Ultrafine powder electrolysis device

Abstract

The utility model relates to the technical field of powder preparation, in particular to a superfine powder electrolyzer, which comprises an electrolytic bath, a head tank, a lower tank and a centrifugal machine, along the vertical direction, the head tank is higher than the electrolytic bath, and the electrolytic bath is higher than the lower tank; the head tank is communicated with the lower tank through a first pipeline, a first conveying pump is arranged on the first pipeline, the head tank is communicated with the electrolytic tank through a third pipeline, the top of the electrolytic tank is communicated with the lower tank through a fourth pipeline, the upper portion of the electrolytic tank is communicated with the lower tank through a fifth pipeline, and the lower portion of the electrolytic tank is communicated with the centrifugal machine through a sixth pipeline. The low-level tank, the high-level tank and the electrolytic tank are used for storing the electrolyte, the total volume of the electrolyte is increased, when the environment temperature changes, the temperature change of the electrolyte is slightly influenced by the environment, and the temperature of the electrolyte is better controlled; and after electrolysis is completed, unqualified powder is conveyed into a low tank, and qualified powder is conveyed into a centrifugal machine through a sixth pipeline for centrifugal separation.

Description

Technical Field

[0001] This utility model relates to the field of powder preparation technology, and in particular to an electrolysis device for ultrafine powder. Background Technology

[0002] In the field of materials preparation, electrolytic methods for preparing powder materials have attracted widespread attention and research due to their advantages in precisely controlling the composition, particle size, and morphology of powders. Through the electrolysis process, metal ions can be reduced into metal powders, or compounds can be synthesized, thereby meeting the needs of various fields for high-performance powder materials, such as electronics, chemicals, and energy industries.

[0003] However, existing equipment for electrolytic powder preparation faces numerous unresolved technical problems, severely hindering the further development and application of this technology. One key issue is the wide particle size distribution of the electrolyzed ultrafine powders. In practical applications, customers often have strict requirements for powder particle size to meet specific usage scenarios and performance needs. Typically, the required ultrafine powder particle size is between 2000 and 10000 mesh. However, existing electrolytic preparation equipment produces powders with significant particle size variations, with some reaching as low as 13000 mesh. Such excessively fine powders may lead to agglomeration and poor flowability in subsequent applications, failing to meet customers' specific particle size requirements. Existing equipment cannot effectively separate qualified and unqualified powders, making it difficult to remove unqualified powders mixed in the product. This not only reduces the overall quality and performance stability of the product but also increases the difficulty and cost of subsequent processing. For example, in applications with extremely stringent particle size requirements, the presence of unqualified powders may prevent the product from achieving expected performance indicators, thereby affecting the entire production process and the product's market competitiveness.

[0004] Furthermore, existing electrolysis equipment suffers from the technical challenge of uncontrollable electrolyte temperature. Electrolysis typically involves chemical reactions that generate heat, causing the electrolyte temperature to rise. Temperature variations significantly impact the rate of the electrolytic reaction, the morphology of the products, and their properties. Excessive temperature can trigger side reactions, reducing product purity and quality; conversely, insufficient temperature slows the reaction rate, decreasing production efficiency. Therefore, the inability to precisely control the electrolyte temperature severely affects electrolysis efficiency, leading to unstable product quality and failing to meet the consistency and stability requirements of industrial production.

[0005] In summary, existing electrolytic powder preparation equipment is significantly inadequate in separating qualified and unqualified powders and controlling the temperature of the electrolyte solution. There is an urgent need to develop a new electrolytic powder preparation technology or equipment to solve the above problems and meet the market demand for high-quality ultrafine powders. Utility Model Content

[0006] In order to solve the above-mentioned technical problems in the prior art, the present invention provides an electrolysis device for ultrafine powders.

[0007] The technical solution of this utility model to solve the above-mentioned technical problems is as follows:

[0008] This utility model provides an electrolysis device for ultrafine powders, including an electrolytic cell, a high-level cell, a low-level cell, and a centrifuge. Vertically, the high-level cell is higher than the electrolytic cell, and the electrolytic cell is higher than the low-level cell. The high-level cell and the low-level cell are connected by a pipeline, which is equipped with a transfer pump. The high-level cell and the electrolytic cell are connected by a pipeline, the top of the electrolytic cell is connected to the low-level cell by a pipeline, the upper part of the electrolytic cell is connected to the low-level cell by a pipeline, and the lower part of the electrolytic cell is connected to the centrifuge by a pipeline.

