CN207368092U - The rotating mechanical force and chemical cladding process of hot gas prepares the device of nickel manganese cobalt acid lithium material - Google Patents
The rotating mechanical force and chemical cladding process of hot gas prepares the device of nickel manganese cobalt acid lithium material Download PDFInfo
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- CN207368092U CN207368092U CN201721521017.7U CN201721521017U CN207368092U CN 207368092 U CN207368092 U CN 207368092U CN 201721521017 U CN201721521017 U CN 201721521017U CN 207368092 U CN207368092 U CN 207368092U
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- cyclone disk
- bagroom
- multistage cyclone
- compressed air
- heating chamber
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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Abstract
The utility model proposes the device that a kind of rotating mechanical force and chemical cladding process of hot gas prepares nickel manganese cobalt acid lithium material, including compressed air heating chamber, multistage cyclone disk, bagroom, screw spreader；The output pipe connection multistage cyclone disk of the compressed air heating chamber, the bagroom is connected by pipeline at the top of the multistage cyclone disk, material circulation loop is formed on the bottom that bag-type dust room bottom connects the multistage cyclone disk by screw spreader；The bagroom is connected with air exhauster；Material feed device and discharge nozzle are provided with the screw spreader.The utility model proposes the rotating mechanical force and chemical coating unit of hot gas, be adapted to various powder body materials cladding, overcome side effect of the water solution system method for coating to material, it also avoid the safety difficulties in the production of organic solvent system.Cyclone disk series can simply increase, and covering amount is controllable, is evenly coated.
Description
Technical field
The utility model belongs to field of energy source materials, and in particular to a kind of dress prepared for lithium ion battery electrode material
Put.
Background technology
Lithium ionic cell nickel manganese lithium cobaltate cathode material can use molecular formula LiNixMnyCo1-x-yO4Represent, abbreviation NMC.By
In NMC high comprehensive performances, it is used widely on energy-storage battery and power battery.
The surface coating decoration method of powder body material is the design needs according to structuring and functionalization, is drawn in material surface
Enter clad, one or more layers coating with different chemical compositions is applied in particle body surface face, to adapt to different technologies
Demand.Research shows that surface coating modification is the effective way for lifting NMC material electrochemical performances, especially to high nickel content NMC
Material.It is common at present to have to the surface coated method of material progress：Chemical vapour deposition technique, liquid chemical method, microencapsulation
Method, mechanochemical method etc..Wherein, the method for coating for being more applicable in commercial scale is chemical vapour deposition technique, liquid phase
Method and mechanochemical method.For NMC materials, chemical vapour deposition technique is coated with larger limitation for NMC materials
Property, and liquid phase method is coated using metallorganic liquid more, since the organic salt of cladding is mostly inflammable and explosive substances, to safe life
Production brings many hidden danger, in contrast, mechanochemical method cladding advantages.
Mechanochemical method cladding can be applied to solid-solid, solid-liquid and solid-gas reaction system, be by solid matter
Mechanical energy is inputted so that morphology, crystal structure etc. change, and induce the one of its generation physical and chemical changes
Kind technology.Specifically by the different modes of action of mechanical force, such as grind, compress, impacting, rubbing, shearing, extension form,
Realize the accumulation of mechanical energy, so that the physicochemical properties and structure of stress object change, show following three
Aspect：
(1), lattice produces defect or distortion, chemical reaction equilibrium and activation energy etc. change, and puies forward material activity
It is high；
(2), material dispersion degree increases, and becomes attritive powder or gel by mechanical crushing, or the hole with opening,
Tissue, produces new surface, specific surface area increase, and surface energy changes, and activity significantly improves；
(3), under the action of mechanical force, structure changes material, and fresh surface produces some atomic groups, promotes to react
Activity increase so that excite and accelerates generation chemical effect.
At present, relevant industries coat the positive active materials such as NMC using a kind of mechanical fusion machine, but this dress
The low production efficiency put, material charge weight is small, and in order to improve mechanical energy, mechanical fusion is confidential to ask rotating speed high, usually exists
6000rpm or so, brings great difficulty, equipment cost is high to the manufacture of speedup mechanical transmission component and axial mechanical seal.
Utility model content
For shortcoming existing for this area, the purpose of this utility model is to propose a kind of rotating mechanical force and chemical of hot gas
Cladding process prepares the device of nickel manganese cobalt acid lithium material.
