Blast furnace charging system based on time sequence decoupling and ore coke collaborative adaptation

Abstract

The invention relates to the technical field of blast furnace smelting, in particular to a blast furnace charging system based on time sequence decoupling and ore coke collaborative adaptation, the blast furnace charging system comprises a basic material box, a composite ore box, an excessive compensation box and a function strengthening box, a material pushing assembly is arranged at a discharging opening in the lower end of the basic material box, and a reciprocating assembly is installed at the lower end of a hopper in the material pushing assembly. Through cooperation of the base, the hopper, the basic material box, the composite ore box, the excessive compensation box and the function strengthening box, charging time sequence reconstruction and ore coke space distribution optimization are achieved, time sequence decoupling in the charging process is achieved, and in other words, ore and coke feeding is not limited by a high-frequency low-load feeding mode of the feeding system capacity any more; and flexible adjustment is carried out according to actual requirements of the blast furnace. Meanwhile, the weight of the ore batch and the weight of the coke are dynamically matched according to the charging raw fuel condition, the precision and flexibility of blast furnace charging are further improved, and finally, the loaded materials are conveyed to a blast furnace smelting position through a rail to be subjected to follow-up machining.

Description

Technical Field

[0001] This invention relates to the field of blast furnace smelting technology, specifically to a blast furnace charging system based on time-sequence decoupling and ore-coke synergistic adaptation. Background Technology

[0002] With the continuous advancement of science and technology, the level of blast furnace ironmaking equipment is constantly improving, and blast furnace ironmaking is gradually developing rapidly towards scientific, automated, information-based, data-driven, and large-scale development. The continuous innovation and transformation of ironmaking equipment is the inexhaustible driving force for the development of blast furnace ironmaking, and it is also an inevitable requirement for steel enterprises to transform from high-energy-consuming to low-carbon operations.

[0003] In recent years, blast furnace production has been continuously strengthened, and various production indicators have been significantly improved. However, shortcomings have emerged in various supporting facilities for blast furnaces, especially the insufficient capacity of the charging trolley and charging hopper in the charging system, which is common in the industry for small and medium-sized blast furnaces. Traditional charging systems are limited by the rigid constraints of the charging system and can no longer meet the needs of high-intensity smelting in current blast furnaces. Furthermore, during charging, existing technologies often have fixed charging hoppers, resulting in uneven material distribution with the material higher in the center and lower on both sides. Summary of the Invention

[0004] The purpose of this invention is to solve the problem that the traditional material system of this device is limited by the rigid constraints of the charging system, which can no longer meet the current high-intensity smelting requirements of blast furnaces. Furthermore, in the existing technology, the hoppers are mostly fixed during the receiving process, resulting in uneven material distribution with the material being higher in the center and lower on both sides. Therefore, this invention proposes a blast furnace charging system based on time-sequence decoupling and ore-coke synergistic adaptation.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] Design a blast furnace charging system based on time-series decoupling and ore-coke synergistic adaptation, including a basic charging box, a composite ore box, an overcompensation box, and a functional enhancement box. A discharge port is fixedly installed at the lower center of the basic charging box, the composite ore box, the overcompensation box, and the functional enhancement box. A discharge valve is installed on the inner wall of the discharge port. A pushing component is provided at the lower discharge port of the basic charging box. A reciprocating component is installed at the lower end of the hopper of the pushing component.

[0007] This setup involves distributing different feed hoppers at multiple locations, allowing a coke-based framework layer (coarse-grained coke) to be loaded into the hopper, forming a highly permeable framework. Then, ore (sintered ore + pellets) is loaded, with each loading interval matching the feeding system's replenishment cycle. Next, a coke compensation layer is added to fill the gaps in the ore layer, maintaining the radial uniformity of the gas distribution. Finally, ore (sintered ore + pellets + optimized lump ore gradation) is loaded to increase the density of the ore layer and ensure the efficiency of the reduction reaction.

