Molten iron silicon increasing device for blast furnace smelting production

Abstract

The utility model discloses a molten iron silicon increasing device for blast furnace smelting production, which comprises a working table and a gear, a support is arranged at the bottom of the working table, a smelting furnace is arranged below the working table, a controller is arranged on the surface of the working table, a feeding pipe is arranged at the midpoint of the working table in a penetrating manner, a stock bin is arranged at the top of the feeding pipe, and the gear is arranged in the stock bin. The two sides of the feeding pipe are rotationally connected with gears, and baffles are fixed to the ends, close to the central axis of the feeding pipe, of the two gears. The molten iron silicon increasing device for blast furnace smelting production is provided with the gear and the weighing hopper, the L-shaped movable plate is driven by the air cylinder to slide, the gear and the baffles are driven by the rack to rotate, and therefore the discharging flow of silicon iron in the stock bin is adjusted by adjusting the opening degree between the two sets of baffles; and the pressure sensor in the weighing hopper can be used for metering the weight of the silicon iron, so that excessive or insufficient silicon adding can be avoided, and the silicon adding precision is improved.

Description

Technical Field

[0001] This utility model relates to the technical field of blast furnace smelting production, specifically to a device for increasing silicon content in molten iron during blast furnace smelting production. Background Technology

[0002] Pig iron produced by blast furnace smelting is divided into steelmaking pig iron and foundry pig iron. Blast furnace smelting of steelmaking pig iron can achieve a high utilization coefficient and low energy consumption. Iron silicon enhancement is a pretreatment process that adds ferrosilicon to molten iron to increase its silicon content to a predetermined value. It can save energy and increase production in blast furnaces, and also improve the quality of molten iron castings. However, existing iron silicon enhancement devices are inconvenient to measure the silicon content when adding ferrosilicon, which can easily lead to excessive or insufficient silicon addition, affecting the quality of molten iron castings. Furthermore, due to the varying sizes of ferrosilicon, existing iron silicon enhancement devices are inconvenient to process the ferrosilicon before silicon addition, making it difficult for larger ferrosilicon to melt and reduce in the smelting furnace, resulting in poor utilization. Utility Model Content

[0003] The purpose of this utility model is to provide a blast furnace smelting iron silicon-adding device to solve the problems mentioned in the background art, such as the tendency of existing blast furnace iron silicon-adding devices to add too much or too little silicon, and the difficulty in melting and reducing larger ferrosilicones in the smelting furnace.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a device for increasing silicon content in molten iron for blast furnace smelting production, comprising a workbench and gears, a support is provided at the bottom of the workbench, and a smelting furnace is provided below the workbench, a controller is provided on the surface of the workbench, and a feeding pipe is provided through the midpoint of the workbench, while a hopper is provided at the top of the feeding pipe.

[0005] Gears are rotatably connected to both sides of the feeding pipe. A baffle is fixed at one end of the two gears near the central axis of the feeding pipe, and a rack is meshed at the other end of the two gears away from the central axis of the feeding pipe. The two racks are fixed to the side wall of the L-shaped movable plate that is closer to each other. The two L-shaped movable plates are slidably connected to the left and right sides of the feeding pipe. A weighing hopper is rotatably connected to the inside of the feeding pipe, and crushing rollers are rotatably connected to the left and right sides of the bottom inside the feeding pipe.

[0006] Preferably, cylinders are provided at both ends of the outer side of the feeding pipe, and the cylinders are fixedly connected to the L-shaped movable plate.

[0007] By adopting the above technical solution, the feeding speed of ferrosilicon in the silo can be adjusted.

[0008] Preferably, a pressure sensor is installed inside the weighing hopper, and a weighing plate is installed above the pressure sensor. The pressure sensor is also electrically connected to the controller.

[0009] By adopting the above technical solution, the weight of ferrosilicon can be measured during silicon addition.

[0010] Preferably, the weighing hopper is connected to the output end of the motor, and the motor is located outside the feeding pipe.

[0011] By adopting the above technical solution, the weighing hopper can be flipped so that ferrosilicon falls into the smelting furnace.

[0012] Preferably, the outer ends of the feeding pipe are provided with driving devices, and the output end of the driving device is connected to the crushing roller.

[0013] By adopting the above technical solution, ferrosilicon can be crushed, avoiding the problem of large ferrosilicon pieces being difficult to melt.

[0014] Preferably, the bottom of the feeding pipe is provided with a splash guard, and the splash guard is conical.

