CN211872026U - Blast furnace taphole structure - Google Patents
Blast furnace taphole structure Download PDFInfo
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- CN211872026U CN211872026U CN201922348072.6U CN201922348072U CN211872026U CN 211872026 U CN211872026 U CN 211872026U CN 201922348072 U CN201922348072 U CN 201922348072U CN 211872026 U CN211872026 U CN 211872026U
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- molten iron
- taphole
- iron outflow
- outflow passageway
- blast furnace
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Abstract
The utility model provides a blast furnace taphole structure, including hearth lining and taphole frame, the taphole frame center is provided with molten iron outflow passageway to extending of hearth lining one side, be provided with the regional resistant material layer of taphole between hearth lining and the molten iron outflow passageway, be equipped with on the molten iron outflow passageway along its radial ring channel to the regional resistant material layer extension of taphole, molten iron outflow passageway and ring channel in all pack have the stemming. The utility model discloses a through set up the ring channel on the molten iron outflow passageway, play the fixed action to the stemming in the molten iron outflow passageway, guaranteed the wholeness on stemming and the regional resistant material layer of taphole in the molten iron outflow passageway, prolonged the life of taphole, the effect of shutoff coal gas still can be played in the design of ring channel simultaneously, alleviates coal gas drunkenness degree and improves the safety of tapping.
Description
Technical Field
The utility model belongs to the technical field of metallurgical equipment, concretely relates to blast furnace taphole structure.
Background
The center of an iron notch of the blast furnace usually leaves a hole with the diameter of 200-400mm as a molten iron outflow channel, the molten iron outflow channel needs to be filled with stemming, a taphole drill is used for drilling holes in the stemming during iron tapping so that the molten iron flows out, and the stemming is used for blocking by a stemming gun when the iron tapping is finished. Generally, a normal tapping hole needs to be operated 5-15 times a day, and tapping times are different according to the size of a blast furnace capacity and different tapping systems. However, the molten iron outflow channel of the taphole is a through hole structure with equal cross-sectional area in different depth ranges, so that in the process of opening and blocking the taphole, due to repeated mechanical impact of mud blocking of the mud gun machine and opening of the tapping machine, the mud gun in the molten iron outflow channel is easy to loose in structure, partially or wholly protrudes into the furnace and the like, the operation of loading a mud sleeve in front of the furnace and gas channeling can be influenced, and even the tapping safety can be influenced.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming the problem that the stemming is easy to loose in structure and affects tapping safety in the molten iron outflow channel of the existing taphole.
Therefore, the utility model provides a blast furnace taphole structure, including hearth inside lining and taphole frame, the taphole frame center is provided with molten iron outflow passageway to extending of hearth inside lining one side, be provided with the regional resistant material layer of taphole between hearth inside lining and the molten iron outflow passageway, be equipped with on the molten iron outflow passageway along its radial ring channel to the regional resistant material layer extension of taphole, molten iron outflow passageway and ring channel are interior all to be filled with the stemming.
Further, the groove width and the groove depth of the annular groove are both larger than 5 mm.
Furthermore, the annular grooves are distributed at intervals along the axis of the molten iron outflow channel.
Furthermore, the refractory material layer in the taphole area is formed by building refractory bricks along the axial direction of the molten iron outflow channel, and annular grooves are distributed on two sides of a longitudinal through seam formed by building two adjacent refractory bricks.
Furthermore, the refractory layer in the taphole area is formed by pouring a casting material.
Further, the hearth lining is a carbon brick, a combination of the carbon brick and a ceramic brick or a combination of the carbon brick and a clay brick.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model provides a blast furnace taphole structure is through setting up the ring channel on the molten iron outflow passageway, plays the fixed action to the stemming in the molten iron outflow passageway, has guaranteed the wholeness on stemming and the regional resistant material layer of taphole in the molten iron outflow passageway, has prolonged the life of taphole, and the design of ring channel still can play the effect of shutoff coal gas simultaneously, alleviates coal gas drunkenness degree and improves the tapping security.
The present invention will be described in further detail with reference to the accompanying drawings.
Drawings
FIG. 1 is a schematic view of the structure of a taphole of a blast furnace according to the present invention.
Description of reference numerals: 1. a hearth lining; 2. a refractory layer in the taphole area; 3. stemming; 4. an annular groove; 5. a taphole frame; 6. and molten iron flows out of the channel.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, are not to be construed as limiting the present invention.
The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature; in the description of the present invention, "a plurality" means two or more unless otherwise specified.
