A method for continuously producing battery-grade manganese sulfate using cobalt-nickel smelting residual liquid as raw material

Abstract

The invention relates to the technical field of new material production, and in particular to a method for continuously producing battery-grade manganese sulfate by taking cobalt-nickel smelting residual liquid as raw material, comprising step one, a feeding process; step two, a heating and crystallization process; step three, a pre-flash evaporation process; and step four, a re-dissolving process. After step two is completed, a material taking process is further provided, in which manganese sulfate crystals on a discharging platform are collected by a collecting device and enter the next process for processing; an inner cylinder is loaded with material through a feeding port, a conveying component is driven to rotate by a driving component, cobalt-nickel smelting residual liquid is driven to spirally convey upward by the conveying component, steam is input into a steam channel to heat and crystallize the cobalt-nickel smelting residual liquid, the cobalt-nickel smelting residual liquid and manganese sulfate crystals are filtered and separated by the inner cylinder, the manganese sulfate crystals are stored by a floating component, and are discharged by buoyancy, thereby improving the heating and crystallization efficiency and the production efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of new material production, and in particular to a method for continuously producing battery-grade manganese sulfate by using cobalt-nickel smelting residual liquid as raw material. Background Art

[0002] With the vigorous development of ternary materials in recent years, lithium manganese oxide batteries have been widely used, and the market demand for high-purity manganese sulfate has increased significantly. A Chinese invention patent application with application publication number CN116336769A discloses a high-purity manganese sulfate crystallization and drying system, including a mounting frame, an outer drum, an inner drum, and a stirring mechanism. The purpose of the invention is to provide a high-purity manganese sulfate crystallization and drying system with uniform heating, high evaporation efficiency, and improved production capacity.

[0003] However, the inventors found that during actual use of the device, the center of the inner drum and the outer ring were heated unevenly, the crystallization effect was poor, and the residual liquid in the inner drum had to be completely crystallized before unloading, which reduced production efficiency. Summary of the invention

[0004] The purpose of the present invention is to address the deficiencies of the prior art. A floating component is slidably arranged in a material storage cavity, a conveying component is rotatably arranged in an inner cylinder, a steam channel is opened in the conveying component, the inner cylinder is loaded with material through a feed port, the conveying component is driven to rotate by a driving component, the cobalt-nickel smelting residual liquid is driven by the conveying component to spirally convey upward, the cobalt-nickel smelting residual liquid is heated and crystallized by inputting steam into the steam channel, the cobalt-nickel smelting residual liquid and manganese sulfate crystals are filtered and separated by the inner cylinder, the manganese sulfate crystals are stored by the floating component and discharged by buoyancy, so that the cobalt-nickel smelting residual liquid in the inner cylinder is evenly heated, the crystallization efficiency is improved, and the discharge can be achieved while crystallizing, thereby solving the problems that the center and the outer ring of the inner cylinder of the existing device are unevenly heated, the crystallization effect is poor, and the residual liquid in the inner cylinder must be completely crystallized before the material can be discharged, thereby reducing the production efficiency.

[0005] In view of the above technical problems, the technical solutions adopted by the present invention are as follows:

[0006] A method for continuously producing battery-grade manganese sulfate using cobalt-nickel smelting residual liquid as raw material, comprising:

[0007] Step 1, a feeding process, preheating the cobalt-nickel smelting residual liquid through a preheating device, and pumping the preheated cobalt-nickel smelting residual liquid into the inner cylinder through a feeding port to complete the feeding;

[0008] Step 2, a heating crystallization process, wherein the driving component drives the conveying component to rotate, the conveying component drives the cobalt-nickel smelting residual liquid to be spirally conveyed upward, steam is conveyed into the steam channel through the steam pipe to heat and crystallize the cobalt-nickel smelting residual liquid, and the cobalt-nickel smelting residual liquid and manganese sulfate crystals are filtered and separated through the leakage holes on the inner cylinder to obtain manganese sulfate crystals, and the manganese sulfate crystals are conveyed to the floating component for storage through the conveying component, and the cobalt-nickel smelting residual liquid enters the storage cavity to drive the floating component to float upward, drive the manganese sulfate crystals to float upward, and complete the unloading through the discharge port and the discharge platform;

[0009] Step 3, pre-flash process, by centrifuging the separated manganese sulfate crystals to obtain centrifugal mother liquor and product salt, the centrifugal mother liquor is filtered and preheated again to enter the smelting process;

[0010] Step 4, the re-dissolution process, is to re-dissolve the product salt and preheat it, and then send it into the device for heating and crystallization again. The separated manganese sulfate crystals are centrifuged to obtain the centrifuged mother liquor and battery-grade manganese sulfate. The centrifuged mother liquor is filtered and preheated again to enter the re-smelting process.

