CN218435440U - Precursor material recovery system in ternary precursor mother liquor - Google Patents
Precursor material recovery system in ternary precursor mother liquor Download PDFInfo
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- CN218435440U CN218435440U CN202222771798.2U CN202222771798U CN218435440U CN 218435440 U CN218435440 U CN 218435440U CN 202222771798 U CN202222771798 U CN 202222771798U CN 218435440 U CN218435440 U CN 218435440U
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Abstract
A precursor material recovery system in ternary precursor mother liquor comprises a first-stage washing unit formed by connecting a first cache tank, a first washing device, a first filter and a first filter material tank; the first-stage washing unit comprises a first pipeline, a second pipeline, a third pipeline and a fourth pipeline; the first cache groove is communicated with the first washing device through a first pipeline, the first washing device is communicated with the first filter through a second pipeline, the first filter is communicated with the first filtered material groove through a third pipeline, and the first filtered material groove is communicated with the fourth pipeline through a fourth pipeline; the second-stage washing unit is formed by connecting a pulping tank, a second cache tank, a second washing device, a second filter and a second filtering material tank; the utility model ensures that the materials in the mother liquor are divided into two parts and all enter the system again, thereby improving the direct recovery rate of metals in the production process; meanwhile, the precipitation content of heavy metal in discharged mother liquor is reduced, and the production cost is reduced.
Description
Technical Field
The utility model relates to a ternary precursor technical field, concretely relates to precursor material recovery system in ternary precursor mother liquor.
Background
The nickel-cobalt-manganese ternary cathode material is an important lithium ion battery cathode material, has the advantages of cycle performance superior to that of lithium cobaltate, cost far lower than that of lithium cobaltate, energy density far higher than that of lithium iron phosphate, balanced safety, simple synthesis process and the like, and gradually becomes a mainstream cathode material of an automobile power battery.
In the preparation process of the nickel-cobalt-manganese ternary cathode material, the preparation process of the precursor accounts for 60%, and the quality of the precursor directly influences the performance of the cathode material. The main method for producing precursors in the industry is a chemical coprecipitation method, and the main components of mother liquor in the production process are a small amount of nickel-cobalt-manganese hydroxide precipitate, sulfate ions, sodium ions, free ammonia and the like. A small amount of nickel-cobalt-manganese hydroxide precipitates in the mother liquor, the granularity of the ternary precursor is smaller than that of a normally qualified ternary precursor product, the reaction time is short in the synthesis stage, and the frequency of a feed pump is too high in the solid-liquid separation process, so that the nickel-cobalt-manganese hydroxide precipitates penetrate through a filter cloth and flow out of a system along with the mother liquor.
The main treatment process of mother liquor generated by the ternary precursor at present comprises pH adjustment, stripping deamination, ammonia recovery, heavy metal precipitation and MVR evaporative crystallization, wherein: heavy metal precipitation is subjected to re-dissolution treatment, and the solution is treated to obtain a sodium sulfate product and pure water. However, the heavy metal precipitation re-dissolution treatment cost is high, and the direct metal yield in the production process is influenced.
Therefore, the present invention is to solve the above-mentioned deficiencies of the prior art and to provide a solution to the problems.
Disclosure of Invention
The utility model aims at providing a precursor material recovery system in ternary precursor mother liquor.
In order to achieve the above purpose, the utility model adopts the technical scheme that: a precursor material recovery system in ternary precursor mother liquor comprises a first-stage washing unit formed by connecting a first cache tank, a first washing device, a first filter and a first filter material tank;
the first-stage washing unit comprises a first pipeline, a second pipeline, a third pipeline and a fourth pipeline;
the first cache groove is communicated with the first washing device through a first pipeline, the first washing device is communicated with the first filter through a second pipeline, the first filter is communicated with the first filtered material groove through a third pipeline, and the first filtered material groove is communicated with the fourth pipeline through a fourth pipeline;
a first material transferring valve is arranged on the first pipeline, a first mother liquid discharging valve is arranged on the second pipeline, a second material transferring valve is arranged on the third pipeline, and a third material transferring valve is arranged on the fourth pipeline;
the second-stage washing unit is formed by connecting a pulping tank, a second cache tank, a second washing device, a second filter and a second filtering material tank;
the second-stage washing unit comprises a fifth pipeline, a sixth pipeline, a seventh pipeline, an eighth pipeline, a ninth pipeline and a tenth pipeline;
the first washing device is communicated with the slurrying tank through a fifth pipeline, the slurrying tank is communicated with the second cache tank through a sixth pipeline, the second cache tank is communicated with the second washing device through a seventh pipeline, the second washing device is communicated with the second filter through an eighth pipeline, the second filter is communicated with the second filtered material tank through a ninth pipeline, and the second filtered material tank is communicated with the slurrying tank through a tenth pipeline;
the fifth pipeline is provided with a first qualified material discharge valve, the sixth pipeline is provided with a fourth material transferring valve, the seventh pipeline is provided with a second mother liquid discharge valve, the eighth pipeline is provided with a fourth material transferring valve, the ninth pipeline is provided with a fifth material transferring valve, and the tenth pipeline is provided with a sixth material transferring valve.
