CN203559066U - Blow-in taphole structure of blast furnace - Google Patents
Blow-in taphole structure of blast furnace Download PDFInfo
- Publication number
- CN203559066U CN203559066U CN201320735572.5U CN201320735572U CN203559066U CN 203559066 U CN203559066 U CN 203559066U CN 201320735572 U CN201320735572 U CN 201320735572U CN 203559066 U CN203559066 U CN 203559066U
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- China
- Prior art keywords
- blast furnace
- compressed air
- stove
- air pipe
- iron mouth
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- Expired - Fee Related
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Abstract
The utility model discloses the field of steelmaking, and particularly relates to a blow-in taphole structure of a blast furnace, which enables a taphole to smoothly open. The blow-in taphole structure of the blast furnace comprises a blast furnace wall, a taphole in the blast furnace wall, and a compressed air tube, wherein the compressed air tube is pre-buried into the taphole and penetrates through two sides of the blast furnace wall; an external furnace section of the compressed air tube is arranged at the outer side of the blast furnace wall; an internal furnace section of the compressed air tube is arranged at the inner side of the blast furnace wall. Compressed air is introduced to the blast furnace by the compressed air tube in the blow-in process, so that the pressure inside the blast furnace is increased so as to smoothly open the taphole and avoid subsequent problems. A plurality of vent holes are formed in the internal furnace section of the compressed air tube, so that the compressed air enters inside the blast furnace evenly and stably, and the effect on the inside of the blast furnace caused by airflow is avoided. A flame retardant coating also can be cast on the outer wall of the internal furnace section, so that the service life of the compressed air tube can be prolonged.
Description
Technical field
The utility model relates to field of steel-making, especially a kind of blast furnace opening iron mouth structure.
Background technology
After new blast furnace opening, the first stove iron iron mouth is often difficult to open, even if open also consuming time longlyer, has Steel Plant to open and do not wear because of the first stove iron iron mouth, and causes blow-on to have some setbacks, and even occurs security incident.
The major cause that new blast furnace the first stove iron mouth difficulty is opened is that newly to open blast furnace hearth temperature low, and molten iron is in cupola well bottom adhesive.What adopt at present is to drill by taphole drilling machine, but after blow-on, the first stove iron mouth is difficult to open and wears, and length consuming time, probably affects the whole process of blast furnace opening, even has the slag iron of production not discharge in time, burns the major safety risks that on the contrary from wind, cinder notch.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of blast furnace opening iron mouth structure that iron mouth can be opened smoothly wear.
The utility model solves the blast furnace opening iron mouth structure that its technical problem adopts, comprise blast furnace wall and Tie Kou, described iron mouth is arranged in blast furnace wall, also comprise compressed air pipe, described compressed air pipe is pre-buried to be arranged in iron mouth, described compressed air pipe runs through the both sides of described blast furnace wall, and what compressed air pipe was positioned at blast furnace fireplace outside is the outer section of stove, and what compressed air pipe was positioned at blast furnace fireplace inner side is stove inner segment.
Further, on the stove inner segment of described compressed air pipe, be evenly provided with several ventilating pits.
Further, the angle a of described compressed air pipe and described blast furnace wall is 75 °～85 °.
Further, in the outer section of described stove, be provided with tensimeter.
Further, in the outer section of described stove, be also connected with pressure regulation arm, on described pressure regulation arm, valve be installed.
Further, on the inlet mouth of the outer section of described stove, adiabatic joint is installed.
Further, on the stove inner segment outer wall of described compressed air pipe, built one deck flame retardant coating.
The beneficial effects of the utility model are: when blow-on, utilize compressed air pipe to pass into pressurized air in blast furnace, high furnace pressure is increased, thereby beat smoothly tapping outlet, avoid follow-up problem to occur.Stove inner segment at compressed air pipe is offered ventilating pit, makes pressurized air enter into blast furnace more evenly mild, avoids air-flow to impacting in blast furnace.On the outer wall of stove inner segment, one deck flame retardant coating can also be built, the work-ing life of compressed air pipe can be improved like this.Pressure regulation arm in the outer section of stove can auxiliary adjustment pressure, makes the many a kind of means of adjusting of pressure.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Component, position and numbering in figure: blast furnace wall 1, iron mouth 2, compressed air pipe 3, the outer section 4 of stove, stove inner segment 5, pressure regulation arm 6.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail.
As shown in Figure 1, the utility model comprises blast furnace wall 1 and iron mouth 2, described iron mouth 2 is arranged in blast furnace wall 1, also comprise compressed air pipe 3, described compressed air pipe 3 is pre-buried to be arranged in iron mouth 2, described compressed air pipe 3 runs through the both sides of described blast furnace wall 1, and what compressed air pipe 3 was positioned at blast furnace wall 1 stove outside is the outer section 4 of stove, and what compressed air pipe 3 was positioned at blast furnace wall 1 stove inner side is stove inner segment 5.Compressed air pipe 3 is pre-buried at iron mouth before blast furnace opening, at iron mouth 2 passages, builds mud and overlaps pre-buried.Compressed air pipe 3 need be communicated in blast furnace, and its section of being positioned at blast furnace is stove inner segment 5, and the one end being positioned at outside blast furnace is the outer section 4 of stove.When blow-on, utilize compressed air pipe to pass into pressurized air in blast furnace, high furnace pressure is increased, thereby beat smoothly tapping outlet, avoid follow-up problem to occur.Should be noted in use details: the minimum maintenance of compressed air pressure 0.6Mpa between the usage period, during forbidding, die, forbid to put the front pressure release of iron; When the slag iron amount in cupola well reaches a certain amount of, just can closes compression air door, beat tapping outlet valve and put iron.Outside stove, in section 4, can be provided with tensimeter, thus real-time observation pressure condition.
