Device for removing oil, TOC (total organic carbon) and suspension in manganese finished product solution

Abstract

The utility model discloses a device for removing oil, TOC and suspension in a manganese finished product solution, and belongs to the technical field of manganese purification. The utility model discloses a device for removing oil, TOC and suspension in a manganese finished product solution. The device comprises an impurity removal reaction tank, a first filter press, an acid regulation reaction tank, a second filter press, a cleaning tank, a third filter press and a finished product tank, a manganese finished product solution inlet and a manganese hydroxide feeding hole are formed in the top of the impurity removal reaction tank, and a first discharging hole is formed in the bottom; the first filter press is used for receiving a discharge product of the first discharge hole and separating to obtain filter residues and filtrate; an acid liquor filling port and a first filtrate inlet are formed in the top of the acid adjusting reaction tank, and a second discharge port is formed in the bottom; the second filter press is used for receiving a discharge product of the second discharge hole and separating to obtain filter residues and filtrate; the top of the cleaning tank is provided with a filter residue inlet and a clear water port, and the bottom is provided with a third discharge port; the third filter press is used for receiving a discharge product of the third discharge hole and separating to obtain filter residues and filtrate; the finished product tank is used for receiving filtrate separated by the second filter press.

Description

Technical Field

[0001] This utility model belongs to the field of manganese purification technology, and more specifically, relates to a device for removing oil, TOC and suspension from a manganese finished solution. Background Technology

[0002] Manganese is a grayish-white, hard, brittle, and lustrous transition metal that is widely used in the steel industry, alloy industry, organic industry, pharmaceutical industry, and dry battery industry. In addition, manganese can also be used as a trace element additive. Manganese is often used in the form of manganese solution, but the oil, TOC, and suspended matter present in the manganese raw material processing process can interfere with the electroplating, catalysis, or analysis of manganese.

[0003] Existing methods for purifying manganese finished solutions involve first using resin adsorption and activated carbon adsorption to remove oil and TOC, followed by evaporation, crystallization, centrifugation, and then dissolution to remove TOC. TOC is then removed again using hydrogen peroxide, ozone, or ultraviolet light, and finally, filtration equipment is used to remove impurities. For example, a method for treating nickel-cobalt-manganese ternary waste (CN202010962154.4) discloses a method that pre-treats the nickel-cobalt-manganese ternary waste, then uses multi-stage countercurrent extraction to obtain a third aqueous phase, uses activated carbon to remove oil to obtain a nickel-cobalt-manganese solution, and then uses resin to remove TOC from the solution, thus purifying and recovering the nickel-cobalt-manganese ternary waste. However, this method generates a certain amount of waste resin and waste activated carbon. Fine particles from the waste resin and waste activated carbon, as well as certain elements such as silicon, potassium, sodium, iron, phosphorus, calcium, and fluorine, may enter the finished solution, affecting the quality of the finished product. Furthermore, multi-stage extraction increases production costs and energy consumption, and the oxidation of a small amount of manganese during extraction may endanger personal safety. Finally, small particles are difficult to remove during filtration, affecting product performance and downstream production.

[0004] Therefore, we need a device for removing oil, TOC, and suspension from manganese finished product solutions that is low in cost and can achieve a production process with no solid waste, zero emissions, and no hazards. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide a device for removing oil, TOC and suspended matter from a manganese finished solution. It is low in cost and can completely remove oil, TOC and suspended matter through a highly efficient multi-stage cleaning system and by using manganese hydroxide adsorption, so as to achieve production with no solid waste, zero emissions and no harm.

[0006] This utility model discloses a device for removing oil, TOC, and suspension from a manganese finished product solution, comprising a purification reaction tank, a first filter press, an acid conditioning reaction tank, a second filter press, a washing tank, a third filter press, and a finished product tank. The first filter press is used to receive the output product from the purification reaction tank and separate filter residue and filtrate. The second filter press is used to receive the output product from the acid conditioning reaction tank and separate filter residue and filtrate. The third filter press is used to receive the output product from the washing tank and separate filter residue and filtrate. The finished product tank is used to receive the filtrate separated by the second filter press.

