CN107447075B - A kind of ladle wire feeding auxiliary device and ladle wire feeding method - Google Patents
A kind of ladle wire feeding auxiliary device and ladle wire feeding method Download PDFInfo
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- CN107447075B CN107447075B CN201610377551.9A CN201610377551A CN107447075B CN 107447075 B CN107447075 B CN 107447075B CN 201610377551 A CN201610377551 A CN 201610377551A CN 107447075 B CN107447075 B CN 107447075B
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- ladle
- wire feeding
- auxiliary device
- molten steel
- feeding auxiliary
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/0056—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00 using cored wires
Abstract
A kind of ladle wire feeding auxiliary device and ladle wire feeding method, including ladle and the wire feeder being placed on workbench, the tinsel delivery line of wire feeder is connect with the ladle wire feeding auxiliary device that a Liftable type is arranged, tinsel is transferred in the ladle wire feeding auxiliary device by tinsel delivery line, tinsel is directly injected into inside the molten steel in ladle by the ladle wire feeding auxiliary device again, one ventilating dust-arrester with vacuum evacuation device is set on workbench, which connect with the inside of ladle wire feeding auxiliary device and pipeline communicates.Tinsel is fed directly into molten steel by the present invention, is avoided silk thread and is just melted and due to steel slag blocked up the phenomenon that causing silk thread to cannot be introduced into molten steel, improve recovery rate not entering molten steel；Gas and flue dust are discharged into ventilating dust-arrester, reduce environmental pollution；Vacuum evacuation device changes the metallurgical reaction condition of molten steel ladle, improves partial metallurgical reaction speed, prevents useful element oxidational losses and improve yield of alloy.
Description
Technical field
The present invention relates to the steel-making external refining equipments and technology field in a kind of steel production industry, more particularly to one kind
Silk thread is fed directly into the ladle wire feeding auxiliary device and ladle wire feeding method of molten steel, can effectively improve and feed silk recovery rate, and
It reduces environmental pollution.
Background technique
Molten iron smelting at molten steel and is transported to conticaster by a series of operation by modern steel-smelting technology, and molten steel passes through company
Casting machine produces qualified slab.External refining is the important component of steel making working procedure, serves as conticaster and first furnace (converter
Or electric furnace) between buffer, provide temperature, ingredient and time suitable molten steel to conticaster.
And there are ladle wire feeding process, the processes in above-mentioned external refining production process specifically: for some
Very active alloy curves steel pipe using by steel band, and alloy, which is placed in steel pipe, is made core-spun yarn or solid wire, then by feeding
Core-spun yarn is continuously fed into inside molten steel by silk mechanism.Currently, domestic each steel production enterprise is led in the process of ladle wire feeding
Frequently with using a certain height on molten steel liquid level as basic point, the method that silk thread is inserted directly by molten steel by wire feeder, by
It is inserted into molten steel certain depth in steel band, air can be completely cut off, the recovery rate of alloying element can greatly improve, this technology mesh
It is preceding to be used widely in steel mill.Than the alloy that more typical core-spun yarn product is calcium.However, execute-in-place worker through it is too long when
Between observation and statistics discovery, since the operation level etc. of the defect for feeding silk equipment and operator under the prior art is various
The silk thread recovery rate of reason, ladle wire feeding process is not always high, and concrete reason is as follows:
1. silk thread is inserted directly into molten steel by wire feeder, a part of silk thread when not yet entering the molten steel liquid level stage just
Melted in steel slag；
2. various situations cause the thickness of steel slag on molten steel liquid level upper layer high, and steel slag hardness is big, leads to the frequent nothing of silk thread
Method is inserted into molten steel liquid level hereinafter, but by the upper surface for accumulating in steel slag in heaps in silk thread insertion process repeatedly.
Not only the above problem results in the silk equipment of feeding under the prior art and causes a large amount of wastes of silk thread, while also influencing
Quality after the processing time of molten steel and molten steel finished product.
In addition, the silk thread fed in common ladle wire feeding treatment process into molten steel under the prior art is a kind of silico-calcium
Line, because the fusing point of calcium is low, vapour pressure is high, if directly calcium containing alloy is added in molten steel, calcium will vaporize quickly, and recovery rate is very
Low, general only 5% is even lower, but feeds silk mode using core-spun yarn, can be improved to 15% or higher.Deliming series is closed
Except gold, including the active metals such as rare earth alloy, magnesium alloy and need very Precise components hit alloying element such as aluminium,
Boron, chromium, titanium etc. had core-spun yarn product.By taking silicon-calcium wire as an example, calcium which will be made of Ca, Ca-Si, Ca-Fe etc.
