High-purity tin electrolysis device

Abstract

The utility model relates to the technical field of tin purification, and provides a high-purity tin electrolyzer which comprises a purification electrolytic bath and a liquid making electrolytic bath, a plurality of first anode plates and first cathode plates are arranged in the purification electrolytic bath, and a plurality of second anode plates and second cathode plates are arranged in the liquid making electrolytic bath. A liquid outlet of the liquid making electrolytic bath is connected with the purification electrolytic bath through a first circulating pipe, and an acid-resistant pump is arranged on the first circulating pipe; a liquid outlet of the purification electrolytic bath is connected with the liquid making electrolytic bath through a second circulating pipe; the first anode plate, the second cathode plate and the second anode plate are tin plates, and the second cathode plate is separated from the second anode plate through an anionic membrane. The divalent tin ions are continuously provided in the liquid making electrolytic bath and are pumped into the purification electrolytic bath through the acid-resistant pump, so that the concentration of the divalent tin ions in the purification electrolytic bath is ensured, and the purpose of ensuring the stable production efficiency is achieved.

Description

Technical Field

[0001] This application belongs to the field of tin purification technology, and more specifically, relates to a high-purity tin electrolysis device. Background Technology

[0002] Currently, high-purity tin has reached a relatively mature stage and is increasingly being promoted in various fields, extending to a variety of products and services such as terminal equipment, special services, and value-added services. The product series has more than 20 types, which can comprehensively cover the fields of finance, transportation, and electronics. The era of comprehensive application of high-purity tin has arrived. Tin compounds are widely used in high-tech fields, mainly in semiconductors and superalloys. Among them, tin oxide is one of the raw materials for making ITO conductive thin films. As the application of tin and tin compounds becomes more and more widespread, its annual output is also increasing.

[0003] Existing tin purification technology uses an electrolysis device, which includes an electrolytic cell, an anode, and a cathode. The electrolytic cell is filled with an electrolyte containing divalent tin ions. By passing an electric current through the anode and cathode, the divalent tin ions are deposited and purified on the cathode. However, as the electrolysis time increases, the concentration of divalent tin ions decreases, leading to a gradual decrease in purification efficiency. In the later stages, the electrolyte needs to be recycled, which seriously affects production efficiency. Utility Model Content

[0004] To address the shortcomings of the prior art, the purpose of this application is to provide a high-purity tin electrolysis device that continuously replenishes divalent tin ions and circulates the electrolyte, thereby ensuring production efficiency.

[0005] To achieve the above objectives, the technical solution adopted in this application is as follows: a high-purity tin electrolysis device is provided, comprising: a purification electrolysis cell and a solution-forming electrolysis cell. The purification electrolysis cell is provided with a plurality of first anode plates and a first cathode plate. The solution-forming electrolysis cell is provided with a plurality of second anode plates and a second cathode plate. The outlet of the solution-forming electrolysis cell is connected to the purification electrolysis cell through a first circulation pipe, and an acid-resistant pump is provided on the first circulation pipe. The outlet of the purification electrolysis cell is connected to the solution-forming electrolysis cell through a second circulation pipe. The first anode plate, the second cathode plate, and the second anode plate are all tin plates. The second cathode plate is separated from the second anode plate by an anion exchange membrane.

[0006] In one embodiment, the first circulation pipe is provided with a high-level tank, the height of which is higher than the height of the purification electrolytic cell. The acid-resistant pump pumps the electrolyte into the high-level tank, and the electrolyte in the high-level tank flows into the purification electrolytic cell by gravity.

[0007] In one embodiment, a plate and frame filter press is provided on the second circulation pipe, and the electrolyte in the purification electrolytic cell enters the plate and frame filter press by overflow. The height of the plate and frame filter press is higher than the height of the electrolyte-making electrolytic cell.

[0008] In one embodiment, each of the first anode plates is wrapped with a filter cloth bag.

[0009] In one embodiment, the first cathode plate is a titanium plate.

[0010] In one embodiment, the first anode plate is a 3N tin plate or a 4N tin plate.

[0011] In one embodiment, both the second anode plate and the second cathode plate are 5N tin plates.

[0012] In one embodiment, the purification electrolytic cell, the liquid-forming electrolytic cell, the first circulation pipe, the second circulation pipe, and the high-level tank are all made of high-purity PP material.