[0007] The top of the impurity removal reaction tank is equipped with a manganese finished product solution inlet and a manganese hydroxide feed port, and the bottom is equipped with a first discharge port; the first filter press is connected to the first discharge port through a pipe and is used to separate the manganese finished product solution after the impurity removal reaction from the manganese dioxide after adsorption of oil, TOC and suspended impurities.

[0008] The acid-adjusting reaction tank is equipped with an acid inlet and a first filtrate inlet at the top, and a second discharge outlet at the bottom. The first filtrate inlet is connected to the first filtrate outlet of the first filter press, and the second filter press is connected to the second discharge outlet through a pipe. This is used to separate the manganese finished product solution containing acid after the acid-adjusting reaction from the small amount of residual manganese dioxide solid.

[0009] The top of the cleaning tank is equipped with a filter residue inlet and a clean water outlet, and the bottom is equipped with a third discharge outlet. The filter residue inlet is connected to the first filter residue outlet of the first filter press, and the third filter press is connected to the third discharge outlet through a pipe. The third filter press is used to clean and separate manganese dioxide after adsorbing oil, TOC and suspended impurities to obtain manganese dioxide and a solution containing oil, TOC and impurities.

[0010] As a further improvement of this utility model, the impurity removal reaction tank also includes a first stirring device, a first output pump, and a reflux port. The first stirring device is located inside the impurity removal reaction tank and is used to stir the manganese product solution and manganese hydroxide solid to fully contact each other, thereby adjusting the pH of the solution from the initial state to 4-7. The first output pump is located between the first discharge port and the first filter press and is used to transport the product after impurity removal in the impurity removal reaction tank to the first filter press. First control valves are provided on both sides of the first output pump to adjust the feed flow rate. The reflux port is located at the top of the impurity removal reaction tank and is used to receive the filter residue separated from the second filter residue outlet at the bottom of the second filter press, thereby improving the utilization rate of manganese dioxide and avoiding waste of raw materials.

[0011] As a further improvement of this utility model, the first stirring device includes a support frame, a stirring motor, a stirring shaft, several support rods, and spiral blades. The support frame is detachably installed on the top of the impurity removal reaction tank and is used to place the stirring motor. The output shaft of the stirring motor is detachably connected to the stirring shaft. The spiral blades are located on the outer periphery of the stirring shaft, close to the wall of the impurity removal reaction tank, and are used to fully stir the residual manganese hydroxide solid on the wall of the impurity removal reaction tank to improve the adsorption efficiency of manganese dioxide. The spiral blades are fixedly connected to the stirring shaft through the support rods.

[0012] As a further improvement of this utility model, the cross-section of the spiral blade is inclined to enable the manganese hydroxide to circulate in the solution along the height of the impurity removal reaction tank, so that the manganese hydroxide and the solution as a whole can be fully contacted, thereby improving the impurity removal effect.

[0013] As a further improvement of this utility model, the acid-adjusting reaction tank also includes a second stirring device and a second output pump. The second stirring device is located inside the acid-adjusting reaction tank and is used to stir the filtrate delivered by the first filter press to fully contact with dilute sulfuric acid, thereby adjusting the pH back to the initial state. The second output pump is located between the second discharge port and the second filter press and is used to deliver the product after acid adjustment in the acid-adjusting reaction tank to the second filter press. Second control valves are provided on both sides of the second output pump to adjust the feed flow rate.

[0014] As a further improvement of this utility model, the cleaning tank also includes a third stirring device and a third output pump. The third stirring device is located inside the cleaning tank and is used to stir the filter residue conveyed by the first filter press to fully contact with the clean water. The third output pump is located between the third discharge port and the third filter press and is used to convey the product cleaned by the cleaning tank to the third filter press. The third output pump is equipped with third control valves on both sides for adjusting the feed flow rate.

