CN106011351A - Generating device and method for hot air in front of blast furnace, iron smelting device and method and iron - Google Patents
Generating device and method for hot air in front of blast furnace, iron smelting device and method and iron Download PDFInfo
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- CN106011351A CN106011351A CN201610534831.6A CN201610534831A CN106011351A CN 106011351 A CN106011351 A CN 106011351A CN 201610534831 A CN201610534831 A CN 201610534831A CN 106011351 A CN106011351 A CN 106011351A
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- blast
- hot
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B9/00—Stoves for heating the blast in blast furnaces
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B5/00—Making pig-iron in the blast furnace
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Abstract
The invention discloses a generating device and method for hot air in front of a blast furnace, an iron smelting device and method and iron and belongs to the technical field of blast furnace iron smelting. The hot air generating device comprises a hot air system, an oxygen system, a hot air pipeline, a first oxygen pipeline and a mixing pipeline. The hot air generating method is achieved based on the hot air generating device. The smelting device comprises the hot air generating device, a main hot air pipe and the blast furnace. The smelting method is achieved based on the smelting device. The iron is smelted through the smelting method in the smelting device. By means of the hot air generating device and method and the iron smelting device and method, the oxidation rate of a defect position of the inner wall of a hot blast furnace shell can be reduced while the generation amount of nitrogen oxides in the hot blast furnace is reduced in the iron smelting process.
Description
Technical field
The present invention relates to technical field of blast furnace ironmaking, particularly relate to hot blast generating means and side before a kind of blast furnace
Method, the smelting device of ferrum and method and ferrum.
Background technology
Oxygen-enriched air blast is to be blended into industry oxygen in hot blast used by blast furnace, exceedes air and contains realizing hot blast oxygen content
The measure of oxygen amount.Owing in air blast, oxygen content increases, ton ferrum Air Quantity Required reduces accordingly.Keeping into stove air quantity
Under conditions of constant, being equivalent to add air quantity, and then yield increases, rate of driving is improved.Improving
During oxygen-enriched, needed for ton ferrum, combustion product volume reduces, and the heat that therefore air blast is brought into has reduced,
Blast furnace overall thermal income is reduced.Therefore oxygen-enriched air blast is many and high pathogenic wind-warm is used in combination.Along with skill equipped by blast furnace
The continuous progress of art, while blast furnace air temperature improves constantly, oxygen-enriched demand is also continuously increased by blast furnace.Cause
This, how optimizing current oxygen enriching process is pendulum problem in face of ironmaking worker.
During blast furnace maximizes, pathogenic wind-warm and oxygen-enriched improve constantly, in the hot blast work that current blast furnace is used
Under the conditions of skill, not only can promote the production of nitrogen oxides in air stove, rotten for hot-air stove shell generation intergranular stress
Erosion offer condition, also can improve the oxidizing reaction rate of hot-air stove shell defect in inner surface position, causes furnace shell to lose
Effect.
Summary of the invention
In view of this, hot blast generating means and method, the smelting device of ferrum and side before the present invention provides a kind of blast furnace
Method and ferrum, while its formation of nitrogen oxides in realizing air stove stove reduces, can realize slowing down air stove
The oxidation rate of furnace shell inner wall defect position, thus more suitable for practicality.
In order to reach above-mentioned first purpose, the technical scheme of hot blast generating means before the blast furnace that the present invention provides
As follows:
Before the blast furnace that the present invention provides hot blast generating means include hot-air system, oxygen system, hot-blast pipe line, the
One oxygen pipeline, mixed pipe line,
Described hot-air system is used for generating hot blast and being drawn by described hot-blast pipe line,
Described oxygen system is used for providing oxygen and being drawn by described first oxygen pipeline,
The hot blast drawn by described hot-blast pipe line mixes described with the oxygen drawn by described first oxygen pipeline
In pipeline after mixing, generate hot blast before described blast furnace.
Before the blast furnace that the present invention provides, hot blast generating means also can be applied to the following technical measures to achieve further.
As preferably, before described blast furnace, hot blast generating means also includes the first valve, the second valve,
Described first valve is arranged on described hot-blast pipe line,
Described second valve is arranged on described first oxygen pipeline.
