Low-carbon sintering device

Abstract

The utility model discloses a low-carbon sintering device which comprises a sintering machine and a distributor. The system comprises a first ignition furnace, a first oxygen spraying pipe group, a second ignition furnace, a second oxygen spraying pipe group, a sintering actual condition data acquisition system, a data processing system and the like from a machine head of the sintering machine to the machine. The first ignition furnace, the first oxygen spraying pipe set, the second ignition furnace and the second oxygen spraying pipe set are arranged on the sintering machine in series, the same different sintering modes can be started according to changes of sintering working conditions, then the purpose of low-carbon sintering is achieved at low cost and high efficiency, and the sintering yield can be increased while sintering energy consumption is reduced. In addition, the device has the advantages of being simple in overall structure, convenient to operate, wide in application range, high in practicability and the like.

Description

Technical Field

[0001] This utility model relates to a sintering equipment, specifically a low-carbon sintering device, and belongs to the field of steel sintering technology. Background Technology

[0002] Sintering is a key process in the steelmaking process and bears a heavy responsibility for carbon reduction.

[0003] Sintering is one of the main methods for iron ore agglomeration in the steelmaking process. Currently, the mainstream sintering process uses blast sintering, with key equipment including belt sintering machines, ignition and holding furnaces, material distributors, and annular coolers. Due to its high single-machine output and high degree of mechanization and automation, the belt sintering machine has become the absolute mainstream in global sintering production. Currently, due to various limitations in the ignition stage of sintering, a significant amount of residual carbon remains on the material surface after ignition. Since residual carbon is an ineffective energy source, it leads to a waste of energy resources, resulting in high energy consumption and carbon emissions in the overall sintering process, hindering carbon reduction in the steel industry. The residual carbon also creates a reducing atmosphere in localized areas of the material surface, reducing the production of composite calcium ferrite required for normal sintering. This increases the amount of ore returned from the sintering surface, further hindering the improvement of the overall sintering yield. Furthermore, residual carbon enters the downstream annular cooling process along with the sintered ore. Inside the annular cooler, the residual carbon is re-ignited by high-temperature air, causing a secondary sintering reaction that re-sintersects the already broken sintered ore into larger pieces. This prevents normal material discharge from the lower part of the annular cooler, potentially leading to production accidents. Utility Model Content

[0004] To address the problems of high residual carbon content in existing sintering processes, which leads to high sintering energy consumption and low yield, this invention provides a low-carbon sintering device. This device uses a sintering data acquisition system to monitor sintering data in real time. Based on changes in this data, one or more of the following can be selectively introduced into the sintering process: a first ignition furnace, a first oxygen injection pipe group, a second ignition furnace, and a second oxygen injection pipe group. This achieves low-cost combustion of residual carbon in the sintering material, reducing sintering energy consumption while increasing the yield.

[0005] To achieve the above-mentioned technical objectives, the technical solution adopted by this utility model is as follows:

[0006] A low-carbon sintering apparatus includes a sintering machine and a feeder disposed at the head of the sintering machine. Along the direction from the head to the tail of the sintering machine, a first ignition furnace, a first oxygen injection pipe assembly, a second ignition furnace, and a second oxygen injection pipe assembly are also sequentially disposed on the sintering machine.

[0007] The device also includes a sintering real-time data acquisition system and a data processing system. The sintering real-time data acquisition system is installed on or next to the sintering machine, and the data processing system is installed next to the sintering machine and is associated with the sintering real-time data acquisition system.

[0008] Preferably, the sintering data acquisition system is a sintering mixture composition detection system, which is located beside the material distributor and connected to the distributor via a sampling mechanism. The sintering mixture composition detection system is connected to the data processing system via a data transmission line.

[0009] Preferably, the sampling mechanism is a sampling tube or a sampling mechanical shovel.

[0010] Preferably, the sintering mixture composition detection system includes a particle size analyzer, an iron content analyzer, and a moisture content analyzer.

[0011] Preferably, the sintering real-time data acquisition system is a sintering material surface identification system, which is installed on the sintering machine fume hood located between the first ignition furnace and the first oxygen injection pipe group. The sintering material surface identification system is connected to the data processing system via a data transmission line.

[0012] Preferably, the sintering material surface recognition system includes a material surface reflectivity recognition camera, a material surface color recognition camera, and a material surface crack recognition camera.

[0013] Preferably, the sintering real-time data acquisition system is a tail section recognition system, which is mounted on the downstream side of the tail of the sintering machine via a bracket. The tail section recognition system is connected to the data processing system via a data transmission line.