[0015] As a further improvement of this utility model, a second filtrate inlet is provided at the top of the finished product tank, and a fourth discharge port is provided at the bottom; the second filtrate inlet is connected to the second filtrate outlet of the second filter press through a pipeline; a fourth output pump is connected to the outside of the fourth discharge port to transport the de-oiled, de-TOC and de-suspended manganese finished product solution to a storage device or a subsequent reaction device; a fourth control valve is provided on both sides of the fourth output pump to adjust the feed flow rate.

[0016] As a further improvement of this utility model, the materials of the impurity removal reaction tank, the first filter press, the acid adjustment reaction tank, the second filter press, the cleaning tank, the third filter press, the finished product tank, and the pipes are all non-reactive in contact with the manganese product solution, thereby ensuring the purity of the manganese product solution and improving the service life of the equipment.

[0017] As a further improvement of this utility model, the third filter press includes a third filtrate outlet and a third filter residue outlet. The third filter residue outlet is connected to the manganese hydroxide feed port of the impurity removal reaction tank through a pipeline, and is used to clean and reuse the manganese hydroxide in the filter residue separated by the first filter press. The filtrate output from the third filtrate outlet is transported to the manganese raw material area for ore blending to obtain a manganese finished solution, thereby improving resource utilization and realizing a circular economy.

[0018] Compared to existing technologies, the advantages of this invention are as follows: By continuously processing the manganese hydroxide solution through segmented impurity removal reaction tank, acid adjustment reaction tank, and cleaning tank, the oil, TOC, and suspension are removed by adsorption of manganese hydroxide. After cleaning and acid adjustment, a manganese product meeting the required specifications is prepared, achieving a zero-waste, zero-emission, harmless, and low-cost manganese product solution for oil, TOC, and suspension removal. By installing spiral blades of the first stirring device near the wall of the impurity removal reaction tank, the residual manganese hydroxide solids on the tank wall can be fully stirred, thereby improving the adsorption effect. Furthermore, by using spiral blades with an inclined cross-section, the manganese hydroxide is effectively removed during impurity removal. The reaction tank circulates vertically, ensuring full contact between manganese hydroxide and the solution, thus improving impurity removal. A return port in the impurity removal reaction tank receives the filter residue separated from the second filter residue outlet at the bottom of the second filter press, preventing waste of manganese hydroxide and reducing costs. Connecting the third filter residue outlet of the third filter press to the manganese hydroxide feed port of the impurity removal reaction tank via a pipeline allows the manganese hydroxide in the filter residue separated by the first filter press to be cleaned and reused. The filtrate output from the third filtrate outlet of the third filter press is transported to the manganese raw material area for ore blending to obtain a finished manganese solution, thereby improving resource utilization and achieving a circular economy. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the impurity removal reaction tank structure of this utility model;

[0021] Figure 3 This is a schematic diagram of the cross-sectional structure of the impurity removal reaction tank of this utility model;

[0022] Figure 4 This is a schematic diagram of the acid-adjusting reaction tank of this utility model;

[0023] Figure 5 This is a schematic diagram of the cleaning tank structure of this utility model;

[0024] Figure 6 This is a schematic diagram of the finished tank structure of this utility model.

[0025] Explanation of the labels in the diagram:

[0026] 1. Impurity Removal Reaction Tank; 11. Manganese Finished Solution Inlet; 12. Manganese Hydroxide Feeding Port; 13. First Discharge Port; 14. First Stirring Device; 141. Support Frame; 142. Stirring Motor; 143. Stirring Shaft; 144. Support Rod; 145. Spiral Blade; 15. First Output Pump; 16. Reflux Port; 17. First Control Valve; 2. First Filter Press; 21. First Filtrate Outlet; 22. First Filter Cake Outlet; 3. Acid Adjustment Reaction Tank; 31. Acid Inlet; 32. First Filtrate Inlet; 33. Second Discharge Port; 34. Second stirring device, 35 second output pump, 36 second control valve, 4 second filter press, 41 second filtrate outlet, 42 second filter residue outlet, 5 washing tank, 51 filter residue inlet, 52 clean water outlet, 53 third discharge outlet, 54 third stirring device, 55 third output pump, 56 third control valve, 6 third filter press, 61 third filtrate outlet, 62 third filter residue outlet, 7 finished product tank, 71 second filtrate inlet, 72 fourth discharge outlet, 73 fourth output pump, 74 fourth control valve. Detailed Implementation

