Blast furnace ironmaking system capable of improving coal gas utilization rate

Abstract

The blast furnace ironmaking system comprises a blast furnace and a material distributing device arranged at the top of the blast furnace, the material distributing device comprises a rotating ring and a support arranged on the inner side of the rotating ring, a plurality of supporting rings are concentrically arranged on the support, and a plurality of material receiving tanks are evenly distributed on each supporting ring in the circumferential direction; a telescopic material guide pipe is arranged at the bottom of the material receiving tank, an annular material receiving groove is obliquely formed above the rotating ring through a connecting rod, a plurality of circles of annular partition plates are concentrically arranged in the material receiving groove, the material receiving groove is divided into a plurality of independent annular grooves by the partition plates, and a discharging opening is formed in the lowest position of each annular groove; a plurality of material distributing pipes communicated with the material receiving tanks on the corresponding supporting rings are arranged at the lower end of the discharging port, an air cylinder and a plurality of material storage tanks are arranged above the material receiving groove, a vertical rod is arranged at the end of a piston rod of the air cylinder, and a connecting frame is arranged at the lower end of the vertical rod. In conclusion, the coal gas distributor has the advantages of high distribution precision, uniform coal gas flow distribution and high distribution efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of blast furnace ironmaking, and in particular to a blast furnace ironmaking system for improving gas utilization. Background Art

[0002] When the blast furnace ironmaking system is in operation, iron ore, coke, and limestone are loaded from the top of the furnace, and preheated hot air is blown in from the tuyere located at the bottom of the furnace along the furnace periphery. The oxygen in the hot air consumes the coke, coal powder and other fuels nearby to produce blast furnace gas flow. The iron ore contacts the rising gas flow during the descent process, thereby reducing to obtain iron. In the daily smelting process of modern blast furnaces, the blast furnace gas utilization rate is an important indicator reflecting the blast furnace fuel consumption and process operation level. Improving the gas utilization rate is one of the main ways for enterprises to reduce blast furnace fuel consumption and production costs. Blast furnace operators usually adjust the upper and lower parts of the blast furnace based on experience to improve the gas utilization rate. The upper adjustment is the blast furnace distribution, which refers to the distribution of ore and coke in the blast furnace throat during the blast furnace ironmaking process.

[0003] The blast furnace distributor is an important part of the blast furnace ironmaking system. It is installed on the top of the blast furnace. The distribution process is that the charge enters the rotating chute from the storage tank at a certain material flow rate, and the chute rotates into a parabola and falls into the furnace to complete the distribution ring by ring. There are still the following problems: First, the position of the charge falling point is not easy to grasp, the distribution accuracy is not high, and the width of the circular ring material surface in the furnace is difficult to control; second, with the large-scale blast furnace, the batch size increases, the impact force of the material flow increases, and the probability of distribution segregation is inevitably increased, which increases the difficulty of distribution, affects the distribution of coal gas flow, and then affects the utilization rate of coal gas; third, the distribution efficiency is not high, the distribution time is long, and it cannot meet the distribution needs of the large-scale blast furnace. Therefore, it is an objective need to develop a blast furnace ironmaking system with high distribution accuracy, uniform distribution of coal gas flow, high distribution efficiency, and improved gas utilization. Summary of the invention

[0004] The object of the present invention is to provide a blast furnace ironmaking system with high distribution accuracy, uniform gas flow distribution, high distribution efficiency and improved gas utilization.

