A device for reducing the screen material after titanium dioxide coating

Abstract

The present invention discloses a device for reducing the on-screen material after titanium dioxide coating, including a coating storage tank, a filter press feed tank, a filter press assembly and a sedimentation tank. The coating storage tank is used to store the coated titanium dioxide slurry. A feed pipe is provided on the left side of the coating storage tank, and a filter pipe is provided on the left side of the filter press assembly. A parallel flow ultrasonic assembly is provided at the mouth of the feed pipe. The parallel flow ultrasonic assembly includes two parallel flow pipes arranged side by side, an ultrasonic mechanism is provided at the horizontal end of the parallel flow pipe, and two symmetrically arranged ultrasonic generators are provided on the ultrasonic mechanism, and used to ultrasonicate the coated slurry. An iron removal assembly is provided at the vertical end of the parallel flow pipe, and a vibration assembly is provided at the bottom of the parallel flow pipe, and a vibrating screen is provided inside the vibration assembly. The present invention is used to depolymerize large agglomerated particles of titanium powder, improve the screening rate of the vibrating screen, thereby reducing the on-screen material, thereby achieving the effect of saving resources, reducing costs and increasing efficiency, and at the same time, ultrasound can reduce the particle size of black particles for easy removal, and adding a pipeline iron remover can remove iron to ensure the quality of titanium dioxide.

Description

Technical Field

[0001] The invention belongs to the field of titanium dioxide, in particular to a device for reducing the material on the screen after titanium dioxide coating. Background Art

[0002] Titanium dioxide is an important inorganic chemical pigment. Its main component is titanium dioxide. It has strong weather resistance and heat resistance and is an excellent white pigment. Due to its brightness, whiteness and opacity, it has important uses in industries such as coatings, inks, papermaking, plastics and rubber, chemical fibers, and ceramics. And because of its rapid development, it has good development prospects.

[0003] Patent CN202011166574.8 discloses a titanium dioxide grinding equipment, including a crushing device for crushing titanium dioxide blocks and a grinding device for grinding titanium dioxide blocks, and also including a stirring device for fully stirring and mixing the titanium dioxide blocks and titanium dioxide powder; the crushing device includes an operating frame, a grinding cylinder, a feed frame, a drive motor, a first rotating plate, a second rotating plate, a first crushing roller, a second crushing roller and a beating plate, the grinding device includes a rotating motor, a rotating shaft, a fixed plate, a rotating cylinder, a tensioning column, a main grinding plate and an auxiliary grinding plate, the stirring device includes a beating block and an inclined guide plate. The invention has the effect of higher grinding efficiency and better grinding effect in the process of grinding titanium dioxide.

[0004] In order to overcome the optical activity of titanium dioxide, the titanium dioxide base material needs to be post-processed, mainly including receiving the base material to the neutralization tank, sand milling, coating, water washing and filter pressing, flash drying, air flow crushing and packaging. According to market quality feedback, titanium dioxide contains small black particles, most of which are iron and iron oxide, which affect the use of downstream customers. In order to solve this problem, the original production process is improved, and a vibrating screen is added before water washing after coating to further remove impurities. However, about 1 ton of screen material is produced every day. The current production treatment method is mainly stacking inventory, which causes a waste of titanium resources. The main source of screen material is agglomeration during the coating process of titanium dioxide base material and large particles are brought back by the recycling of titanium dioxide after washing. The methods of depolymerizing agglomerates and reducing the particle size of large particles include grinding and ultrasound. In order to reduce the screen material after coating while ensuring product quality, it is necessary to optimize and improve the existing screening system, ultrasonically treat the titanium dioxide screen material, reduce the stockpiling of titanium dioxide screen material, and recycle materials. In view of this, we propose a titanium dioxide grinding equipment.

[0005] The information disclosed in this background technology section is only intended to enhance the understanding of the overall background of the invention and should not be regarded as an acknowledgment or any form of suggestion that the information constitutes the prior art already known to a person skilled in the art. Summary of the invention

[0006] The object of the present invention is to provide a device for reducing the screen material after titanium dioxide coating, so as to solve the above-mentioned problems of the prior art.

