CN210535781U - Lithium battery anode material recycling device - Google Patents
Lithium battery anode material recycling device Download PDFInfo
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- CN210535781U CN210535781U CN201922026184.XU CN201922026184U CN210535781U CN 210535781 U CN210535781 U CN 210535781U CN 201922026184 U CN201922026184 U CN 201922026184U CN 210535781 U CN210535781 U CN 210535781U
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- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
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- Y02W30/84—Recycling of batteries or fuel cells
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Abstract
The utility model discloses a lithium cell cathode material recycle's device, including the cutter, the cutter passes through the inclination belt feeder and connects the tunnel furnace, and the tunnel furnace passes through the track conveyer and links to each other with the entry of ternary sieve that shakes soon, ternary shakes soon and sieves and pass through the powder delivery pump and link to each other with the depiler, the depiler passes through push pedal kiln, powder delivery pump and connects the proportioning machine, the proportioning machine passes through the powder delivery pump, joins in marriage the entry that high-speed stirring ground, vacuum drying machine and depiler and links to each other, the depiler links to each other with the burning furnace. The device of the utility model has the advantages of short treatment process, low production cost, no generation of three wastes and the like.
Description
Technical Field
The utility model relates to a lithium battery equipment technical field, in particular to lithium cell cathode material recycle's device.
Background
Lithium iron phosphate (LiFePO)4Often abbreviated as LFP) battery is the most mainstream matched battery system of early power batteries, and new energy automobiles mainly use lithium iron phosphate batteries, and the service life of the new energy automobiles is about 8 years. With the continuous growth of new energy automobiles, explosive power batteries must be decommissioned in the coming years, and if a large number of obsolete batteries cannot be correctly treated, serious environmental pollution and energy waste are brought. LiFeP04The recycling of the waste batteries can not only reduce the environmental pressure caused by a large amount of wastes, but also bring considerable economic benefits, and is beneficial to the sustainable development of the whole industry.
At present, the recovery technology of the positive electrode material of the power lithium battery mainly refers to a recovery method of the positive electrode material of the small cobalt acid lithium battery to recover and treat the positive electrode material. Firstly, carrying out pyrometallurgical calcination regeneration on waste batteries, including battery disassembly, electrode classification, active substance stripping and the like, and then carrying out hydrometallurgical recovery on valuable metals, including acid-soluble positive active substances and selective precipitation on metal manganese (nickel) and lithium in the positive active substances. The performance of the regenerated lithium ion battery is poor due to the fact that the cathode material regenerated through pyrogenic calcination contains other impurity elements such as Al with too high content. Therefore, when the later hydrometallurgical treatment method selects and uses excessive strong acid to completely leach ions in the battery, a set of aluminum removal process is added, Al is difficult to completely remove, and although the Li leaching rate is high, a large amount of alkali liquor is needed in the later period to neutralize excessive acid liquor in the earlier period, so that the process route is complex, and the cost is increased.
Therefore, the method and the device for effectively rendering the binder on the waste lithium iron phosphate pole pieces ineffective so as to separate and recycle the aluminum foil and the waste lithium iron phosphate powder are found, the Al content in the lithium iron phosphate is below 0.05 percent, the aluminum is respectively and completely recycled, the post-treatment process is short, the production cost is low, and the waste lithium iron phosphate pole piece recycling method without three wastes is a difficult problem to solve.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming the not enough of prior art, provide a lithium cell cathode material recycle's device, this device has the recovery flow short, low in production cost, does not have advantages such as "three wastes" production.
The technical scheme who solves its technical problem and take of the utility model is as follows:
lithium cell cathode material recycle's device, including the cutter, the inclination belt feeder, the tunnel furnace, the track conveyer, the ternary is shaken soon and is sieved, the aluminium foil storage tank, first lithium iron phosphate storage tank, the depiler, crucible one, push pedal kiln, the proportioning machine, the high-speed stirring mill, the cold water machine, vacuum drying machine, the depiler, forge burning furnace, pottery double roll machine, the air current breaker, permanent magnetism magnetic separator de-ironing, the ultrasonic vibration sieve, vacuum packaging machine, automatic case packer, second lithium iron phosphate storage tank, third lithium iron phosphate storage tank, crucible two, fourth lithium iron phosphate storage tank, fifth lithium iron phosphate storage tank.
