CN104694687A - Apparatus for manufacturing molten iron and method for manufacturing molten iron using same - Google Patents
Apparatus for manufacturing molten iron and method for manufacturing molten iron using same Download PDFInfo
- Publication number
- CN104694687A CN104694687A CN201510038469.9A CN201510038469A CN104694687A CN 104694687 A CN104694687 A CN 104694687A CN 201510038469 A CN201510038469 A CN 201510038469A CN 104694687 A CN104694687 A CN 104694687A
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- CN
- China
- Prior art keywords
- blocks
- high temperature
- molten iron
- storage tanks
- preparation facilities
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Classifications
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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
- C21B13/0006—Making spongy iron or liquid steel, by direct processes obtaining iron or steel in a molten state
- C21B13/0013—Making spongy iron or liquid steel, by direct processes obtaining iron or steel in a molten state introduction of iron oxide into a bath of molten iron containing a carbon reductant
- C21B13/002—Reduction of iron ores by passing through a heated column of carbon
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B13/00—Making spongy iron or liquid steel, by direct processes
- C21B13/14—Multi-stage processes processes carried out in different vessels or furnaces
- C21B13/143—Injection of partially reduced ore into a molten bath
Abstract
Provided are an apparatus and method for manufacturing molten iron. The apparatus for manufacturing molten iron, according to the present invention, comprises: a multi-stage fluid bed furnace for converting fine iron ores into reduced fine iron through reduction; at least one high-temperature compacting unit for preparing a high-temperature compacted iron by compressing the reduced fine iron; at least one crushing unit for crushing the high-temperature compacted iron to have a certain particle size; a first conveying unit for conveying the crushed high-temperature compacted iron; and a melting furnace for melting the conveyed high-temperature compacted iron by combusting fine or lump coal, and for supplying a reducing gas, which is generated in the furnace, to a fluidized reduction furnace. In addition, the apparatus further comprises at least one compacted iron storing unit for storing some of the compacted iron which has been crushed. According to the present invention, molten iron can be manufactured stably and efficiently.
Description
The application is the divisional application of No. 201180055721.7 application for a patent for invention being entitled as " a kind of molten iron preparation facilities and utilize the molten iron preparation method of this device ".The corresponding international application PCT/KR2011/008842 of original application, the applying date is on November 18th, 2011, and priority date is on November 19th, 2010.
Technical field
The present invention relates to a kind of molten iron preparation facilities, one relates to introduces high temperature blocks storage tanks, thus can stablize and effectively carry out molten iron preparation facilities prepared by molten iron.
Background technology
Just comprise multi-stage fluidized stove and melting furnace, and directly use powdery or the general carbon of bulk and the molten iron preparation facilities in powdery iron-containing ore deposit, when sufficient reducing gas can not be supplied to fluidized furnace from melting furnace, cannot fluidized-bed be formed, thus cause operation itself to become cannot carrying out.
Thus, the high temperature blocks prepared by reduction in described fluidized furnace and consolidated block reduced iron powder cannot be supplied to melting furnace.
As above situation, can occur when described melting furnace does not prepare the reducing gas of the q.s needed for described fluidized furnace, namely can occur when operation starts and interrupt, in addition, the melting furnace underproduction that can produce at operation and the equipment obstacle due to melting furnace occurs when causing reducing gas output to reduce.
Further, the supply of the described high temperature reduction iron of melting furnace is interrupted, and also can occur when the equipment generation obstacle of fluidized furnace or high temperature blocks device.
If the supply of the high temperature consolidated block iron of melting furnace is interrupted, can be left the heat needed for reduced iron melting in melting furnace, therefore melting furnace can overheat, and finally needs the operation interrupting melting furnace, for avoiding the generation of this kind of situation, need directly to supply extra source of iron to melting furnace.
Described extra source of iron directly need be supplied to melting furnace, and must be block reduced iron, therefore, the general carbon of existing direct use powdery or bulk and the molten iron preparation facilities containing the ore of powdery iron ore use, the block reduced iron supplied from outside.
