CN215089693U - Electrode powder recovery system by low-temperature evaporation of waste lithium batteries - Google Patents
Electrode powder recovery system by low-temperature evaporation of waste lithium batteries Download PDFInfo
- Publication number
- CN215089693U CN215089693U CN202120309859.6U CN202120309859U CN215089693U CN 215089693 U CN215089693 U CN 215089693U CN 202120309859 U CN202120309859 U CN 202120309859U CN 215089693 U CN215089693 U CN 215089693U
- Authority
- CN
- China
- Prior art keywords
- low
- temperature evaporation
- crushing
- gas
- waste
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn - After Issue
Links
- 238000001704 evaporation Methods 0.000 title claims abstract description 52
- 230000008020 evaporation Effects 0.000 title claims abstract description 51
- 238000011084 recovery Methods 0.000 title claims abstract description 44
- 239000000843 powder Substances 0.000 title claims abstract description 43
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 31
- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 31
- 239000002699 waste material Substances 0.000 title claims description 25
- 239000007789 gas Substances 0.000 claims abstract description 38
- 239000000428 dust Substances 0.000 claims abstract description 33
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 19
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 19
- 239000011261 inert gas Substances 0.000 claims abstract description 19
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 17
- 229910052802 copper Inorganic materials 0.000 claims abstract description 17
- 239000010949 copper Substances 0.000 claims abstract description 17
- 239000000463 material Substances 0.000 claims description 43
- 239000002912 waste gas Substances 0.000 claims description 35
- 238000012216 screening Methods 0.000 claims description 30
- 238000005406 washing Methods 0.000 claims description 20
- 238000000227 grinding Methods 0.000 claims description 19
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 16
- 239000000126 substance Substances 0.000 claims description 15
- 239000003792 electrolyte Substances 0.000 claims description 12
- 239000000203 mixture Substances 0.000 claims description 12
- 238000001179 sorption measurement Methods 0.000 claims description 12
- 238000001035 drying Methods 0.000 claims description 11
- 238000000926 separation method Methods 0.000 claims description 11
- 229910000831 Steel Inorganic materials 0.000 claims description 8
- JRBRVDCKNXZZGH-UHFFFAOYSA-N alumane;copper Chemical compound [AlH3].[Cu] JRBRVDCKNXZZGH-UHFFFAOYSA-N 0.000 claims description 8
- 239000010959 steel Substances 0.000 claims description 8
- 229910052799 carbon Inorganic materials 0.000 claims description 7
- 239000004033 plastic Substances 0.000 claims description 7
- 229920003023 plastic Polymers 0.000 claims description 7
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 6
- 230000000694 effects Effects 0.000 claims description 5
- 238000007885 magnetic separation Methods 0.000 claims description 5
- 238000004880 explosion Methods 0.000 claims description 3
- 239000004519 grease Substances 0.000 claims description 3
- 229910052757 nitrogen Inorganic materials 0.000 claims description 3
- 239000002245 particle Substances 0.000 claims description 3
- 238000009834 vaporization Methods 0.000 claims description 3
- 230000008016 vaporization Effects 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 239000002351 wastewater Substances 0.000 abstract description 3
- HGUFODBRKLSHSI-UHFFFAOYSA-N 2,3,7,8-tetrachloro-dibenzo-p-dioxin Chemical compound O1C2=CC(Cl)=C(Cl)C=C2OC2=C1C=C(Cl)C(Cl)=C2 HGUFODBRKLSHSI-UHFFFAOYSA-N 0.000 abstract description 2
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 12
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 7
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 7
- 229910052751 metal Inorganic materials 0.000 description 7
- 239000002184 metal Substances 0.000 description 6
- 150000002739 metals Chemical class 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- 229910000040 hydrogen fluoride Inorganic materials 0.000 description 5
- 239000004411 aluminium Substances 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 229910052759 nickel Inorganic materials 0.000 description 4
- 238000003723 Smelting Methods 0.000 description 3
- 239000010941 cobalt Substances 0.000 description 3
- 229910017052 cobalt Inorganic materials 0.000 description 3
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 3
- 230000001698 pyrogenic effect Effects 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 238000010008 shearing Methods 0.000 description 2
