Sulfuric acid leaching reaction device for preparing titanium dioxide

Abstract

The utility model discloses a sulfuric acid leaching reaction device for preparing titanium dioxide. The sulfuric acid leaching reaction device comprises a reaction kettle, a mounting frame arranged at the top of the reaction kettle, a transmission mechanism arranged in the mounting frame, and a stirring mechanism arranged in the reaction kettle and fixedly mounted with the transmission mechanism, the mounting frame is fixedly connected to the upper surface of the reaction kettle, and the transmission mechanism comprises a motor, a first gear arranged in the mounting frame and a plurality of second gears arranged on the circumferential outer wall of the first gear; the motor is fixedly connected to the upper surface of the mounting frame; the first gear is driven by the motor to rotate so as to drive the plurality of second gears meshed with the first gear to synchronously rotate, so that not only is the effective transmission of power realized, but also the forward rotation stirring of the stirring blades and the reverse rotation stirring of the reverse rotation blades are realized, and the mixing effect of materials in the reaction kettle is greatly enhanced in a forward and reverse rotation combined stirring mode; and the uniformity and high efficiency of the sulfuric acid leaching reaction are ensured, so that the preparation efficiency and quality of titanium dioxide are improved.

Description

Technical Field

[0001] This utility model relates to the technical field of titanium dioxide, and more particularly to a sulfuric acid leaching reaction apparatus for the preparation of titanium dioxide. Background Technology

[0002] Titanium dioxide, a key inorganic chemical pigment, is mainly composed of titanium dioxide and possesses stable chemical properties and unique physical characteristics. It exists in nature in three crystalline forms: rutile, anatase, and tack coat, with the rutile and anatase forms having industrial applications. The main production processes for titanium dioxide include the sulfuric acid process and the chloride process. The former uses readily available raw materials but has a long process and high pollution levels, while the latter has a shorter process, lower energy consumption, and produces higher quality products. Due to its excellent hiding power, light stability, and durability, titanium dioxide is widely used in coatings, paints, plastics, paper, cosmetics, food additives, and building materials.

[0003] In the preparation of titanium dioxide, sulfuric acid leaching is a crucial step. Traditional sulfuric acid leaching reactors have limited stirring capabilities; most employ unidirectional stirring, which often fails to achieve comprehensive and uniform mixing of the materials. Furthermore, bubbles and unreacted materials generated during stirring tend to remain inside the reactor, further impacting reaction efficiency and product quality. Additionally, the materials tend to adhere to the bottom of the reactor during the reaction, making cleaning difficult, increasing maintenance costs, and potentially affecting subsequent reactions.

[0004] Therefore, in order to address the shortcomings of the above-mentioned problems, a sulfuric acid leaching reaction device for titanium dioxide preparation is proposed. Summary of the Invention

[0005] This invention overcomes the shortcomings of the prior art and provides a sulfuric acid leaching reaction apparatus for the preparation of titanium dioxide.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a sulfuric acid leaching reaction device for preparing titanium dioxide, comprising: a reaction vessel, an installation frame disposed on the top of the reaction vessel, a transmission mechanism disposed within the installation frame, and a stirring mechanism disposed within the reaction vessel and fixedly installed with the transmission mechanism.

[0007] The mounting frame is fixedly connected to the upper surface of the reactor. The transmission mechanism includes: a motor, a first gear disposed in the mounting frame, and a plurality of second gears disposed on the outer circumference of the first gear.

[0008] The motor is fixedly connected to the upper surface of the mounting frame, the first gear is rotatably connected to the upper surface of the reactor, and several second gears are rotatably connected to the upper surface of the reactor. Several second gears mesh with the outer circumferential wall of the first gear. One end of the motor output shaft passes through the mounting frame and is fixedly connected to the upper surface of the first gear.

[0009] In a preferred embodiment of this utility model, a dustproof shell is fixedly connected to the upper surface of the mounting frame, the motor is located inside the dustproof shell, and a plurality of through heat dissipation holes are provided on the outer circumferential wall of the dustproof shell.

[0010] In a preferred embodiment of the present invention, the transmission mechanism includes: a rotating rod, a plurality of transmission rods disposed on the inner wall of the top of the reactor, a stirring blade disposed on the outer circumference of the rotating rod, and a plurality of reversing blades disposed on the outer circumference of the transmission rod.

[0011] In a preferred embodiment of this utility model, the top of the rotating rod penetrates the inner wall of the top of the reactor and is fixedly connected to the top of the first gear. A plurality of stirring blades are fixedly connected to the outer circumferential wall of the rotating rod, and a plurality of through holes are provided on the outer circumferential wall of the stirring blades.

