CN109059532A - A kind of anti-oxidation high temperature process furnances fire door structure - Google Patents
A kind of anti-oxidation high temperature process furnances fire door structure Download PDFInfo
- Publication number
- CN109059532A CN109059532A CN201810901183.2A CN201810901183A CN109059532A CN 109059532 A CN109059532 A CN 109059532A CN 201810901183 A CN201810901183 A CN 201810901183A CN 109059532 A CN109059532 A CN 109059532A
- Authority
- CN
- China
- Prior art keywords
- brick
- fire door
- lower layer
- upper layer
- high temperature
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 15
- 230000003064 anti-oxidating effect Effects 0.000 title claims abstract description 9
- 239000011449 brick Substances 0.000 claims abstract description 62
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims abstract description 34
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 19
- 239000010959 steel Substances 0.000 claims abstract description 19
- 229910052786 argon Inorganic materials 0.000 claims abstract description 17
- 239000007789 gas Substances 0.000 claims abstract description 15
- 238000005275 alloying Methods 0.000 claims abstract description 7
- 239000002893 slag Substances 0.000 claims abstract description 7
- 230000003647 oxidation Effects 0.000 abstract description 2
- 238000007254 oxidation reaction Methods 0.000 abstract description 2
- 230000001681 protective effect Effects 0.000 abstract description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 8
- 238000005070 sampling Methods 0.000 description 7
- 238000003723 Smelting Methods 0.000 description 5
- 238000007670 refining Methods 0.000 description 5
- 238000003756 stirring Methods 0.000 description 5
- 229910052757 nitrogen Inorganic materials 0.000 description 4
- 239000003708 ampul Substances 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- 238000006213 oxygenation reaction Methods 0.000 description 3
- 239000010453 quartz Substances 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- GALOTNBSUVEISR-UHFFFAOYSA-N molybdenum;silicon Chemical compound [Mo]#[Si] GALOTNBSUVEISR-UHFFFAOYSA-N 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 238000009628 steelmaking Methods 0.000 description 2
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
- 241000233855 Orchidaceae Species 0.000 description 1
- 229910000639 Spring steel Inorganic materials 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012840 feeding operation Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 239000011733 molybdenum Substances 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 238000009853 pyrometallurgy Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B1/00—Shaft or like vertical or substantially vertical furnaces
- F27B1/10—Details, accessories, or equipment peculiar to furnaces of these types
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Treatment Of Steel In Its Molten State (AREA)
- Vertical, Hearth, Or Arc Furnaces (AREA)
Abstract
The invention discloses a kind of anti-oxidation high temperature process furnances fire door structure design, the refractory brick including upper layer and lower layer different structure, upper layer brick is provided with slit, is used as argon gas export, and lower layer's brick is provided with circular hole, for deoxidation, alloying plus slag operation；Upper layer brick and lower layer's brick are separable；Fire door is sealed using refractory brick, refractory brick is resistant to fire door high temperature, and using double-layer brick theory, upper layer brick meets argon gas export needs, and lower layer's brick can reduce the contact area of molten steel and air.This anti-oxidation high temperature process furnances fire door structure design can maintain good protective atmosphere in burner hearth when carrying out experimental implementation, reduce molten steel oxidation.
Description
Technical field
The present invention relates to a kind of anti-oxidation high temperature process furnances fire door structures, for preventing when the steel-making of vertical high temperature tube furnace
Molten steel is polluted by air secondary.
Background technique
The fire door of existing vertical high temperature tube furnace is usually the flange of logical recirculated cooling water, and the connect conduit of flange is burner hearth
The outlet of interior argon gas.It is related to deoxidation, alloying plus the operation such as refining slag, sampling, stirring in pyrometallurgy experiment, needs
Flange is opened, but this process fire door opens wide in air completely.Strict control oxygen content, nitrogen content are needed for smelting process
Steel grade for, this process causes experimental result deviation occur or can not analyze.
Summary of the invention
In order to reduce deoxidation in vertical high temperature tube furnace smelting process, alloying plus the operation such as refining slag, sampling, stirring
When fire door open wide bring molten steel substantially oxygenation nitrogen pick-up problem, the present invention provides a kind of anti-oxidation fire door structure design, this sets
The double-deck refractory brick is arranged in former tube furnace fire door in meter, has not only been avoided that fire door opened wide completely in experimental implementation, but can to molten steel into
Row deoxidation, alloying plus the operation such as refining slag, sampling, stirring, can substantially mitigate the secondary oxidation of molten steel.
The technical solution adopted by the present invention to solve the technical problems is that fire door is divided into using the double-deck refractory brick covering
The length and width of layer brick and lower layer's brick, upper layer brick and lower layer's brick can be depending on the fire door of vertical high temperature furnace, and length and width can be 60
Within the scope of~120mm, high 20~40mm.Upper layer brick is provided with gap in bottom middle position, and the gap and brick are isometric, and width can be
It is highly 2.5~3.5mm within the scope of 3~7mm, the outlet as argon gas.Wherein the center of lower layer's brick be provided with diameter be 15~
35mm circular hole, as feed opening；In the heating of vertical high temperature tube furnace, fire door is covered using double-layer brick, when at high temperature will be into
When row deoxidation, alloying plus the operation such as refining slag, stirring, sampling, the flow of protective gas is doubled, upper layer brick is opened,
Material required for being added by the circular hole of lower layer's refractory brick into molten steel carries out metallurgical operations, after end of operation, uses upper layer
Refractory brick covers lower layer's brick.The circular hole at lower layer's refractory brick center can largely solve in experimental implementation that fire door is completely open to ask
Topic, the fire door open area after design can reduce by 93.75~97.87%.
