CN217775541U - Hot-metal bottle with disperse air brick - Google Patents

Abstract

The utility model discloses a hot metal bottle with disperse air brick, including the hot metal bottle, the upper portion of hot metal bottle is equipped with takes off the slag notch, the inside second flame retardant coating that is equipped with of hot metal bottle, the inside of second flame retardant coating is equipped with first flame retardant coating, be equipped with a cavity on one side of hot metal bottle for taking off the slag notch, be equipped with two horizontally fire-resistant interlayers in the cavity, two fire-resistant interlayers are on same horizontal position, the air brick is all installed in the cavity that is located the top surface of fire-resistant interlayer and bottom surface, be equipped with first gap between two adjacent air bricks of level and the fire-resistant interlayer, be equipped with the second gap between the lateral wall of the air brick in vertical direction and fire-resistant interlayer and the lateral wall of cavity, first gap and second gap intussuseption are filled with refractory castable. The utility model discloses when hot metal bottle air brick installation, adopt 4 integral air bricks to be the rectangle and arrange, and 4 air bricks use in turn, need not carry out the minor overhaul in hot metal bottle life cycle, reduced cost of labor, material cost, low in labor strength.

Description

Hot-metal bottle with disperse air brick

Technical Field

The utility model relates to the technical field of smelting equipment, concretely relates to hot metal bottle with disperse air brick.

Background

The molten iron pretreatment technology is widely applied from the development of the sixth and seventies of the last century to the present, can improve the quality of molten iron, relieve the refining pressure of a converter and a ladle, and is gradually applied to high-cleanness steel smelting of large-scale steel enterprises. With the development of the steel industry to high precision, the application of the air brick of the hot-metal ladle becomes a necessity of the development of the steel industry, and the effect is obvious particularly in the ultra-low sulfur steel smelting. The hot metal ladle air brick has good desulfurization effect; the slagging-off effect is good, slag can be driven to the 1/3 range of the slagging-off side of the desulfurization hot metal tank effectively during blowing, the slagging-off time can be shortened obviously, the turnover rhythm is accelerated, and the production efficiency is improved. However, the service life of the air brick of the hot metal ladle is relatively low at present, particularly when a side blowing process is adopted, the wall-covering brick of the hot metal ladle is thin, the effective height of the air brick is low, the service life is lower, the air brick (generally 4-5 times) needs to be replaced by multiple times of minor repair in the service cycle of the hot metal ladle, so that the hot metal ladle has low heat turnover efficiency, high labor intensity, high labor cost and high material cost, and because of the restriction of the smelting site of the hot metal ladle, the restriction of the installation position and the like, the surface slagging-off treatment of the air brick of the hot metal ladle is difficult to carry out in the use process, the air brick has unstable air permeability effect, and particularly, the air permeability effect is poorer when the hot metal ladle is intermittently used; meanwhile, the molten iron has strong fluidity and good permeability, and has higher requirements on the design mode and safety performance of the ventilating seam. Due to the adverse factors, the large-scale application and popularization of the hot-metal ladle air brick are also greatly restricted.

SUMMERY OF THE UTILITY MODEL

To the deficiency of the prior art, the utility model aims to provide a hot metal bottle with disperse air brick.

The utility model discloses a realize above-mentioned purpose, adopt following technical scheme:

the utility model provides a hot-metal bottle with disperse air brick, includes the hot-metal bottle, the upper portion of hot-metal bottle is equipped with takes off the slag notch, the inside second flame retardant coating that is equipped with of hot-metal bottle, the inside of second flame retardant coating is equipped with first flame retardant coating, the hot-metal bottle is equipped with a cavity for taking off one side of slag notch, be equipped with two horizontally fire-resistant interlayers in the cavity, two fire-resistant interlayers are located on same horizontal position all install the air brick in the cavity of the top surface of fire-resistant interlayer and bottom surface, are equipped with first gap between two horizontally adjacent air bricks and the fire-resistant interlayer, are equipped with the second gap between the lateral wall of the air brick in the longitudinal direction and fire-resistant interlayer and the lateral wall of cavity, first gap and second gap intussuseption are filled with refractory castable.

In the technical scheme, the first refractory layer is a working layer of the hot metal ladle, is directly contacted with molten iron and is built by wall-wrapped bricks, and the wall-wrapped bricks are made of a high-temperature-resistant refractory material; the second refractory layer is a permanent layer of the hot-metal ladle and is in contact with the shell of the hot-metal ladle, and casting materials, generally high-alumina refractory materials, are adopted; 4 integral air bricks are arranged in a rectangular shape, and the fire-resistant interlayer is the combination of a first fire-resistant layer and a second fire-resistant layer; the width of the first gap is 80-100 mm, and the width of the second gap is 60-80 mm; the refractory castable is high-strength quick-drying corundum castable, the castable has good thermal shock resistance and can be poured in a hot state, and the first gap and the second gap are densely poured by the high-strength quick-drying corundum castable; the air brick is arranged on one side of the molten iron tank far away from the slag removing opening and has a certain height from the bottom of the molten iron tank, so that the air brick can avoid the cold iron and cold steel left at the bottom of the molten iron tank after the molten iron is poured.

