CN112376086A - Material concentration adjusting system applied to electrolytic copper foil - Google Patents
Material concentration adjusting system applied to electrolytic copper foil Download PDFInfo
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- CN112376086A CN112376086A CN202011191384.1A CN202011191384A CN112376086A CN 112376086 A CN112376086 A CN 112376086A CN 202011191384 A CN202011191384 A CN 202011191384A CN 112376086 A CN112376086 A CN 112376086A
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- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D1/00—Electroforming
- C25D1/04—Wires; Strips; Foils
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Abstract
The invention discloses a material concentration adjusting system applied to electrolytic copper foil, which comprises a copper dissolving tank, a buffer tank, a liquid purifying tank, a cooling device, an electrolytic cell group and a multistage additive filler unit, wherein the buffer tank is arranged on the top of the electrolytic copper foil; the copper dissolving tank, the buffer tank, the liquid purifying tank, the cooling device and the electrolytic cell group are sequentially communicated through pipelines, the liquid outlet of the electrolytic cell group is respectively communicated with the buffer tank and the multistage additive packing unit through pipelines, and the liquid outlet of the multistage additive packing unit is communicated with the liquid inlet of the liquid purifying tank through a pipeline. According to the invention, by adopting a reasonable configuration mode among the copper dissolving tank, the buffer tank, the liquid purifying tank, the cooling device, the electrolytic cell group and the multi-stage additive filler unit and introducing the online analyzer, the real-time monitoring of the content of copper ions and additives in the solution is realized, the fluctuation range of the concentration of each component in the solution is greatly reduced, and the accurate guidance effect on the real-time supplement of materials after the electrolytic reaction is realized; meanwhile, unreacted raw materials after electrolysis can be reused, and the utilization rate of the raw materials is obviously improved.
Description
Technical Field
The invention relates to an electrolytic copper foil preparation system, in particular to a material concentration adjusting system applied to an electrolytic copper foil.
Background
At present, the electrolytic copper foil is a method for producing copper foil by a continuous electrolytic method, is suitable for producing wide copper foil, and is also the most common method for producing copper foil on a large scale nowadays. In the manufacturing process of the lithium ion battery, copper foil is required to be used as a negative electrode material, and the copper foil used as the negative electrode of the lithium ion battery has very strict requirements, and the copper foil is required to have excellent performances such as conductivity, corrosion resistance, high normal temperature elongation, high tensile strength and low roughness. When the high-quality copper foil is prepared, the concentration of each substance component in the electrolyte is strictly controlled, and the real-time addition amount of the substance is strictly controlled to be maintained within an ideal preparation parameter range, so that the good uniformity of a continuously prepared product can be ensured; in the actual preparation process, due to various factors such as continuous consumption of substances in the electrolyte, current fluctuation and the like, the concentration of each substance component is always in a dynamic change state, the conventional manual sampling analysis generally takes dozens of minutes and has long time interval, so that the obtained test data cannot play an accurate guide role in real-time substance supplement. Therefore, it is necessary to provide an effective material concentration adjustment means for solving the above problems.
Disclosure of Invention
The invention aims to provide a material concentration adjusting system applied to an electrolytic copper foil, which is used for solving the problem that the material concentration in electrolyte is difficult to accurately adjust and control in the prior art.
In order to solve the technical problem, the invention provides a material concentration adjusting system applied to electrolytic copper foil, which comprises a copper dissolving tank, a buffer tank, a liquid purifying tank, a cooling device, an electrolytic cell group and a multi-stage additive filler unit; the copper dissolving tank, the buffer tank, the liquid purifying tank, the cooling device and the electrolytic cell group are sequentially communicated through pipelines, the liquid outlet of the electrolytic cell group is respectively communicated with the buffer tank and the multistage additive packing unit through pipelines, and the liquid outlet of the multistage additive packing unit is communicated with the liquid inlet of the liquid purifying tank through a pipeline.
Wherein the copper ion concentration of the solution in the copper dissolving tank is 95-110 g/L, the copper ion concentration of the solution in the buffer tank is 85-95 g/L, and the copper ion concentration of the solution in the clean liquid tank is 80-85 g/L.
Wherein, the solution in the copper dissolving tank is unidirectionally conveyed to the buffer tank through a pipeline.
Wherein, the solution is exchanged between the buffer tank and the liquid purifying tank in two directions through a pipeline.