The technical solution for realizing the utility model aim is：
A kind of rotating mechanical force and chemical cladding process of hot gas prepares the device of nickel manganese cobalt acid lithium material, including
Compressed air heating chamber, multistage cyclone disk, bagroom, screw spreader；
The output pipe connection multistage cyclone disk of the compressed air heating chamber；
The bagroom is connected by pipeline at the top of the multistage cyclone disk, bagroom bottom passes through the spiral shell
Material circulation loop is formed on the bottom for revolving the multistage cyclone disk of conveyer connection；
The bagroom is connected with air exhauster；
Material feed device and discharge nozzle are provided with the screw spreader.
Wherein, the multistage cyclone disk is longitudinally superimposed and fixes for 3~6 grades of cylindrical cyclonic chambers, between cyclonic chambers at different levels
Connect, be provided with symmetrical two tangential admission mouths on every grade of cyclone locular wall, all air inlets are all connected to the compressed air and add
The output pipe in hot cell.
Wherein, the compressed air heating chamber is provided with adding thermal resistance, on every output pipe of compressed air heating chamber
It is provided with air pressure regulator.The air pressure regulator is chosen as DG18 stainless steel needle-valves.
Further, the multistage cyclone disk is stainless steel inner lining zirconia ceramics material, the bottom gas of most beneath level-one
The height for revolving room is 90-120mm, and the height of other cyclonic chambers at different levels is 60-70mm.
Wherein, the bagroom includes cloth bag dust trapping chamber and pulse jet system；The cloth bag dust trapping chamber is configured with
80m2Terylene filter bag；The pulse jet system is equipped with 6 tunnels injection solenoid valve；The air exhauster is centrifugal exhaust fan.
Wherein, the screw spreader includes conveyor screw and airlock；Airlock be arranged on the screw spreader into
Between the entrance and material feed device that enter multistage cyclone disk.
Preferably, the conveyor screw length is 800~1500mm；The discharge nozzle butterfly valve is electromagnetism butterfly valve；The row
Gas wind turbine is centrifugal exhaust fan, and the volume of the airlock is 2~5L.
Using the device of the utility model, the rotating mechanochemical method cladding of hot gas prepares the side of nickel manganese cobalt acid lithium material
Method, including step：
(1) using the sulfate liquor of nickel manganese cobalt as raw material, coprecipitation method prepares nickel manganese cobalt under inert atmosphere protection
After hydroxide, Ni-Mn-Co-O compound is obtained when 400-800 DEG C of roasting 2-6 is small, is then mixed with lithium carbonate or lithium hydroxide,
When 700-1000 DEG C of roasting 6-16 is small, nickel manganese cobalt acid lithium material is obtained；
(2) add coating and mix, the coating is one kind or more in the oxide or phosphate of Al, Zr, Ti
Kind, using the device to mixture carry out hot gas rotation circular treatment 2~6 it is small when；
(3) through the material that cyclone is handled when roasting 3~10 is small under the conditions of oxidizing atmosphere, temperature range 600-1000
℃。
Wherein, coating and nickel manganese cobalt acid lithium material press the total mole number of metal and nickel manganese cobalt in coating in step (2)
The ratio between total mole number be 0.002-0.05:1 ratio mixing, together adds the multistage cyclone from the material feed device
Disk.
Wherein, the operation of step (2) hot gas rotation circular treatment is：The compressed air of 0.7-0.8MPa is heated to
300-400℃；Compressed air formed high speed bumpy flow, make hot gas rotation circulating treatment procedure in powder granule linear velocity in 10-
Between 30m/s, the circuit cycle processing 2~6 that powder is formed through the multistage cyclone disk, bagroom, screw spreader is small
When.
The beneficial effects of the utility model are：
The utility model proposes the rotating mechanical force and chemical coating unit of hot gas, be adapted to various powder body materials cladding, gram
Side effect of the water solution system method for coating to material has been taken, it also avoid the safety difficulties in the production of organic solvent system.
Cyclone disk series can simply increase, and covering amount is controllable, is evenly coated.
Existing microcosmic shape is kept using the lithium ionic cell nickel manganese lithium cobaltate cathode material of the utility model device manufacturing
Looks, crystallinity are high.Surface cladding processing improves the stability of material, and product material shows excellent chemical property.This
The method and apparatus technique that utility model proposes is simple, and production efficiency is high, and manufacture cost is low, is adapted to industrialized production.
