KR102615666B1 - Multi-stage drying apparatus for waste battery pulverized material for recycling waste battery - Google Patents

Abstract

The present invention relates to a multi-stage drying device for shredded waste batteries for recycling waste batteries, comprising: a drying chamber (10) in which shredded waste batteries are dried; a waste battery supply pipe (20) that supplies the waste battery waste material to the drying chamber (10); It includes a dry powder collection box (30) for collecting the dried waste battery dry powder (B) at the lower part of the drying chamber (10), and the drying chamber (10) has a pulverized material inlet (111) formed on the plate surface. A chamber frame 100 having a chamber upper plate 110; a plurality of drying layers (200, 200a, 200b,,, 200n) stacked on the lower part of the chamber top plate 110 and allowing the shredded waste battery material introduced into the shredded material inlet 111 to move downward and dry; A pulverized material agitator 300 that rotates within the plurality of drying layers (200, 200a, 200b,,, 200n) and agitates and transports the pulverized waste battery material so that the pulverized waste battery material introduced from the upper layer is dried and transferred to the lower layer. and; A drying layer that is coupled to the plurality of drying layers (200, 200a, 200b,,, 200n) and applies heat to dry the waste battery shredded material transported along the plurality of drying layers (200, 200a, 200b,,, 200n). It includes a heating unit 400, and the plurality of drying layers (200, 200a, 200b,,, 200n) have outlets (213, 215) through which waste battery shredded material (A) is discharged to the lower layer on the plate surface along the outer periphery in the height direction. It is characterized by being formed alternately through and in the central area.

Description

{Multi-stage drying apparatus for waste battery pulverized material for recycling waste battery}

The present invention relates to a multi-stage drying device for pulverized waste batteries, and more specifically, to a multi-stage drying device for pulverized waste batteries that effectively dries moisture and unnecessary components in the pulverized waste batteries for waste battery recycling.

In general, a secondary battery refers to a battery that can be recharged and used repeatedly, and is also called a rechargeable battery or storage battery.

Taking lithium-ion secondary batteries as an example, the composition and valuable metal content vary depending on the manufacturer or model, but can be broadly divided into four main parts: anode, cathode, electrolyte, and separator.

Lithium-ion secondary batteries are classified into cylindrical and prismatic depending on the external shape. Depending on the type and shape of the electrolyte, lithium-ion secondary batteries (LIB) have a liquid electrolyte and lithium polymer batteries (LIPB) have a gel or polymer electrolyte. It is also classified as:

Lithium-ion secondary batteries are made by assembling a positive electrode material, a negative electrode material, an electrolyte, and a separator. These four major materials, the positive electrode material, the negative electrode material, the electrolyte, and the separator, account for 50% of the total production cost, and the cost composition of the material portion is The anode material accounts for 44%, the separator 14%, the anode material 10%, and the electrolyte 7%.

The composition of the lithium ion secondary battery varies depending on the manufacturer and model, but roughly calculated, external can: 12~20%, Al sheet: 3~5%, Cu sheet: 6~10%, Co: 5~15% It consists of (LiCoO2 powder: 20~30%), Li: 2~7%, carbon: 10~12%, organic solution: 15%, separator: 34%, etc.

As such, lithium-ion secondary batteries contain more expensive metals and resources than waste home appliances, so much recycling research is underway.

Among these, the positive electrode active material that makes up the positive electrode is the main object of recycling, and the most important research task in the recycling process is to recover valuable metals such as cobalt (Co), nickel (Ni), and lithium (Li) at a high recovery rate without loss. am.

The process of recycling waste batteries is to immerse the waste batteries in salt water and leave them for 5 to 15 days to discharge them, crush the discharged waste batteries, and dry the pulverized waste batteries to produce black powder (Co, Li, Ni, etc.) are obtained. Then, the black powder is classified and extracted to recover the desired anodic material.

However, in the conventional waste battery shredded material drying apparatus, a plurality of horizontal drying chambers heated using oil are arranged adjacent to each other, and the dried waste battery shredded material is moved to the adjacent drying chamber in the horizontal direction to proceed with the drying process.

In this conventional drying process, fuel such as oil is injected into each of a plurality of adjacent drying chambers, which reduces thermal efficiency, and since the drying chambers are arranged horizontally, the waste battery waste inside is moved during the process of moving to the next drying chamber. There was a problem with this not being smooth.

Republic of Korea Patent Publication No. 10-2012-0140517

The purpose of the present invention is to solve the above-mentioned problem, and to provide a waste battery that uses a plurality of drying layers arranged in a multi-stage manner so that the waste battery powder moves from the top to the bottom and the waste battery dry powder can be easily collected. A multi-stage drying device for pulverized material is provided.

Another object of the present invention is to provide a multi-stage waste battery drying device that dries shredded waste batteries using a hot wire, and improves thermal efficiency by transferring the heat generated from the hot wire to the entire drying layer.

Another object of the present invention is to provide a multi-stage waste battery drying device that can improve the collection efficiency of waste battery dry powder by forming an incline at the bottom.

Another object of the present invention is to provide a multi-stage drying device for shredded waste batteries that can prevent safety accidents that may occur during drying by discharging gases that may be generated during the drying process of shredded waste batteries.

The above objects and various advantages of the present invention will become more apparent to those skilled in the art from preferred embodiments of the present invention.