[0027] Specific Implementation Example 1: Please refer to Figures 1-6 An apparatus for removing oil, TOC, and suspension from a manganese finished product solution includes a purification reaction tank 1, a first filter press 2, an acid adjustment reaction tank 3, a second filter press 4, a washing tank 5, a third filter press 6, and a finished product tank 7. The first filter press 2 is used to receive the output product from the purification reaction tank 1 and separate filter residue and filtrate. The second filter press 4 is used to receive the output product from the acid adjustment reaction tank 3 and separate filter residue and filtrate. The third filter press 6 is used to receive the output product from the washing tank 5 and separate filter residue and filtrate. The finished product tank 7 is used to receive the filtrate separated by the second filter press 4.

[0028] like Figure 2 The impurity removal reaction tank 1 shown is equipped with a manganese product solution inlet 11 and a manganese hydroxide feed port 12 at the top, and a first discharge port 13 at the bottom; the first filter press 2 is connected to the first discharge port 13 through a pipe, and is used to separate the manganese product solution after the impurity removal reaction from the manganese dioxide after adsorption of oil, TOC and suspended impurities.

[0029] like Figure 4 The acid-adjusting reaction tank 3 shown is provided with an acid inlet 31 and a first filtrate inlet 32 ​​at the top and a second discharge outlet 33 at the bottom. The first filtrate inlet 32 ​​is connected to the first filtrate outlet 21 of the first filter press 2, and the second filter press 4 is connected to the second discharge outlet 33 through a pipe. It is used to separate the manganese finished solution containing acid after the acid-adjusting reaction from the small amount of residual manganese dioxide solid.

[0030] like Figure 5The washing tank 5 shown is provided with a filter residue inlet 51 and a clean water outlet 52 at the top and a third discharge outlet 53 at the bottom; the filter residue inlet 51 is connected to the first filter residue outlet 22 of the first filter press 2, and the third filter press 6 is connected to the third discharge outlet 53 through a pipe; the third filter press 6 is used to separate manganese dioxide after washing and adsorbing oil, TOC and suspended impurities to obtain manganese dioxide and a solution containing oil, TOC and impurities.

[0031] Specifically, such as Figure 2 The impurity removal reaction tank 1 shown also includes a first stirring device 14, a first output pump 15, and a return port 16. The first stirring device 14 is located inside the impurity removal reaction tank 1 and is used to stir the manganese product solution to ensure full contact with the solid manganese hydroxide. Since the adsorption capacity of manganese hydroxide is better at high pH, ​​the pH of the solution is adjusted from the initial state to 4-7. The first output pump 15 is located between the first discharge port 13 and the first filter press 2 and is used to deliver the manganese product solution after impurity removal in the impurity removal reaction tank 1 and the manganese dioxide after adsorbing oil, TOC, and suspended impurities to the first filter press 2. The first output pump 15 is provided with first control valves 17 on both sides to adjust the feed flow rate. The return port 16 is located at the top of the impurity removal reaction tank 1 and is used to receive the filter residue separated from the second filter residue outlet 42 at the bottom of the second filter press 4, thereby improving the utilization rate of manganese dioxide and avoiding waste of raw materials.

