CN223240102U - A blast furnace anti-splash residual iron discharge device - Google Patents
A blast furnace anti-splash residual iron discharge deviceInfo
- Publication number
- CN223240102U CN223240102U CN202422576057.8U CN202422576057U CN223240102U CN 223240102 U CN223240102 U CN 223240102U CN 202422576057 U CN202422576057 U CN 202422576057U CN 223240102 U CN223240102 U CN 223240102U
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- Prior art keywords
- residual iron
- fixedly connected
- iron
- main beam
- blast furnace
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
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Abstract
本实用新型涉及高炉残铁排放技术领域，具体地说是一种高炉防喷溅残铁排放装置。本实用新型包括炉体，所述炉体的一侧连通固接有框架主梁，所述框架主梁的顶部固接有盖板，所述盖板和框架主梁之间形成残铁沟，所述残铁沟呈上大下小的梯形；通过残铁沟、第一支架和第二支架的配合，通过设置第一支架和第二支架，使得框架主梁坡度为3.6°，残铁沟伸长至第一铁轨和第二铁轨的位置，两条铁轨上的铁水罐同时接收铁水，交替更换，确保始终有一个铁水罐在受铁，待残铁全部放出后，拉至炼钢进行冶炼；两条铁轨线同时出铁，加快出铁的效率，地面铺设较厚的黄沙，地面水管和仪表箱砌耐火砖和喷涂料保护，防止铁水飞溅，烧坏设备设施。
The utility model relates to the technical field of blast furnace residual iron discharge, specifically a blast furnace residual iron discharge device to prevent splashing. The utility model includes a furnace body, one side of the furnace body is connected and fixedly connected to a frame main beam, the top of the frame main beam is fixedly connected to a cover plate, a residual iron groove is formed between the cover plate and the frame main beam, and the residual iron groove is trapezoidal in shape with a larger upper portion and a smaller lower portion; through the cooperation of the residual iron groove, a first bracket and a second bracket, by setting the first bracket and the second bracket, the slope of the frame main beam is 3.6 degrees, the residual iron groove extends to the position of the first rail and the second rail, the molten iron tanks on the two rails receive molten iron at the same time, and are replaced alternately to ensure that there is always a molten iron tank receiving iron, and after all the residual iron is discharged, it is pulled to the steelmaking for smelting; the two rails simultaneously tap iron to speed up the tapping efficiency, the ground is paved with thick yellow sand, and the ground water pipes and instrument boxes are protected by refractory bricks and spray coating to prevent molten iron from splashing and burning equipment and facilities.
Description
Technical Field
The utility model relates to the technical field of blast furnace residual iron discharge, in particular to a device for preventing splashing residual iron of a blast furnace.
Background
When the blast furnace is overhauled, the furnace shell is cut after the furnace is stopped, a local cooling wall is removed, residual iron which is not discharged through a tap hole at the bottom of a hearth is discharged, the position of the residual iron is called a tap hole, the opening position of the tap hole and the arrangement of a residual iron runner are key to success or failure of discharging residual iron, more residual iron can be discharged more effectively, so that residual molten iron in the furnace is less, the formation of a residual dead iron layer is better, the subsequent blast furnace overhauling work is directly influenced, and even the whole construction period of blast furnace overhauling is influenced.
One chinese patent with publication number CN202272894U discloses a blast furnace scrap iron runner, the scrap iron runner adopts a concrete pouring groove, a slow flow gate is arranged at the turning position of the scrap iron runner, and an anhydrous stemming cushion layer is arranged at the front end runner of the scrap iron runner. The liquid level of the molten iron in the residual iron runner is relatively reduced, so that the discharged molten iron can be ensured to be aligned to the torpedo tank opening. In addition, the slow flow gate is additionally arranged at the turning part of the scrap iron runner, so that the flow speed of molten iron can be effectively reduced, the parabolic length of molten iron when the molten iron is separated from a runner nozzle is shortened, and the molten iron can directly enter the torpedo tank, thereby avoiding the accident that the molten iron falls on the ground to burn out a railway or the torpedo tank, improving the safety coefficient of equipment and personnel, reducing the accident loss and the workload of treatment, reducing the labor intensity of workers and improving the working environment. Meanwhile, the time of the sand discharge port can be obviously shortened by more than one time.