The object of the present invention can be achieved by a multi-stage drying device for shredded waste batteries for recycling waste batteries. The multi-stage drying device for shredded waste batteries of the present invention includes a drying chamber (10) in which the shredded waste batteries are dried; a waste battery supply pipe (20) that supplies the waste battery waste material to the drying chamber (10); It includes a dry powder collection box (30) for collecting the dried waste battery dry powder (B) at the lower part of the drying chamber (10), and the drying chamber (10) has a pulverized material inlet (111) formed on the plate surface. A chamber frame 100 having a chamber upper plate 110; a plurality of drying layers (200, 200a, 200b,,, 200n) stacked on the lower part of the chamber top plate 110 and allowing the shredded waste battery material introduced into the shredded material inlet 111 to move downward and dry; A pulverized material agitator 300 that rotates within the plurality of drying layers (200, 200a, 200b,,, 200n) and agitates and transports the pulverized waste battery material so that the pulverized waste battery material introduced from the upper layer is dried and transferred to the lower layer. and; A drying layer that is coupled to the plurality of drying layers (200, 200a, 200b,,, 200n) and applies heat to dry the waste battery shredded material transported along the plurality of drying layers (200, 200a, 200b,,, 200n). It includes a heating unit 400, and the plurality of drying layers (200, 200a, 200b,,, 200n) have outlets (213, 215) through which waste battery shredded material (A) is discharged to the lower layer on the plate surface along the outer periphery in the height direction. It is characterized by being formed alternately through and in the central area.

According to one embodiment, the pulverized material agitation unit 300 is a rotating shaft ( 320) and; A stirring motor 310 coupled to the upper part of the rotation shaft 320 to rotate the rotation shaft 320; It is formed to extend radially toward the outer periphery of each drying layer (200, 200a, 200b,,, 200n) along the height direction of the rotating shaft 320, and is formed along with the rotating shaft 320 to the drying layer (200, 200a, 200b, ,,200n) and a plurality of stirring blades (343, 353) rotating in the horizontal direction inside: on the bottom surface of each drying layer (200, 200a, 200b,,, 200n) below the plurality of stirring blades (343,353) It may include a plurality of stirring blades (345,355) that protrude to a reaching height and stir and move the shredded waste batteries of each drying layer (200, 200a, 200b,,, 200n) to the discharge ports (213, 215) of the corresponding layer.

According to one embodiment, the coupling angle of the plurality of stirring blades 345 and 355 coupled to the stirring blades 343 and 345 may be adjusted differently depending on the positions of the discharge ports 213 and 215.

According to one embodiment, the plurality of drying layers (200, 200a, 200b,,, 200n) each have a certain height, the discharge ports (213, 215) are formed downward and penetrate, and the rotation axis 320 is located in the central area. A bottom plate (210) provided with a rotating shaft insertion hole (211) to be inserted, and having an upper flange (221) and a lower flange (223) extending horizontally outward in a radial direction over a certain area on the outer periphery of the upper and lower surfaces; an upper side wall 220 formed at a certain height perpendicular to the outer periphery of the upper surface of the bottom plate 210; The bottom plate 210 includes a lower side wall 230 formed vertically downward at a predetermined height to have an inner diameter corresponding to the outer diameter of the upper side wall 220 on the outer periphery of the bottom plate 210, and a drying layer 200, 200 disposed on the upper side. The upper side wall 220 of the drying layer 200, 200a, 200b,, 200n disposed below is inserted into the lower side wall 230 of a, 200b,,, 200n, and a plurality of drying layers 200, 200a, 200b,,,200n) can be stacked.

According to one embodiment, the drying layer (200, 200a, 200b,,, 200n) is formed so that the bottom plate 210 is inclined in the central direction or the outer peripheral direction toward the outlet (213, 215), and each of the stirring blades The height of the plurality of stirring blades (345, 355) coupled to (343) may be formed to have different lengths so as to reach the bottom surface of the drying layer (200, 200a, 200b,,, 200n) corresponding to the inclination angle of the bottom surface. there is.

According to one embodiment, the drying layer heating unit 400 includes a heating wire 410 concentrically embedded inside the bottom plate 210 of each drying layer 200, 200a, 200b,,, 200n; It further includes a power supply unit 420 that supplies power to the heating wire 410, and the plurality of drying layers (200, 200a, 200b,,, 200n) are of the heating wire 410 embedded in the bottom plate 210. Densities may be different.

According to one embodiment, the upper side wall 220 of the plurality of drying layers (200, 200a, 200b,,, 200n) is provided to dry the waste battery shredded material in each drying layer (200, 200a, 200b,,, 200n). a plurality of gas outlets 240 for discharging exhaust gases generated during the process; It further includes a gas outlet 500 that discharges the exhaust gas discharged from the gas outlet 240 to the outside, and the gas outlet 500 is coupled to a gas outlet connected to the plurality of gas outlets 240. Tube (510); A gas transfer pipe (520) connected to a plurality of gas outlet coupling pipes (510) through which exhaust gas is transferred; an air purifier 530 coupled to the gas transfer pipe 520 to remove dust and harmful substances contained in the exhaust gas; A gas discharge fan 540 coupled to one side of the air purifier 530 to apply pressure so that the exhaust gas is transferred to the gas transfer pipe 520; It may include a gas exhaust pipe 550 that discharges the purified gas purified in the air purifier 530 to the outside.

Accordingly, it is possible to solve the inconvenience of having difficulty moving the shredded waste batteries through a plurality of horizontally arranged drying chambers.

In addition, since a plurality of drying layers are arranged vertically in one drying chamber, the heat of each layer is transferred to the upper part, thereby saving the energy required to dry the shredded waste battery material.

In particular, since the bottom plate is heated using a heating wire to dry the waste battery powder, internal temperature control is easy and fuel costs are lower than oil.

In addition, each drying layer is stacked on top of each other, making it easy to assemble and disassemble, and has the advantage of being able to adjust the size of the drying chamber depending on the amount of shredded waste batteries input.

In addition, there is an advantage that valuable metals such as cobalt (Co), nickel (Ni), and lithium (Li) can be collected at a high recovery rate without loss as moisture and unnecessary components are dried efficiently in the multi-stage drying layer.

