CN115041050B - Method for manufacturing lithium plasma - Google Patents
Method for manufacturing lithium plasma Download PDFInfo
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- CN115041050B CN115041050B CN202210731377.9A CN202210731377A CN115041050B CN 115041050 B CN115041050 B CN 115041050B CN 202210731377 A CN202210731377 A CN 202210731377A CN 115041050 B CN115041050 B CN 115041050B
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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
- B01F27/80—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
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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
- B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
- B01F23/50—Mixing liquids with solids
- B01F23/53—Mixing liquids with solids using driven stirrers
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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
- B01F27/50—Pipe mixers, i.e. mixers wherein the materials to be mixed flow continuously through pipes, e.g. column mixers
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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
- B01F27/55—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers driven by the moving material
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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
- B01F33/00—Other mixers; Mixing plants; Combinations of mixers
- B01F33/80—Mixing plants; Combinations of mixers
- B01F33/82—Combinations of dissimilar mixers
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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
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/20—Measuring; Control or regulation
- B01F35/21—Measuring
- B01F35/2132—Concentration, pH, pOH, p(ION) or oxygen-demand
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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
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/80—Forming a predetermined ratio of the substances to be mixed
- B01F35/82—Forming a predetermined ratio of the substances to be mixed by adding a material to be mixed to a mixture in response to a detected feature, e.g. density, radioactivity, consumed power or colour
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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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- Dispersion Chemistry (AREA)
- Battery Electrode And Active Subsutance (AREA)
Abstract
The invention relates to the technical field of battery production, and provides a lithium plasma preparation method, which comprises the steps of primarily mixing powder material and liquid material to form primary mixed slurry; and (3) carrying out cyclic reciprocating conveying on the primary mixed slurry between the first container and the second container, and stirring and dispersing the primary mixed slurry in each conveying process to form finished slurry. When the lithium plasma slurry manufacturing method provided by the invention is used for manufacturing slurry, stirring and dispersing of all primary mixed slurry can be realized, the probability of stirring and dispersing the bulk materials is improved, the dispersing efficiency of the bulk materials is improved, the time required for pulping is reduced, and the pulping efficiency is improved.
Description
Technical Field
The invention relates to the technical field of battery production, in particular to a method for manufacturing lithium plasma.
Background
In the production process of lithium batteries, various materials such as raw material powder, solvent, colloid and the like are required to be uniformly mixed so as to achieve proper parameters such as proportion, viscosity and the like.
In the prior art, a plurality of raw materials are mainly placed into a pulping tank, and are uniformly stirred by a stirring mechanism in the pulping tank. When the raw material powder is contacted with the solvent, the raw material powder is easy to agglomerate. The agglomerated materials can be dispersed by using a high-speed dispersing disc rotating at a high speed in a stirring tank. However, since the range of the turbulent flow area formed by the high-speed dispersion plate is small, the powder blocks positioned outside the range of the turbulent flow area need to move into the range of the turbulent flow area to be dispersed. For a pulping tank with larger solvent, the probability of shearing or impacting the powder blocks is smaller, the dispersion efficiency of the powder blocks is low, the pulping time is long, and the pulping efficiency is low.
Therefore, how to solve the problem of low pulping efficiency in the prior art is an important technical problem to be solved by the person skilled in the art.
Disclosure of Invention
The invention provides a method for manufacturing lithium plasma, which is used for solving the defect of low pulping efficiency in the prior art.
The invention provides a method for manufacturing lithium plasma, which comprises the following steps:
primary mixing the powder material and the liquid material to form primary mixed slurry;
and (3) carrying out circulating and reciprocating conveying on the primary mixed slurry between the first container and the second container, and stirring and dispersing the primary mixed slurry in each conveying process to form finished slurry.
According to the method for manufacturing lithium plasma provided by the invention, the powder material and the liquid material are mixed in a preliminary way to form a preliminary mixed slurry, and the method comprises the following steps:
adding the powder and the liquid to the interior of the same one of the first and second containers;
stirring the powder material and the liquid material to mix the powder material and the liquid material preliminarily.