As preferably, described hot-air system includes wind regime, air stove,
After described wind regime generates described hot blast after described air stove, enter described hot-blast pipe line.
As preferably, described oxygen system includes source of oxygen, the second oxygen pipeline, pressure-equalizing device,
After the oxygen that described source of oxygen provides sequentially passes through described second oxygen pipeline and described pressure-equalizing device, enter
Enter described first oxygen pipeline.
As preferably, before described blast furnace, hot blast generating means also includes that the 3rd valve, described 3rd valve are arranged on
On described second oxygen pipeline, or, described 3rd valve is arranged on described pressure-equalizing device.
As preferably, before described blast furnace, hot blast generating means also includes threeway mechanism,
The first of described threeway mechanism is logical to be connected with described first oxygen pipeline, and the second of described threeway mechanism is led to
Connecting with described hot-blast pipe line, the threeway of described threeway mechanism connects with described mixed pipe line.
In order to reach above-mentioned second purpose, before the blast furnace that the present invention provides, hot blast generates the technical scheme of method
As follows:
Hot blast generating means before hot blast generates the blast furnace that method provides based on the present invention before the blast furnace that the present invention provides
And realize, before described blast furnace, hot blast generation method comprises the following steps:
Obtain hot blast by described hot-air system and draw via described hot-blast pipe line；
Obtain oxygen by described oxygen system and draw via described first oxygen pipeline；
By the hot blast drawn by described hot-blast pipe line with the oxygen drawn by described first oxygen pipeline described mixed
Close mixing in pipeline, obtain hot blast before described blast furnace.
In order to reach above-mentioned 3rd purpose, the technical scheme of the smelting device of the ferrum that the present invention provides is as follows:
The present invention provides the smelting device of ferrum to include, and hot blast generating means before the blast furnace that the present invention provides, hot blast are total
Pipe, blast furnace,
One end of described hot-blast main connects with the mixed pipe line of hot blast generating means before described blast furnace, described heat
The other end of wind house steward connects with described blast furnace, by described hot-blast main, generates via hot blast before described blast furnace
The hot blast that device generates can be admitted to described blast furnace.
In order to reach above-mentioned 4th purpose, the technical scheme of the smelting process of the ferrum that the present invention provides is as follows:
The smelting device of the ferrum that the smelting process of ferrum that the present invention provides provides based on the present invention and realize, described
The smelting process of ferrum comprises the following steps:
By hot blast before hot blast generating means acquisition blast furnace before the blast furnace that the present invention provides；
Before described blast furnace, hot blast is admitted to described blast furnace via described hot-blast main；
In described blast furnace, complete to realize the smelting of ferrum.
In order to reach above-mentioned 5th purpose, the technical scheme of the ferrum that the present invention provides is as follows:
The ferrum that the present invention provides is in the smelting device of the ferrum of present invention offer, the ferrum that the application present invention provides
Smelting process smelt obtain.
Current oxygen-enriched mode mostly is from the current plate orifice plate of cold air duct and is prevented industrial oxygen by pipeline
Add between air-valve, enter into air stove together with cold wind, after heating, form high temperature, the heat of high oxygen enrichment percentage
After wind, enter back into blast furnace.The present invention provide blast furnace before hot blast generating means include hot-air system, oxygen system,
Hot-blast pipe line, the first oxygen pipeline, mixed pipe line, hot-air system is used for generating hot blast and being drawn by hot-blast pipe line,
Oxygen system is used for providing oxygen and being drawn by oxygen pipeline, hot-blast pipe line the hot blast drawn with by the first oxygen
After the oxygen that air pipe is drawn mixes in mixed pipe line, generate hot blast before blast furnace.Before the blast furnace that the present invention provides
Hot blast generates method and obtains hot blast by described hot-air system and draw via described hot-blast pipe line；By described
Oxygen system obtains oxygen and draws via described first oxygen pipeline；The heat will drawn by described hot-blast pipe line
Wind mixes, before obtaining described blast furnace with the oxygen drawn by described first oxygen pipeline in described mixed pipe line
Hot blast.This hot blast generating means and method, the smelting device of ferrum and method, during smelt iron, are realizing
While formation of nitrogen oxides in air stove stove reduces, can realize slowing down hot-air stove shell inner wall defect position
The oxidation rate put.