[0008] Preferably, the feeding assembly includes a track and a base. Rollers are rotatably connected to the four corners of the outer wall of the base. The outer walls of the rollers are in contact with the track. Connecting buckles are fixed to the center of both sides of the outer wall of the base. A hopper is distributed at the upper end of the base, and the upper part of the hopper corresponds to the leftmost discharge port.

[0009] This setup uses a track and connecting buckle installed at the base to allow the base to move above the track by connecting to an external power source via the connecting buckle.

[0010] Preferably, the basic material box, the composite ore box, the overcompensation box, and the functional enhancement box are all fixedly equipped with a feed inlet at the upper center.

[0011] Preferably, a maintenance plate is installed on the lower front end of the outer wall of the basic material box, composite ore box, overcompensation box and functional enhancement box.

[0012] This setup, by adding feed inlets and inspection plates to the basic hopper, composite ore hopper, overcompensation hopper, and functional enhancement hopper, allows for replenishment of materials inside the hoppers and regular maintenance.

[0013] Preferably, the reciprocating assembly includes a base and a slide rod one. The base is fixedly connected to the center of the inner wall of the base. A lead screw is rotatably connected to the inner wall of the base. The other side of the lead screw is fixedly connected to the output shaft of a servo motor. The outer wall of the servo motor is connected to one side of the outer wall of the base. The upper part of the outer wall of the lead screw is connected to the lead screw slider through a lead screw clamp. The upper end of the lead screw slider is fixedly connected to the hopper. The two sides of the inner wall of the lead screw slider are slidably connected to the slide rod two.

[0014] This setting controls the servo motor so that the output shaft of the servo motor can drive the lead screw to rotate. In turn, the lead screw can drive the lead screw slider to move back and forth through the lead screw chuck, which in turn can drive the hopper to move back and forth below the discharge port, ensuring the uniformity of material receiving in the hopper.

[0015] Preferably, the two ends of the outer wall of the slide rod are fixedly connected to the base through end plates, and the central sliding rod of the outer wall of the slide rod is connected to a sleeve, the upper end of which is fixedly connected to the hopper.

[0016] Preferably, the four corners of the outer walls of the basic material box, composite ore box, overcompensation box and functional enhancement box are all fixed with support feet, and the lower end of the support feet is fixed with a pad.

[0017] Preferably, the feed inlets and inspection plates of the basic feed box, composite ore box, overcompensation box, and functional enhancement box are all equipped with flange structures.

[0018] This feature provides sufficient support to the hopper by providing support feet, and the flange structure allows for quick connection to external pipeline structures.

[0019] The blast furnace charging system proposed in this invention, based on time-sequence decoupling and ore-coke synergistic adaptation, has the following advantages:

[0020] By coordinating the base, hopper, basic charging box, composite ore box, overcompensation box, and functional enhancement box, the charging sequence is reconstructed and the spatial distribution of ore and coke is optimized, achieving temporal decoupling during the charging process. This means that the feeding of ore and coke is no longer constrained by the high-frequency, low-load charging mode of the charging system, but is flexibly adjusted according to the actual needs of the blast furnace. Simultaneously, the weight of the ore batch and the weight of the coke are dynamically adapted based on the raw material conditions, further improving the accuracy and flexibility of blast furnace charging. Finally, the loaded materials are transported via rail to the blast furnace smelting section for subsequent processing.