Further, the shearing machine is connected with the tunnel furnace through an inclination belt conveyor, the tunnel furnace is connected with an inlet of the ternary rotary vibration sieve through a crawler conveyor, a left outlet of the ternary rotary vibration sieve is connected with an aluminum foil storage tank, and a right outlet of the ternary rotary vibration sieve is connected with a first lithium iron phosphate storage tank; the first lithium iron phosphate storage tank is connected with a material distributor through a powder conveying pump, the material distributor is connected with a pushed slab kiln, a second lithium iron phosphate storage tank is arranged on the right side of the pushed slab kiln, the second lithium iron phosphate storage tank is connected with a batching machine through the powder conveying pump, the batching machine is connected with an inlet of a high-speed stirring mill through the powder conveying pump, a vacuum drier is arranged on the left side of the high-speed stirring mill, and an outlet of the high-speed stirring mill is connected with the vacuum drier through the powder conveying pump; the vacuum dryer is connected with an inlet of the material separator through a powder conveying pump, and the material separator is connected with the calcining furnace.
Furthermore, a first crucible is placed below the right side of the outlet of the material separator, a push plate kiln is arranged on the right side of the first crucible, and the first crucible can be sent into the push plate kiln through manual or automatic crucible loading equipment.
Furthermore, a water cooler is installed on the upper side of the high-speed stirring mill and connected with the inside of the high-speed stirring mill through a cooling water pipe.
Furthermore, the vacuum dryer is connected with a third lithium iron phosphate storage tank through a powder conveying pump, the third lithium iron phosphate storage tank is connected with an inlet of the material separator through the powder conveying pump, a second crucible is placed on the left lower side of an outlet of the material separator, the second crucible is fed into the calcining furnace through manual or automatic crucible loading equipment, and the calcining furnace is connected with an inert gas inlet device.
Further, a fourth lithium iron phosphate storage tank is arranged on the right side of the calcining furnace and connected with a ceramic double-roll machine through a powder conveying pump, and the ceramic double-roll machine is connected with an airflow crusher through the powder conveying pump.
Further, the air current breaker passes through the powder delivery pump and connects the fifth lithium iron phosphate storage tank, and the fifth lithium iron phosphate storage tank passes through the powder delivery pump and links to each other with the feeder hopper of permanent magnetism deironing machine, the export of permanent magnetism deironing machine passes through the powder delivery pump and links to each other with the feeder hopper of being connected ultrasonic vibration sieve, and the export of ultrasonic vibration sieve passes through the powder delivery pump and links to each other with vacuum packaging machine.
The working steps of the lithium battery anode material recycling device are as follows:
the first step is as follows: shearing: shearing the anode material of the retired lithium iron phosphate battery into fragments with the length of 15-30 cm, and simultaneously separating the sheared anode pieces into loose shapes.
The second step is that: pretreatment: and (4) placing the loose positive plate obtained in the step one into a tunnel furnace, and heating the tunnel furnace at the temperature of 350-450 ℃ to obtain the calcined positive plate.
The third step: rapping separation: and (3) putting the calcined positive plate obtained in the step two into a vibrating screen in batches, adding 5-15 kg of steel balls with different particle sizes and diameters of 5-15 mm respectively, and performing vibrating screening, wherein the upper surface of the vibrating screen is provided with aluminum foil, and the lower surface of the vibrating screen is provided with waste lithium iron phosphate powder.
The fourth step: oxidizing and roasting: and (3) placing the lithium iron phosphate waste powder obtained in the step three into a pushed slab kiln, and roasting at the roasting temperature of 650-850 ℃ for 6-15h in the atmosphere of air or oxygen to obtain roasted sand.
The fifth step: preparing materials: and C, adding a lithium source, an iron source and a phosphorus source into the calcine obtained in the step four to form a mixture.
And a sixth step: ball milling: and pouring the mixture obtained in the fifth step into a high-speed stirring mill added with a dispersion medium for ball milling to obtain a ball-milled mixture.
The seventh step: and (3) drying: and D, adding the ball-milled mixed material obtained in the step six into a vacuum drier for drying to obtain a dried mixed material.
Eighth step: reduction and regeneration: and adding the dried mixed material obtained in the seventh step into a calcining furnace, calcining under the protection of inert gas, wherein the sintering temperature is 750-850 ℃, and the sintering time is 18-24 h, so as to obtain an intermediate product of the lithium iron phosphate.
