CN109550568A - A kind of used Li ion cell cracking and sorting technique - Google Patents
A kind of used Li ion cell cracking and sorting technique Download PDFInfo
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- CN109550568A CN109550568A CN201811288947.1A CN201811288947A CN109550568A CN 109550568 A CN109550568 A CN 109550568A CN 201811288947 A CN201811288947 A CN 201811288947A CN 109550568 A CN109550568 A CN 109550568A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C21/00—Disintegrating plant with or without drying of the material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
- B02C23/08—Separating or sorting of material, associated with crushing or disintegrating
- B02C23/14—Separating or sorting of material, associated with crushing or disintegrating with more than one separator
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
- B02C23/08—Separating or sorting of material, associated with crushing or disintegrating
- B02C23/16—Separating or sorting of material, associated with crushing or disintegrating with separator defining termination of crushing or disintegrating zone, e.g. screen denying egress of oversize material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C1/00—Magnetic separation
- B03C1/02—Magnetic separation acting directly on the substance being separated
- B03C1/30—Combinations with other devices, not otherwise provided for
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/54—Reclaiming serviceable parts of waste accumulators
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
- B02C23/08—Separating or sorting of material, associated with crushing or disintegrating
- B02C23/16—Separating or sorting of material, associated with crushing or disintegrating with separator defining termination of crushing or disintegrating zone, e.g. screen denying egress of oversize material
- B02C2023/165—Screen denying egress of oversize material
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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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- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Processing Of Solid Wastes (AREA)
- Secondary Cells (AREA)
Abstract
The invention discloses a kind of used Li ion cell cracking and sorting techniques, comprising: (1) the battery progress first order is broken into 5-10cm；(2) it is sent into retort, 400-550 DEG C of carbonization temperature, carbonization time 40-60min；(3) material is cooling after carbonizing, and carries out the second level and is broken into 10-15mm；(4) magnetic separation sub-elects carrying magnetic ingredient；(5) two-stage screening will be carried out without magnetic material, positive and negative anodes dressing sieve is branched away into obtain copper aluminium collector, first order roller sieve mesh number 70-90 mesh, second level roller sieve mesh number 90-110 mesh；(6) copper aluminium collector friction is broken up, is broken into 2-5mm；(7) it is sieved again, positive and negative anodes dressing sieve is branched away；(8) collector sorts in copper aluminium sorting machine.The technique can recycle the valuable components efficient separations such as positive and negative anodes powder, steel shell and copper aluminium in battery, and good separation effect, cost is relatively low.
Description
Technical field
The present invention relates to applying waste lithium ionic power battery be recycled technical field, in particular to a kind of useless lithium from
Sub- battery crushing sorting process.
Background technique
Lithium ion battery has very extensive application range, with the use of tablet computer, smart phone and ultrabook
Amount increases, it is contemplated that the trend increased considerably can be presented in the application of the year two thousand twenty or so, conventional small lithium ion battery.It is same with this
When, the recycling problem of large quantities of waste and old lithium ion batteries more highlights, waste and old using conventional process such as landfill, burnings
Lithium ion battery not only wastes resource, but also causes pollution to environment, or even can also bring harm to human health.
In industry apparently, the recycling market space of lithium ion battery is big by expert.Value dimension is in rare metals such as cobalt, nickel
Content is very high.Amount containing cobalt only has 0.02% in China's cobalt ore, and the allowable exploitation verified at present also only has 40,000 tons, recycles cobalt
It is an important approach.
According to measuring and calculating, the market scale that the metals such as Call Provision, nickel, manganese, lithium and iron and aluminium are created from waste lithium cell
It will start to break out in 2018, reach 5,200,000,000 yuan, the year two thousand twenty reaches 13,600,000,000 yuan, and 2023 will be more than 30,000,000,000 yuan, discarded
Lithium ion battery has significant resource.If these battery learies generated because new-energy automobile industry is developed are not
Obtain appropriate disposition, it will biggish pollution is caused to environment.
The existing waste and old lithium ion battery returned enterprise in China is concentrated mainly on Zhujiang River trigonum and the Changjiang river trigonum, although
Quantity is many and larger, but recovery process is all relatively backward, and classification dismantling mainly takes manual work, still belongs to work
Intensive industry, working efficiency is low, and error rate is big.Therefore, waste and old lithium ion battery efficiency crushing sorts, low cost recovery processing
Opportunity coexists with challenge for the bottleneck problem developed as China's battery industry.