In a further technical scheme, the device also comprises a mother liquid waste water tank, a first mother liquid waste water pipeline and a second mother liquid waste water pipeline, wherein the first filter is communicated with the mother liquid waste water tank through the first mother liquid waste water pipeline, and the second filter is communicated with the second mother liquid waste water tank through the second mother liquid waste water pipeline.
In a further technical scheme, the first filter and the second filter are both precision filters.
In a further technical scheme, the device further comprises a wet-type iron remover, and the wet-type iron remover is arranged between the slurrying tank and the second cache tank.
In a further technical scheme, the first filter and the second filter are both provided with regulating valves.
In a further technical scheme, the first-stage washing unit and the second-stage washing unit are both circulating units.
The utility model discloses a theory of operation and advantage as follows:
the first-stage washing unit works, first-stage washing is carried out, materials generated in an upstream process enter a first cache groove, a first material transfer valve is opened, the materials enter a first washing device through a first pipeline for washing (solid-liquid separation is realized, the solid-liquid separation of washing equipment is the prior art, the working principle is well known by a person skilled in the art, and is not described in detail), a first mother liquid discharge valve is opened, mother liquid to be washed enters a first filter through a second pipeline for filtering, a second material transfer valve is opened, the generated high-density materials flow through a first material groove through a third pipeline and enter the first cache groove through a fourth pipeline, and the generated high-density materials enter the first washing device along with the next round of washing and feeding for washing;
and the second-stage washing unit works, the discharge valve of the first qualified material is opened, the solid washed by the first washing device enters a pulping tank through a fifth pipeline for pulp washing, the fourth material transferring valve is opened, the material after pulp washing in the pulping tank enters a second cache tank through a sixth pipeline and enters a second washing device through a seventh pipeline for washing (solid-liquid separation), the discharge valve of the second mother liquid is opened, the washed mother liquid to be washed enters a second filter through an eighth pipeline for filtering, the fifth material transferring valve and the sixth material transferring valve are opened, the generated high-density material enters a second material tank through a ninth pipeline and enters a pulping tank through a tenth pipeline, the high-density material enters the second washing device through the second cache tank along with the feeding of the next round of second-stage washing to be washed, and the high-purity metal is obtained, and the whole process is cyclic.
The utility model ensures that the materials in the mother liquor are divided into two parts and all enter the system again, thereby improving the direct recovery rate of metals in the production process; meanwhile, the precipitation content of heavy metal in discharged mother liquor is reduced, the re-dissolution treatment cost for subsequently recovering heavy metal precipitate is reduced, and the production cost is reduced.
Drawings
Fig. 1 is a schematic view of the working principle of the embodiment of the present invention.
In the above drawings: 1. a first cache slot; 2. a first washing device; 3. a first filter; 4. a first filter material tank; 5. a slurrying tank; 6. a second cache slot; 7. a second washing device; 8. a second filter; 9. a second filtering material groove; 10. a mother liquor wastewater tank; 11. a wet iron remover; 12. a first pipeline; 13, a second pipeline, 14, a third pipeline, 15, a fourth pipeline, 21, a fifth pipeline, 22, a sixth pipeline, 23, a seventh pipeline, 24, an eighth pipeline, 25, a ninth pipeline, 26, a tenth pipeline; 27. a first mother liquor wastewater line; 28. a second mother liquor waste water line.
Detailed Description
The invention will be further described with reference to the following drawings and examples:
example (b): the present disclosure will be described more fully hereinafter with reference to the accompanying drawings, in which embodiments of the disclosure may be shown and described, and which, when modified and varied by the techniques taught herein, can be made by those skilled in the art without departing from the spirit and scope of the disclosure.
The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure. The singular forms "a", "an", "the" and "the", as used herein, also include the plural forms.
The terms "first," "second," and the like, as used herein, are not intended to be limited to a particular order or sequence, nor are they intended to be used to limit the scope of the present disclosure, but only to distinguish components or operations described by the same terms.
As used herein, "connected" or "positioned" refers to two or more elements or devices being in direct physical contact with each other or in indirect physical contact with each other, and may also refer to two or more elements or devices being in operation or acting on each other.
As used herein, the terms "comprising," "including," "having," and the like are open-ended terms that mean including, but not limited to.