- DLYUQMMRRRQYAE-UHFFFAOYSA-N tetraphosphorus decaoxide Chemical compound O1P(O2)(=O)OP3(=O)OP1(=O)OP2(=O)O3 DLYUQMMRRRQYAE-UHFFFAOYSA-N 0.000 description 2
- 239000010926 waste battery Substances 0.000 description 2
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 1
- 238000003915 air pollution Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004070 electrodeposition Methods 0.000 description 1
- 239000008151 electrolyte solution Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000005342 ion exchange Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- -1 lithium hexafluorophosphate Chemical compound 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 239000011572 manganese Substances 0.000 description 1
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 230000036632 reaction speed Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
Images
Landscapes
- Processing Of Solid Wastes (AREA)
- Secondary Cells (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The utility model relates to an old and useless lithium cell low temperature evaporation retrieves electrode powder system, include: the system comprises a disassembling system, a crushing system, a low-temperature evaporation system, a sorting system, a dust removal system, a gas recovery system and an inert gas protection system; the disassembly system is connected with the crushing system, the crushing system is connected with the low-temperature evaporation system, the low-temperature evaporation system is connected with the sorting system, the gas recovery system, the low-temperature evaporation system and the inertia systemThe gas protection system is respectively connected with the crushing system, the low-temperature evaporation system and the gas recovery system, and the dust removal system is respectively connected with the crushing system and the sorting system; the utility model discloses beneficial effect that technical scheme brought: the occupied area is small; the recovery rate of the black powder is more than 98 percent. The recovery rates of copper and aluminum are > 98%. VOC in exhaust gas<50mg/m3. No dioxin is generated. No waste water is generated. The safety is high.
Description
Technical Field
The utility model belongs to the technical field of old and useless lithium cell is retrieved, specific electrode powder system is retrieved in old and useless lithium cell low temperature evaporation that says so.
Background
In 2020, the accumulated scrappage of the power lithium battery in China can reach 12-17 ten thousand tons, the theoretical scrappage of the power lithium battery is increased from 18.91Gwh in 2020 to 105.3Gwh in 2025, the waste lithium battery contains metals and organic matters such as cobalt, nickel, manganese, lithium, iron, aluminum and the like, the average content of lithium in the ternary battery is 1.9%, the content of nickel is 9%, the content of cobalt is 3%, the content of manganese is 4%, the content of copper is 13.3%, the content of aluminum is 12.7%, and the like. The waste lithium batteries can cause huge threat and pollution to the environment if not recycled, and simultaneously are also a waste to resources.
At present, the recovery technology of waste lithium batteries mainly comprises three types: (1) a pyrogenic recovery process; (2) and (5) wet recovery process. (3) A combined treatment process of fire method and wet method.
The pyrogenic process recovery process is to treat the waste lithium ion battery by a reduction roasting mode, and a special smelting furnace is usually adopted to treat organic components such as electrolyte, plastics, binders and the like. The battery and the package are put into a smelting furnace for roasting, and pretreatment is not needed before roasting. Meanwhile, energy released by combustion of the graphite and the organic solvent can be utilized to obtain a mixture of metals such as cobalt, nickel and the like, so that the recycling of the metals is realized. The disadvantages of the pyrogenic process are: the energy consumption is large, other components in the electrolyte solution and the electrode can be converted into harmful components such as hydrofluoric acid or phosphorus pentoxide after being combusted, a large amount of waste gas is generated, the cost of tail gas treatment is increased, and simultaneously, the air pollution is easily caused.
The wet recovery process is to disassemble and pretreat the waste batteries, dissolve the waste batteries in an acid-base solution, extract part of valuable metal elements, and extract the rest valuable metals by means of an ion exchange method, electrodeposition and the like. The disadvantages are as follows: low reaction speed, small throughput, complex process, high cost and low value of recovered products.