[0011] As a preferred embodiment, in the step 1, the switch at the feed port is turned on, and the preheated cobalt-nickel smelting residual liquid is pumped into the inner cylinder from the feed port, and then the switch at the feed port is turned off to complete the loading.

[0012] As a preferred embodiment, in the step 2, the driving member drives the pulley b to rotate, the pulley b drives the belt to rotate, the belt drives the pulley a to rotate, the rotating shaft drives the auger to rotate, and the cobalt-nickel smelting residual liquid is spirally transported upward.

[0013] As a preferred embodiment, in the step 2, steam is transported into the steam channel through a steam pipe, and the steam moves to various locations of the auger through the steam channel to heat the cobalt-nickel smelting residual liquid, and performs heat preservation and aging, thereby achieving the purpose of heating crystallization.

[0014] As a preferred embodiment, in the step 2, the cobalt-nickel smelting residual liquid and the manganese sulfate crystals are filtered and separated through the leakage hole on the inner hole to obtain manganese sulfate crystals, and the manganese sulfate crystals are driven by an auger to spirally rise and are sent to the support for storage.

[0015] As a preferred embodiment, in the step 2, the cobalt-nickel smelting residual liquid is filtered through the leakage hole to enter the storage chamber to drive the buoyancy member to float up, and the buoyancy member drives the support member to float up, thereby driving the manganese sulfate crystals to float up, and the manganese sulfate crystals are discharged through the discharge port and the discharge platform.

[0016] As a preferred embodiment, a material taking process is further provided after the completion of step 2.

[0017] As another preferred embodiment, in the material taking process, the manganese sulfate crystals on the discharging platform are collected by a collecting device and sent to the next process for treatment.

[0018] The present invention also provides a device for continuously producing battery-grade manganese sulfate using cobalt-nickel smelting residual liquid as raw material, which matches the method for continuously producing battery-grade manganese sulfate using cobalt-nickel smelting residual liquid as raw material. The device comprises an outer cylinder, a cover body and a support frame arranged at the lower end of the outer cylinder, an inner cylinder is arranged in the outer cylinder, a storage cavity is arranged between the outer cylinder and the inner cylinder, a floating component is slidably arranged in the storage cavity, a reaction cavity is provided in the inner cylinder, a driving component is arranged on the cover body, an air outlet is also arranged on the cover body, a conveying component is rotatably arranged in the inner cylinder, a steam channel is provided in the conveying component, a feed port is arranged at the lower end of the outer cylinder, the inner cylinder is loaded with material through the feed port, the conveying component is driven to rotate by the driving component, the cobalt-nickel smelting residual liquid is driven to spirally convey upward by the conveying component, the cobalt-nickel smelting residual liquid is heated and crystallized by inputting steam into the steam channel, the cobalt-nickel smelting residual liquid and manganese sulfate crystals are filtered and separated by the inner cylinder, the manganese sulfate crystals are stored by the floating component and discharged by buoyancy.

[0019] As a preference, the conveying assembly comprises a rotating shaft rotatably arranged in the inner cylinder and an auger arranged on the rotating shaft, a pulley a is arranged at the upper end of the rotating shaft, and a steam outlet is opened at the lower end of the auger.

[0020] As a preference, a rotating sleeve is fixedly provided on the upper end of the rotating shaft, and a steam pipe is connected to the upper end of the rotating sleeve.

[0021] Preferably, the floating assembly comprises a buoyancy member slidably disposed in the material storage cavity, a support column disposed on the buoyancy member, and a support member disposed on the support column, wherein a plurality of filter holes are formed on the support member.

[0022] Preferably, the driving assembly comprises a driving member arranged on the cover body, a pulley b driven by the driving member, and a belt arranged between the pulley b and the pulley a.

[0023] As a preference, a feed channel is provided between the feed port and the inner cylinder.

[0024] As a preference, a plurality of discharge ports are provided at the upper end of the outer cylinder, and a discharge platform is provided at the lower end of the discharge port.

