Deslagging structure of blast furnace

Abstract

The utility model discloses a blast furnace deslagging structure, which belongs to the technical field of steelmaking blast furnaces and comprises a workshop, a molten iron diversion trench, a blast furnace, a high-temperature-resistant gate, a slag outlet A, a slag outlet B and a chain plate conveying belt, the blast furnace is arranged at the top of the workshop in a matched manner, the slag outlet A is mounted on the other side of the blast furnace through the high-temperature-resistant gate, and the slag outlet B is arranged at one end of the slag outlet A; a chain plate conveying belt and a molten iron flow guide groove are installed on the two sides of the interior of the workshop correspondingly, and the slag outlet A extends into the molten iron flow guide groove. According to the utility model, the material guide mechanism is arranged, and the anti-splashing cover, the flow guide screen plate, the movable cavity, the baffle plate and the winch are matched for use, so that blockage in the iron slag discharging process can be prevented through the inclined flow guide screen plate, and each component is matched with the slag outlet A and the slag outlet B for use; molten iron and iron slag can be separated and conveyed and guided through an independent channel, and therefore the iron slag can be further prevented from blocking the slag outlet A.

Description

Technical Field

[0001] This utility model belongs to the field of blast furnace technology in steelmaking, specifically a blast furnace slag discharge structure. Background Technology

[0002] A blast furnace uses steel plates as its shell, lined with refractory bricks. The blast furnace body is divided into five parts from top to bottom: the throat, the body, the waist, the belly, and the hearth. Due to the advantages of blast furnace ironmaking technology and economic indicators, simple process, large production capacity, high labor productivity, and low energy consumption, iron produced using this method accounts for the vast majority of the world's total iron production. After production is complete, molten iron and slag need to be discharged simultaneously. Discharging both at the same time can easily lead to slag outlet blockage. To prevent blockage, a blast furnace slag discharge structure is required.

[0003] Research and analysis have revealed that existing blast furnaces, after completing steelmaking, need to discharge slag and molten iron. During the discharge process, since both are discharged and transported simultaneously, it is easy to cause blockage at the slag outlet or insufficient material flow. Furthermore, because the discharged slag is high-temperature granular and lacks cooling components, the tires of the forklifts used by workers to transport the slag are prone to cracking due to the high temperature, resulting in high safety risks for workers and low efficiency in transporting the slag. Utility Model Content

[0004] The purpose of this utility model is to provide a blast furnace slag discharge structure to solve the problems of easy blockage of the slag outlet, low iron slag conveying efficiency, and high safety risks to workers.

[0005] The technical solution adopted by this utility model is as follows: A blast furnace slag discharge structure includes a working chamber, a molten iron guide channel, a blast furnace, a high-temperature resistant gate, a slag discharge port A, a slag discharge port B, and a chain conveyor belt. The blast furnace is installed on the top of the working chamber. A slag discharge port A is installed on the other side of the blast furnace through the high-temperature resistant gate. A slag discharge port B is provided at one end of the slag discharge port A. Both the inner walls of the slag discharge port A and the slag discharge port B are fitted with heat insulation layers. A chain conveyor belt and a molten iron guide channel are installed on both sides of the working chamber. The slag discharge port A extends into the molten iron guide channel, and the slag discharge port B extends above the head of the chain conveyor belt. The working chamber is equipped with an exhaust mechanism that can efficiently discharge the hot air generated in the working chamber and a cooling mechanism that can cool the high-temperature iron slag. A material guiding mechanism that can prevent the slag discharge port A from being blocked is provided inside the slag discharge port A.

[0006] The material guiding mechanism includes a splash guard, a flow guide plate, a movable cavity, a baffle, and a winch. A splash guard is welded to the outer end of slag outlet A. A flow guide plate is installed at the connection between slag outlet A and slag outlet B. A movable cavity is located near the flow guide plate at the connection between slag outlet A and slag outlet B. A baffle is elastically connected inside the movable cavity, and the baffle is connected to the movable cavity via a high-temperature resistant elastic connecting surface. A winch is installed at the top inside the working chamber, and the winch's steel cable is connected to the bottom of the baffle, guided by a guide wheel.

[0007] The cooling mechanism includes a water distribution pipe, a rotary joint, a nozzle, a motor, and a chain wheel. The water distribution pipe is installed on one side of the top of the working chamber via a bracket and is connected to a water pump for an external water tank. A nozzle is installed at the outlet of the water distribution pipe via a rotary joint, and there are several nozzles. The motor is installed on the other side of the top of the working chamber via a bracket. Chain wheels are welded to the output shaft end of the motor and the outside of the nozzles, and the chain wheels are connected by chain drive.