Referring to the attached drawing 1, a precursor material recovery system in a ternary precursor mother liquor comprises a first-stage washing unit formed by connecting a first cache tank 1, a first washing device 2, a first filter 3 and a first filter material tank 4;
the primary washing unit comprises a first pipeline 12, a second pipeline 13, a third pipeline 14 and a fourth pipeline 15;
the first cache tank 1 is communicated with the first washing device 2 through a first pipeline 12, the first washing device 2 is communicated with the first filter 3 through a second pipeline 13, the first filter 3 is communicated with the first filtering material tank 4 through a third pipeline 14, and the first filtering material tank 4 is communicated with a fourth pipeline 15 through a fourth pipeline 15;
a first material transferring valve is arranged on the first pipeline 12, a first mother liquor discharging valve is arranged on the second pipeline 13, a second material transferring valve is arranged on the third pipeline 14, and a third material transferring valve is arranged on the fourth pipeline 15;
the device also comprises a secondary washing unit which is formed by connecting a pulping tank 5, a second cache tank 6, a second washing device 7, a second filter 8 and a second filtering material tank 9;
the secondary scrubbing unit comprises a fifth pipeline 21, a sixth pipeline 22, a seventh pipeline 23, an eighth pipeline 24, a ninth pipeline 25 and a tenth pipeline 26;
the first washing device 2 and the slurrying tank 5 are communicated through a fifth pipeline 21, the slurrying tank 5 and the second buffer tank 6 are communicated through a sixth pipeline 22, the second buffer tank 6 and the second washing device 7 are communicated through a seventh pipeline 23, the second washing device 7 and the second filter 8 are communicated through an eighth pipeline 24, the second filter 8 and the second filter material tank 9 are communicated through a ninth pipeline 25, and the second filter material tank 9 and the slurrying tank 5 are communicated through a tenth pipeline 26;
the fifth pipeline 21 is provided with a first qualified material discharge valve, the sixth pipeline 22 is provided with a fourth material transferring valve, the seventh pipeline 23 is provided with a second mother liquor discharge valve, the eighth pipeline 24 is provided with a fourth material transferring valve, the ninth pipeline 25 is provided with a fifth material transferring valve, and the tenth pipeline 26 is provided with a sixth material transferring valve.
In addition, as shown in fig. 1, the filter further includes a mother liquor wastewater tank 10, a first mother liquor wastewater line 27 and a second mother liquor wastewater line 28, the first filter 3 and the mother liquor wastewater tank 10 are communicated through the first mother liquor wastewater line, and the second filter 8 and the second mother liquor wastewater tank 10 are communicated through the second mother liquor wastewater line.
On the basis, as shown in fig. 1, the first filter 3 and the second filter 8 are both precision filters; precision filter's filter fineness is higher, and high temperature resistant, and the filter core is difficult to take place deformation, and life is high.
On the basis, as shown in fig. 1, the system further comprises a wet iron remover 11, wherein the wet iron remover 11 is arranged between the slurry tank 5 and the second buffer tank 6; the wet iron remover 11 adsorbs iron in the slurrying tank 5, and reduces the metal content in the material.
On the basis, as shown in fig. 1, the first filter 3 and the second filter 8 are both provided with regulating valves; the regulating valve can feed according to the feeding requirement.
On the basis, as shown in FIG. 1, the primary washing unit and the secondary washing unit are both circulating units.
The utility model discloses a theory of operation and advantage as follows:
the first-stage washing unit works, first-stage washing feeding is carried out, materials generated in an upstream process enter the first cache tank 1, the first material transfer valve is opened, the materials enter the first washing device 2 through the first pipeline 12 for washing (solid-liquid separation is realized, the working principle of washing equipment is well known by the technical personnel in the field and is not described in detail), the first mother liquid discharge valve is opened, mother liquid to be washed enters the first filter 3 through the second pipeline 13 for filtering, the second material transfer valve is opened, the generated high-density materials flow through the first material tank 4 through the third pipeline 14 and enter the first cache tank 1 through the fourth pipeline 15, and enter the first washing device 2 along with the next round of washing feeding for washing;
the second-stage washing unit works, the first qualified material discharge valve is opened, the solid washed by the first washing device 2 enters the slurrying tank 5 through the fifth pipeline 21 for slurry washing, the fourth material transfer valve is opened, the material after slurry washing in the slurrying tank 5 enters the second buffer tank 6 through the sixth pipeline 22 and enters the second washing device 7 through the seventh pipeline 23 for washing (solid-liquid separation), the second mother liquor discharge valve is opened, the washed mother liquor to be treated enters the second filter 8 through the eighth pipeline 24 for filtering, the fifth material transfer valve and the sixth material transfer valve are opened, the produced high-density material enters the second filtered material tank 9 through the ninth pipeline 25 and enters the slurrying tank 5 through the tenth pipeline 26, and enters the second washing device 7 through the second buffer tank 6 along with the feeding of the next second-stage washing for washing, so as to obtain high-purity metal, the whole process is cyclic (the first-stage washing unit and the second-stage washing unit, only the first-stage washing unit can be arranged, and the specific working principle of the first-stage washing unit and the second-stage washing unit can be the same as the second-stage washing unit.
