Purification and impurity removal system for high-purity electrolytic manganese metal production

Abstract

The utility model discloses a purification and impurity removal system for high-purity electrolytic manganese metal production, which comprises a transfer barrel, a first filter barrel, a second filter barrel, a third filter barrel, a lower main pipe and an upper main pipe, and the transfer barrel, the first filter barrel, the second filter barrel and the third filter barrel are respectively provided with an upper connecting pipe and a lower connecting pipe. The upper connecting pipes on the transfer barrel, the first filter barrel, the second filter barrel and the third filter barrel are all communicated with an upper main pipe in parallel; the lower connecting pipes on the transfer barrel, the first filter barrel, the second filter barrel and the third filter barrel are all communicated with a lower main pipe in parallel; filter screens and filter bags are arranged in the first filter barrel, the second filter barrel and the third filter barrel and used for filtering impurities in a solution, adsorption resin is additionally arranged in the second filter barrel and the third filter barrel, ions such as calcium and magnesium in the solution are filtered out through the second filter barrel, and heavy metal ions such as cobalt and nickel in the solution are filtered out through the third filter barrel; and through cooperation of opening and closing of the switching control valve and the power pump, reverse cleaning of the filter barrel is achieved, and the cleanliness of the filtering environment is further guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of electrolytic manganese production technology, specifically to a purification and impurity removal system for the production of high-purity electrolytic manganese metal. Background Technology

[0002] There are generally two methods for preparing metallic manganese: hydrometallurgy and pyrometallurgy. Industrially, electrolysis is the most common method. Commercially available electrolytic manganese is produced by electrolysis using a manganese sulfate-ammonium sulfate system. This method has a high impurity content. To eliminate the negative impact of impurity ions on current efficiency, additives such as selenium dioxide are added to the electrolyte. However, this further introduces impurities, leading to a decrease in the metallic manganese content and failing to meet the Mn≥99.9% requirement for the DJMnA grade of electrolytic manganese.

[0003] Chinese patent document (publication number: CN209397256U) discloses a continuous purification device for electrolytic manganese. The base has hydraulic rods at both ends at its bottom. A motor is fixedly connected to the upper surface of the base. The output ends of two motors are fixedly connected to one end of a drive shaft. Rotary wheels are fixedly connected to the side walls of the two drive shafts. Each rotary wheel is tightly fitted to the outer wall of the tank. A partition is fixedly installed in the middle of the inner cavity of the tank. An opening is provided on the side wall of the tank. One end of a connecting pipe is fixedly inserted into the inner wall of the opening on the left side of the tank. The other end of the connecting pipe is fixedly connected to the opening on the right side of the tank. An arc-shaped opening is provided in the middle of the connecting pipe. A filter device is slidably inserted into the inner wall of the arc-shaped opening. This device can effectively stir the solution, thereby improving the purification effect. It has a simple structure, is easy to operate, and can effectively improve the purification rate and purification effect.

[0004] In existing technologies, manganese sulfate solution is purified by hydrolysis and precipitation with sulfiding agents. The purification process is time-consuming and the purification effect is not good. During the electrolysis process, additives such as selenium dioxide need to be added to maintain normal electrolysis, which results in the product purity failing to meet the requirement of high-purity manganese Mn ≥ 99.9%. Utility Model Content

[0005] To address the shortcomings of existing technologies, this invention provides a purification and impurity removal system for the production of high-purity electrolytic manganese metal. The manganese sulfate solution is prepared and purified using conventional processes. To further and efficiently remove impurity ions from the solution and meet the solution purification requirements for high-purity manganese production, the purified manganese sulfate solution is introduced into this device.

