CN206799675U - A kind of blow prevents the device of whirlpool slag phenomenon in ladle tapping process - Google Patents
A kind of blow prevents the device of whirlpool slag phenomenon in ladle tapping process Download PDFInfo
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- CN206799675U CN206799675U CN201720421914.4U CN201720421914U CN206799675U CN 206799675 U CN206799675 U CN 206799675U CN 201720421914 U CN201720421914 U CN 201720421914U CN 206799675 U CN206799675 U CN 206799675U
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- 238000000034 method Methods 0.000 title claims abstract description 53
- 239000002893 slag Substances 0.000 title claims abstract description 37
- 238000010079 rubber tapping Methods 0.000 title claims abstract description 36
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 73
- 239000010959 steel Substances 0.000 claims abstract description 73
- 238000007664 blowing Methods 0.000 claims abstract description 69
- 239000007789 gas Substances 0.000 claims abstract description 69
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims abstract description 50
- 229910052786 argon Inorganic materials 0.000 claims abstract description 25
- 230000015572 biosynthetic process Effects 0.000 abstract description 12
- 238000005516 engineering process Methods 0.000 abstract description 9
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract description 8
- 238000011084 recovery Methods 0.000 abstract description 7
- 238000007667 floating Methods 0.000 abstract description 6
- 238000009826 distribution Methods 0.000 abstract description 4
- 229910052742 iron Inorganic materials 0.000 abstract description 4
- 238000000265 homogenisation Methods 0.000 abstract description 3
- 230000001737 promoting effect Effects 0.000 abstract 1
- 239000007788 liquid Substances 0.000 description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 9
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 8
- 239000012530 fluid Substances 0.000 description 6
- 230000005764 inhibitory process Effects 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000004088 simulation Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 229910052757 nitrogen Inorganic materials 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- 230000002829 reductive effect Effects 0.000 description 4
- 230000003749 cleanliness Effects 0.000 description 3
- 239000010813 municipal solid waste Substances 0.000 description 3
- 238000007670 refining Methods 0.000 description 3
- 230000001629 suppression Effects 0.000 description 3
- 238000005266 casting Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000011261 inert gas Substances 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000005672 electromagnetic field Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000000670 limiting effect Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000011112 process operation Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
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- Treatment Of Steel In Its Molten State (AREA)
Abstract
The utility model is related to a kind of blow prevents the device of whirlpool slag phenomenon in ladle tapping process, belongs to metallurgical technology field.Apparatus structure of the present utility model, by being provided with the gas hole communicated with argon-blowing device in ladle bottom, the gas hole is single hole or is capable of the porous of blowing argon gas simultaneously, and the argon-blowing device supply single hole or porous total gas flow rate are 1~100L/min；It disclosure satisfy that during steel ladle pouring, low discharge air blowing is carried out by the gas hole for wrapping bottom, upset the Flow Field Distribution of whirlpool formation in tapping process with this, thoroughly suppress the formation of whirlpool and the generation of whirlpool slag phenomenon, improve molten steel cleanness and recovery rate of iron；Larger temperature drop will not be caused to the molten steel for flowing into tundish；Overall process of tapping carries out low discharge blowing argon gas, to further promoting inclusion floating and molten steel temperature homogenization also to play a role, while molten steel will not be caused exposed.
Description
Technical field
The utility model belongs to metallurgical technology field, and in particular to one kind, which is blown, prevents whirlpool slag in ladle tapping process
The device of phenomenon.
Background technology
With the continuous development of the every profession and trades such as space flight, traffic, oil and automobile, requirement of each field to steel performance is then not
It is disconnected to improve, therefore, how steel inclusion is reduced, improve the cleanliness factor of steel, and then steel product quality is improved, obtain high-performance Gao Pin
One of the problem of matter steel are iron and steel enterprise's extensive concerns.And casting process is the important step of clean steel production, to the clean of steel
Cleanliness influence is very big, and caused whirlpool slag phenomenon has just had a strong impact on the cleanliness factor of molten steel wherein in ladle tapping process,
Molten steel is polluted, while can also bring ladle liner to be corroded, the cleaning harm such as difficulty of nozzle blocking, slag.
