Process and device for drying lump ore through sintering machine

Abstract

The invention relates to the technical field of ferrous metallurgy sintering, in particular to a process and device for drying lump ore through a sintering machine. The device comprises a sintering machine body, a first driving motor is fixedly connected to one side of the sintering machine body, and a pair of first rotating shafts are movably connected to the interior of the sintering machine body; according to the sintering machine, through the arrangement of the feeding fan-shaped mechanisms, an air pump drives an air rod to stretch out and draw back, a second movable block drives a fixed shaft to rotate, and a meshing gear ensures that two pairs of fan-shaped gates are synchronously opened and closed; the mixing and discharging speed is accurately controlled, the running speed of a sintering machine trolley is matched, the mixing materials are evenly and flatly laid, bedding materials with the stable thickness are formed, the fixed shaft synchronously drives the rotating rod to rotate, the scraping plate scrapes and removes bonded materials along the inner wall of the feeding chute box in real time, and the chute is prevented from being blocked.

Description

Technical Field

[0001] This invention relates to the field of sintering technology in iron and steel metallurgy, specifically to a process and apparatus for drying lump ore using a sintering machine. Background Technology

[0002] Natural lump ore is an important component of blast furnace feed, possessing advantages such as high iron content and low manufacturing cost. However, lump ore has a high moisture content. If it is directly fed into the blast furnace for smelting, the drying of moisture inside the furnace will consume additional energy, prolong smelting time, increase the blast furnace coke ratio, reduce the permeability of the feed layer, ultimately increase smelting costs, and affect furnace stability. Therefore, lump ore must be dried before entering the blast furnace. The mainstream lump ore drying process consists of three main stages: raw material pretreatment, drying operation, and finished product processing. The core equipment includes a cylindrical dryer, a hot blast stove, and a dust collector. The basic principle is as follows: low-temperature lump ore enters the cylindrical dryer through a conveyor, where it exchanges heat with the high-temperature air generated by the hot blast stove inside the cylinder. The moisture in the lump ore evaporates due to the heat, ultimately achieving dehydration and drying. The exhaust gas is purified by a dust collector, and after meeting various environmental protection requirements, it is directly discharged into the atmosphere.

[0003] In traditional production models, lump ore typically requires pretreatment using independent drying equipment (such as rotary dryers). This process not only consumes a significant amount of coal or electricity, but the dried ore also easily reabsorbs moisture from the air during transport to the sintering machine, leading to a decrease in drying efficiency and increased fuel consumption in subsequent sintering processes. Furthermore, the sintering machine generates a large amount of high-temperature flue gas during the sintering process. The substantial heat energy contained in this flue gas is often directly emitted through the chimney without effective recovery, resulting in a double waste of energy. Traditional sintering machines often use a single chute or simple feeding device for lump ore, which cannot achieve precise feeding control based on parameters such as the sintering machine's operating speed and material layer thickness. This leads to large fluctuations in the feeding rate. Additionally, the lack of an effective leveling and distribution mechanism during material distribution results in uneven distribution of the lump ore on the conveyor belt. Some areas have excessively thick material layers, leading to incomplete sintering, while others have excessively thin material layers, causing air leakage. Ultimately, this results in large fluctuations in sintered ore grade, a high return rate, and increased production costs. Summary of the Invention

[0004] The purpose of this invention is to provide a process and apparatus for drying lump ore using a sintering machine. The design integrates lump ore waste heat drying, precise feeding, uniform material distribution, coordinated conveying, and efficient dust removal. By organically integrating the lump ore drying process with the main body of the sintering machine, the waste heat resources of the sintering machine itself are used to complete the lump ore drying. At the same time, the structural design and process parameters of key links such as feeding, material distribution, and conveying are optimized to achieve coordinated linkage and precise control of each process. Ultimately, the goal is to reduce energy consumption, improve sintering quality, reduce environmental emissions, and reduce operation and maintenance costs.

[0005] To achieve the above effects, the technical solution adopted by the present invention is as follows: In a first aspect, the present invention provides an apparatus for drying lump ore using a sintering machine, comprising: a sintering machine body, a first drive motor fixedly connected to one side of the sintering machine body, a pair of first rotating shafts movably connected inside the sintering machine body, a first conveyor belt drivingly connected to the outer wall of the pair of first rotating shafts, a mixing material conveying mechanism and a bottom material laying mechanism provided on the upper surface of the sintering machine body, the mixing material conveying mechanism including a mixing hopper fixedly connected to the upper surface of the sintering machine body, a pair of second weighing sensors fixedly connected to the left and right sides of the mixing hopper, a fifth mounting frame fixedly connected to one side of the upper surface of the mixing hopper, a fifth drive motor fixedly connected to one side of the fifth mounting frame, a pair of fifth rotating shafts movably connected inside the fifth mounting frame, and a fifth conveyor belt drivingly connected to the outer wall of the pair of fifth rotating shafts; The bottom material laying mechanism includes a feeding hopper fixedly connected to the upper surface of the sintering machine body. A buffer chamber is fixedly connected to the upper surface of the feeding hopper. A first mounting frame is fixedly connected to one side of the upper surface of the buffer chamber. A second drive motor is fixedly connected to one side of the first mounting frame. A pair of second rotating shafts are movably connected inside the first mounting frame. A second transmission belt is drivenly connected to the outer wall of the pair of second rotating shafts. First weighing sensors are fixedly connected to the left and right sides of the buffer chamber.

