A sintering wet fine fuel sorting system

Abstract

The application discloses a sintering humid light fine fuel sorting system, which comprises a feeding mechanism, a pre-screening mechanism, a crushing mechanism, a sorting box, a vibrating motor, a wind distribution hole, an air inlet, an air outlet, a discharge port, an air supply mechanism and a dust collector. The vibrating motor is connected with the carrying assembly. The wind distribution hole is arranged on the carrying assembly. The air inlet is arranged below the carrying assembly, and the air outlet is arranged above the carrying assembly. The discharge port is arranged on one side of the carrying assembly. The air supply mechanism is used for conveying airflow from the air inlet to the sorting box. The dust collector is communicated with the air outlet. The pre-screening mechanism and the sorting box are cooperated to control most of fuel particle sizes in the range of 0.5-3 mm, reduce the proportion of -0.5 mm particle size, and improve the combustion efficiency of the fuel. The vibrating motor and the wind distribution hole are adopted to effectively prevent the screen hole from being blocked, improve the screening efficiency, and solve the problem that the existing screening device is easily blocked under the condition of high water content fuel.

Description

Technical Field

[0001] This invention relates to the field of metallurgical sintering technology, and in particular, to a sintering wet light and fine fuel sorting system. Background Technology

[0002] Solid fuel is one of the main fuels used in metallurgical sintering processes and is also a major source of carbon emissions in the iron and steel metallurgical industry. Both excessively coarse and excessively fine solid fuel particles significantly impact fuel utilization efficiency and the performance parameters of sintered ore. Therefore, during sintering, it is generally required to control the fuel particle size within the range of 0.5–3 mm. However, existing one- or two-stage fuel crushing processes lack fine particle sorting devices, making it difficult to accurately control the lower limit of fuel particle size. This results in the proportion of -0.5 mm particles (particle size less than 0.5 mm) in the solid fuel sent to the sintering batching chamber after four-roll crushing reaching over 30%. Simultaneously affected by the requirements of sintering production processes and fuel performance, existing sorting devices on the market are unable to meet the requirements for sorting sintered fuel with a particle size of ±0.5mm. The main reasons are as follows: on the one hand, sintered solid fuels have characteristics such as high moisture content (generally 7-10%, and can reach 13% or even 15% in special cases), small particle size difference (full particle size distribution within the range of 0-5mm), and large output, which makes the existing screening devices prone to clogging of the screen holes during operation, with a screening efficiency of less than 50%; on the other hand, the sintering production process has high requirements for fuel performance parameters, including moisture content. Using wet screening or drying before screening is not only energy-intensive, but also makes it difficult for the finished product to meet the requirements. Summary of the Invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes a sintered wet light and fine fuel sorting system.

[0004] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0005] A sintering wet fine fuel sorting system includes: a feeding mechanism for discharging fuel; a pre-screening mechanism for receiving the fuel from the feeding mechanism and screening it to separate finished fuel and large-particle fuel, which are then discharged independently; a crushing mechanism for receiving and crushing the large-particle fuel from the pre-screening mechanism; a sorting box containing a support assembly connected to a vibration motor; air distribution holes on the support assembly; an air inlet below the support assembly and an air outlet above the support assembly; a discharge port on one side of the support assembly; an air supply mechanism for supplying airflow from the air inlet to the sorting box; a dust collector connected to the air outlet for receiving the airflow carrying fine-particle fuel and intercepting and discharging the fine-particle fuel; a finished fuel conveying mechanism for receiving the fuel discharged from the discharge port and the finished fuel discharged from the pre-screening mechanism; and a fine-particle fuel conveying mechanism for receiving the fine-particle fuel discharged from the dust collector.

[0006] Furthermore, the bottom of the sorting box is provided with an ash discharge pipe, and the ash discharge pipe is provided with an ash discharge valve. The outlet of the ash discharge pipe is located above the fine particulate fuel conveying mechanism, thereby outputting the material to the fine particulate fuel conveying mechanism.

[0007] Furthermore, the upper end of the sorting box on the side away from the discharge port is provided with a feeding mechanism, which includes a feeding hopper, a roller distributor and a discharge hopper. The roller distributor is located at the lower outlet of the feeding hopper to rotate and bring the material into the discharge hopper. The lower end of the discharge hopper is connected to the sorting box.

