Titanium slag powder concentrator

Abstract

The utility model provides a titanium slag powder concentrator, and relates to the technical field of titanium slag sorting instruments. A titanium slag powder concentrator comprises a feeding bin and a powder screening shell which are sequentially communicated in the gravity direction, the powder screening shell is provided with an air inlet and an air outlet, the air inlet is provided with a grid, the lower end of the powder screening shell is provided with a coarse powder outlet, a scattering device transversely arranged between the air inlet and the air outlet is arranged in the powder screening shell, and the feeding bin is obliquely provided with a filter screen plate. A slag outlet is formed in the side wall of the feeding bin and located at the lower end, in the gravity direction, of the filter screen plate. According to the powder concentrator, a sieve originally arranged on an air outlet in the powder screening shell is removed, the filter screen plate is arranged on the feeding bin, the slag outlet is formed in the feeding bin in a matched mode, overlarge particles are removed before titanium slag enters the powder screening shell, and then the problems that the internal wind resistance of existing V-shaped powder concentrator equipment is too high, coarse particles cannot be blown out, and the particle size is small are solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to titanium slag sorting instrument technical field, specifically, relate to a kind of titanium slag powder concentrator. BACKGROUND

[0002] Titanium slag is chlorination method titanium dioxide production raw material, usually requires titanium slag particle size 20 mesh~200 mesh, the control means of current market titanium slag particle size is mainly using air separation system to sort out qualified titanium slag after multistage crushing, the combination of sorting device is usually V-type powder concentrator, fine powder concentrator.However, V-type powder concentrator is cited from cement sorting industry, is designed for cement industry, and the applicability of titanium slag air separation is poor, in most titanium slag plant applications, there are generally problems of high internal wind resistance of equipment, coarse particles cannot be blown out, resulting in titanium slag particle content ratio less than 400 microns in titanium slag particles from V-type machine air powder outlet is 70~75%, so that the yield of final product (20 mesh~200 mesh) is generally below 85%, i.e.high fine powder rate, low qualified rate. SUMMARY

[0003] The utility model aims at providing a kind of titanium slag powder concentrator, to solve the problem of excessive wind resistance in V-type powder concentrator at present stage, coarse particles cannot be blown out.

[0004] The embodiment of the utility model is realized as follows:

[0005] A kind of titanium slag powder concentrator, including the communication of feed bin and screen powder shell in gravity direction in proper order, screen powder shell is equipped with air inlet and air outlet, air inlet is equipped with grid, screen powder shell lower end is equipped with coarse powder outlet, screen powder shell is equipped with the scattering device that is transverse between air inlet and air outlet, above-mentioned feed bin is inclined and is equipped with filter screen, feed bin side wall is located at the lower end of filter screen in gravity direction and is equipped with slag outlet.

[0006] In this design, by arranging filter screen in feed bin, the loss of air inlet can be effectively reduced, compared with the powder concentrator used at present stage, the mesh screen at air outlet is removed, only the grid at air inlet is retained for uniform dispersion of material, the mesh screen at air outlet is no longer installed to further reduce wind resistance, and the phenomenon of coarse particles not being blown out and overall particle size deviating from 200 mesh is reduced.

[0007] In some technical solutions of the utility model, screen powder shell is V-shaped shell, V-shaped shell is formed by first wall surface, second wall surface, third wall surface and fourth wall surface, both ends of the above-mentioned scattering device are arranged on first wall surface and second wall surface respectively, both sides of the scattering device are respectively left with gap on third wall surface and fourth wall surface, and the above-mentioned air inlet and the above-mentioned air outlet are respectively located on the inner wall of V-shaped shell on both sides of the scattering device.

[0008] In addition to breaking up titanium slag, the dispersing device also changes the airflow direction, making the airflow more evenly applied to the dispersed titanium slag and improving screening efficiency.

[0009] In some technical solutions of this utility model, the above-mentioned dispersing device includes multiple unit mesh plates arranged longitudinally and sequentially. The upper surfaces of the multiple unit mesh plates gradually move horizontally. The upper surface of the first unit mesh plate is located directly below the discharge port of the feed hopper, and the upper surface of the last unit mesh plate is located directly above the coarse powder outlet. The two ends of any unit mesh plate are respectively located on the first wall surface and the second wall surface.

[0010] In this design, gravity helps to break up the mixed fine and coarse titanium slag particles, making it easier for the wind to blow the titanium slag particles out and reducing the obstruction of separation by large titanium slag particles.

