Automatic feeding device for electric furnace ash cold briquetting

Abstract

This utility model belongs to the technical field of electric furnace ash cold agglomeration feeding equipment, and particularly relates to an automatic feeding device for electric furnace ash cold agglomeration, comprising: a drying furnace, a spare material hopper on the top surface of the drying furnace, the inlet end of the spare material hopper being connected to the outlet end of a spare material structure, a uniform material spraying structure on the bottom surface of the spare material hopper, the inlet end of the uniform material spraying structure being connected to the outlet end of the spare material hopper, the outlet end of the uniform material spraying structure being located inside the drying furnace, and a discharge port being opened in the middle of the bottom surface of the drying furnace; the drying furnace and the spare material hopper are equipped with radar level gauges for measuring the stacking height of cold agglomerations. The electric furnace cold agglomeration feeding device provided by this utility model has a high degree of automation, can achieve continuous and efficient production, and improve heat utilization efficiency and production efficiency.

Description

Technical Field

[0001] This utility model belongs to the technical field of electric furnace ash cold block forming and feeding equipment, and particularly relates to an automatic feeding device for electric furnace ash cold block forming. Background Technology

[0002] Electric arc furnace (EAF) ash is dust collected by dust removal devices during the EAF steelmaking process. It contains a large amount of metal oxides, especially iron, zinc, and lead. Cold agglomeration technology, as an effective method for treating EAF ash, can solidify powdered EAF ash into blocks, facilitating transportation, storage, and recycling. This method not only improves the utilization rate of EAF ash but also controls dust pollution to a certain extent.

[0003] However, in existing electric arc furnace ash cold agglomeration processes for zinc recovery, the reduction rate can be too fast. This leads to increased demand for cold agglomeration ash, resulting in insufficient agglomeration ash accumulation in the drying furnace and uneven heating. This directly affects the stability of the quality of the cold agglomeration ash and also poses a safety risk. Furthermore, some current feeding systems on the market lack automation, making it difficult to achieve continuous and efficient production. Utility Model Content

[0004] The purpose of this invention is to provide an automatic feeding device for cold-forming electric furnace ash blocks, in order to solve the above-mentioned problems.

[0005] To achieve the above objectives, this utility model provides the following solution:

[0006] An automatic feeding device for cold-forming electric furnace ash includes: a drying furnace, a spare material bin on the top surface of the drying furnace, an inlet end of the spare material bin connected to the outlet end of a spare material structure, a uniform material spreading structure on the bottom surface of the spare material bin, an inlet end of the uniform material spreading structure connected to the outlet end of the spare material bin, the outlet end of the uniform material spreading structure located inside the drying furnace, and an outlet opening in the middle of the bottom surface of the drying furnace.

[0007] The drying oven is equipped with several first monitoring devices for detecting the stacking height of cold agglomerated ash from the electric furnace in the drying oven, and the spare material silo is equipped with a second monitoring device for detecting the stacking height of cold agglomerated ash from the electric furnace in the spare material silo.

[0008] An air inlet is provided on the lower part of the side wall of the drying oven, and an exhaust outlet is provided on the upper part of the side wall of the drying oven.

[0009] Preferably, the uniform material spreading structure includes a chute, which is rotatably connected to the bottom surface of the spare material bin, the inlet end of the chute is connected to the outlet end of the spare material bin, and the outlet end of the chute is located inside the drying oven.

[0010] The chute is connected to a chute drive structure, which is mounted on the top surface of the drying oven.

[0011] Preferably, the chute drive structure includes a drive motor, which is fixedly connected to the bottom surface of the drying oven. The output shaft of the drive motor is shaft-connected to a drive wheel, and a driven wheel is meshed with one side of the drive wheel. The driven wheel is rotatably connected to the bottom surface of the spare material bin via a column, and the driven wheel is coaxially arranged with the chute.

[0012] Preferably, the material preparation structure includes a briquetting machine, the discharge end of which is connected to the feed end of the hopper, the discharge end of the hopper is connected to the feed end of the inclined conveyor belt, and the discharge end of the inclined conveyor belt is connected to the feed end of the spare silo.

