CN207250675U - A kind of based lithium-ion battery positive plate regenerative system - Google Patents

A kind of based lithium-ion battery positive plate regenerative system Download PDF

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Publication number
CN207250675U
CN207250675U CN201721192863.9U CN201721192863U CN207250675U CN 207250675 U CN207250675 U CN 207250675U CN 201721192863 U CN201721192863 U CN 201721192863U CN 207250675 U CN207250675 U CN 207250675U
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China
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lithium
ion battery
separating tank
positive plate
tank
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CN201721192863.9U
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Chinese (zh)
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刘伟伟
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Environmental Protection Science And Technology (suzhou) Co Ltd
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Environmental Protection Science And Technology (suzhou) Co Ltd
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/84—Recycling of batteries or fuel cells

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  • Battery Electrode And Active Subsutance (AREA)
  • Manufacture And Refinement Of Metals (AREA)

Abstract

The utility model discloses a kind of based lithium-ion battery positive plate regenerative system, which is made of sequentially connected blade crusher, aluminium separating tank, reduction roasting section, lithium separating tank, sour fluid bowl, electrolysis temporary tank and electrolytic cell.Three kinds of nickel in based lithium-ion battery positive plate, cobalt, manganese elements by techniques such as broken, aluminium separation, reduction roasting, lithium separation, acid dissolving and electrolysis, are realized that a step separates, wherein cobalt is with Co by this regenerative system successively3O4Precipitation form is separated by filtration, and nickel is removed in the form of metallic nickel from minus plate, and evaporative crystallization recycles manganese from remaining electrolyte in the form of manganese sulfate.Regenerative system and its method the automation depth of the utility model are high, are adapted to large-scale production；System totally-enclosed, it is low to environment and human body harm；The complete regeneration of battery material is realized, recycles high efficiency；Treatment process realizes that nickel cobalt manganese Metal separates without using extractant, only consumes electric energy, environmental friendly.

