CN113522209A - Synthesis equipment for producing narrow-particle-size ternary precursor by continuous method - Google Patents
Synthesis equipment for producing narrow-particle-size ternary precursor by continuous method Download PDFInfo
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- CN113522209A CN113522209A CN202110751421.8A CN202110751421A CN113522209A CN 113522209 A CN113522209 A CN 113522209A CN 202110751421 A CN202110751421 A CN 202110751421A CN 113522209 A CN113522209 A CN 113522209A
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- 239000002243 precursor Substances 0.000 title claims abstract description 63
- 230000015572 biosynthetic process Effects 0.000 title claims abstract description 41
- 238000003786 synthesis reaction Methods 0.000 title claims abstract description 41
- 238000011437 continuous method Methods 0.000 title claims abstract description 26
- 239000013078 crystal Substances 0.000 claims abstract description 49
- 238000003756 stirring Methods 0.000 claims abstract description 38
- 239000002245 particle Substances 0.000 claims abstract description 31
- 239000002002 slurry Substances 0.000 claims abstract description 16
- 230000006911 nucleation Effects 0.000 claims abstract description 4
- 238000010899 nucleation Methods 0.000 claims abstract description 4
- 238000001514 detection method Methods 0.000 claims description 19
- 238000010924 continuous production Methods 0.000 claims description 14
- 238000004519 manufacturing process Methods 0.000 claims description 14
- 238000004891 communication Methods 0.000 claims description 10
- 239000002893 slag Substances 0.000 claims description 10
- 230000032683 aging Effects 0.000 claims description 9
- 239000002699 waste material Substances 0.000 claims description 6
- 238000007599 discharging Methods 0.000 claims 9
- 239000000047 product Substances 0.000 description 12
- 238000006243 chemical reaction Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000009826 distribution Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 1
- KFDQGLPGKXUTMZ-UHFFFAOYSA-N [Mn].[Co].[Ni] Chemical compound [Mn].[Co].[Ni] KFDQGLPGKXUTMZ-UHFFFAOYSA-N 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 239000010405 anode material Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 150000001868 cobalt Chemical class 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- SEVNKUSLDMZOTL-UHFFFAOYSA-H cobalt(2+);manganese(2+);nickel(2+);hexahydroxide Chemical compound [OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[Mn+2].[Co+2].[Ni+2] SEVNKUSLDMZOTL-UHFFFAOYSA-H 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 150000002696 manganese Chemical class 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 239000011572 manganese Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 150000002815 nickel Chemical class 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000011206 ternary composite Substances 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/18—Stationary reactors having moving elements inside
- B01J19/1856—Stationary reactors having moving elements inside placed in parallel
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Abstract
The invention discloses synthesis equipment for producing a ternary precursor with a narrow particle size by a continuous method, which comprises a mother tank, a first stirring paddle, a first kettle, a second stirring paddle, a second kettle and a third stirring paddle, wherein slurry of the ternary precursor is filled in the mother tank, the slurry is in a nucleation stage in the mother tank and forms seed crystals, the first stirring paddle is arranged in the mother tank and is used for stirring the slurry in the mother tank, the first kettle is communicated with the mother tank so that the seed crystals can grow preliminarily in the first kettle, the second stirring paddle is arranged in the first kettle and is used for stirring the seed crystals in the first kettle, the second kettle is communicated with the first kettle so that the preliminarily grown seed crystals can further grow in the second kettle to form precursor particles, and the third stirring paddle is arranged in the second kettle and is used for stirring the seed crystals in the second kettle. The synthesis equipment for producing the narrow-particle-size ternary precursor by the continuous method has the advantages of simple structure, convenience in use, product stability, good product particle size uniformity and the like.
Description
Technical Field
The invention relates to the technical field of reaction kettle design, in particular to synthesis equipment for producing a narrow-particle-size ternary precursor by a continuous method.
Background
The ternary precursor material is nickel-cobalt-manganese hydroxide, and the ternary composite anode material precursor product is prepared by taking nickel salt, cobalt salt and manganese salt as raw materials, wherein the proportion of nickel, cobalt and manganese in the reaction kettle can be adjusted according to actual needs.