The ninth step; airflow crushing: and (4) carrying out coarse crushing on the lithium iron phosphate intermediate product obtained in the step eight through a ceramic double-roller machine, and then carrying out fine crushing through an airflow crusher to obtain lithium iron phosphate powder.
The tenth step: screening and deironing: and (4) screening the lithium iron phosphate powder obtained in the step nine by using a permanent magnet iron remover and an ultrasonic vibration sieve, wherein the undersize material is a lithium iron phosphate product.
Compare with current lithium iron phosphate battery cathode material reselection utilization equipment, the utility model discloses following beneficial effect has:
1. the utility model discloses lithium cell positive pole material is selected back and is utilized the device, mainly used handles retired lithium iron phosphate battery positive pole material, the waste material that also can be used to handle production in the lithium iron phosphate production process, lithium iron phosphate pole piece prepare into the waste pole piece that the battery in-process produced or the positive pole material that garrulous waste piece material separated, through the utility model discloses Al content is below 0.05% in the lithium iron phosphate waste powder after the device is handled, the accessory product aluminium foil does not contain the lithium iron phosphate powder, can regard as the product takeaway, the pollution of lithium iron phosphate battery positive pole material to the environment has been stopped.
2. The utility model discloses the device passes through the oxidizing roasting and will select separately the positive electrode material and detach the adhesive to realize LiFeP0 simultaneously4Respectively adding a carbon source and an activator such as glycerol as reducing agents into the raw materials of the regeneration reaction, and regenerating LiFeP0 by high-temperature carbothermal reduction at the temperature of 750-850 DEG C4The regenerated material has strong controllability and simple process flow.
3. The utility model discloses the device belongs to pyrogenic process prosthetic devices, only needs to supply a small amount of Li, Fe, P element, does not need a large amount of acid-base reagent, and waste liquids such as the waste acid alkali waste of production are few, and are friendly to the environment.
The utility model discloses the device adopts complete pyrometallurgical direct restoration to select separately, edulcoration, supplementary element source, regeneration to retired lithium iron phosphate battery cathode material based on lithium iron phosphate cathode material's preparation principle, has that the processing procedure is short, low in production cost, does not have advantages such as "three wastes" production, and product electrochemical performance reaches the lithium iron phosphate battery material requirement of selling on the market, and application prospect is very wide.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
The reference numbers are as follows: 1. a shearing machine; 2. an inclination belt conveyor; 3. a tunnel furnace; 4. a crawler conveyor; 5. three-element rotary vibration sieve; 6. an aluminum foil storage tank; 7. a lithium iron phosphate storage tank; 8. a material separating machine; 9. a crucible; 10. a pusher kiln; 11. a dosing machine; 12. stirring and grinding at a high speed; 13. a water chiller; 14. a vacuum drier; 15. a material separating machine; 16. a calciner; 17. a ceramic double-roll machine; 18. an airflow crusher; 19. a permanent magnet iron remover; 20. an ultrasonic vibration sieve; 21. a vacuum packaging machine; 22. automatic box filling machine; 23. a second lithium iron phosphate storage tank; 24. a third lithium iron phosphate storage tank; 25. a second crucible; 26. a fourth lithium iron phosphate storage tank; 27. and a fifth lithium iron phosphate storage tank.
Detailed Description
In order to make the technical problem, technical solution and advantageous effects solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1, the apparatus for recycling a lithium battery positive electrode material includes a shearing machine 1, an inclination belt conveyor 2, a tunnel furnace 3, a track conveyor 4, a ternary rotary vibrating screen 5, an aluminum foil storage tank 6, a first lithium iron phosphate storage tank 7, a material separator 8, a first crucible 9, a pusher kiln 10, a material distributor 11, a high-speed stirring mill 12, a water cooler 13, a vacuum dryer 14, a material separator 15, a calcining furnace 16, a ceramic counter roll machine 17, an airflow crusher 18, a permanent magnet iron remover 19, an ultrasonic vibrating screen 20, a vacuum packaging machine 21, an automatic boxing machine 22, a second lithium iron phosphate storage tank 23, a third lithium iron phosphate storage tank 24, a second crucible 25, a fourth lithium iron phosphate storage tank 26, and a fifth lithium iron phosphate storage tank 27.