Core-spun yarn or solid calcium alloy wire is made in alloy sheetmetal package, then is inserted by the wire feeder under the prior art with certain speed
Enter molten steel.Can be simultaneously with the stirring of inert gas (argon gas) during entirely feeding silk, its object is to increase Ca steam bubble
Residence time and the good mixed effect of formation in molten steel.
But by field measurement data feedback, the gasification temperature of Ca is 1480 ° or so, and refined molten steel temperature is at 1580 °
~1600 °.These gaps cause to feed the metal Ca in molten steel, will be gasified immediately at the initial stage of contact molten steel, volume is acute
Strong expansion, so that a large amount of calcium steam are directly evaporate into air.It largely floats since calcium steam has little time dissolution reaction, it is subsidiary
Intense reaction cause liquid steel level exposed and molten steel made to inhale nitrogen, this is also one of the reason of causing recovery rate to substantially reduce.Together
When acutely seething and cause expulsion events due to molten steel, cause calcium steam to influence whether entire working environment, damage operator
Health.
In conclusion existing, there is an urgent need to a kind of novel ladle wire feeding auxiliary device and matched ladle wire feeding method, energy
Effectively improve and feed silk recovery rate, improve condition when feeding silk, reducing splash and calcium steam and escape, to reduce smelt ton steel at
Originally, improve steel quality and reduce environmental pollution and be of great practical significance.
Summary of the invention
In order to solve silk thread recovery rate present in ladle wire feeding auxiliary device and ladle wire feeding method under the prior art
Low, splash and calcium steam escape processing times and the molten steel for leading to feed poor strand part, a large amount of wastes of silk thread and influence molten steel
The problem of quality after finished product, the present invention provides a kind of ladle wire feeding auxiliary device and ladle wire feeding methods, can effectively mention
Height feeds silk recovery rate and reduces environmental pollution.The specific structure and implementation method of the device of the invention part are as described below:
A kind of ladle wire feeding auxiliary device, including ladle and the wire feeder being placed on workbench, it is characterised in that:
The tinsel delivery line of the wire feeder is connect with the ladle wire feeding auxiliary device that a Liftable type is arranged, gold
Belong to silk thread delivery line tinsel is transferred in the ladle wire feeding auxiliary device, the ladle wire feeding auxiliary device is again by wire
Line is directly injected into inside the molten steel in ladle.
A ventilating dust-arrester is provided on the workbench, the ventilating dust-arrester by a dust removal by ventilation pipe with
The inside of one ladle wire feeding auxiliary device connects, and the ventilating dust-arrester is communicated with ladle wire feeding auxiliary device pipeline.
A kind of ladle wire feeding auxiliary device according to the present invention, which is characterized in that the ladle wire feeding auxiliary device packet
Include connecting bracket, immersion hood and guiding tube, wherein the connecting bracket is fixedly connected with tinsel delivery line, in the connection branch
The immersion hood made of refractory material of a vertical configuration is fixedly installed in the frame body of frame, which is upper end closed, lower end
The inverted U of open type designs, and offers a through-hole in the closed upper end of immersion hood, guiding tube is consolidated by the perpendicular shape of the through-hole
It is fixed to be arranged in immersion hood, and the guiding tube is communicated with tinsel delivery line pipeline, that is, wire feeder is by metal steel wire from metal
Silk thread delivery line is transferred in the guiding tube, then so that it is submerged into the steel in ladle by falling entire ladle wire feeding auxiliary device
Inside water.
A kind of ladle wire feeding auxiliary device according to the present invention, which is characterized in that setting in the ventilating dust-arrester
There is vacuum evacuation device, which is connected to by vacuum evacuation device pipeline with the immersion hood of ladle wire feeding auxiliary device.
Herein designed for unlatching vacuum evacuation device to be formed in the immersion hood of ladle wire feeding auxiliary device certain
Vacuum state, change the metallurgical reaction condition of molten steel ladle, improve partial metallurgical reaction speed, prevent useful element from aoxidizing
Loss and raising yield of alloy.
Vacuum-pumping pipeline and dust removal by ventilation pipe are the pipeline of stretchable formula, make it can be as ladle wire feeding auxiliary device is same
Step lifting, keeps pipeline unimpeded.