[0021] Through the coordination between the servo motor, lead screw, lead screw slider, hopper, and discharge port, the output shaft of the servo motor can drive the lead screw to rotate. The lead screw, in turn, can drive the lead screw slider to move back and forth through the lead screw chuck, thereby causing the hopper to move back and forth below the discharge port. In this way, when receiving materials, the materials can be evenly distributed inside the hopper, and the back and forth shaking can also make the gaps between the materials tighter, allowing more materials to be loaded at once. This effectively avoids the problem in most existing technologies where the hopper is fixed during receiving, resulting in uneven material distribution with a higher center and lower sides. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the external structure of the present invention;

[0023] Figure 2 For the present invention Figure 1 A diagram of the structure viewed from below;

[0024] Figure 3 This is a partial structural diagram of the hopper in this invention;

[0025] Figure 4 For the present invention Figure 3 A diagram of the structure viewed from below;

[0026] Figure 5 For the present invention Figure 3 A schematic diagram of a local structure in the image;

[0027] Figure 6 For the present invention Figure 4 A schematic diagram of a local structure in the image;

[0028] Figure 7 This is a bottom view of the basic material box structure of the present invention;

[0029] Figure 8 For the present invention Figure 1 A schematic diagram of the structure at point I in the diagram.

[0030] In the diagram: 1. Basic material box, 2. Feed inlet, 3. Pushing assembly, 301. Roller, 302. Hopper, 303. Base, 304. Track, 305. Connecting buckle, 4. Reciprocating assembly, 401. Slide rod one, 402. Base, 403. Lead screw, 404. Lead screw slider, 405. Sleeve, 406. Servo motor, 407. End plate, 408. Slide rod two, 5. Composite ore box, 6. Over-compensation box, 7. Function enhancement box, 8. Inspection plate, 9. Pad, 10. Discharge port, 11. Support foot. Detailed Implementation

[0031] The present invention will be further described below with reference to the accompanying drawings:

[0032] See attached document Figure 1-8 In this embodiment, a blast furnace charging system based on time-series decoupling and ore-coke synergistic adaptation includes a basic material box 1, a composite ore box 5, an overcompensation box 6, and a functional enhancement box 7. A discharge port 10 is fixedly installed at the lower center of the basic material box 1, the composite ore box 5, the overcompensation box 6, and the functional enhancement box 7. A discharge valve is installed on the inner wall of the discharge port 10. The discharge valve can be opened and closed by control to discharge the material inside the box. A pushing component 3 is provided at the lower discharge port 10 of the basic material box 1. A reciprocating component 4 is installed at the lower end of the hopper 304 in the pushing component 3. A feed port 2 is fixedly installed at the upper center of the basic material box 1, the composite ore box 5, the overcompensation box 6, and the functional enhancement box 7. The feed port 2 can realize the material input process.

[0033] Inspection plates 8 are installed on the lower front end of the outer walls of the basic material box 1, composite ore box 5, over-compensation box 6, and functional enhancement box 7. Support feet 11 are fixed to the four corners of the outer walls of the basic material box 1, composite ore box 5, over-compensation box 6, and functional enhancement box 7. Pads 9 are fixed to the lower end of the support feet 11. Flange structures are installed at the feed inlets 2 and inspection plates 8 in the basic material box 1, composite ore box 5, over-compensation box 6, and functional enhancement box 7. Before use, a coke framework layer (coarse-grained skeleton coke) can be loaded into the basic material box 1, ore (sintered ore + pellets) can be loaded into the composite ore box 5, a coke compensation layer (coarse-grained skeleton coke) can be added into the over-compensation box 6, and finally, ore (sintered ore + pellets + lump ore gradation optimization) can be loaded into the functional enhancement box 7.

[0034] See attached document Figure 1-8In this embodiment, the pushing component 3 includes a track 304 and a base 303. Rollers 301 are rotatably connected to the four corners of the outer wall of the base 303. The outer wall of the rollers 301 is in contact with the track 304. The movement of the entire device is achieved by the rollers 301 rolling above the track 304. Connecting buckles 305 are fixed to the center of both sides of the outer wall of the base 303. The connecting buckles 305 can facilitate the connection of the base 303 to the hook of an external power source, driving the base 303 to move along the track 304. A hopper 302 is distributed at the upper end of the base 303. The upper part of the hopper 302 corresponds to the lower discharge port 10 of the base material box 1.