[0006] Preferably, the output end of the first drive motor is connected to the output end of the first rotating shaft, the output end of the fifth mounting bracket is connected to the output end of the fifth rotating shaft, and the output end of the second drive motor is connected to the output end of the second rotating shaft.

[0007] Preferably, a sealing weighing mechanism is provided on the upper surface of the buffer silo. The sealing weighing mechanism includes a second mounting frame fixedly connected to the upper surface of the buffer silo, a third drive motor fixedly connected to one side of the second mounting frame, a pair of third rotating shafts movably connected inside the second mounting frame, a third transmission belt drivingly connected to the outer wall of the pair of third rotating shafts, a receiving trough fixedly connected to one side of the second mounting frame, and a radar level gauge fixedly connected to one side of the receiving trough.

[0008] Preferably, the output end of the third drive motor is connected to the output end of the third rotating shaft.

[0009] Preferably, a block ore transport mechanism is provided on one side of the receiving ore bin. The block ore transport mechanism includes a third mounting frame fixedly connected to one side of the receiving ore bin. A fourth drive motor is fixedly connected to one side of the third mounting frame. A pair of fourth rotating shafts are movably connected inside the third mounting frame. A fourth transmission belt is drivenly connected to the outer wall of the pair of fourth rotating shafts.

[0010] Preferably, the output end of the fourth drive motor is connected to the output end of the fourth rotating shaft.

[0011] Preferably, a support frame is fixedly connected inside the sintering machine body, and an igniter is fixedly connected to one side of the support frame.

[0012] Preferably, a dust removal and exhaust mechanism is provided on one side of the sintering machine body. The dust removal and exhaust mechanism includes an electrostatic precipitator fixedly connected to one side of the sintering machine body. A mounting plate is fixedly connected to one side of the sintering machine body. An exhaust fan is fixedly connected to the upper surface of the mounting plate. A mounting ring is fixedly connected to the upper surface of the exhaust fan. An exhaust pipe is fixedly connected to one side of the exhaust fan. A filter screen is fixedly connected inside the exhaust pipe. An exhaust pipe is fixedly connected to one side of the exhaust fan.

[0013] Preferably, the sintering machine body is provided with a feeding mechanism inside. The feeding mechanism includes a first servo motor fixedly connected to one side of the sintering machine body, a first rotating shaft fixedly connected to one side of the first servo motor, a circular roller feeder fixedly connected to one side of the first rotating shaft, a first pulley fixedly connected to the outer wall of the first rotating shaft, a connecting shaft fixedly connected inside the sintering machine body, a second pulley fixedly connected to the outer wall of the connecting shaft, a belt drivingly connected to the outer walls of the first pulley and the second pulley, a connecting rod fixedly connected to one side of the second pulley, a striking block fixedly connected to the outer wall of the connecting rod, a fixed frame fixedly connected inside the sintering machine body, and a nine-roller feeder fixedly connected inside the fixed frame.

[0014] Preferably, the sintering machine body is internally equipped with a feeding fan-shaped mechanism. The feeding fan-shaped mechanism includes a feeding chute box fixedly connected to the outer wall of the hopper. A pair of fixed shafts are movably connected to the left and right sides of the feeding chute box. Meshing gears are fixedly connected to the outer walls of the two pairs of fixed shafts. A pair of fan-shaped gates are fixedly connected to the outer walls of the two pairs of fixed shafts. A connecting frame is fixedly connected to one side of the feeding chute box. A fixed rod is fixedly connected to one side of the connecting frame. A first movable block is fixedly connected to one side of the fixed rod. An air pump is fixedly connected to one side of the first movable block. An air rod is fixedly connected to one side of the air pump. A second movable block is fixedly connected to one side of the fan-shaped gates. A rotating rod is fixedly connected to one side of the fixed shaft. A connecting plate is fixedly connected to one side of the rotating rod. A scraper is fixedly connected to the outer wall of the connecting plate.

[0015] Preferably, the two pairs of meshing gears are meshed together, the rotating rod is positioned inside the feed chute, and the output end of the pneumatic rod is connected to the second movable block.