So, compared with the high temperature reduction iron prepared by fluidized furnace, higher from the price of the block reduced iron of outside supply, add the operating cost of molten iron preparation facilities, and should use with normal temperature state, heat compared with high temperature reduction iron needed for intensification can increase, thus cause the coal usage quantity in melting furnace to increase, final molten iron production amount yields poorly than design, thus the production efficiency of the general carbon of existing direct use powdery or bulk and the molten iron preparation facilities containing iron ore of powdery is reduced.
Summary of the invention
The problem that invention will solve
The present invention is for solving the problem and proposing, its object is to, a kind of molten iron preparation facilities utilizing multi-stage fluidized stove and melting furnace is provided, it is when normal operation, prepare unnecessary high temperature blocks, and be stored in blocks storage tanks, afterwards when improper operation, stored blocks is encased in melting furnace, thus stability and the efficiency of molten iron preparation technology can be reached.
Solve the method for problem
For achieving the above object, molten iron preparation facilities comprises according to the preferred embodiment of the invention: multi-stage fluidized stove, is converted into reduced iron powder for reducing powder iron ore; At least one high temperature consolidated block device, prepares high temperature blocks for suppressing described reduced iron powder; At least one shredder assembly, for high temperature blocks described in specific particle size reduction; First transfer device, for transferring the high temperature blocks of described fragmentation; And melting furnace, the high temperature blocks transferred described in melting for burning pulverized or block general carbon, and the reducing gas produced in stove is supplied to Reduction on Fluidized Bed stove.
Molten iron preparation facilities according to the present invention also comprises at least one blocks storage tanks, for storing a part for the high temperature blocks of described fragmentation.
And, also comprise the second transfer device, for described high temperature blocks is transferred to described blocks storage tanks.
And, at least one shredder assembly lower end described has two road chutes, the high temperature blocks of described fragmentation is supplied to described first transfer device by the first discharge gate of described two road chutes, and the high temperature blocks of described fragmentation is supplied to described second transfer device by the second discharge gate of described two road chutes.
Described blocks storage tanks bottom comprises nitrogen supply-pipe.
And described blocks storage tanks top comprises vapor pipe.
Described vapor pipe has pressure regulator valve, thus keeps the pressure of described blocks storage tanks to be greater than normal atmosphere.
Described blocks storage tanks comprises water level gauge, to detect the amount of the blocks of storage tanks inside.
Described molten iron preparation facilities also comprises the 3rd transfer device, and described blocks storage tanks lower end has discharger, thus blocks is supplied to described 3rd transfer device, and described blocks is transferred to described first transfer device by described 3rd transfer device.
Described molten iron preparation facilities also comprises co 2 removal device, the part of the waste gas of discharging for separating of described fluidized furnace and remove carbonic acid gas, added to afterwards in the reducing gas that described melting furnace supplies, thus reducing gas is supplied to described fluidized furnace.
And, described molten iron preparation facilities also comprises gas circulation refrigerating unit, the part of the reducing gas produced for separating of described melting furnace also, after cooling, makes the reducing gas recirculation that its and described melting furnace supply, thus control is supplied to the temperature of the reducing gas of described fluidized furnace.
Molten iron preparation method according to another preferred embodiment of the invention comprises: utilize the step that powder iron ore reduction is reduced iron powder by multi-stage fluidized stove; Utilize consolidated block device to suppress described reduced iron powder and prepare the step of high temperature blocks; Utilize the step of the broken described high temperature blocks of shredder assembly; The blocks of described fragmentation is transplanted on the step of feeder; And burning pulverized or block general carbon, thus melting is encased in the step of the blocks of melting furnace from described feeder.
Molten iron preparation method according to the present invention also comprises a step part for the blocks of described fragmentation being transferred to blocks storage tanks.
And described molten iron preparation method also comprises the step utilizing two road chutes the blocks of described fragmentation to be assigned to described feeder or described blocks storage tanks.
