CN110508179A - A kind of battery production pulping device and pulping process - Google Patents
A kind of battery production pulping device and pulping process Download PDFInfo
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- CN110508179A CN110508179A CN201910771729.1A CN201910771729A CN110508179A CN 110508179 A CN110508179 A CN 110508179A CN 201910771729 A CN201910771729 A CN 201910771729A CN 110508179 A CN110508179 A CN 110508179A
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- pipe
- dispersion
- agitator tank
- operated valve
- pneumatic operated
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
- B01F27/05—Stirrers
- B01F27/11—Stirrers characterised by the configuration of the stirrers
- B01F27/19—Stirrers with two or more mixing elements mounted in sequence on the same axis
- B01F27/192—Stirrers with two or more mixing elements mounted in sequence on the same axis with dissimilar elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
- B01F27/80—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis
- B01F27/90—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis with paddles or arms
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
- B01F27/80—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis
- B01F27/93—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis with rotary discs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/71—Feed mechanisms
- B01F35/717—Feed mechanisms characterised by the means for feeding the components to the mixer
Abstract
It includes agitating device and feeding device that the present invention, which provides a kind of battery production pulping device and pulping process, the pulping device,；The agitating device includes agitator tank and the dispersion impeller that is mounted in the agitator tank；The feeding device includes the storage device being sequentially communicated from top to bottom, first pipe and second pipe；Wherein, one end of the second pipe is connected to the agitator tank and close to the dispersion impeller, and the other end of the second pipe is connected to dry gas.Compared with the prior art, the present invention enters the driving device of agitator tank using dry gas as powder, and powder is continuously directly blown near dispersion impeller, while the high revolving speed effect of dispersion impeller in addition, slurry is dispersed more uniform, while the slurry of output is also preferably guaranteed.And feeding device and agitating device work at the same time, and are also stirring while charging, and the stirring whole operating time can so be greatly saved, improve production efficiency.
Description
Technical field
The invention belongs to battery pole piece production technical field, in particular to a kind of battery production pulping device and slurrying side
Method.
Background technique
Battery pole piece manufacturing process can be divided into slurry preparation, slurry coating, pole piece roll-in, cutting and dry five works
Sequence.Although five processes can be revised according to the difference of manufacturing process, slurry preparation as electrode preparation most it is basic most
Crucial one of process, either which kind of technique, this procedure are all indispensable.The quality of slurry directly affects pole piece
Coating quality, and be coated with completion i.e. indicate production battery pole piece formed, the quality level of pole piece determines at this time
The performance of battery.Therefore, the slurry how quickly prepared is the target that lithium electrical engineering teacher seek assiduously.
Cell size is divided into anode and cathode slurry, and active material, conductive agent, binder, solvent used in two kinds of slurries etc. is with battery
System is different and different.But the preparation of positive and negative electrode slurry all includes mutual between liquid and liquid, liquid and solid material
The series of process processes such as mixing, dissolution, dispersion, and change along with temperature, viscosity, environment etc..Mature slurrying side at present
Formula predominantly uses double planetary mixer wet mixing or dry-mixed slurrying.
Wet mixing slurrying mainly first prepares finely dispersed conducting resinl, then carries out the mixing point of active material and conducting resinl
It dissipates, is eventually adding the adjustment that appropriate solvent carries out viscosity.Generally for feed time is saved, raw material are all concentration additions, and
It concentrates the powder being added to be easy into bulk, increases dispersion difficulty and mixing time.In addition, holding since conductive agent surface area is big
Easy lyosoption causes the mobility of solvent poor, after active material is added, is not easy to reach evenly dispersed state.