[0013] Preferably, the first monitoring device is a drying oven radar level gauge, and a plurality of the drying oven radar level gauges are installed on the inner top wall of the drying oven, and the plurality of the drying oven radar level gauges are distributed at equal intervals around the circumference.

[0014] Preferably, the second monitoring device is a backup silo radar level gauge, which is installed in the middle of the inner top wall of the backup silo.

[0015] Preferably, a spare material hopper support is fixedly connected to the top surface of the drying oven, and the spare material hopper is mounted on the spare material hopper support;

[0016] The bottom surface of the drying oven is fixedly connected to a drying oven support for supporting the drying oven.

[0017] Preferably, the spare material silo has a spare material silo inlet on one side of its top, and the discharge end of the large-angle conveyor belt extends into the spare material silo inlet.

[0018] Preferably, an automatic regulating valve is installed at the discharge port.

[0019] Compared with the prior art, the present invention has the following advantages and technical effects:

[0020] This utility model provides an automatic feeding device for cold block making in electric furnaces, which has a high degree of automation and can achieve continuous and efficient production, improving heat utilization efficiency and production efficiency. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the external structure of this utility model;

[0023] Figure 2 This is a front view of the internal structure of this utility model;

[0024] Figure 3 This is a side view of the internal structure of this utility model;

[0025] Figure 4 This is a top view of the internal structure of this utility model;

[0026] Figure 5 This is a schematic diagram of the structure of the chute of this utility model;

[0027] Figure 6 This is a schematic diagram of the chute drive structure of this utility model;

[0028] The components include: 1. Drying oven; 2. Drying oven support; 3. Air inlet; 4. Exhaust outlet; 5. Automatic regulating valve; 6. Spare hopper; 7. Drying oven radar level gauge; 8. Spare hopper support; 9. Spare hopper radar level gauge; 10. Drying oven electric furnace ash cold agglomeration stacking height; 11. Chute; 12. Spare hopper electric furnace ash cold agglomeration stacking height; 13. Inclined conveyor belt; 14. Spare hopper feed inlet; 15. Briquetting machine; 16. Hopper; 17. Drive wheel; 18. Driven wheel; 19. Column. Detailed Implementation

[0029] 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.

[0030] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0031] Reference Figures 1 to 6 This utility model discloses an automatic feeding device for cold agglomeration of electric furnace ash, including: a drying furnace 1, a spare material bin 6 on the top surface of the drying furnace 1, the feeding end of the spare material bin 6 being connected to the discharging end of a spare material structure, a uniform material spreading structure on the bottom surface of the spare material bin 6, the feeding end of the uniform material spreading structure being connected to the discharging end of the spare material bin 6, the discharging end of the uniform material spreading structure being located inside the drying furnace 1, and a discharge port being opened in the middle of the bottom surface of the drying furnace 1.

[0032] The drying oven 1 is equipped with several first monitoring devices for detecting the stacking height 10 of the electric furnace ash cold agglomeration in the drying oven, and the spare material bin 6 is equipped with a second monitoring device for detecting the stacking height 12 of the electric furnace ash cold agglomeration in the spare material bin.

[0033] An air inlet 3 is provided on the lower part of the side wall of the drying oven 1, and an exhaust outlet 4 is provided on the upper part of the side wall of the drying oven 1. High-temperature gas enters the drying oven 1 from bottom to top through the air inlet 3 and exits from the exhaust outlet 4 for the next stage of processing. The maximum drying temperature can reach 800℃.

[0034] This utility model provides an automatic feeding device for cold block making in electric furnaces, which has a high degree of automation and can achieve continuous and efficient production, improving heat utilization efficiency and production efficiency.

[0035] Further optimization of the scheme: the uniform material spreading structure includes a chute 11, which is rotatably connected to the bottom surface of the spare material bin 6. The inlet end of the chute 11 is connected to the outlet end of the spare material bin 6, and the outlet end of the chute 11 is located inside the drying oven 1.

[0036] The chute 11 is connected to a chute drive structure, which is installed on the top surface of the drying oven 1.