Summary of the invention
The main purpose of the present invention is to provide a kind of used Li ion cell cracking and sorting techniques, existing waste and old to solve
The problem that the lithium ion battery recovery process efficiency of separation is low, separating effect is poor, at high cost.
To achieve the goals above, the present invention provides a kind of used Li ion cell cracking and sorting technique, the cracking and sortings
Technique the following steps are included:
(1) waste and old lithium ion battery after electric discharge is sent into the progress first order in the first crusher to be crushed, by battery cell
It is broken into the material having a size of 5-10cm；
(2) will be sent into low-temperature carbonization furnace and carbonize by the broken material of the first order, by material electrolyte,
Binder and plastic diaphragms carry out the material after pyrolysis processing carbonize, wherein carbonization temperature is controlled at 400-550 DEG C, charcoal
The change time is 40-60min；
(3) material after charing is sent into cooling during rolling storehouse to cool down, is then fed into the second crusher and carries out second
Grade is broken, and material after cooling is broken into the material having a size of 10-15mm；
(4) it will be sent into magnetic separator by the broken material in the second level and carry out magnetic separation, by ingredient magnetic in material
It sorts out；
(5) will magnetic material is not sent into the first circular drum and is sieved after magnetic separation, by material
The positive and negative anodes dressing sieve to fall off branches away to obtain copper aluminium collector, and the first circular drum includes the two-stage roller being arranged in series, wherein
The sieve mesh number of first order roller is 70-90 mesh, and the sieve mesh number of second level roller is 90-110 mesh；
(6) copper aluminium collector is carried out friction to break up, falls off the positive and negative anodes powder not fallen off on copper aluminium collector, and
Material is further broken up into the material having a size of 2-5mm；
(7) material after breaing up friction, which is sent into the second circular drum, to be sieved, and will be fallen off after friction is broken up
Positive and negative anodes dressing sieve branch away；
(8) the copper aluminium collector after the screening of the second circular drum is sent into copper aluminium sorting machine and is sorted, by copper
It is separated with aluminium.
Further, the fume collection by step (2) after charing, which is sent into secondary combustion chamber, carries out second-time burning, so
The flue gas after second-time burning is sent into flue gas heat-exchange unit afterwards to exchange heat, then the flue gas after heat exchange is sent into bag filter and is carried out
Then flue gas after dedusting is sent into the sour gas that alkali formula spray column is gone out in flue gas, then flue gas is sent into and is lived by dust removal process
Property charcoal adsorption tower remove flue gas in organic exhaust gas after empty.
Further, the outlet side of activated carbon adsorber connects an air-introduced machine, and the Boiler pressure control of the air-introduced machine exists
12000-15000m3/h。
Further, flue gas heat-exchange unit is using cooling indirectly, and water circulation control is in 50-80m3/h。
Further, the temperature of secondary combustion chamber is controlled at 800-1000 DEG C.
Further, in step (1), when the progress first order is broken, nitrogen is filled with into the first crusher and is protected,
Wherein, the flow control of nitrogen is in 200-500Nm3/h。
Further, in step (3), it is passed through indirect cyclic process water into cooling during rolling storehouse, material is cooled down, recirculated water
Flow control in 30-50m3/h。
Further, the dusty gas generated when the first order being crushed is collected through gas gathering mask and is sent into bag filter
In be dusted；What is generated when the second level is crushed, when magnetic separation and when the first circular drum and the second circular drum are sieved contains
Dust and gas body is collected and is sent into bag filter by dust gathering arrester and is dusted.
Further, the dusty gas generated when friction being broken up is sent into cyclone dust collectors and is dusted, then passages through which vital energy circulates
Dedusting in bag filter is re-fed into after rushing deduster dedusting.
Further, waste and old lithium ion battery is the single battery after battery modules dismantling, and battery diagonal-size is in 20cm
Hereinafter, the remaining capacity of battery is less than 15%.