Description

A kind of based lithium-ion battery positive plate regenerative system
Technical field
The utility model belongs to resource regeneration and nonferrous metals recycling field, and in particular to a kind of lithium ion battery is just Pole piece regenerative system.
Background technology
Lithium ion battery has greatly promoted green novel energy source industry with its excellent energy density, the security of stabilization Progressive, its application is progressively extended to automotive field by numerous manufacturers by 3C electronic fields.Under the promotion of country, now It can be seen that many electric bus on road surface.Counted according to relevant expert, to before and after the year two thousand twenty, China's pure electric vehicle (contains plug-in Formula) passenger car and hybrid power passenger car power battery add up learies and be up to ten thousand tons of 12-17.Lithium ion battery is mostly by electricity Several parts such as pond cap, battery case, cathode, anode, electrolyte and battery diaphragm are formed.Wherein the cathode of lithium battery, which is formed, is mostly 88% or so LiCoO2（Also there is LiNiO2、LiVO2And LiMn2O4Deng）, 8% or so acetylene black conductor and 4% or so PVDF binding agents, and its negative material is mostly graphitized carbon and conductive agent, is attached between the two by adhesive on copper foil.So The metal waste of flood tide, if it will be caused very big influence by flowing into environment.Moved back in face of upcoming power battery Tide is used as a servant, government and many producers progressively start to be laid out battery recycling regeneration.
The recycling project of power battery is domestic to have had a lot of enterprises attempting now, and general process is by old and useless battery Fail, disassemble, detect, screen, then echelon utilizes again for secondary restructuring.For can not the echelon waste and old lithium ion battery that utilizes Removal process is：Discharge, disassemble and isolate each part such as cathode, anode, electrolyte and membrane, then electrode material is carried out Extracted after alkali leaching, Ore Leaching, removal of impurities to realize the enrichment of valuable metal.Its complex process, efficiency is low, a large amount of soda acids with And the use of extractant causes substantial amounts of secondary pollution.With current treatment technology, just these liquid waste processing expenses are just enough The income that the recycling of most battery metal produces is balanced out, China also needs to more input and research and development in these areas.
Utility model content
For above-mentioned problem, the utility model has aimed to provide a kind of based lithium-ion battery positive plate regenerative system, The system and method can realize that lithium nickel cobalt manganese metallic element separates and recovers, and be without the use of extractant, be produced reducing While cost, environmental protection of enterprise processing load is reduced.
To realize above-mentioned technical purpose and the technique effect, the utility model is achieved through the following technical solutions：
A kind of based lithium-ion battery positive plate regenerative system, by blade crusher, aluminium separating tank, reduction roasting section, lithium point Formed from groove, sour fluid bowl, electrolytic cell and electrolysis temporary tank；
The blade crusher is connected with the aluminium separating tank, is matched somebody with somebody in the aluminium separating tank and is useful for immersion supersound process The solvent orange 2 A of based lithium-ion battery positive plate material；The aluminium separating tank is connected with the reduction roasting section；The reduction roasting section with The lithium separating tank connects, the CO for being marked with hot water in the lithium separating tank and being constantly passed through2；The lithium separating tank and the acid Fluid bowl connects, with the sulfuric acid solution for being useful for ultrasonic dissolution positive electrode in the acid fluid bowl；The acid fluid bowl and the electrolysis Temporary tank connects, and the inside of the electrolysis temporary tank is divided into anode slot and cathode can；The inside of the electrolytic cell by Yin/Yang from Proton exchange is separated into anode cavities and cathode cavity, and the anode slot of the electrolysis temporary tank is connected with the anode cavities of the electrolytic cell, The anode cavities of the electrolytic cell are connected with the cathode can of the electrolysis temporary tank, the cathode can of the electrolysis temporary tank and the electricity Solve the cathode cavity connection of groove.
Further, the reaction temperature in the reduction roasting section is 500 ~ 700 DEG C.
Further, the water temperature for the hot water being marked with the lithium separating tank is 80 DEG C.
Further, the sulfuric acid solution being furnished with the sour fluid bowl is the sulfuric acid solution of 1 ~ 5% concentration.
The technological process of the utility model based lithium-ion battery positive plate regenerative system, comprises the following steps：
Step 1）Based lithium-ion battery positive plate is sent into blade crusher, broken place is carried out to based lithium-ion battery positive plate Reason, then will it is broken after positive electrode be sent to aluminium separating tank；
Step 2）The aluminium separating tank carries out soaking ultrasonic place using the solvent orange 2 A being furnished with groove to the positive electrode after crushing Reason is separated with collector, and leaves aluminium foil fragment and active material by classified filtering, then the positive electrode after separation is transmitted To reduction roasting section；
Step 3）Feeding is described also after positive electrode after aluminium is separated first uniformly is mixed with mass ratio for 10 ~ 20% carbon sources Former furnace zone processing, treatment temperature is 500 ~ 700 DEG C, and processing time is 2 ~ 5h；In the reduction roasting section, lithium ion battery The lithium of positive plate is converted into lithium carbonate, while cobalt is changed into sub-compound by trivalent；
Step 4）Positive electrode after reduction roasting enters lithium separating tank, and CO is constantly passed through in the lithium separating tank2, at the same time Positive electrode is cleaned using 80 DEG C of hot water, the chemical reaction of generation is：Li2CO3+H2O+CO2=2LiHCO3, carried out after reaction Filter, filtrate evaporative crystallization obtain Li2CO3, the sour fluid bowl of filter residue entrance；
Step 5）The acid fluid bowl surpasses the positive electrode in filter residue using 1 ~ 5% sulfuric acid solution being furnished with its groove Sound dissolves, and filters to obtain carbon slag, is adjusted with NaOH and considers liquid to pH3 ~ 4；
Step 6）Adjust pH after filtrate first pass around electrolysis temporary tank anode slot enter electrolytic cell anode cavities and with The anode cavities of electrolytic cell constantly circulate, and using the difference of Ni and Co electrode potentials, it is heavy to be aoxidized in the anode cavities of the electrolytic cell Shallow lake cobalt ions, forms Co3O4 Precipitation；It is as follows that chemical reaction occurs in the anode cavities electrode surface of the electrolytic cell：
H2O - 4e- = O2 + 4H+；3Co2+ + 4H2O - 2e- = Co3O4 + 8H+；
Step 7）After being filtered to remove Co, filtrate is pumped into the cathode of the electrolytic cell by the cathode can of the electrolysis temporary tank Chamber, reduces precipitating metal nickel in the cathode cavity of the electrolytic cell, and chemistry occurs in the cathode cavity electrode surface of the electrolytic cell Reaction is as follows：
Ni2+ + 2e-= Ni；