[0005] The object of the present invention is achieved in this way, comprising a blast furnace and a distribution device arranged on the top of the blast furnace, the distribution device comprising a swivel and a bracket arranged on the inner side of the swivel, a driving mechanism for driving the swivel to rotate is arranged on the outer side of the blast furnace, a plurality of support rings are concentrically arranged on the bracket, a plurality of material receiving tanks are evenly distributed on the circumference of each support ring, a telescopic material guiding pipe is arranged at the bottom of the material receiving tank, a circular material receiving trough is obliquely arranged above the swivel through a connecting rod, a plurality of annular partitions are concentrically arranged in the material receiving trough, the partitions divide the material receiving trough into a plurality of independent annular grooves, a discharge port is arranged at the lowest point of each annular groove, a plurality of material distribution pipes connected with the material receiving tanks on the corresponding support rings are arranged at the lower end of the discharge port, a cylinder and a plurality of storage tanks are arranged above the material receiving trough, the discharge pipes of the plurality of storage tanks are respectively extended into the corresponding annular grooves, a vertical rod is arranged at the end of the piston rod of the cylinder, a connecting frame is arranged at the lower end of the vertical rod, and the connecting frame is connected to the lower ends of the telescopic material guiding pipes.

[0006] Furthermore, a plurality of speed brakes are staggered up and down in the receiving tank, and the speed brakes are tilted, with the higher end of the speed brake fixedly connected to the receiving tank and the lower end suspended.

[0007] Furthermore, a plurality of material equalizing plates are arranged at intervals at the lower portion of the telescopic material guiding tube.

[0008] Furthermore, the material receiving tanks on two adjacent support rings are arranged staggered with each other.

[0009] Furthermore, the driving mechanism includes a motor and a gear mounted on an output shaft of the motor, and a gear ring meshing with the gear is mounted on the rotating ring.

[0010] Furthermore, a telescopic hose is connected to the lower end of the discharge pipe of the storage tank, end plates are arranged at both ends of the telescopic hose, a spring is arranged between the two end plates, and a limit rod is arranged at the lower end of the telescopic hose.

[0011] Furthermore, a roller is arranged at the lower end of the limiting rod.

[0012] Furthermore, a vibrator is provided at the bottom of the receiving trough.

[0013] The beneficial effects of the present invention are as follows: 1. When the present invention is in operation, the iron ore, coke and other furnace materials to be added are respectively loaded into the corresponding storage tanks, the driving mechanism is started, the driving mechanism drives the rotating ring to rotate, the rotating ring drives the bracket, the support ring, the receiving tank, the connecting rod and the receiving trough to rotate in turn, the gate valve on the discharge pipe of the storage tank is opened, and the furnace material in the storage tank falls into the corresponding annular groove through the discharge pipe, and the furnace material moves toward the lowest point of the annular groove under the action of its own gravity until it is discharged from the discharge port, the furnace material is divided into multiple strands through the distribution pipe, and respectively sent to each receiving tank, and finally discharged from the telescopic guide pipe at the bottom of the receiving tank, thereby realizing the distribution of the furnace material in the blast furnace, and the whole distribution process is simple and continuous. It is smooth and has high charging efficiency. During the charging process, the receiving tank on each support ring is used for charging the charge within an annular range in the blast furnace, and each support ring is provided with multiple receiving tanks. Multiple receiving tanks can charge at the same time, thereby greatly shortening the charging time within the annular range in the blast furnace. Secondly, multiple support rings are provided, and each support ring corresponds to an annular charging range in the blast furnace. The receiving tanks on multiple support rings charge at the same time, that is, multiple charging ranges are charged at the same time, which has a faster charging speed and higher charging efficiency, and also improves the uniformity of charging, can meet the charging needs of large-scale blast furnaces, and has good applicability.

[0014] 2. Compared with the traditional charging device which uses a rotating chute for charging, the charge in the present invention will fall into the receiving tank and then fall vertically from the receiving tank for charging, thus avoiding the parabolic dropping of the charge by a rotating chute. The falling point of the charge is easier to grasp, thus avoiding the process of the charge being thrown and scattered in the air. The charge is more closed and concentrated, which is more conducive to ensuring the control of the width of the circular ring material surface in the furnace, improving the charging accuracy, and being able to better complete the expected charging.