Furthermore, the air brick comprises an air brick seat and an air brick core arranged in the air brick seat, a steel shell is attached to the side face of the air brick core, a sealing cover plate is arranged at the bottom of the steel shell, a dispersion air-permeable block is arranged in the air brick core, and an air chamber is formed between the lower surface of the dispersion air-permeable block and the upper surface of the sealing cover plate.

In the technical scheme, the air brick cup is in a square design, the air brick core is in a round table shape and is made of refractory materials, and the air brick cup and the air brick core are connected in a direct wrapping mode, so that a gap which is easy to be corroded by molten steel is prevented from being left between the air brick core and the air brick cup, and the protection of the air brick core is improved; the steel shell is in a round table shape and plays a role of sealing the air brick core; the sealing cover plate is disc-shaped and plays roles in fixing the air blowing pipe and sealing, and the steel shell and the sealing cover plate are made of stainless steel; the dispersion air permeable block is in a prismoid shape, is formed by a machine pressing mode and then is sintered at a high temperature of 1600 ℃, has high strength, good air permeable effect and excellent corrosion resistance, has more than 230 service lives, forms through micro air holes through different particle level designs, has good air permeable effect, does not seep iron, can adapt to various air blowing processes, is particularly suitable for intermittent air blowing processes, generates small, uniform and dense air bubbles during air blowing, and can better promote the floating of impurities in molten iron and improve the stirring effect; the gas flowing into the blowing pipe is dispersed into the tiny air holes of the dispersion air permeable block through the air chamber.

Furthermore, an air blowing pipe communicated to the air chamber is arranged on the sealing cover plate.

Among the above-mentioned technical scheme, the material of gas blow pipe is the stainless steel pipe, can introduce inside the dispersion ventilative piece with outside gas.

Furthermore, a plurality of micro air holes are arranged in the dispersion air-permeable block.

Furthermore, the outer wall of the dispersion air-permeable block is provided with an anchoring groove, the anchoring groove is annular, and the air-permeable brick core is provided with an anchoring protrusion matched with the anchoring groove.

Among the above-mentioned technical scheme, solve the problem of diffusion ventilative piece and air brick core combination interface air leakage, seepage through setting up anchor groove.

Further, the top surface of the air brick core is higher than the top surface of the air brick cup.

Among the above-mentioned technical scheme, the top surface through the air brick core is higher than the setting of the top surface of air brick cup plays the positioning action when the air brick shaping for it is more convenient to produce.

Further, the top surface of the diffusion and ventilation block is higher than the top surface of the air brick core.

Among the above-mentioned technical scheme, the top surface through disperse ventilative piece is higher than the setting of the top surface of air brick core plays the positioning action when the air brick shaping for it is more convenient to produce.

Further, the air chamber depth is 6mm.

Compared with the prior art, the utility model provides a hot metal bottle with disperse air brick possesses following beneficial effect:

1. the utility model discloses an air brick is different from traditional combined type structure, does not adopt slit formula base, adopts the through type ventilation mode of dispersion ventilative piece, because the ventilative position of dispersion ventilative piece does not ooze iron, the hole of blowing is not blockked up, can satisfy various technologies of blowing among the smelting process, especially intermittent type formula's the technology of blowing, the bubble that produces when blowing is little and even intensive, the come-up of inclusion in the promotion molten iron that can be better promotes stirring effect, factor of safety is higher, and air brick simple structure, convenient large batch preparation.

2. When the hot metal ladle air brick is installed, 4 integral air bricks are arranged in a rectangular mode, and 4 air bricks are used in turn, the service life of each air brick can reach 3-3.5 times of the service life of a single air brick, the accumulated service life of each air brick can be synchronous with the age of a hot metal ladle, and due to the adoption of the through type air permeable mode of the dispersed air permeable blocks, when the air bricks and the air bricks are switched for use, the air permeable effect can be guaranteed, special treatment is not needed, time and labor are saved, in the service cycle of the hot metal ladle, minor repair is not needed, the whole energy cost, the labor cost and the material cost are all remarkably reduced, and the economic benefit is good.

Drawings

Fig. 1 is a schematic view of the internal structure of the present invention;

FIG. 2 is a schematic view of the structure in the direction A of FIG. 1;

fig. 3 is a schematic view of the internal structure of the air brick of the present invention.