Thus, three kinds of nickel, cobalt, manganese elements are able to step separation, and wherein cobalt is with Co3O4Precipitation form is separated by filtration, and nickel is with gold The form for belonging to nickel is removed from minus plate, and evaporative crystallization recycles manganese from remaining electrolyte in the form of manganese sulfate.
The beneficial effects of the utility model are：
1st, the based lithium-ion battery positive plate regenerative system automation depth of the utility model is high, is adapted to large-scale production.
2nd, the based lithium-ion battery positive plate regenerative system system totally-enclosed of the utility model, endangers environment and human body It is low.
3rd, the based lithium-ion battery positive plate regenerative system of the utility model realizes the complete regeneration of battery material, recycling effect It is beneficial high.
4th, the treatment process of the based lithium-ion battery positive plate regenerative system of the utility model realizes nickel cobalt without using extractant Manganese Metal separates, and only consumes electric energy, environmental friendly.
Described above is only the general introduction of technical solutions of the utility model, in order to better understand the skill of the utility model Art means, and being practiced according to the content of specification, with the preferred embodiment of the utility model and coordinate attached drawing detailed below Describe in detail bright as after.Specific embodiment of the present utility model is shown in detail by following embodiments and its attached drawing.
Brief description of the drawings
Attached drawing described herein is used to provide a further understanding of the present invention, and forms the part of the application, The schematic description and description of the utility model is used to explain the utility model, does not form to the improper of the utility model Limit.In the accompanying drawings：
Fig. 1 is the structure chart of the utility model based lithium-ion battery positive plate regenerative system.
Drawing reference numeral in figure：1st, blade crusher；2nd, aluminium separating tank；3rd, reduction roasting section；4th, lithium separating tank；5th, acid is molten Groove；6th, electrolytic cell；7th, it is electrolysed temporary tank.
Embodiment
Below with reference to the accompanying drawings and in conjunction with the embodiments, the utility model is described in detail.
Shown in Figure 1, a kind of based lithium-ion battery positive plate regenerative system, by blade crusher 1, aluminium separating tank 2, goes back Former furnace zone 3, lithium separating tank 4, sour fluid bowl 5, electrolytic cell 6 and electrolysis temporary tank 7 are formed；
The blade crusher 1 is connected with the aluminium separating tank 2, ultrasonic with immersion is useful in the aluminium separating tank 2 Handle the solvent orange 2 A of based lithium-ion battery positive plate material；The aluminium separating tank 2 is connected with the reduction roasting section 3；The reduction roasting Burn section 3 to be connected with the lithium separating tank 4, the CO for being marked with hot water in the lithium separating tank 4 and being constantly passed through2；The lithium separation Groove 4 is connected with the sour fluid bowl 5, with the sulfuric acid solution for being useful for ultrasonic dissolution positive electrode in the acid fluid bowl 5；The acid is molten Groove 5 is connected with the electrolysis temporary tank 7, and the inside of the electrolysis temporary tank 7 is divided into anode slot and cathode can；The electrolytic cell 6 inside is separated into anode cavities and cathode cavity, the anode slot and the electricity of the electrolysis temporary tank 7 by anion/cation exchange membrane The anode cavities connection of groove 6 is solved, the anode cavities of the electrolytic cell 6 are connected with the cathode can of the electrolysis temporary tank 7, and the electrolysis is temporary The cathode can for depositing groove 7 is connected with the cathode cavity of the electrolytic cell 6.
Further, the reaction temperature in the reduction roasting section 3 is 500 ~ 700 DEG C.
Further, the water temperature for the hot water being marked with the lithium separating tank 4 is 80 DEG C.
Further, the sulfuric acid solution being furnished with the sour fluid bowl 5 is the sulfuric acid solution of 1 ~ 5% concentration.
The technological process of the utility model based lithium-ion battery positive plate regenerative system, comprises the following steps：
Step 1）Based lithium-ion battery positive plate is sent into blade crusher 1, based lithium-ion battery positive plate is crushed Processing, then will it is broken after positive electrode be sent to aluminium separating tank 2；
Step 2）The aluminium separating tank 2 carries out immersion ultrasound using the solvent orange 2 A being furnished with groove to the positive electrode after crushing Processing is separated with collector, and leaves aluminium foil fragment and active material by classified filtering, then the positive electrode after separation is passed Send to reduction roasting section 3；
Step 3）Feeding is described also after positive electrode after aluminium is separated first uniformly is mixed with mass ratio for 10 ~ 20% carbon sources Former furnace zone 3 is handled, and treatment temperature is 500 ~ 700 DEG C, and processing time is 2 ~ 5h；In the reduction roasting section 3, lithium-ion electric The lithium of pond positive plate is converted into lithium carbonate, while cobalt is changed into sub-compound by trivalent；
Step 4）Positive electrode after reduction roasting enters lithium separating tank 4, and CO is constantly passed through in the lithium separating tank 42, together The hot water cleaning positive electrode that 80 DEG C of Shi Liyong, the chemical reaction of generation are：Li2CO3+H2O+CO2=2LiHCO3, carried out after reaction Filtering, filtrate evaporative crystallization obtain Li2CO3, the sour fluid bowl 5 of filter residue entrance；
Step 5）The acid fluid bowl 5 carries out the positive electrode in filter residue using 1 ~ 5% sulfuric acid solution being furnished with its groove Ultrasonic dissolution, filters to obtain carbon slag, is adjusted with NaOH and considers liquid to pH3 ~ 4；
Step 6）Adjust the filtrate after pH and first pass around the anode slot of electrolysis temporary tank 7 into the anode cavities of electrolytic cell 6, and Constantly circulated with the anode cavities of electrolytic cell 6, using the difference of Ni and Co electrode potentials, the oxygen in the anode cavities of the electrolytic cell 6 Change precipitation cobalt ions, form Co3O4 Precipitation；It is as follows that chemical reaction occurs in the anode cavities electrode surface of the electrolytic cell 6：
H2O - 4e- = O2 + 4H+；3Co2+ + 4H2O - 2e- = Co3O4 + 8H+；
Step 7）After being filtered to remove Co, filtrate is pumped into the moon of the electrolytic cell 6 by the cathode can of the electrolysis temporary tank 7 Pole chamber, reduces precipitating metal nickel in the cathode cavity of the electrolytic cell 6；Occur in the cathode cavity electrode surface of the electrolytic cell 6 Chemical reaction is as follows：
Ni2+ + 2e-= Ni；
Thus, three kinds of nickel, cobalt, manganese elements are able to step separation, and wherein cobalt is with Co3O4Precipitation form is separated by filtration, and nickel is with gold The form for belonging to nickel is removed from minus plate, and evaporative crystallization recycles manganese from remaining electrolyte in the form of manganese sulfate.
The above descriptions are merely preferred embodiments of the present invention, is not intended to limit the present invention, for this For the technical staff in field, various modifications and changes may be made to the present invention.It is all in the spirit and principles of the utility model Within, any modification, equivalent replacement, improvement and so on, should be included within the scope of protection of this utility model.