The specific forming process of whirlpool slag is：After the mouth of a river is opened, due to caused by molten steel ladle self gravitation
Static pressure difference not releveling, promotes molten steel constantly to flow into tundish from ladle, and liquid level starts constantly to decline；When the energy that gravity provides
When measuring insufficient, the fluid of surrounding can not fill up the fluid volume at the outflow mouth of a river in time, and liquid level just starts to be recessed；Then it is recessed
Fall into and constantly extend downward into the mouth of a river in coniform, so just gradually formed the whirlpool being observed that in people's vision.Whirlpool
Tip reach the mouth of a river at when liquid level be defined as critical altitude, when liquid level is less than critical altitude, slag is just rolled up
Enter into tundish.The whirlpool actually formed in ladle tapping process is divided to two kinds of forms, and one kind is non-rotary whirlpool of confluxing, and one
Kind is the funnel type whirlpool of rotation.Both formation mechenisms are entirely different, and its difference essentially consists in：The funnel type whirlpool ratio of rotation
Conflux the more formation conditions tangentially disturbed in whirlpool.Refining, transport and molten steel of this tangential disturbance mainly due to ladle
Temperature difference etc. the motion of tangential direction caused by reason inside molten steel be present, then under the conditions of angular momentum conservation law,
As fluid constantly flows to the mouth of a river, the distance apart from mouth of a river center is nearer, and its angular speed is bigger, so increase over time,
Fluid rotary obtain it is more and more faster, so more seriously prevent surrounding fluid go in time supplement fall to flow out the fluid volume at the mouth of a river,
Then the formation of liquid surface hollow is accelerated.Therefore, compare that the critical altitude in non-rotary whirlpool of confluxing is very low, and rotate
The critical altitude of funnel type whirlpool is very high, and slag is very serious, is the main reason for causing slag.And traditional technology is pin
For confluxing in molten steel, whirlpool has been formed, and is prevented and treated to reduce the starting point of whirlpool size, does not form machine from whirlpool
Reason is prevented and treated, therefore is not suitable for " the funnel type whirlpool " for solving rotation.In addition, the air blowing flow that traditional technology needs is relative
It is larger, it is necessary to strictly control, otherwise can cause slag and the exposed phenomenon by secondary oxidation of molten steel on the contrary.Meanwhile traditional skill
Porous breathable brick is set to need to change original ladle structure in tapping hole in art, larger also easily cause of air blowing flow is blown steel
The temperature drop of liquid is larger, and air blowing can extend the tapping time at tapping hole.
At present, prevent the technology of whirlpool slag to be broadly divided into following three class in casting process, be respectively on hide method, lower Tibetan method
With suppression method (Huang Ye：Jiangxi Metallurgical, 19 (1999), 1).Method of hiding on so-called refers to the steel retained before ladle is withdrawn in ladle
Liquid depth just stops pouring into a mould when being more than critical altitude, and the generation of whirlpool is hidden from top, but will be to sacrifice molten steel recovery rate as generation
Valency.This method is usually required to install various slag automatic detection devices, and slide gate nozzle is closed in time according to monitoring signals, but
Due to not suppressing whirlpool fundamentally, so the problem of lagging and sacrificing molten steel recovery rate still be present.So-called lower Tibetan method is
Refer to the ladle bottom position near the locality reduction mouth of a river, make critical altitude part so that all hiding within the reduction position,
Hide whirlpool from bottom, so as to reach the dual purpose for reducing slag and improving molten steel recovery rate.But the method is to ladle structure
Change larger, and easily cause dry slag, also limited by production environment and space.And suppress method and refer to take measures fundamentally
The critical altitude of whirlpool is reduced, the generation of whirlpool is postponed or prevents the formation of through funnel-form whirlpool, so as to reduce whirlpool volume
Slag phenomenon, and then the recovery rate of molten steel is improved, the method is the most commonly used one kind being studied in three kinds of methods.Common suppression
For example various valve bodies that swim of preparation method, the anti-whirlpool of electromagnetism and anti-whirlpool of blowing.Nippon has invented skimming ball (Zheng Xinyou within 1970：Steel
Iron is studied, 1 (2000), and 59), Labate M D summarize the experience that West Germany's scum rod uses in the U.S. within 1987, have invented top
