CN107586914A - BOTTOM ARGON BLOWING LF stoves and its auxiliary argon-blowing device, auxiliary argon jetting method - Google Patents
BOTTOM ARGON BLOWING LF stoves and its auxiliary argon-blowing device, auxiliary argon jetting method Download PDFInfo
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- CN107586914A CN107586914A CN201710762010.2A CN201710762010A CN107586914A CN 107586914 A CN107586914 A CN 107586914A CN 201710762010 A CN201710762010 A CN 201710762010A CN 107586914 A CN107586914 A CN 107586914A
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- argon
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- stove
- blowing device
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- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 title claims abstract description 336
- 229910052786 argon Inorganic materials 0.000 title claims abstract description 168
- 238000007664 blowing Methods 0.000 title claims abstract description 122
- 238000000034 method Methods 0.000 title claims abstract description 13
- 239000007789 gas Substances 0.000 claims abstract description 45
- 241001076960 Argon Species 0.000 claims abstract description 20
- 235000013876 argon Nutrition 0.000 claims abstract description 20
- 230000007246 mechanism Effects 0.000 claims abstract description 16
- 239000011449 brick Substances 0.000 claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims 1
- 229910000831 Steel Inorganic materials 0.000 abstract description 22
- 239000010959 steel Substances 0.000 abstract description 22
- 238000004519 manufacturing process Methods 0.000 abstract description 14
- 230000015556 catabolic process Effects 0.000 abstract description 4
- 238000006731 degradation reaction Methods 0.000 abstract description 4
- 230000007812 deficiency Effects 0.000 abstract description 3
- 230000001276 controlling effect Effects 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 3
- 238000007670 refining Methods 0.000 description 3
- 230000009467 reduction Effects 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 241001062472 Stokellia anisodon Species 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000007872 degassing Methods 0.000 description 1
- 238000006477 desulfuration reaction Methods 0.000 description 1
- 230000023556 desulfurization Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 239000000686 essence Substances 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000033764 rhythmic process Effects 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- Carbon Steel Or Casting Steel Manufacturing (AREA)
Abstract
The present invention relates to a kind of auxiliary argon-blowing device based on LF furnace bottom Argons, the auxiliary argon-blowing device argon jetting method and be configured with the BOTTOM ARGON BLOWING LF stoves of the auxiliary argon-blowing device, the auxiliary argon-blowing device based on LF furnace bottom Argons includes being used for the argon blowing lance for blowing argon gas into stove, the argon blowing lance is connected with argon gas supply line and the drive mechanism for driving it to switch outside stove in standby position and stove between working position, and the argon gas supply line is provided with flow controlling unit.Auxiliary argon-blowing device provided by the invention, it can carry out auxiliary Argon in stove in time at LF furnace bottoms Argon deficiency or failure, ensure being smoothed out for production, avoid because excessively increasing influence of the BOTTOM ARGON BLOWING flow to ladle service life, and ladle-to-ladle operation can be avoided or handle molten steel degradation.
Description
Technical field
The present invention relates to it is a kind of based on LF furnace bottom Argons auxiliary argon-blowing device, the auxiliary argon-blowing device argon jetting method with
And it is configured with the BOTTOM ARGON BLOWING LF stoves of the auxiliary argon-blowing device.
Background technology
Current LF refining method majority both domestic and external be using steel ladle bottom argon blowing technology stirring molten steel, with reach uniform temperature and
The functions such as composition, removal of inclusions, desulfurization and degassing in ladle bottom, it is necessary to install air brick, to reach the mesh of bottom Argon
's.But air brick will bear the bump of high-temperature molten steel and the erosion of slag in use, while also suffer temperature
The thermal shock to cold and heat succeed each other of degree；Air brick surface often occurs to breathe freely bad, phenomena such as easily causing bottom blowing to fail.Now
Steel mill can typically take increase bottom blowing pressure or carry out ladle-to-ladle processing：
If increase bottom blowing pressure, it is necessary to repeatedly measure molten steel component and extend refining time, can not only destroy air brick,
Increase bleed-out risk, influence the service life of ladle, and substantial amounts of electric energy and alloy can be consumed；If molten steel component is not inconsistent still
Requirement is closed, it is necessary to carry out degradation processing to steel, causes larger cost allowance；
If carrying out ladle-to-ladle processing, can not only influence scene rhythm of production, and it is ladle-to-ladle during can also reduce molten steel
Temperature；Molten steel splash is had simultaneously, increase molten steel loss, is in turn resulted in production efficiency reduction, is increased production cost.