[0015] By adopting the above technical solution, molten iron can be prevented from splashing out during silicon addition.

[0016] Compared with the prior art, the beneficial effects of this utility model are: the blast furnace smelting iron silicon enhancement device,

[0017] (1) It is equipped with gears and a weighing hopper. The L-shaped movable plate is driven to slide by the cylinder, and the gear and baffle are driven to rotate by the rack. The flow rate of ferrosilicon in the hopper can be adjusted by adjusting the opening between the two sets of baffles. The pressure sensor in the weighing hopper can measure the weight of ferrosilicon, so as to avoid adding too much or too little silicon and improve the accuracy of silicon addition.

[0018] (2) It is equipped with a crushing roller and a splash guard. When in use, the crushing roller is driven to rotate by the drive device on the outside of the feeding pipe, so that the crushing roller can crush the ferrosilicon. The crushed ferrosilicon can be completely melted, thereby improving the utilization rate of ferrosilicon. The splash guard at the bottom of the feeding pipe can prevent molten iron from splashing out when ferrosilicon falls into the smelting furnace, so as to shield the molten iron and improve the safety during use. Attached Figure Description

[0019] Figure 1 This is a front view structural diagram of the present invention;

[0020] Figure 2 This is a cross-sectional view of the feeding tube of this utility model;

[0021] Figure 3 This is a top view of the feeding pipe and weighing hopper of this utility model;

[0022] Figure 4 This is a schematic diagram of the L-shaped movable plate structure of this utility model.

[0023] In the diagram: 1. Workbench, 2. Support, 3. Smelting furnace, 4. Controller, 5. Feed pipe, 6. Hopper, 7. Gear, 8. Baffle, 9. L-shaped movable plate, 10. Rack, 11. Cylinder, 12. Motor, 13. Weighing hopper, 14. Pressure sensor, 15. Weighing plate, 16. Crushing roller, 17. Splash guard. Detailed Implementation

[0024] 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.

[0025] Please see Figure 1-4 This utility model provides a technical solution: a device for increasing silicon content in molten iron during blast furnace smelting, such as... Figure 1 , Figure 2 and Figure 4 As shown, a support 2 is installed at the bottom of the workbench 1, and a smelting furnace 3 is installed below the workbench 1. A controller 4 is installed on the surface of the workbench 1, and a feeding pipe 5 is installed through the midpoint of the workbench 1. A hopper 6 is installed at the top of the feeding pipe 5. Gears 7 are rotatably connected to both sides of the feeding pipe 5. A baffle 8 is fixed to one end of the two gears 7 near the central axis of the feeding pipe 5, and a rack 10 is meshed with the other end of the two gears 7 away from the central axis of the feeding pipe 5. The two racks 10 are fixed to the side wall of the L-shaped movable plate 9 that is closer together. An L-shaped movable plate 9 is slidably connected to the left and right sides of the feeding pipe 5. Cylinders 11 are provided at both ends of the outer side of the feeding pipe 5, and the cylinders 11 are fixedly connected to the L-shaped movable plate 9. In use, the cylinders 11 on the outer side of the feeding pipe 5 can be extended to drive the L-shaped movable plate 9 to slide upward. The rack 10 on the side wall of the L-shaped movable plate 9 drives the gear 7 that meshes with it to rotate, so that the gear 7 drives the baffle 8 to rotate. This can adjust the opening between the two sets of baffles 8, so as to adjust the flow rate of ferrosilicon inside the hopper 6 and improve its practicality.

[0026] like Figure 1 , Figure 2 and Figure 3As shown, the L-shaped movable plate 9 is slidably connected to the outside of the feeding pipe 5, and the weighing hopper 13 is rotatably connected to the inside of the feeding pipe 5. At the same time, crushing rollers 16 are provided at both ends of the bottom of the inside of the feeding pipe 5. The weighing hopper 13 is equipped with a pressure sensor 14, and a weighing plate 15 is provided above the pressure sensor 14. The pressure sensor 14 is electrically connected to the controller 4. After the ferrosilicon falls into the weighing hopper 13, the LC-304 pressure sensor 14 will detect the pressure signal and transmit the pressure signal to the controller 4. When the set weight is reached, the controller 4 will depressurize the cylinder 11, causing the cylinder 11 to drive the L-shaped movable plate 9 to descend. The gear 7 and the baffle 8 will rotate through the rack 10 on its side wall, so that the two sets of baffles 8 surround each other, thus stopping the feeding. This allows for accurate measurement of the amount of ferrosilicon fed.