[0032] Specifically, such as Figure 3 The first stirring device 14 shown includes a support frame 141, a stirring motor 142, a stirring shaft 143, several support rods 144, and a spiral blade 145. The support frame 141 is detachably installed on the top of the impurity removal reaction tank 1 and is used to house the stirring motor 142. The output shaft of the stirring motor 142 is detachably connected to the stirring shaft 143. The spiral blade 145 is located on the outer periphery of the stirring shaft 143, close to the wall of the impurity removal reaction tank 1, and is used to fully stir the residual manganese hydroxide solid on the wall of the impurity removal reaction tank 1 to improve the adsorption efficiency of manganese dioxide. The spiral blade 145 is fixedly connected to the stirring shaft 143 through the support rods 144 to ensure that the spiral blade 145 does not fall off due to high-speed rotation during the stirring process, further optimizing the stirring effect.

[0033] As a further improvement of this utility model, the spiral blade 145 is inclined to generate a circulating flow of manganese hydroxide in the solution along the height of the impurity removal reaction tank 1, so that the manganese hydroxide and the solution can be fully contacted, thereby improving the impurity removal effect.

[0034] Specifically, such as Figure 4The acid-adjusting reaction tank 3 also includes a second stirring device 34 and a second output pump 35. The second stirring device 34 is located inside the acid-adjusting reaction tank 3 and is used to stir the filtrate delivered by the first filter press 2 to fully contact with dilute sulfuric acid, thereby adjusting the pH back to the initial state and dissolving the smaller manganese dioxide solid particles into the manganese finished solution. The second output pump 35 is located between the second discharge port 33 and the second filter press 4 and is used to deliver the acid-containing manganese finished solution and the remaining small amount of manganese dioxide solid after acid adjustment in the acid-adjusting reaction tank 3 to the second filter press 4. The second output pump 35 is provided with second control valves 36 on both sides to adjust the feed flow rate.

[0035] Specifically, such as Figure 5 The cleaning tank 5 shown also includes a third stirring device 54 and a third output pump 55. The third stirring device 54 is inside the cleaning tank 5 and is used to stir the filter residue conveyed by the first filter press 2 to fully contact with the clean water. The cleaning water can be clean water with a temperature greater than 40°C to improve the washing effect. The third output pump 55 is located between the third discharge port 53 and the third filter press 6 and is used to convey water containing adsorbed oil, TOC and suspended impurities and manganese dioxide after cleaning in the cleaning tank 5 to the third filter press 6. The third output pump 55 is equipped with third control valves 56 on both sides to adjust the feed flow rate.

[0036] Specifically, such as Figure 6 The finished product tank 7 shown is provided with a second filtrate inlet 71 at the top and a fourth discharge port 72 at the bottom; the second filtrate inlet 71 is connected to the second filtrate outlet 41 of the second filter press 4 through a pipeline; a fourth output pump 73 is connected to the outside of the fourth discharge port 72, which is used to transport the de-oiled, de-TOC and de-suspended manganese finished product solution to the storage device or subsequent reaction device; a fourth control valve 74 is provided on both sides of the fourth output pump 73, which is used to adjust the feed flow rate.

[0037] Specifically, the materials of the impurity removal reaction tank 1, the first filter press, the acid adjustment reaction tank 3, the second filter press 4, the cleaning tank 5, the third filter press 6, the finished product tank 7, and the pipelines are all non-reactive in contact with the manganese product solution, thereby ensuring the purity of the manganese product solution and improving the service life of the equipment.

[0038] Specifically, the third filter press 6 includes a third filtrate outlet 61 and a third filter residue outlet 62. The third filter residue outlet 62 is connected to the manganese hydroxide feed port 12 of the impurity removal reaction tank 1 through a pipeline, and is used to clean and reuse the manganese hydroxide in the filter residue separated by the first filter press 2. The filtrate output from the third filtrate outlet 61 is transported to the manganese raw material area for ore blending to obtain a manganese finished solution, thereby improving resource utilization and realizing a circular economy.