The combined fire-wet process includes smelting furnace to eliminate electrolyte, plastic, adhesive and other organic components to obtain mixture of Co, Ni and other metals, and wet separation to extract residual valuable metals. The disadvantages are as follows: large energy consumption, large amount of waste gas, high investment cost and operation cost and low recovery rate.
SUMMERY OF THE UTILITY MODEL
To the defect that exists among the prior art, the utility model aims to provide an old and useless lithium cell low temperature evaporation retrieves electrode powder system for realize following mesh:
(1) recovering waste lithium battery electrode powder;
(2) the electrolyte is separated under the low-temperature condition, so that the energy consumption is reduced, and a large amount of waste gas is avoided;
(3) recovering copper and aluminum in the waste lithium battery;
(4) and mechanically stripping black powder and the adhesive.
(5) The recovery rate of the black powder is improved.
(6) The recovery rate of aluminum is improved.
(7) The generation of waste water is avoided.
In order to achieve the above purpose, the utility model adopts the technical proposal that:
the utility model provides a waste lithium battery low temperature evaporation retrieves electrode powder system, includes: the system comprises a disassembling system, a crushing system, a low-temperature evaporation system, a sorting system, a dust removal system, a gas recovery system and an inert gas protection system;
the disassembling system is connected with the crushing system, the crushing system is connected with the low-temperature evaporation system, the low-temperature evaporation system is connected with the sorting system, the gas recovery system is connected with the low-temperature evaporation system, the inert gas protection system is respectively connected with the crushing system, the low-temperature evaporation system and the gas recovery system, and the dust removal system is respectively connected with the crushing system and the sorting system;
the disassembling system is used for disassembling the waste lithium battery pack, separating plastic and a shell to obtain a module or a battery cell; the module or the battery cell enters a crushing system through a belt conveyor;
the crushing system comprises: the device comprises a coarse crusher, a fine crusher, a buffer tank and a quantitative feeder;
the coarse crusher is connected with the fine crusher through a screw conveyor, and is used for crushing the module and sending the crushed material into the fine crusher; the fine crusher is used for crushing materials sent by the battery cell and the coarse crusher, sending the crushed materials into the buffer box, the bottom of the buffer box is provided with the quantitative feeder, and the buffer box sends the crushed materials into the low-temperature evaporation system through the screw conveyer;
the low temperature vaporization system includes: the drying system comprises a dryer, a knife-shaped plate is arranged in the dryer, the included angle between the knife-shaped plate and the inner wall is 45-60 degrees, the effect is to increase the disturbance of materials in the dryer and facilitate the uniform heating of the materials in the dryer, so that the evaporation of electrolyte is improved and the separation of black powder is facilitated, the top of the dryer is connected with a gas recovery system through a pipeline, and the generated waste gas enters the gas recovery system;
the gas recovery system comprises a cooler, a washing tower and an active carbon adsorption device, the cooler is connected with the washing tower through a pipeline, the washing tower is connected with the active carbon adsorption device through a pipeline,
the cooler is used for condensing the condensable waste gas, forming electrolyte after the condensable waste gas is condensed, other noncondensable waste gas enters the washing tower, the washing tower is used for absorbing gases such as HF in the noncondensable waste gas, the activated carbon adsorption device is used for carrying out adsorption treatment on the noncondensable waste gas after being treated by the washing tower, so that VOC in the treated waste gas<50mg/m3，
The sorting system includes: the device comprises a primary screening device, a grinding device, a secondary screening device and a winnowing device; the primary screening device is connected with the grinding device, the grinding device is connected with the secondary screening device, the secondary screening device is connected with the winnowing device,
conveying the dried material to a primary screening device through a screw conveyor, wherein the primary screening device is used for separating heavy components and light components from the dried material, separating magnetic substances and non-magnetic substances from the heavy components through magnetic separation, and separating copper and aluminum from the non-magnetic substances through eddy current separation; the light component enters a grinding device, a wear-resistant steel plate is arranged on the inner wall of the grinding device, the wear-resistant steel plate is connected with the inner wall through a bolt, the grinding device is used for stripping black powder in the light component, a secondary screening device is used for separating the black powder and a copper-aluminum mixture from the light component, and a winnowing device is used for separating copper, aluminum and a small amount of black powder from the copper-aluminum mixture;
the dust removal system includes: fan, sack dust collector and chimney, fan and sack dust collector pass through the pipe connection, and sack dust collector passes through the pipe connection with the chimney, and sack dust collector is arranged in getting rid of the dust that produces in broken system and the sorting system, and sack dust collector has the grease proofing effect of refusing water, avoids moisture and oil to divide and blocks up the sack.