1 is a perspective view showing the configuration of a multi-stage drying device for shredded waste batteries according to the present invention;
Figure 2 is a cross-sectional view showing the cross-sectional configuration of a multi-stage drying device for shredded waste batteries according to the present invention;
Figure 3 is an exploded perspective view showing the configuration of the multi-stage drying device for shredded waste batteries according to the present invention;
Figure 4 is a plan view showing the plan configuration of the upper and lower drying layers of the multi-stage drying device for shredded waste batteries according to the present invention;
Figure 5 is an exemplary diagram showing the combined structure of the stirring blade and the stirring blade of the multi-stage drying device for shredded waste batteries according to the present invention;
Figure 6 is a schematic diagram schematically showing the cross-sectional configuration of a multi-stage drying device for shredded waste batteries according to another embodiment of the present invention;
Figure 7 is a cross-sectional view showing the cross-sectional configuration of a multi-stage drying device for shredded waste batteries according to another embodiment of the present invention.

In order to fully understand the present invention, preferred embodiments of the present invention will be described with reference to the accompanying drawings. Embodiments of the present invention may be modified in various forms, and the scope of the present invention should not be construed as being limited to the embodiments described in detail below. This example is provided to more completely explain the present invention to those with average knowledge in the art. Therefore, the shapes of elements in the drawings may be exaggerated to emphasize a clearer description. It should be noted that identical members in each drawing may be indicated by the same reference numerals. Detailed descriptions of well-known functions and configurations that are judged to unnecessarily obscure the gist of the present invention are omitted.

Figure 1 is a perspective view showing the configuration of a multi-stage drying device (1) for shredded waste batteries according to the present invention, Figure 2 is a cross-sectional view showing the configuration of the multi-stage drying device (1) for shredded waste batteries, and Figure 3 is a cross-sectional view showing the configuration of the multi-stage drying device (1) for shredded waste batteries. It is an exploded perspective view showing the combined structure of the chamber top plate 110 and the drying layers (200, 200a), and Figure 4 is a plan view showing the plan configuration of a pair of drying layers (200, 200a) arranged up and down.

As shown, the multi-stage waste battery drying device (1) according to the present invention includes a drying chamber (10) in which the waste battery shredder (A) is dried, and the waste battery shredder (A) is dried using the drying chamber (10). It includes a waste battery pulverized material supply pipe 20 that supplies and a dry powder collection box 30 provided at the lower part of the drying chamber 10 to collect the dried waste battery dry powder (B).

The drying chamber 10 of the present invention includes a chamber top plate 110 and a plurality of drying layers (200, 200) that are stacked in multiple stages on the lower part of the chamber top plate 110 and allow the waste battery shredded material (A) to be dried and moved from the top to the bottom. It consists of a,200b,,,200n).

Here, each dry layer (200, 200a, 200b,,, 200n) includes a pulverized material agitator 300 for transporting the pulverized waste battery material (A) so that the pulverized waste battery material (A) is stirred and moved to the lower layer, and A dry bed heating unit 400 is provided to generate heat so that the battery pulverized material (A) is dried.

The multi-stage waste battery drying device (1) according to the present invention has a chamber top plate (110) and a plurality of drying layers (200, 200a, 200b,,, 200n) stacked in a vertical direction to dry the waste battery shredder from top to bottom. (A) is dried and moved sequentially. Accordingly, there is an advantage that the waste battery shredded material can be moved more smoothly compared to the conventional drying chamber formed independently in the horizontal direction.

In addition, since a plurality of drying layers (200, 200a, 200b,,, 200n) are formed by stacking, the heat generated in each layer moves upward and is transmitted, thereby saving the energy required to dry the waste battery shredder (A). There is a possible effect.

In addition, since multiple drying layers (200, 200a, 200b,,, 200n) can be stacked as desired, the drying space can be modified to various heights and sizes depending on the amount of waste battery shredder (A) input. There is.

In addition, moisture and unnecessary components are dried in the multi-stage drying layers (200, 200a, 200b,,, 200n), and valuable metals such as cobalt (Co), nickel (Ni), and lithium (Li) are collected at a high recovery rate without loss. There are advantages to doing this.

The chamber frame 100 covers the upper part of the multi-layered drying layers 200, 200a, 200b, and 200n to maintain the overall structure of the drying chamber 10 stably. The chamber frame 100 includes a chamber top plate 110 covering the upper part of the uppermost drying layer 200, a plurality of support legs 120 coupled to the lower part of the lowermost drying layer 200n, and neighboring drying layers 200 and 200a. It includes a plurality of reinforcing shafts 130 that are coupled between , 200b,,, 200n) to reinforce the strength of the drying chamber 10.

As shown in FIG. 3, the chamber top plate 110 is provided as a disk and covers the top of the uppermost drying layer 200. The chamber upper plate 110 is provided as a disk having an outer diameter corresponding to the uppermost drying layer 200. An upper rotating shaft coupling hole 113 into which the rotating shaft 320 of the pulverized material agitator 300 is inserted is formed through the central area of the chamber upper plate 110.

In addition, a pulverized material inlet 111 through which the pulverized waste battery material A is supplied from the waste battery pulverized material supply pipe 20 is formed on the plate surface of the chamber upper plate 110. As shown in Figure 2, the waste battery shredded material (A) supplied to the shredded material inlet 111 is moved to the uppermost drying layer 200 and then dried.

A chamber support wall 112 extending vertically downward at a certain height is provided on the lower outer periphery of the chamber upper plate 110. The chamber support wall 112 is coupled to the upper side wall 220 of the uppermost drying layer 200 to ensure that the chamber support wall 112 is coupled to the uppermost drying layer 200. The chamber support wall 112 is formed to have an inner diameter corresponding to the outer diameter of the upper side wall 220 so that the uppermost dry layer 200 is fitted with the chamber top plate 110.

The plurality of support legs 120 are coupled to the lower part of the lowest drying layer 200n to form a space between the ground and the lowest drying layer 200n to accommodate the dry powder collection box 30. The plurality of support legs 120 may be fixedly coupled to the lower part of the bottom plate 210 of the lowest drying layer 200n through welding or the like.