[0008] Furthermore, the sorting box is equipped with a feeding plate below the hopper, which is used to receive the fuel falling into the hopper. The feeding plate is higher than the bearing assembly, and the feeding plate and the bearing assembly are connected by an inclined chute. A vibrating rod is inserted through the chute, and the vibrating rod protrudes from the side of the chute that contacts the fuel. The vibrating rods are arranged at intervals along the direction perpendicular to the fuel flow.

[0009] Furthermore, the bearing assembly includes a plurality of spaced-apart air distribution plates, and the air distribution holes are provided on the air distribution plates; the height of the plurality of air distribution plates gradually decreases along the fuel flow direction, and adjacent air distribution plates are connected by a material distribution plate, and the material distribution plate is provided with a material distribution grid.

[0010] Furthermore, the sorting box includes a base box and a cover, with the cover covering the base box; the supporting assembly is connected to the base box.

[0011] Furthermore, a baffle assembly is connected to the bottom of the cover, and the baffle assembly is located above the air distribution plate.

[0012] Furthermore, the baffle assembly includes a mounting side plate and a baffle, the mounting side plate being connected and fixed to the cover; the end of the baffle is connected to the mounting side plate, and the baffle is inclined relative to the horizontal plane.

[0013] Furthermore, the baffle is provided in multiple groups, with the baffles in the same group arranged at intervals along the horizontal direction, and the baffles in adjacent groups having opposite inclination directions.

[0014] Furthermore, a telescopic drive mechanism is installed on the mounting side plate. One end of the telescopic drive mechanism is hinged to the mounting side plate, and the other end is hinged to a linkage bar. The end of the baffle is provided with a hinge plate, which is hinged to the mounting side plate. The hinge plates on the baffles in the same group are connected in series by a series rod. The series rod is hinged to the hinge plate, and the hinge position of the series rod to the hinge plate and the hinge position of the hinge plate to the mounting side plate are staggered. The linkage bar is hinged to the series rods corresponding to all the baffles in all groups.

[0015] The present invention has the following beneficial effects:

[0016] Through the coordinated operation of the pre-screening mechanism and the sorting box, the system can control the fuel particle size mostly within the range of 0.5–3 mm, reducing the proportion of -0.5 mm particles and thus improving fuel combustion efficiency. The design of the vibrating motor and air distribution holes effectively prevents screen clogging, improving screening efficiency and solving the problem of easy clogging in existing screening devices under high moisture content fuel conditions. The sintering wet light and fine fuel sorting system avoids the high energy consumption of wet screening or drying followed by screening. By directly sorting wet fuel, energy consumption is reduced while ensuring that the performance of the finished fuel meets the requirements of sintering production. The design of the finished fuel conveying mechanism and the fine particulate fuel conveying mechanism allows for rapid and independent output of both, improving the overall production efficiency of the sintering fuel sorting process. The use of a dust collector not only improves the recovery rate of fine particulate fuel but also reduces dust emissions, which is beneficial to environmental protection.

[0017] In addition to the objectives, features, and advantages described above, the present invention has other objectives, features, and advantages. The invention will now be described in further detail with reference to the figures. Attached Figure Description

[0018] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 This is a partial structural schematic diagram of the present invention;

[0021] Figure 3 This is a schematic diagram of the relevant structure of the sorting box;

[0022] Figure 4 This is a schematic diagram of the connection structure between the baffle assembly and the cover;

[0023] Figure 5 This is a structural diagram of the material blocking assembly;

[0024] Figure 6 yes Figure 5 Enlarged view of point A;

[0025] Figure 7 This is a curve showing the change in solid energy consumption of sinter as a percentage of fuel with a diameter of <0.5mm, according to one embodiment.

[0026] Figure 8 This is a curve showing the change in the amount of fuel required to supplement sinter as a function of the proportion of fuel <0.5mm after air separation, according to one embodiment.

