CN107739778B - A kind of steel ladle bottom argon blowing device and its refining stirring means - Google Patents
A kind of steel ladle bottom argon blowing device and its refining stirring means Download PDFInfo
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- CN107739778B CN107739778B CN201711204523.8A CN201711204523A CN107739778B CN 107739778 B CN107739778 B CN 107739778B CN 201711204523 A CN201711204523 A CN 201711204523A CN 107739778 B CN107739778 B CN 107739778B
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- compression ring
- venthole
- goes out
- argon
- branch pipe
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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
-
- 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
- C21C7/0075—Treating in a ladle furnace, e.g. up-/reheating of molten steel within the ladle
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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)
Abstract
The invention discloses a kind of steel ladle bottom argon blowing devices, including the ladle layer of resistance to material, the ladle layer of resistance to material bottom is equipped with air brick, ventilative layer of sand is provided with above air brick, argon delivery lines are connected with below air brick, go out compression ring by being disposed with first except interior inside the air brick, second, which goes out compression ring and third, goes out compression ring, first, which goes out compression ring, is connect by the first branch pipe with argon delivery lines, second, which goes out compression ring, is connect by the second branch pipe with argon delivery lines, third goes out compression ring and is connect by third branch pipe with argon delivery lines, first branch pipe, throttle valve is respectively arranged on second branch pipe and third branch pipe；First goes out on compression ring to be evenly arranged with several the first ventholes, and second goes out on compression ring to be evenly arranged with several the second ventholes, and third goes out on compression ring to be evenly arranged with several third ventholes.The present invention can improve the deficiencies in the prior art, realize argon gas good refining mixing effect in ladle.
Description
Technical field
The present invention relates to refinement outside-furnace technical field, especially a kind of steel ladle bottom argon blowing device and its refining stirring side
Method.
Background technique
In recent years, with the continuous improvement that society requires steel, especially heavy-duty machinery manufacturing industry, special steel industry, packet
There are the Platform Steels, pressure such as the electric energy such as water power, thermoelectricity, wind-powered electricity generation and nuclear power steel, mine, harbour, offshore oil containing major product
Container, weight chemical reaction tower steel, large-scale tool and mould steel.The common feature of these steel is: high-intensitive, big substance, big thickness
Spend, some it is stringent to steel purity, inclusion behavior requirement.Major part requires ultrasonic examination qualified, but every kind of product batch
Very big, and added value of product is high, this be general steel mode cannot and.Therefore, since 2010 it is domestic it is specialized it is excellent,
Special Steel Enterprise starts to rise.But because the product quality requires height, purposes is again important, needs to promote new technology and new process
Application, what is stood in the breach here is exactly the development and application of furnace outer refining technology, and wherein ladle bottom argon blowing device is furnace
The basis of outer refining.
During refinement outside-furnace, it is uniform molten steel chemical analysis and temperature, steel inclusion is promoted to float, usually adopt
Molten steel is stirred with the mode of ladle bottom blowing argon gas.Conventional Bottom Argon Blowing Device is poor to gas control effect, when argon gas stream
Measure hour, mixing effect is weaker, cause the top of the slag crust, sample it is under-represented；When argon flow is big, it is easy to make liquid steel level
Acutely boiling generates temperature drop, and makes the exposed ingress of air of molten steel, pollutes to molten steel cleanliness.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of steel ladle bottom argon blowing device and its refining stirring means, can solve
Certainly the deficiencies in the prior art realize argon gas good refining mixing effect in ladle, after coming into operation to reduce steel in press from both sides
Sundries rank, uniform molten steel chemical analysis, temperature improve significantly.
In order to solve the above technical problems, the technical solution used in the present invention is as follows.