[0016] Secondly, the present invention provides a process for drying lump ore using a sintering machine, comprising the following steps: Step 1: The lump ore is transported by the fourth conveyor belt of the lump ore transport mechanism to the receiving trough of the sealed weighing mechanism for temporary storage. The radar level gauge monitors the material quantity in real time and is interlocked with the fourth drive motor and the third drive motor. When the material level reaches the upper limit, the fourth drive motor stops and when the material level reaches the lower limit, the fourth drive motor restarts to ensure that the receiving trough is not full or empty and the material flow is stable. Step 2: According to production needs, open the discharge gate of the receiving ore bin. The lump ore is sent to the second conveyor belt of the bottom material laying mechanism via the third conveyor belt. After being mixed with the bottom material, it is sent to the buffer bin to form a mixing bin. The first weighing sensor monitors the material quantity in the buffer bin and is interlocked with the second drive motor. When the material quantity is higher than the upper limit, the second drive motor stops. When the material quantity is lower than the lower limit, the second drive motor starts to ensure that the material quantity in the buffer bin meets the production requirements. Step 3: The mixed material in the buffer bin flows into the discharge hopper through the feeding chute. The air pump drives the air rod to extend and retract, which drives the fixed shaft to rotate through the second movable block. The meshing gear synchronously drives a pair of fan-shaped gates to adjust the opening, so that the mixed material is evenly spread on the first conveyor belt to form the base material. The sintering mixture is sent to the mixing bin through the fifth conveyor belt. The second weighing sensor monitors the material quantity and is interlocked with the fifth drive motor and the first servo motor. When the material quantity is abnormal, the fifth drive motor starts and stops to replenish the material, and the first servo motor adjusts the speed of the roller feeder. The mixture is evenly spread on the base material by the nine-roller distributor to form a layered material layer. Step 4: The layered material moves to the igniter along the first conveyor belt. The fuel is ignited to start the sintering reaction. The high-temperature flue gas generated by sintering penetrates the bottom material and exchanges heat with the lump ore. The moisture in the lump ore evaporates into water vapor, which enters the electrostatic precipitator for dust removal along with the flue gas. It is then extracted by the exhaust fan and sent to the desulfurization and denitrification system for purification before being discharged. The dried lump ore is unloaded with the sintering cake to the tail of the sintering machine and sent to the ring cooler. Step 5: When the feeding fan-shaped mechanism is working, the fixed shaft drives the rotating rod to rotate, and the scraper slides along the inner wall of the feeding chute box to remove the adhering material. When the feeding mechanism is working, the first rotating shaft drives the first pulley to rotate, and drives the second pulley and connecting rod to rotate through the belt. The striking block periodically strikes the fixed frame to prevent the nine-roller feeder from clogging.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows: By incorporating a lump ore transport mechanism, the fourth drive motor allows for flexible adjustment of the conveying speed, precisely delivering the lump ore to the receiving trough for temporary storage, preventing interruptions or accumulation. Secondly, the lump ore transport mechanism, the sealed weighing mechanism, and the bottom material laying mechanism work together to transport the lump ore to the buffer tank for mixing. The sealed weighing mechanism provides temporary storage and buffering for the lump ore in the receiving trough. A radar level gauge accurately collects level data in real time, forming an interlocking control system with the fourth drive motor of the lump ore transport mechanism and its own third drive motor, ensuring the receiving trough is neither fully full nor empty. Furthermore, the third conveyor belt ensures quantitative delivery of the lump ore, providing a stable flow for mixing and preventing fluctuations in material quantity from affecting the uniformity of subsequent material distribution. The bottom material laying mechanism, via a second conveyor belt, smoothly delivers the mixed lump ore and bottom material to the buffer tank to form a mixed material. The first weighing sensor provides a sufficient and stable source of mixed material for the continuous and uniform distribution of the sintering machine trolley, preventing interruptions in material distribution or accumulation due to insufficient or excessive mixing.

[0018] By setting up a feeding fan-shaped mechanism, the air pump drives the air rod to extend and retract, which in turn drives the fixed shaft to rotate through the second movable block. The meshing gears ensure that the two pairs of fan-shaped gates open and close synchronously, precisely controlling the mixing and feeding rate to match the speed of the sintering machine trolley. This achieves uniform and even spreading of the mixed material to form a stable base material. The fixed shaft synchronously drives the rotating rod to rotate, and the scraper scrapes along the inner wall of the feeding chute in real time to remove adhering materials and prevent chute blockage. Through the feeding mechanism, the first servo motor drives the round roller feeder to rotate, and the round roller feeder rotates counterclockwise, thereby driving the material inside the mixing bin to be fed onto the nine-roller distributor. Moreover, the first pulley drives the second pulley to rotate through the belt, and the striking block at the end of the connecting rod periodically strikes the fixed frame to use vibration to remove the adhering materials on the surface of the nine-roller distributor, avoiding uneven material layer thickness caused by material accumulation and ensuring stable sintering quality.

[0019] Through the setting of the mixing material conveying mechanism, the fifth conveyor belt efficiently delivers the sintering mixture to the mixing silo for temporary storage. The second weighing sensor monitors the material quantity in real time and is interlocked with the fifth drive motor and the first servo motor of the feeding mechanism. When the material quantity reaches the upper limit, feeding stops, and when it reaches the lower limit, replenishment is started. At the same time, the rotation speed of the roller feeder is adjusted to ensure that the supply of the mixture is precisely matched with the sintering demand, avoiding the over-accumulation of the mixture or the interruption of production due to insufficient supply. Through the setting of the dust removal and exhaust mechanism, the electrostatic precipitator efficiently removes fine dust. The purified flue gas is sent to the desulfurization and denitrification system through the exhaust pipe, ultimately achieving the discharge of dust concentration. Moreover, the exhaust pipe of the exhaust fan is equipped with a filter screen to prevent dust from damaging the exhaust fan. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the main structure of an embodiment of the present invention; Figure 2 This is a schematic diagram of the block ore transportation mechanism structure according to an embodiment of the present invention; Figure 3 This is a schematic diagram of the internal structure of the main body of an embodiment of the present invention; Figure 4 This is a schematic diagram of the dust removal and exhaust mechanism structure according to an embodiment of the present invention; Figure 5 This is a schematic diagram of the feeding mechanism structure according to an embodiment of the present invention; Figure 6 This is a schematic diagram of the feeding sector mechanism structure according to an embodiment of the present invention.