Wherein, still be provided with filter equipment between buffer tank and the clean fluid reservoir, the solution in the buffer tank gets into the clean fluid reservoir behind filter equipment.
Wherein, the electrolytic cell group comprises a plurality of electrolytic cells which are connected in parallel, and the solution in the liquid purifying tank is unidirectionally conveyed to each electrolytic cell after passing through the cooling device; and the solution after electrolysis in the electrolytic cell is respectively and unidirectionally conveyed to the buffer tank and the multistage additive filler unit through pipelines.
The multi-stage additive filling unit comprises a first-stage additive filling tank and a second-stage additive filling tank, and the electrolytic cell group is sequentially communicated with the first-stage additive filling tank, the second-stage additive filling tank and the clean liquid tank through pipelines; mixing the solution after electrolysis in the electrolytic cell group and the additive in a primary additive filler tank to obtain primary additive mixed solution; and diluting the primary additive mixed solution in a secondary additive filling tank to obtain a secondary additive mixed solution, and refluxing the secondary additive to a clean solution tank.
And the additive online analyzers are arranged in the first-stage additive filler tank and the second-stage additive filler tank, and are used for analyzing the concentrations of the additives in the first-stage additive filler tank and the second-stage additive filler tank.
Preferably, the dilution ratio of the primary additive is 100-10000.
Wherein, copper ion on-line analyzers are arranged in the copper dissolving tank, the buffer tank and the liquid purifying tank.
The invention has the beneficial effects that: the invention provides a material concentration adjusting system applied to electrolytic copper foil, which is characterized in that the system is characterized in that a reasonable configuration mode among a copper dissolving tank, a buffer tank, a liquid purifying tank, a cooling device, an electrolytic cell group and a multi-stage additive filler unit is adopted, and an online analyzer is introduced, so that the real-time monitoring of the content of copper ions and additives in a solution is realized, the fluctuation range of the concentration of each component in the solution is greatly reduced, and the system plays an accurate guiding role in the real-time supplement of materials after electrolytic reaction; meanwhile, unreacted raw materials after electrolysis can be recycled, and the utilization rate of the raw materials is obviously improved.
Drawings
FIG. 1 is a schematic view showing the structure of an embodiment of a material concentration adjusting system for electrolytic copper foil according to the present invention;
in the figure: 1: a copper dissolving tank; 2: a buffer tank; 3: a liquid purifying tank; 4: a cooling device; 5: an electrolytic cell group; 51: an electrolytic cell; 6: a multi-stage additive packing unit; 61: a first-stage additive packing tank; 62: a secondary additive packing tank; 7: and (4) a filtering device.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
Referring to fig. 1, fig. 1 is a schematic structural view of an embodiment of a material concentration adjusting system applied to an electrolytic copper foil according to the present invention. The invention provides a material concentration adjusting system applied to electrolytic copper foil, which comprises a copper dissolving tank 1, a buffer tank 2, a liquid purifying tank 3, a cooling device 4, an electrolytic cell group 5 and a multi-stage additive filler unit 6, wherein the connection relationship among the components is described in detail respectively.
The copper dissolving tank 1, the buffer tank 2, the liquid purifying tank 3, the cooling device 4 and the electrolytic cell group 5 are sequentially communicated through pipelines, the liquid outlet of the electrolytic cell group 5 is respectively communicated with the buffer tank 2 and the multistage additive packing unit 6 through pipelines, and the liquid outlet of the multistage additive packing unit 6 is communicated with the liquid inlet of the liquid purifying tank 3 through a pipeline.
