CN107299189B - A kind of device and its application method of spraying of electric furnace blown inert gas - Google Patents
A kind of device and its application method of spraying of electric furnace blown inert gas Download PDFInfo
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- CN107299189B CN107299189B CN201710495390.8A CN201710495390A CN107299189B CN 107299189 B CN107299189 B CN 107299189B CN 201710495390 A CN201710495390 A CN 201710495390A CN 107299189 B CN107299189 B CN 107299189B
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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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- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
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- 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, building inside the electric furnace has backup lining brick, and the device of the blowing inert gas includes N number of air supply device, N >=1；N number of air supply device is respectively embedded into being mounted in N number of backup lining brick of formula, and fits closely with the backup lining brick；One end of N number of air supply device is communicated with inside the electric furnace, is blown inert gas for the electric furnace side, the other end of N number of air supply device is connected with external feeder.Meanwhile the invention also discloses a kind of application methods of spraying of electric furnace blown inert gas device.The invention has the benefit that device traffic channel is more, there is assignable gas flow regulatory function, gas flow is controllable, and flow adjustment range is big, is suitble to the control and adjusting of electric furnace gas flow；The blowing direction of spraying of electric furnace blown inert gas device of the present invention be it is horizontal, downward or upward, intersect 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 the devices and its use of electric furnace steelmaking technology field more particularly to a kind of spraying of electric furnace blown inert gas
Method.
Background technique
It generallys use furnace door oxygen lance in electric furnace smelting molten bath is supplied oxygen and stirred, with adding for a large amount of slag materials
Enter, the liveness in molten bath during being only not sufficient to ensure that blowing by the stirring capacity of furnace door oxygen lance.
Number of patent application is CN200910010485.1, entitled bottom blowing orienting stephanoporate air brick body for electric furnace and
The problem of its manufacturing method discloses the method for electric furnace bottom blowing, is able to solve electric furnace melting bath stirring scarce capacity, but it is upper in application
Existing more problems, are mainly manifested in:
(1) thus there is electric furnace eccentric-bottom, tapping rear portion steel slag stays in electric furnace, and bottom blowing element is easy blocking, extensive
Multiple processing is difficult, and the service life 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, affect the normal production of electric furnace.
Above problem 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, the blowing inert gas of long-life are very important.
Summary of the invention
In view of above-mentioned analysis, the present invention is intended to provide a kind of device and its application method of spraying of electric furnace blown inert gas,
To solve the problems, such as that the easy blocking of bottom blowing element in the prior art, traffic channel is single, gas flow is uncontrollable.
The purpose of the present invention is mainly achieved through the following technical solutions:
A kind of device of spraying of electric furnace blown inert gas, the electric furnace inside, which is built, backup lining brick, the blowing inert gas
Device include N number of air supply device, N >=1；N number of air supply device is respectively embedded into being mounted in N number of backup lining brick of formula, and with
The backup lining brick fits closely；One end of N number of air supply device is communicated with inside the electric furnace, is sprayed for the electric furnace side
The other end of blown inert gas, N number of air supply device is connected with external 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 blowing inert gas of the blowing inert gas and electric furnace molten bath plane
Angular range is -30 °~+30 °.
The present invention is set as -30 °~+30 ° for angle is blown, and so controlling angle is to guarantee that gas is blown in different directions
Enter molten bath, to guarantee the effect of blowing；It can guarantee that the gas of blowing is stirred molten bath by different angles simultaneously, remove
The efficiency of Gas Stirring is improved at the dead angle of stirring.
Further, EAF bottom minimum point described in the air supply device blowing positional distance is 0.3~1.0m.
The present invention by the setting of the blowing position of air supply device apart from EAF bottom 0.3~1.0m of minimum point, can be to molten
Pond is stirred, and realizes that whole process for inert gas, while preventing from being blown into gas and entering molten bath, and is small to the impact of furnace lining.
Further, the air supply device includes gas chamber, air inlet pipe and air supply pipe, the air inlet pipe and the gas chamber phase
Even, the gas chamber is connected with the air supply pipe, and inert gas passes sequentially through the air inlet pipe, gas chamber and air supply pipe and enters electric furnace
It is interior.
Air supply unit of the present invention uses air inlet pipe, gas chamber and air supply pipe, can guarantee that gas supply is more steady, be not easy to leak outside.
Further, the air supply device is casing or convergent-divergent channel.
The present invention selects Bearing score pipe that can guarantee 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 reinforce 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。
The present invention selects range of flow to have certain stirring power for the flow that can guarantee gas supply of 0~100NL/min
Power, and then improve mixing effect.
Further, the position of the blowing inert gas installation and the position of furnace door oxygen lance intersect.
