Classification distributing device, ore grain classification distributing device and grain ore processing system

Abstract

The utility model provides a grading and distributing device, ore grain grading and distributing device and grain ore processing system, the grading and distributing device comprises a grading structure and a distributing structure, the grading structure comprises at least one grading screen, and an included angle is formed between the grading screen and the horizontal plane. The distribution structure is arranged below the grading structure, the projection of part of the grading structure in the vertical direction is located above the distribution structure, the distribution structure comprises at least two distribution units, each distribution unit comprises a storage part and a distribution part, the storage part is connected with the distribution part, the storage part is arranged close to one side of the grading structure, and the distribution part is arranged close to the bearing unit. According to the utility model, the granulated fly ash can be directly used for sintering burdening or bottoming to realize cyclic utilization, so that the technical problem that the sintering index of a sintering machine is deteriorated due to the influence on the air permeability of a sintered material layer caused by large particle size difference of the fly ash is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of metal smelting, in particular to a grading distribution device, a granular grading distributor and a granular ore processing system. Background Art

[0002] The steel production process generates a large amount of dust. This includes sintering ash, blast furnace gas ash, blast furnace bag ash, converter dust, and environmental dust. This dust contains concentrated harmful elements such as potassium, sodium, zinc, lead, and silver, severely impacting resource recycling and creating a complex, extremely difficult-to-treat solid waste.

[0003] The industry has also conducted extensive research and proposed some targeted treatment methods. Pyrometallurgical processes such as rotary hearth furnaces and rotary kilns have certain advantages in treating dust ash with high zinc content, but they have the disadvantages of high raw material requirements, low thermal efficiency, and low productivity. Water washing processes are effective in removing alkali metals such as potassium and sodium, but the recovered elements are relatively single, and their scope of use is also somewhat limited. Some companies granulate these dust ash and use them directly for sintering ingredients or bottom paving for recycling. However, due to the large differences in the particle size of the dust ash, the permeability of the sintering material layer is affected, causing the sintering indicators of the sintering machine to show a deterioration trend. Even the bottom material returned to the sintered ore has uneven particle size, which affects the permeability of the material layer. Summary of the Invention

[0004] The embodiments of the present invention provide a grading distribution device, a granular grading distributor and a granular ore processing system, which can improve the technical problem that the large difference in dust ash particle size affects the permeability of the sintering layer.

[0005] In a first aspect, an embodiment of the present invention provides a graded material distribution device, comprising:

[0006] A grading structure, the grading structure comprising at least one grading screen, the grading screen forming an angle with a horizontal plane;

[0007] A cloth structure, wherein the cloth structure is arranged below the hierarchical structure and a portion of the hierarchical structure is vertically projected above the cloth structure; the cloth structure includes at least two cloth units, each of which includes a storage portion and a cloth portion, the storage portion being connected to the cloth portion, the storage portion being arranged near one side of the hierarchical structure, and the cloth portion being arranged near a bearing unit.

[0008] In one embodiment, the angle formed by the grading screen and the horizontal is greater than 0 degrees and less than 90 degrees, including 15 degrees, 45 degrees, 60 degrees or 75 degrees.

[0009] In one embodiment, the grading screen is further provided with a blocking portion, and the blocking portion is provided close to one side of the cloth structure.

[0010] In one embodiment, the grading structure includes a first grading screen and a second grading screen, and the mesh openings of the first grading screen are larger than the mesh openings of the second grading screen.

[0011] In one embodiment, the first grading screen and the second grading screen are arranged in parallel.

[0012] In one embodiment, the second grading screen is further provided with a flat plate portion and a blocking portion, and the blocking portion is connected to the flat plate portion.

[0013] In one embodiment, the cloth portion includes a funnel structure.

[0014] In one embodiment, the fabric structure includes a first fabric unit and a second fabric unit, and the first fabric unit and the second fabric unit are arranged side by side; the distance between the first fabric unit and the bearing unit is smaller than the distance between the second fabric unit and the bearing unit.

