CN108117071A - It is a kind of crushed using graphitized electrode after dedusting tailing prepare modified negative material method - Google Patents
It is a kind of crushed using graphitized electrode after dedusting tailing prepare modified negative material method Download PDFInfo
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- CN108117071A CN108117071A CN201711281871.5A CN201711281871A CN108117071A CN 108117071 A CN108117071 A CN 108117071A CN 201711281871 A CN201711281871 A CN 201711281871A CN 108117071 A CN108117071 A CN 108117071A
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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
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/58—Selection of substances as active materials, active masses, active liquids of inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFy; of polyanionic structures, e.g. phosphates, silicates or borates
- H01M4/583—Carbonaceous material, e.g. graphite-intercalation compounds or CFx
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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Abstract
The present invention relates to it is a kind of crushed using graphitized electrode after dedusting tailing prepare modified negative material method, include the following steps：(1) tailing re-grading；(2) material reshaping after being classified；(3) material coating modification after shaping；(4) it is carbonized；(5) screening magnetic separation packaging is broken up in mixing.The present invention gropes for the byproduct by the elaboration of disintegrating apparatus, and the little particle negative material that fitting system improves to obtain the high granularity concentration of tap density can directly apply to middle-end field of batteries (3C batteries, energy-storage battery etc.).Product direct cost is less than 10,000 yuan/ton, and the negative material market price of similar products index is per ton more than 2.5 ten thousand, and value-added content of product improves 10 times.
Description
Technical field
The present invention relates to it is a kind of crushed using graphitized electrode after dedusting tailing prepare modified negative material method, belong to
Electrode material preparing technical field.
Background technology
If existing negative material by the use of graphitized electrode is broken crushed as raw material after, general yield can directly be treated as
Product 60%, wherein have 40% dust cleaning case micro mist since the low granularity of tap density is small, processing performance when making cell size
Very poor, cathode factory is just when byproduct externally sells general 1500-2000/ tons or so of price.
The content of the invention
It is an object of the invention to provide it is a kind of crushed using graphitized electrode after dedusting tailing prepare modified cathode material
Material method, preferably to improve using effect.
To achieve these goals, technical scheme is as follows.
It is a kind of crushed using graphitized electrode after dedusting tailing prepare modified negative material method, include the following steps：
(1) tailing re-grading：
Using the dust-removing powder that graphitized electrode flour is collected after broken by existing equipment re-grading, by original dust-removing powder tailing
Granularity D10 is 1.958um, d50 5.246um, d90 10.124um, tap 0.37g/cm3, specific surface area 11.258m2/
G, carbon amounts 99.785, capacity is 340.5mah/g for the first time, and efficiency is 83.5% for the first time, and material is put into impact grinder
In, impact grinding is made of crushing host, crushing chamber internal classification, cyclone separator, dust cleaning case, air-introduced machine, host, internal classification machine,
Air-introduced machine configures frequency converter, the graphite powder after grading after micro-powder graded processing is classified as follows by parameter regulation
Index granularity D10 is 3.958um, d50 8.246um, d90 16.124um, tap 0.51g/cm3, specific surface area is
10.258m2/ g, carbon amounts 99.785%, capacity is 345.5mah/g to 0.1C for the first time, and efficiency is 85.2% for the first time, and yield is total
The 50-60% of raw material tailing；Technological parameter：Pulverizer system is by crushing host, crushing chamber internal classification, cyclone separator, dedusting
Case, air-introduced machine composition；Crush host producer configuration 110KW four-stage motors, host upper current limit is existed with electric frequency device control in 220A
130A makes equipment keep the slow-speed of revolution, and host internal structure is made of mill, gear ring, tup, grading wheel, crushing chamber internal classification producer
Configure 22KW four-stage motors, upper current limit makes grading wheel keep the slow-speed of revolution in 44A, with frequency control in 25A, cyclone separator this
Place's innovation introduces extraneous Secondary Air using implantation welding DN40mm calibers with ball valve, passes through control ball valve angle size Secondary Air
Introduction volume size accordingly increases reduction, increases the granularity D10 of Secondary Air introducing graphite powder and can get a promotion, the micro mist amount in product
To reduce, but cannot be introduced into material of the excessive Secondary Air otherwise in whirlwind will blanking seriously reduce, graphite powder can be drawn onto
In dust cleaning case.Air-introduced machine producer standard configuration 35KW motors, electric current 70A is since the apparent density of tailing micro mist is very light, according to normal wind
Amount control will be extracted into dust cleaning case entire micro mist, control air-introduced machine electric current here in 40A, reduce air quantity so as to be entirely
System, which could be classified, obtains qualified product.
