CN107299189A - The device and its application method of a kind of spraying of electric furnace blown inert gas - Google Patents
The device and its application method of a kind of spraying of electric furnace blown inert gas Download PDFInfo
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- CN107299189A CN107299189A CN201710495390.8A CN201710495390A CN107299189A CN 107299189 A CN107299189 A CN 107299189A CN 201710495390 A CN201710495390 A CN 201710495390A CN 107299189 A CN107299189 A CN 107299189A
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- inert gas
- electric furnace
- air supply
- spraying
- supply device
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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
- C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
- C21C5/52—Manufacture of steel in electric furnaces
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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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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
Abstract
The invention discloses a kind of device of spraying of electric furnace blown inert gas, backup lining brick has been built inside the electric furnace by laying bricks or stones, the device of the injection inert gas includes N number of air supply device, N >=1；N number of air supply device is respectively embedded into being arranged in N number of backup lining brick of formula, and is brought into close contact with the backup lining brick；One end of N number of air supply device is communicated with inside the electric furnace, is the electric furnace side injection inert gas, and the other end of N number of air supply device is connected with outside feeder.Meanwhile, the invention also discloses a kind of application method of spraying of electric furnace blown inert gas device.Beneficial effects of the present invention are：Device traffic channel is more, with assignable gas flow regulatory function, and gas flow is controllable, and flow adjustment range is big, is adapted to the control and regulation of electric furnace gas flow；The blowing direction of spraying of electric furnace blown inert gas device of the present invention is level, downward or upward, intersects with the oxygen flow of furnace door oxygen lance, compensate for the deficiency of furnace door oxygen lance agitation molten pool.
Description
Technical field
The present invention relates to Electric Furnace Steelmaking field, more particularly to a kind of spraying of electric furnace blown inert gas device and its use
Method.
Background technology
Oxygen supply and stirring are generally carried out to molten bath using furnace door oxygen lance in electric furnace smelting, with adding for a large amount of slag materials
Enter, only the stirring capacity by furnace door oxygen lance be not sufficient to ensure that blowing during molten bath liveness.
Number of patent application is CN200910010485.1, entitled bottom blowing orienting stephanoporate air brick body for electric furnace and
Its manufacture method, the method for disclosing electric furnace bottom blowing, the problem of can solve the problem that electric furnace melting bath stirring scarce capacity, but it is upper in application
The problem of existing is more, is mainly manifested in：
(1) thus there is electric furnace eccentric-bottom, tapping rear portion slag is stayed in electric furnace, and bottom blowing element is easily blocked, extensive
Multiple processing is difficult, and the life-span is low, it is difficult to which lining durability is synchronous；
(2) due in smelting process bottom blowing control it is bad, be also easy to produce the accident of bleed-out, have impact on the normal production of electric furnace.
The problem of above, limits the application of electric furnace bottom blowing inert gas method, therefore, seeks a kind of new device and side
Method realizes that electric furnace highly effective, safety, long-life injection inert gas are very important.
The content of the invention
In view of above-mentioned analysis, the present invention is intended to provide the device and its application method of a kind of spraying of electric furnace blown inert gas,
To solve, bottom blowing element in the prior art is easily blocked, traffic channel is single, the uncontrollable problem of gas flow.
The purpose of the present invention is mainly achieved through the following technical solutions：
Backup lining brick, the injection inert gas are built inside a kind of device of spraying of electric furnace blown inert gas, the electric furnace by laying bricks or stones
Device include N number of air supply device, N >=1；N number of air supply device be respectively embedded into formula be arranged on N number of backup lining brick in, and with
The backup lining brick is brought into close contact；One end of N number of air supply device is communicated with inside the electric furnace, is that the electric furnace side is sprayed
Blown inert gas, the other end of N number of air supply device is connected with outside feeder.
The device of spraying of electric furnace blown inert gas of the present invention be more suitable for efficiency electric furnace gas flow control model and efficiently
The smelting process of electric furnace, improves Gas Stirring efficiency.
Further, the direction of the device injection inert gas of the injection inert gas and electric furnace molten bath plane
Angular range is -30 °~+30 °.