[0027] Legend:

[0028] Feeding mechanism 100, feeding belt 110, transition bin 120;

[0029] Pre-screening mechanism 200;

[0030] Crushing mechanism 300;

[0031] Sorting box 400, bottom box 401, cover 402, bearing assembly 410, vibrating motor 411, material distribution grid 412, air distribution plate 413, material distribution plate 414, air inlet 420, air outlet 421, discharge port 430, ash discharge pipe 440, ash discharge valve 441, material distribution plate 450, chute 460, vibrating rod 461;

[0032] Feeding mechanism 470, feeding hopper 471, circular roller distributor 472, unloading hopper 473;

[0033] Air supply mechanism 500;

[0034] Dust collector 600, exhaust duct 610, dust collector fan 620;

[0035] Finished fuel conveying mechanism 700;

[0036] Fine particulate fuel delivery mechanism 800;

[0037] Material stop assembly 900, mounting side plate 910, baffle 920, hinge plate 921, telescopic drive mechanism 930, linkage bar 931, and connecting rod 940. Detailed Implementation

[0038] It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0039] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0040] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0041] Furthermore, the use of terms such as "first" and "second" in this invention is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this invention.

[0042] Please refer to Figure 1 and Figure 2 A preferred embodiment of the present invention provides a sintering wet light and fine fuel sorting system, including a feeding mechanism 100, a pre-screening mechanism 200, a crushing mechanism 300, a sorting box 400, an air supply mechanism 500, a dust collector 600, a finished fuel conveying mechanism 700, and a fine particulate fuel conveying mechanism 800.

[0043] The feeding mechanism 100 is used to output fuel. The feeding mechanism 100 includes a feeding belt 110 and a transition chamber 120. The feeding belt 110 transports fuel to the transition chamber 120. The bottom of the transition chamber 120 is connected to a feeding mechanism to output fuel to the pre-screening mechanism 200.

[0044] The pre-screening mechanism 200 receives the fuel output from the feeding mechanism 100 and screens it. The pre-screening mechanism 200 separates the fuel into finished fuel and large-particle fuel, which are then output independently. Finished fuel particles smaller than 3mm directly enter the finished fuel conveying mechanism 700. The proportion of fuel particles smaller than 0.5mm in the finished fuel is small and does not affect fuel quality. The pre-screening mechanism 200 can be a screen cylinder. Smaller finished fuel particles are screened out and conveyed to the finished fuel conveying mechanism 700, while larger fuel particles are separated and sent to the crushing mechanism 300.

[0045] The crushing mechanism 300 is used to receive large fuel particles output from the pre-screening mechanism 200 and crush them. After crushing, there will be a large number of fuel particles with a diameter of less than 0.5 mm, which need to be screened out to avoid affecting the fuel quality. The crushing mechanism 300 can be a four-roll crusher.

[0046] The sorting box 400 is equipped with a bearing assembly 410, which is connected to a vibrating motor 411. The bearing assembly 410 is provided with air distribution holes. The sorting box 400 has an air inlet 420 below the bearing assembly 410 and an air outlet 421 above the bearing assembly 410. The sorting box 400 has a discharge port 430 on one side of the bearing assembly 410. The material is carried on the bearing assembly 410, and through the vibration of the vibrating motor, the fuel gradually flows towards the discharge port 430. The airflow enters through the air inlet 420 and blows the fuel on the bearing assembly 410 through the air distribution holes, thereby blowing up the fine fuel particles and discharging them from the air outlet 421 with the airflow, thus realizing the sorting of fine fuel particles.

[0047] The air supply mechanism 500 is used to deliver airflow from the air inlet 420 to the sorting box 400; the air supply mechanism 500 may be a blower to provide airflow.

[0048] The dust collector 600 is connected to the air outlet 421. The dust collector 600 is used to receive the airflow carrying fine particulate fuel and intercept the fine particulate fuel for external output. The dust collector 600 can be a bag filter dust collector, and the bottom of the bag filter dust collector is provided with a fine particulate fuel discharge port to output the fine particulate fuel to the fine particulate fuel conveying mechanism 800. The top of the bag filter dust collector is connected to the dust collection fan 620 through the exhaust pipe 610.