The reinforcing shaft 130 is vertically coupled to the outer peripheral surface of the adjacent drying layers 200, 200a, 200b, 200n, to reinforce strength. The reinforcing shaft 130 is coupled between the lower flange 223 and the upper flange 221a of a pair of dry layers 200 and 200a arranged vertically, as shown in FIG. 3.

A plurality of drying layers (200, 200a, 200b,,, 200n) are stacked between the chamber top plate 110 and the support leg 120 to allow the waste battery shredded material (A) to be moved from the top to the bottom and dried. The waste battery shredded material (A) transported through the waste battery shredded material supply pipe 20 is immersed in brine for a long time, discharged, then separated from the brine and pulverized. Accordingly, the waste battery shredded material (A) contains a large amount of moisture.

In the plurality of drying layers (200, 200a, 200b,,, 200n), heat is used to dry the moisture in the waste battery shredder (A), and unnecessary components are vaporized using high heat to produce black powder (Co, Li, Ni) required for recycling. etc.) Only dry powder is obtained.

As shown in Figures 3 and 4, the drying layers (200, 200a, 200b,,, 200n) used in the drying chamber (10) of the present invention have a pair of different outlet shapes arranged alternately up and down. do. Accordingly, only the highest drying layer 200 and the second highest drying layer 200a will be described in detail.

The uppermost drying layer 200 dries the waste battery shredded material (A) supplied from the chamber upper plate 110 and discharges it to the second upper drying layer (200a). The uppermost dry layer 200 is heated by the dry layer heating unit 400 and is placed perpendicularly to the bottom plate 210, which applies heat in contact with the waste battery shredder (A), and the upper edge area of the bottom plate 210. An upper side wall 220 formed at a certain height at the top, a lower side wall 230 formed at a certain height perpendicular to the bottom border area of the bottom plate 210, and the outer periphery of the upper and lower surfaces of the bottom plate 210. It includes an upper flange 221 and a lower flange 223 that are formed horizontally with a certain area radially outward.

The bottom plate 210 is provided in the form of a disk with a certain thickness h, as shown in FIGS. 2 and 3. Inside the bottom plate 210, as shown in (a) of FIG. 4, the heating wires 410 of the dry layer heating unit 400 are provided in a concentric circular shape.

The bottom plate 210 is heated by the heat applied from the heating wire 410, and the waste battery pulverized material (A) is moved along the plate surface of the bottom plate 210 by the stirring blades 345 and 355 of the pulverized material stirring unit 300. It moves and is dried by receiving heat.

In the central area of the bottom plate 210, a rotation shaft insertion hole 211 into which the rotation shaft 320 of the pulverized material agitator 300 is inserted is formed, and on the outer peripheral surface of the bottom plate 210 along the bottom plate 210. An outer peripheral discharge port 213 is formed that discharges the moved and dried waste battery shredder (A) to the second upper drying layer (200a).

A plurality of outer peripheral smoke outlets 213 are provided at regular angular intervals to enable the waste battery shredded material (A) to be smoothly moved to the second upper drying layer (200a).

The upper side wall 220 is formed at a certain height upward perpendicular to the outer periphery of the upper surface of the bottom plate 210, and the lower side wall 230 is formed at a certain height downward perpendicular to the outer periphery of the lower surface of the floor plate 210. The upper side wall 220 and the lower side wall 230 are means for physically restraining the plurality of dry layers 200, 200a, 200b, 200n so that they can be stacked and bonded to each other.

That is, the upper side walls 220 of the drying layers 200, 200a, 200b, 200n located at the lower part are inserted into the lower side walls 230 of the drying layers 200, 200a, 200b, 200n located at the upper part. causes to be combined.

As shown in FIG. 2, the upper side wall 220 of the uppermost drying layer 200 is inserted into the chamber support wall 112 of the chamber upper plate 110, and the lower side wall 230 is of the second uppermost drying layer 200a. It is inserted into the upper side wall (220a). With this structure, the upper and lower dry layers (200, 200a, 200b,,, 200n) are inserted into each other and are physically restrained so that the combined state can be maintained.

At this time, the inner diameter of the lower side wall 230 is provided to correspond to the outer diameter of the upper side wall 220, so that they are tightly fitted to each other, so that the coupled state can be firmly maintained.

Meanwhile, an upper flange 221 and a lower flange 223 are provided horizontally in a certain area in the border areas of the upper and lower surfaces of the bottom plate 210.

As shown in Figure 3, a plurality of shaft insertion holes are formed in the upper flange 221 and the lower flange 223 at regular intervals along the circumferential direction. A reinforcing shaft 130 is coupled to the shaft insertion hole as shown in FIG. 1.

That is, the reinforcement shaft 130 is bolted between the lower flange 223 of the highest drying layer 200 and the upper flange 221a of the second highest drying layer 200a, thereby maintaining the overall structure of the drying chamber 10 stably. and strengthens the strength.

The second upper drying layer 200a has the same structure as the uppermost drying layer 200 described above, but is provided with a central outlet 215 in the central area of the bottom plate 210a. The highest drying layer 200 has an outer peripheral outlet 213 formed on the outer periphery of the bottom plate 210, but the second highest drying layer 200a has a central outlet 215 in the central area of the bottom plate 210a in a circumferential direction. There is a difference in that it is provided at regular intervals.

The difference in the positions of the discharge ports 213 and 215 of the highest drying layer 200 and the second highest drying layer 200a is the path along which the waste battery shredded material A moves from the top to the bottom from the outside to the inside, as shown in FIG. 2. This is to extend the contact time with the floor plate 210 by moving them alternately. As the contact time with the bottom plate 210 is extended, the drying efficiency of the waste battery shredded material (A) improves, and when the number of drying layers (200, 200a, 200b,,, 200n) is the same, the discharge ports (213, 215) are the same. Compared to the case where it is positioned properly, it has the effect of reducing energy consumption.