In the prior art, the method is suitable for small and medium-sized blast furnaces, but cannot meet the requirement of discharging residual iron of large-sized blast furnaces with the grade of more than 4000m < 3 >, and because the residual iron remained in a hearth is 1200-2500 tons, the design and arrangement of a residual iron groove are very important, the selection of the position for discharging the residual iron and the residual iron groove are not specially designed, and the characteristic of larger residual iron of the large-sized blast furnaces cannot be met, so that the follow-up maintenance progress is influenced, and serious potential safety hazards exist.
Therefore, a blast furnace splash-proof residual iron discharging device is proposed to solve the above problems.
Disclosure of utility model
Therefore, the utility model aims to solve the technical problems that the selection of the position for placing the residual iron and the residual iron runner in the prior art are not specially designed, and the characteristic of large residual iron of a medium-and-large-sized blast furnace cannot be met, so that the follow-up maintenance progress is influenced, and serious potential safety hazards exist.
In order to solve the technical problems, the utility model provides a device for preventing the blast furnace from splashing residual iron discharge.
In one embodiment of the utility model, the furnace comprises a furnace body, wherein one side of the furnace body is fixedly connected with a frame girder in a communicating way, the top of the frame girder is fixedly connected with a cover plate, a residual iron groove is formed between the cover plate and the frame girder, the residual iron groove is in a trapezoid shape with a big top and a small bottom, the bottom of the frame girder is sequentially fixedly connected with a first bracket and a second bracket, the first bracket is higher than the second bracket, the gradient between the bottom of the frame girder and the ground is 3.6 degrees, the bottom of the frame girder is sequentially fixedly connected with a first runner and a second runner, a second rail is arranged below the first runner, and a first rail is arranged below the second runner.
In one embodiment of the utility model, a first protective layer is fixedly connected to the inner wall of the first nozzle, a second protective layer is fixedly connected to the inner wall of the second nozzle, the first protective layer and the second protective layer are both made of refractory clay paint, and the tops of the first protective layer and the second protective layer are both communicated with the residual iron runner.
In one embodiment of the utility model, a first sleeve is fixedly connected to the side wall adjacent to the first flow nozzle, a second sleeve is fixedly connected to the side wall adjacent to the second flow nozzle, an electric push rod is fixedly connected to the bottom of the frame main beam, a connecting plate is fixedly connected to the output end of the electric push rod, a flashboard is fixedly connected to the bottom of the connecting plate, two ends of the flashboard are respectively and slidably connected in the first sleeve and the second sleeve, two ends of the flashboard are respectively matched with the first sleeve and the second sleeve, and a water-free cement foam layer is arranged in the flashboard.
In one embodiment of the utility model, the top of the cover plate is fixedly connected with a slow flow plate, and the height of the slow flow plate is greater than half of the height of the residual iron runner.
In one embodiment of the utility model, a refractory brick layer is laid on the top inner wall of the frame girder, and a castable layer is laid on top of the refractory brick layer.
In one embodiment of the utility model, the castable layer is provided with reinforcing ribs which are respectively connected with the tops of the first bracket and the second bracket.
In one embodiment of the utility model, a protective cover is fixedly connected to one side wall of the cover plate, and the inner wall of the protective cover is made of high-temperature resistant materials.
In one embodiment of the utility model, six first hot-metal cans are connected on the top of the first rail in a sliding manner, six second hot-metal cans are connected on the top of the second rail in a sliding manner, the first hot-metal cans are respectively matched with the second flow nozzles, and the second hot-metal cans are respectively matched with the first flow nozzles.