[0009] The electrolysis device for ultrafine powders provided by this invention uses a low-level tank, a high-level tank, and an electrolytic cell to store the electrolyte, thereby increasing the total volume of the electrolyte. This reduces the impact of environmental temperature changes, allowing for better temperature control and maintaining the electrolyte temperature consistently within the 20-25℃ range. This ensures effective electrolysis and improves product quality. After electrolysis, small-sized, substandard powders float on the electrolyte, while qualified powders (2000-10000 mesh) settle to the bottom of the electrolytic cell. Subsequent substandard powders are transported to the low-level tank via pipeline five, while qualified powders and electrolytes are transported to a centrifuge via pipeline six for centrifugal separation to obtain qualified powders.

[0010] Based on the above technical solution, the present invention can also be improved in the following ways:

[0011] Furthermore, valves are installed on pipelines three, four, five, and six.

[0012] The beneficial effect of adopting the above-mentioned further technical solution is that the directional flow of electrolyte is achieved by opening and closing the valves. Specifically, firstly, electrolyte is added to the low-level tank, and the first transfer pump is turned on, so that the electrolyte in the low-level tank is pumped to the high-level tank through pipeline one. During this process, as the electrolyte in the low-level tank flows to the high-level tank, electrolyte is continuously replenished to the low-level tank, so that the electrolyte in both the low-level tank and the high-level tank maintains a certain liquid level. Then, the valve on pipeline three is opened, so that the electrolyte in the high-level tank flows to the electrolytic cell. As the electrolyte continuously flows to the electrolytic cell, the valves on pipelines five and six are closed, and the valve on pipeline four is opened. As the electrolyte level in the electrolytic cell rises, the electrolyte flows back to the low-level tank through pipeline four to prevent the electrolyte in the electrolytic cell from overflowing. During this process, electrolysis... Ultrafine powder is prepared by electrolysis in the cell. During electrolysis, the powder adheres to the cathode. The powder is scraped off the cathode manually at fixed intervals (10 minutes). If the scraping is too frequent, the resulting powder particles will be too fine; if the scraping is infrequent, the powder will agglomerate and the particle size will be too large. Therefore, the scraping cycle must be controlled. After electrolysis, the valves on the first and third pipelines are closed, and the electrolyte in the electrolytic cell is in a static state. After static settling, the qualified powder settles to the bottom of the electrolytic cell, while the unqualified powder floats on the upper layer of the electrolyte. The valve on the fifth pipeline is opened, and the upper layer of electrolyte in the electrolytic cell carries the unqualified powder into the lower tank. Then, the valve on the sixth pipeline is opened, and the lower layer of electrolyte in the electrolytic cell carries the qualified powder through the sixth pipeline into the centrifuge for centrifugal separation.

[0013] Furthermore, the first pipeline is connected to the bottom of the low-level tank and is used to transport the electrolytic cells in the low-level tank to the high-level tank; the top of the high-level tank is connected to the low-level tank through the second pipeline.

[0014] The beneficial effects of adopting the above-mentioned further technical solution are as follows: it enables the electrolyte in the low-level tank to be transported to the high-level tank. If the electrolyte level in the high-level tank rises to a certain level, the electrolyte will flow back to the low-level tank through pipeline two to prevent electrolyte overflow. Under normal circumstances, the electrolyte in the high-level tank will not flow directly to the low-level tank. When the power of the first transfer pump is turned up high, the electrolyte entering the high-level tank from the low-level tank will be more than the electrolyte flowing from the high-level tank to the electrolytic cell. Only then will the electrolyte in the high-level tank flow to the low-level tank through pipeline two, thereby preventing electrolyte overflow from the high-level tank.