Accompanying drawing explanation
By reading the detailed description of hereafter preferred implementation, various other advantage and benefit for ability
Territory those of ordinary skill will be clear from understanding.Accompanying drawing is only used for illustrating the purpose of preferred implementation, and not
It is considered limitation of the present invention.And in whole accompanying drawing, it is denoted by the same reference numerals identical parts.
In the accompanying drawings:
The structural representation of hot blast generating means before the blast furnace that Fig. 1 provides for the present invention；
Before the blast furnace that Fig. 2 provides for the present invention, hot blast generates the flow chart of steps of method；
Material change schematic diagram during hot blast generates procedure before the blast furnace that Fig. 3 provides for the present invention；
The flow chart of steps of the smelting process of the ferrum that Fig. 4 provides for the present invention.
Detailed description of the invention
The present invention solves the problem that prior art exists, it is provided that hot blast generating means and method before a kind of blast furnace,
The smelting device of ferrum and method and ferrum, while its formation of nitrogen oxides in realizing air stove stove reduces,
Can realize slowing down the oxidation rate of hot-air stove shell inner wall defect position, thus more suitable for practicality.
By further illustrating the technological means and effect that the present invention taked by reaching predetermined goal of the invention, below
In conjunction with accompanying drawing and preferred embodiment, to the Gao Luqian hot blast generating means proposed according to the present invention and method, ferrum
Smelting device and method and ferrum, its detailed description of the invention, structure, feature and effect thereof, describe in detail as after.
In the following description, what different " embodiments " or " embodiment " referred to is not necessarily same embodiment.Additionally,
Special characteristic, structure or feature in one or more embodiment can be combined by any suitable form.
The terms "and/or", a kind of incidence relation describing affiliated partner, expression can exist
Three kinds of relations, such as, A and/or B, concrete is interpreted as: can include A and B, Ke Yidan simultaneously
Solely there is A, it is also possible to individualism B, it is possible to possess above-mentioned three kinds of any one situations.
Seeing accompanying drawing 1, before the blast furnace that the present invention provides, hot blast generating means includes hot-air system A, oxygen system
B, hot-blast pipe line the 3, first oxygen pipeline 10, mixed pipe line 5.Hot-air system A be used for generating hot blast and by
Hot-blast pipe line 3 is drawn, and oxygen system B is used for providing oxygen and being drawn, by hot blast by the first oxygen pipeline 10
After the hot blast that pipeline 3 is drawn mixes in mixed pipe line 5 with the oxygen drawn by the first oxygen pipeline 10, raw
Become hot blast before blast furnace.
Wherein, before blast furnace, hot blast generating means also includes first valve the 4, second valve 11.First valve 4 sets
Putting on hot-blast pipe line 3, the second valve 11 is arranged on the first oxygen pipeline 10.By to the first valve 4
Aperture be adjusted, it is possible to regulation hot-blast pipe line 3 in hot blast flow velocity；By opening the second valve 11
Degree is adjusted, it is possible to regulates the oxygen gas flow rate in the first oxygen pipeline 10, thus controls hot blast and exist with oxygen
Mixing ratio in mixed pipe line 5.In order to convenient, first valve the 4, second valve 11 is adjusted,
First valve 4 can be the first electronic valve, and the second valve 11 can be the second electronic valve, wherein, the
One electronic valve is provided with the first communication interface, and the second electronic valve is provided with the second communication interface, by first
Communication interface, the first electronic valve can communicate with controlling terminal, by the second communication interface, the second electricity
Sub-valve can communicate, now with controlling terminal, it is only necessary to by being controlled control terminal,
Realize the aperture of the first electronic valve, the second electronic valve is adjusted.In this way, it is possible to more
Conveniently realize and first valve the 4, second valve 11 is remotely controlled.Wherein, control terminal selected from PC,
One or several in industrial computer, handheld terminal.
Wherein, hot-air system A includes wind regime 1, air stove 2.Wind regime 1 generates hot blast after air stove 2
After, enter hot-blast pipe line 3.