(the Labate M D such as floating plug of spiral shell shape：US4799650), these methods are to be added in tapping process with molten steel liquid level one
The valve body declined is acted, density can block the mouth of a river automatically to suppress whirlpool between molten steel and slag, in the front valve shell of slag
Slag phenomenon.French IRSID research institutes proposed the whirlpool in tundish is controlled using electromagnetic principle in 1978
Design (Pierre V:France, No2443892), the proposition such as Suh J W carries out anti-whirlpool (Suh J W using magnetostatic field:ISIJ,
41 (2001), 689), and the anti-whirlpool device of rotary electromagnetic field of the design such as I.I. Da Er Dicks, these methods are to utilize magnetic field pair
Lorentz force caused by molten steel carries out contactless control to whirlpool slag phenomenon.Ono-Nakazato H are proposed in whirlpool soon
Inert gas is blown at the mouth of a river carry out anti-whirlpool (Ono-Nakazato H during formation：Journal of JSEM,7(2007),
120), the method is being to prevent being involved in for field trash to the active force of molten steel using gas.For the various valve bodies that swim,
New impurity has been introduced into molten steel；Calutron is difficult to determine due to the hot environment of actual production and whirlpool direction of rotation
Restriction, also exist only in conceptual phase；And the anti-whirlpool method of air blowing proposed at present is mainly in water when whirlpool is soon formed
Mouthful at blown, it is necessary to air-blowing quantity it is relatively large, easily cause liquid fluctuating increasing, formed slag blister cause molten steel to aoxidize,
Larger temperature drop is caused to the molten steel for flowing into tundish simultaneously.The pros and cons of more each anti-whirlpool method, are generally adopted in actual production at present
Anti- whirlpool method be still sacrifice molten steel recovery rate on hide method, mainly using slag monitoring technology to close in time the mouth of a river with
Molten steel cleanness is ensured, therefore, greatly increases ton steel cost, very big economic loss is brought to enterprise.
Utility model content
For the deficiency of various anti-whirlpool methods in existing ladle tapping process, the utility model provides a kind of blow and prevented
The device of whirlpool slag phenomenon in ladle tapping process, it is therefore intended that, pass through the bottom of the utility model device in tapping process
Portion's gas hole carries out overall process low discharge air blowing, and then upsets Flow Field Distribution when whirlpool is formed, and thoroughly eliminates the formation of whirlpool
And the generation of whirlpool slag phenomenon.
Including ladle, tundish and argon-blowing device；The ladle bottom is provided with the mouth of a river；Molten steel in the ladle leads to
Cross the mouth of a river and flow into tundish；The gas hole communicated with argon-blowing device is also provided with the ladle bottom, the gas hole is single
The porous of blowing argon gas simultaneously is capable of in hole, and argon-blowing device supply single hole or porous total gas flow rate are 1~100L/min.
The requires of the utility model opens argon-blowing device while opening ladle nozzle cast, and Argon is carried out in tapping overall process
Operation, single hole or porous while blowing argon gas are carried out by the gas hole of ladle bottom, and single hole or porous total gas flow rate are 1
~100L/min.The argon-blowing device is the known device that those skilled in the art are usually used in this area.
When wherein described air blowing flow is smaller, it can effectively eliminate whirlpool and temperature drop is very small；Described blowing gas stream
When measuring larger, it can effectively eliminate whirlpool and inclusion floating, molten steel temperature homogenization have been promoted.
Air blowing flow can also further be adjusted according to actual conditions, for example, in tapping air blowing flow can be increased early stage
38~100L/min, little particle inclusion floating and the uniform purpose of temperature, later stage is promoted gradually to subtract with molten steel amount to reach
Air blowing flow can be turned down to 1~38L/min less and reach the purpose for reducing temperature drop.
The utility model can use gas hole used in refining link, progress single hole air blowing, whirlpool slag can be showed
As having suppressed.
The preferable technical scheme of the utility model is that distance of the gas hole away from ladle center is 3/4ths of ladle radius
Within.Most preferably at ladle center, carrying out blowing here can reach optimal whirlpool suppression for described air blowing hole site
Effect.
The preferable technical scheme of the utility model is described porous air blowing, wherein a hole, which is ladle bottom, refines link
Used gas hole, distance of other gas holes away from ladle center are other gas holes within 3/4ths of ladle radius
Optimal distance away from ladle center is the half of ladle radius.