In order to relax air-flow, as shown in Figure 1, on the stove inner segment 5 of described compressed air pipe 3, be evenly provided with several ventilating pits.A plurality of ventilating pits can increase gas and enter area, avoid occurring stronger air-flow, so just can prevent the environment in interference in air flow blast furnace.
Compressed air pipe 3 is generally made as 75 °～85 ° with the angle a of described blast furnace wall 1.Can obtain best air inlet angle like this.
Concrete, as shown in Figure 1, outside stating stove, in section 4, be also connected with pressure regulation arm 6, on described pressure regulation arm 6, valve is installed.Utilize valve can control pressure regulation arm 6 free air deliveries, can utilize like this pressure release effect of pressure regulation arm 6 to make gaseous tension keep best.
Outside stove, on the inlet mouth of section 4, adiabatic joint can be installed.Inlet pipe is connected with the outer section 4 of stove of compressed air pipe 3, and after using adiabatic joint, inlet pipe, by not being subject to the temperatures involved of the outer section 4 of stove, therefore can be used comparatively cheap plastic composite pipe, cost-saving.
In order to increase the work-ing life of compressed air pipe 3, on stove inner segment 5 outer walls of described compressed air pipe 3, built one deck flame retardant coating.Flame retardant coating can avoid compressed air pipe 3 directly to contact with high temperature, should offer with stove inner segment 5 upper vent holes to the hole of mating on flame retardant coating, can obtain so best air inlet effect.
Claims (7)
1. blast furnace opening iron mouth structure, comprise blast furnace wall (1) He Tiekou (2), described iron mouth (2) is arranged in blast furnace wall (1), it is characterized in that: also comprise compressed air pipe (3), described compressed air pipe (3) is pre-buried to be arranged in iron mouth (2), described compressed air pipe (3) runs through the both sides of described blast furnace wall (1), what compressed air pipe (3) was positioned at blast furnace wall (1) stove outside is the outer section of stove (4), and what compressed air pipe (3) was positioned at blast furnace wall (1) stove inner side is stove inner segment (5).
2. blast furnace opening iron mouth structure as claimed in claim 1, is characterized in that: on the stove inner segment (5) of described compressed air pipe (3), be evenly provided with several ventilating pits.
3. blast furnace opening iron mouth structure as claimed in claim 1, is characterized in that: described compressed air pipe (3) is 75 °～85 ° with the angle a of described blast furnace wall (1).
4. blast furnace opening iron mouth structure as claimed in claim 1, is characterized in that: in the outer section of described stove (4), be provided with tensimeter.
5. blast furnace opening iron mouth structure as claimed in claim 1, is characterized in that: in the outer section of described stove (4), be also connected with pressure regulation arm (6), on described pressure regulation arm (6), valve be installed.
6. blast furnace opening iron mouth structure as claimed in claim 1, is characterized in that: on the inlet mouth of the outer section of described stove (4), adiabatic joint is installed.
7. the blast furnace opening iron mouth structure as described in claim as arbitrary in claim 1 to 6, is characterized in that: on stove inner segment (5) outer wall of described compressed air pipe (3), built one deck flame retardant coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320735572.5U CN203559066U (en) | 2013-11-19 | 2013-11-19 | Blow-in taphole structure of blast furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320735572.5U CN203559066U (en) | 2013-11-19 | 2013-11-19 | Blow-in taphole structure of blast furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203559066U true CN203559066U (en) | 2014-04-23 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320735572.5U Expired - Fee Related CN203559066U (en) | 2013-11-19 | 2013-11-19 | Blow-in taphole structure of blast furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203559066U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105838835A (en) * | 2016-06-22 | 2016-08-10 | 山东钢铁股份有限公司 | Blast furnace blowing-in iron notch device and blast furnace blowing-in iron notch method |
-
2013
- 2013-11-19 CN CN201320735572.5U patent/CN203559066U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105838835A (en) * | 2016-06-22 | 2016-08-10 | 山东钢铁股份有限公司 | Blast furnace blowing-in iron notch device and blast furnace blowing-in iron notch method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PP01 | Preservation of patent right |
Effective date of registration: 20171016 Granted publication date: 20140423 |
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| PP01 | Preservation of patent right | ||
| PD01 | Discharge of preservation of patent |
Date of cancellation: 20190124 Granted publication date: 20140423 |
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| PD01 | Discharge of preservation of patent | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140423 Termination date: 20191119 |
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| CF01 | Termination of patent right due to non-payment of annual fee |