The content of the invention
The present embodiments relate to the Argon of a kind of auxiliary argon-blowing device based on LF furnace bottom Argons, the auxiliary argon-blowing device
Method and the BOTTOM ARGON BLOWING LF stoves for being configured with the auxiliary argon-blowing device, can at least solve the segmental defect of prior art.
The present embodiments relate to a kind of auxiliary argon-blowing device based on LF furnace bottom Argons, including for blowing argon into stove
The argon blowing lance of gas, the argon blowing lance are connected with argon gas supply line and for driving its standby position and working position in stove outside stove
Between the drive mechanism that switches, the argon gas supply line is provided with flow controlling unit.
As one of embodiment, the argon blowing lance has two, the argon gas supply line have two and with two Argons
Rifle corresponds configuration.
As one of embodiment, default auxiliary argon blowing rate scope q1~q4 is divided into q1~q2, q2~q3 and q3
Tri- flow rate zones of~q4, wherein, q1, q2, q3 and q4 increase successively, and q4 is q2 and q3 sums, two flow controlling units
Flow-control scope correspond to q1~q2 and q2~q3 respectively.
As one of embodiment, the drive mechanism, which has two sets and corresponded with two argon blowing lances, to be configured.
As one of embodiment, the drive mechanism includes being used for the lifting driving structure for driving the argon blowing lance lifting.
As one of embodiment, it is described lifting driving structure include trolley track framework, lift cart and with the liter
Drop dolly connects and driven the elevation driving unit that the lift cart is walked on the trolley track framework, the small track
Above the body of heater, the argon blowing lance is installed on the lift cart road frame arrangement.
As one of embodiment, the drive mechanism also includes being used to drive the trolley track framework to put around a swinging axle
Dynamic swing drive structure, the axial direction of the swinging axle for it is horizontal to.
As one of embodiment, the swing drive structure includes the wobble drive unit with a telescopic propeller shaft, institute
State the axially vertical of the axial direction of telescopic propeller shaft and the swinging axle.
The present embodiments relate to a kind of BOTTOM ARGON BLOWING LF stoves, including body of heater, the bottom of furnace body is provided with air brick, also matched somebody with somebody
The auxiliary argon-blowing device as described above based on LF furnace bottom Argons is equipped with, the argon blowing lance is arranged in above the body of heater.
The present embodiments relate to as described above based on LF furnace bottom Argons auxiliary argon-blowing device argon jetting method, according to
Required auxiliary Argon amount blows argon gas into stove using the corresponding argon blowing lance, specifically,
When required auxiliary Argon amount is in the range of q1~q2, only enable described corresponding to q1~q2 flow rate zones
Argon blowing lance blows argon gas into stove；
When required auxiliary Argon amount is in the range of q2~q3, only enable described corresponding to q2~q3 flow rate zones
Argon blowing lance blows argon gas into stove；
When required auxiliary Argon amount is in the range of q3~q4, while enables two argon blowing lances and argon is blowed into stove
Gas.
The embodiment of the present invention at least has the advantages that：The auxiliary argon-blowing device that the present embodiment provides, can be in LF
When furnace bottom Argon deficiency or failure, auxiliary Argon in stove is carried out in time, ensures being smoothed out for production, avoids because excessively increasing
Influence of the BOTTOM ARGON BLOWING flow to ladle service life, and ladle-to-ladle operation can be avoided or handle molten steel degradation.This implementation
Auxiliary argon-blowing device and method the operation implementation that example provides are simple and reliable, can effectively reduce production cost and provide production efficiency.