Injection angle is set to -30 °~+30 ° by the present invention, and so control angle is to ensure that gas blows in different directions
Enter molten bath, to ensure the effect of injection；It ensure that the gas of injection is stirred by different angles to molten bath simultaneously, remove
The dead angle of stirring, improves the efficiency of Gas Stirring.
Further, EAF bottom minimum point described in the air supply device injection positional distance is 0.3~1.0m.
The injection position of air supply device is arranged on apart from EAF bottom 0.3~1.0m of minimum point by the present invention, can be to molten
Pond is stirred, and realizes that whole process supplies inert gas, while prevent that being blown into gas enters molten bath, and it is small to the impact of furnace lining.
Further, the air supply device includes air chamber, air inlet pipe and air supply pipe, the air inlet pipe and the air chamber phase
Even, the air chamber is connected with the air supply pipe, and inert gas passes sequentially through the air inlet pipe, air chamber and air supply pipe and enters electric furnace
It is interior.
Air supply unit of the present invention uses air inlet pipe, air chamber and air supply pipe, ensure that delivery ratio is more steady, is difficult leakage.
Further, the air supply device is sleeve pipe or convergent-divergent channel.
Present invention selection Bearing score pipe ensure that blowing gas keeps supersonic speed, improves the injecting velocity of gas, stirs more by force
Mix effect.
Further, the range of Mach numbers of the air supply device is 1~2.5.
The Mach number of present invention selection 1~2.5, can strengthen mixing effect.
Further, the inert gas includes nitrogen and argon gas, and the range of flow of every air supply device is 0~100NL/
min。
Present invention selection range of flow has certain stirring power for the 0~100NL/min flow that ensure that supply
Power, and then improve mixing effect.
Further, the position and the position of furnace door oxygen lance of the injection inert gas installation intersect.
Blowing device of the present invention intersects with fire door is able to ensure that stirring a position, does not promote the mixing effect in molten bath.
Further, the number of the air supply device is 1~10.
Air supply device of the present invention, which selects 1~10, can improve melting bath stirring effect.
Further, the number of the air supply device is more than or equal to electric stove door oxygen rifle number.
It is to improve the mixing effect in molten bath that the number of air supply device of the present invention, which is more than or equal to electric stove door oxygen rifle number,.
A kind of method that use described device is blown inert gas, the spraying of electric furnace blown inert gas device is blown indifferent gas
The traffic intensity of body is engaged with the oxygen flow intensity of furnace door oxygen lance, when oxygen blast intensity is more than 3.0~4.0Nm3/t·min
When, side-blown inert gas strength control is in 0.02~0.04Nm3/t·min；When oxygen blast intensity is less than 3.0Nm3During/tmin, side
Blown inert gas strength control is in 0.04~0.08Nm3/t·min。
The oxygen stream of the traffic intensity of spraying of electric furnace blown inert gas device injection inert gas and furnace door oxygen lance in the present invention
Amount intensity is determined by the display of oxygen flow in operating room, the flowmeter of inert gas flow.
Application method of the present invention ensure that the stirring capacity that molten bath is remained in electric furnace converting process, it is to avoid only use stove
The dead angle of the melting bath stirring of door oxygen rifle, promotes carbon, oxygen, the balance of phosphorus in molten steel, realizes that reduction electric furnace smelting raw material and alloy disappear
The purpose of consumption.
The present invention has the beneficial effect that：
(1) compared with converter (or AOD) side-blown mode, injection inert gas installation of the invention is more suitable for efficiency electric furnace
Smelting process；Because the shaft height of electric furnace is lower than converter, pool depth is more shallow than converter, electric furnace shaft insertion furnace door oxygen
Rifle and the pipeline of burning, and converter body is fitted without any equipment, therefore, side-blown device is designed on electric furnace body and compares converter
It is difficult many；
(2) compared with the side-blown element design method of converter (or AOD), injection inert gas installation of the invention is more suitable for
The gas flow control model of efficiency electric furnace；Apparatus of the present invention traffic channel is more, with assignable gas flow regulatory function,
Gas flow is controllable, and flow adjustment range is big, is adapted to the control and regulation of electric furnace gas flow；
(3) the Gas injection direction of spraying of electric furnace blown inert gas device of the present invention is level, downward or upward, with fire door
The oxygen flow of oxygen rifle intersects, and compensate for the deficiency of furnace door oxygen lance agitation molten pool.