The invention has the advantages that the present invention, when without experimental implementation, double-layer brick covers fire door, upper layer brick is equipped with
Argon gas export；Upper layer brick is opened when carrying out experimental implementation, lower layer's refractory brick can reduce fire door open area, effectively reduce molten steel
Oxygenation nitrogen pick-up phenomenon, improve the precision and accuracy of experiment.It is the vertical silicon molybdenum resistance-heated furnace smelting of 90mm with boiler tube diameter
It for refining 55SiCr spring steel, is covered using double-deck 90mm × 90mm × 30mm aluminum oxide refractory brick, refractory brick has banned method
Orchid, it is convenient to bring to charging, and can high temperature resistant, recirculated water can be cancelled.It is 20mm circular hole that wherein the center of lower layer's brick, which is provided with diameter,
As feed opening, which can largely solve the problems, such as that fire door is completely unlimited in experimental implementation, and fire door is exposed to air
In contact area by initial 63.6cm2It reduces to 3.14cm2, fire door open area slip is up to 95%.Feeding operation after design
Only increase T.O. in steel by 3ppm, is greatly reduced before relatively designing.
Detailed description of the invention
The present invention is further described with case study on implementation with reference to the accompanying drawing.
Fig. 1 is firebrick structure schematic diagram in upper layer of the present invention,
The upper layer Fig. 1 firebrick structure, unit mm (a) main view, (b) left view, (c) top view
According to the boiler tube diameter of shaft (tower) furnace, the length of upper layer refractory brick can be 60~120mm, and width is 60~120mm, a height of 20
~40mm.The slit of argon gas export a length of 60~120mm, wide 3~7mm, a height of 2.5mm.
Fig. 2 is lower layer's firebrick structure schematic diagram of the present invention,
Fig. 2 lower layer firebrick structure, unit mm (a) main view, (b) left view, (c) top view
According to the boiler tube diameter of shaft (tower) furnace, the length of lower layer's refractory brick can be 60~120mm, and width is 60~120mm, a height of 20
~40mm.According to charging number, charging Circularhole diameter can be 15~35mm.
In Fig. 1,1 is argon gas export；In Fig. 2,2 be experimentation charging circular hole.
Fig. 3 is overall structure of the present invention, (a) main view, (b) left view, (c) top view
Wherein 1 is argon gas export, and 2 be experimentation charging circular hole, and 3 be upper layer brick, and 4 be lower layer's brick.
Specific embodiment
[case study on implementation 1]
The anti-oxidation tube furnace fire door structure is designed as setting upper layer and lower layer refractory brick, and refractory brick is in bottom at the middle and upper levels
Equipped with argon gas export 1, lower layer's refractory brick is equipped with the circular hole 2 of charging.When the heating of silicon molybdenum resistance-heated furnace, covered using double-layer brick
Lid fire door, the argon gas in burner hearth is discharged into atmosphere by argon gas export 1 at this time；When furnace temperature rise to steel-making at a temperature of carry out deoxidation,
When the operation such as alloying plus slag, upper layer brick is opened, adds metallurgical raw material to molten steel through the circular hole of lower layer's brick；To end of operation
When, lower layer's brick is covered with upper layer brick.
[case study on implementation 2]
Since vertical tube furnace is not with agitating function, when carrying out smelting operation, in order to keep molten steel component and temperature uniform,
Need to be stirred operation.Concrete operations are first to be twice argon flow increasing, open upper layer brick with clip, utilize molybdenum bar
It is to be mixed to finish across the circular hole insertion molten steel bath stirring of lower layer's refractory brick, upper layer brick is covered with clip, argon flow is extensive
Multiple initial value, can play whipping process molten steel not by the effect of oxygenation nitrogen pick-up.
[case study on implementation 3]
In vertical high temperature furnace iron and steel smelting, it is related to that process sample is taken to operate, in order to prevent the oxygen of molten steel in sampling process
Change, is also designed using the fire door.Concrete operations are first to be twice argon flow increasing, using soft between quartz ampoule and needle tubing
Pipe, which is connected, is used as sampler.When sampling, upper layer brick is opened with clip, the circular hole that quartz ampoule passes through lower layer's refractory brick is inserted into steel
A certain amount of molten steel is extracted, then takes out quartz ampoule according to experiment needs in liquid molten bath.Upper layer brick is covered with clip, is completed
Sampling.
Claims (2)
1. a kind of anti-oxidation high temperature process furnances fire door structure, which is characterized in that the refractory brick including upper layer and lower layer different structure,
Upper layer brick is provided with slit, is used as argon gas export, and lower layer's brick is provided with circular hole, for deoxidation, alloying plus slag operation；Upper layer brick with
Lower layer's brick is separable；Fire door is sealed using refractory brick, refractory brick is resistant to fire door high temperature, and using double-layer brick theory, upper layer brick meets
Argon gas export needs, and lower layer's brick can reduce the contact area of molten steel and air.
2. anti-oxidation tube furnace fire door structure according to claim 1, which is characterized in that when the double-deck refractory brick covers
When, the argon gas export of upper layer refractory brick is communicated with the circular hole of lower layer's refractory brick.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810901183.2A CN109059532B (en) | 2018-08-09 | 2018-08-09 | Anti-oxidation high-temperature tube furnace mouth structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810901183.2A CN109059532B (en) | 2018-08-09 | 2018-08-09 | Anti-oxidation high-temperature tube furnace mouth structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109059532A true CN109059532A (en) | 2018-12-21 |
| CN109059532B CN109059532B (en) | 2023-11-07 |
Family
ID=64683129
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810901183.2A Active CN109059532B (en) | 2018-08-09 | 2018-08-09 | Anti-oxidation high-temperature tube furnace mouth structure |
Country Status (1)
| Country | Link |
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| Publication number | Publication date |
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| CN109059532B (en) | 2023-11-07 |
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