[0007] To achieve the above object, the present invention provides a device for reducing the screen material after titanium dioxide coating, comprising a post-coating storage tank, a filter press feed tank, a filter press assembly and a sedimentation tank;

[0008] The post-coating storage tank is used to store the coated titanium dioxide slurry. A feed pipe is provided on the right side of the post-coating storage tank, a discharge pipe is provided on the top of the post-coating storage tank, a liquid outlet pipe and a liquid inlet pipe are provided on the left and right ends of the filter press feed tank, and a filter water pipe is provided on the left side of the filter press assembly;

[0009] The pipe mouth of the feed pipe is provided with a parallel flow ultrasonic assembly, which includes two parallel flow pipes arranged side by side, and the horizontal ends of the parallel flow pipes are provided with an ultrasonic mechanism, on which two symmetrically arranged ultrasonic generators are provided, and are used to ultrasonicate the coated slurry;

[0010] The vertical end of the parallel flow pipe is provided with an iron removal assembly, the bottom of the parallel flow pipe is provided with a vibration assembly, the interior of the vibration assembly is provided with a vibrating screen for depolymerizing large agglomerated particles of titanium powder, the top of the vibration assembly is provided with a silo opening, the bottom of the parallel flow pipe is inserted into the silo opening, and the left end of the vibration assembly is provided with a first discharge pipe;

[0011] The liquid inlet pipe and the liquid outlet pipe are both provided with iron removal components, the liquid inlet pipe is communicated with the first discharge pipe, and the liquid outlet pipe is communicated with the water filter pipe.

[0012] In the technical solution of the present invention, a control valve is further provided on the horizontal end of the parallel flow pipe, and the control valve is located between the ultrasonic mechanism and the feed pipe.

[0013] In the technical solution of the present invention, the iron removal assembly at the vertical end of the parallel flow tube includes a pipe shell fixed on the parallel flow tube, a magnet is provided inside the pipe shell, the magnet is connected to the inside of the parallel flow tube, and a handle is provided at the outer end of the magnet.

[0014] In the technical solution of the present invention, a second slurry pump is provided on the liquid outlet pipe for conveying titanium dioxide slurry into the filter press assembly.

[0015] In the technical solution of the present invention, the filter press assembly includes a filter press box and a support beam for supporting the filter press box, and a liquid collecting bin is provided at the bottom of the filter press box.

[0016] In the technical solution of the present invention, the interior of the filter press box includes a clamping plate, a filter plate and a thrust plate arranged from right to left in sequence, and a hydraulic cylinder is arranged at the right end of the support beam, and the hydraulic cylinder is driven and connected to the clamping plate through a piston rod.

[0017] In the technical solution of the present invention, a first outlet is provided at the right end of the liquid collecting bin, and the first outlet is interconnected with the bottom of the sedimentation tank. A second outlet is provided at the bottom end of the liquid collecting bin, and the second outlet is interconnected with the top of the filter press feed trough.

[0018] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0019] 1. In the present invention, a parallel-flow ultrasonic component is provided to depolymerize large particles and impurity particles of titanium powder agglomerates through an ultrasonic generator, and the titanium dioxide recovered from the slurry after coating, the bottom flow of the sedimentation tank and the concentrated liquid of the ceramic membrane system from the screen material is ultrasonically treated, thereby reducing the screen material and facilitating the removal of impurities.

[0020] 2. In the present invention, through the vibration assembly, the secondary wash water and the recycled material will dilute the coated slurry, improve the ultrasonic efficiency, and then reduce the screen material. The front section of the secondary wash water is used to flush the vibrating screen, improve the screening rate of the vibrating screen, thereby reducing the screen material. Finally, the screen material returns to the ultrasonic device to ensure that the screen material is fully consumed.

[0021] 3. In the present invention, pipeline iron removal components are respectively arranged on the ultrasonic mechanism and the liquid inlet pipe and the liquid outlet pipe of the filter press feed tank, and impurities are removed through three-stage impurity removal to ensure product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 It is a structural diagram of the co-current ultrasonic component of the present invention;

[0024] Figure 3 is a structural diagram of the vibration component in the present invention;

[0025] Figure 4 It is a structural diagram of the filter press assembly of the present invention;

[0026] Figure 5 It is the overall structural principle diagram of the present invention.