The embodiment of the present invention further has the advantages that：There is provided the low discharge argon blowing lance that can work independently and greatly
Flow argon blowing lance, so as to smelt the demand to Argon amount according to molten steel, the reasonable control to Argon amount is realized, is effectively improved
Molten steel component, improve steel quality and reduce production cost.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the required accompanying drawing used in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is the structural representation of BOTTOM ARGON BLOWING LF stoves provided in an embodiment of the present invention；
Fig. 2 is the structural representation of auxiliary argon-blowing device provided in an embodiment of the present invention；
Fig. 3 is the assembling structure schematic diagram of argon blowing lance provided in an embodiment of the present invention, lift cart and trolley track framework.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained all other under the premise of creative work is not made
Embodiment, belong to the scope of protection of the invention.
Embodiment one
Such as Fig. 1, the embodiment of the present invention provides a kind of auxiliary argon-blowing device based on LF furnace bottom Argons, including for into stove
Blow the argon blowing lance 2 of argon gas, the argon blowing lance 2 be connected with argon gas supply line 3 and for drive its outside stove standby position with
The drive mechanism switched in stove between working position, the argon gas supply line 3 are provided with flow controlling unit.
The auxiliary argon-blowing device that the present embodiment provides, stove can be carried out in time in LF furnace bottoms Argon deficiency or failure
Interior auxiliary Argon, ensure being smoothed out for production, avoid because excessively increasing influence of the BOTTOM ARGON BLOWING flow to ladle service life, and
And ladle-to-ladle operation can be avoided or handle molten steel degradation.
Further optimize above-mentioned auxiliary argon-blowing device, such as Fig. 1, the argon blowing lance 2 there are two, the argon gas supply line
3 have two and correspond configuration with two argon blowing lances 2, accordingly, above-mentioned stream are designed with two argon gas supply lines 3
Measure control unit.Wherein, two argon gas supply lines 3 can independently carry out Flow-rate adjustment, for needing accurate control Argon amount
Situation, can use the coarse adjustment argon blowing rate of a wherein argon gas supply line 3, the accurate adjustment argon blowing rate of another argon gas supply line 3
Mode, for example, it is desired to auxiliary Argon amount be 56m3During/h, it can be adjusted by a wherein argon gas supply line 3 to 50m3/
H, another argon gas supply line 3 are adjusted to 6m3/h；Or following preferred embodiment can also be used：
Default auxiliary argon blowing rate scope q1~q4 is divided into q1~q2, q2~q3 and tri- flow areas of q3~q4
Between, wherein, q1, q2, q3 and q4 increase successively, and q4 is q2 and q3 sums, the flow-control scope of two flow controlling units
Q1~q2 and q2~q3 are corresponded to respectively；It is i.e. corresponding to use low discharge argon blowing lance and big flow argon blowing lance, specifically,
When required auxiliary Argon amount is in the range of q1~q2, only enable described corresponding to q1~q2 flow rate zones
Argon blowing lance 2 (low discharge argon blowing lance) blows argon gas into stove；
When required auxiliary Argon amount is in the range of q2~q3, only enable described corresponding to q2~q3 flow rate zones
Argon blowing lance 2 (big flow argon blowing lance) blows argon gas into stove；
When required auxiliary Argon amount is in the range of q3~q4, while enables two argon blowing lances 2 and blowed into stove
Argon gas.
By the above-mentioned means, there is provided the low discharge argon blowing lance that can work independently and big flow argon blowing lance, so as to root
The demand to Argon amount is smelted according to molten steel, realizes the reasonable control to Argon amount, is effectively improved molten steel component, improves steel quality
With reduction production cost.
Above-mentioned flow controlling unit is that those skilled in the art are easily designed according to prior art, for example, can be
Flowmeter 4 and regulating valve 5 are set on argon gas supply line 3, by the argon flow amount in the signal piping of flowmeter 4, and with regulation
The interlocked control of valve 5, to control to adjust the aperture of valve 5, reach required argon flow amount, feelings are divided based on above-mentioned flow rate zone
Condition, the flow adjustment range that can be directed to two argon gas supply lines 3 configure the flowmeter 4 of corresponding range and the accordingly regulation of bore
Valve 5；Or using conventional flow controller, further stop valve can be set on argon gas supply line 3.In addition, two argon gas
Supply line 3 is connected by flexible pipe with corresponding argon blowing lance 2；Two argon gas supply lines 3 can pass through same argon gas supply main
It is connected with argon gas source, Argon master control valve 6 can be set on argon gas supply main.