And existing dry-mixed slurrying is then first to premix the powdered rubbers such as active material, conductive agent under certain speed
It closes, is subsequently added into binder and is mixed, then be gradually added solvent and mixed, dispersed, be eventually adding a certain amount of solvent
It is diluted adjusting viscosity to required for being coated with.Relative to wet mixing slurrying, the dispersity of dry-mixed slurrying can be more preferable, slurry point
Scattered degree is higher, more advantageous to the quality of pole piece.But the dry-mixed pulping process equally exists following problems: 1) needing higher viscous
It is mediated under degree, so that PVDF/CMC etc. be made to dissolve, the solid content difficulty control of kneading increases technology difficulty；2) material
Optimum state can change, the solid content under optimum state with the variation of the factors such as raw material particle size, pH value, specific surface area
It changes, needs to readjust technique, thus influence whether the consistency between production efficiency and different batches pole piece；3)
In addition, material is in the viscous lower bonding of height, apparatus of load is larger, is easy to cause equipment damage.
In view of this, it is necessory to provide the technical solution to solve the above problems.
Summary of the invention
It is an object of that present invention to provide a kind of battery production pulping devices, to solve existing pulping equipment and pulping process
The problem of slurry can not be made uniformly to mix, disperse, the present invention substantially reduce slurrying in the case where guaranteeing the good dispersity of slurry
Time.
To achieve the goals above, the invention adopts the following technical scheme:
A kind of battery production pulping device, including agitating device and feeding device；The agitating device includes agitator tank
And it is mounted on the dispersion impeller in the agitator tank；The feeding device includes the storage device being sequentially communicated from top to bottom,
One pipeline and second pipe；Wherein, one end of the second pipe is connected to the agitator tank and close to the dispersion impeller, described
The other end of second pipe is connected to dry gas.
The storage device being sequentially communicated from top to bottom, first pipe and second pipe be set in feeding device, powder by
It is fallen into second pipe in gravity from storage device, and one end of second pipe is connected to dry gas, into second pipe
Powder is by drying near the dispersion impeller that gas is continuously sent in the agitator tank being connected to the second pipe other end, and by agitator tank
The solvent slurry of entrance has focused largely near dispersion impeller, it is possible thereby to increase the contact area of powder and solvent slurry, accelerates
It is dissolved.In addition, by the powder that dry air-blowing enters being dispersed into agitator tank, viscosity is small, in addition the revolving speed near dispersion impeller
Height, Reynolds number is higher at this time known to the calculation formula of Reynolds number, then turbulent flow is fiercer, and the mixed effect of slurry is also better,
And for substances such as conductive blacks, partial size is small, large specific surface area, at a low viscosity can be faster and better be uniformly dispersed.
Preferably, the storage device is set as funnel-form.Funnelform feed inlet can slow down the charging rate of powder,
It is more conducive to the dispersion of subsequent powder.
Preferably, the feeding device further includes screw extruder；One end of the screw extruder and the storing fill
Connection is set, the other end of the screw extruder is connected to the first pipe.Screw extruder includes screw rod and motor, by electricity
Machine drive screw rod rotation, by control screw rod rotation speed control powder falling speed, improve subsequent powder into
Enter the dispersion degree of agitator tank.
Preferably, height-adjustable hose is arranged in the first pipe.The mountable middle part in first pipe of hose, on
Portion or lower part, flexible by hose can make feeding device go up and down together with agitating device, adapt to plurality of application scenes,
Convenience is provided for actual production.
Preferably, the first pipe is provided with the first pneumatic operated valve；The input end of the second pipe is provided with the second gas
Dynamic valve, the second pipe are connected to end with the agitator tank and are provided with third pneumatic operated valve.Three gas are arranged in entire feeding device altogether
Dynamic valve, the first pneumatic operated valve enter second pipe for completely cutting off first pipe and second pipe, control powder；Second pneumatic operated valve is used for
The admission velocity for controlling dry gas, the speed of dry gas being blown into is adjusted in conjunction with the property of powder, but need to keep dry gas
Air pressure is greater than or equal to 0.5MPa, to prevent the liquid in agitator tank from flowing backward back in feeding device.
Preferably, desiccant is also set up in the first pipe.Feeding device is the feeding device of powder, takes and keeps at quarter
Drying in feeding device, the long-time service of feeding device are easy to cause humidity in feeding device big, and aggregation is dry compared with juicy
A possibility that setting of agent can to keep drying in pipeline for a long time, reduce powder moisture absorption, and then the viscosity of powder is reduced, it mentions
The dispersibility of high powder.