[0014] Preferably, the tail section recognition system includes a section red layer brightness recognition camera, a section red layer color recognition camera, a section red layer continuity recognition camera, a section red layer thickness recognition camera, and a section red layer height recognition camera.

[0015] Preferably, the sintering real-time data acquisition system comprises several flue gas oxygen content detectors, each installed in one of several air boxes located at the bottom of the sintering machine head. All flue gas oxygen content detectors are connected to the data processing system via data transmission lines.

[0016] Preferably, the first ignition furnace includes a furnace body and a burner. The furnace body is mounted on the fume hood of the sintering machine, and a through-hole for the burner, narrow at the top and wide at the bottom, is provided on the top of the furnace body. The bottom end of the burner through-hole communicates with the inner cavity of the fume hood of the sintering machine. The upper part of the burner is connected to the top of the furnace body via an angle adjustment mechanism, and the lower end of the burner extends into the burner through-hole and reaches the bottom end of the burner through-hole. The angle adjustment mechanism adjusts the tilt angle of the burner in the vertical plane.

[0017] Preferably, multiple burners are evenly arranged on the furnace body of the first ignition furnace.

[0018] Preferably, the angle adjustment mechanism includes a fixed plate and telescopic rods. The fixed plate is sleeved on the upper part of the burner. The bottom surface of the fixed plate is connected to the top surface of the furnace body through at least two telescopic rods, and the fixed plate and the telescopic rods are hinged. The tilt angle of the fixed plate relative to the horizontal plane is adjusted by adjusting the height of each of the two telescopic rods in the vertical direction, thereby adjusting the tilt angle of the burner in the vertical plane.

[0019] Preferably, the telescopic rod includes a drive motor, a cylinder, and a piston rod. The cylinder is located on the top surface of the furnace body, the drive motor is located on one side of the cylinder and connected to the cylinder, the bottom end of the piston rod is connected to the cylinder, and its top end is hinged to the bottom surface of the fixed plate.

[0020] Preferably, the first ignition furnace is also supported above the sintering machine's fume hood by a vertical pole, the bottom end of which is connected to the sintering machine frame or the ground via casters. The horizontal position of the first ignition furnace on the sintering machine's fume hood is adjusted using the vertical pole and casters in the horizontal direction of the sintering material's movement.

[0021] Preferably, the structure of the second ignition furnace is the same as that of the first ignition furnace.

[0022] Preferably, the first oxygen injection pipe assembly includes an oxygen injection pipe and an oxygen delivery pipe. The inlet end of the oxygen injection pipe is connected to the oxygen delivery pipe, and its jet end passes through the fume hood of the sintering machine and is connected to the inner cavity of the fume hood.

[0023] Preferably, the first oxygen injection pipe group includes multiple oxygen injection pipes and oxygen delivery pipes matching the number of oxygen injection pipes, with each oxygen delivery pipe independently equipped with a throttle valve.

[0024] Preferably, the structure of the second oxygen injection tube assembly is the same as that of the first oxygen injection tube assembly.

[0025] Preferably, the data processing system is a computer data processing terminal.

[0026] In this invention, a first ignition furnace, a first oxygen injection pipe group, a second ignition furnace, and a second oxygen injection pipe group are sequentially arranged along the length of a sintering machine (including a frame, trolley, fume hood, wind box, etc., i.e., any sintering machine in the prior art) from the head to the tail. Depending on the actual working conditions (mainly aiming to burn off as much residual carbon as possible from the sintering material surface), one or more of these devices can be selectively activated to participate in the sintering process. This allows for the fulfillment of various sintering modes (mainly including, for example, primary ignition + primary oxygen blowing mode, primary ignition + secondary ignition mode, primary ignition + primary oxygen blowing + secondary ignition mode, primary ignition + secondary ignition + secondary oxygen blowing mode, primary ignition + primary oxygen blowing + secondary ignition + secondary oxygen blowing mode, etc.). This enables low-carbon sintering treatment of sintering mixtures with different properties with low energy consumption, while ensuring the quality of the sintered product.