The shearing machine 1 is connected with a tunnel furnace 3 through an inclination belt conveyor 2, the tunnel furnace is connected with an inlet of a ternary rotary vibration sieve 5 through a crawler conveyor 4, a left outlet of the ternary rotary vibration sieve 5 is connected with an aluminum foil storage tank 6, and a right outlet of the ternary rotary vibration sieve 5 is connected with a first lithium iron phosphate storage tank 7.
First lithium iron phosphate storage tank 7 passes through the powder delivery pump and links to each other with depiler 8, and crucible one 9 has been placed to the right side below the 8 exports of depiler, the right side of crucible one 9 is equipped with push pedal kiln 10, crucible one 9 can be sent into inside push pedal kiln 10 through artifical or automatic dress crucible equipment.
The right side of pushed bat kiln 10 is equipped with second lithium iron phosphate storage tank 23, and second lithium iron phosphate storage tank 23 passes through the powder delivery pump and connects proportioning machine 11, proportioning machine 11 passes through the powder delivery pump and links to each other with the entry of joining in marriage high-speed stirring mill 12, cold water machine 13 is installed to the upside that high-speed stirring mill 12, cold water machine 13 passes through condenser tube and grinds 12 inside continuous with high-speed stirring. The left side of the high-speed stirring mill 12 is provided with a vacuum drier 14, and the outlet of the high-speed stirring mill 12 is connected with the vacuum drier 14 through a powder delivery pump.
The vacuum dryer 14 is connected with a third lithium iron phosphate storage tank 24 through a powder conveying pump, the third lithium iron phosphate storage tank 24 is connected with an inlet of the material separator 15 through the powder conveying pump, a second crucible 25 is placed on the left lower side of an outlet of the material separator 15, the second crucible 25 is fed into the calcining furnace 16 through manual or automatic crucible loading equipment, and the calcining furnace 16 is connected with an inert gas inlet device.
A fourth lithium iron phosphate storage tank 26 is arranged on the right side of the calcining furnace 16, the fourth lithium iron phosphate storage tank 26 is connected with the ceramic double-roll machine 17 through a powder conveying pump, and the ceramic double-roll machine 17 is connected with the airflow crusher 18 through the powder conveying pump. The airflow crusher 18 is connected with an air compressor, a cold dryer and a hot dryer in a matching way.
The process for recycling the anode material of the retired lithium iron phosphate battery by adopting the device comprises the following steps:
the first step is as follows: shearing: the anode material of the retired lithium iron phosphate battery is cut into pieces with the length of 15-30 cm through a shearing machine 1, and meanwhile, the cut anode pieces are separated into loose pieces.
The second step is that: pretreatment: and (3) placing the loose anode plate obtained in the step one into a tunnel furnace 3 for calcination, and heating the tunnel furnace 3 at the temperature of 350-450 ℃ to obtain the calcined anode plate.
The third step: rapping separation: and (3) putting the calcined positive plate obtained in the step two into a vibrating screen 9 in batches, adding 5-15 kg of steel balls with different particle sizes and diameters of 5-15 mm respectively, vibrating, and screening, wherein the upper surface of the vibrating screen 9 is aluminum foil, and the lower surface of the vibrating screen 9 is waste lithium iron phosphate powder.
The fourth step: oxidizing and roasting: and (3) placing the crucible containing the waste powder in the step three into a pushed slab kiln 10, and roasting at the roasting temperature of 650-850 ℃ for 6-15h under the atmosphere of air or oxygen to obtain the roasted sand.
The fifth step: preparing materials: adding a lithium source, an iron source and a phosphorus source into the calcine obtained in the step four, adding a carbon source, an activating agent, glycerol and other reducing agents, and batching in a batching machine 11.
And a sixth step: ball milling: pouring the ingredients obtained in the step five into a high-speed stirring mill 12 added with a dispersion medium for ball milling;
the seventh step: and (3) drying: and adding the ball-milled mixed material obtained in the step six into a vacuum drier 14 for drying.
Eighth step: reduction and regeneration: and adding the dried mixed material obtained in the seventh step into a calcining furnace 16, calcining in the calcining furnace 16 under the protection of inert gas, wherein the sintering temperature is 750-850 ℃, and the sintering time is 18-24 hours, so as to obtain an intermediate product of the lithium iron phosphate.
The ninth step; airflow crushing: and (4) roughly crushing the lithium iron phosphate intermediate product obtained in the step eight by using a ceramic double-roller machine 17, and finely crushing by using an airflow crusher 18 to obtain lithium iron phosphate powder.