Wherein, oxygen system B includes source of oxygen the 6, second oxygen pipeline 7, pressure-equalizing device 9.Source of oxygen 6
After the oxygen provided sequentially passes through the second oxygen pipeline 7 and pressure-equalizing device 9, enter the first oxygen pipeline 10.
Wherein, before blast furnace, hot blast generating means also includes that the 3rd valve 8, the 3rd valve 8 are arranged on the second oxygen
On pipeline 7, or, the 3rd valve 8 is arranged on pressure-equalizing device 9.By the aperture to the 3rd valve 8
It is adjusted, it is possible to realize the oxygen gas flow rate in the second oxygen pipeline 7 is controlled.3rd valve 8 can
To be the 3rd electronic valve, wherein, the 3rd electronic valve is provided with third communication interface, is connect by the third communication
Mouthful, the 3rd electronic valve can communicate, now with controlling terminal, it is only necessary to by carrying out control terminal
Control, can realize the aperture of the 3rd electronic valve is adjusted.In this way, it is possible to convenient
Ground realizes remotely controlling the 3rd valve 8.Wherein, terminal is controlled selected from PC, industrial computer, hand-held
One or several in terminal.Wherein, the 3rd valve 8 it is arranged on the second oxygen pipeline 7 or all presses
Effect on device 9 is identical.
Additionally, for program that first valve the 4, second valve the 11, the 3rd valve 8 is remotely controlled also
Can be an APP, it be easy for installation on PC, industrial computer, handheld terminal, simple to operate, it is easier to real
Existing.Now, for convenience, it is also possible to first valve the 4, second valve the 11, the 3rd valve 8 is associated
Control, it is achieved change and entirely change.
Wherein, before blast furnace, hot blast generating means also includes threeway mechanism.The first of threeway mechanism is led to and the first oxygen
Pipeline 10 connects, and the second of threeway mechanism is logical to be connected with hot-blast pipe line 3, the threeway of threeway mechanism with mix
Pipeline 5 connects.So that the structure of hot blast generating means is more succinct, tight before the blast furnace of present invention offer
Gather.
Seeing accompanying drawing 2 and accompanying drawing 3, before the blast furnace that the present invention provides, hot blast generates what method provided based on the present invention
Hot blast generating means before blast furnace and realize, before blast furnace hot blast generate method comprise the following steps:
Step S21: obtain hot blast by hot-air system A and draw via hot-blast pipe line 3；
Step S22: obtain oxygen by oxygen system B and draw via the first oxygen pipeline 10；
Step S23: the hot blast drawn by hot-blast pipe line 3 is existed with the oxygen drawn by the first oxygen pipeline 10
In mixed pipe line 5, mixing, obtains hot blast before blast furnace.
Seeing accompanying drawing 1, before the present invention provides the smelting device of ferrum to include the blast furnace that the present invention provides, hot blast generates dress
Put, hot-blast main 12, blast furnace (not shown).Before one end of hot-blast main 12 and blast furnace, hot blast generates
The mixed pipe line 5 of device connects, and the other end of hot-blast main 12 connects with blast furnace (not shown), logical
Crossing hot-blast main 12, the hot blast generated via hot blast generating means before blast furnace can be admitted to blast furnace (in figure not
Illustrate).
See accompanying drawing 4, the smelting device of the ferrum that the smelting process of the ferrum that the present invention provides provides based on the present invention and
Realizing, the smelting process of ferrum comprises the following steps:
Step S41: by hot blast before hot blast generating means acquisition blast furnace before the blast furnace that the present invention provides；
Step S42: before blast furnace, hot blast is admitted to blast furnace (not shown) via hot-blast main 12；
Step S43: complete to realize the smelting of ferrum in blast furnace (not shown).
The ferrum that the present invention provides is in the smelting device of the ferrum of present invention offer, the ferrum that the application present invention provides
Smelting process smelt obtain.