[0006] Filter screens and filter bags are installed in the first, second, and third filter barrels to filter impurities in the solution. Adsorption resin is added to the second and third filter barrels, so that the second filter barrel filters out calcium and magnesium ions in the solution, and the third filter barrel filters out heavy metal ions such as cobalt and nickel. By switching the opening and closing of the control valve in conjunction with the power pump, the filter barrels are reverse-cleaned to further ensure the cleanliness of the filtration environment.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] A purification and impurity removal system for the production of high-purity electrolytic manganese metal includes a transfer tank, a first filter tank, a second filter tank, a third filter tank, a lower main pipe, and an upper main pipe. Each of the transfer tank, first filter tank, second filter tank, and third filter tank is equipped with an upper connecting pipe and a lower connecting pipe. The upper connecting pipes of the transfer tank, first filter tank, second filter tank, and third filter tank are all connected in parallel to the upper main pipe, and the lower connecting pipes of the transfer tank, first filter tank, second filter tank, and third filter tank are all connected in parallel to the lower main pipe. A liquid inlet pipe is provided at the top of the transfer tank, a liquid outlet is provided at one end of the upper main pipe, and a drain outlet is provided at the end of the lower main pipe. A bypass pipe connects the upper and lower main pipes. Control valves are provided on the bypass pipe, upper connecting pipe, lower connecting pipe, upper main pipe, and lower main pipe. A power pump is installed on the lower main pipe near the transfer tank. By switching the multiple control valves on and off in conjunction with the power pump, the solution in the system is purified and impurities removed, or the filter tanks are reverse-washed.

[0009] As a preferred technical solution of the present invention, the upper connecting pipe includes a first upper connecting pipe, a second upper connecting pipe, a third upper connecting pipe, a transfer tank upper connecting pipe, and a fourth upper connecting pipe; the lower connecting pipe includes a first lower connecting pipe, a second lower connecting pipe, a third lower connecting pipe, and a transfer tank lower connecting pipe; one end of the first lower connecting pipe is connected to the bottom of the first filter tank, and the other end of the first lower connecting pipe is connected to the lower main pipe; one end of the second lower connecting pipe is connected to the bottom of the second filter tank, and the other end of the second lower connecting pipe is connected to the lower main pipe; one end of the transfer tank lower connecting pipe is connected to the bottom of the transfer tank, and the other end of the transfer tank lower connecting pipe is connected to the lower main pipe.

[0010] As a preferred technical solution of the present invention, the bypass pipe includes a first bypass pipe, a second bypass pipe and a third bypass pipe. The two ends of the first bypass pipe, the second bypass pipe and the third bypass pipe are respectively connected to the lower main pipe and the upper main pipe. The first bypass pipe is arranged adjacent to the first filter barrel, the second bypass pipe is arranged adjacent to the second filter barrel, and the third bypass pipe is arranged adjacent to the third filter barrel.

[0011] As a preferred embodiment of the present invention, one end of the first upper pipe is connected to the top of the first filter barrel, and the other end of the first upper pipe is connected to the first bypass pipe; one end of the second upper pipe is connected to the top of the second filter barrel, and the other end of the second upper pipe is connected to the second bypass pipe; one end of the third upper pipe is connected to the top of the third filter barrel, and the other end of the third upper pipe is connected to the upper main pipe; one end of the transfer barrel upper pipe is connected to the top of the transfer barrel, and the other end of the transfer barrel upper pipe is connected to the first bypass pipe; one end of the fourth upper pipe is connected to the top of the second filter barrel, and the other end of the fourth upper pipe is connected to the third bypass pipe.

[0012] As a preferred technical solution of the present invention, at least two control valves are provided on the first bypass pipe, the second bypass pipe, and the third bypass pipe, and the two control valves are respectively located on both sides of the junction of the bypass pipe and the upper pipe.

[0013] As a preferred embodiment of the present invention, the first filter barrel, the second filter barrel, and the third filter barrel are all provided with filter bags and filter screens inside.

[0014] As a preferred embodiment of the present invention, both the second and third filter barrels are provided with adsorption resin.

[0015] As a preferred embodiment of the present invention, pressure gauges are provided at the top of the first filter barrel, the second filter barrel, and the third filter barrel, and observation ports are provided at the top of the first filter barrel, the second filter barrel, and the third filter barrel.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The purification and impurity removal system of this utility model is equipped with filter screens and filter bags in the first, second, and third filter barrels to filter impurities in the solution. Adsorption resin is added to the second and third filter barrels, so that the second filter barrel filters out calcium and magnesium ions in the solution, and the third filter barrel filters out heavy metal ions such as cobalt and nickel. Compared with the traditional precipitation method, this system adopts a multi-step impurity removal method, which has a better purification effect. By switching the opening and closing of the control valve and cooperating with the power pump, the filter barrels are reverse-cleaned to further ensure the cleanliness of the filtration environment and facilitate the purification and impurity removal effect.