And, when the high temperature blocks needed for described melting furnace can be prepared by described fluidized furnace, consolidated block device and shredder assembly, preparation exceedes the unnecessary high temperature blocks of the block scale of construction of high temperature needed for described melting furnace, and described unnecessary high temperature blocks is transferred by spells by described two road chutes and is stored to described blocks storage tanks.
And, when the high temperature blocks needed for described melting furnace can not be prepared by described fluidized furnace, consolidated block device and shredder assembly, the blocks being stored in described blocks storage tanks is supplied to melting furnace continuously by transfer device.
If by high temperature blocks turnout, the ratio with the high temperature blocks demand needed for described melting furnace produced by described fluidized furnace, consolidated block device and shredder assembly, be defined as,
Super rate=(turnout of high temperature blocks)/(demand of high temperature blocks) × 100, then described super rate is 110% ~ 120%.
The residence time of described high temperature blocks in described blocks storage tanks is 6 little of 12 hours.
Invention effect
According to molten iron preparation facilities of the present invention, by being provided in powder iron ore reduction, consolidated block and the loading means in fluidized furnace, and can by independent for the high temperature reduction iron means being also effectively supplied to melting furnace, even if when initial start stage operation and the startup of carrying out the fluidized furnace that operation or equipment obstacle cause are interrupted, also effectively can carry out the molten iron preparation in described melting furnace, thus the production efficiency of the molten iron preparation facilities containing iron ore of general carbon and the powdery directly using described powdery or bulk can be improved.
Accompanying drawing explanation
Fig. 1 is the formation schematic diagram of the molten iron preparation facilities that can store the blocks storage tanks of unnecessary high temperature blocks according to introducing of the present invention.
Embodiment
With reference to accompanying drawing and the embodiment be described below in detail, can know and explain advantage of the present invention and its implementation method of characteristic sum.But the present invention is not limited to the disclosed embodiments below; can realize with variform; the present embodiment is just of the present invention open more complete in order to make; and intactly introduce the protection domain of invention to those skilled in the art and provide, protection scope of the present invention defines in the claims.In the description, identical Reference numeral refers to identical integrant.
With reference to the accompanying drawings, the molten iron preparation facilities that the preferred embodiment of the present invention relates to is described.When describing of the present invention, think that when technical essential of the present invention may be made to become do not know to the specific descriptions of related known function or formation, description is omitted.
Fig. 1 is according to the formation schematic diagram with the molten iron preparation facilities of unnecessary high temperature blocks storage tanks 600 of the present invention.
With reference to Fig. 1, in multi-stage fluidized stove 100, be after reduced iron powder by powder iron ore reduction, the reduced iron powder of obsession reduction and prepare high temperature blocks, then with specific particle size reduction high temperature blocks.
Utilize two road chutes 700 that the high temperature blocks of described fragmentation is supplied to the first transfer device 400, thus be transferred to feeder, and blocks is supplied to the second other transfer device 430, thus unnecessary blocks is stored in blocks charge chute, when the beginning of operation, interruption, operation obstacle and equipment obstacle occur, stored blocks is supplied to melting furnace 500, thus stable molten iron can be prepared.
With reference to Fig. 1, molten iron preparation facilities according to the present invention comprises: multi-stage fluidized stove, is converted into reduced iron powder for reducing powder iron ore; At least one high temperature consolidated block device, prepares high temperature blocks for suppressing described reduced iron powder; At least one shredder assembly 300, for high temperature blocks described in specific particle size reduction; First transfer device 400, for transferring the high temperature blocks of described fragmentation; And melting furnace 500, the high temperature blocks transferred described in melting for burning pulverized or block general carbon, and the reducing gas produced in stove is supplied to Reduction on Fluidized Bed stove.
Fig. 1 shows three grades of fluidized furnaces 100, but this is only illustrate, and the formation quantity of fluidized furnace 100 can be more than three.
When fluidized furnace 100 is three grades, one-level fluidized furnace 100 preheating powder iron ore, the powder iron ore of secondary fluidized furnace 100 prereduction institute preheating, three grades of final reducing powder iron ores of fluidized furnace 100.