[0027] like Figure 2 and Figure 3 As shown, the weighing hopper 13 is connected to the output end of the motor 12, and the motor 12 is located on the outside of the feeding pipe 5. When the amount of ferrosilicon inside the weighing hopper 13 reaches the required level, the controller 4 will turn on the motor 12 on the outside of the feeding pipe 5, so that the motor 12 drives the weighing hopper 13 to rotate, so as to pour out the ferrosilicon in the weighing hopper 13 for unloading.

[0028] like Figure 2 As shown, drive devices are provided at both ends of the outer side of the feeding pipe 5, and the output end of the drive device is connected to the crushing roller 16. In use, the two sets of drive devices on the outer side of the feeding pipe 5 drive the two sets of crushing rollers 16 to rotate, so that the ferrosilicon can be crushed after being poured out of the weighing hopper 13, so that the ferrosilicon reaches a suitable size so that it can be fully melted, thereby improving the complete melting and utilization of ferrosilicon.

[0029] like Figure 1 As shown, a splash guard 17 is provided at the bottom of the feeding pipe 5. The splash guard 17 is conical. When ferrosilicon falls into the smelting furnace 3, the splash guard 17 can block it, preventing molten iron from splashing out of the outside of the smelting furnace 3 and accidentally injuring the staff, thus improving the safety during use.

[0030] Working principle: When using this blast furnace smelting iron molten silicon-adding device, during the feeding process, the pressure sensor 14 inside the weighing hopper 13 can measure the weight of ferrosilicon. When the set addition weight is reached, the controller 4 will turn on the motor 12 to drive the weighing hopper 13 to rotate, pouring out the ferrosilicon in the weighing hopper 13. Then, the ferrosilicon will be crushed by two sets of crushing rollers 16 to make the ferrosilicon reach a suitable size so that the ferrosilicon can be fully melted. This completes the entire operation. The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0031] The terms “center,” “longitudinal,” “lateral,” “front,” “rear,” “left,” “right,” “vertical,” “horizontal,” “top,” “bottom,” “inner,” and “outer,” etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are merely simplified descriptions for the convenience of describing this utility model and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of this utility model.

[0032] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A device for increasing silicon content in molten iron during blast furnace smelting, comprising a workbench (1) and gears (7), characterized in that: The bottom of the workbench (1) is provided with a support (2), and a smelting furnace (3) is provided below the workbench (1). A controller (4) is provided on the surface of the workbench (1), and a feeding pipe (5) is provided through the middle point of the workbench (1). At the same time, a hopper (6) is provided on the top of the feeding pipe (5). The two sides of the feeding pipe (5) are rotatably connected to gears (7). A baffle (8) is fixed at one end of the two gears (7) near the central axis of the feeding pipe (5). A rack (10) is meshed at one end of the two gears (7) away from the central axis of the feeding pipe (5). The two racks (10) are fixed on the side wall of the L-shaped movable plate (9) that are closer to each other. The two L-shaped movable plates (9) are slidably connected to the left and right sides of the feeding pipe (5). A weighing hopper (13) is rotatably connected to the inside of the feeding pipe (5). At the same time, the crushing roller (16) is rotatably connected to the left and right sides of the bottom inside the feeding pipe (5).

2. The iron molten metal silicon enhancement device for blast furnace smelting production according to claim 1, characterized in that: The outer ends of the feeding pipe (5) are provided with cylinders (11), and the cylinders (11) are fixedly connected to the L-shaped movable plate (9).

3. The iron molten metal silicon enhancement device for blast furnace smelting production according to claim 1, characterized in that: The weighing hopper (13) is equipped with a pressure sensor (14), and a weighing plate (15) is provided above the pressure sensor (14). The pressure sensor (14) is electrically connected to the controller (4).

4. The iron molten metal silicon enhancement device for blast furnace smelting production according to claim 1, characterized in that: The weighing hopper (13) is connected to the output end of the motor (12), and the motor (12) is located on the outside of the feeding pipe (5).

5. The iron molten metal silicon enhancement device for blast furnace smelting production according to claim 1, characterized in that: The feed pipe (5) is equipped with drive devices at both ends on the outside, and the output end of the drive device is connected to the crushing roller (16).

6. The iron molten metal silicon enhancement device for blast furnace smelting production according to claim 1, characterized in that: The bottom of the feeding pipe (5) is provided with a splash guard (17), and the splash guard (17) is conical.

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