[0037] Further optimization of the scheme: the chute drive structure includes a drive motor, which is fixedly connected to the bottom surface of the drying oven 1. The output shaft of the drive motor is connected to a drive wheel 17, and a driven wheel 18 is meshed on one side of the drive wheel 17. The driven wheel 18 is rotatably connected to the bottom surface of the spare material bin 6 through a column 19. The driven wheel 18 is coaxially arranged with the chute 11.

[0038] The scheme is further optimized. The material preparation structure includes a briquetting machine 15. The discharge end of the briquetting machine 15 is connected to the feed end of the hopper 16. The discharge end of the hopper 16 is connected to the feed end of the inclined conveyor belt 13. The discharge end of the inclined conveyor belt 13 is connected to the feed end of the spare material bin 6.

[0039] The radar level gauge 7 of the drying oven is electrically connected to the drive motor and is used to transmit signals to the drive motor, thereby controlling the rotation speed of the chute 11.

[0040] The configuration of the steep-angle conveyor belt 13 is existing technology and will not be described in detail here. The backup hopper radar level gauge 9 is electrically connected to the steep-angle conveyor belt 13 and is used to control the conveying speed of the steep-angle conveyor belt 13.

[0041] Further optimize the scheme. The first monitoring device is a drying oven radar level gauge 7. Several drying oven radar level gauges 7 are installed on the inner top wall of the drying oven 1 and are distributed at equal intervals around the perimeter.

[0042] The radar level gauge 7 of the drying furnace is located in the east, west, south, and north directions of the drying furnace 1. By detecting the height 10 of the ash agglomeration in the electric furnace, it transmits different electromagnetic signals to the chute 11, causing the chute 11 to slow down. After time t, the height 10 of the ash agglomeration in the electric furnace approaches 6m, and the chute speed w returns to normal, thereby achieving material level control in the drying furnace 1 and improving production efficiency.

[0043] The scheme was further optimized, and the second monitoring device is a backup silo radar level gauge 9, which is installed in the middle of the inner top wall of the backup silo 6.

[0044] The radar level gauge 9 for the spare material silo is installed in the middle of the inner top wall of the spare material silo 6. By detecting the stacking height 12 of the electric furnace ash cold agglomeration in the spare material silo, different electromagnetic signals are transmitted to the steep-angle conveyor belt 13. When the stacking height 12 of the electric furnace ash cold agglomeration in the spare material silo is higher than 1.5m, the conveying speed of the steep-angle conveyor belt 13 is slowed down. This achieves material level control in the spare material silo 6 and improves production efficiency.

[0045] The scheme is further optimized by fixing a spare material hopper support 8 to the top surface of the drying oven 1, and the spare material hopper 6 is mounted on the spare material hopper support 8.

[0046] The bottom surface of the drying oven 1 is fixed with a drying oven support 2 for supporting the drying oven 1.

[0047] To further optimize the design, a spare material hopper inlet 14 is provided on one side of the top of the spare material hopper 6, and the discharge end of the large-angle conveyor belt 13 extends into the spare material hopper inlet 14.

[0048] The design was further optimized by installing an automatic regulating valve 5 at the discharge port. The dried zinc-containing cold-formed blocks are then processed through the automatic regulating valve 5.

[0049] The specific embodiments of this utility model are as follows:

[0050] Radar level gauges 7 are fixed at the top of the drying furnace 1 in four directions (east, west, south, and north) to detect the accumulation height 10 of the ash agglomeration in the electric furnace. When the accumulation height at one or more directions is lower than the set level, the radar level gauge 7 sends a signal to the drive motor, which reduces the speed of the chute 11, decreasing the material feeding speed and ensuring uniform accumulation of material within the drying furnace 1. Once the accumulation height returns to the set value, the speed of the chute 11 returns to normal. Through real-time detection and feedback from the four radar level gauges 7, automatic control of the chute 11's speed is achieved, thereby stabilizing the material level within the drying furnace 1.