[0018] 2. This utility model's system adopts a parallel design. The top and bottom of each filter tank are connected to the upper and lower main pipes via upper and lower connecting pipes, respectively, forming a complete circulation network. An inlet pipe is installed at the top of the transfer tank for the raw material liquid to enter, an outlet is installed at the end of the upper main pipe for the purified solution to be discharged, and a drain outlet is installed at the end of the lower main pipe for impurity discharge. A bypass pipe is installed between the upper and lower main pipes to assist in reverse cleaning. Control valves are installed on all pipelines, and a power pump is installed near the transfer tank on the lower main pipe. By using different combinations of control valve opening and closing in conjunction with the power pump, multiple operating modes can be achieved, including forward purification filtration of the solution, reverse cleaning of the filter tanks, and bypass operation of individual filter tanks, ensuring the continuity and efficiency of system operation. This system not only guarantees the purification effect of the manganese metal solution but also provides convenient equipment maintenance, enhancing the practicality of the purification and impurity removal system. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the purification and impurity removal system of this utility model;

[0020] In the diagram: 10. Transfer tank; 11. First filter tank; 12. Second filter tank; 13. Third filter tank; 14. Observation port; 15. Filter bag; 16. Filter screen; 17. First lower connecting pipe; 18. Second lower connecting pipe; 19. Third lower connecting pipe; 20. First upper connecting pipe; 21. Second upper connecting pipe; 22. Third upper connecting pipe; 23. Downstream main pipe; 24. Power pump; 25. Transparent pipe; 26. Control valve; 27. Liquid outlet; 28. Transfer tank upper connecting pipe; 29. ​​First bypass pipe; 30. Liquid inlet pipe; 31. Upstream main pipe; 32. Second bypass pipe; 33. Third bypass pipe; 34. Pressure gauge; 35. Transfer tank lower connecting pipe; 36. Fourth upper connecting pipe. Detailed Implementation

[0021] The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

[0022] Contents not described in detail in this specification are existing technologies known to those skilled in the art. In the description of this utility model, it should be understood that terms such as "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are used only for the convenience of describing this utility model and simplifying the description. They 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, and therefore should not be construed as limiting this utility model. Furthermore, terms such as "first," "second," and "third," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0023] Figure 1 As shown, a purification and impurity removal system for the production of high-purity electrolytic manganese metal includes a transfer tank 10, a first filter tank 11, a second filter tank 12, a third filter tank 13, a lower main pipe 23, and an upper main pipe 31. Each of the transfer tank 10, the first filter tank 11, the second filter tank 12, and the third filter tank 13 is equipped with an upper connecting pipe and a lower connecting pipe. The upper connecting pipes on the transfer tank 10, the first filter tank 11, the second filter tank 12, and the third filter tank 13 are all connected in parallel to the upper main pipe 31. The lower connecting pipes on the transfer tank 10, the first filter tank 11, the second filter tank 12, and the third filter tank 13 are all connected in parallel to the lower main pipe 31. The upper main pipe 23; the top of the transfer tank 10 is provided with an inlet pipe 30, one end of the upper main pipe 31 is provided with an outlet 27, and the end of the lower main pipe 23 is provided with a drain outlet; a bypass pipe is connected between the upper main pipe 31 and the lower main pipe 23, and control valves 26 are provided on the bypass pipe, the upper connecting pipe, the lower connecting pipe, the upper main pipe 31 and the lower main pipe 23, and a power pump 24 is provided on the lower main pipe 23 near the transfer tank 10; by switching on and off multiple control valves in conjunction with the power pump 24, the solution in the system is purified and impurities are removed or the filter tank is reverse-washed.