[0025] As another preferred embodiment, a plurality of leakage holes are provided on the inner cylinder along the circumferential direction.

[0026] Beneficial effects of the present invention:

[0027] 1. In the present invention, a floating component is slidably arranged in a material storage cavity, a conveying component is rotatably arranged in an inner cylinder, a steam channel is provided in the conveying component, the inner cylinder is loaded with materials through a feed port, the conveying component is driven to rotate by a driving component, the cobalt-nickel smelting residual liquid is driven to spirally convey upward by the conveying component, the cobalt-nickel smelting residual liquid is heated and crystallized by inputting steam into the steam channel, the cobalt-nickel smelting residual liquid and manganese sulfate crystals are filtered and separated by the inner cylinder, the manganese sulfate crystals are stored by the floating component and discharged by buoyancy, so that the cobalt-nickel smelting residual liquid in the inner cylinder is evenly heated, the crystallization efficiency is improved, and the material can be discharged while crystallizing, thereby improving the production efficiency.

[0028] In summary, this equipment has the advantages of improving crystallization efficiency and production efficiency, and is particularly suitable for the field of new material production technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0030] Figure 1 This is a process flow chart of a device for continuously producing battery-grade manganese sulfate using cobalt-nickel smelting residual liquid as raw material;

[0031] Figure 2 This is a schematic diagram of the structure of a device for continuously producing battery-grade manganese sulfate using cobalt-nickel smelting residual liquid as raw material;

[0032] Figure 3 It is a cross-sectional schematic diagram of a device for continuously producing battery-grade manganese sulfate using cobalt-nickel smelting residual liquid as raw material;

[0033] Figure 4 It is a schematic cross-sectional view of the outer cylinder and the inner cylinder;

[0034] Figure 5 is a cross-sectional schematic diagram of a conveying component;

[0035] Figure 6 It is a structural diagram of the floating component.

[0036] 1. Outer cylinder; 2. Cover body; 3. Inner cylinder; 4. Floating assembly; 5. Driving assembly; 6. Conveying assembly; 7. Steam channel; 8. Rotating sleeve; 9. Steam pipe; 11. Support frame; 12. Storage chamber; 13. Feed port; 14. Discharge port; 15. Discharge platform; 21. Gas outlet; 31. Reaction chamber; 32. Feed channel; 33. Leakage hole; 41. Buoyancy member; 42. Support column; 43. Support member; 51. Driving member; 52. Pulley b; 53. Belt; 61. Rotating shaft; 62. Auger; 63. Pulley a; 431. Filter hole; 621. Steam outlet. DETAILED DESCRIPTION

[0037] The technical solutions in the embodiments of the present invention are clearly and completely described below in conjunction with the accompanying drawings.

[0038] Embodiment 1

[0039] like Figures 1 to 6 As shown, a method for continuously producing battery-grade manganese sulfate using cobalt-nickel smelting residual liquid as raw material comprises:

[0040] Step 1, a feeding process, preheating the cobalt-nickel smelting residual liquid by a preheating device, and pumping the preheated cobalt-nickel smelting residual liquid into the inner tube 3 through the feed port 13 to complete the feeding;

[0041] Step 2, a heating crystallization process, wherein the driving component 5 drives the conveying component 6 to rotate, and the conveying component 6 drives the cobalt-nickel smelting residual liquid to be spirally conveyed upward, and steam is conveyed into the steam channel 7 through the steam pipe 9 to heat and crystallize the cobalt-nickel smelting residual liquid, and the cobalt-nickel smelting residual liquid and the manganese sulfate crystals are filtered and separated through the leakage hole 33 on the inner cylinder 3 to obtain manganese sulfate crystals, and the manganese sulfate crystals are conveyed to the floating component 4 for storage through the conveying component 6, and the cobalt-nickel smelting residual liquid enters the storage chamber 12 to drive the floating component 4 to float upward, drive the manganese sulfate crystals to float, and complete the unloading through the discharge port 14 and the discharge platform 15;

[0042] Step 3, pre-flash process, by centrifuging the separated manganese sulfate crystals to obtain centrifugal mother liquor and product salt, the centrifugal mother liquor is filtered and preheated again to enter the smelting process;

[0043] Step 4, the re-dissolution process, is to re-dissolve the product salt and preheat it, and then send it into the device for heating and crystallization again. The separated manganese sulfate crystals are centrifuged to obtain the centrifuged mother liquor and battery-grade manganese sulfate. The centrifuged mother liquor is filtered and preheated again to enter the re-smelting process.