Brief description of the drawings
Fig. 1 is the schematic diagram that the rotating mechanical force and chemical cladding process of the utility model hot gas prepares nickel manganese cobalt acid lithium material.
Fig. 2 is the structure for the device that the rotating mechanical force and chemical cladding process of the utility model hot gas prepares nickel manganese cobalt acid lithium material
Figure.
Fig. 3 is the top view for the device that the rotating mechanical force and chemical cladding process of hot gas prepares nickel manganese cobalt acid lithium material.
In Fig. 2 and Fig. 3,1 is compressed air heating chamber, and 2 be air pressure regulator, and 3 be multistage cyclone disk, and 4 be feeding pipe butterfly
Valve, 5 be cloth bag pulse blowing valve, and 6 be bagroom, and 7 be air exhauster, and 8 be conveyor screw, and 9 be discharge nozzle butterfly valve, and 10 are
Airlock, 11 be bottom cyclonic chamber.
Embodiment
Now illustrate the utility model with following embodiments, but be not intended to limit the scope of the present invention.In embodiment
The means used, unless otherwise instructed, using the means of this area routine.
Illustrate the utility model below by most preferred embodiment.Those skilled in the art institute it should be understood that, embodiment only
For illustrating the utility model rather than for limiting the scope of the utility model.
Embodiment 1.
Fig. 2 and Fig. 3 shows that a kind of rotating mechanical force and chemical cladding process of hot gas prepares the device of nickel manganese cobalt acid lithium material.The dress
Put including
Compressed air heating chamber 1, multistage cyclone disk 3, bagroom 6, screw spreader.Compressed air heating chamber 1
The multistage cyclone disk 3 of output pipe connection；Bagroom 6, bagroom 6 are connected by pipeline at the top of the multistage cyclone disk
Material circulation loop is formed on the bottom that bottom connects multistage cyclone disk 3 by the screw spreader；Bagroom 6 is connected with
Air exhauster 7；Material feed device and discharge nozzle are provided with the screw spreader.
In the present embodiment, compressed air heating chamber 1 uses labyrinth type resistance heating case, and power 60kW, air is compressed
0.7~0.8MPa that machine is sent, 10m3The pressure-air of/min is heated to 300~400 DEG C；Air pressure regulator 2 uses DN18 not
Become rusty draw point valve；Multistage cyclone disk 3 is stacked and is fixed using level Four cyclonic chamber, is cylindrical conical stainless steel room liner zirconia ceramics,
The size of bottom cyclonic chamber 11 is 260 × 100mm of Φ, and other cyclone chamber sizes at different levels are 260 × 65mm of Φ, every grade of cyclonic chamber pair
Title is provided with two tangential admission mouths, is all connected to compressed air efferent duct.
The screw spreader includes conveyor screw 8 and airlock 10；Airlock is arranged on the screw spreader and enters
Between the entrance and material feed device of bottom cyclonic chamber 11, the feeding pipe butterfly valve 4 set on material feed device is DG100 electricity
Magnetic butterfly valve.
In the present embodiment, cloth bag pulse blowing valve 5 is blown solenoid valve for six tunnel of pulse；Bagroom 6 is terylene filter bag,
80m2；Air exhauster 7 is 9-19N5 centrifugal high pressure exhaust fans, 7.5kW；Conveyor screw 8 is Φ 150 × 1200,1.5kW；Discharging
Pipe butterfly valve 9 is DG100 electromagnetism butterfly valves；The model TZYGF2.5 of airlock 10, volume 2.5L, rotating speed 0~50 is adjustable, power
0.75kW。
Flow shown in Figure 1.Encapsulation steps are：
(1), by obtained NMC materials and covering (the nanometer Al of high activity2O3、MgO、TiO2、AlPO4Deng) in proportion
Mixing；
(2), 1 pre- hot compressed air of compressed air heating chamber starts pass to certain temperature after being first passed through compressed air in a small amount
Wind device 10, opens feeding pipe butterfly valve 4, opens conveyor screw 8, the material mixed is added in equipment by feed arrangement
Face, feeding pipe butterfly valve 4 is closed after the completion of to be fed, then opens the pressure that atmospheric pressure regulating valve 2 increases compressed air, multistage cyclone
The linear velocity of powder particle reaches 10-30m/s scopes in disk, and the powder moved under high speed cyclone state is entered by pipeline
In cloth pocket, bagroom bottom is then squeezed into by pulse blowing valve, then is returned by conveyor screw 8 and airlock 10 more
Level cyclone disk realizes circulation, stops when 2~6 is small after iterative cycles, closes airlock 10, opens discharge nozzle butterfly valve 9 and releases
Material, completes cladding operation.