In described fluidized furnace 100, auxiliary material or the additives such as Wingdale (limestone), rhombspar can be loaded simultaneously, adhere to the phenomenon of fluidized furnace 100 inside, reduced iron powder in the phenomenon of melting furnace internal fracture to prevent powder iron ore.
In order to make described powder iron ore consolidated block before being encased in melting furnace 500 for reducing, utilize the reduced iron powder of consolidated block device 200 and preparation bulk.Described consolidated block device 200 suppresses the powder iron ore reduced of loading by pair of rolls, thus prepares blocks.
By high temperature blocks prepared by described consolidated block device 200, be broken into the granularity being applicable to loading melting furnace 500 by the shredder assembly 300 of consolidated block device 200 bottom.
The blocks of described fragmentation, a discharge gate of the two road chutes 700 had by shredder assembly 300 bottom is transferred to the first transfer device 400.
The high temperature blocks being supplied to described first transfer device 400 is transferred to feeder, is encased in melting furnace 500 continuously from feeder, at the general carbon of melting furnace 500 combustion powder carbon or bulk, thus melting blocks, to prepare molten iron.
Described melting furnace 500 is by the general carbon of oxygen combustion powdery or bulk, thus melting blocks, now produces reducing gas, and is supplied to the fluidized furnace 100 be connected with melting furnace 500, thus supply is for reducing the reducing gas of reduced iron powder.
By another discharge gate of described two road chutes 700, high temperature blocks is supplied to the second transfer device 430 of described two road chute 700 lower ends, and by described second transfer device 430 high temperature blocks is transferred and be stored to blocks storage tanks 600.
More specifically, at least one shredder assembly 300 lower end described has two road chutes 700, the high temperature blocks of described fragmentation is supplied to the first transfer device 400 by the first discharge gate of described two road chutes 700, and the high temperature blocks of described fragmentation is supplied to described second transfer device 430 by the second discharge gate of described two road chutes 700.
The discharge gate of described two road chutes 700 has valve respectively, selects the first transfer device 400 or the second transfer device 430 to enable the transfer direction of high temperature blocks.
And described blocks storage tanks 600 bottom comprises nitrogen supply-pipe 610, and top comprises vapor pipe 630.
Described vapor pipe 630 has pressure regulator valve 635, and the pressure of described blocks storage tanks 600 can be kept thus to be greater than normal atmosphere.
Namely, with regard to described blocks storage tanks 600, its underpart has nitrogen supply-pipe 610, thus supply nitrogen, the vapor pipe 630 that top has, thus Exhaust Gas, described vapor pipe 630 has pressure regulator valve 635, thus the pressure of described blocks storage tanks 600 can be kept to be greater than normal atmosphere, extraneous air can be made to flow into and to minimize.
And described blocks storage tanks 600 comprises water level gauge, to detect the amount being encased in inner blocks.Be formed at the height of inner high temperature blocks layer by water level gauge METHOD FOR CONTINUOUS DETERMINATION, thus can prevent from supplying the blocks of the capacity exceeding described high temperature blocks storage tanks 600.
And, the amount of the high temperature blocks being stored in described high temperature blocks storage tanks 600 can be detected.
Described molten iron preparation facilities also comprises the 3rd transfer device 450, described blocks storage tanks 600 lower end has discharger 660, thus blocks being supplied to described 3rd transfer device 450, described blocks is transferred to described first transfer device 400 by described 3rd transfer device 450.
Molten iron preparation facilities according to the present invention also can comprise waste gas modifying apparatus 800, with by described multi-stage fluidized stove 100 expellant gas, after captation cooling, be separated a part and compress, and after removal carbonic acid gas, the high-temperature reducing gas of discharging with described melting furnace 500 mixes, thus reducing gas can be supplied to further described multi-stage fluidized stove 100.
And, in order to the tar that the powder carbon of use in thermolysis melting furnace 500 or the general carbon of bulk produce, the reducing gas maintaining the high temperature that described melting furnace 500 is discharged is more than 1000 DEG C, is necessary the temperature of this high-temperature reducing gas to be reduced to 700 DEG C ~ 800 DEG C needed for described multi-stage fluidized stove 100.
