CN108754074B - The device and method being mingled with is removed in a kind of blowing coupling of mechanical stirring - Google Patents
The device and method being mingled with is removed in a kind of blowing coupling of mechanical stirring Download PDFInfo
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- CN108754074B CN108754074B CN201811038441.5A CN201811038441A CN108754074B CN 108754074 B CN108754074 B CN 108754074B CN 201811038441 A CN201811038441 A CN 201811038441A CN 108754074 B CN108754074 B CN 108754074B
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- agitating paddle
- mechanical stirring
- mingled
- molten steel
- gas
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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
- C21C7/04—Removing impurities by adding a treating agent
- C21C7/072—Treatment with gases
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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
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Treatment Of Steel In Its Molten State (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
The present invention relates to the device and methods that a kind of blowing coupling of mechanical stirring goes to be mingled with comprising: mechanical stirring is blown coupling mechanism, agitating paddle and air supply system；Mechanical stirring blowing coupling mechanism is connect with agitating paddle, and agitating paddle is driven to rotate；Agitating paddle ontology is extended outside by pivot center；The agitating paddle includes gas outlet, and gas outlet is radially distributed；Mechanical stirring blowing coupling mechanism and agitating paddle include the air duct of perforation, and one end that air duct is located at agitating paddle is connected to gas outlet, and the other end is connected to air supply system.The device being mingled with is removed in mechanical stirring blowing coupling provided by the invention, bubble distribution is uniform in ladle molten bath, refines, bubble is good to the field trash adhesion effect in melt, slag gold contact area can also be increased, promote the reaction at slag gold interface, the desulfurization for being conducive to molten steel, being conducive to field trash can smoothly enter into slag, prevent the formation and reduction slag phenomenon of slag blister.Refining can be improved to go to be mingled with efficiency, improve steel quality.
Description
Technical field
The present invention relates to steel refining field, the device and method being mingled with is removed in especially a kind of mechanical stirring blowing coupling.
Background technique
There are mainly two types of the techniques of ladle refining removal of inclusions: steel ladle bottom argon blowing and ladle electromagnetic agitation.Ladle refining
Most common is exactly steel ladle bottom argon blowing, is that the argon gas of high pressure generates a large amount of tiny bubbles by the slit of air brick of steel ladle, increases
The contact area of bubble and molten steel, bubble float together after adhering to steel inclusion, finally enter big cinder inclusion, reach removal folder
Miscellaneous purpose.A large amount of bubble floatings circulate molten steel generation, increase the collision probability of bubble and field trash, improve folder
The removal rate of sundries.
Currently, steel ladle bottom argon blowing is using the different ladle bottom blowing air brick arrangements of selection, air brick type, Argon
The removal rate of flow raising field trash.However, this method, when ladle bottom is blown argon gas, bubble cannot be in ladle molten bath
Even distribution, while will cause liquid level rolling, slag blister is formed at cinder inclusion, Yi Fasheng slag pollutes molten steel.
Summary of the invention
(1) technical problems to be solved
In order to solve the above problem of the prior art, the present invention provides a kind of mechanical stirring blowing coupling and removes the device being mingled with
And method.
(2) technical solution
In order to achieve the above object, the present invention provides a kind of blowing coupling of mechanical stirring and removes the device and method being mingled with,
It include: mechanical stirring blowing coupling mechanism, agitating paddle and air supply system；The mechanical stirring blowing coupling mechanism and agitating paddle connect
It connects, and drives pivot axis of the agitating paddle along agitating paddle；The agitating paddle ontology is extended outside by pivot center；It is described
Agitating paddle includes gas outlet, and the gas outlet is radially distributed；The mechanical stirring blowing coupling mechanism includes passing through with agitating paddle
Logical air duct, one end that air duct is located at agitating paddle are connected to the gas outlet, and the other end and the air supply system connect
It is logical.
Preferably, the pivot center of the agitating paddle is vertical direction, and distance of the agitating paddle away from ladle bottom be not high
In the 40% of molten steel depth, the maximum radius of the agitating paddle is not less than the 50% of ladle cross sectional radius.