In the related technology, a single-kettle or multi-kettle parallel continuous method is used for producing the ternary precursor, the product diameter distance produced by the single kettle is generally more than or equal to 1.2, the particle size uniformity is general, while the discontinuous method needs one-kettle-one-kettle production, and the production efficiency is low.
Disclosure of Invention
The present invention is directed to solving, at least to some extent, one of the technical problems in the related art.
Therefore, the embodiment of the invention provides the synthesis equipment for producing the narrow-particle-size ternary precursor by the continuous method, which has the advantages of simple structure, good product stability and good product particle size uniformity and can be used for continuous production.
The synthesis equipment for producing the ternary precursor with the narrow particle size by the continuous method comprises the following steps: the mother tank is filled with slurry of a ternary precursor, and the slurry is in a nucleation stage in the mother tank and forms seed crystals; the first stirring paddle is arranged in the mother tank and used for stirring the slurry in the mother tank, and a slag discharge port is formed in the bottom of the mother tank so that waste slag in the mother tank can be discharged conveniently; the first kettle is communicated with the mother tank so that the seed crystals can grow in the first kettle preliminarily; the second stirring paddle is arranged in the first kettle and is used for stirring the seed crystals in the first kettle; the second kettle is communicated with the first kettle so that the seed crystals grown primarily further grow in the second kettle to form precursor particles; and the third stirring paddle is arranged in the second kettle and is used for stirring the seed crystals in the second kettle.
According to the synthesis equipment for producing the ternary precursor with the narrow particle size by the continuous method, provided by the embodiment of the invention, through the arrangement of the mother tank, the first kettle and the second kettle, the stability and the radial distance of the produced product are superior to those of the continuous method, the production capacity of a production line is superior to that of the discontinuous method, the continuous production of the ternary precursor is ensured, and the production efficiency of the product is improved.
In some embodiments, the mother tank has a first discharge port, the first tank has a first feed port and a second discharge port, the first discharge port is communicated with the first feed port, the first discharge port is higher than the first discharge port, so that the seed crystals in the mother tank flow into the first tank from the first discharge port and the first feed port, the second tank has a second feed port, the second discharge port is communicated with the second feed port, and the second discharge port is higher than the second discharge port, so that the seed crystals in the first tank flow into the second tank from the second discharge port and the second feed port.
In some embodiments, the first feed port is disposed adjacent to an upper end of the mother tank, the first feed port is disposed adjacent to an upper end of the first still, the second feed port is disposed adjacent to an upper end of the first still, and the second feed port is disposed adjacent to an upper end of the second still.
In some embodiments, the synthesis apparatus for producing a narrow-particle-size ternary precursor by the continuous process further comprises: the first pipeline is communicated with the mother tank and the first kettle; a second conduit communicating the first tank and the second tank.
In some embodiments, the angle between the axis of the first conduit and the horizontal is between 15 ° and 45 °, and the angle between the axis of the second conduit and the horizontal is between 15 ° and 45 °.
In some embodiments, the first tank is provided in plurality, the first tanks are arranged at intervals along the circumferential direction of the mother tank, the second tank is provided in plurality, and at least one of the second tanks is connected with the first tank.
In some embodiments, the synthesis apparatus for producing a narrow-particle-size ternary precursor by the continuous process further comprises: the first detection piece is arranged on the first pipeline and used for detecting the seed crystal flow in the first pipeline; and the second detection piece is arranged on the second pipeline and is used for detecting the seed crystal flow in the second pipeline.
In some embodiments, the first and second detection members are both sight glasses or flow meters.
In some embodiments, the synthesis apparatus for producing a narrow-particle-size ternary precursor by the continuous process further comprises: the first control valve is arranged on the first pipeline so as to control the communication and the closing of the first pipeline; and the second control valve is arranged on the second pipeline so as to control the communication and the closing of the second pipeline.