Other features and advantages of the present invention will illustrate in the following description, also, partial feature and advantage from
Become apparent, or understood by implementing the present invention in specification.The purpose of the present invention and other advantages can by
Specifically noted structure is realized and obtained in specification, claims and the accompanying drawing write.
Brief description of the drawings
Accompanying drawing is only used for showing the purpose of specific embodiment, and is not considered as limitation of the present invention, in whole accompanying drawing
In, identical reference symbol represents identical part.
Fig. 1 is the device arrangement front view of the spraying of electric furnace blown inert gas of the horizontal of the embodiment of the present invention 1；
Fig. 2 is the arrangement top view of the device of the spraying of electric furnace blown inert gas of the horizontal of the embodiment of the present invention 1；
Fig. 3 is the feeder schematic diagram that the backup lining brick of the embodiment of the present invention 1 is embedded in 3 steel pipes with air chamber；
Fig. 4 is the arrangement front view of the device of the spraying of electric furnace blown inert gas of the horizontal of the embodiment of the present invention 2；
Fig. 5 is the arrangement top view of the device of the spraying of electric furnace blown inert gas of the horizontal of the embodiment of the present invention 2；
Fig. 6 is the feeder schematic diagram that the backup lining brick of the embodiment of the present invention 2 is embedded in 3 steel pipes without air chamber；
Fig. 7 is the arrangement front view of the device of the spraying of electric furnace blown inert gas of the horizontal of the embodiment of the present invention 3；
Fig. 8 is the arrangement top view of the device of the spraying of electric furnace blown inert gas of the horizontal of the embodiment of the present invention 3；
The backup lining brick of Fig. 9 embodiment of the present invention 3 is embedded in the air supply device schematic diagram of Bearing score form of tubes.
In figure, 1- furnace linings, 2- backup lining bricks, 3- air supply devices, 4- air inlet pipe, 5- air chambers, 6- escape pipes, the spray of 7- Lavalles
Mouth, 8- jet pipes.
Embodiment
The preferred embodiments of the present invention are specifically described below in conjunction with the accompanying drawings, wherein, accompanying drawing constitutes the application part, and
It is used for the principle for explaining the present invention together with embodiments of the present invention.
The device of three kinds of injection inert gases is devised in 50t electric furnaces, to obtain more preferable electric furnace mixing effect.This hair
The device of bright injection inert gas is arranged on furnace lining, and the device of injection inert gas includes backup lining brick and air supply device, supply
Element is embedded into backup lining brick, and air supply device has entrance and exit, exports in electric furnace, entrance is connected on ring flange, method
Blue disk is welded on furnace shell, wherein, the metal hose of ventilation is connected on ring flange, source of the gas is provided for air supply device.Equipped with supply
The size of the backup lining brick of element and the backup lining brick normally built by laying bricks or stones is the same, and building by laying bricks or stones for furnace lining is that sector is built by laying bricks or stones, builds brick by laying bricks or stones long
600mm, major part portion size 100mm × 120mm, microcephaly part 100mm × 120mm.
The implementation having is as follows：
Embodiment 1
The present embodiment is directed to 50t electric furnaces, and the arrangement of the device of the injection inert gas of use is as shown in Figure 1, 2, sharp
With inert gas by being arranged in the side-blown air supply device away from furnace bottom minimum point 0.5m, intersect with the position of furnace door oxygen lance, its
Blowing direction is level, and the angle with molten bath plane is 0 °；The device of the present embodiment injection inert gas is by 4 backup lining bricks and 4
Individual air supply device composition, air supply device is embedded into backup lining brick, and air supply device in the way of bath level by with building by laying bricks or stones in electric furnace
On lining, each air supply device is made up of air inlet pipe, air chamber and escape pipe, wherein air inlet pipe 1, escape pipe 3, air inlet pipe
It is connected with air chamber, air chamber is connected with escape pipe.
The present embodiment air supply device has 4, is respectively arranged in 4 backup lining bricks, meanwhile, inert gas installation difference is uniform
The surrounding of electrode is arranged in, per side 2.