Claims (4)

  1. A kind of 1. based lithium-ion battery positive plate regenerative system, it is characterised in that：By blade crusher（1）, aluminium separating tank（2）、 Reduction roasting section（3）, lithium separating tank（4）, sour fluid bowl（5）, electrolytic cell（6）With electrolysis temporary tank（7）Form；
    The blade crusher（1）With the aluminium separating tank（2）Connection, the aluminium separating tank（2）It is interior super with immersion is useful for The solvent orange 2 A of sonication based lithium-ion battery positive plate material；The aluminium separating tank（2）With the reduction roasting section（3）Connection；It is described Reduction roasting section（3）With the lithium separating tank（4）Connection, the lithium separating tank（4）Inside it is marked with hot water and is constantly passed through CO2；The lithium separating tank（4）With the sour fluid bowl（5）Connection, the acid fluid bowl（5）It is interior with being useful for ultrasonic dissolution cathode material The sulfuric acid solution of material；The acid fluid bowl（5）With the electrolysis temporary tank（7）Connection, the electrolysis temporary tank（7）Inside points every For anode slot and cathode can；The electrolytic cell（6）Inside anode cavities and cathode cavity are separated into by anion/cation exchange membrane, institute State electrolysis temporary tank（7）Anode slot and the electrolytic cell（6）Anode cavities connection, the electrolytic cell（6）Anode cavities and institute State electrolysis temporary tank（7）Cathode can connection, the electrolysis temporary tank（7）Cathode can and the electrolytic cell（6）Cathode cavity Connection.
  2. 2. based lithium-ion battery positive plate regenerative system according to claim 1, it is characterised in that：The reduction roasting section （3）Interior reaction temperature is 500 ~ 700 DEG C.
  3. 3. based lithium-ion battery positive plate regenerative system according to claim 1, it is characterised in that：The lithium separating tank（4） The water temperature for the hot water being inside marked with is 80 DEG C.
  4. 4. based lithium-ion battery positive plate regenerative system according to claim 1, it is characterised in that：The acid fluid bowl（5）It is interior The sulfuric acid solution being furnished with is the sulfuric acid solution of 1 ~ 5% concentration.
CN201721192863.9U 2017-09-18 2017-09-18 A kind of based lithium-ion battery positive plate regenerative system Expired - Fee Related CN207250675U (en)

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CN201721192863.9U CN207250675U (en) 2017-09-18 2017-09-18 A kind of based lithium-ion battery positive plate regenerative system

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Application Number Priority Date Filing Date Title
CN201721192863.9U CN207250675U (en) 2017-09-18 2017-09-18 A kind of based lithium-ion battery positive plate regenerative system

Publications (1)

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CN207250675U true CN207250675U (en) 2018-04-17

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Country Status (1)

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Granted publication date: 20180417

Termination date: 20180918