CN206956079U - A kind of more preferable LF stoves of degasifying effect - Google Patents
A kind of more preferable LF stoves of degasifying effect Download PDFInfo
- Publication number
- CN206956079U CN206956079U CN201720818289.7U CN201720818289U CN206956079U CN 206956079 U CN206956079 U CN 206956079U CN 201720818289 U CN201720818289 U CN 201720818289U CN 206956079 U CN206956079 U CN 206956079U
- Authority
- CN
- China
- Prior art keywords
- poking bar
- molten steel
- heater
- bodies
- stoves
- 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.)
- Expired - Fee Related
Links
- 230000000694 effects Effects 0.000 title claims abstract description 23
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims abstract description 61
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 51
- 239000010959 steel Substances 0.000 claims abstract description 51
- 239000007789 gas Substances 0.000 claims abstract description 46
- 229910052786 argon Inorganic materials 0.000 claims abstract description 31
- 238000003756 stirring Methods 0.000 claims description 27
- 239000007788 liquid Substances 0.000 claims description 9
- 241000446313 Lamella Species 0.000 claims description 7
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract description 5
- 239000001301 oxygen Substances 0.000 abstract description 5
- 229910052760 oxygen Inorganic materials 0.000 abstract description 5
- 238000007664 blowing Methods 0.000 abstract description 4
- 238000007872 degassing Methods 0.000 abstract description 3
- 238000002955 isolation Methods 0.000 abstract description 3
- 230000036632 reaction speed Effects 0.000 abstract description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 6
- 230000003647 oxidation Effects 0.000 description 4
- 238000007254 oxidation reaction Methods 0.000 description 4
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 3
- 239000001257 hydrogen Substances 0.000 description 3
- 229910052739 hydrogen Inorganic materials 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 229910052757 nitrogen Inorganic materials 0.000 description 3
- 238000007670 refining Methods 0.000 description 3
- 238000013019 agitation Methods 0.000 description 2
- 238000009749 continuous casting Methods 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000007667 floating Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000000505 pernicious effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- 230000007717 exclusion Effects 0.000 description 1
- 230000006911 nucleation Effects 0.000 description 1
- 238000010899 nucleation Methods 0.000 description 1
- 230000033764 rhythmic process Effects 0.000 description 1
Landscapes
- Manufacture And Refinement Of Metals (AREA)
- Treatment Of Steel In Its Molten State (AREA)
Abstract
The utility model discloses a kind of LF stoves, particularly a kind of more preferable LF stoves of degasifying effect.The utility model includes LF bodies of heater and is arranged on the Argon mechanism of LF bodies of heater lower end, and the Argon mechanism includes the agitating device for being arranged on the ar gas passage of the bottom of LF bodies of heater and being arranged on above ar gas passage.The utility model enables agitating device not realize rotation under external force, molten steel is stirred, so that degasifying effect of the argon gas in molten steel is more preferable, and the energy is saved, form argon gas air curtain, cause the isolation of molten steel face and oxygen, enable argon gas air curtain to conform better to the shape in molten steel face simultaneously, and because blowing upwards, can quickly take the bubble left from molten steel to furnace roof, so that whole reaction speed is accelerated, degassing efficiency is improved.
Description
Technical field
It the utility model is related to a kind of LF stoves, particularly a kind of more preferable LF stoves of degasifying effect.
Background technology
With the development of science and technology, user proposes higher and higher requirement to the quality of steel.Therefore external refining into
To modernize the important component of steel mill, it is that production clean steel ensures the important means that continuous casting is smoothed out.Wherein LF
(Lade Furnace) refining furnace is refining furnaces most widely used, that quantity is most.