Each air supply device is made up of air inlet pipe, air chamber and escape pipe, is specifically shown in Fig. 3, wherein air inlet pipe 1, outlet
Pipe 3, air inlet pipe is connected with air chamber, and air chamber is connected with escape pipe, a diameter of 2mm of air inlet pipe, a diameter of 1mm of escape pipe, gas
The size of room is 20mm × 20mm × 40mm, and the volume of air chamber is 16cm3.Specific connected mode is an air inlet pipe and air chamber
Connection, escape pipe separates three, entered in electric furnace.
The application method for being blown inert gas installation is during electric furnace smelting, to be stirred using nitrogen, argon gas as bottom blowing
Source of the gas is mixed, air blowing flow is as shown in table 1.
The injection process of inert gas has matching relationship with blowing oxygen flow in the present embodiment, when oxygen blast intensity is more than
3.0-4.0Nm3During/tmin, side-blown inert gas strength control is in 0.02-0.04Nm3/t·min；When oxygen blast intensity is less than
3.0Nm3During/tmin, side-blown inert gas strength control is in 0.04-0.08Nm3/t·min。
Side-blown control model/the NL/min of the electric furnace of table 1
| Operation stage | One phase | Second phase | Three phases | Refining period | Tapping |
| 1-3 stoves | 40 | 40 | 40 | 40 | 40 |
| 4-10 stoves | 120 | 120 | 120 | 120 | 120 |
| 10-50 stoves | 160 | 160 | 160 | 160 | 160 |
| >50 stoves | 200 | 200 | 200 | 200 | 200 |
| Process time/min | 40 | 40 | 40 | 40 | 40 |
| Bottom Blowing is all kinds of | Nitrogen | Nitrogen | Nitrogen | Argon gas | Argon gas |
| Signal is originated | Timing | Timing | Timing | Timing | Furnace wall gun stops oxygen |
Use the feeder and air supply method of the present embodiment, it is ensured that the control of the carbon oxygen of blowing end point product 0.0030 with
It is interior.
Embodiment 2
The present embodiment is directed to 50t electric furnaces, arrangement such as Fig. 4 in electric furnace of device of the injection inert gas of use, 5
Shown, the present embodiment is blown the device of inert gas, using inert gas by being arranged in away from the side-blown of furnace bottom minimum point 0.5m
Air supply device, intersect with the position of furnace door oxygen lance, it with the angle α of molten bath plane is 10 ° that its blowing direction, which is, inert gas dress
Put and be made up of 6 backup lining bricks and 6 air supply devices, air supply device is embedded into backup lining brick, air supply device with molten bath into 10 degree
Mode build by laying bricks or stones on electric furnace lining, each air supply device is made up of 3 two layers of steel pipes, ring of the gas between two steel pipes
Pass through in seam.
Air supply device in the present embodiment has 6, is respectively embedded in 6 backup lining bricks, meanwhile, inert gas installation difference
The surrounding of electrode is evenly arranged in, per side 3.
Backup lining brick is embedded in the air supply device of 3 steel pipes without air chamber, sees Fig. 6, each air supply device be by 3 two layers
Steel pipe composition, inert gas passes through in the circumferential weld between two steel pipes；The outer layer pipe of the present embodiment air supply device is a diameter of
2mm, a diameter of 1mm of inner layer steel pipe, the length of steel pipe is 650mm.
The application method for being blown inert gas installation is during electric furnace smelting, to be stirred using nitrogen, argon gas as bottom blowing
Source of the gas is mixed, air blowing flow is as shown in table 2.
Side-blown control model/the NL/min of the electric furnace of table 2
| Operation stage | One phase | Second phase | Three phases | Refining period | Tapping |
| 1-3 stoves | 60 | 60 | 60 | 60 | 60 |
| 4-10 stoves | 180 | 180 | 180 | 180 | 180 |
| 10-50 stoves | 240 | 240 | 240 | 240 | 240 |
| >50 stoves | 300 | 300 | 300 | 300 | 300 |
| Process time/min | 60 | 60 | 60 | 60 | 60 |
| Bottom Blowing is all kinds of | Nitrogen | Nitrogen | Nitrogen | Argon gas | Argon gas |
| Signal is originated | Timing | Timing | Timing | Timing | Furnace wall gun stops oxygen |
The injection process of inert gas has matching relationship with blowing oxygen flow in the present embodiment, when oxygen blast intensity is more than
3.0-4.0Nm3During/tmin, side-blown inert gas strength control is in 0.02-0.04Nm3/t·min；When oxygen blast intensity is less than
3.0Nm3During/tmin, side-blown inert gas strength control is in 0.04-0.08Nm3/t·min。
Use the feeder and air supply method of the present embodiment, it is ensured that the control of the carbon oxygen of blowing end point product 0.0028 with
It is interior.