In some embodiments, the synthesis apparatus for producing a narrow particle size ternary precursor by the continuous process further comprises an aging system in communication with the second kettle such that the precursor particles in the second kettle are aged in the aging system.
Drawings
Fig. 1 is a schematic structural diagram of a synthesis device for producing a narrow-particle-size ternary precursor by a continuous method according to an embodiment of the invention.
Reference numerals:
a synthesis device 100 for producing a ternary precursor with a narrow particle size by a continuous method;
a mother tank 1; a first discharge port 11; a first kettle 2; the first feed port 21; a second discharge port 22; a second kettle 3; the second feed opening 31; a first duct 4; a second duct 5; an aging system 6.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
A synthesis apparatus for producing a narrow-particle-diameter ternary precursor according to an embodiment of the present invention by a continuous process is described below with reference to fig. 1.
As shown in fig. 1, a synthesis apparatus 100 for producing a narrow-particle-size ternary precursor by a continuous method according to an embodiment of the present invention includes a mother tank 1, a first stirring blade (not shown in the figure), a first kettle 2, a second stirring blade (not shown in the figure), a second kettle 3, and a third stirring blade (not shown in the figure).
The mother tank 1 is filled with slurry of a ternary precursor, the slurry is in a nucleation stage in the mother tank 1 and forms seed crystals, and the bottom of the mother tank 1 is provided with a slag discharge port (not shown in the figure) so as to discharge waste slag in the mother tank 1. The first stirring paddle is arranged in the mother tank 1 and is used for stirring the slurry in the mother tank 1. Specifically, slurry (nickel-cobalt-manganese salt in a well-proportioned ratio) is added into the mother tank 1, a master worker adjusts the pH value of the slurry in the mother tank 1, and the pH value in the mother tank 1 is at a high value, so that the slurry in the mother tank 1 only nucleates but does not grow.
The first kettle 2 is communicated with the mother tank 1 so that the seed crystal can grow in the first kettle 2 primarily. The second stirring paddle is arranged in the first kettle 2 and used for stirring seed crystals in the first kettle 2, and the bottom of the first kettle 2 is provided with a first slag discharge port (not shown in the figure) so as to discharge waste slag in the first kettle 2. Specifically, the master worker adjusts the PH of the seed crystal in the first kettle 2 to make the PH at a low level value, so that the seed crystal grows primarily in the first kettle 2.
The second kettle 3 is communicated with the first kettle 2, so that the seed crystals grown primarily further grow in the second kettle 3 to form precursor particles. The third stirring paddle is arranged in the second kettle 3 and used for stirring seed crystals in the second kettle 3, and the bottom of the second kettle 3 is provided with a second slag discharge port (not shown in the figure) so that waste slag in the second kettle 3 can be discharged. Specifically, a worker adjusts the PH value in the first kettle 2 to make the PH value of the seed crystal in the second kettle 3 be at a low value, and adds different salt adjusting and controlling ratios into the second kettle 3 to further grow the seed crystal in the second kettle 3 to form precursor particles.
According to the synthesis equipment 100 for producing the narrow-particle-size ternary precursor by the continuous method, the mother tank 1, the first kettle 2 and the second kettle 3 are sequentially connected in series through the arrangement of the mother tank 1, the first kettle 2 and the second kettle 3, so that slurry can nucleate in the mother tank 1 to form seed crystals without growing, the seed crystals can be prevented from growing initially in the first kettle 2, optimized growth is carried out in the second kettle 3 to form the ternary precursor, the synthesis time of the ternary precursor is prolonged through the arrangement of the first kettle 2 and the second kettle 3, the mother tank 1 can continuously convey the seed crystals into the first kettle 2, the waiting time for the growth of the seed crystals in the first kettle 2 is saved, the problems of overlarge product diameter distance of a single kettle and low production efficiency of an intermittent method are effectively solved, the stable and continuous production of the ternary precursor is ensured, and the production efficiency of the ternary precursor is improved.