[0022] In the diagram, 1. Sintering machine body; 2. First drive motor; 3. First rotating shaft; 4. First conveyor belt; 5. Feed hopper; 6. Buffer bin; 7. First mounting frame; 8. Second drive motor; 9. Second rotating shaft; 10. Second conveyor belt; 11. Second mounting frame; 12. Third drive motor; 13. Third rotating shaft; 14. Third conveyor belt; 15. Receiving trough; 16. Third mounting frame; 17. Fourth drive motor; 18. Fourth rotating shaft; 19. Fourth conveyor belt; 20. First weighing sensor; 21. Mixing bin; 22. Second weighing sensor; 23. Fifth mounting frame; 24. Fifth drive motor; 25. Fifth rotating shaft; 26. Fifth conveyor belt; 27. Electrostatic precipitator; 28. Mounting device. 29. Plate; 30. Support frame; 31. Ignition device; 32. Exhaust fan; 33. Mounting ring; 34. Exhaust pipe; 35. Filter screen; 36. Exhaust pipe; 37. First servo motor; 38. First rotating shaft; 39. Circular roller feeder; 40. First pulley; 41. Connecting shaft; 42. Second pulley; 43. Belt; 44. Connecting rod; 45. Striking block; 46. Fixed frame; 47. Nine-roller distributor; 48. Feed chute box; 49. Fixed shaft; 50. Meshing gear; 51. Sector gate; 52. Connecting frame; 53. Fixed rod; 54. First movable block; 55. Air pump; 56. Air rod; 57. Second movable block; 58. Rotating rod; 59. Connecting plate; 60. Scraper; 51. Radar level gauge. Detailed Implementation

[0023] The technical solution of the present invention will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0024] Please see Figures 1 to 6 As shown, this embodiment discloses an apparatus for drying lump ore using a sintering machine, comprising: a sintering machine body 1, a first drive motor 2 fixedly connected to one side of the sintering machine body 1, a pair of first rotating shafts 3 movably connected inside the sintering machine body 1, a first conveyor belt 4 drivingly connected to the outer wall of the pair of first rotating shafts 3, a support frame 29 fixedly connected inside the sintering machine body 1, an igniter 30 fixedly connected to one side of the support frame 29, and a mixing material conveying mechanism and a bottom material laying mechanism provided on the upper surface of the sintering machine body 1. The mixing material conveying mechanism includes a mixing hopper 21, a second weighing sensor 22, a fifth mounting frame 23, a fifth drive motor 24, and a fifth rotating shaft 3. The sintering machine body 1 is fixedly connected to a mixing hopper 21 on the upper surface of the sintering machine body 1. A pair of second weighing sensors 22 are fixedly connected to the left and right sides of the mixing hopper 21. A fifth mounting bracket 23 is fixedly connected to one side of the upper surface of the mixing hopper 21. A fifth drive motor 24 is fixedly connected to one side of the fifth mounting bracket 23. A pair of fifth rotating shafts 25 are movably connected inside the fifth mounting bracket 23. A fifth conveyor belt 26 is driven to the outer wall of the pair of fifth rotating shafts 25. The output end of the first drive motor 2 is connected to the output end of the first rotating shaft 3. The output end of the fifth mounting bracket 23 is connected to the output end of the fifth rotating shaft 25. The fifth drive motor 24 drives the fifth rotating shaft 25 to rotate. The fifth rotating shaft 25 rotates synchronously, driving the fifth transmission belt 26 connected to the outer wall to operate. The sintering mixture is continuously transported by the fifth transmission belt 26 and finally sent into the mixing bin 21 fixed on the upper surface of the sintering machine body 1 for temporary storage. The second weighing sensor 22 fixed on the left and right sides of the mixing bin 21 adopts the strain gauge force measurement principle to continuously collect the overall weight data of the mixing bin 21.

[0025] The base material laying mechanism includes a feeding hopper 5, a buffer chamber 6, a first mounting frame 7, a second drive motor 8, a second rotating shaft 9, a second conveyor belt 10, and a first weighing sensor 20. The feeding hopper 5 is fixedly connected to the upper surface of the sintering machine body 1. The buffer chamber 6 is fixedly connected to the upper surface of the feeding hopper 5. The first mounting frame 7 is fixedly connected to one side of the upper surface of the buffer chamber 6. The second drive motor 8 is fixedly connected to one side of the first mounting frame 7. A pair of second rotating shafts 9 are movably connected inside the first mounting frame 7. The second conveyor belt 10 is drivenly connected to the outer wall of the pair of second rotating shafts 9. The first weighing sensor 20 is fixedly connected to the left and right sides of the buffer chamber 6. The output end of the second drive motor 8 is connected to the output end of the second rotating shaft 9. The second drive motor 8 drives the second rotating shaft 9 to rotate. The second rotating shaft 9 rotates synchronously, driving the second transmission belt 10 connected to the outer wall to operate, continuously transporting the ore and bottom material from the previous process to the buffer bin 6 for temporary storage. The first weighing sensor 20 fixed on the left and right sides of the buffer bin 6 adopts the strain gauge force measurement principle to continuously collect the overall weight data of the mixing bin 21.