[0012] In a preferred embodiment of this utility model, the tops of the plurality of transmission rods all penetrate the inner top wall of the reactor and are respectively fixedly connected to the tops of the plurality of second gears, and the plurality of reverse blades are respectively fixedly connected to the outer circumferential wall of the plurality of transmission rods.

[0013] In a preferred embodiment of this invention, a plurality of perforations are provided on one side of each of the plurality of reversing blades.

[0014] In a preferred embodiment of this utility model, a rotating plate is fixedly connected to the bottom of the rotating rod, the bottom of the rotating plate is rotatably connected to the inner wall of the bottom of the reaction vessel, and a plurality of scrapers are fixedly connected to the outer circumferential wall of the rotating plate.

[0015] In a preferred embodiment of this invention, a common reinforcing ring is fixedly connected to one side of several scrapers.

[0016] In a preferred embodiment of this invention, the bottom of several scrapers is in close contact with the inner wall of the bottom of the reactor.

[0017] In a preferred embodiment of this invention, the top pipe of the reactor is connected to a feed hopper, and the bottom outer wall pipe of the reactor is connected to an outlet pipe.

[0018] This utility model solves the defects existing in the background technology, and has the following beneficial effects:

[0019] (1) This utility model provides a sulfuric acid leaching reaction device for titanium dioxide preparation. The first gear is driven by a motor to rotate, which in turn drives multiple second gears meshing with it to rotate synchronously. This not only realizes the effective transmission of power, but also enables the rotating rod and its stirring blades directly connected to the first gear to rotate in the forward direction and stir in the reverse direction. At the same time, the transmission rod and its reverse stirring blades connected to the second gears stir in the reverse direction. The combination of forward and reverse stirring greatly enhances the mixing effect of materials in the reactor, ensuring the uniformity and efficiency of the sulfuric acid leaching reaction, thereby improving the preparation efficiency and quality of titanium dioxide.

[0020] (2) This utility model provides a sulfuric acid leaching reaction device for titanium dioxide preparation. A rotating plate is connected to the bottom of the rotating rod, and multiple scrapers are fixed on the rotating plate. The bottom of the scrapers is in close contact with the inner wall of the bottom of the reactor. As the rotating rod rotates, the scrapers are continuously scraped, which can effectively prevent the material from sticking and clumping on the inner wall of the bottom of the reactor, ensuring the cleanliness of the reactor and the smooth flow of the material, and avoiding the problem of reduced production efficiency due to material sticking.

[0021] (3) This utility model provides a sulfuric acid leaching reaction device for titanium dioxide preparation. With the presence of a dustproof shell and several heat dissipation holes, the dustproof shell can effectively prevent external dust and impurities from entering the motor, keeping the motor clean and dry. The heat dissipation holes ensure that the heat generated by the motor during operation can be dissipated in time, avoiding damage or performance degradation of the motor due to overheating. Attached Figure Description

[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0023] Figure 1 This is a three-dimensional cross-sectional view of the device body according to a preferred embodiment of the present invention;

[0024] Figure 2 This is a three-dimensional structural diagram of the device body according to a preferred embodiment of the present invention.

[0025] In the diagram: 1. Reactor; 2. Mounting frame; 3. Transmission mechanism; 301. Motor; 302. Dustproof shell; 303. Heat dissipation hole; 304. Rotating rod; 305. Stirring blade; 306. Through hole; 307. Rotating plate; 308. Scraper; 309. Reinforcing ring; 310. First gear; 311. Second gear; 312. Transmission rod; 313. Reversing blade; 314. Leakage hole; 4. Feed hopper; 5. Outlet pipe. Detailed Implementation

[0026] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. These drawings are simplified schematic diagrams, which are only used to illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0027] like Figure 1 As shown, a sulfuric acid leaching reaction device for preparing titanium dioxide includes: a reaction vessel 1, a mounting frame 2 disposed on the top of the reaction vessel 1, a transmission mechanism 3 disposed within the mounting frame 2, and a stirring mechanism disposed within the reaction vessel 1 and fixedly mounted to the transmission mechanism 3.

[0028] like Figures 1-2 As shown, the mounting frame 2 is fixedly connected to the upper surface of the reactor 1, and the transmission mechanism 3 includes: a motor 301, a first gear 310 disposed in the mounting frame 2, and a plurality of second gears 311 disposed on the outer circumference of the first gear 310.