It applies the technical scheme of the present invention, the battery cell after electric discharge is first subjected to the first order and is crushed, the first order is broken for
It is rough and torn, obtain the material having a size of 5-10cm；Then it controls carbonization temperature and the time carries out low-temperature carbonization, by the electrolysis in material
Liquid, binder and plastic diaphragms carry out the pyrolysis processing without dirtization；The material after cooling progress second level is crushed again, obtains ruler
The very little material for 10-15mm；Then the broken material in the second level is subjected to magnetic separation, by steel shell in material etc. it is magnetic at
It sorts out；Material after magnetic separation passes through the first circular drum progress two-stage again and filters out the positive and negative anodes powder to fall off；So
Breaing up afterwards by friction makes the positive and negative anodes powder not fallen off on copper aluminium collector fall off, then positive and negative by what is fallen off through the second circular drum
Pole dressing sieve branches away；It will finally be sorted in copper aluminium sorting machine by the copper aluminium collector of screening.Of the invention broken point
Choosing method can recycle the valuable components efficient separations such as positive and negative anodes powder, steel shell and copper aluminium in waste and old lithium ion battery, and can
By the priceless ingredient such as electrolyte, binder and plastic diaphragms without dirtyization processing, obtain the recovery value of waste and old lithium ion battery
It gives full play to；Method of the invention effectively increases the desorption of positive and negative anodes powder on battery afflux liquid by way of multiple stage crushing
Rate improves the rate of recovery of positive and negative anodes powder；The present invention realizes point of each component step by step in battery particle by multipass sort
It elects, it is less to realize other components content in the component sorted out, while also improving the rate of recovery of positive and negative anodes powder.
Detailed description of the invention
The accompanying drawings constituting a part of this application is used to provide further understanding of the present invention, and of the invention shows
Examples and descriptions thereof are used to explain the present invention for meaning property, does not constitute improper limitations of the present invention.In the accompanying drawings:
Fig. 1 shows the flow chart of cracking and sorting technique of the invention.
Specific embodiment
It should be noted that in the absence of conflict, the features in the embodiments and the embodiments of the present application can phase
Mutually combination.Below in conjunction with embodiment, the present invention will be described in detail.
As documented by background technique, existing waste and old lithium ion battery recycling generallys use the mode of manual work, work
It is big to make low efficiency, error rate, and higher cost, in order to solve this problem, it is broken that the present invention provides a kind of used Li ion cells
Sorting process.
Mode according to an embodiment of the present, provides a kind of used Li ion cell cracking and sorting technique, including with
Lower step:
(1) waste and old lithium ion battery after electric discharge is sent into the progress first order in the first crusher to be crushed, by battery cell
It is broken into the material having a size of 5-10cm；
(2) will be sent into low-temperature carbonization furnace and carbonize by the broken material of the first order, by material electrolyte,
Binder and plastic diaphragms carry out the material after pyrolysis processing carbonize, wherein carbonization temperature is controlled at 400-550 DEG C, charcoal
The change time is 40-60min；
(3) material after charing is sent into cooling during rolling storehouse to cool down, is then fed into the second crusher and carries out second
Grade is broken, and material after cooling is broken into the material having a size of 10-15mm；
(4) it will be sent into magnetic separator by the broken material in the second level and carry out magnetic separation, by ingredient magnetic in material
It sorts out；
(5) will magnetic material is not sent into the first circular drum and is sieved after magnetic separation, by material
The black powder (i.e. positive and negative anodes powder) to fall off screens out to obtain copper aluminium collector, and the first circular drum includes the two-stage rolling being arranged in series
Cylinder, wherein the sieve mesh number of first order roller is 70-90 mesh, and the sieve mesh number of second level roller is 90-110 mesh；
(6) copper aluminium collector is carried out friction to break up, falls off the black powder not fallen off on copper aluminium collector, and by object
Material is further broken up into the material having a size of 2-5mm；
(7) material after breaing up friction, which is sent into the second circular drum, to be sieved, and will be fallen off after friction is broken up
Black dressing sieve branch away；
(8) the copper aluminium collector after the screening of the second circular drum is sent into copper aluminium sorting machine and is sorted, by copper
It is separated with aluminium.