Preferably, the gas outlet is made of air brick, and the outlet of the gas outlet is located at the upper surface of agitating paddle.
Preferably, the air supply system is connected to by air receiver with air duct；The air receiver is also connected with pumping system
System, the air duct are provided with flowmeter.
Preferably, the agitating paddle includes 4 uniformly distributed blades.
Preferably, there are several equidistant concentric circles centered on agitating paddle pivot center, if including doing on each circle
Port.
It further, further include thermometric sampler.
The present invention also provides the methods that a kind of blowing coupling of mechanical stirring goes to be mingled with comprising following steps: S1, according to steel
Kind refining requires, and molten steel is contained in ladle；
S2 goes mechanical stirring described in claim 1 blowing coupling in the agitating paddle insertion molten steel for the device being mingled with；
S3 rotates agitating paddle, is stirred to molten steel；
S4, starts air supply system, and gas sprays into molten steel by gas outlet.
Preferably, the gas is argon gas, 0.144~0.420m of Gas injection flow3/ h, duration of ventilation be 8~
16min；The revolving speed of the agitating paddle is 50~200rpm.
Preferably, further include S5, close agitating paddle, close air supply system, control molten steel temperature steel grade liquidus curve it
Upper 20~50 DEG C, obtain the casting molten steel suitable for casting.
(3) beneficial effect
The present invention provides a kind of blowing coupling of mechanical stirring and removes the device being mingled with, in ladle molten bath bubble distribution uniformly, it is thin
Change, bubble is good to the field trash adhesion effect in melt, moreover it is possible to increase slag gold contact area, promote the reaction at slag gold interface, have
Conducive to the desulfurization of molten steel, being conducive to field trash be can smoothly enter into slag, prevent the formation and reduction slag phenomenon of slag blister.It can be improved
Refining goes to be mingled with efficiency, improves steel quality.
The present invention provides a kind of blowing coupling of mechanical stirring and goes the method being mingled with, and goes the molten steel matter for being mingled with high-efficient manufacture
It measures.
Detailed description of the invention
Fig. 1 is the structural schematic diagram that the device being mingled with is removed in a kind of blowing coupling of mechanical stirring.
[description of symbols]
1: air supply system；2: storing headroom；3: flowmeter；4: extract system；5: mechanical stirring is blown coupling mechanism；6: going out
Port；7: ladle；8: air duct；9: agitating paddle；10: bubble；11: air receiver；12: thermometric sampler.
Specific embodiment
In order to preferably explain the present invention, in order to understand, with reference to the accompanying drawing, by specific embodiment, to this hair
It is bright to be described in detail.
Embodiment 1
As shown in Figure 1, the lower end of mechanical stirring blowing coupling mechanism 5 is connect with agitating paddle 9；Mechanical stirring is blown coupling machine
The upper end of structure 5 is fixedly connected with air receiver 11, can be the fixation for being welded and fixed, being also possible to the disassemblies such as ring flange.
Storage headroom 2 in air receiver 11 is connected to air supply system 1, is also blown coupling mechanism 5 and stirring with mechanical stirring
Air duct 8 inside paddle 9 is connected to, and air receiver 11 is also connected to extract system 4.Air receiver 11 is for buffering air supply system 1
Gas supply fluctuation, stable controlled gas is provided into air duct 8.Stream is arranged close to the position of air receiver 11 in air duct 8
Meter, for measuring, showing gas flow.
The outside of mechanical stirring blowing coupling mechanism 5 is provided with refractory material layer, for protecting mechanical stirring blowing coupling
The ontology of mechanism 5.Mechanical stirring is blown coupling mechanism 5 and agitating paddle 9 is driven to rotate, and preferred rotation axis is vertical direction.
9 ontology of agitating paddle is extended outside by pivot center, can be oblique leaf paddle, or other kinds of paddle shape.
Distance of the agitating paddle 9 away from 7 bottom of ladle is not higher than the 40% of molten steel depth, and the maximum radius of agitating paddle 9 is transversal not less than ladle 7
The 50% of radius surface.
