Pretreatment stirring kettle for titanium dioxide production
By designing a pretreatment mixing tank and adopting spray feeding and rotating stirring blades, the problem of raw material adhesion was solved, achieving uniform mixing and safe cleaning of materials in titanium dioxide production, thus improving production efficiency and safety.
Patent Information
- Application Number
- CN202422939625.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-28
- Publication Date
- 2025-11-14
- Estimated Expiration
- 2034-11-28
AI Technical Summary
In current titanium dioxide production, raw materials tend to adhere to the walls of the mixing vessel during pretreatment, leading to material loss and equipment blockage, and the cleaning process is highly dangerous.
Design a pretreatment mixing tank equipped with a spray feeding mechanism and a stirring mechanism. Uniform mixing is achieved through spray feeding and rotating stirring blades. It is also equipped with a grinding component and a cleaning scraper to prevent material adhesion and improve mixing efficiency.
It effectively avoids material adhesion, reduces losses, lowers cleaning risks, improves mixing uniformity, and provides high-quality raw materials for subsequent titanium dioxide production.
Smart Images
Figure CN223542979U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of titanium dioxide production and preparation technology, and specifically to a pretreatment stirring tank for titanium dioxide production. Background Technology
[0002] Titanium dioxide is one of the most important inorganic pigments and chemical raw materials. Its production methods are generally divided into the sulfuric acid process and the chloride process. The sulfuric acid process is a common and traditional production method. Its steps generally include: titanium concentrate reacts with concentrated sulfuric acid to produce titanium oxysulfate, which is then settled, crystallized, and hydrolyzed to produce metatitanic acid. The metatitanic acid is washed, bleached, washed again, salted, and calcined to obtain crude rutile titanium dioxide. The crude titanium dioxide is then wet-milled with a dispersant to obtain rutile titanium dioxide slurry, which is then sand-milled, coated, and powdered to obtain the final product.
[0003] In existing technologies, raw materials are usually pretreated before preparation to ensure uniform mixing of reactants, thereby improving yield and product quality. Currently, the domestic pretreatment process involves adding sulfuric acid into a premixed reactor, starting stirring, and then adding metered mineral powder into the reactor. However, the mineral powder tends to stick to the wet reactor wall or the stirrer when being added. Long-term accumulation of mineral powder mixed with a small amount of sulfuric acid will react to produce hard solids, clogging the reactor and causing material loss. It also requires a lot of manpower for cleaning. Since there is sulfuric acid in the reactor, there is also a risk of being burned by the acid during the cleaning process. Utility Model Content
[0004] This invention addresses the problems of existing technologies by providing a pretreatment stirring vessel for titanium dioxide production.
[0005] The objective of this utility model can be achieved through the following technical solution: A pretreatment mixing tank for titanium dioxide production, comprising: a mixing tank body, a spray feeding mechanism disposed at the upper end of the mixing tank body chamber, and a stirring mechanism. The stirring mechanism includes a stirring motor fixedly disposed at the upper end of the mixing tank body, a stirring shaft rotatably disposed within the mixing tank body, and stirring blades fixedly disposed on the stirring shaft. The upper end of the stirring shaft penetrates through the top wall of the mixing tank body and is drivenly connected to the output end of the stirring motor. The spray feeding mechanism includes a feeding pipe, an annular spray pipe connected to the feeding pipe, and nozzles disposed on the annular spray pipe. A shock-absorbing component is disposed on the feeding pipe.
[0006] In a further improvement, a grinding and filtering plate is provided inside the stirring vessel, and a grinding assembly is provided on the stirring shaft. The grinding assembly includes a transmission sleeve fixedly mounted on the stirring shaft and a grinding roller rotatably mounted on the transmission sleeve.
[0007] In a further improvement, the stirring blades are provided in two sets, with the two sets of stirring blades respectively located on the upper and lower sides of the grinding and filtering plate.
[0008] In a further improvement, the damping assembly includes a limiting ring fixedly mounted on the feed pipe, a positioning ring slidably mounted on the feed pipe, and a spring-damped damper disposed between the limiting ring and the positioning ring.
[0009] A further improvement is that a cleaning scraper is provided on the stirring shaft, and the cleaning scraper abuts against the inner wall of the stirring vessel.
[0010] In a further improvement, the annular spray pipe is provided with a support frame that abuts against the inner wall of the mixing vessel, and a rubber sleeve is fitted on the support frame.
[0011] As a further improvement, the mixing vessel is provided with a feed inlet and a discharge outlet at its upper and lower ends, respectively.