On the basis of the scheme, a rainproof cover is arranged above the belt conveyor, and the belt conveyor is provided with a stay wire protection device.
On the basis of the scheme, the particle size of the material crushed by the fine crusher in the crushing system is less than 20 mm.
On the basis of the scheme, the spiral conveyor is in a fully-sealed state.
On the basis of the scheme, the control temperature of the dryer is 80-150 ℃.
On the basis of the scheme, the inert gas protection system selects nitrogen as inert gas, the inert gas respectively enters the crushing system, the low-temperature evaporation system and the gas recovery system through pipelines, and the inert gas is used for preventing ignition and explosion of materials.
A method for recovering electrode powder from waste lithium batteries by low-temperature evaporation adopts the system for recovering electrode powder by low-temperature evaporation, and comprises the following steps:
step 1, firstly, disassembling a waste lithium battery pack by utilizing a disassembling system, and separating plastics and a shell to obtain a module or a battery cell;
step 2, enabling the module or the battery cell to enter a crushing system through a belt conveyor, enabling a coarse crusher in the crushing system to be used for crushing the module and sending crushed materials into a fine crusher through a screw conveyor, enabling the fine crusher to be used for crushing the materials sent by the battery cell and the coarse crusher, enabling the crushed materials to enter a buffer box, and sending the crushed materials into a low-temperature evaporation system through the screw conveyor by the buffer box;
step 3, drying the crushed materials by a drying system in the low-temperature evaporation system, and enabling waste gas generated after treatment to enter a gas recovery system through a pipeline;
step 4, the waste gas enters a cooler in the gas recovery system, the condensable waste gas is condensed in the cooler to recover electrolyte, other non-condensable waste gas enters a washing tower, gases such as HF and the like in the non-condensable waste gas are absorbed, and then the non-condensable waste gas is treated by an active carbon adsorption device, so that VOC in the treated waste gas<50mg/m3；
Step 5, conveying the dried material to a primary screening device in a sorting system through a screw conveyor, separating heavy components and light components from the dried material through the primary screening device, separating magnetic substances and non-magnetic substances from the heavy components through magnetic separation, separating copper and aluminum from the non-magnetic substances through eddy current separation, feeding the light components into a grinding device, stripping black powder in the light components under the action of shearing force in the grinding device, separating black powder and a copper-aluminum mixture through a secondary screening device, and separating copper, aluminum and a small amount of black powder from the copper-aluminum mixture through a wind separation device; and meanwhile, the dust removing system removes dust generated in the crushing system and the sorting system.
The utility model discloses beneficial effect that technical scheme brought:
(1) the occupied area is small.
(2) The recovery rate of the black powder is more than 98 percent.
(3) The residual amount of electrolyte in the black powder was < 4%.
(4) The recovery rates of copper and aluminum are > 98%.
(5) VOC in exhaust gas<50mg/m3。
(6) No dioxin is generated.
(7) No waste water is generated.
(8) The safety is high.
Drawings
The utility model discloses there is following figure:
figure 1 is a flow chart of the method of the present invention.