Current oxygen-enriched mode mostly is from the current plate orifice plate of cold air duct and is prevented industrial oxygen by pipeline
Add between air-valve, enter into air stove together with cold wind, after heating, form high temperature, the heat of high oxygen enrichment percentage
After wind, enter back into blast furnace.Before the blast furnace that the present invention provides, hot blast generating means includes hot-air system A, oxygen system
System B, hot-blast pipe line the 5, first oxygen pipeline 10, mixed pipe line 5, hot-air system A is used for generating hot blast also
Being drawn by hot-blast pipe line 5, oxygen system B is used for providing oxygen and being drawn, by hot blast by the first oxygen pipeline
After the hot blast that pipeline is drawn mixes in mixed pipe line 5 with the oxygen drawn by the first oxygen pipeline 10, generate
Hot blast before blast furnace.Before the blast furnace that the present invention provides, hot blast generates method and obtains hot blast warp by hot-air system A
Drawn by hot-blast pipe line 3；Obtain oxygen by oxygen system B and draw via the first oxygen pipeline 10；Will
The hot blast drawn by hot-blast pipe line 3 and the oxygen drawn by the first oxygen pipeline 10 are mixed in mixed pipe line 5
Close, obtain hot blast before blast furnace.This hot blast generating means and method, the smelting device of ferrum and method are in smelt iron
During, while the formation of nitrogen oxides in realizing air stove stove reduces, can realize slowing down air stove stove
The oxidation rate of shell inner wall defect position.
Although preferred embodiments of the present invention have been described, but those skilled in the art once know base
This creativeness concept, then can make other change and amendment to these embodiments.So, claims
It is intended to be construed to include preferred embodiment and fall into all changes and the amendment of the scope of the invention.
Obviously, those skilled in the art can carry out various change and modification without deviating from this to the present invention
Bright spirit and scope.So, if the present invention these amendment and modification belong to the claims in the present invention and
Within the scope of equivalent technologies, then the present invention is also intended to comprise these change and modification.
Claims (10)
1. hot blast generating means before a blast furnace, it is characterised in that include hot-air system, oxygen system, heat
Air pipe line, the first oxygen pipeline, mixed pipe line,
Described hot-air system is used for generating hot blast and being drawn by described hot-blast pipe line,
Described oxygen system is used for providing oxygen and being drawn by described first oxygen pipeline,
The hot blast drawn by described hot-blast pipe line mixes described with the oxygen drawn by described first oxygen pipeline
In pipeline after mixing, generate hot blast before described blast furnace.
Hot blast generating means before blast furnace the most according to claim 1, it is characterised in that also include first
Valve, the second valve,
Described first valve is arranged on described hot-blast pipe line,
Described second valve is arranged on described first oxygen pipeline.
Hot blast generating means before blast furnace the most according to claim 1, it is characterised in that described hot blast system
System includes wind regime, air stove,
After described wind regime generates described hot blast after described air stove, enter described hot-blast pipe line.
Hot blast generating means before blast furnace the most according to claim 1, it is characterised in that described oxygen system
System includes source of oxygen, the second oxygen pipeline, pressure-equalizing device,
After the oxygen that described source of oxygen provides sequentially passes through described second oxygen pipeline and described pressure-equalizing device, enter
Enter described first oxygen pipeline.
Hot blast generating means before blast furnace the most according to claim 4, it is characterised in that also include the 3rd
Valve, described 3rd valve is arranged on described second oxygen pipeline, or, described 3rd valve is arranged on institute
State on pressure-equalizing device.
Hot blast generating means before blast furnace the most according to claim 1, it is characterised in that also include threeway
Mechanism,
The first of described threeway mechanism is logical to be connected with described first oxygen pipeline, and the second of described threeway mechanism is led to
Connecting with described hot-blast pipe line, the threeway of described threeway mechanism connects with described mixed pipe line.
7. before a blast furnace hot blast generate method, it is characterised in that before described blast furnace hot blast generate method based on
In claim 1～6 before arbitrary described blast furnace hot blast generating means and realize, before described blast furnace, hot blast generates
Method comprises the following steps:
Obtain hot blast by described hot-air system and draw via described hot-blast pipe line；
Obtain oxygen by described oxygen system and draw via described first oxygen pipeline；
By the hot blast drawn by described hot-blast pipe line with the oxygen drawn by described first oxygen pipeline described mixed
Close mixing in pipeline, obtain hot blast before described blast furnace.