A kind of ladle wire feeding method, based on a kind of above-mentioned ladle wire feeding auxiliary device, the specific steps of which are as follows:
1) when carrying out ladle wire feeding operation, the bottom Argon of ladle is carried out first, and the argon gas of certain pressure and flow passes through
The air brick of ladle bottom is blown into molten steel, and under the driving of argon gas, the molten steel surface above argon blowing hole is formed without slag area；
2) immersion hood for being located at liftable ladle wire feeding auxiliary device right above ladle declines and is inserted into molten steel, makes it
Inside is substantially isolated with atmospheric environment, forms a more closed inert gas environment, the molten steel liquid level shape in immersion hood
At the extremely low pure region of steel slag content；
3) it carries out feeding silk operation, due to not having Slag Layer influence, tinsel passes through the tinsel delivery line of wire feeder
It is transmitted into the guiding tube of ladle wire feeding auxiliary device, and since immersion hood at this time is in step 2) in insertion molten steel,
It is equal to the inside that tinsel has been fed directly into molten steel, avoids silk thread and just melt and due to steel not entering molten steel
Slag blocked up the phenomenon that causing silk thread to cannot be introduced into molten steel, and immersion hood has blocked tinsel and has entered the molten steel spray generated when molten steel
It splashes；
4) start ventilating dust-arrester simultaneously in step 3), the gas and flue dust that generate when feeding silk be discharged into dust pelletizing system,
It reduces environmental pollution, prevents the damage to personnel health.
A kind of ladle wire feeding method according to the present invention, which is characterized in that vacuum evacuation device is opened in the step 3),
Since the vacuum evacuation device is connected to by vacuum evacuation device pipeline with the immersion hood of ladle wire feeding auxiliary device, vacuum means are opened
Certain vacuum state can be formed in immersion hood by setting, and change the metallurgical reaction condition of molten steel ladle, and it is anti-to improve partial metallurgical
Speed is answered, useful element oxidational losses is prevented and improves yield of alloy.
Using a kind of ladle wire feeding auxiliary device of the invention and ladle wire feeding method obtain it is following the utility model has the advantages that
1. a kind of ladle wire feeding auxiliary device of the invention and ladle wire feeding method, due to there is no Slag Layer influence, silk thread
It is fed directly into molten steel, silk thread is avoided and just melts and cause silk thread to cannot be introduced into molten steel since steel slag is blocked up not entering molten steel
The phenomenon that, effectively increase the recovery rate of silk thread；
2. a kind of ladle wire feeding auxiliary device of the invention and ladle wire feeding method, the immersion hood of design, which has been blocked, feeds silk
When the molten steel splash that generates, and the gas and flue dust generated when feeding silk can be discharged into dust pelletizing system, reduced environmental pollution, prevented pair
The damage of personnel health；
3. a kind of ladle wire feeding auxiliary device of the invention and ladle wire feeding method, the vacuum evacuation device that design is equipped with exist
Certain vacuum state can be formed after unlatching in immersion hood, changes the metallurgical reaction condition of molten steel ladle, improves part smelting
Golden reaction speed prevents useful element oxidational losses and improves yield of alloy.
Detailed description of the invention
Fig. 1 is the concrete structure schematic diagram of a kind of ladle wire feeding auxiliary device and ladle wire feeding method.
In figure: 1- ladle, 2- workbench, 3- wire feeder, 3a- tinsel delivery line, 4- tinsel, 5- ventilation remove
Dirt device, 5a- vacuum evacuation device, 5b- vacuum evacuation device pipeline.6- dust removal by ventilation pipe, A- ladle wire feeding auxiliary device, A1- connect
Connect bracket, A2- immersion hood, A3- guiding tube.
Specific embodiment
With reference to the accompanying drawings and examples to a kind of ladle wire feeding auxiliary device of the invention and ladle wire feeding method do into
The description of one step.
As shown in Figure 1, a kind of ladle wire feeding auxiliary device should including ladle 1 and the wire feeder being placed on workbench 23
The tinsel delivery line 3a of wire feeder is connect with the ladle wire feeding auxiliary device A that a Liftable type is arranged, tinsel export
Tinsel 4 is transferred in the ladle wire feeding auxiliary device by pipe, which again directly infuses tinsel
Enter inside the molten steel in ladle 1.
A ventilating dust-arrester 5 is provided on workbench 2, which passes through a dust removal by ventilation pipe 6 and one
The inside of ladle wire feeding auxiliary device A connects, and the ventilating dust-arrester is communicated with ladle wire feeding auxiliary device pipeline.
