CN108541273A - Molten iron preparation facilities and utilize its molten iron preparation method - Google Patents
Molten iron preparation facilities and utilize its molten iron preparation method Download PDFInfo
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- CN108541273A CN108541273A CN201680074988.3A CN201680074988A CN108541273A CN 108541273 A CN108541273 A CN 108541273A CN 201680074988 A CN201680074988 A CN 201680074988A CN 108541273 A CN108541273 A CN 108541273A
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- molten iron
- reduction furnace
- bed reduction
- fluidized bed
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B13/00—Making spongy iron or liquid steel, by direct processes
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B13/00—Making spongy iron or liquid steel, by direct processes
- C21B13/02—Making spongy iron or liquid steel, by direct processes in shaft furnaces
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- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacture Of Iron (AREA)
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Abstract
Molten iron preparation facilities according to an embodiment of the invention, including：Fluidized bed reduction furnace, the fluidized bed reduction furnace provide reduced iron；Melting gasification furnace is packed into the reduced iron in the melting gasification furnace and is internally blown into oxygen to prepare molten iron；And plasma torch, the plasma torch are blown into plasma gas to the fluid bed reduction furnace interior.
Description
Technical field
The present invention relates to a kind of molten iron preparation facilities and utilize its molten iron preparation method.More particularly it relates to
A kind of molten iron preparation facilities of FINEX techniques and its molten iron preparation method is utilized, reduced powder iron will be used in FINEX techniques
The inside of the fluidized bed reduction furnace of mine is maintained at the temperature of suitable powder iron ore reduction.
Background technology
In general, the steel used in most of modern industries such as automobile, shipbuilding, household electrical appliances, building is according to iron-smelting process, refining
It is prepared by the sequence of steel technique, continuous casting process and rolling mill practice.In addition, preparing molten iron using blast furnace process in iron-smelting process.
Blast furnace process is will to be blown into oxygen by the iron ore of sintering process and after using bituminous coal being packed into blast furnace as coking coal made of raw material and prepare
The method of molten iron.
However, according to the blast furnace process, need that the coking equipment for bituminous coal to be made to coking coal, the burning for iron ore is arranged
The optional equipments such as the agglomerating plant of knot process.Further, since environmental contaminants are discharged from the optional equipment, according to blast furnace process,
Other than the optional equipment, need that the cleaning equipment for environment purification pollutant is arranged together.It is described attached for being arranged
Extra cost caused by oil (gas) filling device and cleaning equipment is reflected directly in steel manufacturing cost, will appear according to the blast furnace process
The problem of steel manufacturing cost rises.Therefore, use smelting reduction process instead of blast furnace process in steel industry at present.The melting is also
Former method is also referred to as FINEX methods.
Using the lump iron ores by the caked iron ore of sintering process (lump iron ores) or nature in blast furnace process, and
The iron ore (powder iron ore) of powdery is used in FINEX techniques.In addition, using the coking coal being process by bituminous coal in blast furnace process, but
Common coal is directly used in FINEX techniques.Such FINEX methods do not need coking equipment, the agglomerating plant of iron ore, cleaning equipment
Deng, and price is used to be less than the common coal of bituminous coal less than the powder iron ore and price of lump iron ores, therefore steel system can be reduced
Standby cost.In addition, FINEX methods are very environmentally friendly compared with blast furnace process.
Using the fluidized bed reduction furnace for restoring powder iron ore and by powder iron ore after reduction and common in FINEX techniques
Coal is melted to prepare the melting gasification furnace of molten iron.It, can to the supply of the inside of fluidized bed reduction furnace for the reduction of powder iron ore
Fire gas and oxygen.Fuel gas is passed through the distribution grid of fluidized bed reduction furnace lower end, and with uniform traffic flow influent stream
Powder iron ore is set to flow after changing the inside of bed reduction furnace.
