FeO content control device for sintered ore production

Abstract

The utility model relates to the technical field of feeding devices, in particular to a FeO content control device for sintered ore production. According to the technical scheme, the device comprises a screen hopper, a mixing barrel, a flow guide hopper, a supporting ring and a mounting ring, springs distributed in an annular array mode are connected between the mounting ring and the supporting ring, a vibration motor is arranged at the upper end of the mounting ring, bearing supports distributed symmetrically are arranged at the upper end of the mounting ring, and a discharging motor is arranged at one end of each bearing support. A screen plate is arranged in the screen hopper, a conveying pipe is arranged at the lower end of the screen hopper, a rotating shaft which is rotationally installed in the bearing support and penetrates through the conveying pipe is arranged at the output end of the discharging motor, and a hose is arranged at the lower end of the conveying pipe. According to the utility model, the raw materials containing FeO are sieved in the sieve hopper, the specifications of the raw materials containing FeO are unified, and the FeO content of the sintered ore is better controlled after the raw materials of the sintered ore are mixed.

Description

Technical Field

[0001] This utility model relates to the field of feeding device technology, and in particular to a device for controlling the FeO content in sinter production. Background Technology

[0002] The high energy of the molten droplets in sinter plays a decisive role in the permeability of the lower molten zone of the blast furnace. The grade, basicity, FeO, and gangue content of the sinter significantly influence blast furnace smelting, including output, fuel ratio, pig iron quality, and cost. The size of hematite can affect the FeO content in sinter. Different sizes of hematite have different iron oxide contents, thus affecting the FeO content of the sinter. Generally, finer-grained hematite, such as larger medium and coarse-grained hematite, has a relatively higher FeO content, while smaller-grained hematite, such as fine powder hematite, may contain a lower FeO content.

[0003] Therefore, when selecting hematite for the sintering process, simply using load-bearing cannot improve the accuracy of FeO content in the sinter, affecting the accuracy of FeO content control during the sintering process. To address this, we propose a FeO content control device for sinter production to solve the existing problems. Utility Model Content

[0004] The purpose of this invention is to address the problems existing in the background technology by proposing a device for controlling the FeO content in sinter production.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a FeO content control device for sinter production, comprising a screen hopper, a mixing cylinder, a guide hopper, a support ring, and a mounting ring. A spring arranged in a circular array is connected between the mounting ring and the support ring. A vibration motor is installed at the upper end of the mounting ring, and symmetrically distributed bearing supports are installed at the upper end of the mounting ring. A discharge motor is installed at one end of each bearing support. A screen plate is installed inside the screen hopper, and a conveying pipe is installed at the lower end of the screen hopper. A rotating shaft, rotatably mounted inside the bearing support and passing through the conveying pipe, is installed at the output end of the discharge motor. A flexible hose is installed at the lower end of the conveying pipe.

[0006] When using the FeO content control device for sinter production in this solution, FeO-containing hematite is conveyed to the screen hopper. The vibrating motor operates, and the oscillating force of the vibrating motor drives the spring to vibrate, which in turn causes the mounting ring to vibrate on the support ring. Small-sized FeO-containing hematite passes through the screen plate, while large-sized FeO-containing hematite is intercepted. The FeO-containing hematite is then conveyed to the mixing drum. The mixing motor operates, driving the mixing rod to rotate, which in turn drives the stirring shaft to mix various sintered ores. The mixed raw material is then driven by a hydraulic rod to lower the bottom cover, causing the raw material inside the mixing drum to be discharged. It is then conveyed to the conveyor belt through the guide bucket. The unloading motor drives the rotating shaft to rotate, and through the connection between the rotating shaft and the conveying pipe, it causes the screen hopper to flip. The FeO-containing hematite intercepted inside the screen hopper is poured into the material box, thus collecting the non-compliant FeO-containing hematite.

[0007] Preferably, a mounting frame is provided below the sieve hopper, and a mixing cylinder is provided inside the mounting frame. The outer wall of the support ring is provided with support rods arranged in a ring array and connected to the mounting frame. The mounting frame supports the support ring and the mixing cylinder, and the support ring is fixed in the mounting frame at multiple points by the support rods.

[0008] Preferably, the outer wall of the hose is provided with fixing rods arranged in a ring array and connected to the support ring. The hose is fixed inside the support ring by the fixing rods.

[0009] Preferably, a material bin is provided on one side of the screen hopper, a guide plate is provided on the lower inner wall of the material bin, a discharge trough is provided on one side of the lower end of the material bin, and a sealing plate is provided inside the lower end of the discharge trough. Hematite containing FeO in the material bin is conveyed to the discharge trough through the guide plate, and the discharge trough is opened and closed by the sealing plate.

[0010] Preferably, the mixing cylinder has a bottom cover at its lower end, and the inner wall of the upper end of the bottom cover has a guide surface. Both ends of the mixing cylinder are equipped with hydraulic rods with telescopic ends connected to the upper side of the bottom cover. The bottom cover controls the opening and closing of the lower end of the mixing cylinder, guides the raw materials inside the mixing cylinder to the outside through the guide surface, and drives the hydraulic rods to move the bottom cover longitudinally.