[0015] In a second aspect, an embodiment of the present invention provides a mineral particle classification distributor, comprising:

[0016] The grading distribution device;

[0017] A conveying unit, the conveying unit comprising a first conveying unit and a second conveying unit, the first conveying unit being arranged on the grading distribution device and corresponding to the grading structure;

[0018] The batch material distribution unit, the second conveying unit is arranged on the batch material distribution unit and corresponds to the batch material distribution unit; the batch material distribution unit and the distribution structure are arranged in parallel; the distance between the batch material distribution unit and the bearing unit is greater than the distance between the distribution structure and the bearing unit.

[0019] In a third aspect, an embodiment of the present invention provides a pellet ore processing system, comprising the above-mentioned ore grading distributor and a sintering machine, wherein the ore grading distributor is arranged on the sintering machine trolley.

[0020] Beneficial effects of the embodiments of the present utility model:

[0021] In the embodiment of the present utility model, the dust ash pellets are graded by a grading screen, and then the dust ash of different particle sizes is layered through a distribution structure, so that the dust ash can be directly used for sintering ingredients or as a bottom layer after granulation to achieve recycling, thereby improving the technical problem that the dust ash particle size difference is large, affecting the permeability of the sintering material layer, and causing the sintering indicators of the sintering machine to show a deterioration trend. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0023] Figure 1 This is a schematic structural diagram of the first type of graded material distribution device provided in Example 1 of the present utility model;

[0024] Figure 2 This is a schematic structural diagram of the second type of graded material distribution device provided in Example 1 of the present utility model;

[0025] Figure 3 This is a schematic structural diagram of a grading screen provided in Example 1 of the present utility model;

[0026] Figure 4 This is a schematic structural diagram of the second grading screen provided in Example 1 of the present utility model;

[0027] Figure 5 This is a schematic structural diagram of a granule classification distributor provided in Example 2 of the present utility model;

[0028] Figure 6 It is a structural schematic diagram of the granular ore processing system provided in Example 3 of the present utility model.

[0029] Description of reference numerals:

[0030] Grading distribution device 100, grading structure 1, grading screen 11, first grading screen 111, second grading screen 112, blocking part 11a, flat plate part 11b, distribution structure 2, distribution unit 21, storage part 21a, distribution part 21b, first distribution unit 211, second distribution unit 212, third distribution unit 213, carrying unit 3, mineral particle grading distributor 200, conveying unit 201, first conveying unit 201a, second conveying unit 201b, batch material distribution unit 202, pellet processing system 300, sintering machine 301. DETAILED DESCRIPTION

[0031] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention. In addition, it should be understood that the specific implementation methods described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention. In the present invention, unless otherwise specified, the directional words used, such as "upper" and "lower", generally refer to the upper and lower parts of the device in actual use or working state, specifically the drawing direction in the accompanying drawings; while "inside" and "outside" refer to the outline of the device.

[0032] Example 1

[0033] See also Figure 1 An embodiment of the present invention provides a grading distribution device 100 comprising a grading structure 1 and a distribution structure 2. The grading structure 1 includes at least one grading screen 11, which forms an angle with the horizontal plane. The distribution structure 2 is disposed below the grading structure 1, with a portion of the grading structure 1 vertically projected above the distribution structure 2. The distribution structure 2 includes at least two distribution units 21, each comprising a storage portion 21a and a distribution portion 21b. The storage portion 21a is connected to the distribution portion 21b, with the storage portion 21a disposed near one side of the grading structure 1 and the distribution portion 21b disposed near the support unit 3.

[0034] It should be noted that when the grading structure 1 has only one grading screen 11 , the grading screen 11 is the grading structure 1 .

[0035] It should be noted that the carrying unit 3 can be a carrying platform, a conveyor belt, a containing chamber or a sintering machine, which is not limited here.