[0013] The advantages of the high-purity tin electrolysis apparatus provided in this application are as follows:

[0014] 1. By continuously supplying divalent tin ions in the liquid preparation electrolytic cell and pumping them into the purification electrolytic cell through an acid-resistant pump, the concentration of divalent tin ions in the purification electrolytic cell is ensured, thereby achieving the goal of ensuring stable production efficiency.

[0015] 2. The anion exchange membrane can effectively prevent divalent tin ions from being deposited at the second cathode plate, thereby ensuring that divalent tin ions can be replenished to the purification electrolytic cell for purification when the electrolyte is circulating.

[0016] 3. The filter bags and plate and frame filter press can effectively filter out solid impurities generated during the electrolysis process, such as tetravalent tin ion hydrolysis precipitate and some small particle anode mud. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the connection structure of the high-purity tin electrolysis device provided in the embodiments of this application.

[0019] The following are the labeling elements in the figure:

[0020] 1. Computer; 2. High-frequency switching power supply; 3. First anode plate; 4. First cathode plate; 5. Filter bag; 6. Purification electrolytic cell; 7. Plate and frame filter press; 8. Second anode plate; 9. Anion exchange membrane; 10. Second cathode plate; 11. Liquid preparation electrolytic cell; 12. Acid-resistant pump; 13. High-level tank. Detailed Implementation

[0021] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0022] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0023] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0024] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0025] like Figure 1 As shown, a high-purity tin electrolysis apparatus provided in this application embodiment will now be described. This high-purity tin electrolysis apparatus includes: a purification electrolysis cell 6 and a solution-forming electrolysis cell 11. The purification electrolysis cell 6 is provided with a plurality of alternately arranged first anode plates 3 and first cathode plates 4. The solution-forming electrolysis cell 11 is provided with a plurality of alternately arranged second anode plates 8 and second cathode plates 10. The first anode plates 3, first cathode plates 4, second anode plates 8, and second cathode plates 10 are all electrically connected to a high-frequency switching power supply 2, which is electrically connected to a computer 1.

[0026] In this embodiment, the outlet of the electrolyte-generating electrolytic cell 11 is connected to the purification electrolytic cell 6 via a first circulation pipe. An acid-resistant pump 12 is installed on the first circulation pipe to circulate the electrolyte. The outlet of the purification electrolytic cell 6 is connected to the electrolyte-generating electrolytic cell 11 via a second circulation pipe. The electrolyte-generating electrolytic cell 11 continuously generates divalent tin ions, which flow into the purification electrolytic cell 6 with the circulating electrolyte to replenish the concentration of divalent tin ions in the purification electrolytic cell 6. The acid-resistant pump 12 is also electrically connected to the computer 1, allowing control of the electrolyte circulation.

[0027] In this embodiment, the first anode plate 3, the second cathode plate 10, and the second anode plate 8 are all tin plates. The second cathode plate 10 is separated from the second anode plate 8 by an anion exchange membrane 9. The first anode plate 3 and the second anode plate 8 produce divalent tin ions during electrolysis. The purpose of the anion exchange membrane 9 is to prevent divalent tin ions from depositing at the second cathode plate 10, thereby ensuring a high concentration of divalent tin ions in the electrolyte of the electrolyte preparation electrolytic cell 11. This allows the electrolyte to replenish divalent tin ions in the purification electrolytic cell 6 after entering the purification electrolytic cell 6.

[0028] In this embodiment, a high-level tank 13 is provided on the first circulation pipe. The height of the high-level tank 13 is higher than the height of the purification electrolytic cell 6. The acid-resistant pump 12 pumps the electrolyte into the high-level tank 13. The electrolyte in the high-level tank 13 flows into the purification electrolytic cell 6 by gravity. The purpose is to reduce the fluidity of the electrolyte in the purification electrolytic cell 6.

[0029] In this embodiment, a plate and frame filter press 7 is provided on the second circulation pipe. The electrolyte in the purification electrolytic cell 6 enters the plate and frame filter press 7 by overflow. The height of the plate and frame filter press 7 is higher than the height of the electrolyte-making electrolytic cell 11. The plate and frame filter press 7 is used to remove solid impurities generated during the electrolysis process to avoid solid impurities affecting the purification efficiency. The filtered electrolyte then enters the electrolyte-making electrolytic cell 11.

[0030] In this embodiment, each of the first anode plates 3 is wrapped with a filter bag 5, which is used to collect the anode mud generated during the electrolysis process.