After molten steel enters ladle, Ar gas is constantly blown into molten steel by the air brick of ladle bottom, formed substantial amounts of small
Argon Bubble, these minute bubbles for pernicious gas N2, O2, H2 in molten steel etc. for, equivalent to small " vacuum chamber " one by one, this
The partial pressure of other gases is almost nil in a little small " vacuum chambers ", in the other gases being dissolved in molten steel constantly to Argon Bubble
Middle diffusion；In diffusion process, the partial pressure of hydrogen and nitrogen in Argon Bubble increases with long on bubble, but bubble in molten steel by
Thermal expansion, thus the partial pressure of hydrogen and nitrogen remains to keep relatively low level, therefore continue to absorb hydrogen and nitrogen in floating-upward process, finally with
Argon Bubble to float and escape molten steel.In addition, argon gas caused molten steel agitation when floating, there is provided gas-phase nucleation and Particulate Inclusion
The chance of collision, the exclusion for being advantageous to gas and being mingled with.Therefore, using ladle bottom blowing Ar purifying methods, molten steel can be substantially reduced
The content of middle pernicious gas, hence it is evident that improve steel quality, and also have that equipment is simple, technological operation convenience, small investment, takes effect
The characteristics of fast, it is particularly suitable for the fast technique rhythm of " first refining-refining-continuous casting ".
In actual production, because LF stoves are not vacuum, clinker density ratio molten steel is low, right so as to above float over molten steel face
Molten steel and upper sheaf space form interval, and simply stirring can make it that clinker is incorporated in molten steel, easily causes the exposed of molten steel face,
Secondary oxidation of steel, cause the oxygen in molten steel and oxide inclusion increase, so as to limit the further increase of stirring intensity, and
When agitation energy is too small, then the effect of Argon stirring removal of inclusions is not had, therefore, it is necessary to a kind of mixing effect is good and not
The LF stoves of secondary oxidation can be caused.
Utility model content
The purpose of this utility model is：In view of the above-mentioned problems, to provide a kind of mixing effect good and will not for the utility model
Cause the more preferable LF stoves of degasifying effect of secondary oxidation.
The technical solution adopted in the utility model is as follows：
A kind of more preferable LF stoves of degasifying effect, including LF bodies of heater and the Argon mechanism for being arranged on LF bodies of heater lower end, it is described to blow
Argon mechanism includes the agitating device for being arranged on the ar gas passage of the bottom of LF bodies of heater and being arranged on above ar gas passage, the stirring
Device includes the poking bar coaxial with LF bodies of heater, and poking bar is provided with multiple layers of stirring blades lamella, every layer of paddle along its length
Lamella includes the stirring vane along the axisymmetrical of poking bar, is provided with multiple fumaroles along its length on stirring vane, often
Fumarole on layer stirring vane is symmetrical along the axis centre of poking bar；The top of the poking bar is provided with protrusion LF bodies of heater
The protuberance of molten steel liquid level, protuberance are circumferentially provided with air curtain hole, and the axis in air curtain hole and the angle of poking bar are 30 °；It is described
It is equipped with cavity in poking bar and stirring vane, ar gas passage passes through the cavity and jet that are arranged in poking bar and stirring vane
Hole connects with air curtain hole.
Preferably, the furnace bottom of the poking bar and LF bodies of heater is rotatablely connected, and poking bar runs through ar gas passage, the bottom of poking bar
End is connected with auxiliary whirler.
Preferably, the ar gas passage is connected by tracheae with argon gas machine.
Preferably, the protuberance is provided with liquid level detector.
In summary, by adopting the above-described technical solution, the beneficial effects of the utility model are：
The more preferable LF stoves of a kind of degasifying effect in the utility model so that agitating device can not be real under external force
Existing rotation, stirs to molten steel, so that degasifying effect of the argon gas in molten steel is more preferable, and saves the energy, forms argon
Gas air curtain, causes the isolation of molten steel face and oxygen, while enables argon gas air curtain to conform better to the shape in molten steel face, and
Because blowing upwards, the bubble left from molten steel can be quickly taken to furnace roof so that whole reaction speed is accelerated, and improves
Degassing efficiency.
Brief description of the drawings
Fig. 1 is the utility model structure chart；
Marked in figure：1- ar gas passages；2- agitating devices；3- poking bars；4- stirring vanes；5- fumaroles；6- protuberances；
7- air curtains hole；8- argon gas machines；9- aids in whirler.
Embodiment
All features disclosed in this specification, can be with any in addition to mutually exclusive feature and/or step
Mode combines.