[0015] 3. Aiming at the existing problems that there is less charge in the furnace in the early stage of charge distribution, the distance between the charge distribution device and the charge distribution point is far, while there is more charge in the furnace in the later stage of charge distribution, the distance between the charge distribution device and the charge distribution point is close, which makes the charge distribution range unstable and the charge impact force unstable. A cylinder is provided, which can drive the connecting frame to move up and down. When the connecting frame moves up, it drives the telescopic guide pipe to shrink. On the contrary, when the connecting frame moves down, it drives the telescopic guide pipe to extend. When there is less charge in the furnace, the telescopic guide pipe can be extended. When there is more charge in the furnace, the telescopic guide pipe can be retracted, so that the height between the lower end of the telescopic guide pipe and the charge surface is always in a basically unchanged state. At the same time, according to different batches of charge, the charge falling height is appropriately adjusted, so that even when the batch of charge increases, the charge distribution range and the impact force of the charge falling can be stabilized, the probability of charge segregation and the difficulty of charge distribution can be reduced, the gas flow distribution can be stabilized and uniform, and the gas utilization rate can be improved.

[0016] In summary, the present invention adopts a plurality of support rings, and each support ring is provided with a plurality of receiving tanks to distribute the charge. The distribution process is simple, continuous and smooth, and has a high distribution efficiency. At the same time, the height of the charge drop is adjustable, and can be adjusted in real time according to the actual conditions such as the charge height and the charge batch, so as to stabilize the distribution range and the impact force of the charge drop, reduce the probability of distribution segregation and the distribution difficulty, stabilize and evenly distribute the gas flow, and improve the gas utilization rate. In addition, the charge drop method is changed to avoid the parabolic drop method of the traditional charge. The charge does not have the process of flying and scattering. Relatively speaking, the charge is more closed and concentrated, which is more conducive to ensuring the control of the width of the circular ring charge surface in the furnace, and improves the distribution accuracy. Through the above process, the blast furnace is effectively adjusted from the top, and the distribution method of charges such as iron ore and coke is rationalized, so that when the blast furnace is running, the gas flow can be evenly distributed, the gas utilization rate is improved, and the fuel consumption of the blast furnace is reduced. In summary, the present invention has the advantages of high material distribution accuracy, uniform gas flow distribution and high material distribution efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the top view of the structure of the rotating ring 2 in the present invention; Figure 3 for Figure 1 A schematic diagram of the enlarged structure of the midpoint A; Figure 4 It is a structural schematic diagram of the material balancing plate 17 in the present invention; In the figure: 1-blast furnace, 2-swivel, 3-bracket, 4-support ring, 5-receiving tank, 6-telescopic guide pipe, 7-receiving trough, 8-partition, 9-ring groove, 10-distributing pipe, 11-cylinder, 12-storage tank, 13-vertical rod, 14-connecting frame, 15-vibrator, 16-speed reducer, 17-equalizing plate, 18-motor, 19-gear, 20-gear ring, 21-telescopic hose, 22-spring, 23-limit rod, 24-roller. DETAILED DESCRIPTION

[0018] The present invention is further described below in conjunction with the accompanying drawings, but the present invention is not limited in any way. Any changes or improvements made based on the present invention belong to the protection scope of the present invention.