By the high-temperature reducing gas that the co 2 removal gas and described melting furnace 500 that mix the normal temperature of described waste gas modifying apparatus 800 supply are discharged, can cool first.
And, also can comprise gas circulation refrigerating unit 900, for a part for the high-temperature reducing gas with described co 2 removal gas and vapor permeation is separated, and in captation after cooling, carry out compression and again mix with described high-temperature reducing gas, thus till being further cooled to the temperature of the reducing gas being supplied to described multi-stage fluidized stove 100.
The molten iron preparation method that another preferred embodiment of the present invention relates to, comprising: utilize the step that powder iron ore reduction is reduced iron powder by multi-stage fluidized stove 100; Utilize consolidated block device to suppress described reduced iron powder, and prepare the step of high temperature blocks; Utilize the step of the broken described high temperature blocks of shredder assembly 300; The blocks of described fragmentation is transplanted on the step of feeder; And burning pulverized or block general carbon, thus melting is encased in the step of the blocks of melting furnace 500 from described feeder.
Described molten iron preparation method also comprises a step part for the blocks of described fragmentation being transferred to blocks storage tanks 600.
And, also comprise the step utilizing two road chutes 700 blocks of described fragmentation to be assigned to described feeder or described blocks storage tanks 600.
Under normally carrying out the situation of continuous seepage molten iron, namely, when passing through described fluidized furnace 100, consolidated block device and shredder assembly 300, when can prepare the high temperature blocks needed for described melting furnace 500, preparation exceedes the unnecessary high temperature blocks of the block scale of construction of high temperature needed for described melting furnace 500, described unnecessary high temperature blocks is by the effect of described two road chutes 700, high temperature blocks is discharged to transfer device by spells from shredder assembly 300, thus can be transferred and be stored in described blocks storage tanks 600.
And, described molten iron preparation method is under improper job status, namely, when passing through described fluidized furnace 100, consolidated block device and shredder assembly 300, when can not prepare the high temperature blocks needed for described melting furnace, the blocks being stored in described blocks storage tanks 600 is discharged to the 3rd transfer device 450 by discharger 660, discharged blocks is transplanted on the first transfer device 400 by the 3rd transfer device 450, thus required high temperature blocks can be supplied to melting furnace 500 continuously.
In order to realize operation process as above, the demand of the high temperature blocks of described melting furnace 500 should be exceeded by the high temperature blocks turnout of described fluidized furnace 100, consolidated block device 200 and shredder assembly 300.
If by high temperature blocks turnout, the ratio with the high temperature blocks demand needed for described melting furnace 500 produced by described fluidized furnace 100, consolidated block device 200 and shredder assembly 300, be defined as,
Super rate=(turnout of high temperature blocks)/(demand of high temperature blocks) × 100, then described super rate is 110% ~ 120%.
Directly using in powdery or the general carbon of bulk and the molten iron preparation facilities in powdery iron-containing ore deposit, there is the ratio of the time of abnormal condition and reach based on about 80% to 90% in the scope that described equipment consumption surpasses rate in whole start time.
On the one hand, in order to prepare described high temperature blocks, by the reducing gas needed for the further supplying fluidizing stove 100 of co 2 removal device.
The residence time of described high temperature blocks in described blocks storage tanks 600 can be 6 little of 12 hours.
On the one hand, in normal operation, in blocks storage tanks 600, the storage time of high temperature blocks may be long, in this case, the cooling and differentiation etc. of high temperature blocks can be produced, its result, the proterties being supplied to the high temperature blocks of described melting furnace 500 when abnormal condition may deterioration.
In order to prevent as above situation, preferably, the high temperature blocks of described high temperature blocks storage tanks 600 bottom will be, discharge a part by described discharger 660, and periodically replace the amount of the high temperature blocks of described discharge with the new high temperature blocks prepared by fluidized furnace 100, consolidated block device 200 and shredder assembly 300 and discharge.