Compared with apparatus structure used in other anti-whirlpool methods, difference of the present utility model and advantage are：Molten steel Argon
Gas be in production link is smelted through frequently with, it, which is primarily due to inert gas, will not pollute molten steel, and bubble with
Effect between molten steel is very violent, has very strong change effect to the flow field in ladle, therefore, selects blowing argon gas to carry out anti-whirlpool
The pollution-free and significantly effective anti-whirlpool effect that many anti-whirlpool methods are difficult to can be realized, substantially increases receiving for molten steel
Rate.Simultaneously in the technical solution of the utility model, one scheme can apply the existing gas hole of ladle, so operation is realized
Next simple and easy, without being modified to ladle structure, cost is relatively low.And compared with the apparatus structure of other anti-whirlpools of blowing,
Apparatus structure of the present utility model is not that the active force using air blowing passive when whirlpool is soon formed causes to offset whirlpool
Liquid surface hollow, but whirlpool formation before always carry out blow upset whirlpool formation Flow Field Distribution form, active general
Rotary-type whirlpool is eliminated in rudiment.The air blowing flow that the utility model uses simultaneously is smaller, and molten steel will not be caused exposed, taps
The low discharge air blowing of overall process can also be advantageous to the little particle field trash still suffered from after further removal refines in ladle, be advantageous to
The homogenization of molten steel temperature, and avoid to flowing into the drawbacks of molten steel in tundish causes larger temperature drop.
Brief description of the drawings
The anti-whirlpool schematic diagram of Fig. 1 ladle argon-blowns：In figure, 101, whirlpool；102nd, molten steel；103rd, molten steel circulates；201st, steel
Bag；202nd, gas hole；203rd, the mouth of a river；207th, tundish.
Fig. 2 water model experimental provision schematic diagrams：In figure, 201, model ladle；202nd, gas hole；203rd, the mouth of a river；204th, valve
Door；205th, pop one's head in；206th, supersonic Doppler tachymeter；207th, model tundish；208th, flowmeter；209th, nitrogen cylinder.
Fig. 3 gas hole locations drawing：In figure, 1-8 be air blowing hole site；Wherein 1-No. 4 gas holes away from ladle center away from
From the half for ladle radius, 5,6, No. 8 distances of the gas hole away from ladle center are 3/4ths of ladle radius, No. 7
Gas hole is located at ladle center.
Fig. 4 tangential velocities and the variation relation figure of air blowing flow.
Fig. 5 whirlpools critical altitudes and gas hole change in location graph of a relation.
Fig. 6 difference air blowings hole site sets figure.
Fig. 7 whirlpools critical altitudes and molten steel/slag blanket mixed zone thickness.
Embodiment
Following non-limiting examples can make one of ordinary skill in the art that the utility model be more fully understood, but
The utility model is not limited in any way.The technology that any one skilled in the art discloses in the utility model
In the range of, carry out equivalent substitution according to the technical solution of the utility model and its inventive concept or change to belong to the utility model
Protection category.
Below in conjunction with the accompanying drawings and according to the principle of similitude carry out water model EXPERIMENTAL EXAMPLE to the utility model furtherly
It is bright.
The blowing argon gas that the utility model uses prevent water model device such as Fig. 1 of whirlpool slag phenomenon in ladle tapping process
Shown in 2, model ladle 201 is with 1 by actual 60t ladles:4 geometric proportion is manufactured, wherein it is 60cm to fill height
Water (simulation molten steel), after standing 5min, the valve 204 for opening the mouth of a river 203 carries out tapping steel, while opens nitrogen cylinder 209
Bottom nitrogen blowing (simulation argon gas) is carried out by gas hole 202 to operate, and the gas flow being passed through is controlled using flowmeter 208, and
The tangential velocity value of 205 positions of probe is measured with supersonic Doppler tachymeter 206.Pass through water model EXPERIMENTAL EXAMPLE
The stream of molten steel ladle when can illustrate the utility model to the inhibition of whirlpool in tapping process and implementation the utility model
Emotionally condition.