[0011] In some technical solutions of this utility model, any unit plate is inclined towards the feeding bin, and the angle between the surface of any unit plate and the horizontal plane is between 30° and 45°.

[0012] The inclined setting facilitates the dispersion and breaking up of the falling titanium slag material.

[0013] In some technical solutions of this utility model, the above-mentioned feeding hopper adopts a cone-bottom square hopper.

[0014] The cone-shaped bottom design of the square silo has better load-bearing capacity and resistance to deformation, and can maintain the stability of the silo for a long time.

[0015] In some technical solutions of this utility model, the above-mentioned powder screening shell is provided with a wear-resistant layer.

[0016] The wear-resistant layer can reduce the wear of titanium slag on the screen shell to a certain extent, thus improving the service life of the screen.

[0017] In some technical solutions of this utility model, the wear-resistant layer is a ceramic lining.

[0018] In this design, the ceramic liner has extremely high hardness, which can easily resist the erosion of various abrasive media, including high-hardness particles, cutting forces, and long-term friction.

[0019] In some technical solutions of this utility model, the filter screen includes filter holes with a pore size between 10 mm and 30 mm.

[0020] This design allows for the early removal of larger titanium slag particles as needed, preventing excessive air resistance within the sieve housing.

[0021] Compared with the prior art, the embodiments of this utility model have at least the following advantages or beneficial effects:

[0022] This air classifier removes the original screen from the air outlet on the screen housing and replaces it with a filter screen plate on the feed hopper, along with a slag outlet. This removes oversized particles before the titanium slag enters the screen housing, thus improving the problems of excessive internal air resistance, inability to blow out coarse particles, and excessively fine particle size in the existing V-type air classifier. Attached Figure Description

[0023] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the structure of a titanium slag classifier according to an embodiment of the present invention;

[0025] Figure 2 This is a partial structural schematic diagram of a titanium slag classifier according to an embodiment of the present invention;

[0026] Figure 3 This is a top view of a filter screen in a titanium slag classifier according to an embodiment of the present invention;

[0027] Figure 4 This is a top view of a unit screen plate in a titanium slag classifier according to an embodiment of the present invention.

[0028] Icons: 100-Feeding bin, 101-Filter screen, 102-Slag outlet, 200-Powder sieve shell, 201-Air inlet, 202-Air outlet, 203-Grid, 204-Coarse powder outlet, 205-First wall surface, 206-Second wall surface, 207-Third wall surface, 208-Fourth wall surface, 209-Ceramic lining, 300-Dispersing device, 301-Unit screen, 302-Upper end face. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0030] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0031] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0032] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0033] The following detailed description of some embodiments of this application is provided in conjunction with the accompanying drawings. Unless otherwise specified, the various embodiments and features described below can be combined with each other.

[0034] Example

[0035] Please refer to Figures 1-4 A titanium slag classifier includes a feed hopper 100 and a screening shell 200 connected sequentially along the direction of gravity. The screening shell 200 is provided with an air inlet 201 and an air outlet 202. The air inlet 201 is provided with a grid 203. A coarse powder outlet 204 is opened at the lower end of the screening shell 200. A dispersing device 300 is provided inside the screening shell 200, which is transversely connected between the air inlet 201 and the air outlet 202. The feed hopper 100 is inclinedly provided with a filter screen 101. A slag outlet 102 is provided on the side wall of the feed hopper 100 at the lower end of the filter screen 101 along the direction of gravity.

[0036] The principle of this titanium slag classifier: The feed hopper 100 is made of wear-resistant carbon steel with a thickness of 8mm. The screen is made of 304 stainless steel, and the aperture of the filter screen plate 101 is preferably 30mm. The filter screen plate 101 is arranged at a 45° angle to the horizontal ground inside the feed hopper 100. The filter screen plate 101 is preferably made of screen mesh, and the whole is fixed to the screening shell 200 with screws. The feed hopper 100 and the screening shell 200 are welded together. The air inlet 201 is connected to an air duct, and the air duct is connected to a fan. A discharge trough can be set below the slag outlet 102 of the feed hopper 100 to receive the large particles of titanium slag screened out. The feed inlet and coarse powder outlet 204 of the feed hopper 100 are as follows: Figure 1 Therefore, they are staggered, meaning that the preferred coarse powder outlet 204 is not directly below the feed hopper 100.