Further optimize above-mentioned auxiliary argon-blowing device, above-mentioned two argon blowing lances 2 can be driven by same drive mechanism
It is dynamic, but corrode and save driving energy consumption etc. to reduce unnecessary molten steel and consider, such as Fig. 1, the drive mechanism have two sets and
Correspond and configure with two argon blowing lances 2, be i.e. two argon blowing lances 2 can be independently outside stove in standby position and stove between working position
Switching.
The structure for the above-mentioned drive mechanism that continues, the drive mechanism include being used for the lifting for driving the argon blowing lance 2 to lift
Driving structure, inserted by argon blowing lance 2 corresponding to lifting driving structure driving in stove or by being extracted in stove.Preferably, such as Fig. 2
And Fig. 3, show a kind of specific embodiment for lifting driving structure：
The lifting driving structure includes trolley track framework 8, lift cart 7 and is connected simultaneously with the lift cart 7
The elevation driving unit 9 for driving the lift cart 7 to walk on the trolley track framework 8, the cloth of trolley track framework 8
The top of body of heater 1 is placed in, the argon blowing lance 2 is installed on the lift cart 7；The axis and trolley track of the argon blowing lance 2
The track length direction of framework 8 is parallel, is slid by driving lift cart 7 on corresponding trolley track framework 8, you can drives
Argon blowing lance 2 lifts.Above-mentioned elevation driving unit 9 can use cylinder, hydraulic cylinder of the drive shaft axially with the diameter parallel of argon blowing lance 2
Or electric pushrod etc.；In another embodiment, the elevation driving unit 9 include reducing motor, drive sprocket, jockey sprocket and
Driving chain, a chain drive structure is formed, by the way that lift cart 7 is connected with driving chain, is driven and be driven by drive sprocket
Chain so drive lift cart 7 slide, specifically arrangement is that those skilled in the art are easily achieved according to routine techniques
, here is omitted.
It is further preferred that the drive mechanism also includes being used to drive the trolley track framework 8 to put around a swinging axle
Dynamic swing drive structure, the axial direction of the swinging axle is to be horizontal to passing through swing drive structure and above-mentioned lifting driving structure
Coordinate, facilitate the arrangement of trolley track framework 8, avoid trolley track framework 8 from being vertically disposed to the top of body of heater 1 and take excessively
Other operations in the top headroom of body of heater 1 and then influence production.As preferred embodiment, such as Fig. 2, the swinging axle
It is arranged on a hinged block 12 and is connected with the trolley track framework 8, the swing drive structure includes having a flexible drive
The wobble drive unit 10 of moving axis, the axial direction of the telescopic propeller shaft are axially vertical with the swinging axle；Wherein, the swing is driven
Moving cell 10 is preferably the side for the close body of heater 1 for being arranged in hinged block 12, can hinge arrangement in a mounting seat 11 and hinge
Axial direction and above-mentioned swinging axle it is axially in parallel；The wobble drive unit 10 can use cylinder, hydraulic cylinder, electric pushrod etc. often
The retractable driving device of rule.In addition, above-mentioned elevation driving unit 9 and wobble drive unit 10 can be with central controller electricity
Property connection, by the work of the central controller controls drive mechanism, the central controller preferably uses LF refining nearby
The central control system of process, without setting in addition, and it is conventional Automated condtrol mode, without programming in addition.
For above-mentioned drive mechanism, concrete operations mode is：Drive argon blowing lance 2 (small by above-mentioned swing drive structure
Car track-frame 8) be rocked to cause argon blowing lance 2 axis reach predetermined angle (angle between vertical direction in other words with
Angle between the axis of body of heater 1), restart above-mentioned lifting driving structure, argon blowing lance 2 is moved downwardly to working position in stove, from
And Argon stirring is continuously carried out into molten steel.After Argon terminates (molten steel is chemically examined qualified rear after testing), start above-mentioned liter
Driving structure is dropped, argon blowing lance 2 is moved up to outside stove, then (the trolley track of argon blowing lance 2 is driven by above-mentioned swing drive structure
Framework 8) it is rocked to standby position.