[0036] It can be understood that in the embodiment of the present invention, the dust ash is graded by the grading screen 11, and then the dust ash of different material grades is layered by the distribution structure 2, so that the dust ash can be directly used for sintering ingredients or bottom laying after granulation to achieve recycling, thereby improving the technical problem that the dust ash particle size difference is large, affecting the permeability of the sintering material layer, causing the sintering indicators of the sintering machine to show a deterioration trend.

[0037] In one embodiment, the angle formed between the grading screen 11 and the horizontal plane is greater than 0 degrees and less than 90 degrees, including 15 degrees, 45 degrees, 60 degrees or 75 degrees.

[0038] It should be noted that the larger the angle formed between the grading screen 11 and the horizontal plane, the shorter the time the dust stays on the grading screen 11, and the more efficient the dust enters the distribution structure 2. The smaller the angle formed between the grading screen 11 and the horizontal plane, the longer the dust stays on the grading screen 11, which is more conducive to improving the grading effect of the grading screen 11 on the dust.

[0039] It should be noted that the sintering machine works on a downward draft method to ensure a negative pressure state in the material layer. This method of laying a large-particle dust removal ash on the bottom layer prevents leakage and clogging of the grate gaps, ensuring the air permeability of the entire material layer.

[0040] See also Figure 3 In one embodiment, a blocking portion 11 a is further provided on the grading screen 11 , and the blocking portion 11 a is provided close to one side of the cloth structure 2 .

[0041] It is understood that when the dust is classified on the grading screen 11, some of the dust from the next level may remain on the grading screen 11 or adhere to the dust from the previous level, thereby sliding into the wrong receiving portion 21a, thereby affecting the grading effect. The blocking portion 11a can prevent some of the dust from the next level from sliding into the wrong receiving portion 21a, thereby improving the grading effect.

[0042] See also Figure 2 In one embodiment, the grading structure 1 includes a first grading screen 111 and a second grading screen 112 , and the mesh openings of the first grading screen 111 are larger than the mesh openings of the second grading screen 112 .

[0043] It is understood that providing the second grading screen 112 can improve the number of grading levels of dust collected. Optionally, the mesh diameter of the first grading screen 111 is 10 to 14 mm, including 10 mm, 12 mm, or 14 mm. Optionally, the mesh diameter of the second grading screen 112 is 6 to 9 mm, including 6 mm, 7 mm, or 9 mm. The selection of the first grading screen 111 or the second grading screen 112 can be made based on the dust collected to improve the grading effect.

[0044] In one embodiment, the first grading screen 111 and the second grading screen 112 are arranged in parallel.

[0045] It can be understood that the parallel arrangement of the first grading screen 111 and the second grading screen 112 has a good grading effect on dust removal in different situations.

[0046] In some embodiments, the angle formed between the first grading screen 111 and the horizontal plane is different from the angle formed between the second grading screen 112 and the horizontal plane. For example, when the overall particle size of the dust is relatively small, the angle formed between the first grading screen 111 and the horizontal plane is set to be larger than the angle formed between the second grading screen 112 and the horizontal plane. In this case, the time the dust stays on the first grading screen 111 will be shortened, and the time it stays on the second grading screen 112 will be extended, which can achieve a better grading effect and improve grading efficiency. In addition, by adjusting the angle formed between the first grading screen 111 and the horizontal plane and the angle formed between the second grading screen 112 and the horizontal plane, the projection area of ​​the first grading screen 111 on the second grading screen 112 in the vertical direction can be controlled, and the grading efficiency can be effectively improved according to different dust particles.

[0047] See also Figure 4 In one embodiment, the second grading screen 112 is further provided with a flat plate portion 11b and a blocking portion 11a, and the blocking portion 11a is connected to the flat plate portion 11b.

[0048] It is understood that when dust is graded on the sieve, some of the dust from the next level may remain on the grading screen 11 or adhere to the dust from the previous level, causing it to slide into the wrong receiving section 21a, thereby affecting the grading effect. The blocking portion 11a can prevent the dust from the next level from sliding into the wrong receiving section 21a, thereby improving the grading effect. The flat portion 11b is connected to the blocking portion 11a to form a storage space, which is used to accommodate the dust from the next level, thereby improving the grading effect.