[0019] like Figures 1 to 4As shown, the present invention includes a blast furnace 1 and a charging device arranged on the top of the blast furnace 1, the charging device includes a swivel 2 and a bracket 3 arranged on the inner side of the swivel 2, a driving mechanism for driving the swivel 2 to rotate is arranged on the outer side of the blast furnace 1, the driving mechanism is a prior art, which can drive the swivel 2 to rotate, and then drive the charging device to rotate, the bracket 3 can be a straight-line or cross-shaped structure, which is convenient for setting a support ring 4, a plurality of support rings 4 are concentrically arranged on the bracket 3, and a plurality of receiving tanks 5 are evenly distributed on each support ring 4, the receiving tank 5 is used to receive the furnace charge falling from the distribution pipe 10, and the furnace charge falls into the furnace from the bottom of the receiving tank 5, and a telescopic guide pipe 6 is arranged at the bottom of the receiving tank 5, the telescopic guide pipe 6 can be made of high-temperature resistant material, and can be freely retracted, and a circular receiving groove is inclined above the swivel 2 through a connecting rod. 7. A plurality of annular partitions 8 are concentrically arranged in the material receiving trough 7, and the partitions 8 divide the material receiving trough 7 into a plurality of independent annular grooves 9. In order to prevent the furnace charge from popping out of the material receiving trough 7, the depth of the material receiving trough 7 can be appropriately deepened. A discharge port is arranged at the lowest point of each annular groove 8, and a plurality of material distribution pipes 10 connected with the material receiving tank 5 on the corresponding support ring 4 are arranged at the lower end of the discharge port. A cylinder 11 and a plurality of material storage tanks 12 are arranged above the material receiving trough 7. The cylinder 11 is a prior art. In actual use, a lifting mechanism of other structural forms can also be adopted to drive the connecting frame 14 to move up and down. The discharge pipes of the plurality of material storage tanks 12 are respectively extended into the corresponding annular grooves 8. A vertical rod 13 is arranged at the end of the piston rod of the cylinder 11, and a connecting frame 14 is arranged at the lower end of the vertical rod 13. The connecting frame 14 is connected to the lower end of each telescopic material guide pipe 6.

[0020] The operation process of the present invention is as follows: the iron ore, coke and other furnace materials that need to be added are respectively loaded into the corresponding storage tanks 12, and the driving mechanism is started. The driving mechanism drives the swivel 2 to rotate, and the swivel 2 drives the bracket 3, the support ring 4, the receiving tank 5, the connecting rod and the receiving groove 7 to rotate in turn, and the gate valve on the discharge pipe of the storage tank 12 is opened. The furnace material in the storage tank 12 falls into the corresponding annular groove 9 through the discharge pipe. Under the action of its own gravity, the furnace material moves toward the lowest point of the annular groove 9 until it is discharged from the discharge port. The furnace material is divided into multiple strands through the distribution pipe 10 and respectively sent to each receiving tank 5, and finally discharged from the telescopic guide pipe 6 at the bottom of the receiving tank 5, thereby realizing the distribution of the furnace material in the blast furnace. The whole distribution process is simple. The charging process is simple, continuous and smooth, with high charging efficiency, and in the charging process, the receiving tank 5 on each support ring 4 is used for charging the charge within an annular range in the blast furnace 1, and each support ring 4 is provided with a plurality of receiving tanks 5, and a plurality of receiving tanks 5 can charge at the same time, thereby greatly shortening the charging time within the annular range in the blast furnace; secondly, a plurality of support rings 4 are provided, and each support ring 4 corresponds to an annular charging range in the blast furnace 1, and the receiving tanks 5 on a plurality of support rings 4 charge at the same time, that is, charging is performed on a plurality of charging ranges at the same time, with a faster charging speed and a higher charging efficiency, and the uniformity of charging is also improved, so that the charging needs of the large-scale blast furnace 1 can be met, and the applicability is good.

[0021] Compared with the traditional charging device using a rotating chute for charging, the charge in the present invention will fall into the receiving tank 5 and then fall vertically from the receiving tank 5 for charging, avoiding the parabolic dropping of the charge by a rotating chute. The falling point of the charge is easier to grasp, avoiding the process of the charge being thrown and scattered in the air. The charge is more closed and concentrated, which is more conducive to ensuring the control of the width of the circular ring material surface in the furnace, improving the charging accuracy, and can better complete the expected charging.