[0037] When titanium slag powder selection is required, ventilation is first introduced into the titanium slag powder separator through the air inlet. The air enters the screening shell 200 evenly through the grid 203. The titanium slag material first enters the feed hopper 100. When the material reaches the filter plate 101, the material that meets the size requirements passes through the filter plate 101 and enters the screening shell 200 under the influence of gravity and the impact of the new material. Titanium slag particles that do not meet the size requirements remain on the filter plate 101 and slide on the inclined filter plate 101 under the influence of gravity. Finally, the titanium slag reaches the slag outlet 102 on the ring side of the feed hopper 100 and is discharged from the classifier. Titanium slag of the correct size flows out of the outlet of the feed hopper 100 and into the air-filled screening shell 200. Under the influence of gravity, the titanium slag falls and is dispersed by the dispersing device 300 during its descent. The air blows over the titanium slag, carrying small titanium slag particles out through the air-powder system to the next screening stage. Coarse particles not carried by the air are discharged from the classifier through the coarse powder outlet 204 under the influence of gravity. It is worth noting that, compared to the V-type classifier currently used, the size of the air inlet 201 of the screening shell 200 in this embodiment can be reduced, which can also improve the airflow to some extent.

[0038] In this design, by arranging a filter screen 101 in the feed hopper 100, the amount of titanium slag entering the air classification system can be effectively reduced, thus reducing air intake loss. Furthermore, compared to the currently used air classifiers, the screen at the air outlet 202 is removed, leaving only the grid 203 at the air inlet 201 for uniform material dispersion. The removal of the screen at the air outlet 202 further reduces air resistance. In this embodiment, assuming titanium slag particles smaller than 400 micrometers are labeled A, and titanium slag particles falling from the coarse powder outlet 204 are labeled C, the particle size values ​​are between titanium slag particles A and C. The qualified particles between C and B are B. In this design, the proportion of titanium slag particles smaller than 400 micrometers in the titanium slag particles entering the air outlet 202 is reduced from the original 70-75% to 60-65%, that is, the number of titanium slag particles B larger than 400 micrometers increases. In the traditional structure, titanium slag particles B that cannot be blown due to excessive wind resistance are blown into the air outlet 202, reducing the probability of them falling into the coarse powder outlet 204. As a result, the overall particles at the air outlet 202 shift towards the coarser particle size. This design reduces the phenomenon that coarse particles cannot be blown out and the overall particle size shifts towards 200 mesh.

[0039] In a preferred embodiment, the powder screening shell 200 is a V-shaped shell, which is formed by the first wall surface 205, the second wall surface 206, the third wall surface 207 and the fourth wall surface 208. The two ends of the powder dispersing device 300 are respectively located on the first wall surface 205 and the second wall surface 206. The two sides of the powder dispersing device 300 are respectively left with gaps between them and the third wall surface 207 and the fourth wall surface 208. The air inlet 201 and the air outlet 202 are respectively located on the inner walls of the V-shaped shell on both sides of the powder dispersing device 300.

[0040] In the above embodiments, the dispersing device can also be, for example, the dispersing device in a V-type air classifier with a rotatable dispersing device as described in patent number CN205462605U; air enters the sieve housing 200 through the air inlet 201. Since the dispersing device 300 is located between the air inlet 201 and the air outlet 202, it can also achieve the effect of changing the air direction (different mechanisms correspond to different degrees of changing the air direction), so that the air blows through the dispersed material, carrying up the fine powder with smaller particles in the titanium slag, and blowing it out through the air outlet 202. Therefore, the dispersing device 300 not only has the function of dispersing titanium slag but also has the function of changing the air direction, so that the air acts more evenly on the dispersed titanium slag, thereby improving the screening efficiency.

[0041] In a preferred embodiment, the above-mentioned dispersing device 300 includes a plurality of longitudinally spaced unit mesh plates 301. The upper end faces 302 of the plurality of unit mesh plates 301 gradually move horizontally. The upper end face 302 of the first unit mesh plate 301 is located directly below the discharge port of the feed hopper 100, and the upper end face 302 of the last unit mesh plate 301 is located directly above the coarse powder outlet 204. The two ends of any unit mesh plate 301 are respectively located on the first wall surface 205 and the second wall surface 206.

[0042] In the above embodiment, the unit mesh plate 301 is preferably made of 10mm thick 304 stainless steel metal plate and is fixed by welding. Multiple unit mesh plates 301 are arranged with a spacing of 40cm between them. In this design, the fine and coarse titanium slag particles mixed together are dispersed with the help of gravity, making it easier for the wind to blow out the titanium slag particles and reducing the obstruction of separation by large titanium slag particles.