[0039] During operation, the pre-oil and TOC-removing manganese solution is added to the impurity removal reaction tank 1 through the manganese solution inlet 11. A pH sample is taken simultaneously. Then, solid manganese hydroxide is gradually added through the manganese hydroxide inlet 12 until the pH reaches 4-7. The stirring motor 142 is activated, and the spiral blades 145 are used to stir the solution, ensuring full contact between the manganese hydroxide and the solution, thus allowing the manganese hydroxide to fully adsorb oil, TOC, and suspended impurities. After the reaction, the first output pump 15 transports the medium from the impurity removal reaction tank to the first filter press 2 for solid-liquid separation. The filtrate from the first filter press 2 enters the acid adjustment reaction tank 3 through the first filtrate outlet 21 and the first filtrate inlet 32. Acid is added through the acid inlet 31 to adjust the pH to match the initial pH. After the acid adjustment reaction, the second output pump 35 is used to... The medium inside the acid reaction tank 3 is transported to the second filter press 4 for solid-liquid separation. The separated filtrate, which is also the purified manganese product solution, enters the product tank 7 through the second filtrate outlet 41 and the second filtrate inlet 71. It can be transported to the storage device or subsequent reaction device by the fourth output pump 73. The filter residue separated by the first filter press 2 is transported to the washing tank 5 through the first filter residue outlet 22 and the filter residue inlet 51. In the washing tank 5, clean water is added from the clean water outlet 52 and stirred and washed. Then, it is sent to the third filter press 6 through the third washing pump 55. The solid manganese hydroxide is separated and transported to the manganese hydroxide feed inlet 12 for reuse. The separated liquid is used for ore blending. The filter residue obtained by the second filter press 4 is transported to the return port 16 of the impurity removal reaction tank 1 through the second filter residue outlet 42 for reuse, further optimizing the production process and improving the overall environmental benefits.

[0040] The above description is merely a preferred embodiment of this utility model; however, the protection scope of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the technical scope disclosed in this utility model, based on the technical solution and its improved concept, should be included within the protection scope of this utility model.

Claims

1. A device for oil and TOC removal and suspension removal from a manganese finished solution, characterized by, The system includes a purification reaction tank (1), a first filter press (2), an acid conditioning reaction tank (3), a second filter press (4), a washing tank (5), a third filter press (6), and a finished product tank (7). The first filter press (2) is used to receive the output product from the purification reaction tank (1) and separate it into filter residue and filtrate. The second filter press (4) is used to receive the output product from the acid conditioning reaction tank (3) and separate it into filter residue and filtrate. The third filter press (6) is used to receive the output product from the washing tank (5) and separate it into filter residue and filtrate. The finished product tank (7) is used to receive the filtrate separated by the second filter press (4). The impurity removal reaction tank (1) is provided with a manganese finished product solution inlet (11) and a manganese hydroxide feed port (12) at the top, and a first discharge port (13) at the bottom; the first filter press (2) is connected to the first discharge port (13) through a pipe; The acid-adjusting reaction tank (3) is provided with an acid filling port (31) and a first filtrate inlet (32) at the top and a second discharge port (33) at the bottom; the first filtrate inlet (32) is connected to the first filtrate outlet (21) of the first filter press (2), and the second filter press (4) is connected to the second discharge port (33) through a pipe; The top of the cleaning tank (5) is provided with a filter residue inlet (51) and a clean water outlet (52), and the bottom is provided with a third discharge outlet (53); the filter residue inlet (51) is connected to the first filter residue outlet (22) of the first filter press (2), and the third filter press (6) is connected to the third discharge outlet (53) through a pipe.

2. A device for oil and TOC removal and suspension of a finished manganese solution according to claim 1, characterized in that, The impurity removal reaction tank (1) also includes a first stirring device (14), a first output pump (15), and a return port (16). The first stirring device (14) is inside the impurity removal reaction tank (1) and is used to stir the manganese product solution and manganese hydroxide solid to fully contact each other, thereby adjusting the pH of the solution from the initial state to 4-7. The first output pump (15) is located between the first discharge port (13) and the first filter press (2) and is used to transport the product after impurity removal in the impurity removal reaction tank (1) to the first filter press (2). The first output pump (15) is provided with first control valves (17) on both sides to adjust the feed flow rate. The return port (16) is set at the top of the impurity removal reaction tank (1) and is used to receive the filter residue separated from the second filter residue outlet (42) at the bottom of the second filter press (4).