(2) material reshaping after being classified：
Material after classification can there are some problem, processing performance poles in slurry process is prepared due to the too low batteries of tap
Difference, by the material after classification again by trimmer, trimmer module special construction is beneficial to improve product tap density, trimmer
It is made of two series connection of host crushing chamber, outer grader, cyclone separator, dust cleaning case, air-introduced machines, the outer hierarchical arrangement frequency conversion of host
Device passes through the material index after parameter regulation shaping：Granularity D10 be 4.358um, d50 8.646um, d90 17.224um,
Tap is 0.809g/cm3, specific surface area 10.258m2/ g, carbon amounts 99.785%, capacity is 345.5mah/g to 0.1C for the first time,
Efficiency is the 40-48% that 84.2%. yields are total raw material tailing micro mist for the first time；Technological parameter：Trimmer structure is with crushing and classification
Machine structure is similar, and will crush host and be cascaded with two increases the time of micro mist reshaping, and the tup on internal mill is by original
First cuboid makes positive six rhombohedreons structure into, increases the time of contact of micro mist and tup so as to reach the tap density for promoting micro mist
The effect of TAP.
(3) material coating modification after shaping：
By the graphite after shaping according to graphite：The 100 of natural rock asphalt:2 mass ratio coats 15 in high-speed mixer
Minute, obtain presoma cladding negative material；Wherein, natural rock asphalt produces for Guangyuan, granularity 1-2um in 200 DEG C of softening point；
(4) it is carbonized：
By presoma cladding negative material carbonization 1100 degree of high temperature nitrogen protection carbonizations of pusher furnace, it is negative to obtain modified carbonization
Pole material；
(5) screening magnetic separation packaging is broken up in mixing：
It is broken up being mixed in the graphite powder input mixer after carbonization, then crosses 250 mesh screen magnetic separation removals and obtain finally
Modified negative material index is that granularity D10 is 4.858um, d50 8.946um, d90 17.724um, tap 0.91g/cm3,
Specific surface area is 3.258m2/ g, carbon amounts 99.835%, iron content are less than 100ppm, and capacity is half-cell 0.1C for the first time
342.5mah/g, efficiency is 91.24% for the first time, and pole piece compaction density 1.55g/cm3, yield is the 40- of total raw material tailing micro mist
48%.
The advantageous effect of the invention is：The present invention gropes for the byproduct by the elaboration of disintegrating apparatus, accessory system
System improve obtain the little particle negative material that the high granularity of tap density is concentrated can directly apply to middle-end field of batteries (3C batteries,
Energy-storage battery etc.).For product direct cost less than 10,000 yuan/ton, the negative material market price of similar products index is more than 2.5 ten thousand often
Ton, value-added content of product improve 10 times.
Description of the drawings
Fig. 1 is the product SEM figures prepared in the present embodiment.
Specific embodiment
The specific embodiment of the present invention is described with reference to embodiment, to be better understood from the present invention.