[0049] The finished fuel conveying mechanism 700 is used to receive fuel output from the discharge port 430 and finished fuel output from the pre-screening mechanism 200. The finished fuel conveying mechanism 700 can be a conveyor belt.

[0050] The fine particulate fuel conveying mechanism 800 is used to receive the fine particulate fuel output from the dust collector 600. The fine particulate fuel conveying mechanism 800 can be a conveyor belt.

[0051] This invention provides a sintering wet light and fine fuel sorting system. Through the coordinated operation of the pre-screening mechanism 200 and the sorting box 400, the system can control the fuel particle size mostly within the range of 0.5-3mm, reducing the proportion of -0.5mm particles and thus improving fuel combustion efficiency. The design of the vibrating motor 411 and air distribution holes effectively prevents screen clogging, improves screening efficiency, and solves the problem of easy clogging in existing screening devices under high moisture content fuel conditions. The sintering wet light and fine fuel sorting system avoids the high energy consumption operations of wet screening or drying followed by screening. By directly sorting the wet fuel, energy consumption is reduced while ensuring that the performance of the finished fuel meets the requirements of sintering production. The design of the finished fuel conveying mechanism 700 and the fine particulate fuel conveying mechanism 800 allows for rapid and independent output of finished fuel and fine particulate fuel, improving the production efficiency of the entire sintering fuel sorting process. The use of the dust collector 600 not only improves the recovery rate of fine particulate fuel but also reduces dust emissions, which is beneficial to environmental protection.

[0052] Reference Figure 2 In some embodiments of the present invention, the bottom of the sorting box 400 is provided with an ash discharge pipe 440, and an ash discharge valve 441 is provided on the ash discharge pipe 440. The outlet of the ash discharge pipe 440 is located above the fine particulate fuel conveying mechanism 800, thereby outputting the material to the fine particulate fuel conveying mechanism 800. A certain amount of fine particles will accumulate at the bottom of the sorting box 400. The ash discharge valve 441 needs to be opened from time to time to discharge them. The accumulated fine particulate fuel is sent to the fine particulate fuel conveying mechanism 800 for utilization, thereby improving fuel utilization. Specifically, the bottom of the sorting box 400 has multiple air chambers, and each air chamber is provided with an ash discharge pipe 440 at its bottom. In addition, each air chamber is also provided with an air inlet 420, thereby realizing multi-position air intake, so that the airflow acts more evenly on the bearing component 410.

[0053] Reference Figure 3 In some embodiments of the present invention, a feeding mechanism 470 is provided at the upper end of the side of the sorting box 400 away from the discharge port 430. The feeding mechanism 470 includes a feeding hopper 471, a roller distributor 472, and a discharge hopper 473. A conveyor belt is usually provided above the feeding hopper 471 to receive the fuel crushed by the crushing mechanism 300 and send it to the feeding hopper 471 for combustion. The roller distributor 472 is located at the lower outlet of the feeding hopper 471 to rotate and carry the material into the discharge hopper 473. The roller distributor 472 includes a roller and a motor that drives the roller to rotate. There is a gap between the roller and the edge of the lower opening of the feeding hopper 471, and the material is driven to flow out through the gap to the discharge hopper 473 by the rotation of the roller. The lower end of the discharge hopper 473 is connected to the sorting box 400. Specifically, the upper end of the side of the sorting box 400 away from the discharge port 430 is provided with a feeding port that is connected to the discharge hopper 473. Figure 3As shown, the discharge port 430 is located on the right side of the sorting box 400, and the feeding mechanism 470 is located at the upper left side of the sorting box 400, with the material flowing from the left to the right.

[0054] Reference Figure 3 In some embodiments of the present invention, a distribution plate 450 is provided below the feed hopper 473 inside the sorting box 400. The distribution plate 450 is used to receive the fuel falling into the feed hopper 473. The distribution plate 450 is higher than the bearing component 410. The distribution plate 450 and the bearing component 410 are connected by an inclined chute 460. A vibrating rod 461 is provided on the chute 460. The vibrating rod 461 protrudes from the side of the chute 460 that contacts the fuel. The vibrating rods 461 are arranged at intervals perpendicular to the fuel flow direction. The vibrating rods 461 are connected to a high-frequency vibrator, so that the distribution plate 450 and the chute 461 are provided with vibration. At the same time, the material is evenly dispersed by the vibrating rods 461 after passing through the vibrating rods 461, thereby reducing fuel agglomeration.