The figure is marked with 1, a hot metal tank; 2. air permeable bricks; 21. an air-permeable brick cup; 22. a gas permeable brick core; 23. a diffusion breathable block; 24. an air chamber; 25. sealing the cover plate; 26. a steel shell; 27. an air blowing pipe; 28. an anchoring groove; 29. an anchoring projection; 3. a first refractory layer; 4. a second refractory layer; 5. a slag removing port; 6. a cavity; 7. a first slit; 8. a second slit; 9. refractory castable; 10. a refractory barrier.

Detailed Description

The invention will be further explained with reference to the following figures and examples:

referring to fig. 1 to 3, the embodiment of the present invention provides a hot metal ladle with dispersed air bricks, which includes a hot metal ladle 1, wherein a slag removing opening 5 is formed on an upper portion of the hot metal ladle 1, a second refractory layer 4 is formed inside the hot metal ladle 1, and is a permanent layer of the hot metal ladle 1, and is in contact with a shell of the hot metal ladle 1, and is made of a castable material, generally a high-alumina refractory material, a first refractory layer 3 is formed inside the second refractory layer 4, and is a working layer of the hot metal ladle 1, and is directly in contact with molten iron, and is built by wall-covering bricks, the wall-covering bricks are a high-temperature-resistant refractory material, a cavity 6 is formed on a side of the hot metal ladle 1 opposite to the slag removing opening 5, and has a certain height from the bottom of the hot metal ladle 1, so that the air bricks 2 can avoid cold iron and cold steel remaining on the bottom of the hot metal ladle 1 after molten iron is poured, two horizontal refractory interlayers 10 are formed in the cavity 6, the refractory interlayer 10 is a combination of a first refractory layer 3 and a second refractory layer 4, the two refractory interlayers 10 are arranged on the same horizontal position, air bricks 2,4 integral air bricks 2 are arranged in a rectangular shape in cavities 6 on the top surface and the bottom surface of the refractory interlayer 10, a first gap 7 is arranged between every two adjacent air bricks 2 and the refractory interlayer 10, the width of each air brick is 80-100 mm, a second gap 8 is arranged between the side walls of the air bricks 2 and the refractory interlayer 10 in the longitudinal direction and the side wall of the cavity 6, the width of each air brick is 60-80 mm, the first gap 7 and the second gap 8 are filled with a refractory castable 9, the refractory castable 9 is high-strength quick-drying corundum castable, the castable has good thermal shock resistance and can be poured in a hot state, and the first gap 7 and the second gap 8 are poured and compacted by high-strength quick-drying corundum castable.

In this embodiment, the air brick 2 includes an air brick holder 21 and an air brick core 22 disposed in the air brick holder 21, the air brick holder 21 is square, the air brick core 22 is truncated cone-shaped and is made of refractory materials, the air brick holder 21 and the air brick core 22 are connected in a direct wrapping manner, so as to prevent a gap which is easily eroded by molten steel from being left between the air brick core 22 and the air brick holder 21, thereby improving the protection of the air brick core 22, a steel shell 26 is attached to the side surface of the air brick core 22, and is truncated cone-shaped and made of stainless steel, thereby playing a role of sealing the air brick core 22, a sealing cover plate 25 is disposed at the bottom of the steel shell 26, and is disc-shaped and made of stainless steel, thereby fixing the air blowing pipe 27 and sealing, be equipped with dispersion ventilative piece 23 in ventilative brick core 22, be the terrace with edge shape, adopt the machine to press the high temperature sintering of process 1600 ℃ after the mode shaping, intensity is high, and ventilation effect is good, and anti erosion resistance is excellent, and life is more than 230 times, form the tiny gas pocket that link up through the design of different particle levels, and ventilation effect is good, does not ooze iron, adaptable various processes of blowing, the especially suitable intermittent type formula process of blowing, the bubble that produces when blowing is little and even intensive, the come-up of inclusion in the promotion molten iron that can be better promotes the stirring effect, form air chamber 24 between the lower surface of dispersion ventilative piece 23 and the upper surface of sealed apron 25, with the gas dispersion that flows into in the gas blow pipe 27 in the tiny gas pocket of dispersion ventilative piece 23.

In this embodiment, the sealing cover plate 25 is provided with an air blowing pipe 27 communicated with the air chamber 24, and the material of the air blowing pipe is a stainless steel round pipe, so that external air can be introduced into the dispersion air-permeable block 23.

In this embodiment, a plurality of micro air holes are formed in the dispersion permeable block 23.

In this embodiment, the outer wall of the diffusion air-permeable block 23 is provided with an anchoring groove 28, so that the problems of air leakage and seepage at the combination interface of the diffusion air-permeable block 23 and the air brick core 22 are solved, the anchoring groove 28 is annular, and the air brick core 22 is provided with an anchoring protrusion 29 matched with the anchoring groove 28.