According to the method for manufacturing lithium plasma provided by the invention, the powder material and the liquid material are mixed in a preliminary way to form a preliminary mixed slurry, and the method comprises the following steps:
adding the liquid charge to the interior of one of the first vessel and the second vessel;
adding the powder to the interior of the other of the first container and the second container;
the material in one of the first container and the second container is transferred into the other.
According to the method for manufacturing lithium plasma provided by the invention, the powder material and the liquid material are mixed in a preliminary way to form a preliminary mixed slurry, and the method comprises the following steps:
adding the liquid material to the interiors of the first container and the second container respectively;
agitating the liquid material in the first container and the liquid material in the second container to clean the inner walls of the first container and the second container and concentrate the liquid material into the first container;
the powder material is added into the first container or the powder material is added into the second container, and the material in one container and the material in the second container are conveyed into the other container.
According to the lithium plasma preparation method provided by the invention, the cyclic reciprocating conveying of the primary mixed slurry between the first container and the second container is realized by means of a bidirectional homogenizing device;
before the liquid material is concentrated into the first container, the method further comprises:
and the liquid material is circularly and reciprocally conveyed between the first container and the second container by the bidirectional homogenizing device so as to clean the inside of the bidirectional homogenizing device.
According to the lithium plasma manufacturing method provided by the invention, the powder material comprises a first powder material and a second powder material, wherein the first powder material comprises a binder, and the second powder material comprises an active substance and a conductive agent;
the primary mixing of the powder material and the liquid material to form primary mixed slurry comprises the following steps:
mixing the first powder material and the liquid material to form glue solution;
and mixing the second powder material with the glue solution to form the primary mixed slurry.
According to the method for manufacturing the lithium plasma provided by the invention, the first powder material and the liquid material are mixed to form the glue solution, and the method comprises the following steps:
the first powder and the liquid are both added to the interior of one of the first container and the second container.
According to the method for manufacturing the lithium plasma provided by the invention, the first powder material and the liquid material are mixed to form the glue solution, and the method comprises the following steps:
adding the liquid charge to the interior of one of the first vessel and the second vessel;
adding the first powder to the interior of the other of the first container and the second container;
the material in one of the first container and the second container is transferred into the other.
According to the method for manufacturing the lithium plasma, after the finished slurry is formed, the method further comprises the following steps:
and conveying the finished slurry into a third container so as to store the finished slurry.
According to the method for manufacturing lithium plasma provided by the invention, before the finished product slurry is conveyed into the third container, the method further comprises the following steps:
detecting the content of various components in the finished slurry;
determining the proportion of each component in the finished slurry according to the content of each component in the finished slurry;
delivering the finished slurry into the third vessel when it is determined that the proportions of the various components in the finished slurry are within a target range;
and reprocessing the finished slurry when the proportion of at least one component in the finished slurry is determined to be outside the target range.
According to the method for manufacturing the lithium plasma, the reprocessing of the finished slurry comprises the following steps:
determining a defect component in the finished slurry and a defect amount of the defect component, wherein the defect component is a component of which the proportion in the finished slurry is lower than a target range;
adding the defect component in accordance with the defect amount to an interior of one of the first container and the second container;
mixing the defect ingredient and the finished slurry to form a mixed slurry;
and (3) carrying out circulating and reciprocating conveying on the mixed slurry between the first container and the second container, and stirring and dispersing the mixed slurry in each conveying process to form secondary finished slurry.
In the method for manufacturing the lithium plasma, the powder material and the liquid material are initially mixed to form the primary mixed slurry. And then, the primary mixed slurry is circularly and reciprocally conveyed between the first container and the second container, and stirring and dispersing operations are carried out on the primary mixed slurry in each conveying process, so that caking materials in the primary mixed slurry are dispersed, the dissolution of powder materials is promoted, and the primary mixed slurry is further uniformly mixed, so that the finished product slurry is formed. When the lithium plasma slurry manufacturing method provided by the invention is used for manufacturing slurry, stirring and dispersing of all primary mixed slurry can be realized, the probability of stirring and dispersing the bulk materials is improved, the dispersing efficiency of the bulk materials is improved, the time required for pulping is reduced, and the pulping efficiency is improved.