Embodiment two
Such as Fig. 1, the present embodiments relate to a kind of BOTTOM ARGON BLOWING LF stoves, including body of heater 1, the bottom of body of heater 1 is provided with
Gas brick, it is also configured with aiding in argon-blowing device, the auxiliary argon-blowing device is preferably to use above-described embodiment one to be provided based on LF
The auxiliary argon-blowing device of furnace bottom Argon, here is omitted for its concrete structure.
Embodiment three
The embodiment of the present invention provides blowing for the auxiliary argon-blowing device based on LF furnace bottom Argons that above-described embodiment one is provided
Argon method, this method include：Argon gas is blowed into stove using the corresponding argon blowing lance 2 according to required auxiliary Argon amount, had
Body,
When required auxiliary Argon amount is in the range of q1~q2, only enable described corresponding to q1~q2 flow rate zones
Argon blowing lance 2 blows argon gas into stove；
When required auxiliary Argon amount is in the range of q2~q3, only enable described corresponding to q2~q3 flow rate zones
Argon blowing lance 2 blows argon gas into stove；
When required auxiliary Argon amount is in the range of q3~q4, while enables two argon blowing lances 2 and blowed into stove
Argon gas.
Wherein, each auxiliary argon blowing rate section of above-mentioned default auxiliary argon blowing rate scope and segmentation is this area
Technical staff can voluntarily be set according to the operating mode of actual production, such as can determine different productions according to empirical data is smelted
Total Argon amount needed for stage or different production status, then subtract current BOTTOM ARGON BLOWING amount, you can or required auxiliary Argon
Amount.
In the present embodiment, above-mentioned q1, q2, q3 and q4 are respectively 10m3/h、60m3/h、100m3/ h and 160m3/h
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
God any modification, equivalent substitution and improvements made etc., should be included in the scope of the protection with principle.
Claims (10)
- A kind of 1. auxiliary argon-blowing device based on LF furnace bottom Argons, it is characterised in that：Including for blowing blowing for argon gas into stove Argon rifle, the argon blowing lance are connected with argon gas supply line and for driving it to be cut outside stove in standby position and stove between working position The drive mechanism changed, the argon gas supply line are provided with flow controlling unit.
- 2. the auxiliary argon-blowing device as claimed in claim 1 based on LF furnace bottom Argons, it is characterised in that：The argon blowing lance has two Bar, the argon gas supply line, which has two and corresponded with two argon blowing lances, to be configured.
- 3. the auxiliary argon-blowing device as claimed in claim 2 based on LF furnace bottom Argons, it is characterised in that：Default auxiliary is blown Argon range of flow q1~q4 is divided into q1~q2, q2~q3 and tri- flow rate zones of q3~q4, wherein, q1, q2, q3 and q4 are successively Increase, q4 are q2 and q3 sums, and the flow-control scope of two flow controlling units corresponds to q1~q2 and q2~q3 respectively.
- 4. the auxiliary argon-blowing device as claimed in claim 2 based on LF furnace bottom Argons, it is characterised in that：The drive mechanism has Two sets and correspond and configure with two argon blowing lances.
- 5. the auxiliary argon-blowing device based on LF furnace bottom Argons as described in claim 1 or 4, it is characterised in that：The driving machine Structure includes being used for the lifting driving structure for driving the argon blowing lance lifting.
- 6. the auxiliary argon-blowing device as claimed in claim 5 based on LF furnace bottom Argons, it is characterised in that：The lifting driving knot Structure includes trolley track framework, lift cart and be connected and driven described in the lift cart walks in the lift cart Elevation driving unit on trolley track framework, the trolley track framework are arranged in above the body of heater, the argon blowing lance peace Loaded on the lift cart.