Embodiment one
The present embodiment is as shown in figure 1, a kind of more preferable LF stoves of degasifying effect, including LF bodies of heater and is arranged on LF bodies of heater lower end
Argon mechanism, the Argon mechanism includes being arranged on the ar gas passage 1 of the bottom of LF bodies of heater and is arranged on the top of ar gas passage 1
Agitating device 2, the agitating device 2 includes the poking bar 3 coaxial with LF bodies of heater, and poking bar 3 is provided with more along its length
Layer paddle lamella, every layer of paddle lamella include the stirring vane 4 along the axisymmetrical of poking bar 3, along length on stirring vane 4
Degree direction is provided with multiple fumaroles 5, and axis centre of the fumarole 5 on every layer of stirring vane 4 along poking bar 3 is symmetrical；It is described
The top of poking bar 3 is provided with the protuberance 6 of the molten steel liquid level in protrusion LF bodies of heater, and protuberance 6 is circumferentially provided with air curtain hole 7, gas
The curtain axis in hole 7 and the angle of poking bar 3 are 30 °；Cavity, ar gas passage 1 are equipped with the poking bar 3 and stirring vane 4
Connected by the cavity being arranged in poking bar 3 and stirring vane 4 with fumarole 5 and air curtain hole 7.
In use, argon gas enters agitating device 2 by ar gas passage 1, is sprayed from fumarole 5 and air curtain hole 7,
Stirring vane 4 rotates under the drive of fumarole 5 so that agitating device 2 can not realize rotation under external force, to molten steel
Stirred, so that degasifying effect of the argon gas in molten steel is more preferable, and save the energy；The density of molten steel is very big, single
One layer of pure blade can only be stirred to the molten steel near it, and the molten steel effect of levels is had a greatly reduced quality, therefore is provided with
Multiple layers of stirring blades lamella；After molten steel is stirred, the clinker for floating over molten steel surface originally is brought in molten steel, so as to cause molten steel
Face it is exposed so that molten steel secondary oxidation, cause oxygen in molten steel and oxide inclusion increase, so as to limit stirring intensity
Further increase, therefore air curtain hole 7 is provided with, argon gas is blown out to surrounding on molten steel face, so as to form argon gas air curtain, causes steel
The isolation of liquid level and oxygen；Molten steel forms swirling after being stirred, the high center in edge is low, therefore by the axis in air curtain hole 7 with stirring
The angle for mixing rod 3 sets 30 ° so that argon gas air curtain can conform better to the shape in molten steel face, and because blowing upwards, can be with
Quickly take the bubble left from molten steel to furnace roof so that whole reaction speed is accelerated, and improves degassing efficiency.
Embodiment two
The present embodiment is further improved based on embodiment 1, as shown in figure 1, the furnace bottom of the poking bar 3 and LF bodies of heater turns
Dynamic connection, poking bar 3 run through ar gas passage 1, and the bottom of poking bar 3 is connected with auxiliary whirler 9.
In use, the rotation of agitating device 2 is leaned on merely, and mixing effect not enough, therefore may set auxiliary rotation
Machine 9 so that mixing effect is more preferable；There is molten steel in LF stoves, its temperature is very high, can cause heat expansion effect so that agitating device 2 exists
The opening increase of furnace bottom, runs through ar gas passage 1 so that the argon gas in ar gas passage 1 can pass through agitating device by agitating device 2
2 blow out with the furnace bottom opened gaps of LF bodies of heater, prevent from leaking under molten steel.
Embodiment three
The present embodiment is based on any one of embodiment 1-2 and is further improved, as shown in figure 1, the ar gas passage 1 is logical
Tracheae is crossed to connect with argon gas machine 8.
Example IV
The present embodiment is based on any one of embodiment 1-3 and is further improved, as shown in figure 1, being set on the protuberance 6
There is liquid level detector.
In use, protuberance 6 is provided with liquid level detector so that operating personnel can observe liquid level position at any time
Put, and made adjustment with this so that argon gas air curtain is more bonded with molten steel face.
It is embodiment of the present utility model as described above.The utility model is not limited to above-mentioned embodiment, anyone
The structure change made under enlightenment of the present utility model should be learnt, it is every that there is same or like skill with the utility model
Art scheme, each falls within the scope of protection of the utility model.