[0012] Compared with the prior art, the present invention has the following beneficial effects:
[0013] 1. In actual use, the present invention first pours titanium concentrate powder and concentrated sulfuric acid into the mixing tank, starts the stirring motor, drives the stirring shaft and stirring blades to rotate, and stirs the titanium concentrate powder and concentrated sulfuric acid in the mixing tank. At the same time, the concentrated sulfuric acid is transported to the annular spray pipe through the feed pipe. The nozzle sprays the concentrated sulfuric acid evenly onto the inner wall of the mixing tank, realizing the addition of concentrated sulfuric acid during the stirring process. At the same time, the spraying method washes the inner wall of the mixing tank, avoiding some mineral powder from adhering to the inner wall of the mixing tank and causing material loss. Meanwhile, the cleaning scraper continuously removes the deposits on the tank wall during the stirring process, keeping the tank wall clean.
[0014] 2. In this invention, after the raw materials are added to the mixing tank, the stirring motor starts, and the stirring shaft drives the stirring blades and grinding components to rotate. The stirring blades are responsible for mixing the raw materials, while the grinding rollers, driven by the transmission sleeve, contact the grinding filter plate to disperse the titanium concentrate powder, improve the mixing efficiency, avoid the presence of excessively large titanium concentrate particles in the mixture, promote the uniform mixing of materials, and provide better raw materials for subsequent titanium dioxide production steps. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present utility model;
[0016] Figure 2 This is a schematic diagram of the structure of Embodiment 2 of the present invention;
[0017] Figure 3 This is a schematic diagram of the spray feeding mechanism of this utility model;
[0018] Figure 4 This is a top view of the grinding assembly of this utility model.
[0019] In the diagram, 1. Mixing vessel body; 11. Grinding filter plate; 12. Feed inlet; 13. Discharge outlet; 2. Spray feeding mechanism; 21. Feeding pipe; 22. Annular spray pipe; 23. Nozzle; 24. Support frame; 3. Mixing mechanism; 31. Mixing motor; 32. Mixing shaft; 33. Mixing blades; 34. Cleaning scraper; 4. Vibration damping assembly; 41. Limiting ring; 42. Positioning ring; 43. Spring damping shock absorber; 5. Grinding assembly; 51. Transmission sleeve; 52. Grinding roller. Detailed Implementation
[0020] In the description of this utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0021] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0022] The following is a description of the embodiments and appendices. Figures 1-4 The technical solution of this utility model will be further described below.
[0023] Example 1
[0024] A pretreatment mixing tank for titanium dioxide production includes: a mixing tank body 1, a spray feeding mechanism 2 disposed at the upper end of the chamber of the mixing tank body 1, and a mixing mechanism 3. The mixing mechanism 3 includes a stirring motor 31 fixedly disposed at the upper end of the mixing tank body 1, a stirring shaft 32 rotatably disposed within the mixing tank body 1, and stirring blades 33 fixedly disposed on the stirring shaft 32. The upper end of the stirring shaft 32 passes through the top wall of the mixing tank body 1 and is drivenly connected to the output end of the stirring motor 31. The spray feeding mechanism 2 includes a feeding pipe 21, an annular spray pipe 22 connected to the feeding pipe 21, and nozzles 23 disposed on the annular spray pipe 22. A shock-absorbing component 4 is disposed on the feeding pipe 21.
[0025] like Figures 1-4As shown, in actual use, concentrated sulfuric acid and titanium concentrate powder are first poured into the mixing vessel 1. The stirring motor 31 is started, driving the stirring shaft 32 and stirring blades 33 to rotate, stirring the titanium concentrate powder and concentrated sulfuric acid in the mixing vessel 1. At the same time, concentrated sulfuric acid is transported to the annular spray pipe 22 through the feed pipe 21. The nozzle 23 sprays the concentrated sulfuric acid evenly onto the inner wall of the mixing vessel 1, realizing the addition of concentrated sulfuric acid during the stirring process. At the same time, the spraying method is used to rinse the inner wall of the mixing vessel 1, avoiding some mineral powder adhering to the inner wall of the mixing vessel 1 and causing material loss.
[0026] Example 2
[0027] The difference between Example 2 and Example 1 is that a grinding and filtering plate 11 is provided inside the stirring vessel 1, and a grinding assembly 5 is provided on the stirring shaft 32. The grinding assembly 5 includes a transmission sleeve 51 fixedly mounted on the stirring shaft 32 and a grinding roller 52 rotatably mounted on the transmission sleeve 51.