Blowing device of the present invention intersects with fire door can ensure to stir to promote the mixing effect in molten bath not a position.
Further, the number of the air supply device is 1~10.
Air supply device of the present invention, which selects 1~10, can be improved 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 the mixing effect in order to improve 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 method of inert gas being blown using described device, the spraying of electric furnace blown inert gas device is blown indifferent gas
The traffic intensity of body is matched with the oxygen flow intensity of furnace door oxygen lance, when oxygen blast intensity is greater 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 3.0Nm3When/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 blowing inert gas and furnace door oxygen lance in the present invention
Amount intensity is that the display of the flowmeter by oxygen flow in operating room, inert gas flow is determined.
Application method of the present invention can guarantee the stirring capacity that molten bath is remained in electric furnace converting process, avoid only using furnace
The dead angle of the melting bath stirring of door oxygen rifle, promotes the balance of carbon, oxygen, phosphorus in molten steel, realizes that reducing electric furnace smelting raw material and alloy disappears
The purpose of consumption.
The present invention has the beneficial effect that:
(1) compared with converter (or AOD) side-blown mode, blowing inert gas installation of the invention is more suitable for efficiency electric furnace
Smelting process；Since the shaft height of electric furnace is lower than converter, pool depth is more shallow than converter, and electric furnace shaft is inserted into 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
Want difficulty more；
(2) compared with the side-blown element design method of converter (or AOD), blowing 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, has assignable gas flow regulatory function,
Gas flow is controllable, and flow adjustment range is big, is suitble to the control and adjusting of electric furnace gas flow；
(3) the Gas injection direction of spraying of electric furnace blown inert gas device of the present invention is horizontal, downward or upward, with fire door
The oxygen flow of oxygen rifle intersects, and compensates 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
It is become apparent in specification, or understand through the implementation of the invention.The objectives and other advantages of the invention can by
Specifically noted structure is achieved and obtained in written specification, claims and attached drawing.
Detailed description of the invention
Attached drawing is only used for showing the purpose of specific embodiment, and is not to be construed as limiting the invention, in entire attached drawing
In, identical reference symbol indicates identical component.
Fig. 1 is the device arrangement main view of the spraying of electric furnace blown inert gas of 1 horizontal of the embodiment of the present invention；
Fig. 2 is the arrangement top view of the device of the spraying of electric furnace blown inert gas of 1 horizontal of the embodiment of the present invention；
Fig. 3 is the feeder schematic diagram that 1 backup lining brick of the embodiment of the present invention is embedded in 3 steel pipes with gas chamber；
Fig. 4 is the arrangement main view of the device of the spraying of electric furnace blown inert gas of 2 horizontal of the embodiment of the present invention；
Fig. 5 is the arrangement top view of the device of the spraying of electric furnace blown inert gas of 2 horizontal of the embodiment of the present invention；
Fig. 6 is the feeder schematic diagram that 2 backup lining brick of the embodiment of the present invention is embedded in 3 steel pipes without gas chamber；
Fig. 7 is the arrangement main view of the device of the spraying of electric furnace blown inert gas of 3 horizontal of the embodiment of the present invention；
Fig. 8 is the arrangement top view of the device of the spraying of electric furnace blown inert gas of 3 horizontal of the embodiment of the present invention；
3 backup lining brick of Fig. 9 embodiment of the present invention is embedded in the air supply device schematic diagram of Bearing score form of tubes.
In figure, 1- furnace lining, 2- backup lining brick, 3- air supply device, 4- air inlet pipe, 5- gas chamber, 6- escape pipe, the spray of the Lavalle 7-
Mouth, 8- jet pipe.
Specific embodiment
Specifically describing the preferred embodiment of the present invention with reference to the accompanying drawing, wherein attached drawing constitutes the application a part, and
Together with embodiments of the present invention for illustrating the principle of the present invention.
The device of three kinds of blowing inert gases is devised, in 50t electric furnace to obtain better electric furnace mixing effect.This hair
The device of bright blowing inert gas is mounted on furnace lining, and the device for being blown inert gas includes backup lining brick and air supply device, gas 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 is connected to the metal hose of ventilation on ring flange, is provided gas source for air supply device.Equipped with gas supply
The backup lining brick of element with the size of backup lining brick normally built be it is the same, the masonry of furnace lining is fan-shaped masonry, and it is long to build brick
600mm, major part portion size 100mm × 120mm, microcephaly part 100mm × 120mm.