The tenth step: screening and deironing: and (4) screening the lithium iron phosphate powder obtained in the step nine by using a permanent magnet iron remover 19 and an ultrasonic vibration sieve 20, wherein the undersize material is a lithium iron phosphate product.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (7)
1. Lithium cell cathode material recycle's device, its characterized in that: the device comprises a shearing machine, an inclination belt conveyor, a tunnel furnace, a crawler conveyor, a ternary rotary vibration sieve, an aluminum foil storage tank, a first lithium iron phosphate storage tank, a material separator, a first crucible, a push plate kiln, a batching machine, a high-speed stirring mill, a water cooler, a vacuum dryer, a material separator, a calcining furnace, a ceramic counter roll machine, an airflow crusher, a permanent magnet iron remover, an ultrasonic vibration sieve, a vacuum packaging machine, an automatic box filling machine, a second lithium iron phosphate storage tank, a third lithium iron phosphate storage tank, a second crucible, a fourth lithium iron phosphate storage tank and a fifth lithium iron phosphate storage tank.
2. The apparatus for recycling a positive electrode material for a lithium battery according to claim 1, wherein: the shearing machine is connected with the tunnel furnace through the inclination belt conveyor, the tunnel furnace is connected with an inlet of the ternary rotary vibration sieve through the crawler conveyor, a left outlet of the ternary rotary vibration sieve is connected with the aluminum foil storage tank, and a right outlet of the ternary rotary vibration sieve is connected with the first lithium iron phosphate storage tank; the first lithium iron phosphate storage tank is connected with a material distributor through a powder conveying pump, the material distributor is connected with a pushed slab kiln, a second lithium iron phosphate storage tank is arranged on the right side of the pushed slab kiln, the second lithium iron phosphate storage tank is connected with a batching machine through the powder conveying pump, the batching machine is connected with an inlet of a high-speed stirring mill through the powder conveying pump, a vacuum drier is arranged on the left side of the high-speed stirring mill, and an outlet of the high-speed stirring mill is connected with the vacuum drier through the powder conveying pump; the vacuum dryer is connected with an inlet of the material separator through a powder conveying pump, and the material separator is connected with the calcining furnace.
3. The apparatus for recycling a positive electrode material for a lithium battery according to claim 2, wherein: a first crucible is placed below the right side of the outlet of the material distributor, a push plate kiln is arranged on the right side of the first crucible, and the first crucible can be sent into the push plate kiln through manual or automatic crucible loading equipment.
4. The apparatus for recycling a positive electrode material for a lithium battery according to claim 2, wherein: and the upper side of the high-speed stirring mill is provided with a water cooler, and the water cooler is connected with the inside of the high-speed stirring mill through a cooling water pipe.
5. The apparatus for recycling a positive electrode material for a lithium battery according to claim 2, wherein: the vacuum dryer is connected with a third lithium iron phosphate storage tank through a powder conveying pump, the third lithium iron phosphate storage tank is connected with an inlet of the material separator through the powder conveying pump, a second crucible is placed on the left lower side of an outlet of the material separator, the second crucible is fed into the calcining furnace through manual or automatic crucible loading equipment, and the calcining furnace is connected with an inert gas inlet device.
6. The apparatus for recycling a positive electrode material for a lithium battery according to claim 2, wherein: and a fourth lithium iron phosphate storage tank is arranged on the right side of the calcining furnace and is connected with a ceramic double-roll machine through a powder conveying pump, and the ceramic double-roll machine is connected with an airflow crusher through the powder conveying pump.
7. The apparatus for recycling a positive electrode material for a lithium battery according to claim 6, wherein: the air current breaker passes through the powder delivery pump and connects fifth lithium iron phosphate storage tank, and fifth lithium iron phosphate storage tank passes through the powder delivery pump and links to each other with the feeder hopper of permanent magnetism deironing machine, the export of permanent magnetism deironing machine passes through the powder delivery pump and links to each other with the feeder hopper of being connected ultrasonic vibration sieve, and the export of ultrasonic vibration sieve passes through the powder delivery pump and links to each other with vacuum packaging machine.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922026184.XU CN210535781U (en) | 2019-11-21 | 2019-11-21 | Lithium battery anode material recycling device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201922026184.XU CN210535781U (en) | 2019-11-21 | 2019-11-21 | Lithium battery anode material recycling device |
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| CN210535781U true CN210535781U (en) | 2020-05-15 |
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