Compared with the prior art, the technical scheme of the utility model has the following advantages:
according to the anti-splashing residual iron discharging device for the blast furnace, through the cooperation of the residual iron ditch, the first support and the second support, the gradient of the frame main beam is 3.6 degrees through the arrangement of the first support and the second support, the residual iron ditch stretches to the positions of the first rail and the second rail, molten iron tanks on the two rails simultaneously receive molten iron and are alternately replaced, so that one molten iron tank is always enabled to receive iron, after the residual iron is completely discharged, the molten iron tank is pulled to steelmaking for smelting, the two iron rails simultaneously discharge iron, the iron discharging efficiency is improved, thicker yellow sand is paved on the ground, and a ground water pipe and an instrument box are protected by refractory bricks and spray paint, so that the molten iron is prevented from splashing and equipment facilities are burnt.
According to the anti-splashing residual iron discharging device for the blast furnace, through the cooperation of the first runner, the second runner and the flashboard, when the first molten iron tank on the first rail is received, the electric push rod is started, the output end of the electric push rod drives the connecting plate to move rightwards, the connecting plate drives the flashboard to move, the flashboard slides in the second sleeve to leave the second runner, the other end of the flashboard seals the first runner, molten iron flows from the second runner to the first molten iron tank, then when the first molten iron tank on the second rail is received, the electric push rod drives the flashboard to move to the second runner through the connecting plate, the second runner is sealed, molten iron flows out from the first runner to the second molten iron tank, and the reciprocating movement is realized.
Drawings
In order that the contents of the present utility model may be more clearly understood, the present utility model will be further described in detail with reference to specific embodiments thereof with reference to the accompanying drawings.
FIG. 1 is a perspective view of the present utility model;
FIG. 2 is a perspective view of a frame main beam of the present utility model;
FIG. 3 is a perspective view of a section of a scrap iron runner in accordance with the present utility model;
FIG. 4 is a perspective view of a shutter plate in the present utility model;
FIG. 5 is a cross-sectional view of a frame main beam of the present utility model;
The specification reference numerals indicate that 1, a furnace body, 2, a first bracket, 3, a second bracket, 4, a cover plate, 5, a protective cover, 6, a frame girder, 7, a first runner, 8, a first protective layer, 9, a second runner, 10, a second protective layer, 11, a flashboard, 12, a scrap iron ditch, 13, a slow flow plate, 14, a connecting plate, 15, an electric push rod, 16, a second sleeve, 17, a first sleeve, 18, a pouring material layer, 19, a refractory brick layer, 20, reinforcing ribs, 21, a first rail, 22, a first hot metal ladle, 23, a second rail, 24 and a second hot metal ladle.
Detailed Description
The present utility model will be further described with reference to the accompanying drawings and specific examples, which are not intended to be limiting, so that those skilled in the art will better understand the utility model and practice it.
Referring to fig. 1-5, the utility model discloses a blast furnace splash-proof residual iron discharging device, which comprises a furnace body 1, wherein one side of the furnace body 1 is fixedly connected with a frame main beam 6 in a communicating way, the top of the frame main beam 6 is fixedly connected with a cover plate 4, a residual iron groove 12 is formed between the cover plate 4 and the frame main beam 6, the residual iron groove 12 is in a trapezoid shape with a big upper part and a small lower part, a first bracket 2 and a second bracket 3 are fixedly connected at the bottom of the frame main beam 6 in sequence, the first bracket 2 is higher than the second bracket 3, the gradient between the bottom surface of the frame main beam 6 and the ground is 3.6 degrees, the bottom of the frame main beam 6 is fixedly connected with a first flow nozzle 7 and a second flow nozzle 9 in sequence, a second rail 23 is arranged below the first flow nozzle 7, and a first rail 21 is arranged below the second flow nozzle 9.