[0026] A sealing weighing mechanism is provided on the upper surface of the buffer bin 6. The sealing weighing mechanism includes a second mounting frame 11, a third drive motor 12, a third rotating shaft 13, a third conveyor belt 14, a receiving trough 15, and a radar level gauge 60. The second mounting frame 11 is fixedly connected to the upper surface of the buffer bin 6. The third drive motor 12 is fixedly connected to one side of the second mounting frame 11. A pair of third rotating shafts 13 are movably connected inside the second mounting frame 11. The third conveyor belt 14 is drivenly connected to the outer wall of the pair of third rotating shafts 13. The receiving trough 15 is fixedly connected to one side of the second mounting frame 11. The radar level gauge 60 is fixedly connected to one side of the receiving trough 15. The output end of the third drive motor 12 is connected to the output end of the third rotating shaft 13. The third drive motor 12 drives the third rotating shaft 13 to rotate, and the third rotating shaft 13 rotates synchronously, driving the third transmission belt 14 connected to the outer wall to operate. The lump ore is first sent into the receiving trough 15 fixedly connected to one side of the second mounting frame 11 for temporary storage. The receiving trough 15 serves to buffer the material flow and prevent the lump ore from directly impacting the transmission belt, ensuring the stability of subsequent conveying. Moreover, the radar level gauge 60 fixed on one side of the receiving trough 15 emits high-frequency electromagnetic waves and receives the reflected waves from the surface of the lump ore. It uses the time difference method to calculate the material level height in the receiving trough 15 and obtain the inventory data of the lump ore in the bin in real time.

[0027] A block ore transport mechanism is provided on one side of the receiving ore bin 15. The block ore transport mechanism includes a third mounting frame 16, a fourth drive motor 17, a fourth rotating shaft 18, and a fourth conveyor belt 19. The third mounting frame 16 is fixedly connected to one side of the receiving ore bin 15. The fourth drive motor 17 is fixedly connected to one side of the third mounting frame 16. A pair of fourth rotating shafts 18 are movably connected inside the third mounting frame 16. The fourth conveyor belt 19 is drivenly connected to the outer wall of the pair of fourth rotating shafts 18. The output end of the fourth drive motor 17 is connected to the output end of the fourth rotating shaft 18. The fourth drive motor 17 drives the fourth rotating shaft 18 to rotate. The fourth rotating shaft 18 rotates synchronously under the drive of the motor, which drives the fourth transmission belt 19 connected to the outer wall to operate, so that the fourth transmission belt 19 transports the ore block to the receiving trough 15.

[0028] A dust removal and exhaust mechanism is provided on one side of the sintering machine body 1. The dust removal and exhaust mechanism includes an electrostatic precipitator 27, a mounting plate 28, an exhaust fan 31, a mounting ring 32, an exhaust pipe 33, a filter screen 34, and an exhaust pipe 35. An electrostatic precipitator 27 is fixedly connected to one side of the sintering machine body 1. An installation plate 28 is fixedly connected to one side of the sintering machine body 1. An exhaust fan 31 is fixedly connected to the upper surface of the installation plate 28. An installation ring 32 is fixedly connected to the upper surface of the exhaust fan 31. An exhaust pipe 33 is fixedly connected to one side of the exhaust fan 31. A filter screen 34 is fixedly connected inside the exhaust pipe 33. An exhaust pipe 35 is fixedly connected to one side of the exhaust fan 31. The exhaust fan 31 is fixed to one side of the sintering machine body 1 by the mounting plate 28. The mounting plate 28 provides stable support to prevent the exhaust fan 31 from shifting due to vibration during operation. When the exhaust fan 31 is started, the impeller inside the fan rotates at high speed, creating a negative pressure environment inside the exhaust pipe 33 and the sintering machine body 1. The dust-laden flue gas generated by the sintering reaction inside the sintering machine body 1 is drawn into the dust removal and exhaust system through the exhaust pipe 33 under the action of negative pressure. The filter screen 34 fixed inside the exhaust pipe 33 first pre-treats the flue gas. The pre-filtered flue gas enters the electrostatic precipitator 27 directly connected to the sintering machine body 1. The qualified flue gas after fine purification by the electrostatic precipitator 27 is discharged directionally through the exhaust pipe 35 connected to the other side of the exhaust fan 31 under the continuous negative pressure drive.

[0029] The sintering machine body 1 is internally equipped with a feeding mechanism, which includes a first servo motor 36, a first rotating shaft 37, a roller feeder 38, a first pulley 39, a connecting shaft 40, a second pulley 41, a belt 42, a connecting rod 43, a striking block 44, a fixing frame 45, and a nine-roller feeder 46. The first servo motor 36 is fixedly connected to one side of the sintering machine body 1, the first rotating shaft 37 is fixedly connected to one side of the first servo motor 36, and the roller feeder 38 is fixedly connected to one side of the first rotating shaft 37. A first pulley 39 is fixedly connected to the outer wall of the rotating shaft 37. A connecting shaft 40 is fixedly connected to the inside of the sintering machine body 1. A second pulley 41 is fixedly connected to the outer wall of the connecting shaft 40. A belt 42 is connected to the outer walls of the first pulley 39 and the second pulley 41. A connecting rod 43 is fixedly connected to one side of the second pulley 41. A striking block 44 is fixedly connected to the outer wall of the connecting rod 43. A fixing frame 45 is fixedly connected to the inside of the sintering machine body 1. A nine-roller feeder 46 is fixedly connected to the inside of the fixing frame 45. The first servo motor 36 drives the first rotating shaft 37, and the first pulley 39 fixed on the outer wall of the first rotating shaft 37 rotates accordingly. Through the belt 42 connected to the outer wall, the power is transmitted to the second pulley 41 on the outer wall of the connecting shaft 40 inside the sintering machine body 1. When the second pulley 41 rotates, it drives the connecting rod 43 and the striking block 44 fixed on one side to make a circular motion synchronously. As the first rotating shaft 37 rotates, the roller body of the round roller feeder 38 begins to rotate. The higher the speed, the more mixed material is carried out in the gap between the roller body and the shell, and the larger the feeding amount. Conversely, the lower the speed, the smaller the feeding amount. Moreover, the mixed material fed by the round roller feeder 38 falls directly into the nine-roller distributor 46. When the second pulley 41 drives the connecting rod 43 and the striking block 44 to make a circular motion, the striking block 44 strikes the fixed frame 45 and the side wall of the nine-roller distributor 46 at a fixed frequency, and uses the striking power to clean the residual material from the nine-roller distributor 46.