The present invention first by after electric discharge battery cell carry out the first order be crushed, the first order be broken for it is rough and torn, obtain having a size of
The material of 5-10cm；Then carbonization temperature and time are controlled to material progress low-temperature carbonization, by electrolyte, the binder in material
The pyrolysis processing without dirtization is carried out with the priceless ingredient such as plastic diaphragms；The material after cooling progress second level is crushed again, is obtained
Material having a size of 10-15mm；Then the broken material in the second level is subjected to magnetic separation, steel shell in material etc. is magnetic
Ingredient sorts out；Material after magnetic separation passes through the first circular drum again and carries out two-stage screening, the sieve mesh of control two-stage screening
Number, Effective selection go out the positive and negative anodes powder to fall off；Then breaing up by friction keeps the positive and negative anodes powder not fallen off on copper aluminium collector de-
It falls, and material is further broken up into the material of 2-5mm, then branch away the positive and negative anodes dressing sieve to fall off through the second circular drum；
It will finally be sorted in copper aluminium sorting machine by the copper aluminium collector of screening.
Cracking and sorting method of the invention can be valuable by positive and negative anodes powder, steel shell and copper aluminium in waste and old lithium ion battery etc.
The recycling of component efficient separation, and the priceless ingredient such as electrolyte, binder and plastic diaphragms in battery can be carried out without dirtization
Processing, makes the recovery value of waste and old lithium ion battery be not fully exerted；Method of the invention has by way of multiple stage crushing
Effect improves the desorption rate of positive and negative anodes powder on battery afflux liquid, improves the rate of recovery of positive and negative anodes powder；Method of the invention passes through
Multipass sort realizes the sorting out step by step of each component in battery particle, realizes other groups in the component sorted out
Divide content less, while also improving the rate of recovery of positive and negative anodes powder.Compared to the mode of existing manual work, of the invention is broken
Not only the efficiency of separation is high for broken method for separating, good separation effect, but also cost is relatively low.
During charing process, the substances such as electrolyte, binder and plastic diaphragms in battery can be pyrolyzed, and be formed
Flue gas containing flue dust, sour gas and organic exhaust gas, if will be caused to ambient enviroment directly by the flue gas emission into atmosphere
Larger pollution.For this purpose, in the present invention, fume collection of the step (2) after charing being sent into secondary combustion chamber and carries out two
Then flue gas after second-time burning is sent into flue gas heat-exchange unit and exchanged heat, then the flue gas after heat exchange is sent into cloth bag by secondary burning
Deduster is dusted processing, the flue gas after dedusting is then sent into the sour gas that alkali formula spray column is gone out in flue gas, then will
It is emptied after the organic exhaust gas that flue gas is sent into activated carbon adsorber removing flue gas.In this way, can be effectively to the cigarette generated after charing
Gas carries out purified treatment, improves the feature of environmental protection of technique of the invention.
Secondary combustion chamber, flue gas heat-exchange unit, bag filter, alkali formula spray are smoothly through in order to enable to carbonize flue gas
Tower and activated carbon adsorber remove, and the present invention connects an air-introduced machine in the outlet side of activated carbon adsorber, will by the air-introduced machine
Flue gas in retort is constantly extracted out.In actual use, the air force of the air-introduced machine has one to the extraction effect of flue gas
Fixed influence cannot well extract the flue gas in retort out, ash-laden gas may be discharged into ring around if air quantity is too small
It is polluted the environment in border, if air quantity is excessive, it is larger that it will cause equipment energy consumptions.Inventor is sent out by repetition test research
It is existing, by the Boiler pressure control of air-introduced machine in 12000-15000m3When/h, good environment protecting not only can achieve, but also be unlikely to lead
Enable consumption is excessively high.
Specifically, at 800-1000 DEG C, flue gas heat-exchange unit (is recycled using cooling indirectly for the temperature control of secondary combustion chamber
The mode that cooling water and flue gas are not directly contacted with), also, preferably by water circulation control in 50-80m3/ h, in this quantity of circulating water
Under, it not only can ensure that cooling effect well, but also not will cause the waste of excessive cooling water.
When the first order is crushed, may still have small part electricity in battery cell, if directly broken, it may occur however that rise
Fiery phenomenon.It is broken to first when the progress first order is broken in step (1) of the invention in order to avoid the generation of phenomenon on fire
It is filled with nitrogen in broken machine to be protected, also, the flow control of nitrogen is in 200-500Nm3/h.When the first order is crushed to first
The nitrogen that certain flow is filled in crusher is protected, and is made to keep inert atmosphere in the first crusher, is avoided material first
It is on fire in crusher.