[0015] Furthermore, the top of the side wall of the electrolytic cell is provided with a liquid outlet one, and the side wall of the electrolytic cell is also provided with a liquid outlet two and a liquid outlet three. In the vertical direction, the height of the liquid outlet one is higher than the height of the liquid outlet two, and the height of the liquid outlet three is lower than the height of the liquid outlet two.

[0016] Furthermore, the first liquid outlet is connected to the fourth pipeline, the second liquid outlet is connected to the fifth pipeline, and the third liquid outlet is connected to the sixth pipeline.

[0017] The beneficial effects of adopting the above-mentioned further technical solution are as follows: by setting an outlet one at the top of the side wall of the electrolytic cell, as the electrolyte enters the electrolytic cell from the high-level tank, the electrolyte in the electrolytic cell gradually rises. When it rises to outlet one, the electrolyte flows back into the low-level tank, preventing the electrolyte in the electrolytic cell from overflowing. After electrolysis, it is ensured that the upper layer of electrolyte in the electrolytic cell carries the unqualified powder into the low-level tank through outlet two, and the lower layer of electrolyte in the electrolytic cell carries the qualified powder into the centrifuge through outlet three.

[0018] Furthermore, it also includes a liquid storage tank and a wastewater storage tank. The bottom of the centrifuge is connected to the liquid storage tank through pipe seven, the liquid storage tank is connected to the low-level tank through pipe eight, the liquid storage tank is connected to the wastewater storage tank through pipe nine, and a second delivery pump is provided at the outlet of the liquid storage tank.

[0019] Furthermore, valves are installed on pipelines seven, eight, and nine.

[0020] The beneficial effect of adopting the above-mentioned further technical solution is that during the centrifugation process, the separated electrolyte is temporarily stored in the storage tank through pipeline seven, and then the valve of pipeline eight and the transfer pump two are opened, and the valve on pipeline nine is closed to transfer the electrolyte in the storage tank to the low-level tank.

[0021] Furthermore, the centrifuge is connected to a pipeline for introducing pure water into the centrifuge.

[0022] The beneficial effects of adopting the above-mentioned further technical solution are as follows: the ultrafine powder is cleaned by passing pure water through it. After the cleaning is completed, the cleaning wastewater flows into the storage tank. The valve on pipeline nine is opened, the valve on pipeline eight is closed, and the transfer pump two is turned on to pump the cleaning wastewater in the storage tank into the wastewater storage tank.

[0023] Furthermore, the bottom of the high-level tank is 100-300cm higher than the top of the electrolytic cell, and the bottom of the electrolytic cell is 10-30cm higher than the top of the low-level tank.

[0024] Furthermore, the bottom of the high-level tank is 200cm higher than the top of the electrolytic cell, and the bottom of the electrolytic cell is 20cm higher than the top of the low-level tank.

[0025] Compared with the prior art, the present invention has the following technical effects:

[0026] The electrolysis device for ultrafine powders provided by this utility model uses a low-level tank, a high-level tank, and an electrolysis tank to store the electrolyte, which increases the total volume of the electrolyte. When the ambient temperature changes, the temperature change of the electrolyte is less affected by the environment, and the electrolyte temperature can be better controlled. The electrolyte temperature is always maintained within the range of 20-25℃, thereby ensuring the electrolysis effect and improving the product quality.

[0027] The low-level tank is used to temporarily store electrolyte, that is, to replenish the electrolyte when it is insufficient in the electrolytic cell, and to hold the excess electrolyte when it is excessive. The high-level tank serves as a buffer for the low-level tank. The electrolyte in the low-level tank is first pumped to the high-level tank by the transfer pump, and then the opening and closing of the valve on the pipeline controls the electrolyte to flow evenly into the electrolytic cell. The wastewater storage tank is used to store wastewater (wastewater generated during cleaning of the electrolytic cell, low-level tank, high-level tank, silver powder, etc. is stored here and then transported to the wastewater treatment workshop). The centrifuge is used to clean and spin dry the ultrafine silver powder.