[0044] It is worth mentioning here that the floating component 4 is slidably arranged in the storage chamber 12, the conveying component 6 is rotatably arranged in the inner cylinder 3, the steam channel 7 is opened in the conveying component 6, the inner cylinder 3 is loaded through the feed port 13, the conveying component 6 is driven to rotate by the driving component 5, the cobalt-nickel smelting residual liquid is driven by the conveying component 6 to spirally convey upward, the cobalt-nickel smelting residual liquid is heated and crystallized by inputting steam into the steam channel 7, the cobalt-nickel smelting residual liquid and manganese sulfate crystals are filtered and separated by the inner cylinder 3, the manganese sulfate crystals are stored by the floating component 4 and discharged by buoyancy, so that the cobalt-nickel smelting residual liquid in the inner cylinder 3 is evenly heated, the crystallization efficiency is improved, and the material can be discharged while crystallizing, thereby improving the production efficiency.

[0045] like Figure 3 As shown, in step 1, the switch at the feed port 13 is turned on, and the preheated cobalt-nickel smelting residual liquid is pumped into the inner tube 3 from the feed port 13, and then the switch at the feed port 13 is closed to complete the loading.

[0046] like Figure 3 As shown, in step 2, the driving member 51 drives the pulley b52 to rotate, the pulley b52 drives the belt 53 to make a rotational motion, the belt 53 drives the pulley a63 to rotate, the rotating shaft 61 drives the rotation in the inner tube 3, and the rotating shaft 61 drives the auger 62 to rotate, so as to spirally transport the cobalt-nickel smelting residual liquid upward.

[0047] like Figure 5 As shown, in step 2, steam is transported into the steam channel 7 through the steam pipe 9, and the steam moves to various locations of the auger 62 through the steam channel 7 to heat the cobalt-nickel smelting residual liquid, and performs heat preservation and aging, thereby achieving the purpose of heating crystallization.

[0048] like Figure 3 As shown, in step 2, the cobalt-nickel smelting residual liquid and the manganese sulfate crystals are filtered and separated through the leakage hole 33 on the inner hole 3 to obtain manganese sulfate crystals, and the manganese sulfate crystals are driven by the auger 62 to spirally rise and are sent to the support 43 for storage.

[0049] like Figure 3 As shown, in step 2, the cobalt-nickel smelting residual liquid is filtered through the leakage hole 33 and enters the storage chamber 12 to drive the buoyancy member 41 to float up, and the support member 43 is driven to float up by the buoyancy member 41, thereby driving the manganese sulfate crystals to float up, and the manganese sulfate crystals are discharged through the discharge port 14 and the discharge platform 15.

[0050] After step 2 is completed, a material taking process is also provided.

[0051] In the material taking process, the manganese sulfate crystals on the discharging platform 15 are collected by the collecting equipment and enter the next process.

[0052] Embodiment 2

[0053] like Figures 1 to 6 As shown, a device for continuously producing battery-grade manganese sulfate using cobalt-nickel smelting residual liquid as raw material comprises an outer cylinder 1, a cover body 2 and a support frame 11 arranged at the lower end of the outer cylinder 1, an inner cylinder 3 is arranged in the outer cylinder 1, a storage cavity 12 is arranged between the outer cylinder 1 and the inner cylinder 3, a floating component 4 is slidably arranged in the storage cavity 12, a reaction cavity 31 is opened in the inner cylinder 3, a driving component 5 is arranged on the cover body 2, an air outlet 21 is also arranged on the cover body 2, and a conveying component is rotatably arranged in the inner cylinder 3 6, a steam channel 7 is provided in the conveying component 6, a feed port 13 is provided at the lower end of the outer cylinder 1, the inner cylinder 3 is loaded through the feed port 13, the conveying component 6 is driven to rotate by the driving component 5, the cobalt-nickel smelting residual liquid is driven to spirally transport upward by the conveying component 6, the cobalt-nickel smelting residual liquid is heated and crystallized by inputting steam into the steam channel 7, the cobalt-nickel smelting residual liquid and the manganese sulfate crystals are filtered and separated by the inner cylinder 3, and the manganese sulfate crystals are stored by the floating component 4 and discharged by buoyancy.