The drying layers (200, 200a, 200b,,, 200n) disposed in the drying chamber 10 are provided in an even number shape except for the chamber top 110, and the uppermost drying layer 200 is formed with an outer smoke outlet 213. and a second upper drying layer (200a) formed with a central discharge port (215) are arranged alternately. The lowest dry layer (200n) is formed with a lowest central discharge port (215n), and the spent battery dry powder (B) discharged through the lowest central discharge port (215n) is collected in the dry powder collection box (30).

The pulverized material agitator 300 is provided in each drying layer (200, 200a, 200b,,, 200n) and rotates so that the waste battery pulverized material (A) comes into contact with the bottom plate 210, dries, and is pulverized into smaller and smaller particles. Stir the waste battery shredded material (A).

As shown in FIG. 2, the pulverized material stirring unit 300 includes a rotating shaft 320 inserted through the chamber upper plate 110 and a plurality of drying layers 200, 200a, 200b,,, 200n, and a rotating shaft 320. A stirring motor 310 is provided on the upper part of the rotary shaft 320 to rotate the rotating shaft 320, and is provided corresponding to each drying layer 200, 200a, 200b, 200n along the height direction of the rotating shaft 320. ) and includes a transfer stirring unit (340,350) that rotates together and agitates the waste battery shredder (A).

The rotating shaft 320 is inserted perpendicularly into the upper rotating shaft coupling hole 113 and the rotating shaft insertion hole 211 of each drying layer (200, 200a, 200b,,, 200n) to apply the rotating force of the stirring motor 310 to each drying layer ( It is delivered to the transfer and stirring units (340,350) arranged at 200, 200a, 200b,,, 200n.

As shown in FIGS. 3 and 4, the transfer agitator units 340 and 350 are provided in the uppermost drying layer 200 where the outer peripheral outlet 213 is formed and transport the waste battery shredded material A from the center to the outer peripheral direction. It includes an outer periphery transfer agitator 340 and a central transfer agitator 350 provided in the second upper drying layer 200a where the central discharge port 215 is formed and transports the waste battery shredder (A) from the outer periphery to the center. do.

The outer peripheral transfer agitator 340 is provided in the drying layers in which the outer peripheral outlet 213 is formed, and the central transfer agitator 350 is provided in the drying layers in which the central outlet 215 is formed.

The outer peripheral transfer stirring unit 340 includes a rotation shaft coupling ring 341 coupled to the rotation shaft 320, a plurality of stirring blades 343 extending radially from the rotation shaft coupling ring 341, and each stirring blade 343. It includes a plurality of outer peripheral stirring blades 345 coupled along the longitudinal direction at the lower part.

The rotation shaft coupling ring 341 is coupled to the rotation shaft 320 and rotates at the center of the bottom plate 210 in conjunction with the rotation of the rotation shaft 320. At this time, a bearing 330 is provided in the rotation shaft insertion hole 211 of each bottom plate 210 to enable the rotation shaft coupling ring 341 to rotate smoothly.

The stirring blades 343 are formed radially at regular angle intervals from the rotation shaft coupling ring 341 and rotate together with the rotation shaft 320. The length of the stirring blade 343 is provided to correspond to the radius of the bottom plate 210.

The outer peripheral stirring blade 345 is coupled to the lower part of the stirring blade 343 and moves in contact with the bottom plate 210, and discards the waste battery shredded material (A) of the bottom plate 210 to the outer peripheral discharge port 213. While moving, the waste battery shredded material (A) continues to be in contact with the bottom plate 210 and is dried by the heat applied from the bottom plate 210.

Figure 5(a) is an exemplary diagram showing the arrangement shape of the outer peripheral stirring blade 345 of the outer peripheral transfer stirring unit 340. The outer peripheral transfer agitator 340 transports the waste battery shredded material (A) that fell to the central area of the bottom plate 210 through the central outlet 215 of the upper dry layer (200, 200a, 200b,,, 200n) to the outer peripheral portion. It must be transferred to the outer peripheral outlet (213) located at. For this purpose, the plurality of outer peripheral stirring blades 345 coupled to the stirring blades 343 are provided at an angle that can guide the waste battery shredded material (A) to be transferred to the outer peripheral edge.

The outer peripheral transfer stirring unit 340 according to a preferred embodiment of the present invention has only the first outer peripheral stirring blade 345 located on the rotating shaft coupling ring 341 side inclined at a certain angle in the clockwise direction, and the second outer peripheral mixing blade 345 is located on the rotating shaft coupling ring 341 side. All of the blades 345a to the last outer peripheral stirring blade 345n are inclined in the opposite direction to the first outer peripheral stirring blade 345.

Meanwhile, the center transfer stirring unit 350 has the same configuration as the outer peripheral transfer stirring unit 340, but the angle of the plurality of central stirring blades 355 coupled to the center stirring blade 353 is different from that of the outer peripheral transfer stirring unit 340. It is formed differently from

The central transfer agitator 350 must transfer and guide the waste battery shredded material (A) that has fallen through the outer peripheral outlet 213 of the upper layer to the central outlet 215 of the floor plate 210, so the outer peripheral transfer agitator 340 ) is provided with a central stirring blade (355) at a different angle from the outer peripheral stirring blade (345).

This is an example diagram showing the arrangement shape of the central stirring blade 355 coupled to the central stirring blade 353 in (b) of FIG. 5. When compared to Figure 5 (a), it can be seen that the arrangement angle of the central stirring blade 355 is arranged opposite to that of the outer peripheral stirring blade 345.

Here, the arrangement angles (θ1, θ2, θ3) of the outer peripheral stirring blade 345 and the central stirring blade 355 coupled to the stirring blade 343 and the central stirring blade 353 can be manually adjusted by the operator. It is well-equipped.