[0028] After electrolysis, small-sized and unqualified powder floats on the electrolyte, while qualified powder of 2000-10000 mesh settles to the bottom of the electrolytic cell. Subsequently, the unqualified powder is transported to the low-level tank along with the electrolyte through pipeline five, and the qualified powder and electrolyte are transported to the centrifuge through pipeline six for centrifugal separation to obtain qualified powder. Attached Figure Description

[0029] Figure 1 This diagram shows a structural schematic of the electrolysis device for ultrafine powder according to an embodiment of the present invention;

[0030] Figure label:

[0031] 1. Electrolytic cell; 2. High-level tank; 3. Low-level tank; 4. Centrifuge; 5. Storage tank; 6. Wastewater storage tank; 7. Pipeline 1; 8. Pipeline 2; 9. Pipeline 3; 10. Pipeline 4; 11. Pipeline 5; 12. Pipeline 6; 13. Pipeline 7; 14. Pipeline 8; 15. Pipeline 9; 16. Transfer pump 1; 17. Transfer pump 2; 18. Pipeline 10. Detailed Implementation

[0032] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. Although the description of this utility model will be presented in conjunction with preferred embodiments, this does not mean that the features of this utility model are limited to this embodiment. On the contrary, the purpose of describing the utility model in conjunction with the embodiments is to cover other options or modifications that may be derived based on the claims of this utility model. To provide a deep understanding of this utility model, many specific details will be included in the following description. This utility model may also be implemented without using these details. Furthermore, to avoid confusion or obscuring the focus of this utility model, some specific details will be omitted in the description. It should be noted that, without conflict, the embodiments and features in the embodiments of this utility model can be combined with each other.

[0033] See Figure 1 An electrolysis device for ultrafine powder includes an electrolytic cell 1, a high-level tank 2, a low-level tank 3, and a centrifuge 4. Vertically, the height of the high-level tank 2 is higher than that of the electrolytic cell 1, and the height of the electrolytic cell 1 is higher than that of the low-level tank 3. The high-level tank 2 and the low-level tank 3 are connected by a pipeline 7, on which a transfer pump 16 is installed. The high-level tank 2 and the electrolytic cell 1 are connected by a pipeline 9. The top of the electrolytic cell 1 is connected to the low-level tank 3 by a pipeline 10. The upper part of the electrolytic cell 1 is connected to the low-level tank 3 via pipe 5 11, and the lower part of the electrolytic cell 1 is connected to the centrifuge 4 via pipe 6 12; valves are provided on pipes 3 9, 4 10, 5 11, and 6 12; pipe 1 7 is connected to the bottom of the low-level tank 3 and is used to transport the electrolyte in the low-level tank 3 to the high-level tank 2; the top of the high-level tank 2 is connected to the low-level tank 3 via pipe 2 8; an outlet is provided on the top of the side wall of the electrolytic cell 1. The side wall of centrifuge 4 is also provided with outlet 2 and outlet 3. Vertically, outlet 1 is higher than outlet 2, and outlet 3 is lower than outlet 2. Outlet 1 is connected to pipe 4 10, outlet 2 is connected to pipe 5 11, and outlet 3 is connected to pipe 6 12. The centrifuge also includes a storage tank 5 and a wastewater storage tank 6. The bottom of centrifuge 4 is connected to the storage tank 5 via pipe 7 13. The liquid storage tank 5 is connected to the low-level tank 3 via pipe 8 14, and the liquid storage tank 5 is connected to the wastewater storage tank 6 via pipe 9 15. A transfer pump 2 17 is provided at the outlet of the liquid storage tank 5. Valves are provided on pipes 7 13, 8 14, and 9 15. The centrifuge 4 is connected to pipe 10 18 for introducing pure water into the centrifuge 4. The bottom of the high-level tank 2 is 200cm higher than the top of the electrolytic cell 1, and the bottom of the electrolytic cell 1 is 20cm higher than the top of the low-level tank 3.

[0034] The powder is silver powder. Qualified silver powder with a particle size of 2000-10000 mesh is prepared by controlling the electrolysis conditions. After electrolysis, a small portion of unqualified silver powder with a particle size greater than 10000 mesh will appear. By setting up a low-level tank 3, the qualified silver powder is separated from the unqualified silver powder. At the same time, after the electrolysis device has been working for a period of time, it needs to be manually processed or the electrolyte replaced periodically to ensure electrolysis efficiency and effect.