Embodiment
Dedusting tailing after being crushed using graphitized electrode in the present embodiment prepares modified negative material method, including such as
Lower step：
(1) tailing re-grading：
Using the dust-removing powder that graphitized electrode flour is collected after broken by existing equipment re-grading, by original dust-removing powder tailing
Granularity D10 is 1.958um, d50 5.246um, d90 10.124um, tap 0.37g/cm3, specific surface area 11.258m2/
G, carbon amounts 99.785, capacity is 340.5mah/g for the first time, and efficiency is 83.5% for the first time, and material is put into impact grinder
In, impact grinding is made of crushing host, crushing chamber internal classification, cyclone separator, dust cleaning case, air-introduced machine, host, internal classification machine,
Air-introduced machine configures frequency converter, the graphite powder after grading after micro-powder graded processing is classified as follows by parameter regulation
Index granularity D10 is 3.958um, d50 8.246um, d90 16.124um, tap 0.51g/cm3, specific surface area is
10.258m2/ g, carbon amounts 99.785%, capacity is 345.5mah/g to 0.1C for the first time, and efficiency is 85.2% for the first time, and yield is total
The 50-60% of raw material tailing；Technological parameter：Pulverizer system is by crushing host, crushing chamber internal classification, cyclone separator, dedusting
Case, air-introduced machine composition；Crush host producer configuration 110KW four-stage motors, host upper current limit is existed with electric frequency device control in 220A
130A makes equipment keep the slow-speed of revolution, and host internal structure is made of mill, gear ring, tup, grading wheel, crushing chamber internal classification producer
Configure 22KW four-stage motors, upper current limit makes grading wheel keep the slow-speed of revolution in 44A, with frequency control in 25A, cyclone separator this
Place's innovation introduces extraneous Secondary Air using implantation welding DN40mm calibers with ball valve, passes through control ball valve angle size Secondary Air
Introduction volume size accordingly increases reduction, increases the granularity D10 of Secondary Air introducing graphite powder and can get a promotion, the micro mist amount in product
To reduce, but cannot be introduced into material of the excessive Secondary Air otherwise in whirlwind will blanking seriously reduce, graphite powder can be drawn onto
In dust cleaning case.Air-introduced machine producer standard configuration 35KW motors, electric current 70A is since the apparent density of tailing micro mist is very light, according to normal wind
Amount control will be extracted into dust cleaning case entire micro mist, control air-introduced machine electric current here in 40A, reduce air quantity so as to be entirely
System, which could be classified, obtains qualified product.
(2) material reshaping after being classified：
Material after classification can there are some problem, processing performance poles in slurry process is prepared due to the too low batteries of tap
Difference, by the material after classification again by trimmer, trimmer module special construction is beneficial to improve product tap density, trimmer
It is made of two series connection of host crushing chamber, outer grader, cyclone separator, dust cleaning case, air-introduced machines, the outer hierarchical arrangement frequency conversion of host
Device passes through the material index after parameter regulation shaping：Granularity D10 be 4.358um, d50 8.646um, d90 17.224um,
Tap is 0.809g/cm3, specific surface area 10.258m2/ g, carbon amounts 99.785%, capacity is 345.5mah/g to 0.1C for the first time,
Efficiency is the 40-48% that 84.2%. yields are total raw material tailing micro mist for the first time；Technological parameter：Trimmer structure is with crushing and classification
Machine structure is similar, and will crush host and be cascaded with two increases the time of micro mist reshaping, and the tup on internal mill is by original
First cuboid makes positive six rhombohedreons structure into, increases the time of contact of micro mist and tup so as to reach the tap density for promoting micro mist
The effect of TAP.
(3) material coating modification after shaping：
By the graphite after shaping according to graphite：The 100 of natural rock asphalt:2 mass ratio coats 15 in high-speed mixer
Minute, obtain presoma cladding negative material；Wherein, natural rock asphalt produces for Guangyuan, granularity 1-2um in 200 DEG C of softening point；
(4) it is carbonized：
By presoma cladding negative material carbonization 1100 degree of high temperature nitrogen protection carbonizations of pusher furnace, it is negative to obtain modified carbonization
Pole material；
(5) screening magnetic separation packaging is broken up in mixing：
It is broken up being mixed in the graphite powder input mixer after carbonization, then crosses 250 mesh screen magnetic separation removals and obtain finally
Modified negative material index is that granularity D10 is 4.858um, d50 8.946um, d90 17.724um, tap 0.91g/cm3,
Specific surface area is 3.258m2/ g, carbon amounts 99.835%, iron content are less than 100ppm, and capacity is half-cell 0.1C for the first time
342.5mah/g, efficiency is 91.24% for the first time, and pole piece compaction density 1.55g/cm3, yield is the 40- of total raw material tailing micro mist
48%, as shown in figure 1 and table 1.