[0049] In one embodiment, the fabric portion 21b includes a funnel structure.

[0050] It is understandable that the distribution portion 21b adopts a funnel structure to cache and collect the dust from the hierarchical structure 1, restrict the distribution of the dust, and facilitate the distribution of the dust.

[0051] See also Figure 2 In one embodiment, the fabric structure 2 includes a first fabric unit 211 and a second fabric unit 212, and the first fabric unit 211 and the second fabric unit 212 are arranged in parallel; the distance between the first fabric unit 211 and the supporting unit 3 is smaller than the distance between the second fabric unit 212 and the supporting unit 3.

[0052] It is understood that the first distribution unit 211 and the second distribution unit 212 are arranged in parallel, and the distance between the first distribution unit 211 and the supporting unit 3 is smaller than the distance between the second distribution unit 212 and the supporting unit 3, which facilitates the stacking of dust particles of different particle sizes. It should be noted that in one embodiment, the distribution structure 2 also includes a third distribution unit 213, and the distance between the second distribution unit 212 and the supporting unit 3 is smaller than the distance between the third distribution unit 213 and the supporting unit 3, which facilitates the stacking of dust particles of different particle sizes in multiple layers.

[0053] In one embodiment, the first grading screen 111 is a bar screen with 12 mm mesh, and the second grading screen 112 is a bar screen with 8 mm mesh. These screens separate the dust pellets into grades greater than 12 mm, 8-12 mm, and less than 8 mm, which then enter different distribution units. The first distribution unit 211 arranges dust pellets greater than 12 mm as the first layer of paving material on the support platform. The second distribution unit 212 arranges dust pellets 8-12 mm in size as the second layer of paving material on top of the first layer. The third distribution unit 213 arranges dust pellets less than 8 mm in size as the third layer of paving material on top of the second layer, achieving graded distribution of the dust pellets.

[0054] It should be noted that, in this embodiment, the dust pellets are used as the classification objects only to clearly illustrate the structure and working principle of the classification distribution device 100, and should not be understood as a limitation on the classification objects of the classification distribution device 100.

[0055] Example 2

[0056] In a second aspect, an embodiment of the present invention provides a mineral particle grading distributor 200, comprising: the grading distribution device 100 as described in Example 1, a conveyor unit 201, and a batch material distribution unit 202. The conveyor unit 201 comprises a first conveyor unit 201a and a second conveyor unit 201b. The first conveyor unit 201a is disposed on the grading distribution device 100 and corresponds to the grading structure 1. The second conveyor unit 201b is disposed on the batch material distribution unit 202 and corresponds to the batch material distribution unit 202. The batch material distribution unit 202 is disposed in parallel with the distribution structure 2. The distance between the batch material distribution unit 202 and the supporting unit 3 is greater than the distance between the distribution structure 2 and the supporting unit 3.

[0057] It can be understood that in the embodiment of the present invention, the dust ash is graded by the grading screen 11, and then the dust ash of different material grades is layered by the distribution structure 2, so that the dust ash can be directly used for sintering ingredients or bottom laying after granulation to achieve recycling, thereby improving the technical problem that the dust ash particle size difference is large, affecting the permeability of the sintering material layer, and causing the sintering indicators of the sintering machine 301 to show a deterioration trend.

[0058] During operation, the first conveyor unit 201a transports dust to the graded distribution device 100, while the second conveyor unit 201b transports batch material to the batch distribution unit 202. This unit spreads the batch material onto the third layer of base material, forming a sintering material layer with a thickness of 800-1000 mm. The graded distribution device 100 and the batch distribution unit 202 work in tandem to complete the distribution operation.