Multiple gas outlets 6 it have been disposed radially on agitating paddle 9, gas outlet 6, which is arranged in the pivot center of agitating paddle 9, is
On a series of concentric cylinders of axis, further on a series of concentric circles.Concentric circles is not the structure of necessary being, only
In order to show the position of gas outlet 6.The outlet of gas outlet 6 can towards below side or agitating paddle 9, what bubble 10 was beaten
More carefully more evenly.The outlet of certain gas outlet 6 can also be upward.Air brick composition can be used in gas outlet 6.
It may include multiple blades, multiple blades can be generally aligned in the same plane, and can also be located at difference certain altitude not
Coplanar or blade is obliquely installed, and can be stirred so more evenly, bubble 10 is beaten more broken.It include being located on multiple blades
Gas outlet 6 on same concentric circles.The connectivity structure of arcuation can also be provided between blade.Total outlet on agitating paddle 9
6 quantity of mouth can refer to depending on the cross-sectional area of ladle 7.
Thermometric sampler 12 is also set up, for measuring the temperature of molten steel or the content of sample detection field trash.
Using mechanical stirring provided in this embodiment blowing coupling go the device being mingled with go be mingled with step,
S1 refines according to steel grade and requires, contains molten steel in ladle 7；
Mechanical stirring blowing coupling is gone the agitating paddle 9 for the device being mingled with to be embedded in molten steel by S2；
S3 rotates agitating paddle 9, and the revolving speed of agitating paddle 9 is 50~200rpm, is stirred to molten steel；
S4 starts air supply system 1, and gas sprays into molten steel by gas outlet 6, and gas is argon gas, Gas injection flow 0.144
~0.420m3/ h, duration of ventilation are 8~16min；
S5 closes agitating paddle 9, closes air supply system 1, controls molten steel temperature 20~50 DEG C on the liquidus curve of steel grade,
Obtain the casting molten steel suitable for casting.
Embodiment 2
S1 refines according to steel grade and requires, contains molten steel in ladle 7；
Mechanical stirring blowing coupling is gone the agitating paddle 9 for the device being mingled with to be embedded in molten steel by S2, and insert depth is ladle 7
The 3/4 of pool depth, the length of agitating paddle 9 are 0.9 times of 7 bottom radius of ladle；
S3 rotates agitating paddle 9, and the revolving speed of agitating paddle 9 is 200rpm, is stirred to molten steel；
S4 starts air supply system 1, and gas sprays into molten steel by gas outlet 6, and gas is argon gas, Gas injection flow
0.144m3/ h, duration of ventilation 15min.
Embodiment 3
S1 refines according to steel grade and requires, contains molten steel in ladle 7；
Mechanical stirring blowing coupling is gone the agitating paddle 9 for the device being mingled with to be embedded in molten steel by S2, and insert depth is ladle 7
The 2/3 of pool depth, the length of agitating paddle 9 are 0.7 times of 7 bottom radius of ladle；
S3 rotates agitating paddle 9, and the revolving speed of agitating paddle 9 is 100rpm, is stirred to molten steel；
S4 starts air supply system 1, and gas sprays into molten steel by gas outlet 6, and gas is argon gas, Gas injection flow
0.2m3/ h, duration of ventilation 15min.
Embodiment 4
S1 refines according to steel grade and requires, contains molten steel in ladle 7；
Mechanical stirring blowing coupling is gone the agitating paddle 9 for the device being mingled with to be embedded in molten steel by S2, and insert depth is ladle 7
The 3/4 of pool depth, the length of agitating paddle 9 are 0.8 times of 7 bottom radius of ladle；
S3 rotates agitating paddle 9, and the revolving speed of agitating paddle 9 is 100rpm, is stirred to molten steel；
S4 starts air supply system 1, and gas sprays into molten steel by gas outlet 6, and gas is argon gas, Gas injection flow
0.420m3/ h, duration of ventilation 15min.
Embodiment 5
S1 refines according to steel grade and requires, contains molten steel in ladle 7；
Mechanical stirring blowing coupling is gone the agitating paddle 9 for the device being mingled with to be embedded in molten steel by S2, and insert depth is ladle 7
The 3/4 of pool depth, the length of agitating paddle 9 are 0.9 times of 7 bottom radius of ladle；
S3 rotates agitating paddle 9, and the revolving speed of agitating paddle 9 is 200rpm, is stirred to molten steel；
S4 starts air supply system 1, and gas sprays into molten steel by gas outlet 6, and gas is argon gas, Gas injection flow
0.420m3/ h, duration of ventilation 10min.
