Ladle refining furnace capable of reducing consumption of refractory material

Abstract

The utility model discloses a ladle refining furnace capable of reducing consumption of refractory materials, which comprises a furnace body, reinforcing ribs are arranged on the surface of the furnace body, and the inner wall of the furnace body is integrally lined with a basic refractory material; the bottom of the top cover is movably connected with the top of the furnace body; the utility model relates to the technical field of ladle refining furnaces, in particular to a ladle refining furnace. According to the ladle refining furnace capable of reducing the consumption of the refractory material, the gas filling assembly is arranged, the ladle refining furnace can communicate with an external gas pipe through an extension pipe, an elastic cushion pushes a sealing head to directly seal a sealing ring, the sealing head can be pushed only through enough air pressure, and oxygen is prevented from being exhausted outwards through the gas filling assembly; the problems that the carbon content in molten steel can be effectively reduced after oxygen is introduced to generate carbon dioxide and the carbon dioxide is directly discharged into air, but when the oxygen is introduced, the internal pressure is high, and the oxygen overflows to cause accidents are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of ladle refining furnaces, and specifically relates to a ladle refining furnace capable of reducing refractory consumption. Background Art

[0002] A ladle refining furnace refers to a device that combines the functions of heating and refining in a steelmaking furnace. The patent with the publication number CN215975901U discloses a ladle refining furnace capable of reducing refractory consumption, which relates to the technical field of iron and steel smelting equipment and includes a base, a sliding frame and a ladle furnace. Four corners of the top of the base are fixedly connected with sliding frames, and a ladle furnace is arranged at the middle position of the top of the base. A plurality of chutes are arranged on the inner side wall of the base. The material homogenizing tank mainly plays the role of storing raw materials, and the auger plays the role of evenly discharging the raw material particles from the material homogenizing tank. During the sliding process of the raw material particles, it can slow down the speed and introduce the raw materials into the chute, avoiding the direct impact of the raw materials on the inner wall of the ladle furnace and causing the loss of the refractory material of the furnace body. The depth of the upper end of the chute on the inner wall of the ladle furnace is greater than that of the lower end. Therefore, after the raw materials are discharged from the material homogenizing pipe, they can slowly slide into the ladle furnace through the chute, thereby effectively protecting the refractory material at the bottom of the ladle furnace. Moreover, a plurality of material homogenizing pipes are arranged and evenly distributed, so it can play the role of uniform feeding.

[0003] As shown in the above technology, in production, the ladle refining furnace is a device for containing molten steel, and it is a refining device itself. When ordinary ladle furnaces are used for steelmaking, it is necessary to reduce the carbon element content in the molten steel, which is inconvenient to operate. It is necessary to introduce oxygen to generate carbon dioxide and directly discharge it into the air, which can effectively reduce the carbon content in the molten steel. However, when oxygen is introduced, the internal pressure is high, and the oxygen overflow may cause accidents. Content of the Utility Model

[0004] Aiming at the deficiencies of the prior art, the utility model provides a ladle refining furnace capable of reducing refractory consumption, and solves the problem that when oxygen is introduced, the internal pressure is high and the oxygen overflow may cause accidents.

[0005] To achieve the above purposes, the utility model is realized through the following technical solutions: A ladle refining furnace capable of reducing refractory consumption, comprising:

[0006] The furnace body, reinforcing ribs are arranged on the surface of the furnace body, and the inner wall of the furnace body is integrally lined with basic refractory materials;

[0007] The top cover, the bottom of the top cover is movably connected to the top of the furnace body;

[0008] The docking component, the docking component includes the top of the surface of the furnace body, and the docking component is used for the quick connection of the furnace body and the top cover;

[0009] Gas filling component, the gas filling component penetrates through the top cover and extends to the inside of the top cover, and the gas filling component is used to fill oxygen into the inside of the furnace body to reduce the steel content in the steel;

[0010] Electrode heating component, the electrode heating component penetrates through the top cover and extends to the inside of the top cover, and the electrode heating component heats the molten steel inside the furnace body;

[0011] Exhaust pipe, one end of the exhaust pipe penetrates through the top cover and extends to the inside of the top cover, and the exhaust pipe is used to discharge carbon dioxide;

[0012] Lifting block, one side of the lifting block is fixedly connected to the surface of the top cover.