[0024] The purification and impurity removal system of this utility model is equipped with filter screens 15 and filter bags 16 in the first filter barrel 11, the second filter barrel 12, and the third filter barrel 13 to filter impurities in the solution. Adsorption resin is added to the second filter barrel 12 and the third filter barrel 13, so that the second filter barrel 12 filters out calcium and magnesium ions in the solution, and the third filter barrel 13 filters out heavy metal ions such as cobalt and nickel in the solution. Compared with the traditional precipitation method, this system adopts a multi-step impurity removal method, which has a better purification effect. By switching the opening and closing of the control valve and cooperating with the power pump, the filter barrels are reverse-cleaned to further ensure the cleanliness of the filtration environment and facilitate the purification and impurity removal effect.

[0025] The system adopts a parallel design. The top and bottom of each filter cartridge are connected to the upper main pipe 31 and lower main pipe 23 via upper and lower connecting pipes, respectively, forming a complete circulation network. The transfer tank 10 has an inlet pipe 30 at its top for raw material liquid entry, an outlet 27 at the end of the upper main pipe 31 for purified solution discharge, and a drain outlet at the end of the lower main pipe 23 for impurity discharge. A bypass pipe is installed between the upper main pipe 31 and the lower main pipe 23 to assist in backwashing. Control valves 26 are installed on all pipelines, and a power pump 24 is installed on the lower main pipe 23 near the transfer tank 10. By different combinations of opening and closing the control valves 26 and cooperating with the power pump 24, multiple operating modes can be achieved, including forward purification filtration of the solution, backwashing of the filter cartridges, and bypass operation of individual filter cartridges, ensuring the continuity and efficiency of system operation. This system not only guarantees the purification effect of the manganese solution but also provides convenient equipment maintenance, enhancing the practicality of the purification and impurity removal system.

[0026] Further, the upper connecting pipe includes a first upper connecting pipe 20, a second upper connecting pipe 21, a third upper connecting pipe 22, and a transfer tank upper connecting pipe 28; the lower connecting pipe includes a first lower connecting pipe 17, a second lower connecting pipe 18, a third lower connecting pipe 19, a transfer tank lower connecting pipe 35, and a fourth upper connecting pipe 36; one end of the first lower connecting pipe 17 is connected to the bottom of the first filter tank 11, and the other end of the first lower connecting pipe 17 is connected to the lower main pipe 23; one end of the second lower connecting pipe 18 is connected to the bottom of the second filter tank 12, and the other end of the second lower connecting pipe 18 is connected to the lower main pipe 23; one end of the third lower connecting pipe 19 is connected to the bottom of the third filter tank 13, and the other end of the third lower connecting pipe 19 is connected to the lower main pipe 23; one end of the transfer tank lower connecting pipe 35 is connected to the bottom of the transfer tank 10, and the other end of the transfer tank lower connecting pipe 35 is connected to the lower main pipe 23.

[0027] Among them, the end of the lower main pipe 23 near the transfer tank 10 is the sewage outlet. A control valve is installed at the sewage outlet. When cleaning is required, the sewage in the system is discharged from the sewage outlet by opening the control valve.

[0028] An inlet pipe 30 is installed at the top of the transfer tank 10. The inlet pipe 30 can be filled with clean water, acid or alkali solution or solution to be purified.

[0029] During the initial purification of the target solution, the target solution is first injected into the transfer tank 10 through the inlet pipe 30, and then purified by passing through three filter tanks in sequence. When entering the first filter tank 11, the control valves on the lower connecting pipe 35 and the first lower connecting pipe 17 of the transfer tank are opened, and the control valve on the lower main pipe 23 connected between the lower connecting pipe 35 and the first lower connecting pipe 17 of the transfer tank is opened. The power pump 24 is then turned on, so that the target solution inside the transfer tank 10 enters the first filter tank 11 after passing through the lower connecting pipe 35, the lower main pipe 23 and the first lower connecting pipe 17 of the transfer tank. The target solution enters from the bottom of the first filter tank 11, passes through the filter screen 16 and the filter bag 15, and then flows out from the first upper connecting pipe 20 at the top of the first filter tank 11. The outflowing solution passes through the upper main pipe 31 and can either flow into the transfer tank 10 through the upper connecting pipe 28 of the transfer tank, or it can be directly discharged for use through the outlet 27.

