Sulfuric acid liquid-phase acidolysis device

Abstract

The utility model provides a sulfuric acid liquid phase acidolysis device which comprises an inner tank, the surface of the inner tank is sleeved with an outer tank, the top of the inner tank is fixedly connected with a motor, the output end of the motor is fixedly connected with a first transmission shaft, and the bottom of the first transmission shaft penetrates into the inner tank; a feeding hole is formed in one side of the top of the inner tank, and a heating structure is arranged between the inner tank and the outer tank; the bottom of the surface of the first transmission shaft is movably connected with a stirring structure. Through the arrangement of the inner tank, the outer tank, the motor, the first transmission shaft, the feeding hole, the heating structure, the stirring structure, the grading structure, the adjusting structure and the discharging pipe, the problems that the reaction materials of the existing sulfuric acid liquid-phase acidolysis device are mixed at one time without grading, heat is intensively released to possibly cause local overheating, the burden of a cooling system is increased, and the service life of the cooling system is prolonged are solved. And dangerous conditions may be caused.

Description

Technical Field

[0001] This utility model relates to the field of sulfuric acid liquid-phase acidolysis technology, and in particular to a sulfuric acid liquid-phase acidolysis device. Background Technology

[0002] Liquid-phase acid hydrolysis of sulfuric acid is a crucial step in the sulfuric acid process for titanium dioxide production. It primarily involves the decomposition of ilmenite using sulfuric acid in a liquid phase. The decomposition of ilmenite by sulfuric acid is generally considered to proceed according to a specific reaction formula, producing products such as titanium sulfate and titanium oxysulfate. The proportions of these products depend on the acid hydrolysis conditions, such as sulfuric acid concentration, temperature, and reaction time. Compared to solid-phase acid hydrolysis, liquid-phase acid hydrolysis offers significant advantages: Environmental friendliness: Liquid-phase acid hydrolysis can significantly reduce the emission of waste acid and waste gas, which is beneficial to environmental protection. Reaction efficiency: Under appropriate conditions, liquid-phase acid hydrolysis exhibits a high reaction rate and acid hydrolysis rate. Product quality: The titanium solution obtained from liquid-phase acid hydrolysis has stable quality, which is beneficial for subsequent processes.

[0003] In existing technologies, sulfuric acid liquid-phase acidolysis is usually an exothermic process. If the reactants are mixed all at once without being carried out in stages, the concentrated release of heat may lead to local overheating, increasing the burden on the cooling system and potentially causing dangerous situations such as a sudden increase in pressure or decomposition of substances. Without staged treatment, the product may become more difficult to separate from other unreacted raw materials or byproducts, thus requiring more complex purification processes and increasing the cost and difficulty of subsequent processing. Utility Model Content

[0004] To address the shortcomings of existing technologies, the purpose of this invention is to provide a sulfuric acid liquid-phase acidolysis device that facilitates graded processing and mixing. This addresses the problems of existing sulfuric acid liquid-phase acidolysis devices, which involve mixing reactants all at once without phased processing, resulting in concentrated heat release that may lead to localized overheating, increased burden on the cooling system, and potential dangerous situations.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution: a sulfuric acid liquid-phase acidolysis device, including an inner tank, an outer tank sleeved on the surface of the inner tank, a motor fixedly connected to the top of the inner tank, a first drive shaft fixedly connected to the output end of the motor, and the bottom of the first drive shaft penetrating into the interior of the inner tank;

[0006] A feed inlet is provided on one side of the top of the inner tank, and a heating structure is provided between the inner tank and the outer tank;

[0007] A stirring structure is movably connected to the bottom of the surface of the first drive shaft. A grading structure is fitted on the top and bottom of the surface of the stirring structure. The surface of the grading structure is fixedly connected to the inner wall of the inner tank. An adjustment structure is fitted on the surface of the stirring structure.

[0008] The bottom of the inner tank is fixedly connected to a discharge pipe.

[0009] Furthermore, the stirring structure includes a limiting plate, the top of which is fixedly connected to the bottom of the first drive shaft, a second drive shaft is sleeved on the surface of the limiting plate, a groove for sliding of the limiting plate is provided inside the second drive shaft, and stirring rods are fixedly connected to the top and bottom of the surface of the second drive shaft, the surface of which is used in conjunction with the grading structure.