[0027] In this utility model, the sintering real-time data acquisition system is mainly a collection of various detection devices for detecting sintering real-time parameter data (such as the composition and state of the sintering mixture, the state of the sintering material surface after ignition and sintering, the cross-sectional state of the sintering material after ignition and sintering, and the composition of sintering flue gas, etc.). These detection devices are all existing mature products that can be purchased on the market or detection devices disclosed in existing technical documents (e.g., when it is necessary to detect the flue gas composition, the flue gas oxygen content detector can be the RHO-702 high-temperature guiding flue gas oxygen analyzer / oxygen content detector produced by Wuhan Ruiheng Industrial Control Technology Co., Ltd., etc.). If it is necessary to detect the state of the sintering material surface or cross-sectional state, etc... The self-identification camera can be a Hikvision MV-CS050-10UM / UC / PRO 5MP robot vision industrial camera manufactured by Beijing Juntiantongda Technology Co., Ltd. If it is necessary to detect the ion, iron, and moisture content of the sintered mixture, a detection system for the moisture and particle size composition of the sintered mixture disclosed in CN201910627909.2 can be used. It should be noted that the compositional state data of the sintered mixture can generally be clearly obtained during its batching process. Therefore, in addition to obtaining it through online detection, it can also be directly input manually into the data processing system, i.e., there is no need to set up an additional sintered mixture composition detection system.

[0028] In this invention, the material surface reflectivity recognition camera, the material surface color recognition camera, and the material surface crack recognition camera can be multiple independent industrial cameras arranged in parallel, or they can be integrated into one industrial camera. Similarly, the cross-sectional red layer brightness recognition camera, the cross-sectional red layer color recognition camera, the cross-sectional red layer continuity recognition camera, the cross-sectional red layer thickness recognition camera, and the cross-sectional red layer height recognition camera can also be multiple independent industrial cameras arranged in parallel, or they can be integrated into one industrial camera. The selection is based on the actual working conditions.

[0029] In this invention, the existing ignition burners of the sintering ignition and heat preservation furnace use gas ignition, resulting in a distinct columnar flame with varying temperatures in the outer flame, inner flame, and flame core. Furthermore, the temperature difference between areas with and without flame is significant. This easily leads to uneven ignition of the iron ore sintering material surface, frequently causing localized over-melting or under-melting of the material surface. Consequently, the overall energy consumption of sintering increases, and carbon emissions rise. To address this issue, this invention designs a rotatable and adjustable ignition burner. Specifically, the upper part of the burner is connected to the furnace body via an angle adjustment mechanism, and the lower end of the burner extends into a pre-set through-hole in the furnace body, which has a narrower upper section and a wider lower section. The angle adjustment mechanism mainly includes a fixing plate for fixing the burner and at least two telescopic rods (each telescopic rod consists of an independent drive motor, cylinder, and piston rod). By adjusting the height of the two telescopic rods, the fixing plate is tilted at a certain angle relative to the horizontal plane, thereby causing the burner to tilt to a certain degree in the vertical direction. By alternating the height of the two telescopic rods, the burner can reciprocate in the vertical direction, allowing the high-temperature flame emitted by the burner to move back and forth on the sintering material surface, thus improving the heat transfer uniformity of the sintering material surface and ensuring the uniformity of ignition. It should be noted that, depending on the size of the sintering material surface, several evenly distributed, angle-adjustable burners are designed inside the sintering ignition furnace to ensure uniform ignition of the entire sintering material surface.

[0030] In this invention, generally, the running speed of the sintering mixture is relatively stable during the sintering process. However, due to fluctuations in the composition of the sintering mixture, when two-stage ignition is required, in order to achieve precise control of the time interval between the two ignitions, the first and / or second ignition furnaces are designed to be freely movable along the running direction of the sintering material on the sintering machine. That is, given a fixed running speed of the sintering material, the time interval between the two ignitions is adjusted by changing the distance between the first and second ignition furnaces. Preferably, only the second ignition furnace is designed as a freely movable mechanism. Specifically, the second ignition furnace is supported by a vertical pole with wheels, with the support point being the frame of the sintering machine or the ground. If necessary, guide rails can be laid on the frame of the sintering machine or the ground to ensure the stable and rapid horizontal movement of the second ignition furnace.

[0031] In this invention, the first oxygen injection pipe group and the second oxygen injection pipe group have the same structure, both consisting of several oxygen injection pipes and matching oxygen delivery pipes, and the amount of oxygen injected in each oxygen injection pipe can be adjusted independently, and can be adjusted in real time according to the changes in the amount of oxygen injected required by the actual working conditions.

[0032] Compared with the prior art, the beneficial technical effects of this utility model are as follows:

[0033] 1. The low-carbon sintering device of this utility model is equipped with a first ignition furnace, a first oxygen injection pipe group, a second ignition furnace and a second oxygen injection pipe group connected in series on the sintering machine. It can activate different sintering modes according to the changes in sintering conditions, thereby achieving the purpose of low-carbon sintering at low cost and high efficiency. It can improve the sintering yield while reducing sintering energy consumption.