[0008] The exhaust mechanism includes an exhaust fan, a diversion exhaust pipe, an exhaust head, an electric cylinder, and a connecting rod. An exhaust fan is installed on the top of the work area. A diversion exhaust pipe is installed on the other side of the top of the work area via a bracket, and the diversion exhaust pipe is connected to the exhaust fan via a pipe. An exhaust head is connected to the outlet of the diversion exhaust pipe via a high-temperature resistant flexible hose. An electric cylinder is installed on one side of the top of the work area via a high-temperature resistant protective shell. A connecting rod is connected to the front end of the electric cylinder, and the connecting rod extends to the outside of the high-temperature resistant protective shell. The movable connection between the two is sealed with a sealing ring. There are several exhaust heads, and the exhaust heads are connected to the connecting rods via a movable shaft.

[0009] The splash guard, guide plate, baffle, diversion water pipe, nozzle, chain wheel, conveyor belt of chain plate conveyor belt, diversion exhaust pipe, exhaust head, and connecting rod are all made of high-temperature alloy material.

[0010] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:

[0011] 1. In this utility model, by setting up a material guiding mechanism, and through the cooperation of the splash guard, the guide mesh plate, the movable cavity, the baffle, and the winch, the inclined guide mesh plate can prevent blockage during the iron slag discharge process. Furthermore, by cooperating with the slag outlets A and B, the molten iron and iron slag can be separated and transported through independent channels, thus further preventing iron slag from blocking the slag outlet A.

[0012] 2. In this utility model, by setting up a cooling mechanism, and through the coordinated use of a water distribution pipe, a rotary joint, a nozzle, a motor, and a chain wheel, the discharged iron slag can be cooled by spraying water, thereby cooling the iron slag and saving time for subsequent iron slag processing steps.

[0013] 3. In this utility model, by setting up an exhaust mechanism, and through the coordinated use of an exhaust fan, a diversion exhaust pipe, an exhaust head, an electric cylinder, and a connecting rod, the high-temperature air inside the work area can be effectively discharged, thereby reducing the temperature of various components inside the work area and thus effectively improving the service life of various components inside the work area. Attached Figure Description

[0014] Figure 1 This is a simplified schematic diagram of the overall front structure of this utility model;

[0015] Figure 2 This utility model Figure 1 A simplified diagram of the enlarged structure at point A in the middle;

[0016] Figure 3 This utility model Figure 1 A simplified diagram of the enlarged structure at point B;

[0017] Figure 4 This is a simplified schematic diagram of the overall structure of the back of this utility model;

[0018] Figure 5 This utility model Figure 4 A simplified diagram of the enlarged structure at point C.

[0019] Figure 6 This is a simplified schematic diagram of a partial three-dimensional structure of the present invention.

[0020] The markings in the diagram are: 1. Working area; 101. Hot metal guide channel; 2. Blast furnace; 201. High-temperature resistant gate; 202. Slag outlet A; 203. Slag outlet B; 3. Splash guard; 4. Guide mesh plate; 5. Movable chamber; 501. Baffle; 502. Winch; 6. Diversion water pipe; 601. Rotary joint; 602. Nozzle; 7. Motor; 701. Chain wheel; 8. Chain conveyor belt; 9. Exhaust fan; 901. Diversion exhaust pipe; 902. Exhaust head; 903. Electric cylinder; 9031. Connecting rod. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Example 1:

[0023] Reference Figure 1-6 A blast furnace slag discharge structure includes a working chamber 1, a molten iron guide channel 101, a blast furnace 2, a high-temperature resistant gate 201, a slag discharge port A202, a slag discharge port B203, and a chain conveyor belt 8. The blast furnace 2 is mounted on the top of the working chamber 1. A slag discharge port A202 is installed on the other side of the blast furnace 2 via the high-temperature resistant gate 201. A slag discharge port B203 is located at one end of slag discharge port A202, and both slag discharge ports A202 and B203 have heat insulation layers fitted to their inner walls. The inner sides of the working room 1 are respectively equipped with a chain conveyor belt 8 and a molten iron guide trough 101, and the slag outlet A202 extends into the molten iron guide trough 101, and the slag outlet B203 extends to the head of the chain conveyor belt 8. The working room 1 is equipped with an exhaust mechanism that can efficiently discharge the hot air generated in the working room 1 and a cooling mechanism that can cool the high temperature slag. The slag outlet A202 is equipped with a material guiding mechanism that can prevent the slag outlet A202 from being blocked.