[0030] The sintering machine body 1 is internally equipped with a feeding fan-shaped mechanism, which includes a feeding chute 47, fixed shafts 48, meshing gears 49, a fan-shaped gate 50, a connecting frame 51, a fixed rod 52, a first movable block 53, an air pump 54, an air rod 55, a second movable block 56, a rotating rod 57, a connecting plate 58, and a scraper 59. The feeding chute 47 is fixedly connected to the outer wall of the hopper 5. A pair of fixed shafts 48 are movably connected to the left and right sides of the feeding chute 47. Meshing gears 49 are fixedly connected to the outer walls of the two pairs of fixed shafts 48. A pair of fan-shaped gates 50 are fixedly connected to the outer walls of the two pairs of fixed shafts 48. A connecting plate 50 is fixedly connected to one side of the feeding chute 47. A connecting frame 51 is fixedly connected to one side of a fixed rod 52. A first movable block 53 is fixedly connected to one side of the fixed rod 52. An air pump 54 is fixedly connected to one side of the first movable block 53. An air rod 55 is fixedly connected to one side of the air pump 54. A second movable block 56 is fixedly connected to one side of a fan-shaped gate 50. A rotating rod 57 is fixedly connected to one side of a fixed shaft 48. A connecting plate 58 is fixedly connected to one side of the rotating rod 57. A scraper 59 is fixedly connected to the outer wall of the connecting plate 58. Two pairs of meshing gears 49 are meshed with each other. The rotating rod 57 is located inside the feeding chute box 47. The output end of the air rod 55 is connected to the second movable block 56.

[0031] The air pump 54 drives the air rod 55 to extend and retract. The output end of the air rod 55 is connected to the second movable block 56 on one side of the fan-shaped gate 50. When the air rod 55 extends and retracts, it drives the second movable block 56 to move synchronously, pushing the fan-shaped gate 50 to rotate around the fixed shaft 48. The outer wall of the fixed shaft 48 is fixed with meshing gears 49, and the two pairs of meshing gears 49 mesh with each other. When one of the fixed shafts 48 rotates with the fan-shaped gate 50, the meshing gear 49 drives the other fixed shaft 48 to rotate synchronously in the opposite direction, ensuring that the two fan-shaped gates 50 always maintain symmetrical opening and closing. One side of the fixed shaft 48 extends into the inside of the feeding chute box 47 and is fixedly connected to the rotating rod 57. When the fixed shaft 48 rotates with the fan-shaped gate 50, the rotating rod 57 rotates synchronously, driving the scraper 59 fixed at its end through the connecting plate 58 to slide along the inner wall of the chute box.

[0032] When in use, this invention includes: Step 1: The lump ore is sent to the receiving trough 15 of the sealed weighing mechanism by the fourth conveyor belt 19 of the lump ore transport mechanism for temporary storage. The radar level gauge 60 monitors the material quantity in real time and is interlocked with the fourth drive motor 17 and the third drive motor 12. When the material level reaches the upper limit, the fourth drive motor 17 stops and when the material level reaches the lower limit, the fourth drive motor 17 restarts to ensure that the receiving trough 15 is not full or empty and the material flow is stable. Step 2: According to production needs, open the discharge gate of the receiving ore bin 15. The lump ore is sent to the second conveyor belt 10 of the bottom material laying mechanism via the third conveyor belt 14. After being mixed with the bottom material, it is sent to the buffer bin 6 to form a mixing material. The first weighing sensor 20 monitors the material quantity in the buffer bin 6 and is interlocked with the second drive motor 8. When the material quantity is higher than the upper limit, the second drive motor 8 stops. When the material quantity is lower than the lower limit, the second drive motor 8 starts to ensure that the material quantity in the buffer bin 6 meets the production requirements. Step 3: The mixed material in the buffer bin 6 flows into the discharge hopper 5 through the feeding chute box 47. The air pump 54 drives the air rod 55 to extend and retract, which drives the fixed shaft 48 to rotate through the second movable block 56. The meshing gear 49 synchronously drives a pair of fan-shaped gates 50 to adjust the opening, so that the mixed material is evenly spread on the first conveyor belt 4 to form the base material. The sintering mixture is sent to the mixing bin 21 through the fifth conveyor belt 26. The second weighing sensor 22 monitors the material quantity and is interlocked with the fifth drive motor 24 and the first servo motor 36. When the material quantity is abnormal, the fifth drive motor 24 starts and stops to replenish the material, and the first servo motor 36 adjusts the speed of the round roller feeder 38. The mixture is evenly spread on the base material by the nine-roller spreader 46 to form a layered material layer. Step 4: The layered material layer moves with the first conveyor belt 4 to the igniter 30, where the fuel is ignited to start the sintering reaction. The high-temperature flue gas generated by sintering penetrates the bottom material and exchanges heat with the lump ore. The moisture in the lump ore evaporates into water vapor, which enters the electrostatic precipitator 27 for dust removal along with the flue gas. It is then extracted by the exhaust fan 31 and sent to the desulfurization and denitrification system through the exhaust pipe 35 for purification before being discharged. The dried lump ore is unloaded with the sintering cake to the tail end of the sintering machine and sent to the ring cooler. Step 5: When the feeding fan-shaped mechanism is working, the fixed shaft 48 drives the rotating rod 57 to rotate, and the scraper 59 slides along the inner wall of the feeding chute box 47 to remove the adhering material. When the feeding mechanism is working, the first rotating shaft 37 drives the first pulley 39 to rotate, and drives the second pulley 41 and the connecting rod 43 to rotate through the belt 42. The striking block 44 periodically strikes the fixed frame 45 to prevent the nine-roller distributor 46 from blocking the material.