After oxygen flows into fluid bed reduction furnace interior by the fluidized bed combustor on fluidized bed reduction furnace side
It is reacted with the fuel gas, the internal temperature of fluidized bed reduction furnace is made to be suitable for the reduction of powder iron ore.However, so using
When oxygen makes the gas fuel burning of fluid bed reduction furnace interior, carbon dioxide and vapor will be formed.As shown in Figure 1, working as
When carbon dioxide and vapor ratio are got higher in fuel gas, it can die down to the reducing power of powder iron ore.
In order to solve described problem, increase the usage amount for the common coal for playing the role of reducing agent, but FINEX can be reduced in this way
The operating efficiency of technique, and required production cost is excessive.
Invention content
Technical problem
The technical problem to be solved in the present invention is to provide a kind of molten iron preparation facilities of FINEX techniques and utilize its molten iron
Preparation method, with into fluidized bed reduction furnace fluid bed heat supply without losing reducing gas.
Technical solution
Molten iron preparation facilities according to an embodiment of the invention includes：Fluidized bed reduction furnace, the fluid bed reduction
Stove provides reduced iron；Melting gasification furnace, is packed into the reduced iron in the melting gasification furnace, and to the fusion and gasification furnace interior
It is blown into oxygen, to prepare molten iron；And plasma torch, the plasma torch are blown into the fluid bed reduction furnace interior
Ionized gas.
The plasma torch can utilize the plasma gas to form flame, to be supplied to the fluid bed reduction furnace interior
Heat.
The plasma gas can be any one of hydrogen, nitrogen, helium, argon gas gas.
The mean temperature of the fluid bed of the fluid bed reduction furnace interior can be 500 DEG C to 1000 DEG C.
The molten iron preparation facilities may also include：It is described to be arranged in the fluidized bed reduction furnace for electric installation for electric installation
Outside and connect with the plasma torch.
The energy that 1MWh to 100MWh can be supplied to the plasma torch for electric installation.
The fluidized bed reduction furnace include reducing gas by distribution grid, the plasma torch can be located at the distribution
The top of plate and the outer wall for being located at the fluidized bed reduction furnace.
The plasma torch can be arranged multiple along the outer wall of the fluidized bed reduction furnace.
The molten iron preparation facilities may also include：Reducing gas supply pipe, the reducing gas supply pipe will be melted from described
The reducing gas for melting gasification furnace discharge is supplied to the fluidized bed reduction furnace.
Invention effect
It in one embodiment of the invention, can by the way that the plasma torch to fluid bed reduction furnace interior heat supply is arranged
So that the fluid bed heating in fluidized bed reduction furnace.
In addition, by by plasma torch setting in position, distribution grid can be prevented impaired.
Further, since making fluid bed heat up with plasma gas, reducing gas will not be consumed, going back for powder iron ore can be improved
Former rate, and then improve the operating efficiency of FINEX techniques.
Description of the drawings
Fig. 1 is CO, CO2、H2、H2O、Fe、FeO、Fe3O4、Fe2O3Phase equilibrium diagram.
Fig. 2 is the schematic diagram of molten iron preparation facilities structure according to an embodiment of the invention.
Fig. 3 is the schematic diagram of fluidized bed reduction furnace according to an embodiment of the invention.
Fig. 4 is the schematic top plan view of fluidized bed reduction furnace according to an embodiment of the invention.
Fig. 5 is the flow chart of molten iron preparation method according to an embodiment of the invention.
Specific implementation mode
First, second, third, etc. term herein is for describing various parts, ingredient, region, layer and/or section, but these
Partly, ingredient, region, layer and/or section should not be limited by these terms.These terms are only used to distinguish certain part, ingredient,
Region, layer and/or section and another part, ingredient, region, layer and/or section.Therefore, without departing from the scope of the present invention, below
First part, ingredient, region, layer and/or the section of description can also be described as second part, ingredient, region, layer and/or section.
Term as used herein is only not intended to the limitation present invention for description specific embodiment.Unless in context
Another to provide apparent opposite meaning, otherwise singulative used herein is also intended to including plural form.It should also be appreciated that
It is that term " include " or " contain " can refer specifically to a certain characteristic, field, integer, step, action, element and/or ingredient, but
It is the presence or additional that other characteristics, field, integer, step, action, element, ingredient and/or group is not precluded.