Drawings
In order to more clearly illustrate the invention or the technical solutions of the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the invention, and other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a flow chart of a method for manufacturing a lithium plasma according to the present invention;
fig. 2 is a schematic structural view of a pulping apparatus capable of being applied to a lithium plasma manufacturing method according to the present invention;
fig. 3 is a schematic structural diagram of a bidirectional homogenizing apparatus provided by the present invention.
Reference numerals:
1: a first container; 2: a second container; 3: a bidirectional homogenizing device; 4: a housing; 5: a rotating body; 6: a first conveying path; 7: a second conveying path; 8: a first dispersion plate; 9: a second dispersion disk; 10: a third container; 11: and a transfer pump.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The method for manufacturing the lithium plasma according to the present invention is described below with reference to fig. 1 to 3.
As shown in fig. 1, the method for manufacturing a lithium plasma according to the embodiment of the invention includes the following steps:
step 110, mixing the powder material and the liquid material for the first time to form primary mixed slurry.
Firstly, the powder material and the liquid material are primarily mixed.
Specifically, the powder material and the liquid material can be added into the same container in sequence, and the powder material and the liquid material in the container are stirred by using a stirring device or a stirring mechanism in the container, so that the powder material and the liquid material are primarily mixed.
Alternatively, the powder material and the liquid material may be respectively added to different containers, and a bidirectional homogenizing apparatus 3 may be provided between the two containers, and the material in one of the containers may be transported to the other container by the bidirectional homogenizing apparatus 3.
For example, the powder material is added into the first container 1, the liquid material is added into the second container 2, and the powder material and the liquid material are respectively stirred by using a stirring device or by using a stirring mechanism in the first container 1 and the second container 2, so that the powder material and the liquid material are uniformly mixed, and the liquid material is uniformly mixed.
Then the liquid material in the second container 2 is conveyed into the first container 1 by the bidirectional homogenizing device 3, so that the liquid material gradually enters the first container 1 and is gradually mixed with the powder material in the first container 1. When the liquid material in the second container 2 is conveyed into the first container 1, the powder material and the liquid material in the first container 1 can be stirred by a stirring device or a stirring mechanism in the first container 1, so that the liquid material and the powder material are gradually mixed, and the probability of agglomeration of the powder material can be reduced.
The powder material in the first container 1 may be transferred into the second container 2 by the bidirectional homogenizing apparatus 3, so that the powder material gradually enters the second container 2 and is gradually mixed with the liquid material in the second container 2. Similarly, when the powder material in the first container 1 is conveyed into the second container 2, the powder material and the liquid material in the second container 2 can be stirred by using a stirring device or a stirring mechanism in the second container 2, so that the liquid material and the powder material are gradually mixed, and the probability of agglomeration of the powder material is reduced.
Step 120, the primary mixed slurry is circularly and reciprocally conveyed between the first container and the second container, and stirring and dispersing operations are performed on the primary mixed slurry in each conveying process, so as to form a finished slurry.
The primary mixed slurry is conveyed between the first container 1 and the second container 2 by the bidirectional homogenizing device, and is stirred and dispersed in the conveying process, so that the stirring and dispersing of all the slurry can be ensured. The repeated and reciprocating transportation of the primary mixed slurry between the first container 1 and the second container 2 is combined, the probability of stirring and dispersing the agglomerated materials is improved, the agglomerated materials in the primary mixed slurry are fully and rapidly dispersed, the dissolution of the powder materials is promoted, and the primary mixed slurry is further uniformly mixed, so that the finished slurry is formed.
When the lithium plasma slurry manufacturing method provided by the invention is used for manufacturing slurry, stirring and dispersing of all primary mixed slurry can be realized, the probability of stirring and dispersing the bulk materials is improved, the dispersing efficiency of the bulk materials is improved, the time required for pulping is reduced, and the pulping efficiency is improved.
In this embodiment, the above-mentioned process of circulating and reciprocally conveying the primary slurry between the first container 1 and the second container 2 is completed by means of the same bidirectional homogenizing device.