[0027] Description of reference numerals:

[0028] 1. Storage tank after coating; 10. Feed pipe; 11. Discharge pipe;

[0029] 2. Parallel flow ultrasonic assembly; 20. Parallel flow pipe; 201. Control valve; 21. Ultrasonic mechanism; 22. Ultrasonic generator;

[0030] 3. Iron removal assembly; 30. Pipe shell; 31. Magnet; 32. Handle;

[0031] 4. Vibration assembly; 40. Bin opening; 41. First discharge pipe; 42. Vibrating screen;

[0032] 5. filter press feed trough; 50. liquid inlet pipe; 51. liquid outlet pipe; 510. second slurry pump;

[0033] 6. Filter press assembly; 60. Filter pipe; 61. Filter press box; 610. Pressing plate; 611. Filter plate; 612. Thrust plate; 613. Hydraulic cylinder; 62. Support beam; 63. Liquid collecting bin; 64. First outlet; 65. Second outlet;

[0034] 7. Sedimentation tank. DETAILED DESCRIPTION

[0035] The specific implementation modes of the present invention are described in detail below in conjunction with the accompanying drawings, but it should be understood that the protection scope of the present invention is not limited by the specific implementation modes.

[0036] Unless explicitly stated otherwise, throughout the specification and claims, the term “comprise” or variations such as “include” or “comprising”, etc., will be understood to include the stated elements or components but not to exclude other elements or components.

[0037] Reference Figure 1-Figure 5 The device for reducing the screen material after titanium dioxide coating of the present invention comprises a coating storage tank 1, a filter press feed tank 5, a filter press assembly 6 and a sedimentation tank 7. The coating storage tank 1 is used to store the coated titanium dioxide slurry. A feed pipe 10 is provided on the right side of the coating storage tank 1, and a discharge pipe 11 is provided on the top of the coating storage tank 1. The left and right ends of the filter press feed tank 5 are respectively provided with a liquid outlet pipe 51 and a liquid inlet pipe 50. A filter press assembly 6 is provided with a water filter pipe 60 on the left side. A parallel flow ultrasonic assembly 2 is provided at the pipe mouth of the feed pipe 10. The parallel flow ultrasonic assembly 2 comprises two parallel flow pipes 20 arranged side by side. An ultrasonic mechanism 21 is provided at the horizontal end of the parallel flow pipe 20. Two symmetrically arranged ultrasonic generators 22 are provided on the ultrasonic mechanism 21 and are used to ultrasonically treat the coated slurry. An iron removal assembly 20 is provided at the vertical end of the parallel flow pipe 20. Part 3, a vibration component 4 is provided at the bottom of the parallel flow tube 20, and a vibrating screen 42 is provided inside the vibration component 4 for depolymerizing large particles of titanium powder agglomerates. A silo port 40 is provided at the top of the vibration component 4, and the bottom of the parallel flow tube 20 is inserted into the silo port 40. A first discharge pipe 41 is provided at the left end of the vibration component 4, and an iron removal component 3 is provided on the liquid inlet pipe 50 and the liquid outlet pipe 51. The liquid inlet pipe 50 and the first discharge pipe 41 are interconnected, and the liquid outlet pipe 51 and the water filter pipe 60 are interconnected. The vibrating screen 42 generates high-frequency vibration through a vibration motor arranged in the vibration component 4, which is used for depolymerizing titanium powder particles to ensure that the titanium material can smoothly enter the filter press feed trough 5. The two parallel flow tubes 20 are arranged in a backup and a backup mode, and the titanium material is controlled to enter the parallel flow tube 20 by the control valve 201 arranged.

[0038] In the present invention, a control valve 201 is further provided on the horizontal end of the parallel flow pipe 20. The control valve 201 is located between the ultrasonic mechanism 21 and the feed pipe 10. The ultrasonic mechanism 21 is provided to remove iron slag in the titanium material to ensure the quality of the product.