[0035] The transfer pump 16 is equipped with a low liquid level limit. When the liquid level in the low level tank 3 is too low and the transfer pump 16 cannot draw electrolyte, an alarm will be triggered or the power will be cut off directly to prevent the transfer pump 16 from running dry. At the same time, it ensures that both the low level tank 3 and the high level tank 2 contain electrolyte, avoiding the situation where only the high level tank 2 has liquid, thus ensuring the electrolysis effect.

[0036] During electrolysis, silver powder adheres to the cathode. The silver powder is scraped off the cathode manually at fixed intervals (10 minutes). If the scraping is too frequent, the produced silver powder particles will be too fine; if the scraping is infrequent, the silver powder will clump together and the particle size will be too large. Therefore, the scraping cycle must be controlled. During electrolysis, the electrolyte is constantly circulating. During scraping, most of the silver powder falls to the bottom of electrolytic cell 1. After electrolysis stops, the electrolyte in electrolytic cell 1 is in a static state. This static state is to allow more qualified silver powder to fall to the bottom of electrolytic cell 1 for easy collection later.

[0037] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An electrolysis device for ultrafine powders, characterized in that, The system includes an electrolytic cell, a high-level tank, a low-level tank, and a centrifuge. Vertically, the high-level tank is higher than the electrolytic cell, and the electrolytic cell is higher than the low-level tank. The high-level tank and the low-level tank are connected by a pipeline, which is equipped with a transfer pump. The high-level tank and the electrolytic cell are connected by a pipeline, which is also connected by a pipeline. The top of the electrolytic cell is connected to the low-level tank by a pipeline, which is connected to the upper part of the electrolytic cell by a pipeline, which is connected to the low-level tank by a pipeline, which is connected to the lower part of the electrolytic cell by a pipeline, which is connected to the centrifuge by a pipeline.

2. The electrolysis device for ultrafine powders according to claim 1, characterized in that, Valves are installed on pipelines three, four, five, and six.

3. The electrolysis device for ultrafine powders according to claim 1, characterized in that, Pipeline 1 is connected to the bottom of the low-level tank and is used to transport the electrolytic cells in the low-level tank to the high-level tank; the top of the high-level tank is connected to the low-level tank through pipe 2.

4. The electrolysis device for ultrafine powders according to claim 1, characterized in that, The electrolytic cell has a liquid outlet 1 at the top of its side wall, and a liquid outlet 2 and a liquid outlet 3 on its side wall. In the vertical direction, the height of the liquid outlet 1 is higher than the height of the liquid outlet 2, and the height of the liquid outlet 3 is lower than the height of the liquid outlet 2.

5. The electrolysis device for ultrafine powders according to claim 4, characterized in that, The first liquid outlet is connected to the fourth pipe, the second liquid outlet is connected to the fifth pipe, and the third liquid outlet is connected to the sixth pipe.

6. The electrolysis device for ultrafine powders according to claim 1, characterized in that, It also includes a liquid storage tank and a wastewater storage tank. The bottom of the centrifuge is connected to the liquid storage tank through pipe seven. The liquid storage tank is connected to the low-level tank through pipe eight. The liquid storage tank is connected to the wastewater storage tank through pipe nine. A second transfer pump is provided at the outlet of the liquid storage tank.

7. The electrolysis device for ultrafine powders according to claim 6, characterized in that, Valves are installed on pipelines seven, eight, and nine.

8. The electrolysis device for ultrafine powders according to claim 1, characterized in that, The centrifuge is connected to a pipeline for introducing pure water into the centrifuge.

9. The electrolysis apparatus for ultrafine powders according to any one of claims 1 to 8, characterized in that, The bottom of the high-level tank is 100-300cm higher than the top of the electrolytic cell, and the bottom of the electrolytic cell is 10-30cm higher than the top of the low-level tank.

10. The electrolysis device for ultrafine powders according to claim 9, characterized in that, The bottom of the high-level tank is 200cm higher than the top of the electrolytic cell, and the bottom of the electrolytic cell is 20cm higher than the top of the low-level tank.

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