A kind of steel ladle bottom argon blowing device, including the ladle layer of resistance to material, the ladle layer of resistance to material bottom are equipped with air brick, on air brick
Side is provided with ventilative layer of sand, is connected with argon delivery lines below air brick, by being disposed with except interior inside the air brick
First goes out compression ring, second, and compression ring and third go out compression ring out, and first, which goes out compression ring, is connect by the first branch pipe with argon delivery lines, and second
Compression ring is connect by the second branch pipe with argon delivery lines out, and third goes out compression ring and connect by third branch pipe with argon delivery lines, the
Throttle valve is respectively arranged on one branch pipe, the second branch pipe and third branch pipe；First go out compression ring on be evenly arranged with several first
The angle of venthole, the first venthole and vertical direction is 10 °~20 °, second go out on compression ring to be evenly arranged with several second
Venthole, the second venthole is parallel with vertical direction, and third goes out on compression ring to be evenly arranged with several third ventholes, third
The angle of venthole and vertical direction is 10 °~20 °, and the first venthole is opposite with the inclined direction of third venthole.
Preferably, the air inlet side in each throttle valve is provided with cushion chamber.
Preferably, several demarcation plates being parallel to each other are provided in first venthole, two adjacent separations
Board bottom portion is connected with spiral stream guidance pipe.
Preferably, the side of the demarcation plate is provided with arc-shaped concave.
Preferably, the two sides of second venthole are respectively arranged with the first by-pass prot and the second by-pass prot, by the of first
Through-hole is parallel to each other between the first venthole and the second venthole, and with the first venthole, and the second by-pass prot is located at second
Between venthole and third venthole, and it is parallel to each other with third venthole.
Preferably, the ratio between first venthole, the aperture of the second venthole and third venthole are 2:5:2.
Preferably, being provided with blade at the top of the third venthole, several are provided on the outside of third venthole
The diversion trench being connected with third venthole.
Preferably, the diversion trench top surface is provided with the inclined plane part being inclined outwardly, the bottom surface of diversion trench is provided with tooth form
Portion.
A kind of refining stirring means of above-mentioned steel ladle bottom argon blowing device, comprising the following steps:
A, the second branch pipe is first turned on, goes out compression ring to second and is passed through argon gas；
B, after the argon flow for going out compression ring after second is stablized, while the first branch pipe and third branch pipe are opened, to the first outlet
Ring and third go out compression ring and are passed through argon gas；
C, after the argon flow for going out compression ring after three is stable, pass through the argon gas supply of the first branch pipe of control and third branch pipe
Amount realizes that the first periodical alternating that compression ring and third go out compression ring argon flow out changes, when the argon flow that first goes out compression ring
When increase, the argon flow that third goes out compression ring reduces, and when third goes out the argon flow increase of compression ring, first goes out the argon gas of compression ring
Flow reduces.
Brought beneficial effect is by adopting the above technical scheme: the present invention passes through the air passage structure for improving refractory brick,
Inside and outside two flow circuits are formed in molten steel using three layers of ventilation device, improve the mixing evenness of molten steel, and having
The dosage of argon gas is reduced under the premise of effect deslagging, it is therefore prevented that argon flow is excessive to lead to the exposed air-breathing of molten steel.Second goes out compression ring
It is isolated for the region to molten steel inner-outer circulation, is interfered with each other with reducing.Since the first venthole is close to the center of ladle,
So the first venthole is split using demarcation plate, improve the jet dispersion degree of the first venthole, to avoid impurity in steel
The aggregation of packet center.Air-flow flows through spiral stream guidance pipe, forms helical flow trend, is used to further improve argon gas bubbles for impurity
Absorption carrying capacity, improve deslagging effect.When air-flow flows through third venthole, under the guide functions of blade, fraction
It is distributed in each diversion trench, and be diffused in diversion trench, can effectively expand ladle edge airflow flow, guarantee entire
The distribution consistency degree of argon gas bubbles in ladle.Inclined plane part is used to reduce argon gas in diversion trench to the resistance of external diffusion, diversion trench
The toothed region of bottom is used to disturb the argon gas of circulation, accelerates the speed that argon gas diffuses up.Second venthole be used to pair
Inside and outside two agitation cycles are isolated, and the first by-pass prot and the second by-pass prot can make the air-flow of the second venthole two sides and outer
The flow direction of circulating current and interior circulating current is consistent, and reduces the mutual disturbance of the second outlet hole site air-flow.