Although without separately defining, the meaning of all terms (including technical terms and scientific terms) used herein with
Those skilled in the art is normally understood equivalent in meaning.For the term being defined inside dictionary, it should be interpreted have
Have the meaning consistent with relevant technical literature and content disclosed herein, without should with idealization or too formal meaning
To explain their meaning.
In the following, embodiments of the present invention will be described in detail with reference to the accompanying drawings, so that those skilled in the art is easy to implement this
Invention.The present invention can be implemented in a variety of different ways, it is not limited to following embodiments.
Fig. 2 is the schematic diagram of molten iron preparation facilities according to an embodiment of the invention.The molten iron preparation facilities of Fig. 2 is only
It is illustrative for the present invention, the invention is not limited thereto.Therefore, various modifications can be made to molten iron preparation facilities.
Molten iron preparation facilities 100 according to an embodiment of the invention generally comprises fluidized bed reduction furnace 20 and melting gas
Change stove 10.In addition to this, molten iron preparation facilities 100 may include other different devices as needed.
Fluidized bed reduction furnace 20 is restored and is burnt into iron ore and auxiliary material, to be converted into reduced iron.It is packed into fluidisation
Reduced iron is made by fluidized bed reduction furnace 20 after predrying in the iron ore of bed reduction furnace 20.It is packed into fluidized bed reduction furnace 20
Iron ore and auxiliary material form fluid bed 1 inside fluidized bed reduction furnace 20.Fluidized bed reduction furnace 20 is restored as packed bed type
Stove receives reducing gas from melting gasification furnace 10, is formed in the interior thereof packed bed.
Melting gasification furnace 10 its it is internal include coal packed bed, reduced iron is packed into and to oxygen is blown into inside it, to prepare iron
Water.After the reducing gas being discharged from melting gasification furnace 10 is supplied to fluidized bed reduction furnace 20 by reducing gas supply pipe 40, warp
Fluidized bed reduction furnace 20 is then discharged to outside for iron ore and auxiliary material to be restored and be burnt into.
Below to forming each component of molten iron preparation facilities 100 according to an embodiment of the invention further specifically
It is bright.
Granularity is that 8mm room temperature powdery iron-containing mines below and auxiliary material are temporarily stored within material by molten iron preparation facilities 100
Bucket, then removes moisture removal and is mixed in drying machine, contains iron mixture to be made.Then, prepared iron content is mixed
It closes object and is packed into fluidized bed reduction furnace 20.Molten iron preparation facilities 100 has equal row pressure between drying machine and fluidized bed reduction furnace 20
Device, so that room temperature can be packed into the fluidized bed reduction furnace 20 for keeping the air pressure of 1.5 air pressures~3 containing iron mixture under normal pressure state
In.
It is supplied to the powdery iron-containing mine and auxiliary material and high-temperature reducing gas air flow contacts of fluidized bed reduction furnace 20, to
Bubble fluid bed is formed, and is converted into being warming up to 80 DEG C or more, 80% restores and 30% or more the high temperature reduction iron that is burnt into.
In addition, though being not shown in Fig. 2, but it may also include hot-press device, with prevent will be from fluidized bed reduction furnace
The reduced iron of 20 discharges is directly loadable into the loss of dispersing that will produce when melting gasification furnace 10.
Moulded coal obtained from lump coal or coal powder formation is supplied to melting gasification furnace 10, to form coal packed bed.It is packed into melting
The lump coal or moulded coal of gasification furnace 10 pass through the pyrolytic reaction above coal packed bed and the combustion reaction caused by the oxygen of lower section
And gasify.The high-temperature reducing gas generated in melting gasification furnace 10 by gasification reaction is supplied successively by reducing gas supply pipe 40
Fluidized bed reduction furnace 20 should be arrived and be used as reducing agent and fluidizing gas.