[0034] 2. The low-carbon sintering device of this utility model has a simple overall structure. All accessories can be purchased from the market or prepared by ourselves according to existing technology. It is easy to operate and does not require a lot of modification to the main structure of the sintering machine. It has a wide range of applications and strong practicality. Attached Figure Description

[0035] Figure 1 This is a schematic diagram of the structure of the sintering real-time data acquisition system when it is used as a sintering mixture composition detection system.

[0036] Figure 2 This is a schematic diagram of the structure of the sintering real-time data acquisition system when it is used as a sintering material surface identification system.

[0037] Figure 3 This is a schematic diagram of the structure of the sintering real-time data acquisition system when it is used as a tail section identification system.

[0038] Figure 4 A schematic diagram of the structure for timing the detection of oxygen content in flue gas in the sintering real-time data acquisition system.

[0039] Figure 5 This is a schematic diagram of the first and second ignition furnaces.

[0040] Reference numerals in the attached drawings: 1: Sintering machine; 2: Feeder; 3: First ignition furnace; 301: Furnace body; 302: Burner; 303: Burner through hole; 4: First oxygen injection pipe assembly; 401: Oxygen injection pipe; 402: Oxygen supply pipe; 5: Second ignition furnace; 6: Second oxygen injection pipe assembly; 7: Sintering real-time data acquisition system; 8: Data processing system; 9: Angle adjustment mechanism; 901: Fixing plate; 902: Telescopic rod; 10: Vertical pole; 1001: Moving wheel. Detailed Implementation

[0041] The technical solution of this utility model is illustrated below. The scope of protection of this utility model includes, but is not limited to, the following embodiments.

[0042] A low-carbon sintering apparatus includes a sintering machine 1 and a feeder 2 disposed at the head of the sintering machine 1. Along the direction from the head to the tail of the sintering machine 1, a first ignition furnace 3, a first oxygen injection pipe group 4, a second ignition furnace 5, and a second oxygen injection pipe group 6 are also sequentially disposed on the sintering machine 1.

[0043] The device also includes a sintering real-time data acquisition system 7 and a data processing system 8. The sintering real-time data acquisition system 7 is installed on or next to the sintering machine 1, and the data processing system 8 is installed next to the sintering machine 1 and is associated with the sintering real-time data acquisition system 7.

[0044] Preferably, the sintering data acquisition system 7 is a sintering mixture composition detection system, which is located beside the material distributor 2 and connected to the material distributor 2 via a sampling mechanism. The sintering mixture composition detection system is connected to the data processing system 8 via a data transmission line.

[0045] Preferably, the sampling mechanism is a sampling tube or a sampling mechanical shovel.

[0046] Preferably, the sintering mixture composition detection system includes a particle size analyzer, an iron content analyzer, and a moisture content analyzer.

[0047] Preferably, the sintering real-time data acquisition system 7 is a sintering material surface identification system, which is installed on the fume hood of the sintering machine 1 located between the first ignition furnace 3 and the first oxygen injection pipe group 4. The sintering material surface identification system is connected to the data processing system 8 via a data transmission line.

[0048] Preferably, the sintering material surface recognition system includes a material surface reflectivity recognition camera, a material surface color recognition camera, and a material surface crack recognition camera.

[0049] Preferably, the sintering real-time data acquisition system 7 is a tail section recognition system, which is installed downstream of the tail of the sintering machine 1 via a bracket. The tail section recognition system is connected to the data processing system 8 via a data transmission line.

[0050] Preferably, the tail section recognition system includes a section red layer brightness recognition camera, a section red layer color recognition camera, a section red layer continuity recognition camera, a section red layer thickness recognition camera, and a section red layer height recognition camera.

[0051] Preferably, the sintering real-time data acquisition system 7 consists of several flue gas oxygen content detectors, which are respectively installed in several air boxes at the bottom of the sintering machine 1. All flue gas oxygen content detectors are connected to the data processing system 8 via data transmission lines.

[0052] Preferably, the first ignition furnace 3 includes a furnace body 301 and a burner 302. The furnace body 301 is mounted on the fume hood of the sintering machine 1, and a through-hole 303, narrow at the top and wide at the bottom, is provided on the top of the furnace body 301. The bottom end of the burner through-hole 303 communicates with the inner cavity of the fume hood of the sintering machine 1. The upper part of the burner 302 is connected to the top of the furnace body 301 via an angle adjustment mechanism 9, and the lower end of the burner 302 extends into the burner through-hole 303 and extends to the bottom end of the burner through-hole 303. The tilt angle of the burner 302 in the vertical plane is adjusted by the angle adjustment mechanism 9.

[0053] Preferably, a plurality of burners 302 are evenly arranged on the furnace body 301 of the first ignition furnace 3.