[0010] Furthermore, the grading structure includes a grading plate with a concave center. The surface of the grading plate is fixedly connected to the inner wall of the inner tank. A first partition is provided inside the grading plate, and the interior of the first partition is fixedly connected to the surface of the second drive shaft. A temporary storage box is fixedly connected to the bottom of the grading plate. The bottom of the temporary storage box has an opening, and a second partition for sealing the opening is provided at the bottom of the temporary storage box. The interior of the second partition is fixedly connected to the surface of the second drive shaft.

[0011] Furthermore, an auger is fixedly connected to the bottom of the surface of the second drive shaft, and a fixing rod is provided at the interval of the auger. The fixing rod is fixedly connected to the surface of the second drive shaft on the side near the second drive shaft. There are several fixing rods, which are evenly distributed.

[0012] Furthermore, the interior of the adjustment structure is fixedly connected to the top of the surface of the second drive shaft, and a return spring is fixedly connected to the bottom of the limiting plate, with the bottom of the return spring fixedly connected to the bottom of the inner wall of the second drive shaft.

[0013] Furthermore, the adjustment structure includes a lifting plate, the interior of which is fixedly connected to the top of the surface of the second drive shaft. A lifting frame is provided on the top of the lifting plate, and a threaded sleeve is fixedly connected inside the lifting frame. A screw is threadedly connected inside the threaded sleeve, and the top of the screw penetrates through the inner tank and extends to the top of the inner tank. A support wheel is fixedly connected to the bottom of the lifting frame, and the surface of the support wheel contacts and engages with the bottom of the lifting plate. There are several support wheels, which are evenly distributed.

[0014] The beneficial effects of this utility model are:

[0015] 1. This utility model, by setting up an inner tank, an outer tank, a motor, a first drive shaft, a feed inlet, a heating structure, a stirring structure, a grading structure, an adjusting structure, and a discharge pipe, can significantly improve mixing efficiency and mixing quality. The combined design of the inner and outer tanks not only provides a safe reaction environment for the materials, but also allows the heating structure inside the outer tank to uniformly and quickly heat the materials in the inner tank, ensuring consistent reaction temperature. The motor drives the first drive shaft to rotate the stirring structure, efficiently mixing the materials and improving mixing uniformity. The grading structure allows the stirring structure to form a multi-layered stirring effect during rotation, further improving mixing efficiency. The fixed connection between the grading structure and the inner wall of the inner tank ensures the stable operation of the stirring structure, avoiding shaking and noise during the stirring process. The presence of the adjusting structure allows for easy opening or closing of the grading structure, facilitating the descent of materials and gradual reaction.

[0016] 2. By setting up a stirring structure, this utility model can ensure the stability and efficiency of the stirring process. The fixed connection between the limiting plate and the first drive shaft provides a solid foundation for the stirring structure. The second drive shaft is sleeved on the limiting plate, which facilitates the up and down movement of the second drive shaft, thereby facilitating the sealing and opening of the graded structure.

[0017] 3. This utility model, through the setting of a grading structure, can achieve effective grading and temporary storage of materials. The concave design in the middle of the grading plate not only increases the grading effect but also allows the materials to flow more smoothly during the grading process. The fixed connection between the grading plate and the inner wall of the inner tank ensures the stability and durability of the structure. The fixed connection between the first partition and the second drive shaft allows the grading process to move up and down via the drive shaft. The temporary storage box and its bottom opening design can temporarily store the graded materials, while the second partition is used to seal the opening to prevent the materials from flowing out when not needed. The second partition is also fixedly connected to the second drive shaft, so that the opening and closing of the opening can be controlled by the drive shaft.

[0018] 4. By setting up an auger and fixing rods, this utility model enhances the connection stability between the auger and the second drive shaft, ensuring that the auger is not prone to deviation or loosening during rotation, thereby improving the operating efficiency and stability of the equipment. At the same time, the auger can lift the material at the bottom upwards, improving the efficiency of material mixing, and the evenly distributed fixing rods facilitate the mixing of materials.

[0019] 5. By setting an adjustment structure and a return spring, this utility model can effectively achieve the functions of automatic adjustment and stable support. The return spring can facilitate the reset of the second drive shaft when it is not under force.