The bidirectional homogenizing apparatus 3 includes a housing 4, a rotor 5, and a dispersion disk assembly, and referring to fig. 3, the housing 4 has a housing chamber, and a first conveying passage 6 and a second conveying passage 7 are provided at both ends of the housing chamber in communication with each other. The rotor 5 sets up in holding the cavity, is provided with the blade on the rotor 5, and when the rotor 5 forward rotated, can make the material carry to second conveying channel 7 from first conveying channel 6, and when the rotor 5 reverse rotation, can make the material carry to first conveying channel 6 from second conveying channel 7, namely, switch the direction of rotation of rotor 5, can switch the direction of transport to the material.
The first conveying path 6 and the second conveying path 7 are connected to the first container 1 and the second container 2, respectively, and as shown in fig. 2, by controlling the rotation direction of the rotator 5, the material can be circularly and reciprocally conveyed between the first container 1 and the second container 2.
The dispersion disc assembly comprises a first dispersion disc 8 and a second dispersion disc 9, wherein the first dispersion disc 8 and the second dispersion disc 9 are of annular structures, and are annularly arranged outside the rotating body 5. The outer edge of the first dispersion disk 8 is fixedly connected with the shell 4, and the inner edge is in clearance fit with the rotating body 5. The inner edge of the second dispersion disk 9 is fixedly connected with the rotating body 5, and the outer edge is in clearance fit with the shell 4. A first through groove is provided at the inner edge of the first dispersion plate 8, and a second through groove is provided at the outer edge of the second dispersion plate 9. In the operational state of the bi-directional homogenizing apparatus 3, the first dispersion disk 8 and the second dispersion disk 9 are rotated relative to each other.
When the primary slurry passes through the bidirectional homogenizing device 3, and the primary slurry flows to the dispersion disc assembly, the primary slurry alternately passes through the second through grooves of the second dispersion disc 9 and the first through grooves of the first dispersion disc 8, and can be dispersed into caking materials through alternate disturbance of the first dispersion disc 8 and the second dispersion disc 9, impact between materials and the first dispersion disc 8 and impact between the materials and the second dispersion disc 9.
In the method for manufacturing a lithium plasma in this embodiment, after forming a finished slurry, the method further includes:
step 140, conveying the finished slurry into a third container to store the finished slurry.
The primary mixed slurry is free of caking materials, the powder materials are fully dissolved and uniformly mixed, and then the finished slurry is obtained.
The finished pulp is concentrated into the first container 1 or the second container 2, the finished pulp is transferred into the third container 10 by the transfer pump 11, and the finished pulp is stored in the third container 10 to be pulped again by the first container 1 and the second container 2.
A stirring mechanism may be disposed in the third container 10 to continuously stir the finished slurry in the third container 10, so as to avoid problems of precipitation, delamination and the like of the finished slurry.
After the finished slurry is fed into the third container 10, there is inevitably a residue of the slurry on the inner walls of the first container 1 and the second container 2.
In order to avoid the increase of slurry residues in the first container 1 and the second container 2, in the embodiment of the present invention, when powder materials and liquid materials are primarily mixed to form primary mixed slurry, the liquid materials are added into the first container 1 and the second container 2, the inner walls of the first container 1 and the second container 2 are cleaned by using the liquid materials, and then the powder materials are added.
Specifically, the liquid material required for the current slurry production can be divided into two parts and added to the first container 1 and the second container 2, respectively.
The liquid material required for the current slurry preparation may be completely added into the first container 1, and then part of the liquid material in the first container 1 is conveyed into the second container 2 by the bidirectional homogenizing device 3, so that the liquid material is simultaneously contained in the first container 1 and the second container 2.
The inner walls of the first container 1 and the second container 2 can be cleaned by stirring the liquid material in the first container 1 and the liquid material in the second container 2 by a stirring device or by stirring mechanisms in the first container 1 and the second container 2, respectively, and by the impact of the liquid material in the first container 1 on the inner wall of the first container 1 and the impact of the liquid material in the second container 2 on the inner wall of the second container 2.
In an alternative embodiment, the bidirectional homogenizing apparatus 3 may be further used to circulate and convey the liquid material between the first container 1 and the second container 2 a plurality of times, and the inside of the bidirectional homogenizing apparatus 3 may be cleaned by the liquid material.
After the cleaning is completed, the liquid material is concentrated into the first container 1, and then the powder material is added to mix the powder material with the liquid material.