Specifically, the solution in the copper dissolving tank 1 is unidirectionally conveyed to the buffer tank 2 through a pipeline, and the solution is bidirectionally exchanged between the buffer tank 2 and the clean liquid tank 3 through a pipeline; preferably, still be provided with filter equipment 7 between buffer tank 2 and the clean fluid reservoir 3, the solution in the buffer tank 2 gets into the clean fluid reservoir after filter equipment 7, can realize from this that the solution is by the buffer tank 2 when flowing to clean fluid reservoir 3, makes the solution can reach the state of relative pureness and enters into clean fluid reservoir 3, and then the solution is by the reverse refluence of feed liquor pipe 3 to buffer tank 2 then need not again through filtering. In the embodiment, the concentration of copper ions in the solution in the copper dissolving tank 1 is preferably 95-110 g/L, the concentration of copper ions in the solution in the buffer tank 2 is preferably 85-95 g/L, and the concentration of copper ions in the solution in the clean liquid tank 3 is preferably 80-85 g/L; therefore, the mode that the copper ion concentration of the solution in the copper dissolving tank 1, the buffer tank 2 and the clean liquid tank 3 is in gradient distribution is formed, and the fluctuation interval of the copper ion concentration is gradually reduced, and the method aims to solve the problem that the concentration change amplitude is large when the high copper ion concentration solution in the copper dissolving tank 1 is mixed with the low copper ion concentration solution in the clean liquid tank 3 by arranging the buffer tank 2, and further reduce the concentration fluctuation amplitude of the low copper ion concentration solution in the clean liquid tank 3 when the low copper ion concentration solution is led out; and only the buffer tank 2 and the clean liquid tank 3 can carry out bidirectional solution exchange, so that the concentration fluctuation range can be further reduced, and the purity of the solution with high copper ion concentration in the copper dissolving tank 1 can be ensured. In addition, all be provided with copper ion on-line analyzer in dissolving copper jar 1, buffer tank 2, the clean fluid reservoir 3 to carry out real-time supervision to the copper concentration in each part container, in order to realize the accurate regulation and control of the copper concentration in each part container and keep the stability of solution copper ion concentration.
Specifically, the solution in the clean liquid tank 3 is also conveyed to the cooling device 4 through a pipeline in a unidirectional manner for cooling, and after cooling is completed, the solution is conveyed to the electrolytic cell group 5 in a unidirectional conveying manner, and certainly, the solution in the clean liquid tank 3 can be filtered again and then cooled, so that a purer solution is obtained for electrolysis. The electrolytic cell group 5 comprises a plurality of electrolytic cells 51 which are mutually connected in parallel, and the solution in the liquid purifying tank 3 is used as electrolyte after being cooled and is unidirectionally conveyed to each electrolytic cell 51 for electrolysis; the electrolyzed solution in each electrolytic cell 51 is unidirectionally conveyed to the buffer tank 2 through a pipeline on the one hand, and unidirectionally conveyed to the multistage additive filler unit 6 on the other hand, because the reduction range of the copper ion concentration in the electrolyzed solution is small, namely the copper ion concentration in the electrolyzed solution still maintains a high concentration level, most of the electrolyzed solution flows back to the buffer tank 2 to be integrated again to prepare electrolyte for use, and the other small part is conveyed to the multistage additive filler unit 6 as a solvent for dissolving additives, so that the use of raw materials can be saved, and the utilization rate of the raw materials is obviously improved.
Specifically, in this embodiment, the multistage additive filler unit 6 includes a first-stage additive filler tank 61 and a second-stage additive filler tank 62, and the liquid outlets of the electrolytic cell group 5 are collected by a pipeline and then sequentially communicated with the first-stage additive filler tank 61, the second-stage additive filler tank 62 and the liquid purification tank 3; the solution after electrolysis in the electrolytic cell group 5 and the additive are mixed in a first-stage additive filling tank 61 to obtain a primary additive mixed solution, then the primary additive mixed solution is diluted in a second-stage additive filling tank 62 to obtain a secondary additive mixed solution, the dilution ratio of the primary additive is preferably 100-10000, and the secondary additive flows back to the clean liquid tank 3 so as to continuously supplement the additive required by electrolysis. The additive on-line analyzer is arranged in each of the first-stage additive filler tank and the second-stage additive filler tank, and the additive on-line analyzer is used for analyzing the concentration of the additive in each of the first-stage additive filler tank and the second-stage additive filler tank, so that the supplement amount of the additive is kept in a stable state, the concentration of each component of the electrolyte is kept in a stable state in the subsequent continuous production process, and the concentration of each component is prevented from greatly fluctuating in the continuous reaction process. In the actual production process, the proportion of the additives required to be added is small, so that the uniformly mixed electrolyte is difficult to obtain by simply dissolving the additives and mixing the additives with the solution in the liquid purification tank 3, therefore, the embodiment executes two steps in the multistage additive filler unit 6, the additives are added into the primary additive filler tank 61 and are primarily mixed with the electrolyzed solution to obtain primary additive mixed solution, then the primary additive mixed solution is diluted in the secondary additive filler tank 62 to obtain secondary additive mixed solution, the concentration of the additives is reduced, the secondary additive mixed solution is closer to the component concentration of the electrolyte required in the actual electrolytic reaction, and at the moment, the secondary additive mixed solution is introduced into the liquid purification tank 3 to be mixed to obtain more uniform electrolyte.