[0029] The motor 301 is fixedly connected to the upper surface of the mounting frame 2. The first gear 310 is rotatably connected to the upper surface of the reactor 1. Several second gears 311 are rotatably connected to the upper surface of the reactor 1. Several second gears 311 mesh with the outer circumferential wall of the first gear 310. One end of the output shaft of the motor 301 passes through the mounting frame 2 and is fixedly connected to the upper surface of the first gear 310. A dustproof shell 302 is fixedly connected to the upper surface of the mounting frame 2. The motor 301 is located inside the dustproof shell 302. Several through heat dissipation holes 303 are opened on the outer circumferential wall of the dustproof shell 302.

[0030] The transmission mechanism 3 includes: a rotating rod 304, a plurality of transmission rods 312 disposed on the inner wall of the top of the reactor 1, a stirring blade 305 disposed on the outer circumference of the rotating rod 304, and a plurality of reversing blades 313 disposed on the outer circumference of the transmission rods 312.

[0031] The tops of several transmission rods 312 penetrate the inner top wall of the reactor 1 and are fixedly connected to the tops of several second gears 311 respectively. Several reversing blades 313 are fixedly connected to the outer circumferential walls of several transmission rods 312 respectively. Several leakage holes 314 are opened on one side of several reversing blades 313.

[0032] It should be noted that the first gear 310 is driven to rotate by the motor 301. Since the first gear 310 meshes with multiple second gears 311, it can simultaneously drive multiple transmission rods 312 and their reversing blades 313 to rotate. The first gear 310 is also directly connected to the rotating rod 304 and its stirring blades 305, so that the material in the reactor 1 can be subjected to stirring forces from different directions and angles, thereby achieving more uniform and efficient mixing. The synergistic effect of the stirring blades 305 and the reversing blades 313 further enhances the stirring effect and improves the rate and efficiency of the sulfuric acid leaching reaction. The motor 301 is installed inside the dustproof shell 302, which can effectively prevent external dust and impurities from corroding the motor 301. Several heat dissipation holes 303 ensure that the heat generated by the motor 301 during operation can be dissipated in time, avoiding motor 301 failure due to overheating. The leakage holes 314 allow the material to pass more easily through the gaps of the reversing blades 313 and help release air bubbles during stirring, further improving the efficiency and quality of the sulfuric acid leaching reaction.

[0033] like Figures 1-2 As shown, a rotating plate 307 is fixedly connected to the bottom of the rotating rod 304. The bottom of the rotating plate 307 is rotatably connected to the inner wall of the bottom of the reactor 1. Several scrapers 308 are fixedly connected to the outer circumference of the rotating plate 307.

[0034] A reinforcing ring 309 is fixedly connected to one side of several scrapers 308. The bottom of several scrapers 308 is tightly fitted to the bottom inner wall of the reactor 1. The top pipe of the reactor 1 is connected to the feed hopper 4, and the bottom outer wall pipe of the reactor 1 is connected to the outlet pipe 5.

[0035] It should be noted that the bottoms of the scrapers 308 are tightly fitted to the inner wall of the bottom of the reactor 1. As the rotating rod 304 rotates, the scrapers 308 continuously scrape the bottom of the reactor 1, effectively preventing materials from adhering or clumping at the bottom, thus ensuring the cleanliness of the reactor 1 and significantly improving the flowability of the materials, ensuring uniform reaction. The reinforcing ring 309 enhances the stability and strength of the scrapers 308, effectively preventing deformation or damage caused by uneven force during scraping, thereby extending the service life of the scrapers 308. The feed hopper 4 facilitates the addition of raw materials, while the discharge pipe 5 ensures that the products can be smoothly discharged after the reaction is completed.

[0036] In use, the material is first conveniently added to the reactor 1 through the top feed hopper 4. Then, the motor 301 is started, causing its output shaft to rotate. This rotation drives the first gear 310 to rotate. Since the first gear 310 meshes with multiple second gears 311, when the first gear 310 rotates, it simultaneously drives several second gears 311 to rotate in the opposite direction. The rotation of the second gears 311 also causes the transmission rod 312 to rotate accordingly, thereby driving the reverse-rotating blades 313 on its outer circumference to rotate in the opposite direction. Simultaneously, the first gear 310 is directly connected to the rotating rod 304, which has stirring blades 305 on its outer circumference. Therefore, when the first gear 310 rotates, the rotating rod 304 and its stirring blades 305 also begin to rotate. This causes the material in the reactor 1 to be subjected to stirring forces from different directions and angles. The synergistic effect of the stirring blade 305 and the reversing blade 313 ensures more uniform and efficient mixing of materials within the reactor 1. The drain hole 314 on one side of the reversing blade 313 and the through hole 306 on one side of the stirring blade 305 help release air bubbles during stirring, further improving the rate and efficiency of the sulfuric acid leaching reaction. When the rotating rod 304 rotates, it drives several scrapers 308 to rotate, causing them to continuously scrape the bottom inner wall of the reactor 1. This effectively prevents material adhesion or clumping at the bottom, ensuring the cleanliness of the reactor 1 and significantly improving material flowability, thus contributing to a uniform reaction. The reinforcing ring 309 effectively prevents deformation or damage to the scrapers 308 due to uneven force during scraping.