Detailed description of the invention
Fig. 1 is the structure chart of a specific embodiment of the invention.
Fig. 2 is the structure chart of the first venthole in a specific embodiment of the invention.
Fig. 3 is the structure chart of the second venthole in a specific embodiment of the invention.
Fig. 4 is the structure chart of third venthole in a specific embodiment of the invention.
Fig. 5 is the structure chart of diversion trench in a specific embodiment of the invention.
In figure: 1, the ladle layer of resistance to material；2, air brick；3, ventilative layer of sand；4, argon delivery lines；5, first goes out compression ring；6,
Two go out compression ring；7, third goes out compression ring；8, the first branch pipe；9, the second branch pipe；10, third branch pipe；11, throttle valve；12, the first outlet
Hole；13, the second venthole；14, third venthole；15, cushion chamber；16, demarcation plate；17, spiral stream guidance pipe；18, arc-shaped concave；
19, the first by-pass prot；20, the second by-pass prot；21, blade；22, diversion trench；23, inclined plane part；24, toothed region；25, third bypasses
Hole.
Specific embodiment
Referring to Fig.1-5, the specific embodiment of the present invention includes the ladle layer of resistance to material 1, the installation of 1 bottom of the ladle layer of resistance to material
There is air brick 2, ventilative layer of sand 3 is provided with above air brick 2, argon delivery lines 4, the air brick 2 are connected with below air brick 2
Inside goes out that compression ring 5, second goes out compression ring 6 and third goes out compression ring 7 by being disposed with first except interior, and first goes out compression ring 5 by the
One branch pipe 8 is connect with argon delivery lines 4, and second, which goes out compression ring 6, is connect by the second branch pipe 9 with argon delivery lines 4, and third goes out compression ring
7 are connect by third branch pipe 10 with argon delivery lines 4, are respectively arranged on the first branch pipe 8, the second branch pipe 9 and third branch pipe 10
Throttle valve 11；First goes out on compression ring 5 to be evenly arranged with several the first ventholes 12, the folder of the first venthole 12 and vertical direction
Angle is 12 °, and second goes out on compression ring 6 to be evenly arranged with several the second ventholes 13, and the second venthole 13 is equal with vertical direction
Row, third go out on compression ring 7 to be evenly arranged with several third ventholes 14, and third venthole 14 and the angle of vertical direction are
17 °, the first venthole 12 is opposite with the inclined direction of third venthole 14.The air inlet side of each throttle valve 11 is provided with buffering
Chamber 15.Several demarcation plates 16 being parallel to each other, adjacent two 16 bottoms of demarcation plate connection are provided in first venthole 12
There is spiral stream guidance pipe 17.The side of demarcation plate 16 is provided with arc-shaped concave 18.The two sides of two ventholes 13 are respectively arranged with first
By-pass prot 19 and the second by-pass prot 20, the first by-pass prot 19 is between the first venthole 12 and the second venthole 13, and with
One venthole 12 is parallel to each other, and the second by-pass prot 20 goes out between the second venthole 13 and third venthole 14, and with third
Stomata 14 is parallel to each other.The ratio between aperture of first venthole 12, the second venthole 13 and third venthole 14 is 2:5:2.Third
The top of venthole 14 is provided with blade 21, and the outside of third venthole 14 is provided with several and is connected with third venthole 14
Diversion trench 22.22 top surface of diversion trench is provided with the inclined plane part 23 being inclined outwardly, and the bottom surface of diversion trench 22 is provided with toothed region 24.
In addition, being provided with third by-pass prot 25 in the inside of the first venthole 12, ladle is can be improved in third by-pass prot 25
The molten steel in centre carries out rotation flow velocity from the bottom to top with argon stream, improves the mixing effect of molten steel.