It is formed with the space of dome (dome) shape above the packed bed of melting gasification furnace 10, gas flow rate is reduced with this,
It is generated micro- to prevent the micro mist for including in the reduced iron being fitted into and the coal being packed into melting gasification furnace 10 to be rapidly heated
Powder is largely discharged into outside stove.It gas generated is not advised caused by directly using coal in addition, the space is also absorbed
The pressure oscillation in melting gasification furnace 10 caused by then changing.Coal falls on lower section and devolatilization and gasification in packed bed, most
Fallen eventually by the oxygen combustion by being blown into positioned at the air port of stove lower part.Burning gases at this time are filled through bed rising and are converted into high temperature
Reducing gas is simultaneously discharged into outside melting gasification furnace 10, and partial combustion gases through dust collect plant by dedusting and cooling so that molten
The pressure for melting gasification furnace 10 keeps certain in the range of 3.0 air pressures~3.5 air pressure.
The exhaust gas generated in cyclone (cyclone) trapping melting gasification furnace 10, fusion and gasification is supplied to by dust again
Stove 10, and gas is supplied to fluidized bed reduction furnace 20 by reducing gas supply pipe 40.Reduced iron is being filled together with coal
It is discharged to after the final reduction of reducing gas and the combustion heat and fusing that are generated by Coal Gasification and burning while whereabouts in bed
It is external.
The reducing gas being discharged from melting gasification furnace 10 is gradually reduced through 20 temperature of fluidized bed reduction furnace, therefore according to this reality
Plasma torch 30 for heating can separately be set by applying the molten iron preparation facilities of example.
Fig. 3 is to schematically show regarding for fluidized bed reduction furnace and plasma torch according to an embodiment of the invention
Figure.With reference to Fig. 3, in one embodiment of the invention, plasma gas 2 is directly blown into the also Primordial Qi of fluidized bed reduction furnace 20
The region that body flows into is burnt, to prevent the reducing gas damage after heating that the distribution in 20 lower part of fluidized bed reduction furnace is arranged
Plate 21 or the phenomenon that block distribution grid 21.
For this purpose, as shown in figure 3, plasma torch 30 is located at the outer wall of fluidized bed reduction furnace 20 in the present invention, and configure
Above distribution grid 21, plasma gas 2 is supplied to inside fluidized bed reduction furnace 20.
Fig. 4 is to schematically show bowing for fluidized bed reduction furnace and plasma torch according to an embodiment of the invention
View.With reference to Fig. 4, can multiple plasma torches 30 be set along the periphery of fluidized bed reduction furnace 20, plasma torch 30
Various configurations may be used in quantity.
In the present embodiment, plasma torch 30 forms flame 3 with plasma gas 2, with to fluidized bed reduction furnace 20
Internal heat supply, thus the fluid bed 1 inside fluidized bed reduction furnace 20 can absorb heat.The mean temperature of fluid bed 1 is positively retained at 500 DEG C
To 1000 DEG C.
In the present embodiment, plasma gas 2 can be hydrogen, nitrogen, helium or argon gas.Therefore, according to the present embodiment
Molten iron preparation facilities 100 do not consume from melting gasification furnace 10 and be supplied to reducing gas inside fluidized bed reduction furnace 20, can be with
To 1 heat supply of fluid bed inside fluidized bed reduction furnace 20.
In addition, burning without oxygen, therefore carbon dioxide and vapor are not will produce inside fluidized bed reduction furnace 20,
So as to improve the reduction rate of powder iron ore.As a result, due to having used the powder iron prepared with high reduction rate in melting gasification furnace 10
Mine can improve the operating efficiency of FINEX techniques and reduce molten iron production cost.
In addition, being generally shorter than the fluidisation by being used in fluidized bed reduction furnace 20 using the length of the flame 3 of plasma gas 2
The length for the diffusion flame that bed burner is formed, therefore reduced with the contact area of fluid bed 1, so as to reduce due to high temperature
The amount for the fusant that flame generates in fluidized bed reduction furnace 20.
