CN219824257U - Composite iron notch device - Google Patents

Composite iron notch device Download PDF

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Publication number
CN219824257U
CN219824257U CN202321354645.6U CN202321354645U CN219824257U CN 219824257 U CN219824257 U CN 219824257U CN 202321354645 U CN202321354645 U CN 202321354645U CN 219824257 U CN219824257 U CN 219824257U
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China
Prior art keywords
iron notch
tap hole
brick
carbon bricks
composite
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CN202321354645.6U
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Chinese (zh)
Inventor
王平
夏中海
王运练
才旺
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Jiangsu Shagang Group Co Ltd
Zhangjiagang Hongchang Steel Plate Co Ltd
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Jiangsu Shagang Group Co Ltd
Zhangjiagang Hongchang Steel Plate Co Ltd
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Priority to CN202321354645.6U priority Critical patent/CN219824257U/en
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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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  • Furnace Housings, Linings, Walls, And Ceilings (AREA)

Abstract

The utility model relates to a composite iron notch device, which comprises a side wall and an iron notch, wherein the iron notch is arranged on the side wall; the iron notch combined brick is arranged opposite to the iron notch frame, the iron notch combined brick is formed by three layers of a plurality of first carbon bricks and a plurality of second carbon bricks, the second carbon bricks are opposite to the first carbon bricks and are built among the first carbon bricks, the length D1 of the first carbon bricks is twice the length D2 of the second carbon bricks, and the thickness H2 of the second carbon bricks is twice the thickness H1 of the first carbon bricks; the heat-resistant pouring material layer is integrally poured between the iron notch combined brick and the iron notch frame, and a communicating pore canal is arranged in the heat-resistant pouring material layer and the second carbon brick; the heat-resistant castable layer is arranged between the taphole frame and the taphole combined brick in an integral pouring mode, so that the influence of thermal stress and thermal expansion and contraction of the furnace shell on the taphole combined brick is eliminated, the taphole combined brick is built into three layers in a staggered mode, the fact that a hole channel is not connected is ensured, and gas channeling is effectively prevented.