Fig. 2 is a block diagram of a system for recovering electrode powder by low-temperature evaporation of waste lithium batteries.
Detailed Description
The present invention will be described in further detail with reference to the accompanying fig. 1-2.
The utility model provides a waste lithium battery low temperature evaporation retrieves electrode powder system, includes: the system comprises a disassembling system, a crushing system, a low-temperature evaporation system, a sorting system, a dust removal system, a gas recovery system and an inert gas protection system.
The disassembling system is connected with the crushing system, the crushing system is connected with the low-temperature evaporation system, the low-temperature evaporation system is connected with the sorting system, the gas recovery system is connected with the low-temperature evaporation system, the inert gas protection system is respectively connected with the crushing system, the low-temperature evaporation system and the gas recovery system, and the dust removal system is respectively connected with the crushing system and the sorting system;
the disassembling system is used for disassembling the waste lithium battery pack, separating plastic and a shell, and obtaining a module or a battery core. And the module or the battery cell enters a crushing system through a belt conveyor.
The crushing system comprises: the device comprises a coarse crusher, a fine crusher, a buffer tank and a quantitative feeder;
the coarse crusher is connected with the fine crusher, and is used for crushing the module and sending the crushed material into the fine crusher; the fine crusher is used for crushing the battery cell and sending the crushed material into the buffer box, a constant feeder is arranged at the bottom of the buffer box, and the buffer box sends the crushed material into the low-temperature evaporation system through the screw conveyor;
the low temperature vaporization system includes: drying system and heating system, heating system includes the conduction oil heater for drying system provides the heat source, adopt the benefit of conduction oil heating, first conduction oil can recycle, and the second is convenient for control temperature, and the third does not pollute the production. The dryer is controlled to a temperature of 80 c to 150 c with the objective of evaporating the low boiling solvent from the crushed material and removing lithium hexafluorophosphate to enable efficient mechanical sorting under safe conditions (no inertness).
The drying system comprises a dryer, a knife-shaped plate is arranged in the dryer, the included angle between the knife-shaped plate and the inner wall is 45-60 degrees, the effect is to increase the disturbance of materials in the dryer, the evaporation of electrolyte is improved, the separation of black powder is facilitated, the materials are uniformly heated in the dryer, the top of the dryer is connected with a gas recovery system through a pipeline, and the generated waste gas enters the gas recovery system;
the sorting system comprises: the device comprises a primary screening device, a grinding device, a secondary screening device and a winnowing device; the primary screening device is connected with the grinding device, the grinding device is connected with the secondary screening device, the secondary screening device is connected with the winnowing device,
the material after drying carries primary screening plant through screw conveyer, primary screening plant is used for separating out heavy component and light component with the material after drying, the heavy component separates out magnetic substance and non-magnetic substance through the magnetic separation, copper and aluminium are separated out to non-magnetic substance through eddy current separation, the light component gets into grinder, grinder's inner wall is equipped with wear-resisting steel sheet, wear-resisting steel sheet passes through bolted connection with the inner wall, the change is conveniently dismantled, grinder is arranged in peeling off the black powder in the light component, secondary screening plant is arranged in separating out black powder and the copper aluminium mixture in the light component, wind selector is arranged in separating out copper, aluminium and a small amount of black powder in the copper aluminium mixture.
The gas recovery system comprises a cooler, a washing tower and an active carbon adsorption device, wherein the cooler is connected with the washing tower through a pipeline, and the washing tower is connected with the active carbon adsorption device through a pipeline. The cooler is used for condensing the condensable waste gas, the condensable waste gas is condensed to form electrolyte, other noncondensable waste gas enters the washing tower, the washing tower is used for absorbing gases such as HF (hydrogen fluoride) in the noncondensable waste gas, the activated carbon adsorption device is used for adsorbing the noncondensable waste gas treated by the washing tower, and the treatment is carried outVOC in the exhaust gas<50mg/m3。
Inert gas protection system: nitrogen is selected as inert gas, and the inert gas respectively enters a crushing system, a low-temperature evaporation system and a gas recovery system through pipelines. The inert gas serves to prevent ignition and explosion of the material.