The above is the preferred embodiment of the present invention, it is noted that for those skilled in the art
For, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also considered as
Protection scope of the present invention.
Claims (1)
1. it is a kind of crushed using graphitized electrode after dedusting tailing prepare modified negative material method, it is characterised in that：Including
Following steps：
(1) tailing re-grading：
Using the dust-removing powder that graphitized electrode flour is collected after broken by existing equipment re-grading, by original dust-removing powder tailing granularity
D10 is 1.958um, d50 5.246um, d90 10.124um, tap 0.37g/cm3, specific surface area 11.258m2/ g, carbon
It measures as 99.785, capacity is 340.5mah/g for the first time, and efficiency is 83.5% for the first time, and material is put into impact grinder, punching
It hits mill to be made of crushing host, crushing chamber internal classification, cyclone separator, dust cleaning case, air-introduced machine, host, internal classification machine, air-introduced machine
Frequency converter is configured, the graphite powder index grain after grading after micro-powder graded processing is classified as follows by parameter regulation
Degree D10 is 3.958um, d50 8.246um, d90 16.124um, tap 0.51g/cm3, specific surface area 10.258m2/ g,
Carbon amounts is that capacity is 345.5mah/g to 99.785%, 0.1C for the first time, and efficiency is 85.2% for the first time, and yield is total raw material tailing
50-60%；Technological parameter：Pulverizer system is by crushing host, crushing chamber internal classification, cyclone separator, dust cleaning case, air inducing unit
Into；Crush host producer configuration 110KW four-stage motors, for host upper current limit in 220A, controlled with electric frequency device makes equipment in 130A
The slow-speed of revolution is kept, host internal structure is made of mill, gear ring, tup, grading wheel, crushing chamber internal classification producer configuration 22KW tetra-
Grade motor, upper current limit make grading wheel keep the slow-speed of revolution in 44A, with frequency control in 25A, and cyclone separator innovates use herein
Implantation welding DN40mm calibers introduce extraneous Secondary Air with ball valve, pass through the introduction volume size of control ball valve angle size Secondary Air
Corresponding increase is reduced, and is increased the granularity D10 of Secondary Air introducing graphite powder and can be got a promotion, and the micro mist amount in product will be reduced, but
Cannot be introduced into material of the excessive Secondary Air otherwise in whirlwind will blanking seriously reduce, graphite powder can be drawn onto in dust cleaning case；
Air-introduced machine producer standard configuration 35KW motors, electric current 70A, will according to normal Boiler pressure control since the apparent density of tailing micro mist is very light
Entire micro mist is extracted into dust cleaning case, controlling air-introduced machine electric current here, reduction air quantity could be classified so as to whole system in 40A
Obtain qualified product；
(2) material reshaping after being classified：
Since the too low batteries of tap can be there are some problem in slurry process is prepared, processing performance is very poor for material after classification, will
Material after classification is again by trimmer, and trimmer module special construction is beneficial to improve product tap density, and trimmer is by two
A host crushing chamber series connection, outer grader, cyclone separator, dust cleaning case, air-introduced machine composition, the outer hierarchical arrangement frequency converter of host,
Pass through the material index after parameter regulation shaping：Granularity D10 is 4.358um, d50 8.646um, d90 17.224um, tap
For 0.809g/cm3, specific surface area 10.258m2/ g, carbon amounts 99.785%, capacity is 345.5mah/g to 0.1C for the first time, for the first time
Efficiency is the 40-48% that 84.2%. yields are total raw material tailing micro mist；Technological parameter：Trimmer structure is with pulverizing grading machine knot