[0022] In view of the existing problems that there is less charge in the furnace in the early stage of charge distribution, the distance between the charge distribution device and the charge distribution point is far, while there is more charge in the furnace in the later stage of charge distribution, the distance between the charge distribution device and the charge distribution point is close, which makes the charge distribution range unstable and the charge impact force unstable, a cylinder 11 is provided, and the cylinder 11 can drive the connecting frame 14 to move up and down. When the connecting frame 14 moves up, it drives the telescopic guide pipe 6 to shrink, and vice versa, when the connecting frame 14 moves down, it drives the telescopic guide pipe 6 to extend. When there is less charge in the furnace, the telescopic guide pipe 6 can be extended, and when there is more charge in the furnace, the telescopic guide pipe 6 can be retracted. Through this adjustment method, the height between the lower end of the telescopic guide pipe 6 and the charge surface is always in a basically unchanged state. At the same time, according to different batches of charge, the charge drop height is appropriately adjusted, and even when the batch of charge increases, the charge distribution range and the charge drop impact force can be stabilized, the probability of charge segregation and the difficulty of charge distribution can be reduced, the gas flow distribution can be stabilized and uniform, and the gas utilization rate can be improved.

[0023] In summary, the present invention adopts a plurality of support rings 4, and each support ring 4 is provided with a plurality of receiving tanks 5 to distribute the charge. The distribution process is simple, continuous and smooth, and has a high distribution efficiency. At the same time, the height of the charge drop is adjustable, and can be adjusted in real time according to the actual conditions such as the charge height and the charge batch, so as to stabilize the distribution range and the impact force of the charge drop, reduce the probability of charge segregation and the difficulty of charge distribution, stabilize and evenly distribute the gas flow, and improve the gas utilization rate. In addition, the charge drop mode is changed to avoid the parabolic drop mode of the traditional charge. The charge does not have the process of flying and scattering. Relatively speaking, the charge is more closed and concentrated, which is more conducive to ensuring the control of the width of the circular ring charge surface in the furnace, and improves the distribution accuracy. Through the above process, the blast furnace is effectively adjusted from the top, and the distribution mode of the charge such as iron ore and coke is rationalized, so that when the blast furnace 1 is in operation, the gas flow can be evenly distributed, the gas utilization rate is improved, and the fuel consumption of the blast furnace 1 is reduced.

[0024] A plurality of deceleration plates 16 are staggered up and down in the material receiving tank 5. The deceleration plates 16 are tilted, and the higher end of the deceleration plates 16 is fixedly connected to the material receiving tank 5, and the lower end is suspended. When the charge falls from the discharge pipe of the storage tank 12, passes through the receiving trough 7 and the distribution pipe 10, and falls into the receiving tank 5, it has a large falling speed and gravitational potential energy, and as the charge continues to fall, the falling speed and gravitational potential energy will become larger and larger. When it falls into the furnace, it will generate a large impact force, thereby increasing the probability of charge segregation and the difficulty of charge distribution, reducing the charge distribution accuracy, destroying the stability and uniformity of the gas flow distribution, and thereby reducing the gas utilization rate. In order to alleviate the above problems, a deceleration plate 16 is set. When the charge falls into the receiving tank 5, it will fall on the deceleration plate 16. The deceleration plate 16 blocks the charge, forcing the charge to decelerate, and then continue to move along the deceleration plate 16, fall on the next deceleration plate 16, and decelerate again. By analogy, after multiple decelerations, the charge has greatly reduced its falling speed, reduced its falling speed and gravitational potential energy, and thereby reduced the impact force when the charge falls into the furnace, thereby improving the charge distribution accuracy and the gas utilization rate.

[0025] A plurality of equalizing plates 17 are arranged at intervals at the lower part of the telescopic guide tube 6. Iron ore, coke and other furnace materials fall from the telescopic guide tube 6. The equalizing plates 17 can make the furnace materials fall from the telescopic guide tube 6 more evenly and distribute more evenly after falling.

[0026] During the process of distributing charge to the blast furnace 1, charge can be distributed to multiple annular ranges in the furnace at the same time. In order to avoid collision between charges during and after falling, and to facilitate the installation of the distribution pipe 10, the receiving tanks 5 on two adjacent support rings 4 are staggered. The staggered angle is determined according to actual needs and can generally be staggered by 90°.