In the present embodiment, plasma torch 30 can be received by what is be arranged outside fluidized bed reduction furnace 20 for electric installation 31
Electric power.The energy of 1MWh to 100MWh can be provided for electric installation 31 to plasma torch 30.
It may include control unit for electric installation 31, described control unit is for controlling energy supply amount, by fluid bed 1
Temperature is maintained at 500 DEG C to 1000 DEG C.In this way, being passed through including external independence according to the molten iron preparation facilities 100 of the present embodiment
For electric installation 31, the heat being supplied to inside fluidized bed reduction furnace 20 can be independently controlled, no matter the behaviour of fluidized bed reduction furnace
How make condition.
Illustrate the molten iron preparation method based on the present apparatus below.
Fig. 5 is the flow chart of molten iron preparation method according to an embodiment of the invention.With reference to Fig. 5, according to the present invention
The molten iron preparation facilities 100 of one embodiment powdery iron-containing mine and auxiliary material are mixed and contain iron mixture made of dry
It is restored and is burnt into through fluidized bed reduction furnace 20, to be converted into reduced iron (S100).Powdery iron-containing mine and auxiliary material and height
Warm reducing gas air flow contacts, to form bubble fluid bed, and be converted into being warming up to 80 DEG C or more, 80% reduction and 30% with
The high temperature reduction iron of upper firing.
Then, reduced iron is packed into melting gasification furnace 10 and is blown into oxygen, to prepare molten iron (S200).To melting gasification furnace
Moulded coal obtained from 10 supply lump coal or coal powder formation, to form coal packed bed.It is packed into the lump coal or moulded coal of melting gasification furnace 10
Gasify by pyrolytic reaction above coal packed bed and by combustion reaction caused by the oxygen of lower section.Reduced iron and coal one
Play the reducing gas and the combustion heat finally reduction and fusing that the while of falling in packed bed is generated by Coal Gasification and burning
After be discharged to the outside.
The high-temperature reducing gas generated in melting gasification furnace 10 by gasification reaction is supplied by reducing gas supply pipe 40
Fluidized bed reduction furnace 20 (S300) should be arrived.
It generates reducing gas in melting gasification furnace 10 to be gradually reduced through 20 temperature of fluidized bed reduction furnace, therefore according to this implementation
The molten iron preparation method of example is being converted into containing iron mixture in the step S100 of reduced iron, the overlying regions flowed into reducing gas
Plasma gas 2 is blown into burn.
Plasma gas 2 forms flame to 20 inside heat supply of fluidized bed reduction furnace, thus inside fluidized bed reduction furnace 20
Fluid bed 1 can absorb heat.The mean temperature of fluid bed 1 is positively retained at 500 DEG C to 1000 DEG C.
Therefore, it is not consumed from melting gasification furnace 10 according to the molten iron preparation method of the present embodiment and is supplied to fluidized bed reduction furnace
Reducing gas inside 20, can be to 1 heat supply of fluid bed inside fluidized bed reduction furnace 20.
In addition, burning without oxygen, therefore carbon dioxide and vapor are not will produce inside fluidized bed reduction furnace 20,
So as to improve the reduction rate of powder iron ore.As a result, due to using the powder iron ore prepared with high reduction rate in melting gasification furnace 10,
The operating efficiency of FINEX techniques can be improved and reduce molten iron production cost.
In addition, being generally shorter than the fluidisation by being used in fluidized bed reduction furnace 20 using the length of the flame 3 of plasma gas 2
The length for the diffusion flame that bed burner is formed, therefore reduced with the contact area of fluid bed 1, so as to reduce due to high temperature
The amount for the fusant that flame generates in fluidized bed reduction furnace 20.
The preferred embodiment of the present invention is described in detail above it should be appreciated that claim model of the invention
It encloses and is not limited thereto, those skilled in the art is carried out using the basic conception of the present invention defined in claims
Various changes and improvement also belong to the present invention interest field.