A kind of refining stirring means of above-mentioned steel ladle bottom argon blowing device, comprising the following steps:
A, the second branch pipe 9 is first turned on, goes out compression ring 6 to second and is passed through argon gas；
B, after the argon flow for going out compression ring 6 after second is stablized, while the first branch pipe 8 and third branch pipe 10 are opened, to first
Compression ring 5 and third go out compression ring 7 and are passed through argon gas out；
C, after the argon flow for going out compression ring after three is stable, pass through the argon gas of the first branch pipe 8 and third branch pipe 10 of control
Supply realizes that the first periodical alternating that compression ring 5 and third go out 7 argon flow of compression ring out changes, when the argon that first goes out compression ring 5
When throughput increases, the argon flow that third goes out compression ring 7 reduces, when third goes out the argon flow increase of compression ring 7, the first outlet
The argon flow of ring 5 reduces；
First, which goes out compression ring 5 and third, goes out the argon flow change rate of compression ring 7 respectively according to ladle central temperature and ladle side
Edge temperature is adjusted:
Wherein, a1The flow change rate for going out compression ring 5 for first, a3Go out the flow change rate of compression ring 7, T for third1For ladle
Central temperature, T2For ladle lip temperature；
And when the first flow that compression ring 5 and third go out compression ring 7 out is changed, go out compression ring 6 by adjusting second in real time
Argon flow, guarantee the constant of entire ladle argon gas charge.
When each argon gas branch pipe carries out flow adjusting, to other when cushion chamber 15 can reduce different branch pipe changes in flow rate
The interference of pipe flow.
The technological effect of steel ladle bottom argon blowing gas agitating can be improved in the present invention, has a good application prospect.
Foregoing description is only proposed as the enforceable technical solution of the present invention, not as to the single of its technical solution itself
Restrictive condition.
Claims (4)
1. a kind of steel ladle bottom argon blowing device, including the ladle layer of resistance to material (1), the ladle layer of resistance to material (1) bottom is equipped with air brick (2),
It is provided with ventilative layer of sand (3) above air brick (2), is connected with argon delivery lines (4) below air brick (2), it is characterised in that: institute
It states and is disposed with first inside air brick (2) from the inside to the outside and goes out compression ring (5), second go out compression ring (6) and third goes out compression ring (7),
First, which goes out compression ring (5), is connect by the first branch pipe (8) with argon delivery lines (4), and second, which goes out compression ring (6), passes through the second branch pipe (9)
It is connect with argon delivery lines (4), third goes out compression ring (7) and connect by third branch pipe (10) with argon delivery lines (4), the first branch pipe
(8), throttle valve (11) are respectively arranged on the second branch pipe (9) and third branch pipe (10)；First goes out on compression ring (5) to be evenly arranged with
The angle of several first ventholes (12), the first venthole (12) and vertical direction is 10 °~20 °, and second goes out on compression ring (6)
Several the second ventholes (13) are evenly arranged with, the second venthole (13) is parallel with vertical direction, and third goes out on compression ring (7)
It is evenly arranged with several third ventholes (14), the angle of third venthole (14) and vertical direction is 10 °~20 °, first
Venthole (12) is opposite with the inclined direction of third venthole (14)；Several are provided in first venthole (12) to be parallel to each other
Demarcation plate (16), two adjacent demarcation plate (16) bottoms are connected with spiral stream guidance pipe (17)；The two of second venthole (13)
Side is respectively arranged with the first by-pass prot (19) and the second by-pass prot (20), the first by-pass prot (19) be located at the first venthole (12) and
It between second venthole (13), and is parallel to each other with the first venthole (12), the second by-pass prot (20) is located at the second venthole
(13) it between third venthole (14), and is parallel to each other with third venthole (14)；The top of third venthole (14) is arranged
Have blade (21), several diversion trenches being connected with third venthole (14) are provided on the outside of third venthole (14)
(22)；Diversion trench (22) top surface is provided with the inclined plane part (23) being inclined outwardly, and the bottom surface of diversion trench (22) is provided with toothed region
(24)；The side of the demarcation plate (16) is provided with arc-shaped concave (18).
2. steel ladle bottom argon blowing device according to claim 1, it is characterised in that: set in the air inlet side of each throttle valve (11)
It is equipped with cushion chamber (15).
3. steel ladle bottom argon blowing device according to claim 1, feature exist: first venthole (12), the second outlet
The ratio between hole (13) and the aperture of third venthole (14) are 2:5:2.