Additionally, in some cases, the arrangement angles (θ1, θ2, θ3) of the outer peripheral stirring blade 345 and the central stirring blade 355 may be provided to be automatically adjusted using electric means.

Here, (a) and (b) of Figures 5 show the remaining central stirring blades (355a, 355b,...355n) and the remaining outer peripheral blades excluding the first central stirring blade (355) and the first outer peripheral stirring blade (345). The stirring blades 345a, 345n were all arranged to have the same angle.

However, this is only an example, and the angles of all the stirring blades (365, 365a, 365b, ..365n) coupled to the stirring blade (363) are different depending on the positions of the outlets (213, 215) as shown in (c) of FIG. It can be provided.

The dry layer heating unit 400 heats each dry layer (200, 200a, 200b,,, 200n) so that the waste battery shredded material (A) moving along the dry layer (200, 200a, 200b,,, 200n) is heated by heat. Allows moisture to evaporate and dry. As shown in FIG. 2, the drying layer heating unit 400 includes a heating wire 410 embedded in the bottom plate 210 of each drying layer (200, 200a, 200b,,, 200n), and a heating element of each bottom plate 210. It includes a power supply unit 420 that supplies power to the heating wire 410, and a power supply line 430 connecting the power supply unit 420 and the heating wire 410.

Here, the heating wire 410 may be arranged concentrically on the bottom plate 210 of each drying layer (200, 200a, 200b,,, 200n). At this time, as shown in (a) and (b) of FIG. 4, the density of the heating wires 410 formed in different drying layers 200 and 200a may be provided differently.

In particular, the density of the heating wires 410 of the drying layer 200a located at the lower portion may be higher, and the density of the heating wires 410 of the drying layer 200 located at the upper portion may be relatively low.

This is because the heat of the drying layer 200a located at the bottom moves upward, so even if the density of the heating wires 410 of the drying layer 200 located at the top is formed low, the internal temperature can be maintained similar.

The process of drying shredded waste battery material using the multi-stage shredded waste battery drying apparatus 1 according to the present invention having this configuration will be described with reference to FIGS. 1 to 5.

As shown in FIG. 1, a waste battery pulverized material supply pipe 20 is disposed above the pulverized material inlet 111 of the drying chamber 10. The drying chamber 10 is made up of a plurality of drying layers 200, 200a, 200b, 200n, and a chamber top plate 110 is attached to the top. At this time, the plurality of drying layers (200, 200a, 200b,,, 200n), a drying layer with an outer peripheral outlet 213 and a drying layer with a central outlet 215 are alternately positioned from top to bottom.

In addition, the drying layer in which the outer peripheral discharge port 213 is formed is provided with an outer peripheral conveying and agitating section 340, and the drying layer in which the central outlet 215 is formed is provided with a central conveying and agitating section 350.

As shown in FIG. 2, when the transfer screw 21 of the waste battery pulverized material supply pipe 20 operates and the waste battery pulverized material (A) is supplied to the pulverized material inlet 111, the waste battery pulverized material (A) is It falls to the bottom plate 210 of the highest drying layer 200.

When the stirring motor 310 is driven and the rotation shaft 320 rotates, the stirring blade 343 of the outer peripheral transfer stirring unit 340 provided in the uppermost drying layer 200 also rotates. A plurality of outer peripheral stirring blades 345 provided at the lower portion of the stirring blade 343 contact the bottom plate 210 and rotate horizontally.

In this process, the waste battery shredded material (A) that falls from the pulverized material inlet 111 to the bottom plate 210 is moved toward the outer periphery by the rotating outer peripheral edge stirring blade 345 in contact with the bottom plate 210. . The heating wire 410 provided on the bottom plate 210 generates heat, and the heat is transferred to the waste battery shredder (A) through the bottom plate 210, and the waste battery shredder (A) is dried as water vapor evaporates. .

The waste battery shredded material (A) moved to the outer periphery of the bottom plate 210 falls to the outer periphery of the bottom plate 210a of the next upper drying layer 200a through the outer peripheral discharge port 213. Then, it is dried and moved to the central area of the floor plate (210a) by the center stirring blade (355) coupled to the center stirring blade (353) of the center transfer stirring unit (350) provided in the second upper drying layer (200a), It is moved to the lower drying layer (200b) through the central outlet (215).

In this way, the waste battery pulverized material (A) alternately moves from the pulverized material inlet 111 of the chamber top plate 110 from the outer periphery to the central area and then from the outer periphery to the central area, transferring heat to the bottom plates 210 and 210a. It is collected, dried, moved to the bottom, moisture evaporated, and pulverized into powder.

Then, the waste battery dry powder (B) falls into the central discharge port (215n) of the lowest drying layer (200n) and is collected in the dry powder collection bin (30).

Meanwhile, Figure 6 is a schematic diagram schematically showing the cross-sectional configuration of the drying chamber 10a according to another embodiment of the present invention.

In the drying chamber 10 according to the preferred embodiment described above, the bottom plate 210 of each drying layer 200, 200a, 200b, 200n is formed horizontally.

On the other hand, in the drying chamber 10a according to another embodiment, the bottom plates 210' and 210a' of each drying layer (200, 200a, 200b,,, 200n) are formed to be inclined at a certain angle (α). The bottom plate 210' on which the central outlet 215 is formed is inclined toward the central outlet 215, and the bottom plate 210a' on which the outer peripheral outlet 213 is formed is inclined toward the outer peripheral outlet 213. It is fully equipped.

As a result, the waste battery shredded material (A) that falls downward from the upper dry layer (200, 200a, 200b,,, 200n) naturally flows into the center outlet (215) and the outside due to the inclination angle of the bottom plate (210', 210a'). It heads to the main outlet (213).