Claims (12)
1. a kind of molten iron preparation facilities, including：
Fluidized bed reduction furnace, the fluidized bed reduction furnace provide reduced iron；
Melting gasification furnace is packed into the reduced iron in the melting gasification furnace, and is blown into oxygen to the fusion and gasification furnace interior,
To prepare molten iron；And
Plasma torch, the plasma torch are blown into plasma gas to the fluid bed reduction furnace interior.
2. molten iron preparation facilities according to claim 1, wherein
The plasma torch forms flame using the plasma gas, with to the fluid bed reduction furnace interior heat supply.
3. molten iron preparation facilities according to claim 2, wherein
The plasma gas is any one of hydrogen, nitrogen, helium and argon gas gas.
4. molten iron preparation facilities according to claim 1, wherein
The mean temperature of the fluid bed of the fluid bed reduction furnace interior is 500 DEG C to 1000 DEG C.
5. molten iron preparation facilities according to claim 1, further includes：
It is described to be arranged in the outside of the fluidized bed reduction furnace for electric installation and connect with the plasma torch for electric installation.
6. molten iron preparation facilities according to claim 5, wherein
The energy for supplying 1MWh to 100MWh to the plasma torch for electric installation.
7. molten iron preparation facilities according to claim 1, wherein
The fluidized bed reduction furnace include reducing gas by distribution grid,
The plasma torch is located at the top of the distribution grid and the outer wall positioned at the fluidized bed reduction furnace.
8. molten iron preparation facilities according to claim 7, wherein
The plasma torch is multiple along the outer wall setting of the fluidized bed reduction furnace.
9. molten iron preparation facilities according to claim 1, further includes：
The reducing gas being discharged from the melting gasification furnace is supplied to institute by reducing gas supply pipe, the reducing gas supply pipe
State fluidized bed reduction furnace.
10. a kind of molten iron preparation method, includes the following steps：
Made of powdery iron-containing mine and auxiliary material are mixed and are dried containing iron mixture through fluidized bed reduction furnace carry out reduction and
Firing, to be converted into reduced iron；
The reduced iron is packed into melting gasification furnace, and oxygen is blown into the melting gasification furnace, to prepare molten iron；And
The reducing gas being discharged from the melting gasification furnace is supplied to the fluidized bed reduction furnace,
The step of iron mixture is converted into reduced iron will be contained described, the overlying regions flowed into the reducing gas are blown into
Ionized gas burns.
11. molten iron preparation method according to claim 10, wherein
The plasma gas is any one of hydrogen, nitrogen, helium and argon gas gas.
12. molten iron preparation method according to claim 10, wherein
The mean temperature of the fluid bed of the fluid bed reduction furnace interior is 500 DEG C to 1000 DEG C.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-2015-0185026 | 2015-12-23 | ||
| KR1020150185026A KR101699236B1 (en) | 2015-12-23 | 2015-12-23 | An apparatus for manufacturing molten irons and manufacturing method using the same |
| PCT/KR2016/015088 WO2017111490A1 (en) | 2015-12-23 | 2016-12-22 | Molten iron manufacturing device and molten iron manufacturing method using same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108541273A true CN108541273A (en) | 2018-09-14 |
| CN108541273B CN108541273B (en) | 2020-06-05 |
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ID=57992986
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201680074988.3A Active CN108541273B (en) | 2015-12-23 | 2016-12-22 | Molten iron manufacturing apparatus and molten iron manufacturing method using the same |