Preferably, the top of the first pipe is additionally provided with inert gas entrance.Inertia can be passed through in advance before charging
Gas may further ensure that the drying in pipe；It can also be passed through inert gas after charging, prevent a part of powder from remaining in pipe
On wall.
Preferably, agitating paddle and dispersion axis are additionally provided in the agitator tank, the agitating paddle is mounted on the agitator tank
Central axes on, the dispersion axis is mounted on the side of the agitating paddle, and the dispersion impeller is mounted on the bottom of the dispersion axis.
Dispersion axis and dispersion impeller quantity be disposed as it is multiple, multiple dispersion impellers be separately mounted to dispersion axis bottom.It is furthermore preferred that stirring
It mixes paddle and dispersion axis is disposed as two, two dispersion impellers are at least set on every dispersion axis, increase the dynamics dispersed to slurry.
Preferably, the agitating paddle is fixedly connected with the dispersion axis, and turning for dispersion axis is driven while agitating paddle rotates
Dynamic, dispersion impeller is consistent with the revolution speed of agitating paddle, and rotates in same direction, then is positively retained at two into the powder of agitator tank at this time
Near dispersion impeller, dispersion is driven simultaneously by two dispersion impellers, obtains more uniform slurry.
Preferably, one end of the second pipe is connected to the agitator tank and close to the dispersion impeller lower position.It will
Second pipe and agitator tank are connected to the lower position of bottom dispersion impeller, and powder is successively blown out second pipe by dry gas
Reach near dispersion impeller, and revolving speed near dispersion impeller is high, the two by interaction so that the dispersion degree of slurry reaches maximum,
Finally mix more uniform.Certainly, the exit end of second pipe is also mountable below the dispersion impeller of other positions, but by
In gravity, whole effect simultaneously is not so good as to be mounted on more preferable below the dispersion impeller of bottom.
Another object of the present invention is to provide a kind of battery production pulping process, comprising the following steps:
S1, the second pneumatic operated valve and third pneumatic operated valve are successively opened, input dry gas in agitating device by second pipe,
And open the first pneumatic operated valve；
S2, stirring and dispersion operating to be opened, while powder is added into feeding device, wherein mixing speed is 15~
40rpm, rate of dispersion are 500~2500rpm, and powder passes through dry gas and continuously inputs near the dispersion impeller of agitating device；
After S3, charging, third pneumatic operated valve is closed, is vacuumized, continued stirring to powder and dissolve, it is pneumatic to open third
Valve repeats S2 step and sequentially adds subsequent powder；
S4, after the completion of all feeding, the first pneumatic operated valve, third pneumatic operated valve and the second pneumatic operated valve is successively closed, drying is cut off
Gas, uniformly rear closing agitating device to be mixed, completes the preparation of slurry.
Preferably, the air pressure of the dry gas is greater than or equal to 0.5MPa.Since the pipeline domestic demand moment keeps drying, in order to
It prevents the liquid during feeding in agitator tank from flowing backward back in feeding device, influences the globality of subsequent charging and slurry
Can, the air pressure for the drying gas being passed through need to be remained above or be equal to 0.5MPa.
Preferably, it is described vacuumize after stirring pressure inside the tank be less than or equal to -80KPa.Agitator tank can be reduced by vacuumizing
Interior air drag and the pollution level to slurry, it is available at high speed to mix more uniform slurry.
Preferably, the mixing speed is 20~35rpm；The rate of dispersion is 600~2000rpm.According to addition powder
The characteristic of material is different, adjusts stirring and rate of dispersion.Mixing speed can be divided into low speed and high speed, and low speed then maintains 20~
30rpm, it is higher or more relatively low also harmless again that high speed then maintains 25~35rpm or mixing speed.And rate of dispersion can be with
It is converted according to the diameter difference of dispersion impeller by linear velocity equal proportion.It is 200mm that the above rate of dispersion of the invention, which is by diameter,
Dispersion impeller it is given.