[0024] The material guiding mechanism includes a splash guard 3, a flow guide plate 4, a movable cavity 5, a baffle 501, and a winch 502. The splash guard 3 is welded to the outer side of the end of the slag outlet A202. The flow guide plate 4 is installed at the connection between the slag outlet A202 and the slag outlet B203. The movable cavity 5 is installed on the side of the connection between the slag outlet A202 and the slag outlet B203 near the flow guide plate 4. The baffle 501 is elastically connected inside the movable cavity 5, and the baffle 501 and the movable cavity 5 are connected by a high-temperature resistant elastic connecting surface. The winch 502 is installed on the top of the working chamber 1, and the steel cable of the winch 502 is connected to the bottom of the baffle 501. The steel cable is guided by a guide wheel.

[0025] Reference Figure 1 , 3 In this embodiment, the cooling mechanism includes a water distribution pipe 6, a rotary joint 601, a nozzle 602, a motor 7, and a chain wheel 701. The water distribution pipe 6 is installed on one side of the top of the working chamber 1 via a bracket, and the water distribution pipe 6 is connected to the water pump of the external water tank. A nozzle 602 is installed at the outlet of the water distribution pipe 6 via a rotary joint 601, and there are several nozzles 602. The motor 7 is installed on the other side of the top of the working chamber 1 via a bracket. Chain wheels 701 are welded to the output shaft end of the motor 7 and the outside of the nozzles 602, and the chain wheels 701 are driven by a chain.

[0026] Reference Figure 4-6In this embodiment, the exhaust mechanism includes an exhaust fan 9, a diversion exhaust pipe 901, an exhaust head 902, an electric cylinder 903, and a connecting rod 9031. The exhaust fan 9 is installed on the top of the work area 1. The diversion exhaust pipe 901 is installed on the other side of the top inside the work area 1 via a bracket and is connected to the exhaust fan 9 via a pipe. The exhaust head 902 is connected to the outlet of the diversion exhaust pipe 901 via a high-temperature resistant flexible hose. The electric cylinder 903 is installed on one side of the top inside the work area 1 via a high-temperature resistant protective shell. The front end of the electric cylinder 903 is connected to the connecting rod 9031, and the connecting rod 9031 extends to the outside of the high-temperature resistant protective shell. The movable connection between the two is sealed with a sealing ring. There are several exhaust heads 902, and the exhaust heads 902 are connected to the connecting rod 9031 via a movable shaft.

[0027] Reference Figure 1-6 In this embodiment, the splash guard 3, the guide net plate 4, the baffle 501, the diversion water pipe 6, the nozzle 602, the chain wheel 701, the conveyor belt of the chain conveyor belt 8, the diversion exhaust pipe 901, the exhaust head 902, and the connecting rod 9031 are all made of high-temperature alloy material. Because high-temperature alloy material has extremely high temperature resistance and can withstand temperatures of 1500 degrees Celsius, using it as the above-mentioned accessories can effectively improve the service life of each accessory in high-temperature environments, thereby enabling each component to carry out its own work more efficiently and effectively improving work efficiency.

[0028] Reference Figure 1-6 In this embodiment, the blast furnace 2, the high-temperature resistant gate 201, the winch 502, the water pump, motor 7, chain conveyor belt 8, exhaust fan 9, and electric cylinder 903 are all electrically connected to the external power supply via switches.

[0029] Working principle: First, the operator opens the high-temperature resistant gate 201, mixing slag and molten iron together and discharging it through the slag outlet A202. During the discharge process, the molten iron flows through the mesh guide plate 4 into the molten iron guide trough 101, while the slag is blocked by the baffle 501. At this time, the operator controls the winch 502 to automatically and periodically reel in the steel cable. When the steel cable is retracted, it pulls the baffle 501 back into the movable chamber 5, thereby releasing the obstruction of the slag and allowing it to fall through the slag outlet B203 onto the chain conveyor belt 8 for transport. When the steel cable is released, the baffle 501, affected by the spring, pops out again to block the slag. This repetitive action prevents blockage during the slag discharge process. When slag is conveyed by the chain conveyor belt 8, water can be pumped through the diversion pipe 6 by starting an external water pump and sprayed out through the nozzle 602. The motor 7 drives the chain wheel 701 to rotate. Under the transmission of the chain wheel 701 and the chain, the rotary joint 601 drives the nozzle 602 to rotate. This allows the sprayed water to spread outward due to centrifugal force, thereby increasing the spray area. At the same time, the exhaust fan 9 can be started to extract the high-temperature air from the working room 1 using the exhaust heads 902. The electric cylinder 903 can be controlled to drive the connecting rod 9031 to reciprocate, thereby driving the exhaust heads 902 to reciprocate synchronously under the action of the high-temperature resistant hose, thereby increasing the exhaust area.