[0027] The driving mechanism includes a motor 18 and a gear 19 installed on the output shaft of the motor 18, and a ring gear 20 meshing with the gear 19 is installed on the rotating ring 2. The motor 18 is an existing device, which can be purchased, installed and used according to the actual power, speed and other parameters. During operation, the motor 18 drives the gear 19 to rotate, the gear 19 drives the ring gear 20 to rotate, the ring gear 20 drives the rotating ring 2 to rotate, and then drives the bracket 3, the support ring 4, the material receiving tank 5 and other components to rotate synchronously, and finally realizes the rotation of the entire distribution device. In actual setting, the driving mechanism can also be installed according to actual needs, which can smoothly drive the distribution device to rotate and can adapt to the working environment around the blast furnace 1.

[0028] The lower end of the discharge pipe of the storage tank 12 is connected with a telescopic hose 21, and end plates are provided at both ends of the telescopic hose 21. A spring 22 is provided between the two end plates, and a limit rod 23 is provided at the lower end of the telescopic hose 21. In the present invention, the receiving chute 7 is arranged at an angle. It is found during the operation of the blast furnace 1 that since the receiving chute 7 is in a rotating state and the storage tank 12 is in a static state, a problem will arise. The distance between the lower end of the discharge pipe of the storage tank 12 and the receiving chute 7 will change with the rotation of the receiving chute 7. When the lower end of the receiving chute 7 is located below the storage tank 12, the distance between the storage tank 12 and the receiving chute 7 becomes larger, and the path that the falling charge needs to fall becomes longer, which will have a greater impact on the receiving chute 7, destroy the stability of the rotation of the receiving chute 7, cause the charge to rebound, or even fly out of the receiving chute 7, causing safety hazards, and generating more dust, which is not conducive to the normal operation of the blast furnace 1. In order to solve this problem, a The telescopic hose 21, spring 22 and limit rod 23 are installed so that the spring 22 is in a compressed state during installation. Then, during use, the spring 22 will spring up and then extend, driving the telescopic hose 21 to extend, and at the same time driving the limit rod 23 to move downward, so that the lower end of the limit rod 23 is against the material receiving trough 7, so that the distance between the lower end of the telescopic hose 21 and the material receiving trough 7 is a fixed value, which is used to solve the problem of the long falling path of the charge, thereby avoiding the above-mentioned problems. In actual setting, the limit rod 23 is used to separate the lower end of the telescopic hose 21 from the material receiving trough 7, so as to facilitate the charge to fall out of the lower end of the telescopic hose 21. The length of the limit rod 23 is determined according to the actual conditions such as the charge block diameter and the discharge speed.

[0029] The lower end of the limit rod 23 is provided with a roller 24. When the system is in operation, the limit rod 23 is pressed downward under the action of the spring 22, so that the lower end of the limit rod 23 is tightly attached to the bottom of the material receiving trough 7, thereby controlling the falling height of the charge. It is found during long-term use that due to friction, in addition to the lower end of the limit rod 23 itself causing certain damage, the bottom of the material receiving trough 7 will also be damaged, thereby shortening the service life of the material receiving trough 7 and the limit rod 23, and even the lower end of the limit rod 23 will sink into the scratches on the material receiving trough 7, causing the material receiving trough 7 to get stuck when rotating, affecting the normal distribution of the charge. In order to solve this problem, a roller 24 is provided, and the hard friction between the limit rod 23 and the material receiving trough 7 is changed into rolling friction between the roller 24 and the material receiving trough 7, which can prevent the limit rod 23 and the material receiving trough 7 from being damaged and extend the service life, and can also ensure the smooth rotation of the material receiving trough 7.