Specifically, in step of the invention (3), it is passed through indirect cyclic process water into cooling during rolling storehouse, material is cooled down
(i.e. water-cooling jacket is arranged in cooling during rolling storehouse, and cooling water and material are not directly contacted with), also, the flow control of recirculated water is in 30-
50m3/h。
In order to further increase the environmental-protecting performance of present invention process, the dusty gas generated when the first order is crushed is through gas collection
Cover, which is collected and is sent into bag filter, to be dusted；When the second level is crushed, when magnetic separation and the first circular drum and
The dusty gas that second circular drum generates when sieving, which is collected and is sent into bag filter by dust gathering arrester, to be dusted；
The dusty gas generated when friction is broken up is sent into cyclone dust collectors and is dusted, and then send again after pulse dust collector dedusting
Enter dedusting in bag filter.In this way, further improving the feature of environmental protection of the technique.
In the present invention, waste and old lithium ion battery is the single battery after battery modules dismantling, and battery diagonal-size exists
20cm hereinafter, the remaining capacity of battery less than 15%.Technique of the invention is for battery diagonal-size in 20cm monomer below
Battery be it is applicable, in order to ensure the safety of shattering process, need first to put the electricity of battery to 15% before cracking and sorting
Below.
Below in conjunction with specific embodiment, the invention will be further described, but should not be construed as protecting the present invention
The limitation of range.
The main component of waste and old lithium ion battery handled by the present invention include: positive and negative anodes powder, steel shell, copper aluminium, electrolyte,
Binder and diaphragm plastics.
Embodiment
A kind of embodiment of used Li ion cell cracking and sorting technique of the present invention, process flow is as shown in Figure 1, this is broken
Sorting process the following steps are included:
Step 1: the waste and old lithium ion battery after electric discharge enters the progress first order in the first crusher through charger and is crushed, the
Level-one be broken for it is rough and torn, it is broken by the first order so that material size is in 10cm or so after broken；Meanwhile it is on fire existing to prevent
As being passed through nitrogen during broken, the flow control of nitrogen is in 300Nm3/h；
Step 2: the particle after step 1 bonds during charing to present in material into charing workshop section
Agent, electrolyte and plastic diaphragms carry out the pyrolysis processing without dirtization；Wherein, the temperature in retort maintains 530 DEG C, material
Residence time guarantee in 50min；
Step 3: being high-temperature material by the material that step 2 comes out, cooled down into material cooling during rolling storehouse, to high temperature
Material cools down, and material is cooled to room temperature carries out that the second level is broken again, and the chaff size obtained after the second level is broken is
15mm or so；Then the sorting for carrying out constituent part in particle, is magnetic separation first, the electromagnetism intensity that magnetic separator is arranged is
20000GS obtains steel shell；Material after magnetic separation enters back into and carries out screening process in the first circular drum, and the first circular drum is
Concatenated two-stage screen drum, the sieve mesh number of first order sieve are 80 mesh, and the sieve mesh number of second level sieve is 100 mesh, obtains positive and negative anodes
Powder；
Step 4: the material main component obtained after step 3 processing is copper aluminium collector, and is adhered to collector
On a small amount of positive and negative anodes powder, in order to which the positive and negative anodes powder on collector to be desorbed completely, material needs engaging friction to break up workshop section, will
Material carries out friction and breaks up, and the rate of recovery of positive and negative anodes powder on the one hand can be improved, and copper aluminium size can on the other hand had higher
Consistency, be conducive to the sorting of copper aluminium；It is rubbed break up after, the size of copper aluminium is in 3mm or so；
Step 5: the material after friction is broken up, which is sent into the second circular drum, to be sieved, by the positive and negative anodes powder to fall off point
It elects, obtains copper aluminium collector particle, then copper aluminium collector particle is sent into copper aluminium sorting machine and is sorted, is isolated
Copper and aluminium so far complete the broken and wherein sorting of valuable component of battery.