Embodiment 1
Using described water model experimental provision, stream is blown into by No. 1 gas hole 202 in Fig. 3 respectively in tapping process
Measure as 0~1.3L/min gases.When air blowing flow is 0L/min, i.e., the critical altitude of whirlpool is higher when not blown in tapping process
For 9.4cm, after being passed through gas, the critical altitude with the increase whirlpool of air blowing flow significantly declines.It is in air blowing flow
Constantly, the critical altitude of whirlpool is reduced to 5.5cm to 0.04L/min；When air blowing flow is 1.3L/min, the critical altitude drop of whirlpool
To minimum 1.8cm.It is consequently possible to calculate the liquid for going out the final gained of water model experiment carried out according to the utility model is received
Rate can improve about 13% or so.
According to above-mentioned experimental result, by the reduction formula Q between simulation gas and actual air-blowing quantityAr=0.901 λ-5/2QN2
The argon gas amount being blown into the actual tapping process for reach identical inhibition, wherein Q can be calculatedArFor in actual tapping process
The argon flow amount being blown into, QN2For the nitrogen amount being blown into simulation process, λ is the geometric proportion factor of model ladle and actual ladle
(Xu Hailun：University of Science ＆ Technology, Beijing's journal, 32 (2010), 843).The argon flow amount being actually blown into by being calculated should 1~
38L/min.Wherein, can be to reach good whirlpool inhibition when being blown into less argon flow amount, and be blown into relatively large
Argon flow amount when, except can preferably suppress whirlpool slag phenomenon, the flowing of molten steel 102 can also be increased.Such as Fig. 4 institutes
Show, the tangential velocity after air blowing in ladle 201 with the distribution form away from the bottom level of ladle 201 when not blowing compared with
Change, upset the velocity field of whirlpool formation, thus inhibit the formation of whirlpool；And larger air blowing flow makes in ladle 201
The tangential velocity of molten steel has increased that (tangential velocity is not average tangential velocity of the measurement point relative to the center of ladle 201, and not
Consider direction of rotation), the disturbance of molten steel is become big, promote the flowing between molten steel.Meanwhile blowing can also make molten steel tap
Formed in journey on vertical direction as shown in Figure 1 and circulate 103, this circulate can fill up as in Fig. 1 in time
The volume for the liquid surface hollow that whirlpool 103 is formed, while the upper of heat exchange between molten steel and little particle field trash can also be promoted
It is floating.
The temperature drop formula Δ T=M of molten steel is caused by blowing argon gasAr×CAr×(TSteel-TAr)/(CSteel×MSteel) can calculate and blow
The temperature drop brought after argon gas, wherein Δ T are temperature drop, MArFor argon gas mass flow, MSteelFor the quality of molten steel, CArFor the ratio of argon gas
Thermal capacitance 0.879J/ (kg. DEG C), CSteelFor specific heat capacity 1.465J/ (kg. DEG C) (Yu Haiming of molten steel：The external refining skill of converter molten steel
Art, 2011,163).Then molten steel temperature is 1600 DEG C, and when temperature of argon gas is 20 DEG C, argon gas density is 1.784kg/m3, ladle appearance
Measure as 60t, because ladle tapping process molten steel amount is constantly reduced, take the half of ladleful substantially to estimate that its temperature drop can obtain,
It is about 0.000002 DEG C to temperature drop caused by molten steel when it is 0.04L/min to be blown into argon flow amount, it is very small to ignore；And
It it is about 0.002 DEG C to temperature drop caused by molten steel when to be blown into argon flow amount be 38L/min.Therefore, the utility model is not at the mouth of a river
Molten steel is blown, and make it that argon gas gradually disperses in whole ladle, the temperature drop formed to molten steel is all relatively small.
Embodiment 2
Using described water model experimental provision, it is blown into respectively by 1-No. 8 gas holes 202 in Fig. 3 in tapping process
Flow is 0.06L/min gas, obtains the experimental result such as Fig. 5.As shown in Figure 5, whirlpool when not blown in tapping process
Critical altitude is very high, and when being blown by 1-No. 8 gas holes 202, the critical altitude of whirlpool is decreased obviously, therefore,
Gas hole 202 used when can use the ladle 201 to refine in practice, can be to obtain obvious whirlpool inhibition.And phase
Than under, the inhibition of whirlpool is best when being blown by No. 7 gas holes 202, i.e., gas hole 202 is located proximate to ladle
At 201 centers, the inhibition of whirlpool is relatively preferable.Blown simultaneously in the optimal position of gas hole 202, air blowing flow is only
For 0.06L/min when can be so that critical altitude be dropped into 1.5cm, it is seen then that further adjust air blowing flow in this position, one can be entered
Step reduces the critical altitude of whirlpool, obtains higher recovery rate of iron.