[0011] Preferably, a mixing motor is provided at the lower end of the bottom cover, and a bearing seat is embedded inside the bottom cover. A stirring shaft is provided at the upper end of the mixing motor and rotatably inserted into the bearing seat. The outer wall of the stirring shaft is provided with mixing rods arranged in a ring array. When the mixing motor operates, it drives the stirring shaft to rotate inside the bearing seat, and the stirring shaft is rotatably supported, which in turn drives the mixing rods to rotate.

[0012] Preferably, a guide hopper fixed inside the mounting frame is sleeved on the lower outer side of the mixing cylinder, and a discharge port is provided at the lower end of the guide hopper. The guide hopper guides the raw material discharged from the mixing cylinder and outputs it through the discharge port.

[0013] Preferably, the lower end of the mounting frame is equipped with a conveyor belt located below the discharge port, the upper end of the mounting ring has through holes arranged in a circular array, and the upper end of the support ring has a guide rod located inside a spring and slidably inserted into the through holes. Raw materials output through the discharge port are received by the conveyor belt.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] 1. In the sintering process, this utility model addresses the issue of FeO content in hematite. During sintering, the FeO-containing hematite is screened to standardize its specifications. This allows for better calculation of the internal FeO content of the FeO-containing hematite within the screening range, leading to more precise control of the FeO content in the sinter when sintered with raw materials such as ore, coke powder, and fuel. Attached Figure Description

[0016] Figure 1 This is a front-view three-dimensional structural diagram of the present invention;

[0017] Figure 2 This is a top-view three-dimensional structural diagram of the present invention;

[0018] Figure 3 This is a schematic diagram of the three-dimensional structure of the sieve bucket of this utility model in cross-section.

[0019] Figure 4 This is a three-dimensional cross-sectional view of the material bin of this utility model;

[0020] Figure 5 This is a three-dimensional cross-sectional view of the guide bucket of this utility model.

[0021] Reference numerals: 1. Screen hopper; 2. Material box; 3. Mounting frame; 4. Mixing cylinder; 5. Conveyor belt; 6. Guide hopper; 7. Discharge trough; 8. Hydraulic rod; 9. Discharge port; 10. Conveying pipe; 11. Screen plate; 12. Unloading motor; 13. Bearing bracket; 14. Guide rod; 15. Through hole; 16. Spring; 17. Support rod; 18. Vibrating motor; 19. Hoses; 20. Fixing rod; 21. Support ring; 22. Mounting ring; 23. Rotating shaft; 24. Sealing plate; 25. Guide plate; 26. Mixing rod; 27. Mixing motor; 28. Guide surface; 29. ​​Bottom cover; 30. Bearing seat; 31. Stirring shaft. Detailed Implementation

[0022] 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.

[0023] like Figures 1-5 As shown, the present invention proposes a device for controlling the FeO content in sinter production, comprising a screen hopper 1, a mixing cylinder 4, a guide hopper 6, a support ring 21, and an mounting ring 22. A spring 16 arranged in a ring array is connected between the mounting ring 22 and the support ring 21. A vibration motor 18 is provided at the upper end of the mounting ring 22, and a symmetrically distributed bearing bracket 13 is provided at the upper end of the mounting ring 22. A screen plate 11 is provided inside the screen hopper 1, and a conveying pipe 10 is provided at the lower end of the screen hopper 1. A flexible hose 19 is provided at the lower end of the conveying pipe 10.

[0024] The outer wall of the hose 19 is provided with fixing rods 20 arranged in a ring array and connected to the support ring 21;

[0025] The upper end of the mounting ring 22 has through holes 15 arranged in a ring array, and the upper end of the support ring 21 has a guide rod 14 located inside the spring 16 and slidably inserted into the through holes 15.

[0026] Based on the implementation steps of Example 1: Hematite with FeO content in sinter production is screened by using a vibrating motor 18 and a sieve plate 11. Hematite with FeO content that does not meet the specifications is intercepted, while smaller-sized hematite with FeO content that is easy to calculate is conveyed through the sieve plate 11. This allows for adjustment of hematite of different specifications and precise control of FeO content, ensuring that the FeO content of the final sinter meets the requirements.

[0027] like Figures 1-5 As shown, compared with Embodiment 1, the FeO content control device for sinter production proposed in this utility model further includes: a discharge motor 12 is provided at one end of the bearing bracket 13, and a rotating shaft 23 is provided at the output end of the discharge motor 12, which is rotatably installed inside the bearing bracket 13 and passes through the conveying pipe 10.

[0028] A mounting frame 3 is provided below the sieve hopper 1. A mixing cylinder 4 is provided inside the mounting frame 3. Support rods 17 arranged in a ring array and connected to the mounting frame 3 are provided on the outer wall of the support ring 21.