The beneficial effects of the present invention are:
1) present invention provides a kind of battery production pulping device, including agitating device and feeding device；The stirring dress
It sets including agitator tank and the dispersion impeller being mounted in the agitator tank；The feeding device includes being sequentially communicated from top to bottom
Storage device, first pipe and second pipe；Wherein, one end of the second pipe is connected to the agitator tank and close to described
Dispersion impeller, the other end of the second pipe are connected to dry gas.Compared with the prior art, the present invention is using dry gas as powder
Material enters the driving device of agitator tank, powder is continuously directly blown near dispersion impeller, while the height of dispersion impeller in addition
Revolving speed effect, disperses slurry more uniform, while the slurry of output is also preferably guaranteed.And feeding device
It works at the same time with agitating device, is also being stirred while charging, the stirring whole operating time can so be greatly saved,
Improve production efficiency.
2) present invention can quickly promote the dispersion that partial size is small, specific surface area is high, is difficult to dispersed substance, be primarily due to
The present apparatus is fed near the higher dispersion impeller of revolving speed using continuous dispersion, and the frit viscosity that this mode is fed is small, powder
Drive flow velocity big by high-revolving dispersion impeller, so that Reynolds number is higher, turbulent flow is fiercer, and whole mixed effect is more preferable.
3) feeding tube with dispersion impeller of the present apparatus are close, and powder can be reached directly near dispersion impeller, and solvent is also big
It focuses mostly near dispersion impeller, increases the contact area of powder and solvent, be conducive to polymer substance dissolution, while being also to stir
Mix whole saved the operating time.
4) present invention can be carried out continuously compared under low viscosity, and shearing force is opposite to be reduced, and alleviate the load of pulping device,
Be conducive to the long-time service of device.
Detailed description of the invention
Fig. 1 is overall structure diagram of the invention.
In figure: 1- feeding device；11- storage device；12- first pipe；The first pneumatic operated valve of 121-；122- hose；13-
Two pipelines；The second pneumatic operated valve of 131-；132- third pneumatic operated valve；14- screw extruder；141- motor；142- screw rod；2- stirring dress
It sets；21- agitator tank；22- dispersion impeller；23- agitating paddle；24- disperses axis.
Specific embodiment
It is attached below in conjunction with specific embodiment and specification to keep technical solution of the present invention and advantage clearer
Figure is described in further detail the present invention and its advantages, and embodiments of the present invention are not limited thereto.
As shown in Figure 1, a kind of battery production pulping device provided in this embodiment, including agitating device 2 and charging dress
Set 1；Agitating device 1 includes agitator tank 21 and the dispersion impeller 22 being mounted in agitator tank 21；Feeding device 1 includes from top to bottom
Storage device 11, first pipe 12 and the second pipe 13 being sequentially communicated；Wherein, one end of second pipe 13 and agitator tank 21 connect
Logical and close dispersion impeller 22, the other end of second pipe 13 are connected to dry gas.Agitating paddle 23 is also set up in agitator tank 21 and is divided
Dissipate axis 24, wherein agitating paddle 23 and dispersion axis 24 set at least to two, disperse on every dispersion axis 24 at least provided with two
Disk 22, the setting of dispersion impeller 22 is in dispersion 24 bottom of axis.Second pipe 13 is passed through one end in agitator tank 21 preferentially close to dispersion axis
The dispersion impeller 22 of 24 bottommosts setting, one end of certain second pipe 13 can also be distributed near other dispersion impellers 22, but due to
The lower section of bottommost dispersion impeller 22 is arranged in the effect of object gravity, into agitator tank 21 powder directly by high-revolving point
It dissipates disk 22 to drive, then mixed effect is more preferable.