[0020] 6. This utility model, through the setting of an adjustment structure, can easily realize the lifting and lowering operation of the inner tank. By rotating the screw, the screw sleeve and the lifting frame and lifting plate fixedly connected to it can be driven to move up and down along the screw, thereby driving the second transmission shaft to lift and lower. The setting of the support wheel can increase the stability and support force between the lifting plate and the lifting frame, ensuring the smoothness and safety of the lifting process. The evenly distributed support wheel can also effectively disperse the pressure and extend the service life of the equipment. Attached Figure Description

[0021] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0022] Figure 1 This is a schematic diagram of the structure of this utility model;

[0023] Figure 2 This is a cross-sectional view of the inner tank;

[0024] Figure 3 This is a cross-sectional view of the grading plate;

[0025] Figure 4 To adjust the 3D structure;

[0026] Figure 5 This is a sectional view of the second drive shaft.

[0027] In the diagram: 1. Inner tank; 2. Outer tank; 3. Motor; 4. First drive shaft; 5. Feed inlet; 6. Heating structure; 7. Discharge pipe; 8. Limiting plate; 9. Second drive shaft; 10. Stirring rod; 11. Grading plate; 12. First partition; 13. Temporary storage box; 14. Opening; 15. Second partition; 16. Screw; 17. Fixing rod; 18. Return spring; 19. Lifting plate; 20. Lifting frame; 21. Screw sleeve; 22. Screw; 23. Support wheel. Detailed Implementation

[0028] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0029] Please see Figure 1 , Figure 1 This is a schematic diagram of the structure of this utility model.

[0030] A sulfuric acid liquid-phase acidolysis device includes an inner tank 1, an outer tank 2 fitted on the surface of the inner tank 1, a motor 3 fixedly connected to the top of the inner tank 1, a first drive shaft 4 fixedly connected to the output end of the motor 3, and the bottom of the first drive shaft 4 penetrating into the interior of the inner tank 1.

[0031] A feed inlet 5 is provided on one side of the top of the inner tank 1, and a heating structure 6 is provided between the inner tank 1 and the outer tank 2;

[0032] A stirring structure is movably connected to the bottom of the surface of the first drive shaft 4. A grading structure is fitted on the top and bottom of the surface of the stirring structure. The surface of the grading structure is fixedly connected to the inner wall of the inner tank 1. An adjustment structure is fitted on the surface of the stirring structure.

[0033] The bottom of the inner tank 1 is fixedly connected to a discharge pipe 7.

[0034] Please see Figure 2 , Figure 3 , Figure 4 and Figure 5 , Figure 2 This is a cross-sectional view of the inner tank; Figure 3 This is a cross-sectional view of the grading plate; Figure 4 To adjust the 3D structure; Figure 5 This is a sectional view of the second drive shaft.

[0035] The stirring structure includes a limiting plate 8, the top of which is fixedly connected to the bottom of the first drive shaft 4. A second drive shaft 9 is fitted onto the surface of the limiting plate 8. The interior of the second drive shaft 9 has a sliding groove for the limiting plate 8 to slide. Stirring rods 10 are fixedly connected to the top and bottom of the surface of the second drive shaft 9. The surface of the stirring rods 10 works in conjunction with the grading structure to ensure stability and efficiency during the stirring process. The fixed connection between the limiting plate 8 and the first drive shaft 4 provides a solid foundation for the stirring structure. The second drive shaft 9, fitted onto the limiting plate 8, allows for easy up-and-down movement of the second drive shaft 9, thereby facilitating the sealing and opening of the grading structure.

[0036] The grading structure includes a grading plate 11 with a recessed center. The surface of the grading plate 11 is fixedly connected to the inner wall of the inner tank 1. A first partition 12 is provided inside the grading plate 11, and the interior of the first partition 12 is fixedly connected to the surface of the second drive shaft 9. A temporary storage box 13 is fixedly connected to the bottom of the grading plate 11. An opening 14 is provided at the bottom of the temporary storage box 13, and a second partition 15 for sealing the opening 14 is provided at the bottom of the temporary storage box 13. The interior of the second partition 15 is fixedly connected to the surface of the second drive shaft 9. This structure enables effective grading and temporary storage of materials. The recessed design in the center of the grading plate 11 not only... The grading effect is enhanced, and the material can flow more smoothly during the grading process. The fixed connection between the grading plate 11 and the inner wall of the inner tank 1 ensures the stability and durability of the structure. The fixed connection between the first partition 12 and the second drive shaft 9 allows the grading process to move up and down via the drive shaft. The temporary storage box 13 and its bottom opening 14 are designed to temporarily store the graded material, while the second partition 15 is used to seal the opening 14 to prevent the material from flowing out when not needed. The second partition 15 is also fixedly connected to the second drive shaft 9, so that the opening and closing of the opening 14 can be controlled by the drive shaft.