According to the synthesis equipment 100 for producing the ternary precursor with the narrow particle size by the continuous method, the first stirring paddle, the second stirring paddle and the third stirring paddle are arranged to respectively stir the mother tank 1, the first kettle 2 and the second kettle 3, and the stirring rates of the first stirring paddle, the second stirring paddle and the third stirring paddle are respectively controlled, so that materials in the mother tank 1, the first kettle 2 and the second kettle 3 are fully reacted and stirred.
It is understood that the arrangement of the synthesis equipment 100 for producing the ternary precursor with narrow particle size by the continuous method of the embodiment of the present invention is not limited thereto, since the higher the number of stages of the kettles is, the narrower the product particle size distribution is, therefore, a third kettle, a fourth kettle and even an nth kettle can be arranged, but due to the arrangement of the first kettle 2 and the second kettle 3, the technical requirements of the product, namely, the purpose of improving the product radial distance distribution to 0.8-1.0, can be achieved. Therefore, the first kettle 2 and the second kettle 3 enable the setting of the synthesis equipment 100 for producing the ternary precursor with narrow particle size by a continuous method to be more reasonable.
In some embodiments, the mother tank 1 has a first discharge port 11, the first tank 2 has a first feed port 21 and a second discharge port 22, the first discharge port 11 is communicated with the first feed port 21, the first discharge port 11 is higher than the first discharge port 11, so that the seed crystals in the mother tank 1 flow into the first tank 2 from the first discharge port 11 and the first feed port 21, the second tank 3 has a second feed port 31, the second discharge port 22 is communicated with the second feed port 31, and the second discharge port 22 is higher than the second discharge port 22, so that the seed crystals in the first tank 2 flow into the second tank 3 from the second discharge port 22 and the second feed port 31. The first discharge port 11 is arranged near the upper end of the mother tank 1, the first feed port 21 is arranged near the upper end of the first kettle 2, the second discharge port 22 is arranged near the upper end of the first kettle 2, and the second feed port 31 is arranged near the upper end of the second kettle 3. Specifically, as shown in fig. 1, the mother tank 1 is higher than the first kettle 2, and the first kettle 2 is higher than the second kettle 3, so that the seed crystals in the mother tank 1 can automatically flow into the first kettle 2, and the seed crystals primarily grown in the first kettle 2 can automatically flow into the second kettle 3.
In some embodiments, the synthesis apparatus 100 for producing a narrow-particle-size ternary precursor by a continuous process further comprises a first conduit 4 and a second conduit 5.
The first pipeline 4 is communicated with the mother tank 1 and the first kettle 2, and the second pipeline 5 is communicated with the first kettle 2 and the second kettle 3. Specifically, the upper end of the first pipeline 4 is communicated with the first discharge hole 11 of the mother tank 1, the lower end of the first pipeline 4 is communicated with the feed inlet of the first kettle 2, the upper end of the second pipeline 5 is communicated with the second discharge hole 22 of the first kettle 2, and the lower end of the second pipeline 5 is communicated with the second feed inlet 31 of the second kettle 3. From this, in the seed crystal of 1 in the mother's groove flowed into first cauldron 2 through first pipeline 4, the seed crystal that grows up in first cauldron 2 tentatively flowed into second cauldron 3 through second pipeline 5 for the synthesis equipment 100 of narrow particle diameter ternary precursor of continuous process production sets up more rationally.
In some embodiments, the angle between the axis of the first conduit 4 and the horizontal is between 15 ° and 45 °, and the angle between the axis of the second conduit 5 and the horizontal is between 15 ° and 45 °. When the included angle between the axis of the first pipeline 4 and the horizontal plane and the included angle between the axis of the second pipeline 5 and the horizontal plane are both smaller than 15 degrees, the first pipeline 4 and the second pipeline 5 are close to the horizontal plane, the transportation of the seed crystals in the first pipeline 4 and the second pipeline 5 is not facilitated, and when the included angle between the axis of the first pipeline 4 and the horizontal plane and the included angle between the axis of the second pipeline 5 and the horizontal plane are both larger than 45 degrees, the installation difficulty of the first pipeline 4 and the second pipeline 5 is caused. Therefore, the included angle between the axis of the first pipeline 4 and the horizontal plane and the included angle between the axis of the second pipeline 5 and the horizontal plane are set to be 15-45 degrees, so that the first pipeline 4 and the second pipeline 5 are guaranteed to smoothly transport seed crystals, the installation and manufacturing difficulty of the synthesis equipment 100 for producing the narrow-particle-size ternary precursor by a continuous method is reduced, and the synthesis equipment 100 for producing the narrow-particle-size ternary precursor by the continuous method is more reasonable in setting.