[0028] Specifically, such as Figure 2 As shown, after the raw materials are added into the mixing vessel 1, the stirring motor 31 starts, and the stirring shaft 32 drives the stirring blades 33 and the grinding assembly 5 to rotate. The stirring blades 33 are responsible for mixing the raw materials, while the grinding roller 52, driven by the transmission sleeve 51, contacts the grinding filter plate 11 to disperse the titanium concentrate powder, improve the mixing efficiency, avoid the presence of excessively large titanium concentrate particles in the mixture, promote the uniform mixing of materials, and provide better raw materials for subsequent titanium dioxide production steps.
[0029] As a further preferred embodiment, the stirring blades 33 are provided in two sets, and the two sets of stirring blades 33 are respectively provided on the upper and lower sides of the grinding filter plate 11.
[0030] As a further preferred embodiment, the shock absorption assembly 4 includes a limiting ring 41 fixedly disposed on the feed pipe 21, a positioning ring 42 slidably disposed on the feed pipe 21, and a spring damping shock absorber 43 disposed between the limiting ring 41 and the positioning ring 42. The shock absorption assembly 4 reduces the vibration of the spray feeding mechanism 2, preventing the spray feeding mechanism 2 from rubbing against the mixing tank body 1 during use, thus avoiding damage to the equipment.
[0031] As a further preferred embodiment, a cleaning scraper 34 is provided on the stirring shaft 32. The cleaning scraper 34 abuts against the inner wall of the stirring vessel 1. During the stirring process, the cleaning scraper 34 continuously removes the deposits on the vessel wall and keeps the vessel wall clean.
[0032] As a further preferred embodiment, the annular spray pipe 22 is provided with a support frame 24 that abuts against the inner wall of the stirring vessel 1, and a rubber sleeve is fitted on the support frame 24.
[0033] As a further preferred embodiment, the upper and lower ends of the mixing vessel 1 are respectively provided with a feed inlet 12 and a discharge outlet 13.
[0034] The preferred embodiments of this utility model have been described in detail above. It should be understood that those skilled in the art can make numerous modifications and variations based on the concept of this utility model without creative effort. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of this utility model through logical analysis, reasoning, or limited experimentation on the basis of existing technology should be within the scope of protection defined by the claims.
Claims
1. A pretreatment stirring tank for titanium dioxide production, characterized in that, include: The mixing vessel includes a mixing tank body, a spray feeding mechanism disposed at the upper end of the mixing tank body chamber, and a mixing mechanism. The mixing mechanism includes a stirring motor fixedly disposed at the upper end of the mixing tank body, a stirring shaft rotatably disposed within the mixing tank body, and stirring blades fixedly disposed on the stirring shaft. The upper end of the stirring shaft passes through the top wall of the mixing tank body and is drivenly connected to the output end of the stirring motor. The spray feeding mechanism includes a feeding pipe, an annular spray pipe connected to the feeding pipe, and nozzles disposed on the annular spray pipe. A shock-absorbing component is disposed on the feeding pipe.
2. The pretreatment stirring tank for titanium dioxide production according to claim 1, characterized in that, The mixing vessel is equipped with a grinding and filtering plate inside, and a grinding assembly is provided on the stirring shaft. The grinding assembly includes a transmission sleeve fixedly mounted on the stirring shaft and a grinding roller rotatably mounted on the transmission sleeve.
3. The pretreatment stirring tank for titanium dioxide production according to claim 2, characterized in that, The stirring blades are provided in two sets, which are respectively located on the upper and lower sides of the grinding and filtering plate.
4. A pretreatment stirred tank for titanium dioxide production according to claim 1 or 2, characterized in that, A cleaning scraper is provided on the stirring shaft, and the cleaning scraper abuts against the inner wall of the stirring vessel.
5. A pretreatment stirring tank for titanium dioxide production according to claim 1 or 2, characterized in that, The damping assembly includes a limiting ring fixedly mounted on the feed pipe, a positioning ring slidably mounted on the feed pipe, and a spring-damped damper disposed between the limiting ring and the positioning ring.
6. The pretreatment stirred tank for titanium dioxide production according to claim 1, characterized in that, The annular spray pipe is equipped with a support frame that abuts against the inner wall of the mixing vessel, and a rubber sleeve is fitted on the support frame.
7. A pretreatment stirred tank for titanium dioxide production according to claim 1 or 2, characterized in that, The mixing vessel is provided with a feed inlet and a discharge outlet at its upper and lower ends, respectively.