Description

Composite iron notch device
Technical Field
The utility model relates to the technical field of iron making, in particular to a composite iron notch device.
Background
When the blast furnace is newly built or overhauled, the hearth side wall of the blast furnace generally adopts a carbon brick and ceramic cup structure, the whole side wall is 1000-1800mm long, a large block of fan-shaped carbon bricks with the thickness of 450mm are built in an annular shape around the circumference of the hearth side wall for 10 layers, the carbon bricks and the hot surface of the cooling wall are filled with ramming materials, and the surface of the carbon brick at the inner side of the hearth is closely attached to the ceramic cup so as to play a role in protecting the carbon bricks.
The iron notch is a blast furnace structure for tapping and deslagging, the iron notch is arranged on 7-9 layers of carbon bricks and is built by special multi-block iron notch combined bricks, the iron notch combined bricks directly extend into the iron notch frame, in the later production process, the combined bricks in the iron notch frame are easily affected by thermal stress in the furnace and thermal expansion and contraction of the furnace shell, so that cracks are generated due to breakage of the combined bricks, gas in a iron notch channel is blown out, serious potential safety hazards appear, if iron flows are splashed during tapping, normal tapping is affected, and the risk that personnel are scalded by iron flowers exists.
Disclosure of Invention
Therefore, the utility model aims to solve the technical problems that in the prior art, the combined bricks of the taphole directly extend into the taphole frame and are easily influenced by the thermal stress in the furnace and the thermal expansion and contraction of the furnace shell, so that the combined bricks in the taphole frame are broken to generate cracks, and the gas in the taphole channel is led out.
In order to solve the technical problems, the utility model provides a composite iron notch device, which comprises a side wall and an iron notch, wherein the iron notch is arranged on the side wall and comprises,
a tap hole frame;
the combined iron notch brick is arranged opposite to the iron notch frame, the combined iron notch brick is formed by three layers of first carbon bricks and second carbon bricks, the second carbon bricks are opposite to the first carbon bricks, the first carbon bricks are arranged between the second carbon bricks, the length D1 of the first carbon bricks is twice the length D2 of the second carbon bricks, and the thickness H2 of the second carbon bricks is twice the thickness H1 of the first carbon bricks.
And the heat-resistant castable layer is integrally poured between the iron notch combined brick and the iron notch frame, and a communicated pore canal is arranged in the heat-resistant castable layer and the second carbon brick.
In one embodiment of the utility model, the heat resistant castable layer extends to the interior of the taphole frame.
In one embodiment of the utility model, the side wall and the interface combined brick are arranged in a staggered manner to form a pouring groove, and the heat-resistant pouring material layer extends into the pouring groove.
In one embodiment of the utility model, the iron notch combined brick further comprises a cup wall, wherein the cup wall is closely arranged on the iron notch combined brick and the side wall and is positioned on one side of the iron notch combined brick relative to the iron notch frame, and the pore canal penetrates out of the cup wall.
In one embodiment of the utility model, the furnace further comprises a furnace shell which is arranged close to the side wall, and the furnace shell is arranged on the same side of the iron notch frame.
In one embodiment of the utility model, a cooling wall is further arranged between the furnace shell and the side wall, and a gap is arranged between the cooling wall and the furnace shell.
In one embodiment of the utility model, a ramming mass layer is provided between the cooling wall and the side wall.
In one embodiment of the utility model, the minimum distance between the combined brick of the iron notch and the cooling wall is 300mm.
In one embodiment of the utility model, the minimum distance between the combined brick of the iron notch and the iron notch frame is 1050mm.
In one embodiment of the utility model, the two sides of the iron notch combined brick are also provided with connecting parts
In one embodiment of the present utility model, the first carbon brick and the second carbon brick are each provided in a fan-shaped structure.
Compared with the prior art, the technical scheme of the utility model has the following advantages:
the utility model relates to a composite iron notch device, which comprises a side wall and an iron notch, wherein the iron notch is arranged on the side wall; the iron notch combined brick is arranged opposite to the iron notch frame, the iron notch combined brick is formed by three layers of a plurality of first carbon bricks and a plurality of second carbon bricks, the second carbon bricks are opposite to each other and are arranged among the first carbon bricks, the length D1 of the first carbon bricks is twice the length D2 of the second carbon bricks, and the thickness H2 of the second carbon bricks is twice the thickness H1 of the first carbon bricks; the heat-resistant castable layer is integrally poured between the iron notch combined brick and the iron notch frame, and a communicated pore canal is arranged in the heat-resistant castable layer and the second carbon brick; and a heat-resistant castable layer is poured between the iron notch combined brick and the iron notch frame, so that the iron notch combined brick is prevented from directly extending into the iron notch frame, the influence of thermal stress and thermal expansion and cold contraction of a furnace shell on the iron notch combined brick is eliminated, the iron notch combined brick is provided with three layers, a plurality of first carbon bricks and a plurality of second carbon bricks are alternately meshed, a pore canal is arranged in the second carbon bricks, the pore canal is prevented from being sewn, the gas channeling is effectively prevented, and the heat-resistant castable layer has positive effects on the production improvement and consumption reduction of a blast furnace.
Drawings
In order that the utility model may be more readily understood, a more particular description of the utility model will be rendered by reference to specific embodiments thereof that are illustrated in the appended drawings, in which
Fig. 1 is a schematic structural view of a cross-sectional view of a composite tap hole apparatus according to a preferred embodiment of the present utility model.
Fig. 2 is a schematic structural view of a front view of a tap hole combining brick of the composite tap hole apparatus shown in fig. 1.
Fig. 3 is a schematic structural view of a top view of the taphole combined brick shown in fig. 2.
Description of the specification reference numerals: 1. a tap hole frame; 2. a duct; 3. a heat resistant castable layer; 4. a furnace shell; 5. a cooling wall; 6. ramming a material layer; 7. a sidewall; 8. iron notch combined bricks; 9. a cup wall; 10. a second carbon brick; 11. a first carbon brick; 12. and a connecting part.
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.
Examples
In one embodiment of the present utility model, and as shown with reference to fig. 1 and 2, a composite tap hole apparatus of the present utility model comprises a sidewall 7 and a tap hole provided on the sidewall 7, the tap hole comprising,
the iron notch frame 1 is arranged on 6-8 layers of the side wall 7, an opening for slag iron to pass through is formed in the middle of the iron notch frame 1, and the iron notch frame 1 can effectively avoid structural hidden dangers such as weld cracking and the like generated by the side wall 7 under high-strength and high-temperature difference operation environments, so that potential safety hazards such as failure of sealing structure of the iron notch frame 1 and gas leakage and the like caused by the weld cracking and the like are avoided.