Wherein, storage device 11 is set as funnel-form, may be alternatively provided as other column structures, but funnelform feed inlet can
To slow down the charging rate of powder, it is more conducive to the dispersion of subsequent powder.First pipe 12 is placed vertically, and second pipe 13 is horizontal
To placement, so that dry gas laterally blows powder.The first pneumatic operated valve 121 is arranged in first pipe 12, for completely cutting off first pipe
12 and second pipe 13, control powder enters second pipe 13.The input end of second pipe 13 is provided with the second pneumatic operated valve 131,
For controlling the admission velocity of dry gas, the speed of dry gas being blown into is adjusted in conjunction with the property of powder, but drying need to be kept
The air pressure of gas is greater than or equal to 0.5MPa, to prevent the liquid in agitator tank 21 from flowing backward back in feeding device 1.Second pipe 13 with
Agitator tank 21 is connected to end and is provided with third pneumatic operated valve 132, for completely cutting off agitating device 2 and feeding device 1, in subsequent pulping process
In for reduce whipping process in air drag influence, need at this time close third pneumatic operated valve 132 agitator tank 21 is vacuumized,
And guarantees to vacuumize pressure in rear agitator tank 21 and be less than or equal to -80KPa.
In an embodiment of battery production pulping device according to the present invention, feeding device 1 further includes Screw Extrusion
Machine 14；14 one end of screw extruder are connected to storage device 11, the other end of screw extruder 14 and the first pipe 12
Connection.Screw extruder 14 includes screw rod 142 and motor 141, and screw rod 142 is laterally disposed and drives screw rod 142 to revolve by motor 141
Turn, the rotation speed by controlling screw rod 142 controls the falling speed of powder, improves subsequent powder and enters agitator tank 21
Dispersion degree.
In an embodiment of battery production pulping device according to the present invention, first pipe 12 is arranged height-adjustable
Hose 122.The mountable middle part, top or lower part in first pipe 12 of hose 122, flexible by hose 122 can be with
So that feeding device 1 is gone up and down together with agitating device 2, plurality of application scenes is adapted to, provides convenience for actual production.
In an embodiment of battery production pulping device according to the present invention, drying is also set up in first pipe 12
Agent.Due to the feeding device that feeding device 1 is powdered slurry, the drying carved and kept in feeding device 1, feeding device 1 are taken
Long-time service be easy to cause humidity in feeding device 1 big, assemble compared with juicy, the setting of desiccant can make in pipeline long
A possibility that phase keeps drying, reduces powder moisture absorption, and then the viscosity of powder is reduced, improve the dispersibility of powder.
In an embodiment of battery production pulping device according to the present invention, the top of first pipe 12 is additionally provided with
Inert gas entrance.Inert gas can be passed through in advance before charging, may further ensure that the drying in pipe；Also may be used after charging
It is passed through inert gas, prevents a part of powder from remaining on tube wall.But inert gas air pressure can not be excessive, need to be lower than dry gas
Air pressure prevents two gas phases from meeting and resists, powder effectively cannot be blown into agitator tank 21, be separately likely to result in 21 internal solvent of agitator tank
It flows backwards, inert gas, which is passed through small a moment, to close.
In addition, also providing a kind of using above-mentioned pulping device progress battery pulping process, comprising the following steps:
S1, the second pneumatic operated valve 131 and third pneumatic operated valve 132 are successively opened, stirs dry gas by the input of second pipe 13
It mixes in device 2, and opens the first pneumatic operated valve 121；
S2, stirring and dispersion operating to be opened, while powder is added into feeding device 1, wherein mixing speed is 15~
40rpm, rate of dispersion are 500~2500rpm, and powder passes through dry gas and continuously inputs near the dispersion impeller 22 of agitating device 2；
After S3, charging, third pneumatic operated valve 132 is closed, is vacuumized, continued stirring to powder and dissolve, open third gas
Dynamic valve 132 repeats S2 step and sequentially adds subsequent powder；
S4, after the completion of all feeding, the first pneumatic operated valve 121, third pneumatic operated valve 132 and the second pneumatic operated valve 131 are successively closed,
Dry gas is cut off, uniformly rear closing agitating device 2 to be mixed completes the preparation of slurry.