[0037] A screw conveyor 16 is fixedly connected to the bottom of the surface of the second drive shaft 9. Fixing rods 17 are provided at the intervals of the screw conveyor 16. The side of the fixing rods 17 closest to the second drive shaft 9 is fixedly connected to the surface of the second drive shaft 9. There are several fixing rods 17, which are evenly distributed to enhance the connection stability between the screw conveyor 16 and the second drive shaft 9. This ensures that the screw conveyor 16 is not prone to deviation or loosening during rotation, thereby improving the operating efficiency and stability of the equipment. At the same time, the screw conveyor 16 can lift the material at the bottom upwards, improving the efficiency of material mixing. The evenly distributed fixing rods 17 facilitate the mixing of materials.

[0038] The internal structure of the adjustment structure is fixedly connected to the top of the surface of the second drive shaft 9. The bottom of the limiting plate 8 is fixedly connected to the return spring 18. The bottom of the return spring 18 is fixedly connected to the bottom of the inner wall of the second drive shaft 9, which can effectively realize the functions of automatic adjustment and stable support. The return spring 18 can facilitate the reset of the second drive shaft 9 when it is not under force.

[0039] The adjustment structure includes a lifting plate 19, the interior of which is fixedly connected to the top of the surface of the second drive shaft 9. A lifting frame 20 is provided on the top of the lifting plate 19, and a threaded sleeve 21 is fixedly connected inside the lifting frame 20. A screw 22 is threadedly connected inside the threaded sleeve 21. The top of the screw 22 passes through the inner tank 1 and extends to the top of the inner tank 1. A support wheel 23 is fixedly connected to the bottom of the lifting frame 20. The surface of the support wheel 23 contacts and engages with the bottom of the lifting plate 19. There are several support wheels 23, which are evenly distributed to facilitate the lifting and lowering operation of the inner tank 1. By rotating the screw 22, the threaded sleeve 21 and the lifting frame 20 and lifting plate 19 fixedly connected to it can be driven to move up and down along the screw 22, thereby driving the second drive shaft 9 to lift and lower. The setting of the support wheels 23 can increase the stability and support force between the lifting plate 19 and the lifting frame 20, ensuring the smoothness and safety of the lifting process. The evenly distributed support wheels 23 can also effectively disperse pressure and extend the service life of the equipment.

[0040] Working Principle: During use, material enters the inner tank 1 through the feed inlet 5. The motor 3 starts, and its output drives the first drive shaft 4 to rotate. The first drive shaft 4 drives the stirring structure to rotate, stirring the material. The limiting plate 8 in the stirring structure is fixedly connected to the first drive shaft 4, providing stable support for the stirring structure. The second drive shaft 9 is sleeved on the limiting plate 8 and can rotate with the stirring structure. At the same time, the stirring rod 10 on the surface of the second drive shaft 9 stirs the material, ensuring stability and efficiency during the stirring process. The grading plate 11 in the grading structure is fixedly connected to the inner wall of the inner tank 1. The concave design in the middle of the grading plate 11 enhances the grading effect, allowing the material to flow more smoothly during the grading process. The first partition plate 12 is fixedly connected to the second drive shaft 9. As the screw 22 rotates, the screw 22 drives the screw sleeve 21 and the lifting frame. 20. The support wheel 23 and the lifting plate 19 move up and down, thereby driving the grading plate 11 to move up and down. When the first partition 12 is not blocked in the grading plate 11 and the second partition 15 is blocked in the temporary storage box 13, the material falls into the temporary storage box 13. When the first partition 12 is blocked in the grading plate 11 and the second partition 15 is not blocked in the temporary storage box 13, the material falls to the lower level, realizing the purpose of conveying the material to the lower level. The auger 16 and the fixed rod 17 on the surface of the second drive shaft 9 enhance the connection stability of the mixing structure. At the same time, the auger 16 can lift the material at the bottom upward, improving the efficiency of material mixing. The lifting plate 19 in the adjustment structure is fixedly connected to the second drive shaft 9. By rotating the screw 22, the screw sleeve 21 and the lifting frame 20 and the lifting plate 19 fixedly connected to it can be driven to move up and down along the screw 22, thereby driving the second drive shaft 9 to rise and fall. The reset spring 18 allows the second drive shaft 9 to reset easily when no force is applied. The support wheel 23 increases the stability and support between the lifting plate 19 and the lifting frame 20, ensuring the smoothness and safety of the lifting process. After mixing and grading are completed, the discharge pipe 7 is opened, and the material is discharged from the bottom of the inner tank 1, completing the entire workflow.