[0054] It is worth mentioning here that the floating component 4 is slidably arranged in the storage chamber 12, the conveying component 6 is rotatably arranged in the inner cylinder 3, the steam channel 7 is opened in the conveying component 6, the inner cylinder 3 is loaded through the feed port 13, the conveying component 6 is driven to rotate by the driving component 5, the cobalt-nickel smelting residual liquid is driven by the conveying component 6 to spirally convey upward, the cobalt-nickel smelting residual liquid is heated and crystallized by inputting steam into the steam channel 7, the cobalt-nickel smelting residual liquid and manganese sulfate crystals are filtered and separated by the inner cylinder 3, the manganese sulfate crystals are stored by the floating component 4 and discharged by buoyancy, so that the cobalt-nickel smelting residual liquid in the inner cylinder 3 is evenly heated, the crystallization efficiency is improved, and the material can be discharged while crystallizing, thereby improving the production efficiency.

[0055] like Figure 3 , 5 As shown, the conveying assembly 6 includes a rotating shaft 61 rotatably arranged in the inner tube 3 and an auger 62 arranged on the rotating shaft 61. A pulley a63 is arranged at the upper end of the rotating shaft 61, and a steam outlet 621 is opened at the lower end of the auger 62.

[0056] In this example, steam can be discharged into the cobalt-nickel smelting residual liquid through the steam outlet 621 to heat it again for crystallization.

[0057] like Figure 2 As shown, a rotating sleeve 8 is fixedly provided on the upper end of the rotating shaft 61 , and a steam pipe 9 is connected to the upper end of the rotating sleeve 8 .

[0058] In this example, steam is transported into the steam channel 7 through the steam pipe 9, and the steam moves to various locations of the auger 62 through the steam channel 7 to heat the cobalt-nickel smelting residual liquid, thereby achieving the purpose of heating crystallization. By providing the rotating sleeve 8, it is possible to avoid the rotation of the rotating shaft 61 while driving the steam pipe 9 to rotate.

[0059] like Figure 6 As shown, the floating assembly 4 includes a buoyancy member 41 slidably disposed in the material storage chamber 12 , a support column 42 disposed on the buoyancy member 41 , and a support member 43 disposed on the support column 42 , wherein the support member 43 is provided with a plurality of filter holes 431 .

[0060] In this example, the filter holes 431 are provided to filter and separate the cobalt-nickel smelting residual liquid remaining on the support member 43 .

[0061] like Figure 3 As shown, the driving assembly 5 includes a driving member 51 arranged on the cover body 2, a pulley b52 driven by the driving member 51, and a belt 53 arranged between the pulley b52 and the pulley a63.

[0062] like Figure 4 As shown, a feed channel 32 is provided between the feed port 13 and the inner tube 3 .

[0063] like Figure 4 As shown, a plurality of discharge ports 14 are provided at the upper end of the outer cylinder 1 , and a discharge platform 15 is provided at the lower end of the discharge port 14 .

[0064] like Figure 3 , 4 As shown, the inner cylinder 3 is provided with a plurality of leakage holes 33 along the circumferential direction.

[0065] The working process is as follows:

[0066] Open the switch at the feed port 13, and pump the cobalt-nickel smelting residual liquid into the inner tube 3 from the feed port 13, and then close the switch at the feed port 13 to complete the feeding;

[0067] The driving member 51 drives the pulley b52 to rotate, the pulley b52 drives the belt 53 to make a rotary motion, the belt 53 drives the pulley a63 to rotate, drives the rotating shaft 61 to rotate in the inner tube 3, and drives the auger 62 to rotate through the rotating shaft 61, so as to spirally transport the cobalt-nickel smelting residual liquid upward;

[0068] Steam is transported into the steam channel 7 through the steam pipe 9, and the steam moves to various places of the auger 62 through the steam channel 7 to heat the cobalt-nickel smelting residual liquid, thereby achieving the purpose of heating crystallization, and the cobalt-nickel smelting residual liquid and the manganese sulfate crystals are filtered and separated through the leakage hole 33 on the inner hole 3 to obtain manganese sulfate crystals, and the manganese sulfate crystals are driven to spirally rise through the auger 62 and are sent to the support 43 for storage;

[0069] The cobalt-nickel smelting residual liquid is filtered through the leakage hole 33 and enters the storage chamber 12 to drive the buoyancy member 41 to float up, and the support member 43 is driven to float up by the buoyancy member 41, thereby driving the manganese sulfate crystals to float up, and the manganese sulfate crystals are discharged through the discharge port 14 and the discharge platform 15, and the manganese sulfate crystals on the discharge platform 15 are collected by the collection equipment and enter the next process.