During can improve the activity of powder material by adjusting compressed air temperature, by adjust air pressure increase
Cyclone intensity, the path for lengthening cyclone by increasing cyclone disk series and coating；
(3), through the material that cyclone is handled when roasting 3~10 is small under the conditions of oxidizing atmosphere, temperature range is 600~1000
DEG C, the nickel manganese cobalt acid lithium material coated.
Embodiment 2
The device of the rotating mechanochemical method coated lithium ion battery nickel manganese cobalt acid lithium material of hot gas, including compressed air plus
Hot cell, multistage cyclone disk, bagroom, screw spreader；The output pipe connection of the compressed air heating chamber is described more
Level cyclone disk；The bagroom is connected by pipeline at the top of the multistage cyclone disk, bag-type dust room bottom passes through
Material circulation loop is formed on the bottom of the screw spreader connection multistage cyclone disk；The bagroom is connected with exhaust wind
Machine；Material feed device and discharge nozzle are provided with the screw spreader.
In the present embodiment, multistage cyclone disk is stacked and fixed using six grades, for cylindrical conical stainless steel room liner zirconium oxide pottery
Porcelain, the size of bottom cyclonic chamber 11 are 250 × 100mm of Φ, and the sizes of other cyclonic chambers at different levels is 250 × 65mm of Φ, every grade of gas
Rotation room is equipped with two tangential admission mouths, is all connected to compressed air efferent duct.
Other are set with embodiment 1.
Using the device of the present embodiment, material cladding operation is：
Using the sulfuric acid mixed salt solution of nickel manganese cobalt as raw material, using sodium hydroxide solution as precipitating reagent, in inert atmosphere protection
Lower coprecipitation method prepares nickel magnesium cobalt hydroxide, wherein, Ni:Mn:Co atomic ratios are 1:1:1.Then it is small in 800 DEG C of roastings 2
When obtain Ni-Mn-Co-O compound, then mix with the lithium carbonate of stoichiometric ratio or lithium hydroxide, when 1000 DEG C of roastings 6 are small, obtain
To nickel manganese cobalt acid lithium material LiNi1/3Mn1/3Co1/3O2(abbreviation NCM111).
Take NMC111 materials 20kg and high-activity nano Al2O3400g, mixes 2h in V-Mixer.
1 pre- hot compressed air of compressed air heating chamber starts pass wind to 250~300 DEG C after being first passed through compressed air in a small amount
Device 10；Feeding pipe butterfly valve 4 is opened, conveyor screw 8 is opened, NMC111 and Al will be mixed2O3Mixture added by feed arrangement
Enter, feeding pipe butterfly valve 4 is closed after the completion of to be fed；Then it is 0.6~0.7Mp to adjust pressure by air pressure regulator 2, and material exists
When circulation 2 is small in multistage cyclone disk, bagroom, screw spreader；Stop airlock 10, open discharge nozzle butterfly valve 9 and discharge.
Through the material that cyclone is handled when roasting 3 is small under the conditions of oxidizing atmosphere, temperature is 1000 DEG C, obtains aluminium cladding
NCM111 positive active materials.Product tap density is 2.55g/cm3, than surface 0.38m2。
The NCM111 materials that above-mentioned aluminium coats are added to the acetylene black conductor of 3%wt., the PVDF binding agents stirring of 5%wt.
Anode sizing agent uniformly is made, is then coated uniformly on aluminium foil, being compacted backlash through 80 DEG C of drying is made circular pole piece, with lithium metal
Piece simulates half-cell progress charge-discharge test electrode to be made button, and current density carries out discharge and recharge, discharge and recharge for 30mA/g
Voltage range is 2.75~4.2V, reversible specific capacity 156.8mAh/g.Formed with above-mentioned anode sizing agent and graphite cathode
523450 test batteries, at 55 DEG C, 1C capacity retention ratios are 95.1% after 500 circulations.