[0041] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0042] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A sulfuric acid liquid-phase acidolysis apparatus, characterized in that: The inner tank (1) is covered with an outer tank (2). A motor (3) is fixedly connected to the top of the inner tank (1). A first drive shaft (4) is fixedly connected to the output end of the motor (3). The bottom of the first drive shaft (4) extends into the interior of the inner tank (1). A feed inlet (5) is provided on one side of the top of the inner tank (1), and a heating structure (6) is provided between the inner tank (1) and the outer tank (2). A stirring structure is movably connected to the bottom of the surface of the first drive shaft (4). A grading structure is fitted on the top and bottom of the surface of the stirring structure. The surface of the grading structure is fixedly connected to the inner wall of the inner tank (1). An adjustment structure is fitted on the surface of the stirring structure. The bottom of the inner tank (1) is fixedly connected to a discharge pipe (7).

2. The sulfuric acid liquid-phase acidolysis apparatus according to claim 1, characterized in that: The stirring structure includes a limiting plate (8), the top of which is fixedly connected to the bottom of the first drive shaft (4), and a second drive shaft (9) is sleeved on the surface of the limiting plate (8). The interior of the second drive shaft (9) is provided with a sliding groove for the limiting plate (8) to slide. A stirring rod (10) is fixedly connected to the top and bottom of the surface of the second drive shaft (9). The surface of the stirring rod (10) is used in conjunction with the grading structure.

3. The sulfuric acid liquid-phase acidolysis apparatus according to claim 2, characterized in that: The grading structure includes a grading plate (11), which is recessed in the middle. The surface of the grading plate (11) is fixedly connected to the inner wall of the inner tank (1). A first partition (12) is provided inside the grading plate (11). The interior of the first partition (12) is fixedly connected to the surface of the second drive shaft (9). A temporary storage box (13) is fixedly connected to the bottom of the grading plate (11). An opening (14) is provided at the bottom of the temporary storage box (13). A second partition (15) for sealing the opening (14) is provided at the bottom of the temporary storage box (13). The interior of the second partition (15) is fixedly connected to the surface of the second drive shaft (9).

4. The sulfuric acid liquid-phase acidolysis apparatus according to claim 2, characterized in that: A screw conveyor (16) is fixedly connected to the bottom of the surface of the second drive shaft (9). A fixing rod (17) is provided at the interval of the screw conveyor (16). The fixing rod (17) is fixedly connected to the surface of the second drive shaft (9) on the side close to the second drive shaft (9). There are several fixing rods (17) and they are evenly distributed.

5. The sulfuric acid liquid-phase acidolysis apparatus according to claim 2, characterized in that: The interior of the adjustment structure is fixedly connected to the top of the surface of the second transmission shaft (9), and a reset spring (18) is fixedly connected to the bottom of the limiting plate (8). The bottom of the reset spring (18) is fixedly connected to the bottom of the inner wall of the second transmission shaft (9).

6. The sulfuric acid liquid-phase acidolysis apparatus according to claim 5, characterized in that: The adjustment structure includes a lifting plate (19), the interior of which is fixedly connected to the top of the surface of the second transmission shaft (9). A lifting frame (20) is provided on the top of the lifting plate (19). A screw sleeve (21) is fixedly connected inside the lifting frame (20). A screw rod (22) is threadedly connected inside the screw sleeve (21). The top of the screw rod (22) passes through the inner tank (1) and extends to the top of the inner tank (1). A support wheel (23) is fixedly connected to the bottom of the lifting frame (20). The surface of the support wheel (23) contacts and engages with the bottom of the lifting plate (19). There are several support wheels (23) that are evenly distributed.

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