CN216095407U - Spraying device for preventing slagging of blast furnace punching box - Google Patents
Spraying device for preventing slagging of blast furnace punching box Download PDFInfo
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- CN216095407U CN216095407U CN202122387327.7U CN202122387327U CN216095407U CN 216095407 U CN216095407 U CN 216095407U CN 202122387327 U CN202122387327 U CN 202122387327U CN 216095407 U CN216095407 U CN 216095407U
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Abstract
The utility model relates to a spraying device for preventing a blast furnace punching box from slagging, which comprises a punching box body (1), wherein two sides of the punching box body (1) are respectively provided with a connecting round hole (1 a), the inner wall of the punching box body (1) is also connected with a pair of spraying pipes (2), the spraying pipes (2) are arranged at the upper part of the punching box body (1), and each spraying pipe (2) is provided with a group of nozzle openings (2 a); one end of the spray pipe (2) is connected with a blow-down valve (3), the other end of the spray pipe penetrates through the connecting round hole (1 a) to be connected with a slag flushing pipeline (4), and the slag flushing pipeline (4) is connected with a flushing valve (5). The utility model has the advantages of eliminating the slag bonding phenomenon on the inner wall of the slag runner, avoiding the slag runner blockage caused by the falling of the slag bonding due to overlarge slag bonding, having good adaptability, being capable of carrying out pollution discharge flushing when the water quality is poor and reducing the maintenance cost.
Description
Technical Field
The utility model relates to the technical field of metallurgical equipment, in particular to a spraying device for preventing a blast furnace punching box from slagging.
Background
In the tapping process of blast furnace smelting, the slag iron is separated through the skimmer, the fire slag falls into the flushing box through the slag runner to be subjected to grain slag treatment, the fire slag is converted into the grain slag from the above, the grain slag and water enter the slag-water separation equipment through the slag runner to be separated, the grain slag is dumped to the site, and the flushing slag water is cooled through the hot water pump and then is recycled through the cold water pump through the pipeline.
The granulating treatment of the fire slag uses circulating water as a carrier, the circulating water is increased to 70-80 ℃ from about 50 ℃ before being flushed, and when the unfavorable conditions such as increased slag quantity of the blast furnace, insufficient cooling capacity of slag flushing water cooling equipment, blockage of a granulating hole plate or rough and deteriorated surface of a slag runner occur, the condition of incomplete granulation can occur in the process of converting the fire slag into the water slag, so that the phenomena of forming and slag bonding of the semi-molten water slag on the inner wall of the slag runner are caused. Along with the continuous output of the granulating slag in a semi-molten state, the deposit is increased, when the gravity of the deposit is greater than the adsorption force, the deposit falls off, and a large amount of deposit is blocked in the granulating slag channel, so that the normal production is influenced.
The blast furnace is technically improved, the yield of molten iron is increased, the utilization coefficient of the blast furnace is improved from 2.3 to 3.0, the yield of slag is increased from 1600t/d to 2100t/d, and the slag flushing cooling equipment has insufficient capacity, so that the two sides of the flushing box are seriously slag-bonded and frequently block the channel, which becomes one of the main limiting links disturbing the high yield of the blast furnace.
However, after the existing spraying device is used for a period of time, impurities in water block spraying holes due to poor water quality, so that the spraying device fails, the online treatment cannot be carried out in the production and use processes, the maintenance time is limited, and the maintenance cost is increased.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the problems of easy blockage, short service life and limited maintenance of the existing spraying device, and provides the spraying device for preventing the slag bonding of the blast furnace flushing box, which eliminates the slag bonding phenomenon on the inner wall of a slag runner, avoids the slag runner blockage caused by the falling of the slag bonding due to overlarge slag bonding, has good adaptability, can carry out pollution discharge flushing when the water quality is poor, and reduces the maintenance cost.
In order to achieve the purpose, the utility model adopts the following technical scheme:
a spray device for preventing a blast furnace punching box from slagging comprises a punching box body, wherein two sides of the punching box body are respectively provided with a connecting round hole, the inner wall of the punching box body is also connected with a pair of spray pipes, the spray pipes are arranged at the upper part of the punching box body, and each spray pipe is provided with a group of nozzle openings for cleaning the punching box and the inner wall of a slag runner;
one end of the spray pipe is connected with a blow-down valve, the other end of the spray pipe penetrates through the connecting round hole to be connected with a slag flushing pipeline, and the slag flushing pipeline is connected with a flushing valve to introduce flushing water into the spray pipe through the slag flushing pipeline.