Ladle wire feeding auxiliary device A includes connecting bracket A1, immersion hood A2 and guiding tube A3, wherein the connecting bracket with
Tinsel delivery line 3a is fixedly connected, be fixedly installed in the frame body of the connecting bracket vertical configuration by refractory material system
At immersion hood, the immersion hood be upper end closed, lower ending opening formula inverted U design, offered in the closed upper end of immersion hood
One through-hole, guiding tube are fixed in immersion hood by the perpendicular shape of the through-hole, and the guiding tube and tinsel export
Pipe pipeline communicates, that is, metal steel wire 4 is transferred in the guiding tube by wire feeder 3 from tinsel delivery line, then whole by falling
Inside the molten steel that a ladle wire feeding auxiliary device is submerged into it in ladle 1 (as shown in the arrow in Fig. 1).
Vacuum evacuation device 5a is provided in ventilating dust-arrester 5, the vacuum evacuation device by vacuum evacuation device pipeline 5b with
The immersion hood A2 of ladle wire feeding auxiliary device A is connected to.
It opens vacuum evacuation device to form certain vacuum state in the immersion hood of ladle wire feeding auxiliary device, changes steel
The metallurgical reaction condition of molten steel in wrapping improves partial metallurgical reaction speed, prevents useful element oxidational losses and improves alloy and receives
Yield.
Vacuum-pumping pipeline and dust removal by ventilation pipe are the pipeline of stretchable formula, make it can be as ladle wire feeding auxiliary device is same
Step lifting, keeps pipeline unimpeded.
A kind of ladle wire feeding method, based on a kind of above-mentioned ladle wire feeding auxiliary device, the specific steps of which are as follows:
1) when carrying out ladle wire feeding operation, the bottom Argon of ladle 1 is carried out first, and the argon gas of certain pressure and flow passes through
The air brick of ladle bottom is blown into molten steel, and under the driving of argon gas, the molten steel surface above argon blowing hole is formed without slag area；
2) the immersion hood A2 for being located at liftable ladle wire feeding auxiliary device A right above ladle 1 declines and is inserted into molten steel,
Make substantially to be isolated with atmospheric environment inside it, forms a more closed inert gas environment, the molten steel liquid in immersion hood
Face forms the extremely low pure region of steel slag content；
3) it carries out feeding silk operation, due to not having Slag Layer influence, tinsel passes through the tinsel delivery line of wire feeder 3
3a is transmitted into the guiding tube A3 of ladle wire feeding auxiliary device A, and due to the insertion in step 2) of immersion hood A2 at this time
In molten steel, that is, be equal to the inside that tinsel has been fed directly into molten steel, avoid silk thread do not enter molten steel just melt with
And due to steel slag blocked up the phenomenon that causing silk thread to cannot be introduced into molten steel, and immersion hood has blocked generation when tinsel enters molten steel
Molten steel splash；
4) start ventilating dust-arrester 5 simultaneously in step 3), the gas and flue dust that generate when feeding silk be discharged into dust pelletizing system,
It reduces environmental pollution, prevents the damage to personnel health.
Vacuum evacuation device 5a is opened in step 3), since the vacuum evacuation device is fed by vacuum evacuation device pipeline 5b and ladle
The immersion hood A2 connection of silk auxiliary device A, certain vacuum state can be formed in immersion hood by opening vacuum evacuation device, change steel
The metallurgical reaction condition of molten steel in wrapping improves partial metallurgical reaction speed, prevents useful element oxidational losses and improves alloy and receives
Yield.
Embodiment 1: pipe line steel is smelted in 300 tons of converter steel factories and feeds silicon-calcium wire.
Certain factory assists a kind of original simple wire feeder ladle wire feeding according to the invention in 300 tons of converter steel factory RH stations
Device and ladle wire feeding method are transformed, and X70 pipe line steel is smelted, which requires to carry out Calcium treatment, and former threads feeding apparatus is fed
Enter 500 meters of Ф 16mm core-spun yarns, wherein alloy powder containing Si-28%Ca, every meter of alloy amount closes 350g, and origin operation amounts to feeding and closes
Bronze end about 175kg, wherein 49 kilograms of calcic, calcium content fluctuation is averaged about in 15-45ppm in molten steel after operation terminates
21ppm, the recovery rate of calcium are 13%.