[0037] Based on the preferred embodiments of this utility model described above, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A sulfuric acid leaching reaction apparatus for preparing titanium dioxide, comprising: A reactor (1), a mounting frame (2) disposed on the top of the reactor (1), a transmission mechanism (3) disposed within the mounting frame (2), and a stirring mechanism disposed within the reactor (1) and fixedly mounted to the transmission mechanism (3), characterized in that; The mounting frame (2) is fixedly connected to the upper surface of the reactor (1). The transmission mechanism (3) includes: a motor (301), a first gear (310) disposed in the mounting frame (2), and a plurality of second gears (311) disposed on the outer circumference of the first gear (310). The motor (301) is fixedly connected to the upper surface of the mounting frame (2), the first gear (310) is rotatably connected to the upper surface of the reactor (1), and several second gears (311) are rotatably connected to the upper surface of the reactor (1). Several second gears (311) mesh with the outer circumferential wall of the first gear (310). One end of the output shaft of the motor (301) passes through the mounting frame (2) and is fixedly connected to the upper surface of the first gear (310).

2. The sulfuric acid leaching reaction apparatus for preparing titanium dioxide according to claim 1, characterized in that: A dust cover (302) is fixedly connected to the upper surface of the mounting frame (2), and the motor (301) is located inside the dust cover (302). Several through heat dissipation holes (303) are opened on the outer circumferential wall of the dust cover (302).

3. The sulfuric acid leaching reaction apparatus for preparing titanium dioxide according to claim 1, characterized in that: The transmission mechanism (3) includes: a rotating rod (304), a plurality of transmission rods (312) disposed on the inner wall of the top of the reactor (1), a stirring blade (305) disposed on the outer circumference of the rotating rod (304), and a plurality of reversing blades (313) disposed on the outer circumference of the transmission rod (312).

4. The sulfuric acid leaching reaction apparatus for preparing titanium dioxide according to claim 3, characterized in that: The top of the rotating rod (304) penetrates the top inner wall of the reactor (1) and is fixedly connected to the top of the first gear (310). Several stirring blades (305) are fixedly connected to the outer circumference of the rotating rod (304), and several through holes (306) are opened on the outer circumference of the stirring blades (305).

5. The sulfuric acid leaching reaction apparatus for preparing titanium dioxide according to claim 3, characterized in that: The tops of several transmission rods (312) penetrate the inner top wall of the reactor (1) and are fixedly connected to the tops of several second gears (311), and several reversing blades (313) are fixedly connected to the outer circumferential walls of several transmission rods (312).

6. The sulfuric acid leaching reaction apparatus for preparing titanium dioxide according to claim 5, characterized in that: Several holes (314) are provided on one side of each of the aforementioned reversing blades (313).

7. The sulfuric acid leaching reaction apparatus for preparing titanium dioxide according to claim 3, characterized in that: The bottom of the rotating rod (304) is fixedly connected to a rotating plate (307), the bottom of the rotating plate (307) is rotatably connected to the bottom inner wall of the reactor (1), and a number of scrapers (308) are fixedly connected to the outer circumference of the rotating plate (307).

8. The sulfuric acid leaching reaction apparatus for preparing titanium dioxide according to claim 7, characterized in that: The same reinforcing ring (309) is fixedly connected to one side of several of the scrapers (308).

9. The sulfuric acid leaching reaction apparatus for preparing titanium dioxide according to claim 7, characterized in that: The bottom of several scrapers (308) is in close contact with the bottom inner wall of the reactor (1).

10. The sulfuric acid leaching reaction apparatus for preparing titanium dioxide according to claim 1, characterized in that: The top pipe of the reactor (1) is connected to the feed hopper (4), and the bottom outer wall pipe of the reactor (1) is connected to the outlet pipe (5).

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