The selection of the position for placing the residual iron and the residual iron runner 12 in the prior art are not specially designed, and the characteristic of large residual iron content of a medium-and-large-sized blast furnace can not be met, so that the subsequent overhaul progress is influenced, and serious potential safety hazards exist; during operation, according to the analysis erosion condition of the hearth bottom temperature, the erosion position of the hearth is determined to be locally positioned at the upper part of the 5 th layer carbon brick, the gradient of the frame main beam 6 is 3.6 degrees through the arrangement of the first bracket 2 and the second bracket 3, the residual iron runner 12 stretches to the positions of the first rail 21 and the second rail 23, molten iron tanks on the two rails simultaneously receive molten iron and are alternately replaced, so that one molten iron tank is ensured to be always subjected to iron, and after all residual iron is discharged, the molten iron tank is pulled to steelmaking for smelting.
Further, as shown in fig. 3, the inner wall of the first nozzle 7 is fixedly connected with a first protection layer 8, the inner wall of the second nozzle 9 is fixedly connected with a second protection layer 10, the first protection layer 8 and the second protection layer 10 are both made of refractory clay paint, and the tops of the first protection layer 8 and the second protection layer 10 are both communicated with a residual iron runner 12.
In operation, by providing a protective layer of refractory clay on the inner walls of the first nozzle 7 and the second nozzle 9, molten iron is prevented from corroding the first nozzle 7 and the second nozzle 9, and the number of times of replacement of the first nozzle 7 and the second nozzle 9 is reduced.
Further, as shown in fig. 3 and 4, a first sleeve 17 is fixedly connected to the side wall adjacent to the first flow nozzle 7 and a second sleeve 16 is fixedly connected to the side wall adjacent to the second flow nozzle 9 and a second sleeve 16 is fixedly connected to the side wall adjacent to the first flow nozzle 7, an electric push rod 15 is fixedly connected to the bottom of the frame main beam 6, a connecting plate 14 is fixedly connected to the output end of the electric push rod 15, a gate plate 11 is fixedly connected to the bottom of the connecting plate 14, two ends of the gate plate 11 are respectively and slidably connected to the first sleeve 17 and the second sleeve 16, two ends of the gate plate 11 are respectively matched with the first sleeve 17 and the second sleeve 16, and a water-free foam mud layer is arranged in the gate plate 11.
In order to realize alternate receiving of molten iron, when a first molten iron tank 22 on a first rail 21 receives molten iron, an electric push rod 15 is started, the output end of the electric push rod 15 drives a connecting plate 14 to move rightwards, the connecting plate 14 drives a gate plate 11 to move, the gate plate 11 slides in a second sleeve 16 to leave a second runner nozzle 9, the other end seals the first runner nozzle 7, molten iron flows from the second runner nozzle 9 to the first molten iron tank 22, then when a first second molten iron tank 24 on a second rail 23 receives molten iron, the electric push rod 15 drives the gate plate 11 to move through the connecting plate 14, the gate plate 11 moves towards the second runner nozzle 9 to seal the second runner nozzle 9, molten iron flows out of the first runner nozzle 7 into the second molten iron tank 24, and the reciprocating movement is realized in such a way, and alternate receiving of molten iron is realized.
Further, as shown in fig. 3, the top of the cover plate 4 is fixedly connected with a slow flow plate 13, and the height of the slow flow plate 13 is greater than half of the height of the residual iron runner 12.
During operation, a large amount of molten iron rapidly flows out to cause high-temperature slag iron to pour, so that the whole middle repair or overhaul process is seriously influenced, even serious safety accidents are caused, the flow of the molten iron is slowed down by arranging the slow flow plate 13, the slow flow plate 13 plays a role in preventing the molten iron from splashing outside the residual iron runner 12, and the situation of molten iron splashing in the operation of overhauling the furnace body 1 is improved.
Further, as shown in fig. 5, a refractory brick layer 19 is laid on the top inner wall of the frame main beam 6, and a castable layer 18 is laid on top of the refractory brick layer 19.
When the device works, the bottom and the side surfaces of the residual iron runner 12 are both flatly built with a refractory brick layer 19, then a layer of castable is paved, the thickness of the front castable layer 18 is 300mm, the thickness of the tail castable layer 18 is 200mm, the materials are baked by gas fire after the completion, a layer of baking-free ramming material is paved on the upper surface of the castable layer 18, and the gradient of the residual iron runner 12 is completed by the connection of the thickness of the baking-free ramming material layer on the basis of the fall of a steel structure.