The iron notch combined brick 8 is formed by building three layers of carbon bricks, the thickness of each layer of carbon brick is 500 mm, the iron notch combined brick 8 is opposite to the iron notch frame 1, the iron notch combined brick 8 is arranged at 6-8 layers, the iron notch combined brick 8 is formed by building a plurality of first carbon bricks 11 and two second carbon bricks 10, the two second carbon bricks 10 are opposite to each other and are built among the first carbon bricks 11, the first carbon bricks 11 are built in a staggered manner, the length D1 of the first carbon brick 11 is twice the length D2 of the second carbon brick 10, the thickness H2 of the second carbon brick 10 is twice the thickness H1 of the first carbon brick 11, and the iron notch combined brick 8 is arranged in the second carbon brick 10 in a matched manner so as to improve the level of the pore channel 2 and prevent a vertical joint and effectively block coal gas from flowing out.
In one embodiment of the present utility model, referring to fig. 1, a heat resistant castable layer 3 is integrally cast on the tap hole composite brick8 with the taphole frame 1, the compactness of the heat-resistant castable layer 3 can be improved through the integral pouring effect, the cushioning effect between the interior of the hearth and the furnace shell and between the hearth and the taphole frame 1 is achieved, the influences of thermal stress and thermal expansion and contraction of the furnace shell are eliminated, and the heat-resistant castable layer 3 comprises the components of Al 2 O 3 SiC-C, which plays a role in buffering the interior of the hearth, the furnace shell 4 and the iron notch frame 1, and eliminates the influences of thermal stress and thermal expansion and contraction of the furnace shell 4; the heat-resistant castable layer 3 and the second carbon brick 10 are provided with pore channels 2, and the pore channels 2 are used for various material exchange passages, so that high requirements on air tightness are achieved.
In one embodiment of the present utility model, referring to fig. 1, the heat-resistant castable layer 3 extends into the iron notch frame 1, so as to further improve the adaptability of the iron notch frame 1 to high strength and high temperature difference, and improve the air tightness of the pore channel 2, and avoid the gas in the pore channel 2 from escaping.
In one embodiment of the present utility model, referring to fig. 1, the side wall 7 and the interface composite brick are arranged in a staggered manner to form a pouring groove, the heat-resistant pouring material layer 3 extends to the pouring groove, and the pouring groove has the function of increasing the contact area among the heat-resistant pouring material layer 3, the iron notch composite brick 8 and the side wall 7, and improving the structural stability and the air tightness among the three.
In one embodiment of the present utility model, referring to fig. 1, the present utility model further includes a cup wall 9, the cup wall 9 is tightly attached to the tap hole combined brick 8 and the side wall 7, and is located at one side of the tap hole combined brick 8 opposite to the tap hole frame 1, the cup wall 9 is made of ceramic material, and is used for protecting the side wall 7 and the tap hole combined brick 8, reducing the influence of thermal stress in the furnace and thermal contraction of the furnace shell 4 on the side wall 7 and the tap hole combined brick 8, reducing damage to the side wall 7 and the tap hole combined brick 8 caused by various complex physical and chemical environments, and the duct 2 passes through the cup wall 9.
In one embodiment of the present utility model, referring to fig. 1, the furnace shell 4 is disposed close to the side wall 7, the furnace shell 4 is disposed on the same side as the tap hole frame 1, and the junction of the furnace shell 4 and the tap hole frame 1 is sealed, and the furnace shell 4 is used for protecting the side wall 7, so as to reduce damage to the side wall 7 caused by various complex physical and chemical environments.
In one embodiment of the present utility model, referring to fig. 1, a cooling wall 5 is further disposed between the furnace shell 4 and the side wall 7, and the cooling wall 5 is used for smoothly guiding and absorbing the heat transferred from the blast furnace, so as to prevent the high-temperature heat flow from directly reaching the furnace shell 4; a gap is arranged between the cooling wall 5 and the furnace shell 4, and the furnace shell 4 is further isolated from high temperature by air resistance.
In one embodiment of the present utility model, referring to fig. 1, a ramming mass layer 6 is disposed between the cooling wall 5 and the side wall 7, and the ramming mass layer 6 has the characteristics of good chemical stability, scouring resistance, abrasion resistance, spalling resistance, and thermal shock resistance.
In one embodiment of the present utility model, referring to fig. 1, the minimum distance between the tap hole combined brick 8 and the cooling wall 5 is 300mm, so that the tap hole combined brick 8 is prevented from being affected by thermal stress in the furnace and thermal expansion and contraction of the furnace shell 4.
In one embodiment of the present utility model, referring to fig. 1, the minimum distance between the tap hole combined brick 8 and the tap hole frame 1 is 1050mm, so that the tap hole combined brick 8 is prevented from being affected by thermal stress in the furnace and thermal expansion and contraction of the furnace shell 4.
In one embodiment of the present utility model, referring to fig. 3, the two sides of the tap hole combined brick 8 are further provided with connection parts 12, and the connection parts 12 are beneficial to improving the connection tightness and structural stability between the carbon bricks because the blast furnace is built by the carbon bricks in a ring shape.
In one embodiment of the present utility model, referring to fig. 1, the first carbon brick 11 and the second carbon brick 10 are each provided in a fan-shaped structure, which is advantageous in improving connection tightness and structural stability between the carbon bricks, since the blast furnace is built by the carbon bricks in a "ring shape".
In one embodiment of the utility model, as shown with reference to fig. 1, the sidewall is a blast furnace hearth sidewall.
The working principle of the composite iron notch device of the utility model is as follows:
the combined structure of the heat-resistant castable layer 3 and the iron notch combined brick 8 is arranged on the iron notch, wherein the heat-resistant castable layer 3 is integrally poured between the iron notch combined brick 8 and the iron notch frame 1, and plays a role in buffering the interior of a hearth, a furnace shell and the iron notch frame 1, and the iron notch combined brick 8 does not extend into the iron notch frame 1, so that the problems that the iron notch combined brick 8 is easily influenced by thermal stress in a furnace and thermal expansion and contraction of the furnace shell 4, cracks are generated due to breakage of the combined brick, and gas channeling of a pore canal 2 is caused are solved, the iron notch combined brick 8 is formed by constructing three layers in a staggered combined construction mode, the thickness H1 of a first carbon brick 11 is smaller than the thickness H2 of a second carbon brick 10, the iron notch pore canal 2 is arranged in the second carbon brick 10, the integrity of the iron notch pore canal 2 is ensured, and gas channeling caused by splicing is avoided, so that the phenomenon of iron flow splashing during iron tapping is avoided, and the gas channeling and the method has positive effects on the production and consumption reduction of a blast furnace.
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 of the present utility model will be apparent to those of ordinary skill in the art in light of 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 (10)