[0031] In this embodiment, the first cathode plate 4 is a titanium plate. Preferably, the first anode plate 3 is a 3N tin plate or a 4N tin plate; the second anode plate 8 and the second cathode plate 10 are both 5N tin plates.

[0032] To ensure the purity of the electrolysis, in this embodiment, the purification electrolytic cell 6, the liquid-making electrolytic cell 11, the first circulation pipe, the second circulation pipe, and the high-level tank are all made of high-purity PP material.

[0033] The usage process of the high-purity tin electrolysis device provided in this embodiment is as follows:

[0034] The first step is to turn on the electrolyte electrolysis cell 11 and prepare 5N tin as the second cathode plate 10 and the second anode plate 8. The second cathode is separated from the second anode plate 8 by an anion exchange membrane 9.

[0035] The second step is to prepare the electrolyte and pump it into the high-level tank 13 using an acid-resistant pump 12.

[0036] The third step is to turn on the purification electrolytic cell 6, using a 3N or 4N tin plate as the first anode plate 3 and a titanium plate as the first cathode plate 4. The first anode plate 3 is wrapped with a filter bag 5, and the electrolyte in the high-level tank 13 flows into the purification electrolytic cell 6 as the electrolyte for tin purification.

[0037] In the fourth step, the electrolyte overflows from the purification electrolytic cell 6 to the plate and frame filter press 7 for filtration, and then flows to the electrolyte-making electrolytic cell 11 for continuous replenishment of divalent tin ions.

[0038] The fifth step involves replenishing the electrolyte with divalent tin ions and then continuously pumping it into the high-level tank 13 via the acid-resistant pump 12 for circulation.

[0039] The high-purity tin electrolysis device provided in this embodiment is characterized by simple operation and fully automated operation. It generates no pollutants, waste, or smoke during operation, thus meeting environmental protection requirements. The production efficiency remains consistent throughout the entire tin purification process.

[0040] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A high-purity tin electrolysis apparatus, characterized in that, include: The purification electrolytic cell (6) and the liquid-making electrolytic cell (11) are provided. The purification electrolytic cell (6) is provided with a plurality of first anode plates (3) and first cathode plates (4). The liquid-making electrolytic cell (11) is provided with a plurality of second anode plates (8) and second cathode plates (10). The outlet of the liquid-making electrolytic cell (11) is connected to the purification electrolytic cell (6) through a first circulation pipe. An acid-resistant pump (12) is provided on the first circulation pipe. The outlet of the purification electrolytic cell (6) is connected to the liquid-making electrolytic cell (11) through a second circulation pipe. The first anode plate (3), the second cathode plate (10) and the second anode plate (8) are all tin plates. The second cathode plate (10) is separated from the second anode plate (8) by an anion exchange membrane (9).

2. The high-purity tin electrolysis apparatus as described in claim 1, characterized in that: The first circulation pipe is provided with a high-level tank (13), the height of which is higher than the height of the purification electrolytic cell (6). The acid-resistant pump (12) pumps the electrolyte into the high-level tank (13), and the electrolyte in the high-level tank (13) flows into the purification electrolytic cell (6) by gravity.

3. The high-purity tin electrolysis apparatus as described in claim 2, characterized in that: The second circulation pipe is equipped with a plate and frame filter press (7). The electrolyte in the purification electrolytic cell (6) enters the plate and frame filter press (7) by overflow. The height of the plate and frame filter press (7) is higher than the height of the liquid-making electrolytic cell (11).

4. The high-purity tin electrolysis apparatus as described in claim 3, characterized in that: Each of the first anode plates (3) is wrapped with a filter cloth bag (5).

5. The high-purity tin electrolysis apparatus as described in claim 4, characterized in that: The first cathode plate (4) is a titanium plate.

6. The high-purity tin electrolysis apparatus as described in claim 5, characterized in that: The first anode plate (3) is a 3N tin plate or a 4N tin plate.

7. The high-purity tin electrolysis apparatus as described in claim 6, characterized in that: Both the second anode plate (8) and the second cathode plate (10) are 5N tin plates.

8. The high-purity tin electrolysis apparatus as described in claim 6, characterized in that: The purification electrolytic cell (6), the liquid-making electrolytic cell (11), the first circulation pipe, the second circulation pipe, and the high-level tank (13) are all made of high-purity PP material.

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