Claims (4)
1. a kind of more preferable LF stoves of degasifying effect, including LF bodies of heater and the Argon mechanism for being arranged on LF bodies of heater lower end, its feature exist
In：The Argon mechanism includes being arranged on the ar gas passage (1) of the bottom of LF bodies of heater and is arranged on stirring above ar gas passage (1)
Device (2) is mixed, the agitating device (2) includes the poking bar (3) coaxial with LF bodies of heater, and poking bar (3) is set along its length
There is multiple layers of stirring blades lamella, every layer of paddle lamella includes the stirring vane (4) along the axisymmetrical of poking bar (3), paddle
It is provided with multiple fumaroles (5) on piece (4) along its length, the fumarole (5) on every layer of stirring vane (4) is along poking bar (3)
Axis centre it is symmetrical；The top of the poking bar (3) is provided with the protuberance (6) of the molten steel liquid level in protrusion LF bodies of heater, protrusion
Portion (6) is circumferentially provided with air curtain hole (7), and the axis of air curtain hole (7) and the angle of poking bar (3) are 30 °；The poking bar (3)
Be equipped with cavity in stirring vane (4), ar gas passage (1) passes through the cavity that is arranged in poking bar (3) and stirring vane (4)
Connected with fumarole (5) and air curtain hole (7).
A kind of 2. more preferable LF stoves of degasifying effect according to claim 1, it is characterised in that：The poking bar (3) and LF
The furnace bottom rotation connection of body of heater, poking bar (3) run through ar gas passage (1), and the bottom of poking bar (3) is connected with auxiliary whirler
(9)。
A kind of 3. more preferable LF stoves of degasifying effect according to claim 1, it is characterised in that：The ar gas passage (1) is logical
Tracheae is crossed to connect with argon gas machine (8).
A kind of 4. more preferable LF stoves of degasifying effect according to claim 1, it is characterised in that：Set on the protuberance (6)
There is liquid level detector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720818289.7U CN206956079U (en) | 2017-07-07 | 2017-07-07 | A kind of more preferable LF stoves of degasifying effect |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720818289.7U CN206956079U (en) | 2017-07-07 | 2017-07-07 | A kind of more preferable LF stoves of degasifying effect |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206956079U true CN206956079U (en) | 2018-02-02 |
Family
ID=61383878
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720818289.7U Expired - Fee Related CN206956079U (en) | 2017-07-07 | 2017-07-07 | A kind of more preferable LF stoves of degasifying effect |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206956079U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108754074A (en) * | 2018-09-06 | 2018-11-06 | 东北大学 | The device and method being mingled with is removed in a kind of injection coupling of mechanical agitation |
| CN110273049A (en) * | 2019-06-21 | 2019-09-24 | 敬业钢铁有限公司 | A kind of argon blowing of refining furnace system |
| CN111172354A (en) * | 2020-02-28 | 2020-05-19 | 鞍钢股份有限公司 | Microbubble molten steel purification device and purification method |
| CN113143764A (en) * | 2021-04-29 | 2021-07-23 | 广州雾普康生物科技有限公司 | Herbal liquid extraction method capable of atomizing |
-
2017
- 2017-07-07 CN CN201720818289.7U patent/CN206956079U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108754074A (en) * | 2018-09-06 | 2018-11-06 | 东北大学 | The device and method being mingled with is removed in a kind of injection coupling of mechanical agitation |
| CN108754074B (en) * | 2018-09-06 | 2019-06-07 | 东北大学 | The device and method being mingled with is removed in a kind of blowing coupling of mechanical stirring |
| CN110273049A (en) * | 2019-06-21 | 2019-09-24 | 敬业钢铁有限公司 | A kind of argon blowing of refining furnace system |
| CN111172354A (en) * | 2020-02-28 | 2020-05-19 | 鞍钢股份有限公司 | Microbubble molten steel purification device and purification method |
| CN111172354B (en) * | 2020-02-28 | 2021-11-12 | 鞍钢股份有限公司 | Microbubble molten steel purification device and purification method |
| CN113143764A (en) * | 2021-04-29 | 2021-07-23 | 广州雾普康生物科技有限公司 | Herbal liquid extraction method capable of atomizing |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180202 |