- 7. the auxiliary argon-blowing device as claimed in claim 6 based on LF furnace bottom Argons, it is characterised in that：The drive mechanism is also Including the swing drive structure for driving the trolley track framework to be swung around a swinging axle, the axial direction of the swinging axle is water Put down to.
- 8. the auxiliary argon-blowing device as claimed in claim 7 based on LF furnace bottom Argons, it is characterised in that：The wobble drive knot Structure includes the wobble drive unit with a telescopic propeller shaft, and the axial direction of the telescopic propeller shaft and the axial direction of the swinging axle are hung down Directly.
- 9. a kind of BOTTOM ARGON BLOWING LF stoves, including body of heater, the bottom of furnace body are provided with air brick, it is characterised in that：Be also configured with as The auxiliary argon-blowing device based on LF furnace bottom Argons any one of claim 1 to 8, the argon blowing lance are arranged in the stove Above body.
- 10. the argon jetting method of the auxiliary argon-blowing device based on LF furnace bottom Argons as claimed in claim 3, it is characterised in that：Root Argon gas is blowed into stove using the corresponding argon blowing lance according to required auxiliary Argon amount, specifically,When required auxiliary Argon amount is in the range of q1~q2, the Argon corresponding to q1~q2 flow rate zones is only enabled Rifle blows argon gas into stove；When required auxiliary Argon amount is in the range of q2~q3, the Argon corresponding to q2~q3 flow rate zones is only enabled Rifle blows argon gas into stove；When required auxiliary Argon amount is in the range of q3~q4, while enables two argon blowing lances and argon gas is blowed into stove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710762010.2A CN107586914A (en) | 2017-08-30 | 2017-08-30 | BOTTOM ARGON BLOWING LF stoves and its auxiliary argon-blowing device, auxiliary argon jetting method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710762010.2A CN107586914A (en) | 2017-08-30 | 2017-08-30 | BOTTOM ARGON BLOWING LF stoves and its auxiliary argon-blowing device, auxiliary argon jetting method |
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| CN107586914A true CN107586914A (en) | 2018-01-16 |
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| CN201710762010.2A Pending CN107586914A (en) | 2017-08-30 | 2017-08-30 | BOTTOM ARGON BLOWING LF stoves and its auxiliary argon-blowing device, auxiliary argon jetting method |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH059552A (en) * | 1991-07-09 | 1993-01-19 | Nippon Steel Corp | Top blowing lance type ladle refining apparatus |
| CN2839298Y (en) * | 2005-08-26 | 2006-11-22 | 西安重型机械研究所 | Automatic regulator for steel ladle bottom argon-blowing system |
| CN2861176Y (en) * | 2006-01-06 | 2007-01-24 | 鞍钢集团新钢铁有限责任公司 | Processing apparatus for on-line accident of finery |
| CN101418366A (en) * | 2007-10-25 | 2009-04-29 | 宝山钢铁股份有限公司 | Top and bottom combined blown dehydrogenation method of refined-smelting ladle furnace |
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-
2017
- 2017-08-30 CN CN201710762010.2A patent/CN107586914A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH059552A (en) * | 1991-07-09 | 1993-01-19 | Nippon Steel Corp | Top blowing lance type ladle refining apparatus |
| CN2839298Y (en) * | 2005-08-26 | 2006-11-22 | 西安重型机械研究所 | Automatic regulator for steel ladle bottom argon-blowing system |
| CN2861176Y (en) * | 2006-01-06 | 2007-01-24 | 鞍钢集团新钢铁有限责任公司 | Processing apparatus for on-line accident of finery |
| CN101418366A (en) * | 2007-10-25 | 2009-04-29 | 宝山钢铁股份有限公司 | Top and bottom combined blown dehydrogenation method of refined-smelting ladle furnace |
| CN102002554A (en) * | 2009-08-28 | 2011-04-06 | 宝山钢铁股份有限公司 | Rapid desulfurization refining method for ladle furnace |
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| Title |
|---|
| 中国冶金建设协会: "《钢铁企业过程检测和控制自动化手册》", 31 July 2000, 冶金工业出版社 * |
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Application publication date: 20180116 |