In addition, the central stirring blades (355', 355a') of the central stirring blade (353') provided in each dry layer (200, 200a, 200b,,, 200n) and the outer peripheral stirring blade (345) of the stirring blade (343') ', 345a') are formed at different heights (h1, h2) so that they can contact the inclined floor plates (210', 210a'), so that the waste battery shredded material (A) is centered along the slope of the inclined floor plate. It is guided to move to the outlet (215) or the outer peripheral outlet (213).

Meanwhile, Figure 7 is a cross-sectional view showing the cross-sectional configuration of a drying chamber 10b according to another embodiment of the present invention.

When drying the waste battery shredded material (A) in each drying layer (200, 200a, 200b,,, 200n) of the drying chamber 10, discharge may not be completed completely or explosion may occur due to overheating.

Accordingly, the drying chamber (10b) according to another embodiment continuously discharges the exhaust gas (G) containing water vapor generated during the drying of the waste battery shredder (A) to the outside to dry the waste battery shredder (A). Ensures that the process proceeds safely.

For this purpose, as shown enlarged in FIG. 7, a gas outlet 240 is formed on the upper side wall 220 of the drying layer (200, 200a, 200b,,, 200n), and the exhaust gas (G) is discharged through the gas outlet 240. causes it to be discharged. At this time, a powder discharge prevention net 241 is formed at the gas outlet 240 to prevent waste battery pulverization (A) or waste battery dry powder (B) from being discharged through the gas outlet 240.

A plurality of gas outlets 240 are formed at different positions along the height direction of the drying chamber 10, and a gas outlet coupling pipe 510 is connected to each gas outlet 240.

The plurality of gas outlet coupling pipes 510 are connected to the gas transfer pipe 520, and the gas transfer pipe 520 is connected to the air purifier 530. The air purifier 530 is equipped with a gas discharge fan 540 to apply pressure so that the exhaust gas (G) is discharged through the gas discharge port 240.

The air purifier 530 is equipped with a plurality of filters (not shown) to remove dust and harmful substances contained in the exhaust gas (G). The purified gas (G1) purified in the air purifier 530 is exhausted into the atmosphere through the gas exhaust pipe 550.

As described above, the multi-stage drying device for shredded waste batteries according to the present invention has a plurality of drying layers stacked inside a drying chamber, so that the shredded waste batteries are moved from the top to the bottom and dried.

Accordingly, it is possible to solve the inconvenience of having difficulty moving the shredded waste batteries through a plurality of horizontally arranged drying chambers.

In addition, since a plurality of drying layers are arranged vertically in one drying chamber, the heat of each layer is transferred to the upper part, thereby saving the energy required to dry the shredded waste battery material.

In particular, since the bottom plate is heated using a heating wire to dry the waste battery powder, internal temperature control is easy and fuel costs are lower than oil.

In addition, each drying layer is stacked on top of each other, making it easy to assemble and disassemble, and has the advantage of being able to adjust the size of the drying chamber depending on the amount of shredded waste batteries input.

The embodiments of the multi-stage drying apparatus for pulverized waste batteries of the present invention described above are merely exemplary, and those skilled in the art of the present invention can make various modifications and other equivalent embodiments therefrom. You will be able to understand the point well. Therefore, it will be understood that the present invention is not limited to the forms mentioned in the detailed description above. Therefore, the true scope of technical protection of the present invention should be determined by the technical spirit of the attached patent claims. In addition, the present invention should be understood to include all modifications, equivalents and substitutes within the spirit and scope of the present invention as defined by the appended claims.

1: Multi-stage drying device for shredded waste batteries 10: Drying chamber
20: Waste battery shredded material supply pipe 21: Transfer screw
30: Dry powder collection box 100: Chamber frame
110: Chamber top 111: Crushed material inlet
112: Chamber support wall 113: Upper rotation shaft coupling hole
120: support leg 130: reinforcement shaft
200, 200a, 200b,200c..200n: dry layer 210: bottom plate
211: Rotating shaft insertion hole 213: Outer peripheral outlet
215: Center outlet 220: Upper side wall
221: upper flange 223: lower flange
230: lower side wall 240: gas outlet
241: Powder discharge prevention net 300: Grinding material stirring unit
310: stirring motor 320: rotation shaft
330: Bearing 340: Outer peripheral transfer agitation unit
341: Rotation shaft coupling ring 343: Stirring wing
345: Outer peripheral stirring blade 350: Center transfer stirring unit
351: Center rotation shaft coupling ring 353: Center stirring blade
355: Center stirring blade 400: Dry layer heating unit
410: heating wire 420: power supply unit
430: Power supply line 500: Gas discharge unit
510: gas outlet coupling pipe 520: gas transfer pipe
530: Air purifier 540: Gas discharge fan
550: gas exhaust pipe
A: Waste battery shredded material
B: Waste battery dry powder
G: exhaust gas
G1: purified gas

Claims (7)