[0030] Second purification: When purifying and removing impurities from the target solution that has passed through the first filter tank 11 and entered the transfer tank 10, the control valves on the lower connecting pipe 35 and the second lower connecting pipe 18 of the transfer tank are opened, and the control valve on the lower main pipe 23 connected between the lower connecting pipe 35 and the second lower connecting pipe 18 of the transfer tank is opened. The power pump 24 is then turned on, so that the target solution inside the transfer tank 10 enters the second filter tank 12 after passing through the lower connecting pipe 35, the lower main pipe 23 and the second lower connecting pipe 18 of the transfer tank. The target solution enters from the bottom of the second filter tank 12, and after passing through the filter screen 16, the filter bag 15 and the adsorption resin, it flows out from the second upper connecting pipe 21 at the top of the second filter tank 12. The outflowing solution can flow into the transfer tank 10 through the upper connecting pipe 28 of the transfer tank after passing through the upper main pipe 31, or it can be directly discharged for use through the outlet 27.

[0031] Third purification: When purifying and removing impurities from the target solution that has passed through the second filter tank 12 and entered the transfer tank 10, the control valves on the lower connecting pipe 35 and the third lower connecting pipe 19 of the transfer tank are opened, and the control valve on the lower main pipe 23 connected between the lower connecting pipe 35 and the third lower connecting pipe 19 of the transfer tank is opened. The power pump 24 is turned on, so that the target solution inside the transfer tank 10 enters the third filter tank 13 after passing through the lower connecting pipe 35, the lower main pipe 23 and the third lower connecting pipe 19 of the transfer tank. The target solution enters from the bottom of the third filter tank 13, and after passing through the filter screen 16, the filter bag 15 and the adsorption resin, it flows out from the third upper connecting pipe 22 at the top of the third filter tank 13. The outflowing solution passes through the upper main pipe 31 and can flow into the transfer tank 10 again for impurity removal through the upper connecting pipe 28 of the transfer tank, or it can be directly discharged through the outlet 27 for use.

[0032] It should be noted that the purpose of the intermediate tank 10 is to temporarily store the initial solution, alleviate the processing speed difference between the preceding and following processes, ensure uniform solution mixing, facilitate sampling and monitoring, and reduce contamination of the grease by external impurities. First filter tank 11: Contains a 300-mesh nylon filter bag with a 5mm mesh size to remove particulate or non-metallic impurities. First filter tank 12: Contains a 300-mesh nylon filter bag with a 5mm mesh size, filled to 2 / 3 of the filter height. CH-93 adsorption resin removes calcium and magnesium impurities. First filter cartridge 13: Contains a 300-mesh nylon filter bag with a 5mm pore size, filled to 2 / 3 of the filter height. CH-90 adsorption resin removes nickel and cobalt impurities.

[0033] The adsorption resin in the second filter cartridge 12 or the second filter cartridge 13 is activated and regenerated by countercurrent washing at 4 BV / H. First, it is washed countercurrently with 5% sulfuric acid solution for 40 minutes, then with clean water for 30 minutes, then with 5% sodium hydroxide solution for 30 minutes, and finally with clean water for 30 minutes. The regeneration and activation are then complete.

[0034] Furthermore, the bypass pipe includes a first bypass pipe 29, a second bypass pipe 32, and a third bypass pipe 33. The two ends of the first bypass pipe 29, the second bypass pipe 32, and the third bypass pipe 33 are respectively connected to the lower main pipe 23 and the upper main pipe 31. The first bypass pipe 29 is disposed adjacent to the first filter barrel 11, the second bypass pipe 32 is disposed adjacent to the second filter barrel 12, and the third bypass pipe 33 is disposed adjacent to the third filter barrel 13.