4. a kind of refining stirring means of steel ladle bottom argon blowing device described in claim 1-3 any one, it is characterised in that packet
Include following steps:
A, the second branch pipe (9) are first turned on, goes out compression ring (6) to second and is passed through argon gas；
B, after the argon flow for going out compression ring (6) after second is stablized, while the first branch pipe (8) and third branch pipe (10) are opened, to the
One, which goes out compression ring (5) and third, goes out compression ring (7) and is passed through argon gas；
C, after the argon flow for going out compression ring after three is stable, pass through the argon gas of control the first branch pipe (8) and third branch pipe (10)
Supply realizes that first goes out compression ring (5) and third and go out the periodical of compression ring (7) argon flow and alternately change, when the first compression ring out
(5) when argon flow increases, the argon flow that third goes out compression ring (7) reduces, when the argon flow that third goes out compression ring (7) increases
When, the first argon flow for going out compression ring (5) reduces.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711204523.8A CN107739778B (en) | 2017-11-27 | 2017-11-27 | A kind of steel ladle bottom argon blowing device and its refining stirring means |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711204523.8A CN107739778B (en) | 2017-11-27 | 2017-11-27 | A kind of steel ladle bottom argon blowing device and its refining stirring means |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107739778A CN107739778A (en) | 2018-02-27 |
| CN107739778B true CN107739778B (en) | 2019-03-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201711204523.8A Active CN107739778B (en) | 2017-11-27 | 2017-11-27 | A kind of steel ladle bottom argon blowing device and its refining stirring means |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108516848A (en) * | 2018-05-18 | 2018-09-11 | 广西长城机械股份有限公司 | A kind of refined cast iron system containing novel ventilated brick |
| CN112795726B (en) * | 2020-12-25 | 2022-08-02 | 中航上大高温合金材料有限公司 | Ladle refining furnace and dephosphorization method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08143942A (en) * | 1994-11-18 | 1996-06-04 | Toshiba Ceramics Co Ltd | Plug for gas blowing and its manufacture |
| CN2547737Y (en) * | 2002-02-09 | 2003-04-30 | 安阳钢铁集团有限责任公司 | Molten iron desiliconizing and decarbonizing apparatus |
| CN200974858Y (en) * | 2006-11-15 | 2007-11-14 | 中国恩菲工程技术有限公司 | Oxygen gun device for oxygen bottom-blowing smelting furnace |
| CN200988859Y (en) * | 2006-11-16 | 2007-12-12 | 中国恩菲工程技术有限公司 | Oxygen bottom blowing melting furnace |
| CN204159854U (en) * | 2014-10-13 | 2015-02-18 | 长兴正发热电耐火材料有限公司 | Tundish bottom blowing structure |
-
2017
- 2017-11-27 CN CN201711204523.8A patent/CN107739778B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08143942A (en) * | 1994-11-18 | 1996-06-04 | Toshiba Ceramics Co Ltd | Plug for gas blowing and its manufacture |
| CN2547737Y (en) * | 2002-02-09 | 2003-04-30 | 安阳钢铁集团有限责任公司 | Molten iron desiliconizing and decarbonizing apparatus |
| CN200974858Y (en) * | 2006-11-15 | 2007-11-14 | 中国恩菲工程技术有限公司 | Oxygen gun device for oxygen bottom-blowing smelting furnace |
| CN200988859Y (en) * | 2006-11-16 | 2007-12-12 | 中国恩菲工程技术有限公司 | Oxygen bottom blowing melting furnace |
| CN204159854U (en) * | 2014-10-13 | 2015-02-18 | 长兴正发热电耐火材料有限公司 | Tundish bottom blowing structure |
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| CN107739778A (en) | 2018-02-27 |
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Address after: 054800 No.16, Huagong Avenue, Qinghe County, Xingtai City, Hebei Province Patentee after: AVIC Shangda superalloy materials Co.,Ltd. Address before: 054800 No.16, Huagong Avenue, Qinghe County, Xingtai City, Hebei Province Patentee before: AVIC SHANGDA SUPER ALLOYS Co.,Ltd. |
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