[0055] Reference Figure 3 In a further embodiment of the present invention, the supporting component 410 includes a plurality of spaced-apart air distribution plates 413, which are arranged at intervals along the material flow direction, i.e., spaced-apart along the left-right direction. It is understood that the number and position of the air chambers and air distribution plates 413 correspond to the number of air inlets, achieving uniform air distribution. Air distribution holes are provided on the air distribution plates 413, specifically arranged in a matrix. The height of the plurality of air distribution plates 413 gradually decreases along the fuel flow direction. Adjacent air distribution plates 413 are connected by a distribution plate 414, which is inclined, allowing the fuel to flow downwards at an angle. It is understood that, for smoother fuel flow, the air distribution plates 413 may also be slightly inclined, with the right side being lower than the left. The distribution plate 414 is provided with a distribution grid 412, further dispersing the fuel and preventing it from clumping during flow. The fuel is evenly distributed on the air distribution plates 413 and uniformly sorted, ensuring a good sorting effect.

[0056] Reference Figure 3 In a further embodiment of the invention, the sorting box 400 includes a base box 401 and a cover 402, with the cover 402 covering the base box 401; a support assembly 410 is connected to the base box 401 for easy installation. An air chamber forms part of the bottom structure of the base box 401. A discharge pipe extending downwards at the right end of the cover 402 is provided, with a discharge port 430 formed in the discharge pipe. The right side of the rightmost air distribution plate 413 extends to the upper end of the discharge pipe, so that the material output by the air distribution plate 413 falls into the discharge pipe and is discharged from the discharge port 430.

[0057] Reference Figure 3In a further embodiment of the present invention, a baffle assembly 900 is connected to the bottom of the cover 402. The baffle assembly 900 is located above the air distribution plate 413, thereby preventing material from being directly discharged from the air outlet 421. It can be understood that the number and position of the baffle assembly 900 and the air distribution plate 413 are correspondingly arranged to achieve multi-stage air separation. The fuel is dispersed under the action of the baffle assembly 900, and multi-stage baffle and air separation are performed using multiple air distribution plates 413 and the baffle assembly 900. Fine dust particles are discharged from the air outlet 421, and larger particles after air separation are discharged from the discharge port 430. In the process of vibration conveying and fluidized separation, the steps of material dispersion (vibrating rod 461) and baffle dispersion (baffle assembly 900) are added, which solves the technical problem of poor separation efficiency of existing fuel separation devices for sintered wet fuel.

[0058] Reference Figure 4 , Figure 5 and Figure 6 In a further embodiment of the present invention, the baffle assembly 900 includes a mounting side plate 910 and a baffle 920. The mounting side plate is connected and fixed to the cover 402, which can be connected and fixed using connecting rods and fasteners. It is understood that, in order to reduce the vibration transmitted from the vibrating motor to the cover 402 and the baffle assembly 900, the cover 402 and the base box 401 are connected by a flexible connection, so that only a portion of the structure vibrates during vibration operation, thereby reducing the vibration load on the system. The end of the baffle 920 is connected to the mounting side plate 910, and the baffle 920 is inclined relative to the horizontal plane to increase the blocking area.

[0059] Reference Figure 4 , Figure 5 and Figure 6 In a further embodiment of the present invention, the baffle 920 is provided in multiple groups, and the baffles 920 in the same group are arranged at intervals in the horizontal direction. The baffles 920 in adjacent groups have opposite inclination directions, thereby realizing multiple material blocking. Moreover, the baffles 920 in adjacent groups have opposite inclination directions, which can disturb the airflow and further improve the material blocking effect.