The implementation method having is as follows:
Embodiment 1
The present embodiment is directed to 50t electric furnace, and the arrangement of the device of the blowing inert gas of use is as shown in Figure 1, 2, benefit
Passed through with inert gas and be arranged in the side-blown air supply device away from furnace bottom minimum point 0.5m, intersected with the position of furnace door oxygen lance,
Blowing direction is level, and the angle with molten bath plane is 0 °；The present embodiment is blown the device of inert gas by 4 backup lining bricks and 4
A air supply device composition, air supply device are embedded into backup lining brick, and air supply device is built in a manner of with bath level in electric furnace
On lining, each air supply device is made of air inlet pipe, gas chamber and escape pipe, wherein air inlet pipe 1, and escape pipe 3, air inlet pipe
It is connect with gas chamber, gas chamber is connect 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
It is arranged in the surrounding of electrode, every side 2.
Each air supply device is made of air inlet pipe, gas chamber and escape pipe, is specifically shown in Fig. 3, wherein air inlet pipe 1, outlet
Pipe 3, air inlet pipe is connect with gas chamber, and gas chamber is connect with escape pipe, and the diameter of air inlet pipe is 2mm, and outlet pipe diameter is 1mm, gas
The size of room is 20mm × 20mm × 40mm, and the volume of gas chamber is 16cm3.Specific connection type is an air inlet pipe and gas chamber
Connection, escape pipe separate three, enter in electric furnace.
The application method for being blown inert gas installation is stirred using nitrogen, argon gas as bottom blowing during electric furnace smelting
Gas source is mixed, air blowing flow is as shown in table 1.
The blowing process of inert gas and blowing oxygen flow have matching relationship in the present embodiment, when oxygen blast intensity is greater than
3.0-4.0Nm3When/tmin, side-blown inert gas strength control is in 0.02-0.04Nm3/t·min；When oxygen blast intensity is less than
3.0Nm3When/tmin, side-blown inert gas strength control is in 0.04-0.08Nm3/t·min。
Side-blown control model/the NL/min of 1 electric furnace of table
| Operation stage | One phase | Second phase | Three phases | Refining period | Tapping |
| 1-3 furnace | 40 | 40 | 40 | 40 | 40 |
| 4-10 furnace | 120 | 120 | 120 | 120 | 120 |
| 10-50 furnace | 160 | 160 | 160 | 160 | 160 |
| > 50 furnaces | 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 source | 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 furnace, arrangement such as Fig. 4 in electric furnace of device of the blowing 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 is 10 ° that blowing direction, which is with the angle α of molten bath plane, inert gas dress
Set and be made 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 at 10 degree
Mode build on electric furnace lining, each air supply device is made 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
It is evenly arranged in the surrounding of electrode, every side 3.
Backup lining brick is embedded in the air supply device of 3 steel pipes without gas 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 diameter of the present embodiment air supply device is
2mm, inner layer steel pipe diameter are 1mm, and the length of steel pipe is 650mm.
The application method for being blown inert gas installation is stirred using nitrogen, argon gas as bottom blowing during electric furnace smelting
Gas source is mixed, air blowing flow is as shown in table 2.
Side-blown control model/the NL/min of 2 electric furnace of table
| Operation stage | One phase | Second phase | Three phases | Refining period | Tapping |
| 1-3 furnace | 60 | 60 | 60 | 60 | 60 |
| 4-10 furnace | 180 | 180 | 180 | 180 | 180 |
| 10-50 furnace | 240 | 240 | 240 | 240 | 240 |
| > 50 furnaces | 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 source | Timing | Timing | Timing | Timing | Furnace wall gun stops oxygen |
The blowing process of inert gas and blowing oxygen flow have matching relationship in the present embodiment, when oxygen blast intensity is greater than
3.0-4.0Nm3When/tmin, side-blown inert gas strength control is in 0.02-0.04Nm3/t·min；When oxygen blast intensity is less than
3.0Nm3When/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 furnace, and the arrangement of the device of the blowing inert gas of use is as shown in Figure 7,8, benefit
Passed through with inert gas and be arranged in the side-blown air supply device away from furnace bottom minimum point 0.5m, intersected with the position of furnace door oxygen lance,
Blowing direction and the angle of molten bath plane are -10 °, and inert gas installation is made of 8 backup lining bricks and 8 air supply devices, gas supply
Element is embedded into backup lining brick, and air supply device is built on electric furnace lining in a manner of spending with molten bath at -10, each gas 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, every 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
A air supply device is all Bearing score form of tubes, and length 650mm, contraction segment length is 8mm, throat diameter 3mm, outlet diameter
For 8mm, expansion ratio length is 20mm.
The application method for being blown inert gas installation is stirred using nitrogen, argon gas as bottom blowing during electric furnace smelting
Gas source is mixed, air blowing flow is as shown in table 3.