[0070] Of course, in the present technical solution, those skilled in the art should understand that the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element may be one, while in another embodiment, the number of the element may be multiple, and the term "one" should not be understood as a limitation on the quantity.

[0071] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art under the technical guidance of the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A method for continuously producing battery-grade manganese sulfate using cobalt-nickel smelting residual liquid as raw material, characterized in that: include: Step 1, a feeding process, preheating the cobalt-nickel smelting residual liquid through a preheating device, and pumping the preheated cobalt-nickel smelting residual liquid into the inner tube (3) through the feeding port (13) to complete the feeding; Step 2, a heating and crystallization process, driving the conveying component (6) to rotate through the driving component (5), driving the cobalt-nickel smelting residual liquid to spirally convey upward through the conveying component (6), conveying steam into the steam channel (7) through the steam pipe (9) to heat and crystallize the cobalt-nickel smelting residual liquid, and the cobalt-nickel smelting residual liquid is crystallized through the leakage hole (33) on the inner tube (3). The manganese sulfate crystals are filtered and separated from the manganese sulfate crystals to obtain manganese sulfate crystals, which are then transported to the floating component (4) for storage via the transport component (6), and the cobalt-nickel smelting residual liquid enters the storage chamber (12) to drive the floating component (4) to float upward, driving the manganese sulfate crystals to float upward, and the material is discharged through the discharge port (14) and the discharge platform (15). In the second step, steam is transported into the steam channel (7) via the steam pipe (9), and the steam moves to various locations of the auger (62) through the steam channel (7) to heat the cobalt-nickel smelting residual liquid. The cobalt-nickel smelting residual liquid and the manganese sulfate crystals are filtered and separated through the leakage hole (33) on the inner cylinder (3) to obtain manganese sulfate crystals, and the manganese sulfate crystals are driven to spirally rise through the auger (62) and sent to the support member (43) for storage. The cobalt-nickel smelting residual liquid is filtered through the leakage hole (33) and enters the storage chamber (12) to drive the buoyancy member (41) to float up, and the support member (43) is driven to float up through the buoyancy member (41), thereby driving the manganese sulfate crystals to float up, and the manganese sulfate crystals are discharged through the discharge port. The material is discharged through the outlet (14) and the discharging platform (15); step 3, a pre-flash process, wherein the separated manganese sulfate crystals are centrifuged to obtain a centrifuged mother liquor and a product salt, and the centrifuged mother liquor is filtered and preheated again to enter the re-smelting process; step 4, a re-dissolving process, wherein the product salt is re-dissolved and preheated, and then sent to the device for heating and crystallization again, and the separated manganese sulfate crystals are centrifuged to obtain a centrifuged mother liquor and a battery-grade manganese sulfate, and the centrifuged mother liquor is filtered and preheated again to enter the re-smelting process.

2. The method for continuously producing battery-grade manganese sulfate using cobalt-nickel smelting residual liquid as raw material according to claim 1, characterized in that: In the step 1, the switch at the feed port (13) is turned on, and the preheated cobalt-nickel smelting residual liquid is pumped into the inner tube (3) from the feed port (13), and then the switch at the feed port (13) is turned off to complete the feeding.

3. The method for continuously producing battery-grade manganese sulfate using cobalt-nickel smelting residual liquid as raw material according to claim 1, characterized in that: In the step 2, the driving member (51) drives the pulley b (52) to rotate, the pulley b (52) drives the belt (53) to rotate, the belt (53) drives the pulley a (63) to rotate, the rotating shaft (61) drives the auger (62) to rotate, and the cobalt-nickel smelting residual liquid is spirally transported upward.

4. The method for continuously producing battery-grade manganese sulfate using cobalt-nickel smelting residual liquid as raw material according to claim 1, characterized in that: After the step 2 is completed, a material taking process is also provided.

5. The method for continuously producing battery-grade manganese sulfate using cobalt-nickel smelting residual liquid as raw material according to claim 4, characterized in that: In the material taking process, the manganese sulfate crystals on the discharging platform (15) are collected by a collecting device and sent to the next process for treatment.

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