Further, as shown in fig. 3, the castable layer 18 is provided with reinforcing ribs 20, and the reinforcing ribs 20 are respectively connected with the tops of the first bracket 2 and the second bracket 3.
In operation, by providing the structure of the reinforcing ribs 20, the mechanical strength of the castable layer 18 and the frame main beam 6 is increased, and deformation due to high temperature and pressure of molten iron is reduced.
Further, as shown in fig. 2, a protective cover 5 is fixedly connected to a side wall of the cover plate 4, and a high temperature resistant material is adopted as an inner wall of the protective cover 5.
When the protective cover 5 is in operation, the protective cover 5 can be made of metal plates by welding, the inner wall is coated with high-temperature resistant materials, so that molten iron scouring corrosion is reduced, and the protective cover 5 also plays a role in preventing molten iron from splashing to the outer side of the residual iron runner 12.
Further, as shown in fig. 1, six first hot metal cans 22 are slidingly connected to the top of the first rail 21, six second hot metal cans 24 are slidingly connected to the top of the second rail 23, the first hot metal cans 22 are respectively matched with the second tap nozzles 9, and the second hot metal cans 24 are respectively matched with the first tap nozzles 7.
During operation, six 180-ton hot metal tanks are prepared for each iron rail line by utilizing the first rail 21 and the second rail 23, the two iron rails are simultaneously tapped, so that tapping efficiency is accelerated, thicker yellow sand is paved on the ground, refractory bricks and spray paint are laid on the ground water pipes and instrument boxes for protection, molten iron splashing is prevented, and equipment and facilities are burnt.
The working principle is that according to the analysis erosion condition of the hearth bottom temperature, the erosion position of the hearth is determined to be locally positioned at the upper part of a 5 th layer of carbon bricks, the gradient of a frame girder 6 is 3.6 degrees by arranging a first bracket 2 and a second bracket 3, a residual iron ditch 12 extends to the positions of a first rail 21 and a second rail 23, molten iron tanks on the two rails simultaneously receive molten iron and are alternately replaced, so that one molten iron tank is always ensured to receive iron, after the residual iron is completely discharged, the molten iron tank is pulled to steelmaking for smelting;
In order to realize alternate receiving of molten iron, when a first molten iron tank 22 on a first rail 21 receives molten iron, an electric push rod 15 is started, the output end of the electric push rod 15 drives a connecting plate 14 to move rightwards, the connecting plate 14 drives a gate plate 11 to move, the gate plate 11 slides in a second sleeve 16 to leave a second runner 9, the other end seals the first runner 7, molten iron flows from the second runner 9 to the first molten iron tank 22, then when a first second molten iron tank 24 on a second rail 23 receives molten iron, the electric push rod 15 drives the gate plate 11 to move through the connecting plate 14, the gate plate 11 moves towards the second runner 9 to seal the second runner 9, and molten iron flows out of the first runner 7 into the second molten iron tank 24 to reciprocate so as to realize alternate receiving of molten iron;
Since a large amount of molten iron rapidly flows out to cause high-temperature slag iron to pour, the whole middle repair or overhaul process is seriously influenced, even serious safety accidents are caused, the flow of the molten iron is slowed down by arranging the slow flow plate 13, the slow flow plate 13 plays a role in preventing the molten iron from splashing outside the residual iron runner 12, and the situation of molten iron splashing in the operation of overhauling and putting the residual iron in the furnace body 1 is improved.
It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations and modifications will be apparent to persons skilled in the art from the foregoing description. It is not necessary here nor is it exhaustive of all embodiments. And obvious variations or modifications thereof are contemplated as falling within the scope of the present utility model.