[0060] Reference Figure 4 , Figure 5 and Figure 6In a further embodiment of the present invention, a telescopic drive mechanism 930 is mounted on the mounting side plate 910. One end of the telescopic drive mechanism 930 is hinged to the mounting side plate 910, and the other end is hinged to a linkage bar 931. This mechanism can be a telescopic motor, a telescopic cylinder, or a telescopic hydraulic cylinder. The extension and retraction of the telescopic drive mechanism 930 drives the linkage bar 931 to extend and retract. To achieve stable driving, the telescopic drive mechanism 930 has two sets symmetrically arranged vertically, thereby connecting and driving the vertical position of the linkage bar 931, ensuring stable operation of the linkage bar 931. Furthermore, the hinged ends of the telescopic drive mechanism 930 prevent structural interference, allowing the linkage bar 931 to move smoothly left and right. The end of the baffle 920 is provided with a hinge plate 921, which is hinged to the mounting side plate 910. The hinge plates 921 on the baffles 920 in the same group are connected in series by a connecting rod 940. The connecting rod 940 is hinged to the hinge plate 921, and the hinge positions of the connecting rod 940 and the hinge plate 921 and the hinge positions of the hinge plate 921 and the mounting side plate 910 are staggered. The linkage bar 931 is hinged to the corresponding connecting rod 940 of all the baffles 920 in the group. Utilizing the action of the connecting rod 940 and the linkage bar 931, the linkage bar 931 can drive all the baffles 920 to rotate and change the tilt angle to adjust the material blocking effect.

[0061] While the sintering wet light and fine fuel sorting system proposed in this invention can improve fuel utilization efficiency and reduce solid energy consumption by reducing the proportion of -0.5mm particle size fuel in the sintering fuel, the amount of usable fuel for sintering production will also decrease after removing the -0.5mm particle size fuel. Therefore, to meet the requirements of sintering production, it is necessary to replenish fuel to compensate for the heat loss caused by the removal of -0.5mm particle size fuel before and after air classification. This invention also provides a calculation method to calculate the required fuel replenishment:

[0062] Steel plant Am 2 Sintering machine, production coefficient is Bt / m 2 If the solid fuel consumption is C t / h, then the corresponding fuel consumption per ton of ore is:

[0063] D = C × 1000 / A × B.

[0064] Assuming that the proportion of -0.5mm particle size fuel in the sintered fuel after sorting is E%, then the remaining usable fuel quantity per ton of ore is:

[0065] F = (CC × E%)1000 / A × B.

[0066] The decrease in the amount of fuel available per ton of ore is G = DF.

[0067] After sorting, the proportion of -0.5mm particle size fuel in the sintering fuel decreased to 15%, and the corresponding solid energy consumption value decreased by Hkg / t.

[0068] The required amount of solid fuel is:

[0069] J = GH.

[0070] 360m steel plant 2 Taking the sintering machine as an example, the production coefficient is 1.35 t / m. 2 If the solid fuel consumption is 25 t / h, then the corresponding fuel consumption per ton of ore is:

[0071] 25×1000 / 360×1.35=51.44kg / t.

[0072] Assuming that -0.5mm particle size fuel accounts for 15% of the sintered fuel after sorting, the remaining usable fuel quantity per ton of ore is:

[0073] (25-25×15%)1000 / 360×1.35=43.72kg / t.

[0074] The decrease in usable fuel per ton of ore is then:

[0075] 51.44 - 43.72 = 7.72 kg / t.

[0076] Figure 7 The solid energy consumption values ​​of sintered ore corresponding to different proportions of -0.5mm particle size fuel are given. As the proportion of -0.5mm particle size fuel in sintered ore decreases from 30% to 15% before and after separation, the corresponding solid energy consumption value decreases by 2.66 kg / t.

[0077] Therefore, the amount of solid fuel that needs to be replenished is

[0078] 7.72 - 2.66 = 5.06 kg / t.

[0079] Based on the above calculation method, the amount of fuel required to supplement the fuel can be calculated according to the proportion of fuel of different -0.5mm particle size after air separation. The calculation results are as follows: Figure 8 As shown.