8. the smelting device of a ferrum, it is characterised in that include arbitrary described blast furnace in claim 1～6
Front hot blast generating means, hot-blast main, blast furnace,
One end of described hot-blast main connects with the mixed pipe line of hot blast generating means before described blast furnace, described heat
The other end of wind house steward connects with described blast furnace, by described hot-blast main, generates via hot blast before described blast furnace
The hot blast that device generates can be admitted to described blast furnace.
9. the smelting process of a ferrum, it is characterised in that the smelting process of described ferrum is based on claim 8 institute
The smelting device of the ferrum stated and realize, the smelting process of described ferrum comprises the following steps:
By hot blast before hot blast generating means obtains blast furnace before described blast furnace arbitrary in claim 1～6；
Before described blast furnace, hot blast is admitted to described blast furnace via described hot-blast main；
In described blast furnace, complete to realize the smelting of ferrum.
10. a ferrum, it is characterised in that described ferrum is in the smelting device of the ferrum described in claim 8,
The smelting process of application ferrum described in claim 9 is smelted and is obtained.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610534831.6A CN106011351A (en) | 2016-07-07 | 2016-07-07 | Generating device and method for hot air in front of blast furnace, iron smelting device and method and iron |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610534831.6A CN106011351A (en) | 2016-07-07 | 2016-07-07 | Generating device and method for hot air in front of blast furnace, iron smelting device and method and iron |
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| Publication Number | Publication Date |
|---|---|
| CN106011351A true CN106011351A (en) | 2016-10-12 |
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ID=57108387
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610534831.6A Pending CN106011351A (en) | 2016-07-07 | 2016-07-07 | Generating device and method for hot air in front of blast furnace, iron smelting device and method and iron |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10245612A (en) * | 1997-03-07 | 1998-09-14 | Sumitomo Metal Ind Ltd | Blasting equipment for blast furnace |
| JP2001131616A (en) * | 1999-11-11 | 2001-05-15 | Nkk Corp | Method of operating blast and method of operating sintering furnace |
| EP2719779A1 (en) * | 2012-10-12 | 2014-04-16 | L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude | Blast-furnace process with recycle of a CO-fraction of the blast furnace gas and production plant for same |
| EP2719778A1 (en) * | 2012-10-12 | 2014-04-16 | L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude | Blast-furnace process with CO2-lean blast furnace gas recycle and production plant for same |
| EP2719777A1 (en) * | 2012-10-12 | 2014-04-16 | L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude | Blast-furnace process with coke-oven gas injection and production plant for same |
| EP2719776A1 (en) * | 2012-10-12 | 2014-04-16 | L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude | Blast furnace process using hot oxygen and plant for same |
| CN103740873A (en) * | 2014-01-27 | 2014-04-23 | 中冶东方工程技术有限公司 | Blast furnace ironmaking system |
-
2016
- 2016-07-07 CN CN201610534831.6A patent/CN106011351A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10245612A (en) * | 1997-03-07 | 1998-09-14 | Sumitomo Metal Ind Ltd | Blasting equipment for blast furnace |
| JP2001131616A (en) * | 1999-11-11 | 2001-05-15 | Nkk Corp | Method of operating blast and method of operating sintering furnace |
| EP2719779A1 (en) * | 2012-10-12 | 2014-04-16 | L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude | Blast-furnace process with recycle of a CO-fraction of the blast furnace gas and production plant for same |
| EP2719778A1 (en) * | 2012-10-12 | 2014-04-16 | L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude | Blast-furnace process with CO2-lean blast furnace gas recycle and production plant for same |
| EP2719777A1 (en) * | 2012-10-12 | 2014-04-16 | L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude | Blast-furnace process with coke-oven gas injection and production plant for same |
| EP2719776A1 (en) * | 2012-10-12 | 2014-04-16 | L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude | Blast furnace process using hot oxygen and plant for same |
| CN103740873A (en) * | 2014-01-27 | 2014-04-23 | 中冶东方工程技术有限公司 | Blast furnace ironmaking system |
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Address after: 100041 Shijingshan Road, Beijing, No. 68, No. Applicant after: Shougang Group Co. Ltd. Address before: 100041 Shijingshan Road, Beijing, No. 68, No. Applicant before: Capital Iron & Steel General Company |
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| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20161012 |