[0059] The present invention provides a grading distributor for ore particles, successfully enabling direct recycling of granulated dust for sintering or as a base material. The device also implements graded base material distribution, maximizing the recycling of ash. Furthermore, during the granulation and recycling period, the permeability of the material bed is significantly improved, and the quality of the sintered ore is significantly enhanced, with a 0.76% increase in yield and a 0.98% reduction in solid fuel consumption, achieving significant economic, social, and environmental benefits compared to before the grading base material technology was implemented.

[0060] Example 3

[0061] In a third aspect, an embodiment of the present invention provides a pellet processing system 300 , comprising the pellet grading distributor 200 and a sintering machine 301 as described in Example 2, wherein the pellet grading distributor is disposed above the trolley of the sintering machine 301 .

[0062] It can be understood that in the embodiment of the present invention, the dust ash is graded by the grading screen 11, and then the dust ash of different material grades is layered by the distribution structure 2, so that the dust ash can be directly used for sintering ingredients or bottom laying after granulation to achieve recycling, thereby improving the technical problem that the dust ash particle size difference is large, affecting the permeability of the sintering material layer, and causing the sintering indicators of the sintering machine 301 to show a deterioration trend.

[0063] The above is a detailed introduction to the embodiments of the present invention. Specific examples are used in this article to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method and core idea of ​​the present invention. At the same time, for those skilled in the art, based on the idea of ​​the present invention, there will be changes in the specific implementation methods and application scope. In summary, the contents of this specification should not be understood as limiting the present invention.

Claims

1. Grading distribution device, characterized in that: include: A grading structure, the grading structure comprising at least one grading screen, the grading screen forming an angle with a horizontal plane; A cloth structure, wherein the cloth structure is arranged below the hierarchical structure and a portion of the hierarchical structure is projected in the vertical direction on the cloth structure; the cloth structure includes at least two cloth units, each of which includes a storage portion and a cloth portion, the storage portion being connected to the cloth portion, the storage portion being arranged close to one side of the hierarchical structure, and the cloth portion being arranged close to the bearing unit.

2. The grading distribution device according to claim 1, characterized in that: The angle formed between the grading screen and the horizontal plane is greater than 0 degrees and less than 90 degrees, including 15 degrees, 45 degrees, 60 degrees or 75 degrees.

3. The grading material distribution device according to claim 1, characterized in that: The grading screen is further provided with a blocking portion, which is arranged close to one side of the cloth structure.

4. The grading material distribution device according to claim 1, characterized in that: The grading structure includes a first grading screen and a second grading screen, wherein the mesh openings of the first grading screen are larger than the mesh openings of the second grading screen.

5. The grading material distribution device according to claim 4, characterized in that: The first grading screen and the second grading screen are arranged in parallel.

6. The grading material distribution device according to claim 5, characterized in that: The second grading screen is further provided with a flat plate portion and a blocking portion, and the blocking portion is connected to the flat plate portion.

7. The grading material distribution device according to claim 1, characterized in that: The cloth portion includes a funnel structure.

8. The grading material distribution device according to claim 1, characterized in that: The fabric structure includes a first fabric unit and a second fabric unit, and the first fabric unit and the second fabric unit are arranged in parallel; the distance between the first fabric unit and the bearing unit is smaller than the distance between the second fabric unit and the bearing unit.

9. Mineral particle classification distributor, characterized in that: The mineral particle classifying distributor includes: The grading distribution device according to any one of claims 1 to 8; A conveying unit, the conveying unit comprising a first conveying unit and a second conveying unit, the first conveying unit being arranged on the grading distribution device and corresponding to the grading structure; The batch material distribution unit, the second conveying unit is arranged on the batch material distribution unit and corresponds to the batch material distribution unit; the batch material distribution unit and the distribution structure are arranged in parallel; the distance between the batch material distribution unit and the bearing unit is greater than the distance between the distribution structure and the bearing unit.

10. Granular ore processing system, characterized in that: It comprises a sintering machine and the mineral particle grading distributor as claimed in claim 9, wherein the mineral particle grading distributor is arranged above the sintering machine trolley.

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