Embodiment above is only that the preferred embodiment of the utility model is described, not to the utility model
Scope be defined, on the premise of the spirit of the design of the utility model is not departed from, this area ordinary skill technical staff to this
The all variations and modifications that the technical solution of utility model is made, should all fall into the guarantor that claims of the utility model determine
In the range of shield.
Claims (7)
1. a kind of rotating mechanical force and chemical cladding process of hot gas prepares the device of nickel manganese cobalt acid lithium material, it is characterised in that including
Compressed air heating chamber, multistage cyclone disk, bagroom, screw spreader；
The output pipe connection multistage cyclone disk of the compressed air heating chamber；
The bagroom is connected by pipeline at the top of the multistage cyclone disk, bag-type dust room bottom passes through the spiral biography
The bottom of the multistage cyclone disk of device connection is sent to form material circulation loop；
The bagroom is connected with air exhauster；
Material feed device and discharge nozzle are provided with the screw spreader.
2. device according to claim 1, it is characterised in that the multistage cyclone disk is indulged for 3-6 grades of cylindrical cyclonic chambers
To being superimposed and fixing, connected between cyclonic chambers at different levels, symmetrical two tangential admission mouths, Suo Youjin are provided with every grade of cyclone locular wall
Gas port is all connected to the output pipe of the compressed air heating chamber.
3. device according to claim 1, it is characterised in that the compressed air heating chamber is provided with adding thermal resistance, from
Air pressure regulator is both provided with every output pipe of compressed air heating chamber output.
4. the apparatus of claim 2, it is characterised in that the multistage cyclone disk is stainless steel inner lining zirconia ceramics
Material, the height of the bottom cyclonic chamber of most beneath level-one is 90-120mm, and the height of other cyclonic chambers at different levels is 60-70mm.
5. device according to claim 1, it is characterised in that the bagroom includes cloth bag dust trapping chamber and pulse is sprayed
Blow system；The cloth bag dust trapping chamber is configured with 80m2Terylene filter bag；The pulse jet system is equipped with 6 tunnels injection solenoid valve；Institute
It is centrifugal exhaust fan to state air exhauster.
6. according to claim 1-5 any one of them devices, it is characterised in that the screw spreader include conveyor screw and
Airlock；Airlock is arranged on the screw spreader and enters between the entrance and feed arrangement of multistage cyclone disk.
7. device according to claim 6, it is characterised in that the conveyor screw length is 800-1500mm；It is described go out
Expects pipe butterfly valve is electromagnetism butterfly valve；The volume of the airlock is 2-5L.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721521017.7U CN207368092U (en) | 2017-11-14 | 2017-11-14 | The rotating mechanical force and chemical cladding process of hot gas prepares the device of nickel manganese cobalt acid lithium material |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721521017.7U CN207368092U (en) | 2017-11-14 | 2017-11-14 | The rotating mechanical force and chemical cladding process of hot gas prepares the device of nickel manganese cobalt acid lithium material |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107768666A (en) * | 2017-11-14 | 2018-03-06 | 北京圣比和科技有限公司 | The rotating mechanical force and chemical cladding process of hot gas prepares the device and method of nickel manganese cobalt acid lithium |
-
2017
- 2017-11-14 CN CN201721521017.7U patent/CN207368092U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107768666A (en) * | 2017-11-14 | 2018-03-06 | 北京圣比和科技有限公司 | The rotating mechanical force and chemical cladding process of hot gas prepares the device and method of nickel manganese cobalt acid lithium |
| CN107768666B (en) * | 2017-11-14 | 2023-12-22 | 北京圣比和科技有限公司 | Method for preparing lithium nickel manganese cobalt oxide by using thermal cyclone type mechanochemical cladding method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: GEJIU SHENGBIHE INDUSTRIAL Co.,Ltd. Assignor: BEIJING SUPERHOO TECHNOLOGY CO.,LTD. Contract record no.: X2022440020006 Denomination of utility model: Device for preparing lithium nickel manganese cobalt oxide material by hot gas spinning mechanochemical coating method Granted publication date: 20180515 License type: Exclusive License Record date: 20220629 |
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| EE01 | Entry into force of recordation of patent licensing contract |