Embodiment 3
The present embodiment is directed to 50t electric furnaces, and the arrangement of the device of the injection inert gas of use is as shown in Figure 7,8, sharp
With inert gas by being arranged in the side-blown air supply device away from furnace bottom minimum point 0.5m, intersect with the position of furnace door oxygen lance, its
The angle of blowing direction and molten bath plane is -10 °, and inert gas installation is made up of 8 backup lining bricks and 8 air supply devices, supply
Element is embedded into backup lining brick, and air supply device is built by laying bricks or stones on electric furnace lining in the way of being spent with molten bath into -10, each supply member
Part is the element composition of Bearing score form of tubes.
Air supply device has 8, is separately mounted in 8 backup lining bricks, meanwhile, 8 backup lining bricks are evenly arranged in electrode respectively
Surrounding, per side 4.
Backup lining brick is embedded in the air supply device for first shrinking the Bearing score form of tubes expanded afterwards, sees Fig. 9.It is every in the present embodiment
Individual air supply device is all Bearing score form of tubes, and length is 650mm, and contraction segment length is 8mm, and throat diameter is 3mm, outlet diameter
For 8mm, expansion ratio length is 20mm.
The application method for being blown inert gas installation is during electric furnace smelting, to be stirred using nitrogen, argon gas as bottom blowing
Source of the gas is mixed, air blowing flow is as shown in table 3.
Side-blown control model/the NL/min of the electric furnace of table 3
| Operation stage | One phase | Second phase | Three phases | Refining period | Tapping |
| 1-3 stoves | 80 | 80 | 80 | 80 | 80 |
| 4-10 stoves | 240 | 240 | 240 | 240 | 240 |
| 10-50 stoves | 320 | 320 | 320 | 320 | 320 |
| >50 stoves | 400 | 400 | 400 | 400 | 400 |
| Process time/min | 80 | 80 | 80 | 80 | 80 |
| Bottom Blowing is all kinds of | Nitrogen | Nitrogen | Nitrogen | Argon gas | Argon gas |
| Signal is originated | Timing | Timing | Timing | Timing | Furnace wall gun stops oxygen |
The injection process of inert gas has matching relationship with blowing oxygen flow in the present embodiment, when oxygen blast intensity is more than
3.0-4.0Nm3During/tmin, side-blown inert gas strength control is in 0.02-0.04Nm3/t·min；When oxygen blast intensity is less than
3.0Nm3During/tmin, side-blown inert gas strength control is in 0.04-0.08Nm3/t·min。
Use the feeder and air supply method of the present embodiment, it is ensured that the control of the carbon oxygen of blowing end point product 0.0025 with
It is interior.
In summary, the invention provides a kind of device of spraying of electric furnace blown inert gas and its application method, present invention dress
Put traffic channel many, with assignable gas flow regulatory function, gas flow is controllable, flow adjustment range is big, be adapted to electricity
The control and regulation of furnace gases flow；Meanwhile, the Gas injection direction of spraying of electric furnace blown inert gas device be level, downwards or to
On, intersect with the oxygen flow of furnace door oxygen lance, compensate for the deficiency of furnace door oxygen lance agitation molten pool.
The foregoing is only a preferred embodiment of the present invention, but protection scope of the present invention be not limited thereto,
Any one skilled in the art the invention discloses technical scope in, the change or replacement that can be readily occurred in,
It should all be included within the scope of the present invention.
Claims (10)
1. a kind of device of spraying of electric furnace blown inert gas, it is characterised in that built backup lining brick, the injection inside the electric furnace by laying bricks or stones
The device of inert gas includes N number of air supply device, N >=1；N number of air supply device be respectively embedded into formula be arranged on N number of backup lining brick
It is interior, and be brought into close contact with the backup lining brick；One end of N number of air supply device is communicated with inside the electric furnace, is the electricity
Furnace side face is blown inert gas, and the other end of N number of air supply device is connected with outside feeder.