3. A device for oil and TOC removal and suspension of a finished manganese solution according to claim 2, characterized in that, The first stirring device (14) includes a support frame (141), a stirring motor (142), a stirring shaft (143), several support rods (144) and a spiral blade (145). The support frame (141) is detachably installed on the top of the impurity removal reaction tank (1) and is used to place the stirring motor (142). The output shaft of the stirring motor (142) is detachably connected to the stirring shaft (143). The spiral blade (145) is located on the outer periphery of the stirring shaft (143) and close to the wall of the impurity removal reaction tank (1) to fully stir the residual manganese hydroxide solid on the wall of the impurity removal reaction tank (1). The spiral blade (145) and the stirring shaft (143) are fixedly connected by the support rods (144).

4. A device for oil and TOC removal and suspension of a finished manganese solution according to claim 3, characterized in that, The spiral blade (145) is inclined to allow manganese hydroxide to circulate in the solution along the height of the impurity removal reaction tank (1).

5. A device for oil and TOC removal and suspension of a finished manganese solution according to claim 1, characterized in that, The acid-adjusting reaction tank (3) also includes a second stirring device (34) and a second output pump (35). The second stirring device (34) is inside the acid-adjusting reaction tank (3) and is used to stir the filtrate delivered by the first filter press (2) to fully contact with dilute sulfuric acid, thereby adjusting the pH back to the initial state. The second output pump (35) is located between the second outlet (33) and the second filter press (4) and is used to deliver the acidified product from the acidification reaction tank (3) to the second filter press (4); the second output pump (35) is equipped with a second control valve (36) on both sides to adjust the feed flow rate.

6. A device for oil and TOC removal and suspension of a finished manganese solution according to claim 1, characterized in that, The cleaning tank (5) also includes a third stirring device (54) and a third output pump (55). The third stirring device (54) is inside the cleaning tank (5) and is used to stir the filter residue conveyed by the first filter press (2) to fully contact with the clean water. The third output pump (55) is located between the third discharge port (53) and the third filter press (6) and is used to convey the product cleaned by the cleaning tank (5) to the third filter press (6). The third output pump (55) is provided with a third control valve (56) on both sides to adjust the feed flow rate.

7. A device for oil and TOC removal and suspension of a finished manganese solution according to claim 1, characterized in that, The finished product tank (7) is provided with a second filtrate inlet (71) at the top and a fourth discharge port (72) at the bottom; the second filtrate inlet (71) is connected to the second filtrate outlet (41) of the second filter press (4) through a pipeline; the fourth discharge port (72) is connected to a fourth output pump (73) on the outside, which is used to transport the deoiled, TOC removed and suspended manganese finished product solution to the storage device or subsequent reaction device; the fourth output pump (73) is provided with a fourth control valve (74) on both sides, which is used to adjust the feed flow rate.

8. A device for oil and TOC removal and suspension of a finished manganese solution according to claim 1, characterized by: The materials of the impurity removal reaction tank (1), the first filter press (2), the acid adjustment reaction tank (3), the second filter press (4), the cleaning tank (5), the third filter press (6), the finished product tank (7), and the pipes are all non-reactive in the parts that come into contact with the manganese product solution.

9. A device for oil and TOC removal and desuspension of a manganese finished solution according to claim 1, characterized in that: The third filter press (6) includes a third filtrate outlet (61) and a third filter residue outlet (62). The third filter residue outlet (62) is connected to the manganese hydroxide feed port (12) of the impurity removal reaction tank (1) through a pipeline. It is used to clean the manganese hydroxide in the filter residue separated by the first filter press (2) and reuse it. The filtrate output from the third filtrate outlet (61) is transported to the manganese raw material area for ore blending to obtain a manganese finished product solution.

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