1. A composite iron notch device, which comprises a side wall and an iron notch, wherein the iron notch is arranged on the side wall, and is characterized in that the iron notch comprises,
a tap hole frame;
the iron notch combined brick is arranged opposite to the iron notch frame, the iron notch combined brick is formed by three layers of a plurality of first carbon bricks and a plurality of second carbon bricks, the second carbon bricks are opposite to each other and are arranged among the first carbon bricks, the length D1 of the first carbon bricks is twice the length D2 of the second carbon bricks, and the thickness H2 of the second carbon bricks is twice the thickness H1 of the first carbon bricks;
and the heat-resistant castable layer is integrally poured between the iron notch combined brick and the iron notch frame, and a communicated pore canal is arranged in the heat-resistant castable layer and the second carbon brick.
2. A composite tap hole apparatus as claimed in claim 1, wherein the heat resistant castable layer extends to the interior of the tap hole frame.
3. The composite taphole device according to claim 1, wherein the side wall and the taphole block are arranged in a staggered manner to form a pouring channel, and the heat resistant pouring layer extends into the pouring channel.
4. The composite tap hole apparatus of claim 1, further comprising a cup wall disposed in close proximity to said tap hole block and said side wall and on a side of said tap hole block opposite said tap hole frame, said aperture extending through said cup wall.
5. The composite tap hole apparatus of claim 1, further comprising a furnace shell disposed proximate the side wall, the furnace shell being disposed on a same side as the tap hole frame.
6. The composite tap hole apparatus of claim 5, wherein a cooling wall is further provided between the furnace shell and the side wall, and a gap is provided between the cooling wall and the furnace shell.
7. The composite tap hole apparatus of claim 6, wherein a ramming mass layer is disposed between the cooling wall and the side wall.
8. The composite tap hole apparatus of claim 6, wherein the minimum distance between the tap hole composite brick and the stave is 300mm.
9. A composite tap hole apparatus as claimed in claim 1, wherein the minimum distance between the tap hole composite brick and the tap hole frame is 1050mm.
10. The composite taphole device according to claim 1, wherein the two sides of the taphole assembly block are further provided with connecting parts.
CN202321354645.6U 2023-05-31 2023-05-31 Composite iron notch device Active CN219824257U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202321354645.6U CN219824257U (en) 2023-05-31 2023-05-31 Composite iron notch device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202321354645.6U CN219824257U (en) 2023-05-31 2023-05-31 Composite iron notch device

Publications (1)

Publication Number Publication Date
CN219824257U true CN219824257U (en) 2023-10-13

Family

ID=88249641

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202321354645.6U Active CN219824257U (en) 2023-05-31 2023-05-31 Composite iron notch device

Country Status (1)

Country Link
CN (1) CN219824257U (en)

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