[0013] Preferably, the docking component includes an annular plate fixedly connected to the top of the surface of the furnace body, a limiting groove block is fixedly connected to the top of the annular plate, four limiting groove blocks are symmetrically arranged, a contact plate is movably connected to the inner wall of the limiting groove block, anti-slip bumps are arranged on the surface of the contact plate, and one side of the contact plate is fixedly connected to the surface of the top cover.

[0014] Preferably, the gas filling component includes a gas filling pipe penetrating through the top cover, an extension pipe is communicated with the top end of the gas filling pipe, and a sealing ring is fixedly connected to the top of the inner wall of the extension pipe.

[0015] Preferably, a sealing head is movably connected to the surface of the sealing ring, a movable rod is fixedly connected to the middle of the bottom of the sealing head, a positioning sleeve is movably sleeved on the surface of the movable rod, a baffle is fixedly connected to one side of the positioning sleeve, an elastic pad is fixedly connected to the top of the baffle, and the top of the elastic pad is fixedly connected to the bottom of the sealing head.

[0016] Preferably, the electrode heating component includes a bearing rod penetrating through the top cover and fixedly connected thereto, and a threaded groove is opened at the bottom of the bearing rod.

[0017] Preferably, a hanging rod is threadedly connected to the inner wall of the threaded groove, and an electrode plate is fixedly connected to the bottom of the hanging rod.

[0018] Beneficial effects

[0019] The utility model provides a ladle refining furnace that can reduce the consumption of refractory materials. Compared with the prior art, the following beneficial effects are achieved:

[0020] (1) The ladle refining furnace capable of reducing refractory consumption can communicate with an external gas pipe through an extension pipe by virtue of the arrangement of the gas adding component. The elastic pad pushes the sealing head to directly seal the sealing ring. Only when there is sufficient air pressure can the sealing head be pushed to prevent oxygen from discharging outward through the gas adding component, solving the problem that when oxygen is introduced to generate carbon dioxide and directly discharged into the air, the carbon content in the molten steel can be effectively reduced, but when oxygen is introduced, the internal pressure is high and oxygen overflows, causing accidents.

[0021] (2) The ladle refining furnace capable of reducing refractory consumption can slide the contact plate of the ladle refining furnace into the inner wall of the limit groove block by virtue of the arrangement of the docking component. There is a large static friction force between the limit groove block and the contact plate, which can facilitate the quick opening and closing of the ladle refining furnace in the later stage. By virtue of the arrangement of the electrode heating component, the suspension rod is threadedly connected with the threaded groove, which is easy to quickly disassemble in the later stage. Description of the Drawings

[0022] Figure 1 is a three-dimensional schematic diagram of the present utility model;

[0023] Figure 2 is a cross-sectional view of the present utility model;

[0024] Figure 3 of the present utility model Figure 2 is a partial enlarged view at A in;

[0025] Figure 4 of the present utility model Figure 2 is a partial enlarged view at B in.

[0026] In the figure: 1. Furnace body; 2. Top cover; 3. Docking component; 31. Annular plate; 32. Limit groove block; 33. Contact plate; 4. Gas adding component; 41. Gas adding pipe; 42. Extension pipe; 43. Sealing ring; 44. Sealing head; 45. Movable rod; 46. Positioning sleeve; 47. Baffle; 48. Elastic pad; 5. Electrode heating component; 51. Bearing rod; 52. Threaded groove; 53. Suspension rod; 54. Electrode plate; 6. Exhaust pipe; 7. Lifting block. Detailed Embodiments

[0027] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0028] Please refer to Figures 1-4 , the present utility model provides two technical solutions:

[0029] Embodiment 1, a ladle refining furnace capable of reducing refractory consumption, comprising:

[0030] A furnace body 1, the surface of the furnace body 1 is provided with reinforcing ribs, and the inner wall of the furnace body 1 is lined with alkaline refractory material as a whole;

[0031] A top cover 2, the bottom of which is movably connected to the top of the furnace body 1;

[0032] A docking assembly 3, the docking assembly 3 includes a top portion connected to the surface of the furnace body 1, and the docking assembly 3 is used for quickly connecting the furnace body 1 and the top cover 2;