The dust removal system includes: fan, sack dust collector and chimney, fan and sack dust collector pass through the pipe connection, and sack dust collector passes through the pipe connection with the chimney, and sack dust collector is arranged in getting rid of the dust that produces in broken system and the sorting system, and sack dust collector has the grease proofing effect of refusing water, avoids moisture and oil to divide and blocks up the sack.
On the basis of the scheme, a rainproof cover is arranged above the belt conveyor, and the belt conveyor is provided with a stay wire protection device.
On the basis of the scheme, the particle size of the material crushed by the fine crusher in the crushing system is less than 20 mm.
On the basis of the scheme, the spiral conveyor is in a fully-sealed state.
A method for recovering electrode powder from waste lithium batteries by low-temperature evaporation adopts the system for recovering electrode powder by low-temperature evaporation, and comprises the following steps:
step 1, firstly, disassembling a waste lithium battery pack by utilizing a disassembling system, and separating plastics and a shell to obtain a module or a battery cell;
step 2, enabling the module or the battery cell to enter a crushing system through a belt conveyor, enabling a coarse crusher in the crushing system to be used for crushing the module and sending crushed materials into a fine crusher through a screw conveyor, enabling the fine crusher to be used for crushing the materials sent by the battery cell and the coarse crusher, enabling the crushed materials to enter a buffer box, and sending the crushed materials into a low-temperature evaporation system through the screw conveyor by the buffer box;
step 3, drying the crushed materials by a drying system in the low-temperature evaporation system, and enabling waste gas generated after treatment to enter a gas recovery system through a pipeline;
step 4, enabling the waste gas to enter a cooler in a gas recovery systemCondensable waste gas is condensed in the cooler to form electrolyte, other uncondensed waste gas enters the washing tower, HF and other gases in the uncondensed waste gas are absorbed and then treated by the activated carbon adsorption device, so that VOC in the treated waste gas<50mg/m3；
Step 5, conveying the dried material to a primary screening device in a sorting system through a screw conveyor, separating heavy components and light components from the dried material through the primary screening device, separating magnetic substances and non-magnetic substances from the heavy components through magnetic separation, separating copper and aluminum from the non-magnetic substances through eddy current separation, feeding the light components into a grinding device, stripping black powder in the light components under the action of shearing force in the grinding device, separating black powder and a copper-aluminum mixture through a secondary screening device, and separating copper, aluminum and a small amount of black powder from the copper-aluminum mixture through a wind separation device; and meanwhile, the dust removing system removes dust generated in the crushing system and the sorting system.
The utility model discloses a technical key point with want the guard point:
(1) a process flow system;
(2) the evaporation temperature is 80-150 ℃;
(3) the grain size of the fine crushed material is less than 20 mm;
(4) treated VOC<50mg/m3；
(5) The shape and the installation angle of the inner part of the dryer are 45-60 degrees.
(6) The abrasion-resistant steel plate in the grinder and the connection mode of the abrasion-resistant steel plate and the inner wall.
(7) The recovery rate of the black powder is more than 98 percent.
(8) The residual amount of electrolyte in the black powder was < 4%.
(9) The recovery rates of copper and aluminum are > 98%.
Those not described in detail in this specification are within the skill of the art.