[0043] In a preferred embodiment, any unit plate is inclined toward the feed hopper 100, and the angle between the surface of any unit plate and the horizontal plane is between 30° and 45°.

[0044] In the above embodiment, the titanium slag material is tilted to facilitate its dispersion and falling.

[0045] As a preferred implementation method, the above-mentioned feed hopper 100 adopts a cone-bottom square hopper.

[0046] In the above embodiments, the conical bottom design of the conical-bottomed square silo has better load-bearing capacity and deformation resistance, and can maintain the stability of the silo body for a long time.

[0047] In a preferred embodiment, the powder screening shell 200 is provided with a wear-resistant layer.

[0048] In the above embodiment, the screening shell 200 is made of carbon steel; this design can reduce the wear of titanium slag on the screening shell 200 and improve the service life of the screening machine.

[0049] As a preferred implementation method, the wear-resistant layer is a ceramic liner 209.

[0050] In the above embodiment, the ceramic liner 209 is cast from wear-resistant ceramic patches; after special processing, the ceramic material has extremely high hardness and can easily resist the erosion of various abrasive media, including high-hardness particles, cutting forces and long-term friction.

[0051] In a preferred embodiment, the filter screen 101 includes filter holes with a pore size between 10 mm and 30 mm.

[0052] In the above embodiments, personnel can select the diameter of the filter holes according to the required particle size of titanium slag; this design can remove larger titanium slag particles in advance as needed, avoiding excessive air resistance inside the sieve housing 200.

[0053] In summary, the embodiments of this utility model provide a titanium slag classifier, which is a V-type classifier suitable for titanium slag air classification. By arranging the filter screen 101 and reducing the screen of the air outlet 202, it can effectively solve the problems of excessive internal air resistance, failure to blow out coarse particles, and excessively fine particle size in existing V-type classifiers, providing a reliable and efficient solution for titanium slag classification in industrial production.

Claims

1. A titanium slag classifier, comprising a feed hopper (100) and a screening shell (200) sequentially connected along the direction of gravity, the screening shell (200) having an air inlet (201) and an air outlet (202), the air inlet (201) having a grid (203), a coarse powder outlet (204) opening at the lower end of the screening shell (200), and a dispersing device (300) transversely intersecting the air inlet (201) and the air outlet (202) inside the screening shell (200), characterized in that, The feed hopper (100) is inclined and equipped with a filter screen plate (101). The side wall of the feed hopper (100) is provided with a slag outlet (102) at the lower end of the filter screen plate (101) along the direction of gravity.

2. The titanium slag classifier according to claim 1, characterized in that, The powder sieving shell (200) is a V-shaped shell, which is formed by the first wall (205), the second wall (206), the third wall (207) and the fourth wall (208). The two ends of the dispersing device (300) are respectively located on the first wall (205) and the second wall (206). The two sides of the dispersing device (300) are respectively separated from the third wall (207) and the fourth wall (208). The air inlet (201) and the air outlet (202) are respectively located on the inner wall of the V-shaped shell on both sides of the dispersing device (300).

3. A titanium slag classifier according to claim 2, characterized in that, The dispersing device (300) includes multiple longitudinally spaced unit screens (301). The upper surfaces (302) of the multiple unit screens (301) gradually move horizontally. The upper surface (302) of the first unit screen (301) is located directly below the discharge port of the feed hopper (100), and the upper surface (302) of the last unit screen (301) is located directly above the coarse powder outlet (204). The two ends of any unit screen (301) are respectively located on the first wall surface (205) and the second wall surface (206).

4. A titanium slag classifier according to claim 3, characterized in that, All unit plates are inclined toward the feed hopper (100), and the angle between the surface of any unit plate and the horizontal plane is between 30° and 45°.

5. A titanium slag classifier according to claim 1, characterized in that, The feed hopper (100) is a cone-bottom square hopper.

6. A titanium slag classifier according to claim 1, characterized in that, The powder screening shell (200) is provided with a wear-resistant layer.

7. A titanium slag classifier according to claim 6, characterized in that, The wear-resistant layer is a ceramic liner (209).

8. A titanium slag classifier according to claim 1, characterized in that, The filter screen (101) includes filter holes with a pore size between 10 mm and 30 mm.

Images