The utility model ensures that the materials in the mother liquor are divided into two parts and all enter the system again, thereby improving the direct recovery rate of metals in the production process; meanwhile, the precipitation content of heavy metal in discharged mother liquor is reduced, the re-dissolution treatment cost for subsequently recovering heavy metal precipitate is reduced, and the production cost is reduced.
The utility model ensures that the materials in the mother liquor are divided into two parts and all enter the system again, thereby improving the direct recovery rate of metals in the production process; meanwhile, the precipitation content of heavy metal in discharged mother liquor is reduced, the re-dissolution treatment cost of the subsequent recovery of heavy metal precipitate is reduced, and the production cost is reduced.
The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose of the embodiments is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, which cannot limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered by the protection scope of the present invention.
Claims (6)
1. A precursor material recovery system in ternary precursor mother liquor is characterized in that: the device comprises a first-level washing unit formed by connecting a first cache tank (1), a first washing device (2), a first filter (3) and a first filtering material tank (4);
the primary washing unit comprises a first pipeline (12), a second pipeline (13), a third pipeline (14) and a fourth pipeline (15);
the first cache tank (1) is communicated with the first washing device (2) through a first pipeline (12), the first washing device (2) is communicated with the first filter (3) through a second pipeline (13), the first filter (3) is communicated with the first filtering material tank (4) through a third pipeline (14), and the first filtering material tank (4) is communicated with a fourth pipeline (15);
a first material transferring valve is arranged on the first pipeline (12), a first mother liquid discharging valve is arranged on the second pipeline (13), a second material transferring valve is arranged on the third pipeline (14), and a third material transferring valve is arranged on the fourth pipeline (15);
the device also comprises a secondary washing unit which is formed by connecting a pulping tank (5), a second cache tank (6), a second washing device (7), a second filter (8) and a second filtering material tank (9);
the secondary washing unit comprises a fifth pipeline (21), a sixth pipeline (22), a seventh pipeline (23), an eighth pipeline (24), a ninth pipeline (25) and a tenth pipeline (26);
the first washing device (2) is communicated with the slurrying tank (5) through a fifth pipeline (21), the slurrying tank (5) is communicated with the second cache tank (6) through a sixth pipeline (22), the second cache tank (6) is communicated with the second washing device (7) through a seventh pipeline (23), the second washing device (7) is communicated with the second filter (8) through an eighth pipeline (24), the second filter (8) is communicated with the second filtering material tank (9) through a ninth pipeline (25), and the second filtering material tank (9) is communicated with the slurrying tank (5) through a tenth pipeline (26);
the device is characterized in that a first qualified material discharge valve is arranged on the fifth pipeline (21), a fourth material transferring valve is arranged on the sixth pipeline (22), a second mother liquid discharge valve is arranged on the seventh pipeline (23), a fourth material transferring valve is arranged on the eighth pipeline (24), a fifth material transferring valve is arranged on the ninth pipeline (25), and a sixth material transferring valve is arranged on the tenth pipeline (26).
2. The system for recovering precursor materials in ternary precursor mother liquor according to claim 1, wherein: still include mother liquor wastewater groove (10), first mother liquor wastewater pipeline and second mother liquor wastewater pipeline, first filter (3) and mother liquor wastewater groove (10) are through first mother liquor wastewater pipeline intercommunication, second filter (8) and mother liquor wastewater groove (10) are through second mother liquor wastewater pipeline intercommunication.
3. The system for recovering precursor materials in ternary precursor mother liquor according to claim 1, wherein: the first filter (3) and the second filter (8) are both precise filters.
4. The precursor material recovery system in a ternary precursor mother liquor according to claim 1, characterized in that: still include wet-type de-ironing separator (11), wet-type de-ironing separator (11) set up between slurrying groove (5) and second buffer tank (6).
5. The system for recovering precursor materials in ternary precursor mother liquor according to claim 1, wherein: and regulating valves are arranged on the first filter (3) and the second filter (8).
6. The system for recovering precursor materials in ternary precursor mother liquor according to claim 1, wherein: and the primary washing unit and the secondary washing unit are both circulating units.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222771798.2U CN218435440U (en) | 2022-10-20 | 2022-10-20 | Precursor material recovery system in ternary precursor mother liquor |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202222771798.2U CN218435440U (en) | 2022-10-20 | 2022-10-20 | Precursor material recovery system in ternary precursor mother liquor |
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| CN218435440U true CN218435440U (en) | 2023-02-03 |
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| CN202222771798.2U Active CN218435440U (en) | 2022-10-20 | 2022-10-20 | Precursor material recovery system in ternary precursor mother liquor |
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