Claims (6)
1. The utility model provides a waste lithium cell low temperature evaporation retrieves electrode powder system which characterized in that includes: the system comprises a disassembling system, a crushing system, a low-temperature evaporation system, a sorting system, a dust removal system, a gas recovery system and an inert gas protection system;
the disassembling system is connected with the crushing system, the crushing system is connected with the low-temperature evaporation system, the low-temperature evaporation system is connected with the sorting system, the gas recovery system is connected with the low-temperature evaporation system, the inert gas protection system is respectively connected with the crushing system, the low-temperature evaporation system and the gas recovery system, and the dust removal system is respectively connected with the crushing system and the sorting system;
the disassembling system is used for disassembling the waste lithium battery pack, separating plastic and a shell to obtain a module or a battery cell; the module or the battery cell enters a crushing system through a belt conveyor;
the crushing system comprises: the device comprises a coarse crusher, a fine crusher, a buffer tank and a quantitative feeder;
the coarse crusher is connected with the fine crusher through a screw conveyor, and is used for crushing the module and sending the crushed material into the fine crusher; the fine crusher is used for crushing materials sent by the battery cell and the coarse crusher, sending the crushed materials into the buffer box, the bottom of the buffer box is provided with the quantitative feeder, and the buffer box sends the crushed materials into the low-temperature evaporation system through the screw conveyer;
the low temperature vaporization system includes: the drying system comprises a dryer, a knife-shaped plate is arranged in the dryer, the included angle between the knife-shaped plate and the inner wall is 45-60 degrees, the top of the dryer is connected with a gas recovery system through a pipeline, and generated waste gas enters the gas recovery system;
the gas recovery system comprises a cooler, a washing tower and an active carbon adsorption device, the cooler is connected with the washing tower through a pipeline, the washing tower is connected with the active carbon adsorption device through a pipeline,
the cooler is used for condensing condensable waste gas to form electrolyte, other non-condensable waste gas enters the washing tower, the washing tower is used for absorbing HF gas in the non-condensable waste gas, the activated carbon adsorption device is used for adsorbing the non-condensable waste gas treated by the washing tower,VOC in the treated waste gas<50mg/m3，
The sorting system includes: the device comprises a primary screening device, a grinding device, a secondary screening device and a winnowing device; the primary screening device is connected with the grinding device, the grinding device is connected with the secondary screening device, the secondary screening device is connected with the winnowing device,
conveying the dried material to a primary screening device through a screw conveyor, wherein the primary screening device is used for separating heavy components and light components from the dried material, separating magnetic substances and non-magnetic substances from the heavy components through magnetic separation, and separating copper and aluminum from the non-magnetic substances through eddy current separation; the light component enters a grinding device, a wear-resistant steel plate is arranged on the inner wall of the grinding device, the wear-resistant steel plate is connected with the inner wall through a bolt, the grinding device is used for stripping black powder in the light component, a secondary screening device is used for separating the black powder and a copper-aluminum mixture in the light component, and the air separation device is used for separating copper, aluminum and a small amount of black powder in the copper-aluminum mixture;
the dust removal system includes: fan, sack dust collector and chimney, fan and sack dust collector pass through the pipe connection, and sack dust collector passes through the pipe connection with the chimney, and sack dust collector is arranged in getting rid of the dust that produces in broken system and the sorting system, and sack dust collector has the grease proofing effect of refusing water, avoids moisture and oil to divide and blocks up the sack.
2. The system for recovering the electrode powder from the waste lithium batteries through low-temperature evaporation as recited in claim 1, wherein a rain cover is arranged above the belt conveyor, and the belt conveyor is provided with a stay wire protection device.
3. The system for recovering the electrode powder from the waste lithium batteries through low-temperature evaporation as recited in claim 1, wherein the particle size of the materials crushed by the fine crusher in the crushing system is less than 20 mm.
4. The system for recovering the electrode powder from the waste lithium batteries through low-temperature evaporation as recited in claim 1, wherein the screw conveyor is in a fully sealed state.
5. The system for recovering the electrode powder by low-temperature evaporation of the waste lithium battery as claimed in claim 1, wherein the temperature of the dryer is controlled to be 80 ℃ to 150 ℃.