[0035] After the target solution is purified by the filter media such as filter screen 16, filter bag 15, and adsorption resin in the filter tank, it can be transported from the top of the filter tank to the main pipeline 31 through the corresponding upper connecting pipe. Then, depending on actual needs, it can be returned to the transfer tank 10 through the upper connecting pipe 28 of the transfer tank for further purification, or directly discharged from the outlet 27 for use. This parallel connection structure not only ensures the stability and reliability of the system operation, but also realizes the multi-stage circulation purification function of the solution. At the same time, through the coordination and adjustment of the control valve 26, the flow direction and processing steps of the solution can be flexibly controlled, which greatly improves the operational flexibility and purification efficiency of the system, and provides a strong guarantee for obtaining high-purity manganese metal solution.

[0036] Each connection is equipped with an independent control valve 26, allowing operators to flexibly control the opening or closing of each pipeline according to actual needs, thereby achieving directional flow of the solution within the system. This control method not only allows for the selection of different filtration paths based on varying process requirements but also enables the immediate disconnection of specific pipelines in case of system malfunctions or maintenance needs, facilitating system maintenance and cleaning. Furthermore, the combined operation of the control valves 26 enables multiple operating modes, including forward filtration and reverse cleaning, significantly improving the system's operational flexibility and reliability, and providing strong technical support for the efficient purification of manganese metal solutions.

[0037] Furthermore, one end of the first upper connecting pipe 20 is connected to the top of the first filter barrel 11, and the other end of the first upper connecting pipe 20 is connected to the first bypass pipe 29. One end of the second upper connecting pipe 21 is connected to the top of the second filter barrel 12, and the other end of the second upper connecting pipe 21 is connected to the second bypass pipe 32. One end of the third upper connecting pipe 22 is connected to the top of the third filter barrel 13, and the other end of the third upper connecting pipe 22 is connected to the upper main pipe 31. One end of the transfer barrel upper connecting pipe 28 is connected to the top of the transfer barrel 10, and the other end of the transfer barrel upper connecting pipe 28 is connected to the first bypass pipe 29. One end of the fourth upper connecting pipe 36 is connected to the top of the second filter barrel 12, and the other end of the fourth upper connecting pipe 36 is connected to the third bypass pipe 33. A transparent tube 25 is provided on the first upper connecting pipe 20 near the first filter barrel 11, which facilitates observation of the internal liquid.

[0038] When the first filter tank 11 is reverse-cleaned, acid or alkali solution or clean water is injected into the transfer tank 10 through the inlet pipe 30. The control valves on the transfer tank lower pipe 35, the first upper pipe 20, the first lower pipe 17 and the first bypass pipe 29 are opened. All control valves on the lower main pipe 23 are opened except for the control valve on the lower main pipe 23 located between the first lower pipe 17 and the first bypass pipe 29, and the control valve on the lower main pipe 23 adjacent to the drain port at one end of the transfer tank 10. The power pump 24 is turned on to inject the acid or alkali solution or clean water inside the transfer tank 10 into the top of the first filter tank 11. The acid or alkali solution or clean water flows from the top to the bottom of the first filter tank 11 to clean the filter bag 15, filter screen 16 and inner wall and other components. The cleaning waste liquid is discharged through the first lower pipe 17 and the lower main pipe 23.

[0039] When the second filter tank 12 is reverse-cleaned, acid or alkali solution or clean water is injected into the transfer tank 10 through the inlet pipe 30. The control valves on the transfer tank lower pipe 35, the second upper pipe 21, the second lower pipe 18, and the second bypass pipe 32 are opened. All control valves on the lower main pipe 23 are opened except for the control valve on the lower main pipe 23 located between the second lower pipe 18 and the second bypass pipe 32, and the control valve on the lower main pipe 23 adjacent to the drain port at one end of the transfer tank 10. The power pump 24 is turned on to inject the acid or alkali solution or clean water inside the transfer tank 10 into the top of the second filter tank 12. The acid or alkali solution or clean water flows from the top to the bottom of the second filter tank 12 to clean the filter bag 15, filter screen 16, adsorption resin, and inner wall components. The cleaning waste liquid is discharged through the second lower pipe 18 and the lower main pipe 23.