In the present embodiment, the primary additive mixture is diluted only once, and in other embodiments, the number of times of dilution and the dilution ratio may be set appropriately according to actual conditions, and are not limited herein; in addition, the additive used may be activated carbon for purification, an organic substance for enhancing the flatness of the copper foil deposit, or other functional substances, and is not limited herein.
Further, based on the connection relationship of the material concentration adjusting system applied to the electrolytic copper foil, the working mode thereof is explained in detail. When the electrolytic copper foil is needed, the high copper ion concentration solution in the copper dissolving tank 1 is led into the buffer tank 2 in a single direction, the copper ion concentrations of the solution in the copper dissolving tank 1, the buffer tank 2 and the clean liquid tank 3 are sequentially set in a gradient reduction mode through the two-way solution exchange between the buffer tank 2 and the clean liquid tank 3, and the copper ion concentration in the solution is adjusted to a stable range in a small fluctuation range; the liquid purifying tank 3 receives the secondary additive mixed liquid from the secondary additive filling tank 62, and the secondary additive mixed liquid and the copper ion-containing solution are uniformly mixed to obtain electrolyte, and the electrolyte is conveyed to the cooling device 4 for cooling, and is respectively guided out to the plurality of electrolytic tanks 51 after cooling. When the copper foil is electrolyzed, the concentration of copper ions in the residual solution in the electrolytic tank 5 is reduced only by a small amplitude, and most of the copper ions are refluxed and guided to the buffer tank 2 so as to be mixed again to prepare electrolyte; the rest of the residual solution in the electrolytic tank 5 is conveyed to the first-stage additive filling tank 61 to be used as a solvent to dissolve the additive added into the first-stage additive filling tank 61, and the mixture is mixed to obtain a primary additive mixed solution; and then the primary additive mixed solution is guided into a secondary additive filling tank 62, a solvent is added for dilution, a secondary additive mixed solution is obtained after dilution, and the secondary additive mixed solution is guided out to a clean liquid tank 3 to continuously supplement the additive mixed solution for the preparation of the subsequent electrolyte. Because the first-stage additive filling tank 61 and the second-stage additive filling tank 62 are both provided with the online analyzers, the concentration of the additives in the first-stage additive filling tank and the second-stage additive filling tank can be respectively measured in real time, the amount of the additives to be supplemented in real time is determined according to the measurement result of the online analyzers, the high copper ion concentration solution in the copper dissolving tank 1 is injected into the additive tank 7 to be uniformly mixed, and then the high copper ion concentration solution is introduced into the clean liquid tank 3 to carry out the next round of operation; because copper ion on-line analyzers are arranged in the copper dissolving tank 1, the buffer tank 2 and the liquid purifying tank 3, the real-time supplement amount of copper ions can be determined according to the real-time copper ion concentration monitoring value, and therefore the real-time accurate adjustment operation of the copper ion concentration and the additive concentration is realized.
The invention provides a material concentration adjusting system applied to electrolytic copper foil, which is characterized in that the system is characterized in that a reasonable configuration mode among a copper dissolving tank, a buffer tank, a liquid purifying tank, a cooling device, an electrolytic cell group and a multi-stage additive filler unit is adopted, and an online analyzer is introduced, so that the real-time monitoring of the content of copper ions and additives in a solution is realized, the fluctuation range of the concentration of each component in the solution is greatly reduced, and the system plays an accurate guiding role in the real-time supplement of materials after electrolytic reaction; meanwhile, unreacted raw materials after electrolysis can be recycled, and the utilization rate of the raw materials is obviously improved.
The above-mentioned embodiments only express the embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A material concentration adjusting system applied to electrolytic copper foil is characterized by comprising a copper dissolving tank, a buffer tank, a liquid purifying tank, a cooling device, an electrolytic cell group and a multistage additive filler unit;
the copper dissolving tank, the buffer tank, the liquid purifying tank, the cooling device and the electrolytic cell group are sequentially communicated through pipelines, the liquid outlet of the electrolytic cell group is respectively communicated with the buffer tank and the multistage additive filling unit through pipelines, and the liquid outlet of the multistage additive filling unit is communicated with the liquid inlet of the liquid purifying tank through a pipeline.