Specifically, the powder may be directly added into the first container 1, or may be added into the second container 2, and the powder in the second container 2 is gradually conveyed into the first container 1 by the bidirectional homogenizing device 3, or the liquid in the first container 1 is gradually conveyed into the second container 2, so that the powder and the liquid are gradually mixed and dissolved.
In the case of lithium plasma fabrication, the powder used includes a binder, an active material, and a conductive agent, and in an alternative embodiment, the powder may be divided into two parts, one part being the binder, referred to as a first powder, and the other part being the active material and the conductive agent, referred to as a second powder.
When the powder material and the liquid material are mixed in a preliminary way to form the primary mixed slurry, the first powder material and the liquid material can be mixed to form a glue solution, and then the second powder material and the glue solution are mixed to form the primary mixed slurry.
When the first powder material and the liquid material are mixed, the first powder material and the liquid material can be added into the same container in sequence. Specifically, the liquid material may be added to the first container 1 first, and then the first powder material may be directly added to the first container 1, so that the first powder material and the liquid material are directly mixed.
It is also possible to add a liquid charge to one of the containers, then add a first powder charge to the other container, and then transfer the charge from one of the containers to the other container. Specifically, the liquid material may be added into the first container 1, the first powder material may be added into the second container 2, and then the liquid material in the first container 1 may be gradually conveyed into the second container 2 by the bidirectional homogenizing device 3, so that the first powder material and the liquid material are gradually mixed and dissolved.
After the finished slurry is formed, the slurry proportioning parameters of the finished slurry also need to be detected. The slurry proportioning parameters of the finished slurry comprise the proportion of various components in the finished slurry.
Therefore, the method for manufacturing lithium plasma in this embodiment further includes the following steps after forming the final slurry and before transferring the final slurry to the third container 10:
and 131, detecting the content of various components in the finished slurry.
And detecting the contents of various components of the finished slurry by using a battery slurry content measuring instrument in the prior art.
And 132, determining the proportion of each component in the finished slurry according to the content of each component in the finished slurry.
According to the detected content of each component in the finished slurry, the proportion of each component can be determined through calculation.
Step 133, when the proportion of each component in the finished slurry is determined to be within the target range, conveying the finished slurry into a third container;
and reprocessing the finished slurry when the proportion of at least one component in the finished slurry is determined to be outside the target range.
Comparing the calculated proportion of each component with the target range of the corresponding component to determine whether the finished slurry is qualified.
If the proportions of the various components in the finished slurry are within the target range, indicating that the finished slurry is a qualified slurry, the finished slurry may be transferred to the third vessel 10.
If the proportion of at least one component in the finished slurry is out of the target range, the finished slurry is failed, and the finished slurry is required to be reprocessed as a defective slurry, and is conveyed into the third container 10 after being qualified.
When comparing the calculated ratios of the respective components with the target ranges of the respective components, the components of the finished slurry having the ratios lower than the target ranges are referred to as defective components, and the defective amount of the defective components can be determined by calculation.
After determining the defect components and the defect amounts of the defect components, adding the defect components in accordance with the defect amounts into one of the containers; the defective component is then mixed with the reject finished slurry to form a mixed slurry.
Specifically, the reject finished slurry may be concentrated into the first container 1, and the defective component may be directly added into the first container 1 to be mixed with the reject finished slurry. The defective finished pulp may be collected in the first container 1, and then the defective component may be added to the second container 2, and the defective finished pulp in the first container 1 may be transferred to the second container 2 by the bidirectional homogenizer 3, so that the defective component and the defective finished pulp may be mixed and dissolved.
The mixed slurry is then cyclically and reciprocally conveyed between the first container 1 and the second container 2 by the bidirectional homogenizing apparatus 3, and the mixed slurry is subjected to stirring and dispersing operations during each conveyance to form a secondary product slurry.