6. The system for recovering the electrode powder from the waste lithium batteries through low-temperature evaporation as recited in claim 1, wherein the inert gas protection system selects nitrogen as inert gas, the inert gas respectively enters the crushing system, the low-temperature evaporation system and the gas recovery system through pipelines, and the inert gas is used for preventing ignition and explosion of materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120309859.6U CN215089693U (en) | 2021-02-03 | 2021-02-03 | Electrode powder recovery system by low-temperature evaporation of waste lithium batteries |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120309859.6U CN215089693U (en) | 2021-02-03 | 2021-02-03 | Electrode powder recovery system by low-temperature evaporation of waste lithium batteries |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215089693U true CN215089693U (en) | 2021-12-10 |
Family
ID=79334059
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120309859.6U Withdrawn - After Issue CN215089693U (en) | 2021-02-03 | 2021-02-03 | Electrode powder recovery system by low-temperature evaporation of waste lithium batteries |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215089693U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112871991A (en) * | 2021-02-03 | 2021-06-01 | 顺尔茨环保(北京)有限公司 | System and method for recycling electrode powder from waste lithium battery through low-temperature evaporation |
-
2021
- 2021-02-03 CN CN202120309859.6U patent/CN215089693U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112871991A (en) * | 2021-02-03 | 2021-06-01 | 顺尔茨环保(北京)有限公司 | System and method for recycling electrode powder from waste lithium battery through low-temperature evaporation |
| CN112871991B (en) * | 2021-02-03 | 2024-01-12 | 顺尔茨环保(北京)有限公司 | System and method for recycling electrode powder by low-temperature evaporation of waste lithium batteries |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112871991B (en) | System and method for recycling electrode powder by low-temperature evaporation of waste lithium batteries | |
| CN113161640B (en) | System and method for recycling black powder through multistage pyrolysis of waste lithium batteries | |
| CN111495925B (en) | Method for pyrolyzing and defluorinating chlorine of waste lithium battery | |
| CN110534834A (en) | The recovery method of electrolyte in a kind of waste and old lithium ion battery | |
| CN113976595B (en) | Soft package lithium ion battery recovery processing system and process | |
| WO2023070801A1 (en) | Recovery method for valuable components of waste lithium-ion batteries | |
| AU2021103810A4 (en) | Device and method for integrated recycling and regeneration of full components of graphite anode of waste lithium battery | |
| CN110635191A (en) | Method for cleanly recovering all components of waste power lithium battery | |
| CN114147043B (en) | Sorting method for recycling anode and cathode powder of waste lithium batteries | |
| CN114094222A (en) | Efficient automatic disassembling and recycling system and method for lithium iron phosphate lithium battery | |
| CN111271711A (en) | Continuous carbonization pyrolysis treatment method for waste lithium batteries | |
| CN214672743U (en) | System for black powder is retrieved in multistage pyrolysis of old and useless lithium cell | |
| CN111842410A (en) | Waste power battery monomer full-component recovery system | |
| CN113745685A (en) | Waste battery recycling system and process thereof | |
| CN215089693U (en) | Electrode powder recovery system by low-temperature evaporation of waste lithium batteries | |
| CN114094221A (en) | Efficient automatic disassembling and recycling system and method for ternary lithium battery | |
| CN113458114A (en) | Multistage sorting system and method for waste lithium batteries | |
| CN114695995A (en) | Efficient dissociation method for positive electrode material and current collector of waste lithium battery | |
| CN215933683U (en) | Multichannel waste lithium battery electrified disassembling and recycling equipment | |
| CN207938750U (en) | a kind of old and useless battery treatment system | |
| CN114024052A (en) | Waste lithium battery harmless recovery treatment method based on heat treatment | |
| CN108565520A (en) | A kind of recovery method of waste and old dynamic lithium battery | |
| CN117299761A (en) | Lithium battery crushing, cracking and recycling system and process | |
| CN109504411B (en) | Method for preparing biochar and system for implementing same | |
| CN217544719U (en) | Waste lithium ion battery treatment system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20211210 Effective date of abandoning: 20240112 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20211210 Effective date of abandoning: 20240112 |