The utility model in actual applications, can also further be adjusted to air blowing flow according to actual conditions, tapped
Early stage can increase air blowing flow, promote little particle inclusion floating and the uniform purpose of temperature to reach, the later stage is with molten steel amount
Air blowing flow can be turned down by gradually decreasing, and reach the purpose for reducing temperature drop.
Embodiment 3
Using method for numerical simulation, simulate after being blown respectively by the different gas holes in Fig. 6 in tapping process
Slag situation, specific setting are as follows：I.e. air blowing flow of not blowing is 0L/min；Single hole is blown, and air blowing hole site is No. 1 air blowing
Hole, air blowing flow are 100L/min, and diplopore is blown, and air blowing hole site is No. 1 and No. 2 gas holes, and total air blowing flow is 100L/
Min (single hole flow is 50L/min)；Diplopore is blown, and air blowing hole site is No. 1 and No. 3, and total air blowing flow is 100L/min (single
Hole flow is 50L/min).Each distance of the gas hole away from the mouth of a river is R/4 (R is ladle bottom radius).Fig. 7 is analog result,
By analog result it can be found that either single hole is blown or diplopore air blowing can significantly decrease the critical altitude of whirlpool,
Inhibit the generation of whirlpool slag phenomenon.
Claims (6)
1. a kind of blow prevents the device of whirlpool slag phenomenon in ladle tapping process, it is characterised in that：Including ladle, tundish
And argon-blowing device；The ladle bottom is provided with the mouth of a river；Molten steel in the ladle flows into tundish by the mouth of a river；Also in institute
State ladle bottom and be provided with the gas hole communicated with argon-blowing device, the gas hole is single hole or is capable of the more of blowing argon gas simultaneously
Hole, the argon-blowing device supply single hole or porous total gas flow rate are 1 ~ 100L/min.
2. a kind of blow according to claim 1 prevents the device of whirlpool slag phenomenon in ladle tapping process, its feature
It is：Distance of the gas hole away from ladle center is within 3/4ths of ladle radius.
3. a kind of blow according to claim 1 or 2 prevents the device of whirlpool slag phenomenon in ladle tapping process, it is special
Sign is：The gas hole is that ladle bottom refines gas hole used in link.
4. a kind of blow according to claim 3 prevents the device of whirlpool slag phenomenon in ladle tapping process, its feature
It is：The gas hole for can simultaneously blowing argon gas it is porous when, wherein a hole be ladle bottom refine link used in blow
Stomata, distance of other gas holes away from ladle center are within 3/4ths of ladle radius.
5. a kind of blow according to claim 1 or 2 prevents the device of whirlpool slag phenomenon in ladle tapping process, it is special
Sign is：The set location of the gas hole is at ladle center.
6. a kind of blow according to claim 1 prevents the device of whirlpool slag phenomenon in ladle tapping process, its feature
It is：Described argon-blowing device supply single hole or porous total gas flow rate, tapping, early stage is 38 ~ 100 L/min, after tapping
Phase is 1 ~ 38 L/min.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720421914.4U CN206799675U (en) | 2017-04-21 | 2017-04-21 | A kind of blow prevents the device of whirlpool slag phenomenon in ladle tapping process |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201720421914.4U CN206799675U (en) | 2017-04-21 | 2017-04-21 | A kind of blow prevents the device of whirlpool slag phenomenon in ladle tapping process |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110523966A (en) * | 2019-09-25 | 2019-12-03 | 张家港广大特材股份有限公司 | A kind of double porous cores of ladle |
| CN113042699A (en) * | 2021-03-16 | 2021-06-29 | 北部湾大学 | Method for judging air blowing slag entrapment of slab crystallizer |
-
2017
- 2017-04-21 CN CN201720421914.4U patent/CN206799675U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110523966A (en) * | 2019-09-25 | 2019-12-03 | 张家港广大特材股份有限公司 | A kind of double porous cores of ladle |
| CN113042699A (en) * | 2021-03-16 | 2021-06-29 | 北部湾大学 | Method for judging air blowing slag entrapment of slab crystallizer |
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Granted publication date: 20171226 |