Wherein, the air pressure of dry gas need to be greater than or equal to 0.5MPa, to prevent liquid from flowing backward back in feeding device 1, influence
The overall performance of subsequent charging and slurry.It vacuumizes pressure in rear agitator tank 21 and is less than or equal to -80KPa.Meanwhile according to
The characteristic that powder is added is different, adjusts stirring and rate of dispersion.Mixing speed can be divided into low speed and high speed, and low speed then maintains 20
~30rpm, it is higher or more relatively low also harmless again that high speed then maintains 25~35rpm or mixing speed, but control is also needed to exist
15~40rpm, in case revolving speed is too small can not to stir evenly or the excessive facility load of revolving speed is big.And rate of dispersion can according to point
The diameter difference for dissipating disk 22 converts by linear velocity equal proportion, can also be divided into low speed and high speed, wherein low speed for 500~
1200rpm is at a high speed 1200~2500rpm.The above rate of dispersion of the invention be by the dispersion impeller 22 that diameter is 200mm to
Fixed, rate of dispersion maintains 600~2000rpm and is preferred.
It is exemplified below the specific embodiment of two kinds of battery plus-negative plate slurry preparation methods, but not as to limit of the invention
It is fixed.
Embodiment 1
The present embodiment prepares a kind of by cobalt acid lithium, conductive black, carbon nanotube conducting slurry, PVDF, NMP structure by a certain percentage
At anode sizing agent, it is specific the preparation method comprises the following steps:
NMP is added into agitator tank 21 by S1, opens stirring and dispersion low-speed running, wherein mixing speed 20rpm, point
Dissipating speed is 800pm, and PVDF powder is added from feeder of powder 1.After the completion of charging, the gas that is evacuated in agitator tank 21
Pressure is -80KPa, continues stirring and is completely dissolved to PVDF；
S2, opens stirring and dispersion runs at high speed, wherein mixing speed 30rpm, rate of dispersion 1600rpm, from powder
Conductive black is added in last feeding device 1, the air pressure being evacuated in agitator tank 21 after the completion of charging is -80KPa, mixing time
For 0.5H；
Carbon nanotube conducting slurry is added into agitator tank 21 by S3, and the air pressure being evacuated in agitator tank 21 is -80KPa, high
Speed stirring 0.5H, wherein mixing speed is 35rpm, rate of dispersion 1800rpm；
S4, opens stirring and dispersion runs at high speed, wherein mixing speed 30rpm, rate of dispersion 1600rpm, from powder
Cobalt acid lithium is added in last feeding device 1, the air pressure being evacuated in agitator tank 21 after the completion of charging is -80KPa, and mixing time is
2H.The preparation of anode sizing agent is completed after mixing evenly.
Embodiment 2
The present embodiment prepares a kind of negative electrode slurry being made of by a certain percentage graphite, conductive black, SBR, CMC, specifically
The preparation method comprises the following steps:
S1, is added deionized water into agitator tank 21, opens stirring and dispersion low-speed running, wherein mixing speed is
CMC powder is added in 20rpm, rate of dispersion 800pm from feeder of powder 1.After the completion of charging, it is evacuated to agitator tank
Air pressure in 21 is -80KPa, continues stirring and is completely dissolved to CMC；
S2, opens stirring and dispersion runs at high speed, wherein mixing speed 30rpm, rate of dispersion 1600rpm, from powder
Conductive black is added in last feeding device 1, the air pressure being evacuated in agitator tank 21 after the completion of charging is -80KPa, mixing time
For 0.5H；
S3, opens stirring and dispersion runs at high speed, wherein mixing speed 35rpm, rate of dispersion 2000rpm, from powder
Graphite is added in last feeding device 1, the air pressure being evacuated in agitator tank 21 after the completion of charging is -80KPa, and mixing time is
2.0H；
S4 opens stirring and dispersion low-speed running, wherein mixing speed 23rpm, rate of dispersion 1000rpm, to stirring
Addition SBR glue in tank 21 is mixed, the air pressure being evacuated in agitator tank 21 after the completion of charging is -80KPa, and mixing time is
0.5H completes the preparation of negative electrode slurry after mixing evenly.
Compared with the prior art, the present invention joins it into pulping device of the invention according to different material characteristics
In, then mixing speed and rate of dispersion are adjusted, so that slurry reaches evenly dispersed effect under the mixing of the present apparatus.