In some embodiments, there are a plurality of first tanks 2, a plurality of first tanks 2 are arranged at intervals along the circumferential direction of the mother tank 1, and a plurality of second tanks 3, at least one second tank 3 being connected to the first tanks 2. Specifically, as shown in fig. 1, there are two first kettles 2 (there are two first kettles 2 as shown in fig. 1), two first kettles 2 are respectively located at the left and right sides of the mother kettle, and the mother kettle is higher than the first kettles 2, there are two second kettles 3 (there are two second kettles 3 as shown in fig. 1), each first kettle 2 is connected with one second kettle 3, and the first kettle 2 is higher than the second kettle 3. Therefore, the production efficiency of the 100 th generation synthesis equipment for producing the narrow-particle-size ternary precursor by the continuous method is further improved.
It is to be understood that the arrangement of first tank 2 and second tank 3 is not limited thereto, and there may be a plurality of first tanks 2, and each first tank 2 may be connected to a plurality of second tanks 3, for example: one first tank 2 may be connected to two second tanks 3, or one first tank 2 may be connected to three second tanks 3.
In some embodiments, the synthesis apparatus 100 for producing a narrow-particle-size ternary precursor by a continuous method further comprises a first detecting member (not shown in the figures) and a second detecting member (not shown in the figures).
The first detection piece is arranged on the first pipeline 4 and used for detecting the seed crystal flow in the first pipeline 4, and the second detection piece is arranged on the second pipeline 5 and used for detecting the seed crystal flow in the second pipeline 5. From this, detect the flow that detects the seed crystal in first pipeline 4 and the second pipeline 5 respectively through first detection piece and second detection piece, if take place to block up in first pipeline 4 and the second pipeline 5, will in time change or dredge first pipeline 4 or second pipeline 5, guarantee that production lasts and go on.
In some embodiments, the first and second sensing elements are both sight glasses or flow meters. The first detecting member and the second detecting member can be selected according to actual needs, for example: the first detection piece is a visible mirror, the second detection piece is a flowmeter, or the first detection piece is a flowmeter, the second detection piece is a visible mirror, or the first detection piece and the second detection piece are both visible mirrors, or the first detection piece and the second detection piece are both flowmeters. Therefore, the setting of the synthesis equipment 100 for producing the ternary precursor with the narrow particle size by the continuous method is more reasonable through the flow of the seed crystals in the first pipeline 4 and the second pipeline 5.
In some embodiments, the synthesis apparatus 100 for producing a narrow particle size ternary precursor by a continuous process further comprises a first control valve and a second control valve.
The first control valve is arranged on the first pipeline 4 so as to control the communication and the closing of the first pipeline 4, and the second control valve is arranged on the second pipeline 5 so as to control the communication and the closing of the second pipeline 5. Thus, the first pipe 4 and the second pipe 5 can be controlled by the first control valve and the second control valve, respectively, so as to control the circulation of the seed crystals in the mother tank 1 and the first reactor 2.
It will be appreciated that the first control valve and the second control valve are both ball valves or butterfly valves.
In some embodiments, the synthesis apparatus 100 for producing a narrow-particle-size ternary precursor by a continuous process further comprises an aging system 6, wherein the aging system 6 is in communication with the second kettle 3, so that the precursor particles in the second kettle 3 are aged in the aging system 6. Thereby, the precursor particles are aged in the aging system 6 to react to produce the final product.