As shown in fig. 1, this embodiment provides a blast furnace taphole structure, including furnace hearth lining 1 and taphole frame 5, the centre of taphole frame 5 extends to furnace hearth lining 1 one side and is provided with molten iron outflow passageway 6, be provided with the regional resistant material layer 2 of taphole between furnace hearth lining 1 and the molten iron outflow passageway 6, be equipped with on the molten iron outflow passageway 6 along its radial annular groove 4 to the regional resistant material layer 2 extension of taphole, it has stemming 3 all to fill in molten iron outflow passageway 6 and the annular groove 4. In the embodiment, the annular groove 4 is arranged on the molten iron outflow channel 6, so that the stemming 3 in the molten iron outflow channel 6 is fixed, and the annular groove 4 extends into the refractory layer 2 in the taphole area, so that the stemming 3 in the molten iron outflow channel 6 and the refractory layer 2 in the taphole area form a whole, and thus, the stemming 3 in the molten iron outflow channel 6 cannot be easily loosened in the process of opening and blocking the taphole, and the service life of the taphole is prolonged; meanwhile, the design of the annular groove 4 can play a role in blocking gas, so that the gas fire channeling degree is reduced, and the tapping safety is improved.
Wherein, the hearth lining 1 is a carbon brick, a combination of the carbon brick and a ceramic brick or a combination of the carbon brick and a clay brick.
The embodiment that refines, according to the actual conditions of blast furnace production, the number of ring channel 4 sets up at least on the molten iron outflow passageway 6, the groove width and the groove depth of ring channel 4 all are greater than 5mm, guarantee ring channel 4 to the fixed effect of stemming 3 in the molten iron outflow passageway 6. When the annular grooves 4 are arranged in a plurality, the annular grooves 4 are distributed at intervals along the axis of the molten iron outflow channel 6, the interval distance can be determined according to the mechanical impact force of mud blocking of the mud gun machine and opening of the opening machine, and when the mechanical impact force to the stemming 3 in the molten iron outflow channel 6 is large, the interval between the annular grooves 4 can be properly reduced, so that the fixing effect of the annular grooves 4 to the stemming 3 in the molten iron outflow channel 6 is enhanced.
Specifically, in this embodiment, the refractory layer 2 in the iron notch area may be formed by laying refractory bricks or pouring by using a pouring material. When the refractory material layer 2 in the taphole area adopts a bricklaying structure of refractory bricks, the refractory bricks are bricked along the axis direction of the molten iron outflow channel 6, and at the moment, the annular grooves 4 on the molten iron outflow channel 6 can be distributed on two longitudinal through seams formed by bricking two adjacent refractory bricks, so that coal gas can be blocked by the annular grooves 4, the coal gas is prevented from leaking from the through seams of the bricklaying structure, the coal gas fire channeling degree is reduced, and the tapping safety is improved. Preferably, two sides of each longitudinal through seam of the refractory layer 2 in the taphole area are provided with annular grooves 4. And to when the regional resistant material layer 2 of taphole adopts the pouring material to pour and forms, do not have the logical seam that exists in the bricklaying structure in the regional resistant material layer 2 of taphole, stopped regional coal gas leakage of taphole basically, the number and the interval distribution form of ring channel 4 on the molten iron outflow passageway 6 can be designed according to actual demand this moment, mainly guarantee to the molten iron outflow passageway 4 in the stemming 3 fixed effect can.
To sum up, the utility model provides a this kind of blast furnace taphole structure plays the fixed action through setting up the ring channel on the molten iron outflow passageway to the stemming in the molten iron outflow passageway, has guaranteed the wholeness on stemming and the regional resistant material layer of taphole in the molten iron outflow passageway, has prolonged the life of taphole, and the design of ring channel still can play the effect of shutoff coal gas simultaneously, alleviates coal gas drunkenness degree and improves the safety of tapping.
The above examples are merely illustrative of the present invention and do not limit the scope of the present invention, and all designs identical or similar to the present invention are within the scope of the present invention.
Claims (5)
1. The utility model provides a blast furnace taphole structure, includes hearth inside lining and taphole frame, its characterized in that: the iron notch frame center is provided with the molten iron outflow passageway to furnace hearth inside lining one side extension, be provided with the regional resistant material layer of iron notch between furnace hearth inside lining and the molten iron outflow passageway, be equipped with on the molten iron outflow passageway along its radial ring channel to the regional resistant material layer extension of iron notch, it has the stemming all to fill in molten iron outflow passageway and the ring channel.
2. The blast furnace taphole structure according to claim 1, characterized by: the groove width and the groove depth of the annular groove are both larger than 5 mm.
3. The blast furnace taphole structure according to claim 1, characterized by: the annular grooves are distributed at intervals along the axis of the molten iron outflow channel.
4. The blast furnace taphole structure according to claim 3, characterized by: the refractory material layer in the taphole area is formed by building refractory bricks along the axial direction of the molten iron outflow channel, and annular grooves are distributed on two sides of a longitudinal through seam formed by building two adjacent refractory bricks.
5. The blast furnace taphole structure according to claim 3, characterized by: the refractory layer in the taphole area is formed by pouring castable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922348072.6U CN211872026U (en) | 2019-12-24 | 2019-12-24 | Blast furnace taphole structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922348072.6U CN211872026U (en) | 2019-12-24 | 2019-12-24 | Blast furnace taphole structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211872026U true CN211872026U (en) | 2020-11-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922348072.6U Active CN211872026U (en) | 2019-12-24 | 2019-12-24 | Blast furnace taphole structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211872026U (en) |
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2019
- 2019-12-24 CN CN201922348072.6U patent/CN211872026U/en active Active
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