After transformation, ladle wire feeding auxiliary device A of the invention is added, the immersion hood A2's of the ladle wire feeding auxiliary device
Area coverage is 1000 × 1000mm of area.After ladle reaches hello silk station, ladle is blown with 180-250 liters/min of flow
Argon BOTTOM ARGON BLOWING forms molten steel surface without slag area.Immersion hood is declined insertion molten steel immediately after blowing the top of the slag open by range estimation, is made inside it
It is substantially isolated with atmosphere, forms a more closed inert gas environment, carry out feeding silk operation later.
More furnace statistics show the calcium content using similar core-spun yarn, in the case where average feed quantity is 417 meters, in steel
Fluctuation is fluctuated in 18-42ppm, and average calcium content 23ppm, the average recovery rate of calcium is 17%.The above results show the receipts of calcium
Yield significantly improves, and fluctuation range narrows.
Embodiment 2: magnesium line is fed in 300 tons of converter steel factory smelting low carbon aluminum killed steels.
It carries out feeding the processing of magnesium core-spun yarn for carbon aluminium-killed steel on same RH, is steel-tape armoring outside magnesium core-spun yarn,
Interior packet Ф 12.8Al-18%Mg alloy wire, wherein alloy is 322 grams every meter, converts into 58 grams of magnesium metal.Original process are practical to feed silk
Amount is 500 meters, residual magnesium amount 18ppm in steel, converts into recovery rate 19%.
After a kind of ladle wire feeding auxiliary device of the invention and ladle wire feeding method, 160 liters of steel ladle bottom argon blowing flow/
Minute, after feeding 500 meters of silk, residual magnesium amount 23ppm in steel is measured, converts into recovery rate 24%.
By above description and embodiment, a kind of ladle wire feeding auxiliary device of the invention and ladle wire feeding method, due to
There is no Slag Layer influence, silk thread is fed directly into molten steel, avoids silk thread and just melts and since steel slag is blocked up not entering molten steel
The phenomenon that causing silk thread to cannot be introduced into molten steel, effectively increases the recovery rate of silk thread；And a kind of ladle wire feeding auxiliary of the invention
Device and ladle wire feeding method, the immersion hood of design has blocked the molten steel splash generated when feeding silk, and can will generate when hello silk
Gas and flue dust be discharged into dust pelletizing system, reduce environmental pollution, prevent the damage to personnel health；In addition, one kind of the invention
Ladle wire feeding auxiliary device and ladle wire feeding method, the vacuum evacuation device that design is equipped with can be formed after unlatching in immersion hood
Certain vacuum state changes the metallurgical reaction condition of molten steel ladle, improves partial metallurgical reaction speed, prevents useful element
Oxidational losses and raising yield of alloy.
Claims (4)
1. a kind of ladle wire feeding auxiliary device, including ladle (1) and the wire feeder (3) being placed on workbench (2), feature exists
In:
The ladle wire feeding auxiliary device (A) of the tinsel delivery line (3a) of the wire feeder (3) and Liftable type setting
Tinsel (4) is transferred in the ladle wire feeding auxiliary device by connection, tinsel delivery line, the ladle wire feeding auxiliary device
Tinsel is directly injected into inside the inner molten steel of ladle (1) again；
It is provided with a ventilating dust-arrester (5) on the workbench (2), which passes through a dust removal by ventilation pipe
(6) it is connect with the inside of a ladle wire feeding auxiliary device (A), and the ventilating dust-arrester and ladle wire feeding auxiliary device pipeline phase
It is logical；
The ladle wire feeding auxiliary device (A) includes connecting bracket (A1), immersion hood (A2) and guiding tube (A3), wherein should
Connecting bracket is fixedly connected with tinsel delivery line (3a), and a vertical configuration is fixedly installed in the frame body of the connecting bracket
The immersion hood made of refractory material, the immersion hood are the inverted U design of upper end closed, lower ending opening formula, are closed in immersion hood
Upper end offer a through-hole, guiding tube is fixed in immersion hood by the perpendicular shape of the through-hole, and the guiding tube with
Tinsel delivery line pipeline communicates, that is, metal steel wire (4) is transferred to the guidance from tinsel delivery line by wire feeder (3)
In pipe, then by falling entire ladle wire feeding auxiliary device it is submerged into it inside inner molten steel of ladle (1).
2. a kind of ladle wire feeding auxiliary device as described in claim 1, which is characterized in that the ventilating dust-arrester (5)
It is inside provided with vacuum evacuation device (5a), which passes through vacuum evacuation device pipeline (5b) and ladle wire feeding auxiliary device
(A) immersion hood (A2) connection.