Further, the horizontal distance between the connecting round hole and the granulating spray head is not less than 30 cm.
Furthermore, the connecting round hole is arranged at a position which is 10cm away from the lower part of the upper edge of the punching box body, and the diameter of the round hole is set to be 8 cm.
Further, the spraying pipe is horizontally arranged in the punching box body.
Further, the nozzle openings are uniformly distributed on the shower pipe along the axial direction of the shower pipe.
Furthermore, a group of supporting angle steel is fixed on the inner wall of the punching box body, and the spray pipe is connected to the supporting angle steel.
Furthermore, the spray pipes are round steel with the length of 120cm and the diameter of 5cm, the distance between every two adjacent nozzle openings is 5cm, the diameter of each nozzle opening is 0.5cm, and 20 nozzle openings are provided.
In the technical scheme of the utility model, the inner walls of the punching box and the slag runner are washed under the production condition by manufacturing the spray header and fixing the spray header on the inner wall of the punching box and then leading the slag flushing water from the slag flushing pipeline to the spray header; in addition, a sewage discharge valve and a flushing valve are added, the inner wall of the spray pipe can be flushed by opening the sewage discharge valve and the flushing valve, large-particle impurities are discharged, and the purpose of preventing the spray pipe from being blocked is achieved.
Drawings
FIG. 1 is a schematic structural diagram of a spraying device for preventing slagging of a blast furnace flushing box according to the present invention.
Detailed Description
Example 1
In order to make the present invention more clear, a spraying device for preventing the slagging of a blast furnace flushing box according to the present invention will be further described, and the specific examples described herein are only for explaining the present invention and are not intended to limit the present invention.
Referring to fig. 1, a spray set for preventing slagging scorification of a blast furnace punching box comprises a punching box body 1, and is characterized in that:
the two sides of the punching box body 1 are respectively provided with a connecting circular hole 1a, a group of supporting angle steels 6 are fixed on the inner wall of the punching box body 1, the supporting angle steels 6 are connected with a pair of horizontally arranged spray pipes 2, the spray pipes 2 are arranged at the upper part of the punching box body 1, each spray pipe 2 is provided with a group of nozzle openings 2a, and the nozzle openings 2a are uniformly distributed on the spray pipes 2 along the axial direction of the spray pipes 2 so as to be used for cleaning the punching box and the inner wall of the slag runner;
one end of the spray pipe 2 is connected with a blow-off valve 3, the other end of the spray pipe penetrates through the connecting round hole 1a to be connected with a slag flushing pipeline 4, and the slag flushing pipeline 4 is connected with a flushing valve 5 to introduce flushing water into the spray pipe through the slag flushing pipeline.
In this embodiment, the installation operation may be performed according to the following steps:
(1) respectively forming 8cm round holes at 10cm positions below the upper edges of the punching boxes at two sides, wherein the horizontal distance from the center of each round hole to the outer edge of the inner side granulating head is 30 cm;
(2) taking two round steel bars with the length of 120cm and the diameter of 5cm, forming round holes with the diameter of 0.5cm at intervals of 5cm at the bottom of each round steel bar, taking 20 round holes as spraying pipes,
(3) and welding angle steel for support at positions 5cm and 110cm away from the outer side of the center of the round hole of the punching box, placing the round steel on the support at the inner side of the punching box, and fixing the round steel by spot welding.
(4) One end of the round steel penetrates through a circular hole of the punching box to be connected with a slag flushing pipeline and used for guiding slag flushing water, and one DN40 ball valve is arranged midway and is convenient to operate; the other end is provided with a DN40 ball valve for discharging sewage.
When the round steel drainage ball valve is used, one end of the round steel is closed by the ball valve for drainage, and the other end of the round steel is normally opened by the ball valve. When the slag flushing system works, the round steel starts to spray, and the effect of flushing the inner wall of the flushing box is achieved.