The synthesis equipment 100 for producing the ternary precursor with the narrow particle size by the continuous method provided by the embodiment of the invention can realize continuous reaction, is simple to operate, greatly improves the yield, improves the particle size distribution of the ternary precursor, reduces the micro powder in the product, improves the utilization rate of small particle waste in a reaction system of the ternary precursor, obviously saves the production cost, and optimizes the product performance.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the present disclosure, the terms "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" and the like mean that a specific feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present disclosure. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (10)
1. A synthesis equipment for producing a ternary precursor with a narrow particle size by a continuous method is characterized by comprising the following steps:
the mother tank is filled with slurry of a ternary precursor, the slurry is in a nucleation stage in the mother tank and forms seed crystals, and the bottom of the mother tank is provided with a slag discharge port so that waste slag in the mother tank can be discharged conveniently;
the first stirring paddle is arranged in the mother tank and is used for stirring the slurry in the mother tank;
the first kettle is communicated with the mother tank so that the seed crystals can grow in the first kettle preliminarily;
the second stirring paddle is arranged in the first kettle and is used for stirring the seed crystals in the first kettle;
the second kettle is communicated with the first kettle so that the seed crystals grown primarily further grow in the second kettle to form precursor particles;
and the third stirring paddle is arranged in the second kettle and is used for stirring the seed crystals in the second kettle.
2. The synthesis equipment for producing the narrow-particle-size ternary precursor by the continuous method according to claim 1, wherein the mother tank is provided with a first discharge hole,
the first kettle is provided with a first feeding hole and a second discharging hole, the first discharging hole is communicated with the first feeding hole, the first discharging hole is higher than the first discharging hole, so that seed crystals in the mother tank can flow into the first kettle from the first discharging hole and the first feeding hole,
the second kettle is provided with a second feeding hole, the second discharging hole is communicated with the second feeding hole, and the second discharging hole is higher than the second discharging hole, so that seed crystals in the first kettle can flow into the second kettle from the second discharging hole and the second feeding hole.
3. The synthesis apparatus for producing the narrow-particle-size ternary precursor according to claim 2, wherein the first discharge port is disposed adjacent to the upper end of the mother tank,
the first feed inlet is arranged near the upper end of the first kettle, the second discharge outlet is arranged near the upper end of the first kettle,
the second feed inlet is arranged close to the upper end of the second kettle.
4. The synthesis apparatus for producing the narrow-particle-size ternary precursor according to claim 1, further comprising:
the first pipeline is communicated with the mother tank and the first kettle;
a second conduit communicating the first tank and the second tank.
5. Synthesis plant for the production of ternary precursors with narrow particle size by the continuous process according to claim 4, characterized in that the angle between the axis of the first duct and the horizontal plane is comprised between 15 ° and 45 °,
the included angle between the axis of the second pipeline and the horizontal plane is 15-45 degrees.
6. Synthesis plant for the production of a narrow-particle-size ternary precursor according to any one of claims 1 to 5, characterized in that,
a plurality of first kettles are arranged at intervals along the circumferential direction of the female groove,
the number of the second kettles is multiple, and at least one second kettle is connected with the first kettle.
7. The synthesis apparatus for producing the narrow-particle-size ternary precursor according to claim 4, further comprising:
the first detection piece is arranged on the first pipeline and used for detecting the seed crystal flow in the first pipeline;
and the second detection piece is arranged on the second pipeline and is used for detecting the seed crystal flow in the second pipeline.
8. The synthesis apparatus for producing the ternary precursor with the narrow particle size by the continuous method according to claim 7, wherein the first detection member and the second detection member are both visible mirrors or flow meters.
9. The synthesis apparatus for producing the narrow-particle-size ternary precursor according to claim 4, further comprising:
the first control valve is arranged on the first pipeline so as to control the communication and the closing of the first pipeline;
and the second control valve is arranged on the second pipeline so as to control the communication and the closing of the second pipeline.
10. The continuous process narrow particle size ternary precursor synthesis apparatus according to any one of claims 1-5, further comprising an aging system in communication with the second vessel such that the precursor particles in the second vessel are aged in the aging system.
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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