2. a kind of device of spraying of electric furnace blown inert gas according to claim 1, it is characterised in that the injection indifferent gas
It is -30 °~+30 ° that the device of body, which is blown the direction of inert gas with the angular range of electric furnace molten bath plane,.
3. a kind of device of spraying of electric furnace blown inert gas according to claim 1 or 2, it is characterised in that the supply member
EAF bottom minimum point described in part injection positional distance is 0.3~1.0m.
4. a kind of device of spraying of electric furnace blown inert gas according to claim 3, it is characterised in that the air supply device bag
Air chamber, air inlet pipe and air supply pipe are included, the air inlet pipe is connected with the air chamber, and the air chamber is connected with the air supply pipe, inertia
Gas passes sequentially through the air inlet pipe, air chamber and air supply pipe and entered in electric furnace.
5. a kind of device of spraying of electric furnace blown inert gas according to claim 3, it is characterised in that the air supply device is
Sleeve pipe or convergent-divergent channel；The range of Mach numbers of the air supply device is 1~2.5.
6. a kind of device of spraying of electric furnace blown inert gas according to claim 4 or 5, it is characterised in that the indifferent gas
Body includes nitrogen and argon gas, and the range of flow of every air supply device is 0~100NL/min.
7. a kind of device of spraying of electric furnace blown inert gas according to claim 6, it is characterised in that the injection indifferent gas
The position of body device intersects with the position of furnace door oxygen lance.
8. the device of a kind of spraying of electric furnace blown inert gas according to claim 7, it is characterised in that the air supply device
Number is 1~10.
9. the device of a kind of spraying of electric furnace blown inert gas according to claim 8, it is characterised in that the air supply device
Number is more than or equal to electric stove door oxygen rifle number.
10. a kind of use claim 1-9 described devices are blown the method for inert gas, the spraying of electric furnace blown inert gas device
Injection inert gas traffic intensity be engaged with the oxygen flow intensity of furnace door oxygen lance, when oxygen blast intensity be more than 3.0~
4.0Nm3During/tmin, side-blown inert gas strength control is in 0.02~0.04Nm3/t·min；When oxygen blast intensity is less than
3.0Nm3During/tmin, side-blown inert gas strength control is in 0.04~0.08Nm3/t·min。
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710495390.8A CN107299189B (en) | 2017-06-26 | 2017-06-26 | A kind of device and its application method of spraying of electric furnace blown inert gas |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710495390.8A CN107299189B (en) | 2017-06-26 | 2017-06-26 | A kind of device and its application method of spraying of electric furnace blown inert gas |
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| CN107299189B CN107299189B (en) | 2019-04-26 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60103109A (en) * | 1983-11-11 | 1985-06-07 | Toshin Seikou Kk | Method for operating electric furnace |
| US5999557A (en) * | 1998-06-19 | 1999-12-07 | The Broken Hill Proprietary Company | Steel making bath control |
| CN201421254Y (en) * | 2009-05-20 | 2010-03-10 | 通化钢铁股份有限公司第一炼钢厂 | Electric furnace bottom with gas blowing stirring function |
| CN102628094A (en) * | 2012-04-16 | 2012-08-08 | 朱荣 | Buried oxygen blowing and decarburization process for electric-arc furnace steelmaking and control method |
-
2017
- 2017-06-26 CN CN201710495390.8A patent/CN107299189B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60103109A (en) * | 1983-11-11 | 1985-06-07 | Toshin Seikou Kk | Method for operating electric furnace |
| US5999557A (en) * | 1998-06-19 | 1999-12-07 | The Broken Hill Proprietary Company | Steel making bath control |
| CN201421254Y (en) * | 2009-05-20 | 2010-03-10 | 通化钢铁股份有限公司第一炼钢厂 | Electric furnace bottom with gas blowing stirring function |
| CN102628094A (en) * | 2012-04-16 | 2012-08-08 | 朱荣 | Buried oxygen blowing and decarburization process for electric-arc furnace steelmaking and control method |
Non-Patent Citations (1)
| Title |
|---|
| 贾凝晰 等: "45t电弧炉埋入式氧枪水模拟研究", 《工业加热》 * |
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| CN107299189B (en) | 2019-04-26 |
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