[0054] Preferably, the angle adjustment mechanism 9 includes a fixed plate 901 and telescopic rods 902. The fixed plate 901 is sleeved on the upper part of the burner 302. The bottom surface of the fixed plate 901 is connected to the top surface of the furnace body 301 through at least two telescopic rods 902, and the fixed plate 901 and the telescopic rods 902 are hinged. The tilt angle of the fixed plate 901 relative to the horizontal plane is adjusted by adjusting the height of each of the two telescopic rods 902 in the vertical direction, thereby adjusting the tilt angle of the burner 302 in the vertical plane.

[0055] Preferably, the telescopic rod 902 includes a drive motor, a cylinder, and a piston rod. The cylinder is located on the top surface of the furnace body 301, the drive motor is located on one side of the cylinder and connected to the cylinder, the bottom end of the piston rod is connected to the cylinder, and its top end is hinged to the bottom surface of the fixing plate 901.

[0056] Preferably, the first ignition furnace 3 is also supported above the hood of the sintering machine 1 by means of a support rod 10, and the bottom end of the support rod 10 is connected to the frame of the sintering machine 1 or to the ground by means of a caster wheel 1001. In the horizontal direction of the sintering material movement, the horizontal position of the first ignition furnace 3 on the hood of the sintering machine 1 is adjusted by means of the support rod 10 and the caster wheel 1001.

[0057] Preferably, the structure of the second ignition furnace 5 is the same as that of the first ignition furnace 3.

[0058] Preferably, the first oxygen injection pipe group 4 includes an oxygen injection pipe 401 and an oxygen delivery pipe 402. The air inlet end of the oxygen injection pipe 401 is connected to the oxygen delivery pipe 402, and its air jet end passes through the fume hood of the sintering machine 1 and is connected to the inner cavity of the fume hood.

[0059] Preferably, the first oxygen injection pipe group 4 includes multiple oxygen injection pipes 401 and oxygen delivery pipes 402 matching the number of oxygen injection pipes 401, and each oxygen delivery pipe 402 is independently equipped with a throttle valve.

[0060] Preferably, the structure of the second oxygen injection tube group 6 is the same as that of the first oxygen injection tube group 4.

[0061] Preferably, the data processing system 8 is a computer data processing terminal. Example 1

[0062] like Figure 1-5 As shown, a low-carbon sintering apparatus includes a sintering machine 1 and a feeder 2 disposed at the head of the sintering machine 1. Along the direction from the head to the tail of the sintering machine 1, a first ignition furnace 3, a first oxygen injection pipe group 4, a second ignition furnace 5, and a second oxygen injection pipe group 6 are also sequentially disposed on the sintering machine 1.

[0063] The device also includes a sintering real-time data acquisition system 7 and a data processing system 8. The sintering real-time data acquisition system 7 is installed on or next to the sintering machine 1, and the data processing system 8 is installed next to the sintering machine 1 and is associated with the sintering real-time data acquisition system 7. Example 2

[0064] The method is repeated in Example 1, except that the sintering real-time data acquisition system 7 is a sintering mixture composition detection system. This system is located beside the material distributor 2 and connected to it via a sampling mechanism. The sintering mixture composition detection system is connected to the data processing system 8 via a data transmission line. Example 3

[0065] Repeat Example 2, except that the sampling mechanism is a sampling mechanical shovel. Example 4

[0066] Example 3 is repeated, except that the sintering mixture composition detection system includes a particle size analyzer, an iron content analyzer, and a moisture content analyzer. Example 5

[0067] Example 4 is repeated, except that the sintering real-time data acquisition system 7 is a sintering material surface identification system, which is installed on the fume hood of the sintering machine 1 located between the first ignition furnace 3 and the first oxygen injection pipe group 4. The sintering material surface identification system is connected to the data processing system 8 via a data transmission line. Example 6

[0068] Example 5 is repeated, except that the sintering material surface recognition system includes a material surface reflectivity recognition camera, a material surface color recognition camera, and a material surface crack recognition camera. Example 7

[0069] Example 6 is repeated, except that the sintering real-time data acquisition system 7 is a tail section recognition system, which is installed downstream of the tail of the sintering machine 1 via a bracket. The tail section recognition system is connected to the data processing system 8 via a data transmission line. Example 8

[0070] The embodiment 7 is repeated, except that the tail section recognition system includes a section red layer brightness recognition camera, a section red layer color recognition camera, a section red layer continuity recognition camera, a section red layer thickness recognition camera, and a section red layer height recognition camera. Example 9