In this embodiment, the top surface of the air brick core 22 is higher than the top surface of the air brick cup 21, which plays a positioning role when the air brick 2 is formed, so that the production is more convenient.

In this embodiment, the top surface of the diffusion air-permeable block 23 is higher than the top surface of the air-permeable brick core 22, and plays a positioning role when the air-permeable brick 2 is formed, so that the production is more convenient.

In this embodiment, the air chamber 24 is 6mm deep.

The utility model discloses an air brick 2 is different from traditional combined type structure, does not adopt slit formula base, adopts the through type ventilation mode of diffusion ventilative piece 23, because diffusion ventilative piece 23 ventilative position does not ooze iron, the hole of blowing is unblocked, can satisfy various processes of blowing in the smelting process, especially intermittent type formula's the process of blowing, the bubble that produces when blowing is little and even intensive, the come-up of inclusion in the promotion molten iron that can be better promotes the stirring effect, factor of safety is higher, and air brick 2 simple structure, make things convenient for large batch preparation.

When the hot metal ladle air brick 2 is installed, 4 integral air bricks 2 are arranged in a rectangular mode, and the 4 air bricks 2 are used in turn, the service life of each air brick can reach 3-3.5 times of the service life of the corresponding air brick 2, the accumulated service life of each air brick can be synchronous with the age of a hot metal ladle 1, and due to the adoption of the through type air permeable mode of the dispersed air permeable blocks 23, when the air bricks 2 and the air bricks 2 are switched for use, the air permeable effect can be guaranteed, special treatment is not needed, time and labor are saved, small repair is not needed in the service cycle of the hot metal ladle 1, the whole energy cost, the labor cost and the material cost are all remarkably reduced, and the economic benefit is good.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood as a specific case by those skilled in the art.

The above embodiments are only used to illustrate the technical solution of the present invention, and do not limit the protection scope of the present invention. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. All other embodiments, which can be obtained by a person skilled in the art without inventive step, are within the scope of the present invention. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art can still make no creative work on the condition of conflict, and make mutual combination, addition and deletion, or other adjustments according to the features in the embodiments of the present invention, thereby obtaining other technical solutions which are different and do not depart from the concept of the present invention, and these technical solutions also belong to the scope to be protected by the present invention.

Claims (8)

1. The utility model provides a hot-metal bottle with disperse air brick, its characterized in that includes hot-metal bottle (1), the upper portion of hot-metal bottle (1) is equipped with takes off slag hole (5), hot-metal bottle (1) inside is equipped with second flame retardant coating (4), the inside of second flame retardant coating (4) is equipped with first flame retardant coating (3), be equipped with a cavity (6) on one side of hot-metal bottle (1) for taking off slag hole (5), be equipped with two horizontally fire-resistant interlayer (10) in cavity (6), two fire-resistant interlayer (10) are on same horizontal position, are located all install air brick (2) in cavity (6) of the top surface of fire-resistant interlayer (10) and bottom surface, be equipped with first gap (7) between two horizontally adjacent air brick (2) and fire-resistant interlayer (10), be equipped with second gap (8) between the lateral wall of lateral wall and cavity (6) of the ascending air brick (2) of longitudinal direction and fire-resistant interlayer (10), first gap (7) and second gap (8) intussuseption are filled with refractory castable (9).

2. The hot metal ladle with dispersive air brick according to claim 1, wherein the air brick (2) comprises an air brick base (21) and an air brick core (22) arranged in the air brick base (21), a steel shell (26) is attached to the side surface of the air brick core (22), a sealing cover plate (25) is arranged at the bottom of the steel shell (26), a dispersive air permeable block (23) is arranged in the air brick core (22), and an air chamber (24) is formed between the lower surface of the dispersive air permeable block (23) and the upper surface of the sealing cover plate (25).

3. The hot-metal ladle with dispersive air brick according to claim 2, wherein the sealing cover plate (25) is provided with an air blowing pipe (27) communicated to the air chamber (24).

4. The hot metal ladle with dispersion air bricks according to claim 2, wherein a plurality of micro air holes are arranged in the dispersion air permeable block (23).

5. The hot metal ladle with dispersive air brick according to claim 2, wherein the outer wall of the dispersive air brick (23) is provided with an anchoring groove (28), the anchoring groove (28) is annular, and the air brick core (22) is provided with an anchoring protrusion (29) matched with the anchoring groove (28).

6. The hot-metal ladle with dispersive air brick according to claim 2, wherein the top surface of the air brick core (22) is higher than the top surface of the air brick cup (21).

7. The hot-metal ladle with dispersive air-brick according to claim 2, characterised in that the top surface of the dispersive air-permeable block (23) is higher than the top surface of the air-brick core (22).

8. The hot-metal ladle with dispersive air-brick according to claim 2, wherein the air chamber (24) has a depth of 6mm.

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