3. a kind of ladle wire feeding method, a kind of ladle wire feeding auxiliary device based on the claims 1, specific steps are such as
Under:
1) when carrying out ladle wire feeding operation, the bottom Argon of ladle (1) is carried out first, and the argon gas of certain pressure and flow passes through steel
The air brick of packet bottom is blown into molten steel, and under the driving of argon gas, the molten steel surface above argon blowing hole is formed without slag area；
2) immersion hood (A2) for being located at liftable ladle wire feeding auxiliary device (A) right above ladle (1) declines and is inserted into molten steel
In, make substantially to be isolated with atmospheric environment inside it, forms a more closed inert gas environment, the molten steel in immersion hood
Liquid level forms the extremely low pure region of steel slag content；
3) it carries out feeding silk operation, due to not having Slag Layer influence, tinsel passes through the tinsel delivery line of wire feeder (3)
(3a) is transmitted into the guiding tube (A3) of ladle wire feeding auxiliary device (A), and since immersion hood (A2) at this time is in step
2) in insertion molten steel, that is, it is equal to the inside that tinsel has been fed directly into molten steel, avoids silk thread and do not entering molten steel
With regard to fusing and due to steel slag blocked up the phenomenon that causing silk thread to cannot be introduced into molten steel, and immersion hood has blocked tinsel and has entered steel
The molten steel splash generated when water；
4) start ventilating dust-arrester (5) simultaneously in step 3), the gas and flue dust that generate when feeding silk are discharged into dust pelletizing system, subtracted
Few environmental pollution, prevents the damage to personnel health.
4. a kind of ladle wire feeding method as claimed in claim 3, which is characterized in that open vacuum means in the step 3)
(5a) is set, since the vacuum evacuation device passes through the immersion hood of vacuum evacuation device pipeline (5b) and ladle wire feeding auxiliary device (A)
(A2) it is connected to, certain vacuum state can be formed in immersion hood by opening vacuum evacuation device, and the metallurgy for changing molten steel ladle is anti-
Condition is answered, partial metallurgical reaction speed is improved, prevent useful element oxidational losses and improves yield of alloy.
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| CN201610377551.9A CN107447075B (en) | 2016-05-31 | 2016-05-31 | A kind of ladle wire feeding auxiliary device and ladle wire feeding method |
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| CN201610377551.9A CN107447075B (en) | 2016-05-31 | 2016-05-31 | A kind of ladle wire feeding auxiliary device and ladle wire feeding method |
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| CN107447075B true CN107447075B (en) | 2019-07-23 |
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| CN110184415B (en) * | 2019-05-29 | 2020-08-14 | 钢铁研究总院 | Wire feeding device and method for ladle refining |
| CN110273048A (en) * | 2019-06-11 | 2019-09-24 | 首钢京唐钢铁联合有限责任公司 | A kind of VD furnace online processing position threads feeding apparatus and method |
| CN110842163A (en) * | 2019-09-30 | 2020-02-28 | 鞍钢股份有限公司 | Wire feeding method and device for reducing oxygen content of rare earth wire |
| CN112375875A (en) * | 2020-10-26 | 2021-02-19 | 宝钢工程技术集团有限公司 | Vacuum refining device for molten steel |
| CN114350895B (en) * | 2022-01-17 | 2023-02-07 | 江苏永钢集团有限公司 | Molten steel refining wire feeding device |
| CN115161433B (en) * | 2022-07-22 | 2023-12-15 | 北京科技大学 | Ladle wire feeding device with double-layer air curtain protection |
| CN115161431B (en) * | 2022-07-22 | 2023-12-15 | 北京科技大学 | Ladle wire feeding process with double-layer air curtain protection |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| DE2634282C2 (en) * | 1976-07-28 | 1978-04-13 | Mannesmann Ag, 4000 Duesseldorf | Process for the continuous introduction of additives into a vessel filled with liquid metal |
| KR101175614B1 (en) * | 2010-05-31 | 2012-08-21 | 현대제철 주식회사 | Laddle cover assembly for supplying alloy wire and alloy wire supplying system having the same |
| CN202643741U (en) * | 2012-07-05 | 2013-01-02 | 中冶赛迪工程技术股份有限公司 | Thread feeding device for vacuum refining device |
| CN203890384U (en) * | 2014-05-06 | 2014-10-22 | 宝钢工程技术集团有限公司 | Top-blown argon lance device with wire feeding and guiding function |
| CN105274283A (en) * | 2015-11-30 | 2016-01-27 | 天津天一阀门有限公司 | Dust hood of ladle wire feeder |
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