Side-blown control model/the NL/min of 3 electric furnace of table
| Operation stage | One phase | Second phase | Three phases | Refining period | Tapping |
| 1-3 furnace | 80 | 80 | 80 | 80 | 80 |
| 4-10 furnace | 240 | 240 | 240 | 240 | 240 |
| 10-50 furnace | 320 | 320 | 320 | 320 | 320 |
| > 50 furnaces | 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 source | Timing | Timing | Timing | Timing | Furnace wall gun stops oxygen |
The blowing process of inert gas and blowing oxygen flow have matching relationship in the present embodiment, when oxygen blast intensity is greater than
3.0-4.0Nm3When/tmin, side-blown inert gas strength control is in 0.02-0.04Nm3/t·min；When oxygen blast intensity is less than
3.0Nm3When/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 conclusion the present invention provides the device and its application method of a kind of spraying of electric furnace blown inert gas, present invention dress
It is more to set traffic channel, there is assignable gas flow regulatory function, gas flow is controllable, and flow adjustment range is big, is suitble to electricity
The control and adjusting of furnace gases flow；Meanwhile the Gas injection direction of spraying of electric furnace blown inert gas device be it is horizontal, downwards or to
On, intersect with the oxygen flow of furnace door oxygen lance, compensates for the deficiency of furnace door oxygen lance agitation molten pool.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
In the technical scope disclosed by the present invention, any changes or substitutions that can be easily thought of by anyone skilled in the art,
It should be covered by the protection scope of the present invention.
Claims (9)
1. a kind of device of spraying of electric furnace blown inert gas, which is characterized in that building inside the electric furnace has backup lining brick, the blowing
The device of inert gas includes N number of air supply device, N >=1；What N number of air supply device was respectively embedded into formula is mounted on N number of backup lining brick
It is interior, and fitted closely 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 external feeder；
The air supply device includes gas chamber, air inlet pipe and air supply pipe, and the air inlet pipe is connected with the gas chamber, the gas chamber and institute
It states air supply pipe to be connected, inert gas passes sequentially through the air inlet pipe, gas chamber and air supply pipe and enters in electric furnace.
2. a kind of device of spraying of electric furnace blown inert gas according to claim 1, which is characterized in that the blowing indifferent gas
The direction of device blowing inert gas of body and the angular range of electric furnace molten bath plane are -30 °~+30 °.
3. a kind of device of spraying of electric furnace blown inert gas according to claim 1 or 2, which is characterized in that the gas supply member
It is 0.3~1.0m that part, which is blown EAF bottom minimum point described in positional distance,.
4. a kind of device of spraying of electric furnace blown inert gas according to claim 3, which is characterized in that the air supply device is
Casing or convergent-divergent channel；The range of Mach numbers of the air supply device is 1~2.5.
5. a kind of device of spraying of electric furnace blown inert gas according to claim 4, which is characterized in that the inert gas packet
Nitrogen and argon gas are included, the range of flow of every air supply device is 0~100NL/min.
6. a kind of device of spraying of electric furnace blown inert gas according to claim 5, which is characterized in that the blowing indifferent gas
The position of body device intersects with the position of furnace door oxygen lance.
7. a kind of device of spraying of electric furnace blown inert gas according to claim 6, which is characterized in that the air supply device
Number is 1~10.
8. a kind of device of spraying of electric furnace blown inert gas according to claim 7, which is characterized in that the air supply device
Number is more than or equal to electric stove door oxygen rifle number.
9. a kind of method using any one of claim 1-8 described device blowing inert gas, by the blowing inert gas
Device be mounted on furnace lining, the device for being blown inert gas includes backup lining brick and air supply device, and air supply device is embedded into furnace lining
In brick, air supply device has entrance and exit, exports in electric furnace, entrance is connected on ring flange, and ring flange is welded on furnace shell
On, wherein it is connected to the metal hose of ventilation on ring flange, provides gas source for air supply device；
EAF bottom minimum point described in the air supply device blowing positional distance is 0.3~1.0m；
The position of the blowing inert gas installation and the position of furnace door oxygen lance intersect；
The oxygen flow intensity phase of the traffic intensity and furnace door oxygen lance of the spraying of electric furnace blown inert gas device blowing inert gas
Cooperation, when oxygen blast intensity is greater than 3.0~4.0Nm3When/tmin, side-blown inert gas strength control is in 0.02~0.04Nm3/
t·min；When oxygen blast intensity is less than 3.0Nm3When/tmin, side-blown inert gas strength control is in 0.04~0.08Nm3/t·
min。
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| 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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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 |
|---|
| 45t电弧炉埋入式氧枪水模拟研究;贾凝晰 等;《工业加热》;20160831;第45卷(第4期);第44-45页 |
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