[0039] First, the iron removal assembly 3 at the vertical end of the parallel flow tube 20 includes a pipe shell 30 fixed on the parallel flow tube 20, and a magnet 31 is provided inside the pipe shell 30. The magnet 31 is connected to the inside of the parallel flow tube 20, and a handle 32 is provided at the outer end of the magnet 31. The titanium material entering the parallel flow tube 20 is de-ironized by the magnet 31, and the iron slag mixed in the titanium material is adsorbed. The magnet 31 is conveniently taken out by the handle 32 to clean the iron slag.

[0040] Secondly, a second slurry pump 510 is provided on the liquid outlet pipe 51 for conveying the titanium dioxide slurry to the filter press assembly 6. The titanium dioxide slurry in the filter press feed trough 5 is extracted by the second slurry pump 510 and conveyed to the filter press box 61 for filtration.

[0041] Specifically, the filter press assembly 6 includes a filter press box 61 and a support beam 62. A liquid collecting bin 63 is provided at the bottom of the filter press box 61. The support beam 62 is used to support the filter press box 61, and the liquid collecting bin 63 is used to collect the filtrate after filtration.

[0042] Furthermore, the interior of the filter press box 61 includes a clamping plate 610, a filter plate 611 and a thrust plate 612, which are arranged from right to left in sequence. A hydraulic cylinder 613 is provided at the right end of the support beam 62. The hydraulic cylinder 613 is driven and connected to the clamping plate 610 through a piston rod. The hydraulic cylinder 613 is provided to push the clamping plate 610 toward the thrust plate 612. After the titanium dioxide slurry enters from the water filter pipe 60, it is distributed in the gap between the filter plates 611. As the clamping plate 610 squeezes the titanium dioxide slurry, the filtered water generated enters the liquid collecting bin 63.

[0043] Finally, a first outlet 64 is provided at the right end of the liquid collecting bin 63, and the first outlet 64 is interconnected with the bottom of the sedimentation tank 7. A second outlet 65 is provided at the bottom of the liquid collecting bin 63, and the second outlet 65 is interconnected with the top of the filter press feed trough 5. The filter press water that has passed through the first wash water is discharged into the sedimentation tank 7 through the first outlet 64, and the filter press water that has passed through the second wash water is discharged into the filter press feed trough 5 through the second outlet 65.

[0044] The working principle of the device for reducing the screen material after titanium dioxide coating of the present invention is specifically as follows:

[0045] Step 1: receiving the titanium dioxide base material produced by chlorination oxidation to the neutralization tank, performing sand grinding, transferring to the base material storage tank after sand grinding, and then coating, and then entering the post-coating storage tank 1;

[0046] Step 2: Add a parallel flow ultrasonic component 2 between the post-coating storage tank 1 and the vibrating screen 42 process, perform ultrasonic treatment on the post-coating slurry, install an iron removal component 3 on the parallel flow pipe 20 to remove iron after ultrasonic treatment, and then the slurry passes through the vibrating screen 42, and the slurry flows to the storage tank before the filter press for water washing, and the material on the screen returns to the sand mill for sand milling again;

[0047] Step 3: The filter cake after washing and filtration by the filter press assembly 6 is dried and crushed, and the filtrate is divided into three sections. The squeezed water is directly recovered to the filter press feed tank for further filtration to recover the lost titanium dioxide. The first wash water enters the sedimentation tank for sedimentation and recovery of titanium dioxide; the second wash water is used for the first wash, ultrasonic dilution to improve ultrasonic efficiency and water flushing of the vibrating screen 42 to reduce the screen material;

[0048] Step 4: After the bottom flow of the sedimentation tank 7 returns to the post-coating storage tank 1, it is recycled after being ultrasonically processed by the co-current ultrasonic component 2, and the overflow enters the ceramic membrane for treatment. The water produced by the ceramic membrane is further processed to obtain demineralized water for production recycling, and the concentrated liquid is transferred to the co-current ultrasonic component 2 for reuse. At the same time, the concentrated liquid can dilute the post-coating slurry to improve the ultrasonic efficiency.