A drying chamber (10) in which the waste battery shredded material is dried,
A waste battery supply pipe (20) that supplies the waste battery waste material to the drying chamber (10);
It includes a dry powder collection box (30) for collecting the dried spent battery dry powder (B) from the lower part of the drying chamber (10),
The drying chamber 10,
A chamber frame 100 having a chamber upper plate 110 with a pulverized material inlet 111 formed on the plate surface,
A plurality of drying layers (200, 200a, 200b,,, 200n) stacked on the lower part of the chamber top plate 110 and allowing the shredded waste battery material introduced into the shredded material inlet 111 to move downward and dry,
A pulverized material agitator 300 that rotates within the plurality of drying layers (200, 200a, 200b,,, 200n) and agitates and transports the pulverized waste battery material so that the pulverized waste battery material introduced from the upper layer is dried and transferred to the lower layer. and,
A drying layer that is coupled to the plurality of drying layers (200, 200a, 200b,,, 200n) and applies heat to dry the waste battery shredded material transported along the plurality of drying layers (200, 200a, 200b,,, 200n). Includes a heating unit 400,
The plurality of dry layers (200, 200a, 200b,,, 200n) have discharge ports (213, 215) through which waste battery shredded material (A) is discharged to the lower layer on the plate surface, forming alternately through the outer periphery and central area along the height direction. And
The discharge ports 213 and 215 include an outer peripheral discharge port 213 formed on the outer periphery of the bottom plate 210 of the drying layer and a central discharge port 215 formed in the central area on the bottom plate 210,
The pulverized material stirring unit 300,
A rotating shaft 320 coupled to the chamber top plate 110 and vertically penetrating the central region of the plurality of drying layers 200, 200a, 200b, 200n,
A stirring motor 310 coupled to the upper part of the rotation shaft 320 to rotate the rotation shaft 320,
It rotates together with the rotating shaft 320 and includes a transfer stirring unit (340, 350) for agitating the shredded waste battery,
The transfer and stirring units (340, 350),
An outer peripheral transfer agitator 340 that transfers the waste battery shredded material from the center of the bottom plate 210 to the outer peripheral direction,
It includes a center transfer agitator 350 that transports the waste battery shredded material from the outer periphery of the bottom plate 210 toward the center,
The outer peripheral transfer stirring unit 340,
A rotating shaft coupling ring 341 coupled to the rotating shaft 320,
A plurality of cells extend radially along the height direction of the rotation shaft 320 toward the outer periphery of each drying layer in which the outer peripheral outlet 213 is formed and rotate in the horizontal direction within each drying layer together with the rotation shaft 320. two stirring blades (343),
The lower part of the plurality of stirring blades 343 is formed to protrude to a height that touches the bottom plate 210 of each drying layer, and is used to stir and move the waste battery shredded material of each drying layer to the outer peripheral outlet 213 of the corresponding layer. It includes a plurality of stirring blades (345),
The plurality of stirring blades 345 are,
Only the first stirring blade located on the rotary shaft coupling ring 341 is inclined at a certain angle clockwise, and all stirring blades from the second to the last stirring blade are inclined in the opposite direction to the first stirring blade,
The center transfer stirring unit 350,
A plurality of cells extend radially along the height direction of the rotation shaft 320 toward the outer periphery of each drying layer in which the outer peripheral outlet 213 is formed and rotate in the horizontal direction within each drying layer together with the rotation shaft 320. two stirring blades (353),
A plurality of stirring blades (353) are formed to protrude from the lower portion of the plurality of stirring blades (353) at a height that touches the floor plate (210) of each drying layer, and stir and move the waste battery shredded material of each drying layer to the central outlet (215) of the corresponding layer. It includes two stirring blades (355),
The coupling angle of the plurality of stirring blades 345 and the plurality of stirring blades 355 respectively coupled to the stirring blade 343 and the stirring blade 353 is adjusted by an electric means, and the outer peripheral outlet 213 and is adjusted differently depending on the location of the central outlet 215,
The plurality of drying layers (200, 200a, 200b,,, 200n) each have a certain height, and the outer peripheral outlet 213 and the central outlet 215 are formed downward and penetrate, and the rotation axis ( A bottom plate (210) is provided with a rotation axis insertion hole (211) into which 320) is inserted, and is provided with an upper flange (221) and a lower flange (223) extending horizontally over a certain area radially outward on the outer periphery of the upper and lower surfaces. )class,
An upper side wall 220 formed at a certain height perpendicular to the outer periphery of the upper surface of the bottom plate 210,
It includes a lower side wall 230 formed vertically downward at a certain height to have an inner diameter corresponding to the outer diameter of the upper side wall 220, on the outer periphery of the lower surface of the bottom plate 210,
The upper side wall 220 of the drying layer (200, 200a, 200b,,, 200n) disposed at the lower portion is inserted into the lower side wall 230 of the drying layer (200, 200a, 200b,,, 200n) disposed at the upper portion. A plurality of dry layers (200, 200a, 200b,,, 200n) are stacked and combined,
The drying layers (200, 200a, 200b,,, 200n) are formed so that the bottom plate (210) is inclined in the central or outer peripheral direction toward the outer peripheral outlet (213) and the central outlet (215),
The height of the plurality of stirring blades 345 and the plurality of stirring blades 355 respectively coupled to the stirring blade 343 and the stirring blade 353 corresponds to the inclination angle of the bottom plate 210. The drying layer ( 200, 200a, 200b,,, 200n) are formed of different lengths to reach the bottom plate 210,
The dry bed heating unit 400,
A heating wire 410 is embedded concentrically inside the bottom plate 210 of each drying layer (200, 200a, 200b,,, 200n), and a power supply unit 420 that supplies power to the heating wire 410. Includes,
The plurality of drying layers (200, 200a, 200b,,, 200n) are provided with different densities of the heating wires 410 embedded in the bottom plate 210,
The upper side wall 220 of the plurality of drying layers (200, 200a, 200b,,, 200n) contains exhaust gas generated when drying the waste battery shredder in each drying layer (200, 200a, 200b,,, 200n). A plurality of gas discharge ports 240,
It further includes a gas discharge unit 500 that discharges the exhaust gas discharged from the gas discharge port 240 to the outside,
The gas discharge unit 500,
A gas outlet coupling pipe 510 connected to the plurality of gas outlets 240,
A gas transfer pipe (520) connected to a plurality of gas outlet coupling pipes (510) through which exhaust gas is transferred,
An air purifier (530) coupled to the gas transfer pipe (520) to remove dust and harmful substances contained in the exhaust gas,
A gas discharge fan 540 coupled to one side of the air purifier 530 to apply pressure so that the exhaust gas is transferred to the gas transfer pipe 520;
A multi-stage drying device for shredded waste batteries, comprising a gas exhaust pipe (550) that discharges the purified gas purified in the air purifier (530) to the outside. delete delete delete delete delete delete