100a by generating a vortex with a propeller connected to a power device such as a motor, (300) and the dewatering unit (400). In this way, the transfer and washing of the metal piece 100a are performed at the same time, so that manpower can be reduced through automation and labor intensity of the worker can be reduced.

When a plurality of coating agent rejects 200 are installed, a connection guide 340 for fully guiding the metal pieces 100a discharged from each drain hole 240 to the conveyance unit 300 is connected to the drain hole 240, (300).

The dewatering unit 400 is a component that removes residues adhering to the surface of the metal piece 100a by centrifugal force in order to facilitate the recycling of the metal piece 100a, So that the metal piece 100a is dewatered by a principle similar to that of an electric washing machine. Here, the residue refers to the solvent 220, the water or the coating layer 110, etc., and most of the residue can be removed through the dehydrating part 400.

As shown in FIGS. 1 and 2, when the dewatering unit 400 is composed of a plurality of dewatering units 400, the metal pieces 100a transferred from the other end of the transfer unit 300 are received, A distributor 410 capable of distributing the piece 100a can be installed between the transfer unit 300 and the dewatering unit 400. [

When the residues are removed through the dewatering unit 400, only the pure metal remains, so that the melting operation, which is essentially followed by the subsequent operation for recycling the metal piece 100a after the completion of all operations according to the present invention, is facilitated .

The compression unit 500 is a component for making the metal piece 100a into a metal lump 100b of a predetermined size so that the dehydrated metal piece 100a can be easily transported, 400 and the metal pieces 100a transferred from the dewatering unit 400 can be gathered together as a result of pressure applied from all directions, 500).

3, the compression unit 500 according to the embodiment of the present invention may include a hopper 510, a vibrator 512, a radiator 520, a hydraulic pressure compressor 530, and the like .

Here, the hopper 510 has a funnel shape so that the metal piece 100a can be easily received from the dewatering unit 400 through a transfer device such as a hoist.

The vibrator 512 is provided at one side of the hopper 510 so that the metal piece 100a inserted into the hopper 510 can be smoothly moved downward by vibrating the hopper 510.

The hopper 510 is provided to feed the metal piece 100a dropped to the lower side of the hopper 510 to the hydraulic press 530. The hopper 510 has one end positioned at the lower end of the hopper 510 and the other end connected to the hydraulic press 530 And is disposed at an adjacent position to transport the metal piece 100a.

The hydraulic presser 530 is installed at the lower end of the radiator 520 and receives the metal piece 100a delivered from the radiator 520 through the open upper surface thereof, The received metal piece 100a can be compressed into a metal lump having a predetermined size.

The metal piece 100a can be formed as a metal ingot 100b through a series of processes through the compression unit 500 having such a configuration and this contributes to an increase in ease of carrying, loading and management of the metal piece 100a In addition, automation can be achieved through proper control of the radiator 520 and the hydraulic pressure compressor 530.

The filter unit 600 shown in FIGS. 1 and 2 is a filter unit that removes the solvent from the mixture of the metal pieces 100a, the solvent 220, and the stripped coating layer 110 discharged from the drain 240 of the coating agent rejection 200 (220) is recovered and re-supplied to the coating agent rejection (200), and at the same time, the removed coating layer (110) is collected.

The filter unit 600 in the embodiment of the present invention may include a tank-shaped sedimentation tank 610 and a scraper tank 620 connected to the lower end of the sedimentation tank 610.

The sedimentation tank 610 is connected to the receiving part 320 of the transfer part 300 so as to communicate with the pipe so that the solvent agent 220 and the stripped coating layer 110 are sent out from the receiving part 320 through a pump or the like The sedimentation tank 610 is also connected to the dewatering unit 400 so that the dewatered solvent 220 and the coating layer 110 are pumped to the dewatering unit 400 to recover the more perfect solvent agent 220 and the coating layer 110. Further, And the like.

At this time, the solvent agent 220 is deposited on the top of the sedimentation tank 610 of the filter unit 600, and the coating layer 110 is deposited on the bottom of the sedimentation tank 610. Then, after the sedimentation tank 610 and the coating agent rejection 200 are communicably connected to each other through a pipe, only the solvent agent 220 located at the upper side is recovered and reintroduced to the coating agent rejection 200.

The filter unit 600 may include a scraper tank 620 connected to the lower end of the sedimentation tank 610 to extract the deposited coating layer 110 under the sedimentation tank 610.

The scraper tank 620 is made up of a scraper conveyor as a whole and is provided at one end thereof with a scraper tank 620 for discharging a small amount of the solvent agent 220 and a large amount of the solvent from the bottom of the sedimentation tank 610, And the mixture of the coating layer 110 is sent out through a pump or the like. Then, a liquid such as the solvent 220 is drained downward from the mixture, and a large amount of the coating layer 110 is transferred through a scraper conveyor to a collection bin at one end to be recovered. The solvent 220 discharged therefrom is returned to the settling tank 610 again.