[0033] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0034] This invention is not limited to the optional embodiments described above, and anyone can derive other various forms of products based on the inspiration of this invention. The specific embodiments described above should not be construed as limiting the scope of protection of this invention; the scope of protection of this invention should be determined by the claims, and the specification can be used to interpret the claims.

Claims

1. An apparatus for drying lump ore using a sintering machine, comprising: The sintering machine body (1) has a first drive motor (2) fixedly connected to one side of the sintering machine body (1), a pair of first rotating shafts (3) movably connected inside the sintering machine body (1), a first transmission belt (4) drivingly connected to the outer wall of the pair of first rotating shafts (3), a support frame (29) fixedly connected inside the sintering machine body (1), and an igniter (30) fixedly connected to one side of the support frame (29). The sintering machine body (1) is characterized in that a feeding mechanism and a mixing material conveying mechanism are provided on the upper surface of the sintering machine body (1). The feeding mechanism includes a first servo motor (36) fixedly connected to one side of the sintering machine body (1), a first rotating shaft (37) fixedly connected to one side of the first servo motor (36), a round roller feeder (38) fixedly connected to one side of the first rotating shaft (37), a first pulley (39) fixedly connected to the outer wall of the first rotating shaft (37), a connecting shaft (40) fixedly connected to the inside of the sintering machine body (1), a second pulley (41) fixedly connected to the outer wall of the connecting shaft (40), a belt (42) drivingly connected to the outer walls of the first pulley (39) and the second pulley (41), a connecting rod (43) fixedly connected to one side of the second pulley (41), a striking block (44) fixedly connected to the outer wall of the connecting rod (43), a fixed frame (45) fixedly connected to the inside of the sintering machine body (1), and a nine-roller feeder (46) fixedly connected to the inside of the fixed frame (45).

2. The apparatus for drying lump ore using a sintering machine according to claim 1, characterized in that: The output end of the first drive motor (2) is connected to the output end of the first rotating shaft (3); The mixing material conveying mechanism includes a mixing hopper (21) fixedly connected to the upper surface of the sintering machine body (1). A pair of second weighing sensors (22) are fixedly connected to the left and right sides of the mixing hopper (21). A fifth mounting frame (23) is fixedly connected to one side of the upper surface of the mixing hopper (21). A fifth drive motor (24) is fixedly connected to one side of the fifth mounting frame (23). A pair of fifth rotating shafts (25) are movably connected inside the fifth mounting frame (23). A fifth transmission belt (26) is drivenly connected to the outer wall of the pair of fifth rotating shafts (25). The output end of the fifth mounting frame (23) is connected to the output end of the fifth rotating shaft (25).

3. The apparatus for drying lump ore using a sintering machine according to claim 1, characterized in that: The upper surface of the sintering machine body (1) is provided with a bottom material laying mechanism. The bottom material laying mechanism includes a feeding hopper (5) fixedly connected to the upper surface of the sintering machine body (1). A buffer chamber (6) is fixedly connected to the upper surface of the feeding hopper (5). A first mounting frame (7) is fixedly connected to one side of the upper surface of the buffer chamber (6). A second drive motor (8) is fixedly connected to one side of the first mounting frame (7). A pair of second rotating shafts (9) are movably connected inside the first mounting frame (7). A second transmission belt (10) is drivenly connected to the outer wall of the pair of second rotating shafts (9). A first weighing sensor (20) is fixedly connected to the left and right sides of the buffer chamber (6).

4. The apparatus for drying lump ore using a sintering machine according to claim 3, characterized in that: The upper surface of the buffer chamber (6) is provided with a sealing weighing mechanism. The sealing weighing mechanism includes a second mounting frame (11) fixedly connected to the upper surface of the buffer chamber (6). A third drive motor (12) is fixedly connected to one side of the second mounting frame (11). A pair of third rotating shafts (13) are movably connected inside the second mounting frame (11). A third transmission belt (14) is drivenly connected to the outer wall of the pair of third rotating shafts (13). A receiving trough (15) is fixedly connected to one side of the second mounting frame (11). A radar level gauge (60) is fixedly connected to one side of the receiving trough (15).

5. The apparatus for drying lump ore using a sintering machine according to claim 4, characterized in that: A block ore transport mechanism is provided on one side of the receiving ore trough (15). The block ore transport mechanism includes a third mounting frame (16) fixedly connected to one side of the receiving ore trough (15). A fourth drive motor (17) is fixedly connected to one side of the third mounting frame (16). A pair of fourth rotating shafts (18) are movably connected inside the third mounting frame (16). A fourth transmission belt (19) is drivenly connected to the outer wall of the pair of fourth rotating shafts (18).