Country Status (3)
| Country | Link |
|---|---|
| KR (1) | KR101699236B1 (en) |
| CN (1) | CN108541273B (en) |
| WO (1) | WO2017111490A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109628676A (en) * | 2019-01-07 | 2019-04-16 | 山西赛思普科技有限公司 | A kind of abbreviated system directly producing pure molten iron |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20240018205A (en) | 2022-08-02 | 2024-02-13 | 주식회사 포스코 | Facility for manufacturing molten iron and method for manufacturing molten iron |
| KR20240018206A (en) | 2022-08-02 | 2024-02-13 | 주식회사 포스코 | Facility for manufacturing molten iron and method for manufacturing molten iron |
| KR20240018212A (en) | 2022-08-02 | 2024-02-13 | 주식회사 포스코 | Facility for manufacturing molten iron and method for manufacturing molten iron |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1074581A (en) * | 1996-08-30 | 1998-03-17 | Fuji Electric Co Ltd | Plasma type fluidized bed reactor |
| CN1754003A (en) * | 2002-12-23 | 2006-03-29 | Posco公司 | An apparatus for manufacturing moltens irons to improve operation of fluidized bed type reduction apparatus and manufacturing method using the same |
| CN101597662A (en) * | 2009-07-02 | 2009-12-09 | 贾会平 | A kind of method of producing direct-reduced iron |
| UA90788C2 (en) * | 2008-09-15 | 2010-05-25 | Анатолий Тимофеевич Неклеса | Method for producing iron-containing material with direct reduction |
| RU2009118155A (en) * | 2008-06-23 | 2010-11-20 | Анатолий Тимофеевич Неклеса (UA) | METHOD FOR DIRECT IRON RECOVERY AND DEVICE FOR ITS IMPLEMENTATION |
| CN102653805A (en) * | 2012-05-25 | 2012-09-05 | 沈阳博联特熔融还原科技有限公司 | Submerged arc plasma smelting ironmaking method |
| CN103045788A (en) * | 2012-12-04 | 2013-04-17 | 中冶赛迪工程技术股份有限公司 | Reduction steel-making method and reduction steel-marking device |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11131118A (en) * | 1997-10-31 | 1999-05-18 | Nkk Corp | Preliminarily reducing furnace |
| KR101191954B1 (en) * | 2005-12-26 | 2012-10-17 | 주식회사 포스코 | Apparatus for manufacturing molten irons provided with an improved a fluidized-bed reduction reactor |
| KR100851806B1 (en) * | 2006-12-28 | 2008-08-13 | 주식회사 포스코 | Apparatus for manufacturing molten irons and method for manufacturing molten irons using the same |
-
2015
- 2015-12-23 KR KR1020150185026A patent/KR101699236B1/en active IP Right Grant
-
2016
- 2016-12-22 WO PCT/KR2016/015088 patent/WO2017111490A1/en active Application Filing
- 2016-12-22 CN CN201680074988.3A patent/CN108541273B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1074581A (en) * | 1996-08-30 | 1998-03-17 | Fuji Electric Co Ltd | Plasma type fluidized bed reactor |
| CN1754003A (en) * | 2002-12-23 | 2006-03-29 | Posco公司 | An apparatus for manufacturing moltens irons to improve operation of fluidized bed type reduction apparatus and manufacturing method using the same |
| RU2009118155A (en) * | 2008-06-23 | 2010-11-20 | Анатолий Тимофеевич Неклеса (UA) | METHOD FOR DIRECT IRON RECOVERY AND DEVICE FOR ITS IMPLEMENTATION |
| UA90788C2 (en) * | 2008-09-15 | 2010-05-25 | Анатолий Тимофеевич Неклеса | Method for producing iron-containing material with direct reduction |
| CN101597662A (en) * | 2009-07-02 | 2009-12-09 | 贾会平 | A kind of method of producing direct-reduced iron |
| CN102653805A (en) * | 2012-05-25 | 2012-09-05 | 沈阳博联特熔融还原科技有限公司 | Submerged arc plasma smelting ironmaking method |
| CN103045788A (en) * | 2012-12-04 | 2013-04-17 | 中冶赛迪工程技术股份有限公司 | Reduction steel-making method and reduction steel-marking device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109628676A (en) * | 2019-01-07 | 2019-04-16 | 山西赛思普科技有限公司 | A kind of abbreviated system directly producing pure molten iron |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2017111490A1 (en) | 2017-06-29 |
| CN108541273B (en) | 2020-06-05 |
| KR101699236B1 (en) | 2017-01-24 |
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