[0040] When performing reverse cleaning of the third filter tank 13, acid or alkali solution or clean water is injected into the transfer tank 10 through the inlet pipe 30. The control valves on the transfer tank lower pipe 35, the third upper pipe 22, the third lower pipe 19, and the third bypass pipe 33 are opened. All control valves on the lower main pipe 23 are opened except for the control valve located between the third lower pipe 19 and the third bypass pipe 33, and the control valve at the drain port adjacent to one end of the transfer tank 10 on the lower main pipe 23. The power pump 24 is turned on to inject the acid or alkali solution or clean water inside the transfer tank 10 into the top of the third filter tank 13. The acid or alkali solution or clean water flows from the top to the bottom of the third filter tank 13 to clean the filter bag 15, filter screen 16, adsorption resin, and inner wall components. The cleaning waste liquid is discharged through the third lower pipe 19 and the lower main pipe 23.

[0041] Furthermore, the first filter barrel 11, the second filter barrel 12 and the third filter barrel 13 are all provided with filter bags 15 and filter screens 16.

[0042] The system comprises a filter bag 15 and a filter screen 16, forming a dual filtration structure. The filter screen 16 serves as the basic support layer and also performs primary filtration, intercepting larger particulate impurities. The filter bag 15 acts as a fine filtration layer, further trapping smaller impurity particles. This dual-layer filtration design not only improves the reliability and efficiency of filtration but also reduces the load on individual filter layers through staged filtration, effectively extending the service life of the filter media.

[0043] Furthermore, both the second filter barrel 12 and the third filter barrel 13 are equipped with adsorption resin.

[0044] The adsorption resin inside the filter cartridge, together with the filter bag 15 and filter screen 16, constitutes a multi-stage filtration system. The adsorption resin in the second filter cartridge 12 is specifically used to filter calcium and magnesium ions from the solution, while the adsorption resin in the third filter cartridge 13 primarily filters heavy metal ions such as cobalt and nickel. This design, through the selective adsorption of the adsorption resin, achieves deep purification of specific ions on top of basic filtration, thereby improving the purity of the manganese metal solution. Through the triple filtration of the filter screen 16, filter bag 15, and adsorption resin, a complete purification system is formed, from coarse to fine, from ordinary filtration to the ion level, providing a reliable guarantee for obtaining a high-purity manganese metal solution.

[0045] Furthermore, pressure gauges 34 are provided at the top of the first filter barrel 11, the second filter barrel 12 and the third filter barrel 13, and observation ports 14 are provided at the top of the first filter barrel 11, the second filter barrel 12 and the third filter barrel 13.

[0046] Pressure gauge 34 can monitor pressure changes in each filter tank in real time. When the pressure value rises, it indicates that the filter screen 16, filter bag 15, or adsorption resin and other filter media may be clogged, requiring timely backwashing or replacement. When the pressure is abnormal, it can also detect system malfunctions in a timely manner, ensuring safe operation of the equipment. The observation port 14 allows operators to easily observe the liquid level, solution state, and filtration effect in each filter tank at any time, facilitating timely detection and handling of problems.

[0047] This utility model is illustrated through the above embodiments, but it is not limited to these embodiments, meaning that it does not necessarily depend on them for implementation. Those skilled in the art should understand that all related improvements to this utility model fall within its protection and disclosure scope.

Claims

1. A purification and impurity removal system for high-purity electrolytic manganese metal production, comprising a transfer bucket (10), a first filter bucket (11), a second filter bucket (12), a third filter bucket (13), a lower outlet main pipe (23) and an upper outlet main pipe (31), and upper connecting pipes and lower connecting pipes are arranged on the transfer bucket (10), the first filter bucket (11), the second filter bucket (12) and the third filter bucket (13), characterized in that, The upper connecting pipes on the transfer tank (10), the first filter tank (11), the second filter tank (12) and the third filter tank (13) are all connected in parallel with the upper main pipe (31), and the lower connecting pipes on the transfer tank (10), the first filter tank (11), the second filter tank (12) and the third filter tank (13) are all connected in parallel with the lower main pipe (23); the top of the transfer tank (10) is provided with a liquid inlet pipe (30), one end of the upper main pipe (31) is provided with a liquid outlet (27), and the end of the lower main pipe (23) is provided with a sewage outlet. The bypass pipe, the upper connecting pipe, the lower connecting pipe, the upper main pipe (31) and the lower main pipe (23) are all provided with control valves (26), and the lower main pipe (23) is provided with a power pump (24) close to the transfer tank (10); by starting and stopping the switching of the multiple control valves and cooperating with the power pump (24), the solution in the system is purified and impurities are removed or the filter tank is reversely cleaned.