And present apparatus clever structure, it cooperates between each separating device, it is attached to dispersion impeller continuously to blow powder in particular with dry gas
Closely in conjunction with the high revolving speed of dispersion impeller, the good dispersity of slurry was both guaranteed, friction feeding and stirring also substantially reduce system
Time, high production efficiency are starched, while also ensuring the stability of slurry between different batches.
According to the disclosure and teachings of the above specification, those skilled in the art in the invention can also be to above-mentioned embodiment party
Formula is changed and is modified.Therefore, the invention is not limited to above-mentioned specific embodiment, all those skilled in the art exist
Made any conspicuous improvement, replacement or modification all belong to the scope of protection of the present invention on the basis of the present invention.This
Outside, although using some specific terms in this specification, these terms are merely for convenience of description, not to the present invention
Constitute any restrictions.
Claims (10)
1. a kind of battery production pulping device, which is characterized in that including agitating device and feeding device；The agitating device packet
The dispersion impeller for including agitator tank and being mounted in the agitator tank；The feeding device includes the storing being sequentially communicated from top to bottom
Device, first pipe and second pipe；Wherein, one end of the second pipe is connected to the agitator tank and close to the dispersion
Disk, the other end of the second pipe are connected to dry gas.
2. battery production pulping device according to claim 1, which is characterized in that the feeding device further includes screw rod
Extruder；One end of the screw extruder is connected to the storage device, the other end of the screw extruder and described the
The connection of one pipeline.
3. battery production pulping device according to claim 1, which is characterized in that the first pipe is provided with height
Adjustable hose.
4. battery production pulping device according to claim 1, which is characterized in that the first pipe is provided with first
Pneumatic operated valve；The input end of the second pipe is provided with the second pneumatic operated valve, and the second pipe is connected to end with the agitator tank and sets
It is equipped with third pneumatic operated valve.
5. battery production pulping device according to claim 1, which is characterized in that be additionally provided with and stir in the agitator tank
Paddle and dispersion axis are mixed, the agitating paddle is mounted on the central axes of the agitator tank, and the dispersion axis is mounted on the agitating paddle
Side, the dispersion impeller be mounted on it is described dispersion axis bottom.
6. battery production pulping device according to claim 1, which is characterized in that one end of the second pipe and institute
State agitator tank connection and close to the dispersion impeller lower position.
7. a kind of battery production pulping process, which comprises the following steps:
S1, the second pneumatic operated valve and third pneumatic operated valve are successively opened, inputs dry gas in agitating device by second pipe, and beat
Open the first pneumatic operated valve；
S2, stirring and dispersion operating to be opened, while powder is added into feeding device, wherein mixing speed is 15~40rpm,
Rate of dispersion is 500~2500rpm, and powder passes through dry gas and continuously inputs near the dispersion impeller of agitating device；
After S3, charging, third pneumatic operated valve is closed, is vacuumized, continued stirring to powder and dissolve, open third pneumatic operated valve, weight
Multiple S2 step sequentially adds subsequent powder；
S4, after the completion of all feeding, the first pneumatic operated valve, third pneumatic operated valve and the second pneumatic operated valve is successively closed, dry gas is cut off, to
Agitating device is closed after mixing evenly, completes the preparation of slurry.
8. battery production pulping process according to claim 7, which is characterized in that in step S1, the dry gas
Air pressure is greater than or equal to 0.5MPa.
9. battery production pulping process according to claim 7, which is characterized in that in step S3, stirred after vacuumizing
Pressure inside the tank is less than or equal to -80KPa.
10. battery production pulping process according to claim 7, which is characterized in that in step S2, the mixing speed
For 20~35rpm；The rate of dispersion is 600~2000rpm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910771729.1A CN110508179A (en) | 2019-08-21 | 2019-08-21 | A kind of battery production pulping device and pulping process |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910771729.1A CN110508179A (en) | 2019-08-21 | 2019-08-21 | A kind of battery production pulping device and pulping process |
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| Publication Number | Publication Date |
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| CN110508179A true CN110508179A (en) | 2019-11-29 |
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| CN201910771729.1A Pending CN110508179A (en) | 2019-08-21 | 2019-08-21 | A kind of battery production pulping device and pulping process |
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Application publication date: 20191129 |