Using waste and old lithium ion battery cracking and sorting technique of the invention, it can be achieved that positive and negative anodes powder overall recovery >=98%；
The steel shell rate of recovery >=99%；Copper recovery >=95%；The residual quantity < 0.5% of cobalt in copper aluminium.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of used Li ion cell cracking and sorting technique, which is characterized in that the cracking and sorting technique the following steps are included:
(1) waste and old lithium ion battery after electric discharge is sent into the progress first order in the first crusher to be crushed, battery cell is crushed
At the material having a size of 5-10cm；
(2) it will be sent into low-temperature carbonization furnace and carbonize by the broken material of the first order, by the electrolyte in material, bonding
Agent and plastic diaphragms carry out the material after pyrolysis processing is carbonized, wherein carbonization temperature is controlled at 400-550 DEG C, charing
Between be 40-60min；
(3) material after charing is sent into cooling during rolling storehouse to cool down, it is broken is then fed into the progress second level in the second crusher
It is broken, material after cooling is broken into the material having a size of 10-15mm；
(4) it will be sent into magnetic separator by the broken material in the second level and carry out magnetic separation, ingredient magnetic in material will be sorted
Out；
(5) will magnetic material is not sent into the first roller and is sieved after magnetic separation, will fall off just in material
Negative electrode powder screens out to obtain copper aluminium collector, the first roller includes the two-stage roller being arranged in series, wherein first order roller
Sieve mesh number is 70-90 mesh, and the sieve mesh number of second level roller is 90-110 mesh；
(6) copper aluminium collector is carried out friction to break up, falls off the positive and negative anodes powder not fallen off on copper aluminium collector, and by object
Material is further broken up into the material having a size of 2-5mm；
(7) material after breaing up friction, which is sent into second tin roller, to be sieved, the positive and negative anodes that will be fallen off after friction is broken up
Dressing sieve branches away；
(8) the copper aluminium collector after second tin roller sieves is sent into copper aluminium sorting machine and is sorted, copper and aluminium are carried out
Separation.
2. used Li ion cell cracking and sorting technique according to claim 1, which is characterized in that pass through the step (2)
Fume collection after crossing charing, which is sent into secondary combustion chamber, carries out second-time burning, and the flue gas after second-time burning is then sent into flue gas
Heat exchanger exchanges heat, then the flue gas after heat exchange is sent into bag filter and is dusted processing, then by the flue gas after dedusting
It is sent into the sour gas that alkali formula spray column is gone out in flue gas, then flue gas is sent into activated carbon adsorber and removes organic waste in flue gas
It is emptied after gas.
3. used Li ion cell cracking and sorting technique according to claim 2, which is characterized in that the activated carbon adsorber
Outlet side connect an air-introduced machine, the Boiler pressure control of the air-introduced machine is in 12000-15000m3/h。
4. used Li ion cell cracking and sorting technique according to claim 2, which is characterized in that the flue gas heat-exchange unit is adopted
With indirect cooling, water circulation control is in 50-80m3/h。
5. used Li ion cell cracking and sorting technique according to claim 2, which is characterized in that the secondary combustion chamber
Temperature is controlled at 800-1000 DEG C.
6. used Li ion cell cracking and sorting technique according to claim 1, which is characterized in that in the step (1),
When the progress first order is broken, nitrogen is filled with into the first crusher and is protected, wherein the flow control of nitrogen is in 200-
500Nm3/h。
7. used Li ion cell cracking and sorting technique according to claim 1, which is characterized in that in the step (3), to
It is passed through indirect cyclic process water in cooling during rolling storehouse to cool down material, the flow control of recirculated water is in 30-50m3/h。
8. used Li ion cell cracking and sorting technique according to claim 1, which is characterized in that production when being crushed the first order
Raw dusty gas is collected and is sent into bag filter through gas gathering mask and is dusted；When the second level is crushed, when magnetic separation
And first the dusty gas that generates when sieving of roller and second tin roller be collected by dust gathering arrester and be sent into bag filter
In be dusted.
9. used Li ion cell cracking and sorting technique according to claim 8, which is characterized in that generation when breaing up friction
Dusty gas be sent into cyclone dust collectors in be dusted, be then re-fed into bag filter and remove after pulse dust collector dedusting
Dirt.
10. used Li ion cell cracking and sorting technique according to claim 1, which is characterized in that the applying waste lithium ionic
Battery is the single battery after battery modules dismantling, and battery diagonal-size is in 20cm hereinafter, the remaining capacity of battery is less than 15%.
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