[0071] The method repeats Example 8, except that the sintering real-time data acquisition system 7 consists of several flue gas oxygen content detectors, which are respectively installed in several air boxes at the bottom of the sintering machine 1. All flue gas oxygen content detectors are connected to the data processing system 8 via data transmission lines. Example 10

[0072] The embodiment 9 is repeated, except that the first ignition furnace 3 includes a furnace body 301 and a burner 302. The furnace body 301 is mounted on the fume hood of the sintering machine 1, and a through-hole 303, narrow at the top and wide at the bottom, is provided on the top of the furnace body 301. The bottom end of the burner through-hole 303 is connected to the inner cavity of the fume hood of the sintering machine 1. The upper part of the burner 302 is connected to the top of the furnace body 301 via an angle adjustment mechanism 9, and the lower end of the burner 302 extends into the burner through-hole 303 and extends to the bottom end of the burner through-hole 303. The tilt angle of the burner 302 in the vertical plane is adjusted by the angle adjustment mechanism 9. Example 11

[0073] Example 10 is repeated, except that multiple burners 302 are evenly arranged on the furnace body 301 of the first ignition furnace 3.

[0074] Preferably, the angle adjustment mechanism 9 includes a fixed plate 901 and telescopic rods 902. The fixed plate 901 is sleeved on the upper part of the burner 302. The bottom surface of the fixed plate 901 is connected to the top surface of the furnace body 301 through at least two telescopic rods 902, and the fixed plate 901 and the telescopic rods 902 are hinged. The tilt angle of the fixed plate 901 relative to the horizontal plane is adjusted by adjusting the height of each of the two telescopic rods 902 in the vertical direction, thereby adjusting the tilt angle of the burner 302 in the vertical plane. Example 12

[0075] Repeat Embodiment 11, except that the telescopic rod 902 includes a drive motor, a cylinder and a piston rod. The cylinder is located on the top surface of the furnace body 301, the drive motor is located on one side of the cylinder and connected to the cylinder, the bottom end of the piston rod is connected to the cylinder, and its top end is hinged to the bottom surface of the fixing plate 901. Example 13

[0076] Example 12 is repeated, except that the first ignition furnace 3 is also mounted above the hood of the sintering machine 1 in a supported manner by a support rod 10, and the bottom end of the support rod 10 is connected to the frame of the sintering machine 1 by a moving wheel 1001. In the horizontal direction of the sintering material movement, the horizontal position of the first ignition furnace 3 on the hood of the sintering machine 1 is adjusted by the support rod 10 and the moving wheel 1001. Example 14

[0077] Example 13 is repeated, except that the structure of the second ignition furnace 5 is the same as that of the first ignition furnace 3. Example 15

[0078] Example 14 is repeated, except that the first oxygen injection pipe group 4 includes an oxygen injection pipe 401 and an oxygen delivery pipe 402. The air inlet end of the oxygen injection pipe 401 is connected to the oxygen delivery pipe 402, and its air jet end passes through the fume hood of the sintering machine 1 and is connected to the inner cavity of the fume hood. Example 16

[0079] Example 15 is repeated, except that the first oxygen injection pipe group 4 includes multiple oxygen injection pipes 401 and oxygen delivery pipes 402 that match the number of oxygen injection pipes 401, and each oxygen delivery pipe 402 is independently equipped with a throttle valve. Example 17

[0080] Example 16 is repeated, except that the structure of the second oxygen injection tube group 6 is the same as that of the first oxygen injection tube group 4. Example 18

[0081] The same applies to Embodiment 17, except that the data processing system 8 is a computer data processing terminal.

[0082] When the low-carbon sintering device described in this utility model is used to sinter the sintering mixture, if the sintering data acquisition system 7 is a sintering mixture composition detection system, the particle size, iron content and moisture content of the sintering mixture are first sampled and detected, and the detected data are transmitted to the data processing system 8 for processing. Then, the sintering mixture is laid into the trolley of the sintering machine 1 by the material distributor 2. Then, according to the data processing results, the first ignition furnace 3, the first oxygen injection pipe group 4, the second ignition furnace 5 and the second oxygen injection pipe group 6 are selectively started to sinter the sintering mixture.

[0083] If the sintering real-time data acquisition system 7 is a sintering material surface recognition system, the sintering mixture is first laid into the trolley of the sintering machine 1 by the material distributor 2, and the first ignition furnace 3 is started to participate in the sintering process. Then, the sintering material surface recognition system performs video detection on the sintering material surface after the first ignition and sintering to obtain data such as the reflectivity, color, and cracks of the material surface, and sends the detected data to the data processing system 8 for processing. Then, based on the data processing results, the first oxygen injection pipe group 4, the second ignition furnace 5, and the second oxygen injection pipe group 6 are selectively started to sinter the sintering mixture.