[0030] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A blast furnace slag discharge structure, comprising a working chamber (1), a molten iron guide channel (101), a blast furnace (2), a high-temperature resistant gate (201), a slag discharge port A (202), a slag discharge port B (203), and a chain conveyor belt (8), wherein the blast furnace (2) is fitted on the top of the working chamber (1), and a slag discharge port A (202) is installed on the other side of the blast furnace (2) through the high-temperature resistant gate (201), and a slag discharge port B (203) is provided at one end of the slag discharge port A (202). The chain conveyor belt (8) and the molten iron guide channel (101) are respectively installed on both sides inside the working chamber (1), and the slag discharge port A (202) extends into the molten iron guide channel (101), and the slag discharge port B (203) extends above the head of the chain conveyor belt (8), characterized in that: The working room (1) is equipped with an exhaust mechanism that can efficiently discharge the hot air generated in the working room (1) and a cooling mechanism that can cool the high-temperature iron slag. The slag outlet A (202) is equipped with a material guiding mechanism that can prevent the slag outlet A (202) from being blocked. The material guiding mechanism includes a splash guard (3), a flow guide plate (4), a movable cavity (5), a baffle (501), and a winch (502). The splash guard (3) is welded to the outer side of the end of the slag outlet A (202). The flow guide plate (4) is provided at the connection between the slag outlet A (202) and the slag outlet B (203). The movable cavity (5) is provided on the side of the connection between the slag outlet A (202) and the slag outlet B (203) near the flow guide plate (4). The baffle (501) is elastically connected inside the movable cavity (5). The winch (502) is installed on the top of the interior of the working chamber (1).

2. The blast furnace slag discharge structure as described in claim 1, characterized in that: The cooling mechanism includes a water distribution pipe (6), a rotary joint (601), a nozzle (602), a motor (7), and a chain wheel (701). The water distribution pipe (6) is installed on one side of the top of the work chamber (1) via a bracket. The nozzle (602) is installed at the outlet of the water distribution pipe (6) via a rotary joint (601). The motor (7) is installed on the other side of the top of the work chamber (1) via a bracket. The chain wheel (701) is welded to both the output shaft end of the motor (7) and the outside of the nozzle (602).

3. The blast furnace slag discharge structure as described in claim 1, characterized in that: The exhaust mechanism includes an exhaust fan (9), a diversion exhaust pipe (901), an exhaust head (902), an electric cylinder (903), and a connecting rod (9031). The exhaust fan (9) is installed on the top of the work room (1). The diversion exhaust pipe (901) is installed on the other side of the top inside the work room (1) via a bracket. The exhaust head (902) is connected to the air outlet of the diversion exhaust pipe (901) via a high-temperature resistant hose. The electric cylinder (903) is installed on one side of the top inside the work room (1) via a high-temperature resistant protective shell. The front end of the electric cylinder (903) is connected to the connecting rod (9031).

4. The blast furnace slag discharge structure as described in claim 1, characterized in that: The steel cable of the winch (502) is connected to the bottom of the baffle (501), and the steel cable is guided by the guide wheel. The baffle (501) and the movable cavity (5) are connected by a high-temperature resistant elastic connecting surface. The inner walls of the slag outlet A (202) and the slag outlet B (203) are both fitted with heat insulation layers.

5. A blast furnace slag discharge structure as described in claim 2, characterized in that: The number of nozzles (602) is several, and each sprocket (701) is driven by a chain, and the water distribution pipe (6) is connected to the water pump of the external water tank.

6. The blast furnace slag discharge structure as described in claim 3, characterized in that: The connecting rod (9031) extends to the outside of the high-temperature protective shell, and the two are sealed by a sealing ring at the movable connection point. There are several exhaust heads (902), and the exhaust heads (902) are connected to the connecting rod (9031) by a movable shaft. The diversion exhaust pipe (901) is connected to the exhaust fan (9) through a pipe.

7. A blast furnace slag discharge structure as described in claim 2, characterized in that: The splash guard (3), guide net plate (4), baffle (501), diversion water pipe (6), nozzle (602), chain wheel (701), conveyor belt of chain plate conveyor belt (8), diversion exhaust pipe (901), exhaust head (902), and connecting rod (9031) are all made of high temperature alloy material.

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