[0029] A material box 2 is provided on one side of the screen bucket 1. A guide plate 25 is provided on the inner wall of the lower end of the material box 2. A discharge trough 7 is provided on one side of the lower end of the material box 2. A sealing plate 24 is provided inside the lower end of the discharge trough 7.

[0030] The mixing cylinder 4 is provided with a bottom cover 29 at the lower end, and a guide surface 28 is provided on the inner wall of the upper end of the bottom cover 29. Both ends of the mixing cylinder 4 are provided with a hydraulic rod 8 with a telescopic end connected to the upper side of the bottom cover 29.

[0031] A mixing motor 27 is provided at the lower end of the bottom cover 29. A bearing seat 30 is embedded inside the bottom cover 29. A stirring shaft 31 is provided at the upper end of the mixing motor 27 and is rotatably inserted into the bearing seat 30. Mixing rods 26 arranged in a ring array are provided on the outer wall of the stirring shaft 31.

[0032] A guide bucket 6 fixed inside the mounting frame 3 is sleeved on the outer side of the lower end of the mixing cylinder 4. A conveyor belt 5 located below the discharge port 9 is provided inside the lower end of the guide mounting frame 3.

[0033] In this embodiment, after the hematite with FeO content is screened, the rotating shaft 23 is driven to rotate by the unloading motor 12, which drives the screen bucket 1 to flip. The material intercepted inside the screen bucket 1 is collected through the material box 2. The qualified hematite with FeO content enters the mixing cylinder 4. It is worth noting that a weighing module needs to be installed between the mixing cylinder 4 and the mounting frame 3 to weigh the screened hematite with FeO content, and then mix it with other raw materials before entering the mixing cylinder 4. The mixing rod 26 is used to stir and mix the raw materials. The raw materials are received by the conveyor belt 5 and transported to the sintering furnace for sintering processing.

[0034] The above specific embodiments are merely several preferred embodiments of this utility model. Based on the technical solution of this utility model and the relevant teachings of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.

[0035] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A device for controlling FeO content in sinter production, comprising a screen hopper (1), a mixing cylinder (4), a guide hopper (6), a support ring (21), and an mounting ring (22), characterized in that: A spring (16) arranged in a ring array is connected between the mounting ring (22) and the support ring (21). A vibration motor (18) is provided at the upper end of the mounting ring (22). A symmetrically distributed bearing bracket (13) is provided at the upper end of the mounting ring (22). A discharge motor (12) is provided at one end of the bearing bracket (13). A screen plate (11) is provided inside the screen bucket (1). A conveying pipe (10) is provided at the lower end of the screen bucket (1). A rotating shaft (23) is rotatably installed inside the bearing bracket (13) and passes through the conveying pipe (10) at the output end of the discharge motor (12). A flexible hose (19) is provided at the lower end of the conveying pipe (10).

2. The FeO content control device for sinter production according to claim 1, characterized in that: A mounting frame (3) is provided below the sieve hopper (1), and a mixing cylinder (4) is provided inside the mounting frame (3). Support rods (17) arranged in a ring array and connected to the mounting frame (3) are provided on the outer wall of the support ring (21).

3. The FeO content control device for sinter production according to claim 1, characterized in that: The outer wall of the hose (19) is provided with fixed rods (20) arranged in a ring array and connected to the support ring (21).

4. The FeO content control device for sinter production according to claim 1, characterized in that: A material box (2) is provided on one side of the screen bucket (1). A guide plate (25) is provided on the inner wall of the lower end of the material box (2). A discharge trough (7) is provided on one side of the lower end of the material box (2). A sealing plate (24) is provided inside the lower end of the discharge trough (7).

5. The FeO content control device for sinter production according to claim 2, characterized in that: The mixing cylinder (4) is provided with a bottom cover (29) at the lower end, and a guide surface (28) is provided on the inner wall of the upper end of the bottom cover (29). Both ends of the mixing cylinder (4) are provided with hydraulic rods (8) with telescopic ends connected to the upper side of the bottom cover (29).

6. The FeO content control device for sinter production according to claim 5, characterized in that: A mixing motor (27) is provided at the lower end of the bottom cover (29). A bearing seat (30) is embedded inside the bottom cover (29). A stirring shaft (31) is provided at the upper end of the mixing motor (27) and is rotatably inserted into the bearing seat (30). A mixing rod (26) arranged in a ring array is provided on the outer wall of the stirring shaft (31).

7. The FeO content control device for sinter production according to claim 2, characterized in that: The mixing cylinder (4) is fitted with a guide bucket (6) fixed inside the mounting frame (3) on the outer side of the lower end, and the guide bucket (6) is provided with a discharge port (9) at the lower end.

8. The FeO content control device for sinter production according to claim 7, characterized in that: The mounting bracket (3) has a conveyor belt (5) located below the discharge port (9) inside its lower end. The mounting ring (22) has through holes (15) arranged in a ring array inside its upper end. The support ring (21) has a guide rod (14) located inside the spring (16) and slidably inserted into the through hole (15) inside its upper end.

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