Embodiment 5
S1 refines according to steel grade and requires, contains molten steel in ladle 7；
Mechanical stirring blowing coupling is gone the agitating paddle 9 for the device being mingled with to be embedded in molten steel by S2, and insert depth is ladle 7
The 3/4 of pool depth, the length of agitating paddle 9 are 0.9 times of 7 bottom radius of ladle；
S3 rotates agitating paddle 9, and the revolving speed of agitating paddle 9 is 200rpm, is stirred to molten steel；
S4 starts air supply system 1, and gas sprays into molten steel by gas outlet 6, and gas is argon gas, Gas injection flow
0.420m3/ h, duration of ventilation 10min.
Embodiment 6
S1 refines according to steel grade and requires, contains molten steel in ladle 7；
Mechanical stirring blowing coupling is gone the agitating paddle 9 for the device being mingled with to be embedded in molten steel by S2, and insert depth is ladle 7
The 4/5 of pool depth, the length of agitating paddle 9 is 0.9 times of 7 bottom radius of ladle, including 4 uniformly distributed blades, every blade
3 gas outlets 6 are set；
S3 rotates agitating paddle 9, and the revolving speed of agitating paddle 9 is 150rpm, is stirred to molten steel；
S4 starts air supply system 1, and gas sprays into molten steel by gas outlet 6, and gas is argon gas, Gas injection flow
0.420m3/ h, duration of ventilation 8min.
S5 closes agitating paddle 9, closes air supply system 1, controls molten steel temperature 50 DEG C on the liquidus curve of steel grade, obtains
Casting molten steel suitable for casting.
Upper embodiment is only presently preferred embodiments of the present invention, for those of ordinary skill in the art, according to the present invention
Thought, there will be changes in the specific implementation manner and application range, and this specification should not be construed as to limit of the invention
System.
Claims (10)
1. the device being mingled with is removed in a kind of mechanical stirring blowing coupling, which is characterized in that be placed in ladle to the molten steel in ladle
It goes to be mingled with comprising: mechanical stirring is blown coupling mechanism, agitating paddle and air supply system；
The mechanical stirring blowing coupling mechanism is connect with agitating paddle, and drives pivot axis of the agitating paddle along agitating paddle；
The agitating paddle ontology is extended outside by pivot center；The agitating paddle includes gas outlet, and the gas outlet is radially distributed；
The mechanical stirring blowing coupling mechanism and agitating paddle include the air duct of perforation, and air duct is located at the one of agitating paddle
End is connected to the gas outlet, and the other end is connected to the air supply system.
2. the device being mingled with is removed in mechanical stirring blowing coupling as described in claim 1, it is characterised in that: the agitating paddle turns
Shaft line is vertical direction, and distance of the agitating paddle away from ladle bottom is not higher than the 40% of molten steel depth, the agitating paddle
Maximum radius is not less than the 50% of ladle cross sectional radius.
3. the device being mingled with is removed in mechanical stirring blowing coupling as described in claim 1, it is characterised in that: the gas outlet is by saturating
Gas brick is constituted, and the outlet of the gas outlet is located at the upper surface of agitating paddle.
4. the device being mingled with is removed in mechanical stirring blowing coupling as described in claim 1, it is characterised in that: the air supply system is logical
Air receiver is crossed to be connected to air duct；
The air receiver is also connected with extract system, and the air duct is provided with flowmeter.
5. the device being mingled with is removed in mechanical stirring as described in claim 1 blowing coupling, it is characterised in that: the agitating paddle includes
4 uniformly distributed blades.
6. the device being mingled with is removed in mechanical stirring blowing coupling as described in claim 1, it is characterised in that: exist and turned with agitating paddle
Several equidistant concentric circles centered on shaft line include several gas outlets on each circle.