[0049] The foregoing description of specific exemplary embodiments of the present invention is for the purpose of illustration and demonstration. These descriptions are not intended to limit the present invention to the precise form disclosed, and it is clear that many changes and variations can be made based on the above teachings. The purpose of selecting and describing the exemplary embodiments is to explain the specific principles of the present invention and its practical application, so that those skilled in the art can realize and utilize various different exemplary embodiments of the present invention and various different selections and changes. The scope of the present invention is intended to be limited by the claims and their equivalents.

Claims

1. A device for reducing the screen material after titanium dioxide coating, comprising a post-coating storage tank (1), a filter press feed tank (5), a filter press assembly (6) and a sedimentation tank (7), characterized in that: The coated storage tank (1) is used to store coated titanium dioxide slurry. A feed pipe (10) is provided on the right side of the coated storage tank (1), a discharge pipe (11) is provided on the top of the coated storage tank (1), a liquid outlet pipe (51) and a liquid inlet pipe (50) are provided on the left and right ends of the filter press feed tank (5), and a water filter pipe (60) is provided on the left side of the filter press assembly (6); A parallel flow ultrasonic assembly (2) is provided at the pipe mouth of the feed pipe (10), and the parallel flow ultrasonic assembly (2) comprises two parallel flow pipes (20) arranged side by side, and an ultrasonic mechanism (21) is provided at the horizontal end of the parallel flow pipe (20), and two symmetrically arranged ultrasonic generators (22) are provided on the ultrasonic mechanism (21) and are used to perform ultrasonic treatment on the coated slurry; A deironing assembly (3) is provided at the vertical end of the parallel flow pipe (20), a vibration assembly (4) is provided at the bottom of the parallel flow pipe (20), a vibrating screen (42) is provided inside the vibration assembly (4) for depolymerizing large agglomerated particles of titanium powder, a silo opening (40) is provided at the top of the vibration assembly (4), the bottom of the parallel flow pipe (20) is inserted into the silo opening (40), and a first discharge pipe (41) is provided at the left end of the vibration assembly (4); The liquid inlet pipe (50) and the liquid outlet pipe (51) are both provided with an iron removal assembly (3); the liquid inlet pipe (50) and the first discharge pipe (41) are in communication with each other; and the liquid outlet pipe (51) and the water filter pipe (60) are in communication with each other.

2. The device for reducing the screen material after titanium dioxide coating according to claim 1, characterized in that: A control valve (201) is also provided on the horizontal end of the parallel flow pipe (20), and the control valve (201) is located between the ultrasonic mechanism (21) and the feed pipe (10).

3. The device for reducing the screen material after titanium dioxide coating according to claim 1, characterized in that: The iron removal assembly (3) on the vertical end of the parallel flow tube (20) comprises a pipe shell (30) fixed on the parallel flow tube (20), a magnet (31) is provided inside the pipe shell (30), the magnet (31) is connected to the inside of the parallel flow tube (20), and a handle (32) is provided at the outer end of the magnet (31).

4. The device for reducing the screen material after titanium dioxide coating according to claim 1, characterized in that: The liquid outlet pipe (51) is provided with a second slurry pump (510) for conveying titanium dioxide slurry to the filter press assembly (6).

5. The device for reducing the screen material after titanium dioxide coating according to claim 1, characterized in that: The filter press assembly (6) comprises a filter press box (61) and a support beam (62) for supporting the filter press box (61); a liquid collecting bin (63) is provided at the bottom of the filter press box (61).

6. The device for reducing the screen material after titanium dioxide coating according to claim 5, characterized in that: The filter press box (61) includes a clamping plate (610), a filter plate (611) and a thrust plate (612) arranged in sequence from right to left. A hydraulic cylinder (613) is arranged at the right end of the support beam (62). The hydraulic cylinder (613) is connected to the clamping plate (610) by a piston rod.

7. The device for reducing the screen material after titanium dioxide coating according to claim 5, characterized in that: A first outlet (64) is provided at the right end of the liquid collecting bin (63), and the first outlet (64) is communicated with the bottom of the sedimentation tank (7). A second outlet (65) is provided at the bottom end of the liquid collecting bin (63), and the second outlet (65) is communicated with the top of the filter press feed trough (5).

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