6. The apparatus for drying lump ore using a sintering machine according to claim 1, characterized in that: A dust removal and exhaust mechanism is provided on one side of the sintering machine body (1). The dust removal and exhaust mechanism includes an electrostatic precipitator (27) fixedly connected to one side of the sintering machine body (1). An installation plate (28) is fixedly connected to one side of the sintering machine body (1). An exhaust fan (31) is fixedly connected to the upper surface of the installation plate (28). An installation ring (32) is fixedly connected to the upper surface of the exhaust fan (31). An exhaust pipe (33) is fixedly connected to one side of the exhaust fan (31). A filter screen (34) is fixedly connected inside the exhaust pipe (33). An exhaust pipe (35) is fixedly connected to one side of the exhaust fan (31).

7. The apparatus for drying lump ore using a sintering machine according to claim 1, characterized in that: The sintering machine body (1) is equipped with a feeding fan-shaped mechanism inside. The feeding fan-shaped mechanism includes a feeding chute box (47) fixedly connected to the outer wall of the feeding hopper (5). A pair of fixed shafts (48) are movably connected to the left and right sides of the feeding chute box (47). Meshing gears (49) are fixedly connected to the outer walls of the two pairs of fixed shafts (48). A pair of fan-shaped gates (50) are fixedly connected to the outer walls of the two pairs of fixed shafts (48). A connecting frame (51) is fixedly connected to one side of the feeding chute box (47). A connecting frame (51) is fixedly connected to one side of the connecting frame (51). A fixed rod (52) is connected to a first movable block (53) fixedly connected to one side of the fixed rod (52), an air pump (54) fixedly connected to one side of the first movable block (53), an air rod (55) fixedly connected to one side of the air pump (54), a second movable block (56) fixedly connected to one side of the fan-shaped gate (50), a rotating rod (57) fixedly connected to one side of the fixed shaft (48), a connecting plate (58) fixedly connected to one side of the rotating rod (57), and a scraper (59) fixedly connected to the outer wall of the connecting plate (58).

8. The apparatus for drying lump ore using a sintering machine according to claim 7, characterized in that: The two pairs of meshing gears (49) are meshed together, the rotating rod (57) is located inside the feed chute box (47), and the output end of the air rod (55) is connected to the second movable block (56).

9. A process for drying lump ore using a sintering machine, characterized in that... An apparatus for drying lump ore using a sintering machine as described in any one of claims 1-8, comprising the following steps: Step 1: The lump ore is temporarily stored in the receiving trough (15) of the sealed weighing mechanism by the fourth conveyor belt (19) of the lump ore transport mechanism. The radar level gauge (60) monitors the material quantity in real time and is interlocked with the fourth drive motor (17) and the third drive motor (12). When the material level reaches the upper limit, the fourth drive motor (17) stops. When the material level reaches the lower limit, the fourth drive motor (17) restarts. Step 2: Open the feeding gate of the receiving ore trough (15), and the lump ore is sent to the second conveyor belt (10) of the bottom material laying mechanism via the third conveyor belt (14). After being mixed with the bottom material, it is sent to the buffer silo (6) to form a mixing material. The first weighing sensor (20) monitors the amount of material in the buffer silo (6) and is interlocked with the second drive motor (8). When the amount of material is higher than the upper limit, the second drive motor (8) stops. When the amount of material is lower than the lower limit, the second drive motor (8) starts. Step 3: The mixed material in the buffer bin (6) flows into the feed hopper (5) through the feed chute box (47). The air pump (54) drives the air rod (55) to extend and retract, and drives the fixed shaft (48) to rotate through the second movable block (56). The meshing gear (49) synchronously drives a pair of fan-shaped gates (50) to adjust the opening, so that the mixed material is evenly spread on the first conveyor belt (4) to form the base material. The sintered mixture is sent to the mixing bin (21) through the fifth conveyor belt (26). The second weighing sensor (22) monitors the material quantity and is interlocked with the fifth drive motor (24) and the first servo motor (36). When the material quantity is abnormal, the fifth drive motor (24) starts and stops to replenish the material, and the first servo motor (2) adjusts the speed of the round roller feeder (38). The mixture is evenly spread on the base material through the nine-roller spreader (46) to form a layered material layer. Step 4: The layered material runs along the first conveyor belt (4) to the igniter (30), the fuel is ignited to start the sintering reaction, the high temperature flue gas generated by sintering penetrates the bottom material and exchanges heat with the lump ore. The moisture in the lump ore evaporates into water vapor, which enters the electrostatic precipitator (27) for dust removal along with the flue gas, and is then extracted by the exhaust fan (31) and sent to the desulfurization and denitrification system for purification and discharge through the exhaust pipe (35). The dried lump ore is unloaded along with the sintering cake to the tail of the sintering machine and sent to the ring cooler. Step 5: When the feeding fan-shaped mechanism is working, the fixed shaft (48) drives the rotating rod (57) to rotate, and the scraper (59) slides along the inner wall of the feeding chute box (47) to remove the adhering material. When the feeding mechanism is working, the first rotating shaft (37) drives the first pulley (39) to rotate, and drives the second pulley (41) and connecting rod (43) to rotate through the belt (42). The striking block (44) periodically strikes the fixed frame (45).

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