The filter unit 600 may include only the sedimentation tank 610 to recover the solvent 220 and the coating layer 110 that have been separated up and down after a certain period of time. In the embodiment of the present invention, A plurality of different scraper tanks 620 are further provided to recover the smooth coating layer 110. The recovered coating layer 110 is also used for recycling.

The work process by the coating removal system of the metal foil surface according to the present invention will be briefly described with reference to the process block diagram shown in FIG.

First, the metal foil 100 formed with the metal layer 110 is mechanically or physically separated for recycling in a product such as an electronic product or a secondary battery.

Next, the coating agent rejection 200 is performed by crushing the metal foil 100 charged into the metal foil 100 into a metal piece 100a, and at the same time, using the solvent 220 contained in the coating layer 110 on the metal piece 100a It will be removed.

Next, the transfer unit 300 moves the metal piece 100a, which has been crushed and stripped through the coating agent rejection 200, to the dewatering unit 400 spaced apart by a predetermined distance, and further includes a cleaning unit 330 The solvent agent 220 adhered to the surface of the metal piece 100a and the coating layer 110 not completely removed are removed.

Next, the dehydrating section 400 removes the residue on the surface of the metal piece 100a by centrifugal force, thereby facilitating the recycling of the metal piece 100a.

Finally, the compression unit 500 makes the metal piece 100a into a metal block 100b of a predetermined size to facilitate transportation, loading and management.

In addition, the filter unit 600 further includes a solvent agent 220 in a mixture of the metal particles 100a discharged from the drain hole 240 of the coating agent rejection 200, the solvent agent 220, and the stripped coating layer 110 Recovered and re-supplied to the coating agent rejection 200, and the stripped coating layer 110 is collected.

According to the present invention, the metal foil 100 having the coating layer 110 formed thereon in a state where the minimized working force is applied is continuously supplied to the coating agent rejection 200, the transfer part 300, the dewatering part 400 and the compression part 500, It is possible to quickly and easily extract the recyclable metal pieces.

In addition, by implementing the wet processing method in which the coating layer 110 is removed through the solvent agent 220 rather than the dry processing method requiring melting of the base material, the operation time can be reduced while using less energy.

Although the present invention has been described in connection with certain exemplary embodiments, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. Therefore, the scope of the present invention should not be limited to the embodiments described, but should be determined by the appended claims, as well as the appended claims.

100: metal foil 100a: metal piece
100b: metal ingot 110: coating layer
200: coating material rejection 210: crushing part
220: Solvent 230: Mixed part
240: Drain hole 300:
310: Filtering hole 320:
330: Cleaning section 340: Connection guide
350: Cleaning module 400: Dewatering section
410: distributor 500: compression section
510: Hopper 512: Vibrator
520: Dispenser 530: Hydraulic press
600: filter unit 610: settling tank
620: Scraper tank

Claims (6)

A crushing part for crushing a metal foil having a coating layer formed on one surface thereof into a metal piece; a solvent agent contained in the metal foil for removing the coating layer; a coating layer of the crushed metal piece; A coating agent rejection consisting of a mixed portion;
A transferring part for transferring the metal piece from one end to the other end;
A dewatering unit that receives the metal fragments from the other end of the transfer unit and removes the residues adhering to the surface of the metal fragments by centrifugal force;
A filter unit connected to each of the coating agent rejection unit, the transfer unit and the dehydrating unit, for discharging the mixture containing the solvent agent and the detached coating layer, extracting the coating layer and re- ; And
And a compression unit that receives the debris from the dewatering unit and compresses the debris into a metal lump having a predetermined size,

Wherein the compression unit comprises:
A hopper which receives the metal piece from the dehydrating part;
A vibrator provided at one side of the hopper to vibrate the hopper so that the metal piece can smoothly move downward;
A radiator having one end positioned at a lower end of the hopper and moving the metal piece inserted through the hopper outward; And
And a hydraulic pressure compressor installed at a position adjacent to the other end of the radiator and adapted to receive the metal piece transferred from the radiator and compress the metal piece into a metal lump having a predetermined size,
The hopper is formed in a funnel shape so that the metal pieces can be easily transferred from the dewatering unit through the hoist transfer device,

The filter unit includes:
A tank-shaped sedimentation tank;
And a plurality of scraper tanks connected to the bottom of the sedimentation tank,
The solvent is moved to the upper part of the sedimentation tank of the filter part with time and the stripped coating layer is deposited at the lower part so that only the solvent agent located above the sedimentation tank is recovered and re-
The scraper tank is used to extract the deposited coating layer below the settling tank,

Wherein the solvent contained in the coating rejection comprises 98 wt% of water and 2 wt% of glacial acetic acid.
The method according to claim 1,
Wherein the transfer unit further comprises a cleaning unit installed along the transfer line for cleaning the surface of the metal piece to be transferred.
delete 3. The method of claim 2,
Wherein the transfer unit is formed by a screw conveyor system to smoothly transfer the metal pieces.
delete delete

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