By detecting the contents of various components in the secondary slurry, the secondary slurry can be transferred to the third container 10 after the secondary slurry is detected to be qualified.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (9)
1. A method for manufacturing a lithium plasma, comprising:
primary mixing the powder material and the liquid material to form primary mixed slurry;
the primary mixed slurry is circularly and reciprocally conveyed between a first container and a second container by utilizing a bidirectional homogenizing device, and the primary mixed slurry is stirred and dispersed in each conveying process to form finished slurry;
the primary mixing of the powder material and the liquid material to form primary mixed slurry comprises the following steps:
adding the liquid feed to the second vessel;
adding the powder into the first container, wherein a stirring mechanism is arranged in the first container;
delivering the liquid material into the first container by the bidirectional homogenizing apparatus, and stirring the powder material and the liquid material in the first container by the stirring mechanism in the first container when the liquid material is delivered into the first container;
the bidirectional homogenizing device comprises a shell and a rotating body, wherein a first conveying channel and a second conveying channel are arranged at two ends of the shell, the first conveying channel and the second conveying channel are respectively connected with the bottom of the first container and the bottom of the second container, the rotating body is arranged in the shell, the rotating body is approximately fusiform with two small ends and a large middle along the axis direction, blades are arranged on the rotating body, when the rotating body rotates positively, materials can be conveyed from the first conveying channel to the second conveying channel, when the rotating body rotates reversely, materials can be conveyed from the second conveying channel to the first conveying channel, the rotating direction of the rotating body is controlled, and the materials can be conveyed back and forth between the first container and the second container.
2. The method of claim 1, wherein the primary mixing of the powder and the liquid to form the primary mixed slurry comprises:
adding the liquid material to the interiors of the first container and the second container respectively;
agitating the liquid material in the first container and the liquid material in the second container to clean the inner walls of the first container and the second container and concentrate the liquid material into the first container;
the powder material is added into the first container or the powder material is added into the second container, and the material in one container and the material in the second container are conveyed into the other container.
3. The method of claim 2, further comprising, prior to said concentrating said liquid charge into said first container:
and the liquid material is circularly and reciprocally conveyed between the first container and the second container by the bidirectional homogenizing device so as to clean the inside of the bidirectional homogenizing device.
4. The method of claim 1, wherein the powder comprises a first powder and a second powder, the first powder comprising a binder, the second powder comprising an active material and a conductive agent;
the primary mixing of the powder material and the liquid material to form primary mixed slurry comprises the following steps:
mixing the first powder material and the liquid material to form glue solution;
and mixing the second powder material with the glue solution to form the primary mixed slurry.
5. The method of claim 4, wherein mixing the first powder material and the liquid material to form a paste comprises:
the first powder and the liquid are both added to the interior of one of the first container and the second container.
6. The method of claim 4, wherein mixing the first powder material and the liquid material to form a paste comprises:
adding the liquid charge to the interior of one of the first vessel and the second vessel;
adding the first powder to the interior of the other of the first container and the second container;
the material in one of the first container and the second container is transferred into the other.
7. The method of claim 1, further comprising, after forming the final slurry:
and conveying the finished slurry into a third container so as to store the finished slurry.
8. The method of claim 7, further comprising, prior to delivering the final slurry into a third container:
detecting the content of various components in the finished slurry;
determining the proportion of each component in the finished slurry according to the content of each component in the finished slurry;
delivering the finished slurry into the third vessel when it is determined that the proportions of the various components in the finished slurry are within a target range;
and reprocessing the finished slurry when the proportion of at least one component in the finished slurry is determined to be outside the target range.
9. The method of claim 8, wherein the reworking the finished slurry comprises:
determining a defect component in the finished slurry and a defect amount of the defect component, wherein the defect component is a component of which the proportion in the finished slurry is lower than a target range;
adding the defect component in accordance with the defect amount to an interior of one of the first container and the second container;
mixing the defect ingredient and the finished slurry to form a mixed slurry;
and (3) carrying out circulating and reciprocating conveying on the mixed slurry between the first container and the second container, and stirring and dispersing the mixed slurry in each conveying process to form secondary finished slurry.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210731377.9A CN115041050B (en) | 2022-06-24 | 2022-06-24 | Method for manufacturing lithium plasma |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210731377.9A CN115041050B (en) | 2022-06-24 | 2022-06-24 | Method for manufacturing lithium plasma |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115041050A CN115041050A (en) | 2022-09-13 |
| CN115041050B true CN115041050B (en) | 2023-09-01 |
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