[0084] If the sintering data acquisition system 7 is a tail section recognition system, the sintering mixture is first laid into the trolley of the sintering machine 1 by the material distributor 2, and the first ignition furnace 3 is started to participate in the sintering process. Then, the tail section recognition system performs video detection on the sintering material cross section at the tail of the sintering machine 1 to obtain data such as the brightness, color, continuity, thickness and height of the red layer of the cross section. The detected data is then sent to the data processing system 8 for processing. Based on the data processing results, the first oxygen injection pipe group 4, the second ignition furnace 5 and the second oxygen injection pipe group 6 are selectively started to sinter the sintering mixture.

[0085] If the sintering data acquisition system 7 is a flue gas oxygen content detector, the sintering mixture is first laid into the trolley of the sintering machine 1 by the material distributor 2, and the first ignition furnace 3 is started to participate in the sintering process. Then, the flue gas oxygen content detector transmits the oxygen content data of several air boxes located at the head of the sintering machine 1 to the data processing system 8 for processing. Then, based on the data processing results, the first oxygen injection pipe group 4, the second ignition furnace 5 and the second oxygen injection pipe group 6 are selectively started to sinter the sintering mixture.

[0086] When the first ignition furnace 3 and the second ignition furnace 5 are ignited, the two telescopic rods 902 located on both sides of the fixed plate 901 alternately rise and fall, causing the fixed plate 901 to tilt periodically back and forth. This causes the burner 302 to swing back and forth within the burner through-hole 303. During the swinging of the burner 302, the sprayed flame sweeps back and forth on the sintering material surface, thereby improving the uniformity of heating during ignition. At the same time, since the sintering material moves at a uniform speed, the horizontal distance between the first ignition furnace 3 and the second ignition furnace 5 can be adjusted by using the upright rod 10 and the moving wheel 1001, thereby adjusting the time interval between the ignition of the two furnaces. The first oxygen injection pipe group 4 and the second oxygen injection pipe group 6 are both composed of oxygen injection pipes 401 and oxygen delivery pipes 402. The oxygen injection volume of each oxygen injection pipe 401 can be precisely adjusted by the throttle valve installed on the oxygen delivery pipe 402. It should be noted that the ignition duration and ignition time interval of the first ignition furnace 3 and the second ignition furnace 5, as well as the oxygen injection volume per unit time of the first oxygen injection pipe group 4 and the second oxygen injection pipe group 6, can be adjusted in real time according to the processing results fed back by the data processing system 8, thereby ensuring the stability of the device operation.

Claims

1. A low-carbon sintering device, the device comprising a sintering machine (1) and a distributor (2) arranged at the machine head of the sintering machine (1), characterized in that: Along the direction from the head to the tail of the sintering machine (1), the sintering machine (1) is also provided with a first ignition furnace (3), a first oxygen injection pipe group (4), a second ignition furnace (5) and a second oxygen injection pipe group (6) in sequence. The device also includes a sintering real-time data acquisition system (7) and a data processing system (8); the sintering real-time data acquisition system (7) is installed on the sintering machine (1) or located next to the sintering machine (1), and the data processing system (8) is installed next to the sintering machine (1) and associated with the sintering real-time data acquisition system (7).

2. The apparatus of claim 1, wherein: The sintering real-time data acquisition system (7) is a sintering mixture composition detection system. The sintering mixture composition detection system is set on one side of the feeder (2) and connected to the feeder (2) through a sampling mechanism. The sintering mixture composition detection system is connected to the data processing system (8) through a data transmission line.

3. The apparatus of claim 2, wherein: The sampling mechanism is a sampling tube or a sampling mechanical shovel.

4. The apparatus of claim 2, wherein: The sintering mixture composition detection system includes a particle size analyzer, an iron content analyzer, and a moisture content analyzer.

5. The apparatus of claim 1, wherein: The sintering real-time data acquisition system (7) is a sintering material surface identification system. The sintering material surface identification system is installed on the hood of the sintering machine (1) located between the first ignition furnace (3) and the first oxygen injection pipe group (4). The sintering material surface identification system is connected to the data processing system (8) through a data transmission line.

6. The apparatus of claim 5, wherein: The sintering material surface recognition system includes a material surface reflectivity recognition camera, a material surface color recognition camera, and a material surface crack recognition camera.

7. The apparatus of claim 1, wherein: The sintering real-time data acquisition system (7) is a tail section identification system. The tail section identification system is set on the downstream side of the tail of the sintering machine (1) through a bracket. The tail section identification system is connected to the data processing system (8) through a data transmission line.