2. The material concentration adjusting system applied to the electrolytic copper foil as claimed in claim 1, wherein the copper ion concentration of the solution in the copper dissolving tank is 95-110 g/L, the copper ion concentration of the solution in the buffer tank is 85-95 g/L, and the copper ion concentration of the solution in the clean solution tank is 80-85 g/L.
3. The material concentration adjusting system for electrolytic copper foil as claimed in claim 1, wherein the solution in the copper dissolving tank is unidirectionally transferred to the buffer tank through a pipe.
4. The material concentration adjusting system for electrolytic copper foil as claimed in claim 1, wherein the solution is exchanged between the buffer tank and the clean liquid tank bidirectionally through a pipe.
5. The material concentration regulating system applied to the electrolytic copper foil as set forth in claim 4, wherein a filtering device is further disposed between the buffer tank and the clean liquid tank, and the solution in the buffer tank enters the clean liquid tank after passing through the filtering device.
6. The material concentration regulating system for electrolytic copper foil as claimed in claim 1, wherein said electrolytic bath group comprises a plurality of electrolytic baths connected in parallel, and the solution in said clean liquid tank is unidirectionally transferred to each of said electrolytic baths after passing through said cooling means; and the solution after electrolysis in the electrolytic cell is respectively and unidirectionally conveyed to the buffer tank and the multi-stage additive filler unit through pipelines.
7. The material concentration adjusting system applied to electrolytic copper foil as set forth in claim 1, wherein the multistage additive filler unit comprises a primary additive filler tank and a secondary additive filler tank, and the electrolytic cell group is communicated with the primary additive filler tank, the secondary additive filler tank and the net liquid tank in sequence through pipes;
mixing the solution after electrolysis in the electrolytic cell group and an additive in the primary additive filler tank to obtain a primary additive mixed solution;
and diluting the primary additive mixed liquor in the secondary additive filling tank to obtain secondary additive mixed liquor, and refluxing the secondary additive to the liquid purifying tank.
8. The material concentration adjusting system for electrolytic copper foil as claimed in claim 7, wherein an additive on-line analyzer is provided in each of the first and second additive filler tanks, and the concentration of the additive in the first and second additive filler tanks is analyzed by the additive on-line analyzer.
9. The material concentration adjusting system for electrolytic copper foil as claimed in claim 7, wherein the dilution rate of the primary additive is 100 to 10000.
10. The material concentration regulating system applied to the electrolytic copper foil as set forth in claim 1, wherein the copper dissolving tank, the buffer tank and the clean liquid tank are all provided with an on-line copper ion analyzer.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011191384.1A CN112376086A (en) | 2020-10-30 | 2020-10-30 | Material concentration adjusting system applied to electrolytic copper foil |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011191384.1A CN112376086A (en) | 2020-10-30 | 2020-10-30 | Material concentration adjusting system applied to electrolytic copper foil |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113201771A (en) * | 2021-03-24 | 2021-08-03 | 九江德福科技股份有限公司 | Electrolyte copper ion concentration control system |
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| CN104801796A (en) * | 2015-04-13 | 2015-07-29 | 南京航空航天大学 | Electrolyte precise control system with real-time adjustable parameters and working method thereof |
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| CN204779875U (en) * | 2015-07-07 | 2015-11-18 | 灵宝华鑫铜箔有限责任公司 | It utilizes system to dissolve surplus temperature of copper jar |
| CN210826397U (en) * | 2020-04-15 | 2020-06-23 | 甘肃德福新材料有限公司 | Electrolytic foil-generating ion concentration stable control system |
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2020
- 2020-10-30 CN CN202011191384.1A patent/CN112376086A/en active Pending
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| CN204608184U (en) * | 2015-01-08 | 2015-09-02 | 河南红日铜箔科技有限公司 | A kind of additive system of giving birth in paper tinsel electrolysis production |
| CN104801796A (en) * | 2015-04-13 | 2015-07-29 | 南京航空航天大学 | Electrolyte precise control system with real-time adjustable parameters and working method thereof |
| CN204779875U (en) * | 2015-07-07 | 2015-11-18 | 灵宝华鑫铜箔有限责任公司 | It utilizes system to dissolve surplus temperature of copper jar |
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| CN113201771A (en) * | 2021-03-24 | 2021-08-03 | 九江德福科技股份有限公司 | Electrolyte copper ion concentration control system |
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