[0080] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A sintered, moist, light, and fine fuel sorting system, characterized in that, include: Feeding mechanism (100) for discharging fuel; The pre-screening mechanism (200) is used to receive the fuel output from the feeding mechanism (100) and screen the fuel to separate the finished fuel and large particulate fuel and output them separately. The crushing mechanism (300) is used to receive large fuel particles output from the pre-screening mechanism (200) and crush them. A sorting box (400) is provided inside the sorting box (400), and a bearing assembly (410) is connected to the bearing assembly (410). The bearing assembly (410) is provided with air distribution holes. The sorting box (400) is provided with an air inlet (420) below the bearing assembly (410) and an air outlet (421) above the bearing assembly (410). The sorting box (400) is provided with a discharge port (430) on one side of the bearing assembly (410). An air supply mechanism (500) is used to deliver airflow from the air inlet (420) toward the sorting box (400); The dust collector (600) is connected to the air outlet (421) and is used to receive the airflow carrying fine particulate fuel and intercept the fine particulate fuel for external output; The finished fuel conveying mechanism (700) is used to receive the fuel output from the discharge port (430) and the finished fuel output from the pre-screening mechanism (200); Fine particulate fuel conveying mechanism (800) for receiving fine particulate fuel output from dust collector (600); The sorting box (400) includes a bottom box (401) and a cover (402), the cover (402) being positioned over the bottom box (401); The bottom of the cover (402) is connected to a baffle assembly (900); The baffle assembly (900) includes a mounting side plate (910) and a baffle (920). The mounting side plate is connected and fixed to the cover (402). The end of the baffle (920) is connected to the mounting side plate (910). The baffle (920) is inclined relative to the horizontal plane. There are multiple sets of baffles (920). The baffles (920) in the same set are arranged at intervals along the horizontal direction. The inclination directions of the baffles (920) in adjacent sets are opposite. The bearing component (410) includes a plurality of spaced air distribution plates (413), and the air distribution holes are provided on the air distribution plates (413). The baffle assembly (900) is located above the air distribution plate (413); A telescopic drive mechanism (930) is installed on the mounting side plate (910). One end of the telescopic drive mechanism (930) is hinged to the mounting side plate (910), and the other end is hinged to a linkage bar (931). The end of the baffle (920) is provided with a hinge plate (921). The hinge plate (921) is hinged to the mounting side plate (910). The hinge plates (921) on the baffles (920) in the same group are connected in series by a series rod (940). The series rod (940) is hinged to the hinge plate (921), and the hinge position of the series rod (940) and the hinge position of the hinge plate (921) and the mounting side plate (910) are staggered. The linkage bar (931) is hinged to the corresponding series rod (940) of all the baffles (920).

2. The sintered wet light and fine fuel sorting system according to claim 1, characterized in that, The bottom of the sorting box (400) is provided with an ash discharge pipe (440), and an ash discharge valve (441) is provided on the ash discharge pipe (440). The outlet of the ash discharge pipe (440) is located above the fine particulate fuel conveying mechanism (800), thereby outputting the material to the fine particulate fuel conveying mechanism (800).

3. The sintered wet light and fine fuel sorting system according to claim 1, characterized in that, The sorting box (400) is provided with a feeding mechanism (470) on the upper end of the side away from the discharge port (430). The feeding mechanism (470) includes a feeding hopper (471), a roller distributor (472), and a discharge hopper (473). The roller distributor (472) is located at the lower outlet of the feeding hopper (471) to rotate and carry the material into the discharge hopper (473). The lower end of the discharge hopper (473) is connected to the sorting box (400).

4. The sintered wet light and fine fuel sorting system according to claim 1, characterized in that, The sorting box (400) has a feeding plate (450) below the feeding hopper (473). The feeding plate (450) is used to receive the fuel falling into the feeding hopper (473). The feeding plate (450) is higher than the bearing component (410). The feeding plate (450) and the bearing component (410) are connected by an inclined chute (460). A vibrating rod (461) is installed on the chute (460). The vibrating rod (461) protrudes from the side of the chute (460) that contacts the fuel. The vibrating rods (461) are arranged at intervals perpendicular to the fuel flow direction.

5. The sintered wet light and fine fuel sorting system according to claim 4, characterized in that, The height of the multiple air distribution plates (413) gradually decreases along the fuel flow direction, and adjacent air distribution plates (413) are connected by a material distribution plate (414), on which a material distribution grid (412) is provided.

6. The sintered wet light and fine fuel sorting system according to claim 4, characterized in that, The load-bearing component (410) is connected to the base box (401).

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