2. The purification and impurity removal system for high purity electrolytic manganese metal production according to claim 1, characterized in that, The upper connecting pipe includes a first upper connecting pipe (20), a second upper connecting pipe (21), a third upper connecting pipe (22), a transfer tank upper connecting pipe (28) and a fourth upper connecting pipe (36), and the lower connecting pipe includes a first lower connecting pipe (17), a second lower connecting pipe (18), a third lower connecting pipe (19) and a transfer tank lower connecting pipe (35); one end of the first lower connecting pipe (17) is connected to the bottom of the first filter tank (11), and the other end of the first lower connecting pipe (17) is connected to the lower main pipe (23); one end of the second lower connecting pipe (18) is connected to the bottom of the second filter tank (12), and the other end of the second lower connecting pipe (18) is connected to the lower main pipe (23); one end of the third lower connecting pipe (19) is connected to the bottom of the third filter tank (13), and the other end of the third lower connecting pipe (19) is connected to the lower main pipe (23); one end of the transfer tank lower connecting pipe (35) is connected to the bottom of the transfer tank (10), and the other end of the transfer tank lower connecting pipe (35) is connected to the lower main pipe (23).

3. The purification and impurity removal system for high purity electrolytic manganese metal production according to claim 2, characterized in that, The bypass pipe includes a first bypass pipe (29), a second bypass pipe (32) and a third bypass pipe (33), both ends of the first bypass pipe (29), the second bypass pipe (32) and the third bypass pipe (33) are respectively connected to the lower main pipe (23) and the upper main pipe (31), the first bypass pipe (29) is arranged close to the first filter tank (11), the second bypass pipe (32) is arranged close to the second filter tank (12), and the third bypass pipe (33) is arranged close to the third filter tank (13).

4. The purification and impurity removal system for high-purity electrolytic manganese metal production according to claim 3, characterized in that, One end of the first upper connecting pipe (20) is connected to the top of the first filter bucket (11), and the other end of the first upper connecting pipe (20) is connected to the first bypass pipe (29). One end of the second upper connecting pipe (21) is connected to the top of the second filter bucket (12), and the other end of the second upper connecting pipe (21) is connected to the second bypass pipe (32). One end of the third upper connecting pipe (22) is connected to the top of the third filter bucket (13), and the other end of the third upper connecting pipe (22) is connected to the upper road main pipe (31). One end of the transfer bucket upper connecting pipe (28) is connected to the top of the transfer bucket (10), and the other end of the transfer bucket upper connecting pipe (28) is connected to the first bypass pipe (29). One end of the fourth upper connecting pipe (36) is connected to the top of the second filter bucket (12), and the other end of the fourth upper connecting pipe (36) is connected to the third bypass pipe (33).

5. The purification and impurity removal system for high purity electrolytic manganese metal production according to claim 4, characterized in that, The first bypass pipe (29), the second bypass pipe (32), and the third bypass pipe (33) are each provided with at least two control valves, which are respectively located on both sides of the intersection of the bypass pipe and the upper connecting pipe.

6. The purification and impurity removal system for high purity electrolytic manganese metal production according to claim 1, characterized in that, The first filter bucket (11), the second filter bucket (12), and the third filter bucket (13) are each provided with a filter bag (15) and a filter screen (16) inside.

7. The purification and impurity removal system for high purity electrolytic manganese metal production according to claim 6, characterized in that, The second filter bucket (12) and the third filter bucket (13) are each provided with adsorption resin inside.

8. The purification and impurity removal system for the production of high purity electrolytic manganese metal according to any one of claims 1 to 7, characterized in that, The first filter bucket (11), the second filter bucket (12), and the third filter bucket (13) are each provided with a pressure gauge (34) at the top end, and are each provided with an observation port (14) at the upper part.

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