[0051] Above the chute 11 is a spare silo 6. Cold-pressed electric furnace ash briquettes are transported into the spare silo 6 by a steep-angle conveyor belt 13. The radar level gauge 9 in the spare silo detects the stacking height 12 of the cold-pressed electric furnace ash briquettes. When the stacking height is higher than the set material level, the radar level gauge 9 transmits a signal to the steep-angle conveyor belt 13 to reduce the feeding speed, thereby controlling the material level in the spare silo 6 to stabilize.

[0052] In the description of this utility model, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only 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 limitations on this utility model.

[0053] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. An automatic feeding device for cold briquetting of electric furnace dust, characterized in that, include: A drying oven (1) is provided with a spare material bin (6) on the top surface of the drying oven (1). The feed end of the spare material bin (6) is connected to the discharge end of the spare material structure. The bottom surface of the spare material bin (6) is provided with a uniform material spraying structure. The feed end of the uniform material spraying structure is connected to the discharge end of the spare material bin (6). The discharge end of the uniform material spraying structure is located inside the drying oven (1). A discharge port is opened in the middle of the bottom surface of the drying oven (1). The drying oven (1) is equipped with several first monitoring devices for detecting the stacking height (10) of the electric furnace ash cold agglomeration in the drying oven, and the spare material silo (6) is equipped with a second monitoring device for detecting the stacking height (12) of the electric furnace ash cold agglomeration in the spare material silo. An air inlet (3) is provided on the lower part of the side wall of the drying oven (1), and an exhaust outlet (4) is provided on the upper part of the side wall of the drying oven (1).

2. The automatic feeding device for the cold briquetting of electric furnace dust according to claim 1, characterized in that: The uniform feeding structure includes a chute (11), which is rotatably connected to the bottom surface of the spare material bin (6). The feed end of the chute (11) is connected to the discharge end of the spare material bin (6), and the discharge end of the chute (11) is located inside the drying oven (1). The chute (11) is connected to a chute drive structure, which is installed on the top surface of the drying oven (1).

3. The automatic feeding device for the cold briquetting of electric furnace dust according to claim 2, characterized in that: The chute drive structure includes a drive motor, which is fixedly connected to the bottom surface of the drying oven (1). The output shaft of the drive motor is connected to a drive wheel (17), and a driven wheel (18) is meshed with one side of the drive wheel (17). The driven wheel (18) is rotatably connected to the bottom surface of the spare material bin (6) through a column (19). The driven wheel (18) is coaxially arranged with the chute (11).

4. The automatic feeding device for the cold briquetting of electric furnace dust according to claim 1, characterized in that: The material preparation structure includes a briquetting machine (15), the discharge end of which is connected to the feed end of a hopper (16), the discharge end of which is connected to the feed end of a large-angle conveyor belt (13), and the discharge end of which is connected to the feed end of a spare silo (6).

5. The automatic feeding device for the cold briquetting of electric furnace dust according to claim 1, characterized in that: The first monitoring device is a drying oven radar level gauge (7). Several drying oven radar level gauges (7) are installed on the inner top wall of the drying oven (1). The several drying oven radar level gauges (7) are distributed at equal intervals around the circumference.

6. The automatic feeding device for the cold briquetting of electric furnace dust according to claim 1, characterized in that: The second monitoring device is a backup silo radar level gauge (9), which is installed in the middle of the inner top wall of the backup silo (6).

7. The automatic feeding device for the cold briquetting of electric furnace dust according to claim 1, characterized in that: The top surface of the drying oven (1) is fixedly connected to a spare material hopper support (8), and the spare material hopper (6) is mounted on the spare material hopper support (8); The bottom surface of the drying oven (1) is fixed with a drying oven support (2) for supporting the drying oven (1).

8. The automatic feeding device for cold agglomeration of electric furnace ash according to claim 4, characterized in that: The spare material silo (6) has a spare material silo inlet (14) on one side of its top, and the discharge end of the large-angle conveyor belt (13) extends into the spare material silo inlet (14).

9. The automatic feeding device for the production of blocks from electric furnace dust according to claim 1, characterized in that: An automatic regulating valve (5) is installed at the discharge port.

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