[0035] See attached document Figure 1-8 In this embodiment, the reciprocating assembly 4 includes a base 402 and a slide bar 401. The base 402 is fixedly connected to the center of the inner wall of the base 303. A lead screw 403 is rotatably connected to the inner wall of the base 402. The other side of the lead screw 403 is fixedly connected to the output shaft of a servo motor 406. The model of the servo motor 406 can be determined according to the specific application. The outer wall of the servo motor 406 is connected to one side of the outer wall of the base 402. The upper part of the outer wall of the lead screw 403 is connected to the lead screw slider 404 through a lead screw retainer. The cooperation between lever 403 and lead screw slider 404 can already be achieved in the existing technology. In specific use, it can also be replaced with other lead screw connection structures that can meet the reciprocating requirements. The upper end of lead screw slider 404 is fixedly connected to hopper 302. The two ends of the outer wall of slide rod 401 are fixedly connected to base 303 through end plate 407. The central sliding rod of the outer wall of slide rod 401 is connected to sleeve 405. Slide rod 401 can provide support for sleeve 405. The upper end of sleeve 405 is fixedly connected to hopper 302.

[0036] Working principle:

[0037] When this blast furnace charging system based on time-series decoupling and ore-coke synergistic adaptation is needed, firstly, the hopper 302 and base 303 are placed on the track 304, and a coke framework layer (coarse-grained skeleton coke) is loaded into the basic charging box 1, ore (sinter + pellets) is loaded into the composite ore box 5, a coke compensation layer (coarse-grained skeleton coke) is added to the transition compensation box 6, and finally, ore (sinter + pellets + lump ore gradation optimization) is loaded into the functional enhancement box 7. Then, the base 303 is connected to an external power source via the connecting buckle 305. Subsequently, the base 303 is controlled to drive the hopper 302 to move sequentially below the basic charging box 1, composite ore box 5, transition compensation box 6, and functional enhancement box 7. The system moves and stops at the corresponding discharge port 10 for layered loading. This case differs from the traditional loading system, decoupling the loading sequence. The loading volume of the mine car and the ore-coke loading system are designed in stages according to the time sequence: basic material layer → composite ore layer → transition compensation layer → functional enhancement layer. First, a coke framework layer (coarse-grained skeleton coke) is loaded into hopper 302 to form a highly permeable skeleton; then, ore (sintered ore + pellets) is loaded, with each interval matching the feeding system's replenishment cycle; then, a coke compensation layer is added to fill the gaps in the ore layer and maintain the radial uniformity of gas distribution; finally, ore (sintered ore + pellets + lump ore gradation optimization) is loaded to improve the density of the ore layer and ensure the efficiency of the reduction reaction.

[0038] The coke load capacity of the base layer and the transition compensation layer is the same, and the coke load capacity is determined according to the coke load (O / C) set by the blast furnace process. Through charging sequence reconstruction and optimization of ore and coke spatial distribution, the timing decoupling during the charging process is achieved. That is, the charging of ore and coke is no longer subject to the high-frequency, low-load charging mode of the charging system capacity, but is flexibly adjusted according to the actual needs of the blast furnace. At the same time, the weight of the ore batch and the weight of coke are dynamically adapted according to the raw material conditions entering the furnace, further improving the accuracy and flexibility of blast furnace charging. Finally, the loaded materials are transported to the blast furnace smelting section via track 304 for subsequent processing.

[0039] Specifically, when the hopper 302 receives material at the discharge port 10 located below the basic material box 1, composite ore box 5, overcompensation box 6, and functional enhancement box 7, the user can control the servo motor 406 so that the output shaft of the servo motor 406 can drive the lead screw 403 to rotate. In turn, the lead screw 403 can drive the lead screw slider 404 to move back and forth through the lead screw clamp, thereby driving the hopper 302 to move back and forth below the discharge port 10. In this way, when receiving material, the material can be evenly distributed inside the hopper 302, and the back and forth shaking can also make the gaps between the materials tighter, allowing more material to be loaded at once. This effectively avoids the problem in most existing technologies where the hopper is fixed during receiving, resulting in uneven material distribution with the center position higher and the sides lower.