Claims (8)
1. The splash-proof residual iron discharging device for the blast furnace comprises a furnace body (1) and is characterized in that one side of the furnace body (1) is fixedly connected with a frame main beam (6), the top of the frame main beam (6) is fixedly connected with a cover plate (4), a residual iron groove (12) is formed between the cover plate (4) and the frame main beam (6), the residual iron groove (12) is in a trapezoid shape with a large upper part and a small lower part, a first support (2) and a second support (3) are fixedly connected to the bottom of the frame main beam (6) in sequence, the first support (2) is higher than the second support (3), the gradient between the bottom of the frame main beam (6) and the ground is 3.6 degrees, the bottom of the frame main beam (6) is fixedly connected with a first flow nozzle (7) and a second flow nozzle (9) in sequence, a second rail (23) is arranged below the first flow nozzle (9), and a first rail (21) is arranged below the second flow nozzle (9).
2. The blast furnace splash-proof residual iron discharging device according to claim 1, wherein a first protective layer (8) is fixedly connected to the inner wall of the first runner (7), a second protective layer (10) is fixedly connected to the inner wall of the second runner (9), the first protective layer (8) and the second protective layer (10) are both made of refractory clay paint, and the tops of the first protective layer (8) and the second protective layer (10) are both communicated with a residual iron runner (12).
3. The device for discharging the splash-proof residual iron of the blast furnace according to claim 2, wherein a first sleeve (17) is fixedly connected to the side wall, adjacent to the first flow nozzle (7), of the first flow nozzle (9), a second sleeve (16) is fixedly connected to the side wall, adjacent to the first flow nozzle (7), of the second flow nozzle (9), an electric push rod (15) is fixedly connected to the bottom of the frame girder (6), a connecting plate (14) is fixedly connected to the output end of the electric push rod (15), a flashboard (11) is fixedly connected to the bottom of the connecting plate (14), two ends of the flashboard (11) are respectively and slidably connected to the first sleeve (17) and the second sleeve (16), two ends of the flashboard (11) are respectively matched with the first sleeve (17) and the second sleeve (16), and a water-free cement layer is arranged in the flashboard (11).
4. The device for preventing the blast furnace from splashing residual iron from discharging is characterized in that a slow flow plate (13) is fixedly connected to the top of the cover plate (4), and the height of the slow flow plate (13) is larger than half of the height of a residual iron runner (12).
5. The device for preventing the blast furnace from splashing residual iron from discharging is characterized in that a refractory brick layer (19) is paved on the inner wall of the top of the frame main beam (6), and a pouring material layer (18) is paved on the top of the refractory brick layer (19).
6. The device for preventing the residual iron from splashing for the blast furnace according to claim 5, wherein the pouring material layer (18) is provided with reinforcing ribs (20), and the reinforcing ribs (20) are respectively connected with the tops of the first bracket (2) and the second bracket (3).
7. The device for preventing the blast furnace from splashing residual iron from discharging is characterized in that a protective cover (5) is fixedly connected to one side wall of the cover plate (4), and the inner wall of the protective cover (5) is made of high-temperature resistant materials.
8. The device for preventing the splashing residual iron of the blast furnace according to claim 7, wherein six first hot metal ladles (22) are connected to the top of the first rail (21) in a sliding manner, six second hot metal ladles (24) are connected to the top of the second rail (23) in a sliding manner, the first hot metal ladles (22) are respectively matched with the second tap nozzles (9), and the second hot metal ladles (24) are respectively matched with the first tap nozzles (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202422576057.8U CN223240102U (en) | 2024-10-24 | 2024-10-24 | A blast furnace anti-splash residual iron discharge device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202422576057.8U CN223240102U (en) | 2024-10-24 | 2024-10-24 | A blast furnace anti-splash residual iron discharge device |
Publications (1)
| Publication Number | Publication Date |
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| CN223240102U true CN223240102U (en) | 2025-08-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202422576057.8U Active CN223240102U (en) | 2024-10-24 | 2024-10-24 | A blast furnace anti-splash residual iron discharge device |
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| Country | Link |
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| CN (1) | CN223240102U (en) |
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2024
- 2024-10-24 CN CN202422576057.8U patent/CN223240102U/en active Active
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