Structure is similar, and will crush host and be cascaded with two increases the time of micro mist reshaping, and the tup on internal mill is by original
Cuboid makes positive six rhombohedreons structure into, increases the time of contact of micro mist and tup so as to reach the tap density TAP for promoting micro mist
Effect；
(3) material coating modification after shaping：
By the graphite after shaping according to graphite：The 100 of natural rock asphalt:2 mass ratio coats 15 points in high-speed mixer
Clock obtains presoma cladding negative material；Wherein, natural rock asphalt produces for Guangyuan, granularity 1-2um in 200 DEG C of softening point；
(4) it is carbonized：
By presoma cladding negative material carbonization 1100 degree of high temperature nitrogen protection carbonizations of pusher furnace, modified carbonization cathode material is obtained
Material；
(5) screening magnetic separation packaging is broken up in mixing：
It is broken up being mixed in the graphite powder input mixer after carbonization, then crosses 250 mesh screen magnetic separation removals and be finally modified
Negative material index is that granularity D10 is 4.858um, d50 8.946um, d90 17.724um, tap 0.91g/cm3, compare table
Area is 3.258m2/ g, carbon amounts 99.835%, iron content are less than 100ppm, and capacity is 342.5mah/ to half-cell 0.1C for the first time
G, efficiency is 91.24% for the first time, and pole piece compaction density 1.55g/cm3, yield is the 40-48% of total raw material tailing micro mist.
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| CN201711281871.5A CN108117071A (en) | 2017-12-07 | 2017-12-07 | It is a kind of crushed using graphitized electrode after dedusting tailing prepare modified negative material method |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108706582A (en) * | 2018-06-27 | 2018-10-26 | 河南易成新能源股份有限公司 | The preparation method of artificial plumbago negative pole material |
| CN110137449A (en) * | 2019-04-24 | 2019-08-16 | 漳州巨铭石墨材料有限公司 | A kind of modified negative electrode material of lithium ion battery and its method of modifying |
| CN110611100A (en) * | 2019-10-07 | 2019-12-24 | 赣州市瑞富特科技有限公司 | Method for reducing specific surface area of graphite negative electrode material of lithium ion battery |
| CN110729455A (en) * | 2019-10-24 | 2020-01-24 | 石家庄尚太科技有限公司 | Preparation method of lithium ion negative electrode material and lithium ion negative electrode material |
| CN110872118A (en) * | 2018-08-31 | 2020-03-10 | 湛江市聚鑫新能源有限公司 | Preparation method and device of spherical graphite |
| CN112670504A (en) * | 2020-12-25 | 2021-04-16 | 宁波杉杉新材料科技有限公司 | Modified resistance material, graphite negative electrode material containing modified resistance material, and preparation method and application of graphite negative electrode material |
-
2017
- 2017-12-07 CN CN201711281871.5A patent/CN108117071A/en not_active Withdrawn
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108706582A (en) * | 2018-06-27 | 2018-10-26 | 河南易成新能源股份有限公司 | The preparation method of artificial plumbago negative pole material |
| CN110872118A (en) * | 2018-08-31 | 2020-03-10 | 湛江市聚鑫新能源有限公司 | Preparation method and device of spherical graphite |
| CN110872118B (en) * | 2018-08-31 | 2021-08-31 | 湛江市聚鑫新能源有限公司 | Preparation method and device of spherical graphite |
| CN110137449A (en) * | 2019-04-24 | 2019-08-16 | 漳州巨铭石墨材料有限公司 | A kind of modified negative electrode material of lithium ion battery and its method of modifying |
| CN110611100A (en) * | 2019-10-07 | 2019-12-24 | 赣州市瑞富特科技有限公司 | Method for reducing specific surface area of graphite negative electrode material of lithium ion battery |
| CN110729455A (en) * | 2019-10-24 | 2020-01-24 | 石家庄尚太科技有限公司 | Preparation method of lithium ion negative electrode material and lithium ion negative electrode material |
| CN112670504A (en) * | 2020-12-25 | 2021-04-16 | 宁波杉杉新材料科技有限公司 | Modified resistance material, graphite negative electrode material containing modified resistance material, and preparation method and application of graphite negative electrode material |
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Application publication date: 20180605 |