[0040] Although the present invention has been illustrated and described with reference to preferred embodiments, those skilled in the art will understand that various changes in form and detail are possible within the scope of the claims.

Claims

1. A blast furnace charging system based on timing decoupling and collaborative adaptation with ore coke, comprising a basic material box (1), a composite ore box (5), an overcompensation box (6) and a function enhanced box (7), characterized in that: The lower end center of the base tank (1), the composite ore tank (5), the over-compensation tank (6) and the function enhanced tank (7) is fixedly installed with a discharge port (10), the inner wall of the discharge port (10) is installed with a discharge valve, the lower end discharge port (10) of the base tank (1) is provided with a pushing assembly (3), and the lower end of the hopper (304) in the pushing assembly (3) is installed with a reciprocating assembly (4).

2. Blast furnace charging system based on timing decoupling and adaptation with ore coke synergy in accordance with claim 1, characterized by: The pushing assembly (3) comprises a track (304) and a base (303), the outer wall of the base (303) is rotatably connected with a roller (301) at four corners, the outer wall of the roller (301) is attached to the track (304), the outer wall of the base (303) is fixedly connected with a connecting buckle (305) at the center of both sides, and the upper end of the base (303) is distributed with a hopper (302), and the upper side of the hopper (302) corresponds to the leftmost discharge port (10).

3. The blast furnace charging system based on timing decoupling and adaptation with ore coke synergy of claim 1, wherein: The upper end center of the base tank (1), the composite ore tank (5), the over-compensation tank (6) and the function enhanced tank (7) is fixedly installed with an inlet (2).

4. The blast furnace charging system based on timing decoupling and adaptation with ore coke synergy of claim 1, wherein: The outer wall of the base tank (1), the composite ore tank (5), the over-compensation tank (6) and the function enhanced tank (7) is installed with a maintenance plate (8) below the front end.

5. The blast furnace charging system based on timing decoupling and adaptation with ore coke synergy of claim 1, wherein: The reciprocating assembly (4) comprises a base (402) and a slide rod one (401), the inner wall center of the base (402) is fixedly connected to the base (303), the inner wall of the base (402) is rotatably connected with a lead screw (403), the other side of the lead screw (403) is fixedly connected with the output shaft of a servo motor (406), the outer wall of the servo motor (406) is connected with one side of the outer wall of the base (402), the outer wall of the lead screw (403) is connected with a lead screw clamping column and a lead screw block (404) through the lead screw block (404) above, the upper end of the lead screw block (404) is fixedly connected with the hopper (302), and the inner wall of the lead screw block (404) is slidably connected with a slide rod two (408).

6. Blast furnace charging system based on timing decoupling and adaptation with ore coke synergy in accordance with claim 5, characterized by: The outer wall of the slide rod one (401) is fixedly connected with the base (303) through an end plate (407) at both ends of the outer wall, and the outer wall center of the slide rod one (401) is slidably connected with a sleeve (405), and the upper end of the sleeve (405) is fixedly connected with the hopper (302).

7. The blast furnace charging system based on timing decoupling and adaptation with ore coke synergy of claim 1, wherein: The outer wall of the base tank (1), the composite ore tank (5), the over-compensation tank (6) and the function enhanced tank (7) are all fixedly connected with support feet (11) at four corners, and the lower end of the support feet (11) is fixedly connected with a pad (9).

8. The blast furnace charging system based on timing decoupling and adaptation with ore coke synergy of claim 1, wherein: The inlet (2) and the maintenance plate (8) of the base tank (1), the composite ore tank (5), the over-compensation tank (6) and the function enhanced tank (7) are all installed with a flange structure.

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