[0033] Aeration assembly 4, the aeration assembly 4 passes through the top cover 2 and extends to the inside of the top cover 2, and the aeration assembly 4 is used to fill oxygen into the furnace body 1 to reduce the amount of steel in the steel inclusion;

[0034] The electrode heating assembly 5 penetrates the top cover 2 and extends to the inside of the top cover 2. The electrode heating assembly 5 heats the molten steel inside the furnace body 1. When working, the bottom of the electrode heating assembly 5 is placed on the top of the molten steel and contacts with the slag produced later;

[0035] An exhaust pipe 6, one end of which passes through the top cover 2 and extends to the inside of the top cover 2, and the exhaust pipe 6 is used to discharge carbon dioxide, and the exhaust pipe 6 has a built-in electric control valve;

[0036] The lifting block 7 has one side fixedly connected to the surface of the top cover 2. By utilizing the arrangement of the aeration component 4, the ladle refining furnace can be connected to the external air pipe through the extension tube 42. The elastic pad 48 pushes the closing head 44 to directly close the closing ring 43. Only sufficient air pressure can push the closing head 44 to prevent oxygen from being discharged outward through the aeration component 4. This solves the problem of generating carbon dioxide when oxygen is introduced and directly discharging it into the air, which can effectively reduce the carbon content in molten steel. However, when oxygen is introduced, the internal pressure is high and the oxygen overflows to cause accidents.

[0037] Embodiment 2, which is mainly different from embodiment 1, is a ladle refining furnace capable of reducing the consumption of refractory materials, the docking assembly 3 comprises an annular plate 31 fixedly connected to the top of the surface of the furnace body 1, the top of the annular plate 31 is fixedly connected to a limiting slot block 32, four limiting slot blocks 32 are symmetrically arranged, the inner wall of the limiting slot block 32 is provided with a friction pattern, the inner wall of the limiting slot block 32 is movably connected with a contact plate 33, the surface of the contact plate 33 is provided with anti-slip bumps, one side of the contact plate 33 is fixedly connected to the surface of the top cover 2, the gas filling assembly 4 comprises a gas filling pipe 41 penetrating the top cover 2, the top end of the gas filling pipe 41 is connected to an extension pipe 42, the top of the inner wall of the extension pipe 42 is fixedly connected with a closed ring 43, the surface of the closed ring 43 is movably connected with a closed head 44, the middle of the bottom of the closed head 44 is fixedly connected with a movable rod 45, and the movable rod The surface movable sleeve of 45 is provided with a positioning sleeve 46, one side of the positioning sleeve 46 is fixedly connected with a baffle 47, the top of the baffle 47 is fixedly connected with an elastic pad 48, the top of the elastic pad 48 is fixedly connected to the bottom of the closing head 44, the electrode heating component 5 includes a bearing rod 51 that penetrates the top cover 2 and is fixedly connected thereto, the bottom of the bearing rod 51 is provided with a threaded groove 52, the inner wall of the threaded groove 52 is threadedly connected with a suspension rod 53, and the bottom of the suspension rod 53 is fixedly connected with an electrode plate 54. By utilizing the setting of the docking component 3, the contact plate 33 of the ladle refining furnace slides into the inner wall of the limiting groove block 32, and there is a large static friction between the limiting groove block 32 and the contact plate 33, which can facilitate the rapid opening and closing of the ladle refining furnace in the later stage. By utilizing the setting of the electrode heating component 5, the suspension rod 53 is threadedly connected with the threaded groove 52, which is easy to be quickly disassembled in the later stage.

[0038] The integral lining of the ladle furnace body adopts castable material, which eliminates brick seams compared with brick lining. The service life of the lining is 150-200 times. The construction is easy to mechanize, the construction speed is fast, labor and effort are saved, the lining cost is reduced, the service life is increased, and the consumption of refractory materials is reduced. The ladle lining is cast in a sleeve, that is, when the lining erosion exceeds half of the original thickness, the residue and steel on the ladle lining are removed, the ladle bottom is re-cast first, and then the ladle wall is re-cast on the tire mold. The lining size after re-casting is the same as the new ladle lining, and it can be put into use again after baking, and the number of uses is similar to that of a new ladle. Since the material used for re-casting is only 1 / 3 of the material used for the new lining, a large amount of refractory material consumption is saved.