7. the device being mingled with is removed in the mechanical stirring blowing coupling as described in claim 1 to 6 is any, it is characterised in that: further include
Thermometric sampler.
8. the method being mingled with is gone in a kind of mechanical stirring blowing coupling, which is characterized in that it includes the following steps: S1, according to steel grade
Refining requires, and molten steel is contained in ladle；
S2 goes mechanical stirring described in claim 1 blowing coupling in the agitating paddle insertion molten steel for the device being mingled with；
S3 rotates agitating paddle, is stirred to molten steel；
S4, starts air supply system, and gas sprays into molten steel by gas outlet.
9. the method being mingled with is gone in mechanical stirring blowing coupling as claimed in claim 8, it is characterised in that: the gas is argon
Gas, 0.144~0.420m of Gas injection flow3/ h, duration of ventilation are 8~16min；
The revolving speed of the agitating paddle is 50~200rpm.
10. the method being mingled with is gone in mechanical stirring blowing coupling as claimed in claim 8, it is characterised in that: further include S5, close
Agitating paddle closes air supply system, controls molten steel temperature 20~50 DEG C on the liquidus curve of steel grade, obtains the casting suitable for casting
Molten steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811038441.5A CN108754074B (en) | 2018-09-06 | 2018-09-06 | The device and method being mingled with is removed in a kind of blowing coupling of mechanical stirring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811038441.5A CN108754074B (en) | 2018-09-06 | 2018-09-06 | The device and method being mingled with is removed in a kind of blowing coupling of mechanical stirring |
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| Publication Number | Publication Date |
|---|---|
| CN108754074A CN108754074A (en) | 2018-11-06 |
| CN108754074B true CN108754074B (en) | 2019-06-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811038441.5A Active CN108754074B (en) | 2018-09-06 | 2018-09-06 | The device and method being mingled with is removed in a kind of blowing coupling of mechanical stirring |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110273049A (en) * | 2019-06-21 | 2019-09-24 | 敬业钢铁有限公司 | A kind of argon blowing of refining furnace system |
| CN111172354B (en) * | 2020-02-28 | 2021-11-12 | 鞍钢股份有限公司 | Microbubble molten steel purification device and purification method |
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| CN102154533A (en) * | 2011-05-09 | 2011-08-17 | 武汉钢铁(集团)公司 | Jet stirrer for mechanical stirring and desulfurizing of molten iron |
| CN103014218A (en) * | 2012-12-30 | 2013-04-03 | 大冶特殊钢股份有限公司 | KR stirring paddle and manufacture method thereof |
| CN106702071A (en) * | 2016-12-27 | 2017-05-24 | 营口东邦冶金设备耐材有限公司 | KR powder spraying melt desulfuration mixer |
| CN107299192A (en) * | 2017-04-24 | 2017-10-27 | 鞍钢股份有限公司 | A kind of device for deoxidizing and method of deoxidation for refining rotary blowing |
| CN206956079U (en) * | 2017-07-07 | 2018-02-02 | 攀枝花市朵实机械制造有限公司 | A kind of more preferable LF stoves of degasifying effect |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01180764A (en) * | 1987-12-28 | 1989-07-18 | Nippon Steel Corp | Method for continuously casting high clean steel |
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2018
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102154533A (en) * | 2011-05-09 | 2011-08-17 | 武汉钢铁(集团)公司 | Jet stirrer for mechanical stirring and desulfurizing of molten iron |
| CN103014218A (en) * | 2012-12-30 | 2013-04-03 | 大冶特殊钢股份有限公司 | KR stirring paddle and manufacture method thereof |
| CN106702071A (en) * | 2016-12-27 | 2017-05-24 | 营口东邦冶金设备耐材有限公司 | KR powder spraying melt desulfuration mixer |
| CN107299192A (en) * | 2017-04-24 | 2017-10-27 | 鞍钢股份有限公司 | A kind of device for deoxidizing and method of deoxidation for refining rotary blowing |
| CN206956079U (en) * | 2017-07-07 | 2018-02-02 | 攀枝花市朵实机械制造有限公司 | A kind of more preferable LF stoves of degasifying effect |
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| CN108754074A (en) | 2018-11-06 |
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