8. The apparatus of claim 7, wherein: The tail section recognition system includes a section red layer brightness recognition camera, a section red layer color recognition camera, a section red layer continuity recognition camera, a section red layer thickness recognition camera, and a section red layer height recognition camera.

9. The apparatus of claim 1, wherein: The sintering real-time data acquisition system (7) consists of several flue gas oxygen content detectors, which are respectively installed in several air boxes at the bottom of the sintering machine (1); all flue gas oxygen content detectors are connected to the data processing system (8) through data transmission lines.

10. The apparatus of any one of claims 1-9, wherein: The first ignition furnace (3) includes a furnace body (301) and a burner (302); the furnace body (301) is set on the fume hood of the sintering machine (1), and a through burner through hole (303) with a narrow top and wide bottom is opened on the top of the furnace body (301). The bottom end of the burner through hole (303) is connected to the inner cavity of the fume hood of the sintering machine (1); the upper part of the burner (302) is connected to the top of the furnace body (301) through the angle adjustment mechanism (9), and the lower end of the burner (302) extends into the burner through hole (303) and extends to the bottom end of the burner through hole (303); the tilt angle of the burner (302) in the vertical plane is adjusted by the angle adjustment mechanism (9).

11. The apparatus of claim 10, wherein: Multiple burners (302) are evenly arranged on the furnace body (301) of the first ignition furnace (3).

12. The apparatus of claim 10, wherein: The angle adjustment mechanism (9) includes a fixed plate (901) and a telescopic rod (902); the fixed plate (901) is sleeved on the upper part of the burner (302); the bottom surface of the fixed plate (901) is connected to the top surface of the furnace body (301) through at least two telescopic rods (902), and the fixed plate (901) and the telescopic rods (902) are hinged; by adjusting the height of the two telescopic rods (902) in the vertical direction, the tilt angle of the fixed plate (901) relative to the horizontal plane is adjusted, thereby adjusting the tilt angle of the burner (302) in the vertical plane.

13. The apparatus of claim 12, wherein: The telescopic rod (902) includes a drive motor, a cylinder and a piston rod. The cylinder is located on the top surface of the furnace body (301), the drive motor is located on one side of the cylinder and connected to the cylinder, the bottom end of the piston rod is connected to the cylinder, and its top end is hinged to the bottom surface of the fixing plate (901).

14. The apparatus of claim 10, wherein: The first ignition furnace (3) is also mounted above the hood of the sintering machine (1) by means of a support rod (10). The bottom end of the support rod (10) is connected to the frame of the sintering machine (1) or to the ground by means of a moving wheel (1001). In the horizontal direction of the sintering material running, the horizontal position of the first ignition furnace (3) on the hood of the sintering machine (1) is adjusted by the support rod (10) and the moving wheel (1001). The structure of the second ignition furnace (5) is the same as that of the first ignition furnace (3).

15. The apparatus of any one of claims 1-9, wherein: The first oxygen injection pipe group (4) includes an oxygen injection pipe (401) and an oxygen delivery pipe (402); the air inlet end of the oxygen injection pipe (401) is connected to the oxygen delivery pipe (402), and its air jet end passes through the fume hood of the sintering machine (1) and is connected to the inner cavity of the fume hood.

16. The apparatus of claim 10, wherein: The first oxygen injection pipe group (4) includes an oxygen injection pipe (401) and an oxygen delivery pipe (402); the air inlet end of the oxygen injection pipe (401) is connected to the oxygen delivery pipe (402), and its air jet end passes through the fume hood of the sintering machine (1) and is connected to the inner cavity of the fume hood.

17. The apparatus of claim 15, wherein: The first oxygen injection pipe group (4) includes multiple oxygen injection pipes (401) and oxygen delivery pipes (402) matching the number of oxygen injection pipes (401). Each oxygen delivery pipe (402) is independently equipped with a throttle valve.

18. The apparatus of claim 16, wherein: The first oxygen injection pipe group (4) includes multiple oxygen injection pipes (401) and oxygen delivery pipes (402) matching the number of oxygen injection pipes (401). Each oxygen delivery pipe (402) is independently equipped with a throttle valve.

19. The apparatus of claim 17, wherein: The structure of the second oxygen injection tube group (6) is the same as that of the first oxygen injection tube group (4).

20. The apparatus of claim 18, wherein: The structure of the second oxygen injection tube group (6) is the same as that of the first oxygen injection tube group (4).

21. The apparatus of any one of claims 1-9, wherein: The data processing system (8) is a computer data processing terminal.

22. The apparatus of claim 10, wherein: The data processing system (8) is a computer data processing terminal.

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