[0039] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0040] During operation, one side of the contact plate 33 is rotated and inserted into the inside of the limit groove block 32. The top cover 2 on one side of the contact plate 33 is stably attached and sealed to the top of the furnace body 1. The external oxygen pipe is connected to the top of the epitaxial tube 42, and high-pressure oxygen is introduced into the epitaxial tube 42. The oxygen pushes the sealing head 44, and the sealing head 44 drives the movable rod 45 to slide in the positioning sleeve 46. The sealing head 44 presses the elastic pad 48, and the sealing head 44 is separated from the sealing ring 43. Oxygen enters the furnace body 1. The electrode heating assembly 5 is turned on. After carbon elements in the furnace body 1 produce carbon dioxide, it is directly extracted outward through the exhaust pipe 6. When maintaining the electrode plate 54, rotate the hanging rod 53, separate the hanging rod 53 from the threaded groove 52 for maintenance, and then connect it. When the device stops working, restore the device to its original state.

[0041] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device.

[0042] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A ladle refining furnace capable of reducing refractory consumption, characterized in that: include: A furnace body (1), wherein the surface of the furnace body (1) is provided with reinforcing ribs, and the inner wall of the furnace body (1) is lined integrally with alkaline refractory material; A top cover (2), the bottom of the top cover (2) being movably connected to the top of the furnace body (1); A docking assembly (3), the docking assembly (3) comprising a top portion connected to the surface of the furnace body (1), the docking assembly (3) being used for quickly connecting the furnace body (1) and the top cover (2); an aeration component (4), the aeration component (4) passing through the top cover (2) and extending to the inside of the top cover (2), the aeration component (4) being used to fill oxygen into the furnace body (1) to reduce the amount of steel contained in the steel; An electrode heating assembly (5), wherein the electrode heating assembly (5) penetrates the top cover (2) and extends to the interior of the top cover (2), and the electrode heating assembly (5) heats the molten steel inside the furnace body (1); an exhaust pipe (6), one end of which passes through the top cover (2) and extends to the interior of the top cover (2), and the exhaust pipe (6) is used to discharge carbon dioxide; A hanging block (7), one side of which is fixedly connected to the surface of the top cover (2).

2. A ladle refining furnace capable of reducing refractory consumption according to claim 1, characterized in that: The docking assembly (3) comprises an annular plate (31) fixedly connected to the top of the surface of the furnace body (1); the top of the annular plate (31) is fixedly connected to a limiting slot block (32); four limiting slot blocks (32) are symmetrically arranged; the inner wall of the limiting slot block (32) is movably connected to a contact plate (33); the surface of the contact plate (33) is provided with anti-slip protrusions; and one side of the contact plate (33) is fixedly connected to the surface of the top cover (2).

3. The ladle refining furnace capable of reducing refractory consumption according to claim 1, characterized in that: The gas filling assembly (4) comprises a gas filling pipe (41) penetrating the top cover (2); the top end of the gas filling pipe (41) is connected to an extension pipe (42); and the top of the inner wall of the extension pipe (42) is fixedly connected to a closed ring (43).

4. A ladle refining furnace capable of reducing refractory consumption according to claim 3, characterized in that: The surface of the closed ring (43) is movably connected to a closed head (44), the middle of the bottom of the closed head (44) is fixedly connected to a movable rod (45), the surface of the movable rod (45) is movably sleeved with a positioning sleeve (46), one side of the positioning sleeve (46) is fixedly connected to a baffle (47), the top of the baffle (47) is fixedly connected to an elastic pad (48), and the top of the elastic pad (48) is fixedly connected to the bottom of the closed head (44).

5. The ladle refining furnace capable of reducing refractory consumption according to claim 1, characterized in that: The electrode heating assembly (5) comprises a bearing rod (51) that penetrates through the top cover (2) and is fixedly connected thereto, and a threaded groove (52) is provided at the bottom of the bearing rod (51).

6. A ladle refining furnace capable of reducing refractory consumption according to claim 5, characterized in that: The inner wall of the threaded groove (52) is threadedly connected to a suspension rod (53), and the bottom of the suspension rod (53) is fixedly connected to an electrode plate (54).

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