[0030] A vibrator 15 is provided at the bottom of the receiving trough 7. When the blast furnace is in operation, iron ore, coke and other furnace materials fall from the storage tank 12 to the receiving trough 7, and then move along the bottom surface of the receiving trough 7 to its lowest point under the action of their own gravity. In the actual operation process, it is found that due to problems such as material moisture, particle size or some other reasons, some furnace materials may adhere to the receiving trough 7. As time goes by, more and more furnace materials adhere, which in turn affects the normal movement and transportation of the furnace materials. In order to solve and alleviate such problems, a vibrator 15 is installed on the receiving trough 7. The vibrator 15 is an existing vibration device that can generate vibrations, causing the receiving trough 7 to vibrate, and then vibrate the furnace materials adhered to the bottom of the receiving trough 7 to ensure that the furnace materials can move smoothly in the receiving trough 7.

Claims

1. A blast furnace ironmaking system for improving gas utilization, comprising a blast furnace (1) and a material distribution device arranged on the top of the blast furnace (1), characterized in that The material distribution device comprises a rotating ring (2) and a bracket (3) arranged on the inner side of the rotating ring (2); a driving mechanism for driving the rotating ring (2) to rotate is arranged on the outer side of the blast furnace (1); a plurality of support rings (4) are concentrically arranged on the bracket (3); a plurality of material receiving tanks (5) are evenly distributed on the circumference of each support ring (4); a telescopic material guide pipe (6) is arranged at the bottom of the material receiving tank (5); a circular material receiving trough (7) is arranged obliquely above the rotating ring (2) through a connecting rod; a plurality of annular partitions (8) are concentrically arranged in the material receiving trough (7); the partitions (8) separate the material receiving trough (7) into a plurality of independent The annular groove (9) is provided with a discharge port at the lowest point of each annular groove (8), and a plurality of material distribution pipes (10) are provided at the lower end of the discharge port and are connected to the material receiving tank (5) on the corresponding support ring (4). A cylinder (11) and a plurality of material storage tanks (12) are provided above the material receiving groove (7), and the discharge pipes of the plurality of material storage tanks (12) extend into the corresponding annular groove (8) respectively. A vertical rod (13) is provided at the end of the piston rod of the cylinder (11), and a connecting frame (14) is provided at the lower end of the vertical rod (13), and the connecting frame (14) is connected to the lower end of each telescopic material guide pipe (6).

2. A blast furnace ironmaking system for improving gas utilization according to claim 1, characterized in that A plurality of speed reducers (16) are arranged in an alternating manner up and down in the material receiving tank (5). The speed reducers (16) are arranged obliquely, and the higher end of the speed reducer (16) is fixedly connected to the material receiving tank (5), while the lower end is arranged in the air.

3. A blast furnace ironmaking system for improving gas utilization according to claim 1, characterized in that A plurality of material equalizing plates (17) are arranged at intervals at the lower portion of the telescopic material guiding tube (6).

4. A blast furnace ironmaking system for improving gas utilization according to claim 1, characterized in that The material receiving tanks (5) on two adjacent support rings (4) are arranged staggered with each other.

5. A blast furnace ironmaking system for improving gas utilization according to claim 1, characterized in that The driving mechanism comprises a motor (18) and a gear (19) mounted on an output shaft of the motor (18); a gear ring (20) meshing with the gear (19) is mounted on the rotating ring (2).

6. A blast furnace ironmaking system for improving gas utilization according to claim 1, characterized in that The lower end of the discharge pipe of the storage tank (12) is connected to a telescopic hose (21), both ends of the telescopic hose (21) are provided with end plates, a spring (22) is provided between the two end plates, and a limit rod (23) is provided at the lower end of the telescopic hose (21).

7. A blast furnace ironmaking system for improving gas utilization according to claim 6, characterized in that A roller (24) is provided at the lower end of the limiting rod (23).

8. A blast furnace ironmaking system for improving gas utilization according to claim 1, characterized in that A vibrator (15) is provided at the bottom of the receiving trough (7).

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