When the round steel bottom round hole is blocked, the sewage discharging ball valve is opened, and the slag flushing water is opened for sewage discharging.
The device of the utility model is gradually installed and put into use from 1 month in 2020, and is completely installed in place in 3 months, and the phenomenon of groove blockage caused by bonding of two sides of the punching box is almost avoided after installation.
Compared with 2019, the ditch blockage is reduced for 32 times in 2020, the slag flushing water flow is 2600t/h in normal production, about 30% of slag flushing water after the ditch blockage overflows the slag ditch, 10-20 min is carried out each time, and the price of clean water is calculated according to 1.61 yuan/t.
The losses caused by the consumption of clean water throughout the year are 2600 × 20 × 0.3 × 32 × 1.61/60=13395.2 yuan ≈ 1.3 ten thousand yuan.
Compared with 2019, in 2020, the pressure building, the wind reduction and the oxygen control in the furnace are reduced by 5 times due to unsmooth slag iron discharge, the yield is influenced by about 400 tons, and the profit of iron per ton is calculated by 250 yuan/ton.
The molten iron loss is 400 x 250=100000 yuan =10 ten thousand yuan.
Thus, losses of about 1.3+10=11.3 ten thousand yuan are avoided all the year round.
In addition to the above embodiments, the present invention may have other embodiments. All technical solutions formed by adopting equivalent substitutions or equivalent transformations fall within the protection scope of the claims of the present invention.
Claims (7)
1. The utility model provides a prevent spray set of blast furnace punching case slagging scorification, includes punching case body (1), its characterized in that:
two sides of the punching box body (1) are respectively provided with a connecting round hole (1 a), the inner wall of the punching box body (1) is also connected with a pair of spray pipes (2), the spray pipes (2) are arranged at the upper part of the punching box body (1), and each spray pipe (2) is provided with a group of nozzle openings (2 a);
one end of the spray pipe (2) is connected with a blow-down valve (3), the other end of the spray pipe penetrates through the connecting round hole (1 a) to be connected with a slag flushing pipeline (4), and the slag flushing pipeline (4) is connected with a flushing valve (5).
2. The spraying device for preventing the slagging of the blast furnace flushing box according to claim 1, characterized in that:
the horizontal distance between the connecting round hole (1 a) and the granulating spray head is not less than 30 cm.
3. The spraying device for preventing the slagging of the blast furnace flushing box according to claim 1 or 2, characterized in that:
the connecting round hole (1 a) is arranged at a position which is 10cm away from the lower part of the upper edge of the punching box body (1), and the diameter of the round hole is set to be 8 cm.
4. The spraying device for preventing the slagging of the blast furnace flushing box according to claim 1 or 2, characterized in that:
the spraying pipe (2) is horizontally arranged in the punching box body (1).
5. The spraying device for preventing the slagging of the blast furnace flushing box according to claim 1 or 2, characterized in that:
the nozzle openings (2 a) are uniformly distributed on the spray pipe (2) along the axial direction of the spray pipe (2).
6. The spraying device for preventing the slagging of the blast furnace flushing box according to claim 1 or 2, characterized in that:
a group of supporting angle steel (6) is fixed on the inner wall of the punching box body (1), and the spray pipe (2) is connected to the supporting angle steel (6).
7. The spraying device for preventing the slagging of the blast furnace flushing box according to claim 1 or 2, characterized in that:
the spray pipes (2) are round steel with the length of 120cm and the diameter of 5cm, the distance between every two adjacent nozzle openings (2 a) is 5cm, the diameter of each nozzle opening (2 a) is 0.5cm, and the number of the nozzle openings is 20.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122387327.7U CN216095407U (en) | 2021-09-30 | 2021-09-30 | Spraying device for preventing slagging of blast furnace punching box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122387327.7U CN216095407U (en) | 2021-09-30 | 2021-09-30 | Spraying device for preventing slagging of blast furnace punching box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216095407U true CN216095407U (en) | 2022-03-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122387327.7U Active CN216095407U (en) | 2021-09-30 | 2021-09-30 | Spraying device for preventing slagging of blast furnace punching box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216095407U (en) |
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2021
- 2021-09-30 CN CN202122387327.7U patent/CN216095407U/en active Active
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