As above a series of replacement process, can keep the certain residence time of high temperature blocks in described blocks storage tanks 600, and the described residence time is preferably 6 little of 12 hours.
This is because, when the residence time is below 6 hours, in order to carry out described replacement process, the high temperature reduction iron of a great deal of can be supplied to described blocks storage tanks 600, the blocks of corresponding amount should be discharged from blocks storage tanks 600 therewith simultaneously, this poor efficiency causing operation and equipment to run.
In addition, when the residence time is more than 12 hours, cooling and the dissociation of described high temperature blocks obtain more serious.
More than describe embodiments of the invention with reference to the accompanying drawings, but those skilled in the art can understand, the present invention, when not revising its technological thought or essential features, can implement in other specific ways.
Therefore, should be understood to embodiment described above be only citing and be not intended to limit the present invention.Protection scope of the present invention is not as the criterion with foregoing description content, but is as the criterion with subsidiary claims, and all changes of being derived by the implication of claims and scope and its impartial concept or the form of change, all belong to protection scope of the present invention.
Claims (9)
1. a molten iron preparation facilities, comprising:
Multi-stage fluidized stove, is converted into reduced iron powder for reducing powder iron ore;
At least one consolidated block device, prepares high temperature blocks for suppressing described reduced iron powder;
At least one shredder assembly, for high temperature blocks described in specific particle size reduction;
First transfer device, for transferring the high temperature blocks of described fragmentation;
Melting furnace, the high temperature blocks transferred described in melting for burning pulverized or block general carbon, and the reducing gas produced in stove is supplied to described Reduction on Fluidized Bed stove; And
At least one blocks storage tanks, for storing a part for the high temperature blocks of described fragmentation,
Wherein said blocks storage tanks bottom comprises nitrogen supply-pipe.
2. molten iron preparation facilities according to claim 1, also comprises the second transfer device, for described high temperature blocks is transferred to described blocks storage tanks.
3. molten iron preparation facilities according to claim 2, at least one shredder assembly lower end described has two road chutes,
The high temperature blocks of described fragmentation is supplied to described first transfer device by the first discharge gate of described two road chutes,
The high temperature blocks of described fragmentation is supplied to described second transfer device by the second discharge gate of described two road chutes.
4. the molten iron preparation facilities according to any one of claim 1-3, described blocks storage tanks top comprises vapor pipe.
5. molten iron preparation facilities according to claim 4, described vapor pipe has pressure regulator valve, thus keeps the pressure of described blocks storage tanks to be greater than normal atmosphere.
6. molten iron preparation facilities according to claim 5, described blocks storage tanks comprises water level gauge, to detect the amount of the blocks of storage tanks inside.
7. molten iron preparation facilities according to claim 5, described molten iron preparation facilities also comprises the 3rd transfer device,
Described blocks storage tanks lower end has discharger, thus blocks is supplied to described 3rd transfer device, and described blocks is transferred to described first transfer device by described 3rd transfer device.
8. molten iron preparation facilities according to claim 1, also comprise co 2 removal device, be separated a part for the waste gas that described fluidized furnace is discharged and remove carbonic acid gas, being added to afterwards in the reducing gas that described melting furnace supplies, thus reducing gas is supplied to described fluidized furnace.
9. the molten iron preparation facilities according to claim 1 or 8, also comprise gas circulation refrigerating unit, the part of the reducing gas produced for separating of described melting furnace after cooling, make the reducing gas recirculation that itself and described melting furnace supply, thus control the temperature being supplied to the reducing gas of described fluidized furnace.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-2010-0115554 | 2010-11-19 | ||
| KR20100115554A KR101187851B1 (en) | 2010-11-19 | 2010-11-19 | Apparatus for manufacturing molten iron and method for manufacturing thereof |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201180055721.7A Division CN103221555B (en) | 2010-11-19 | 2011-11-18 | Apparatus for manufacturing molten iron and method for manufacturing molten iron using same |
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| CN104694687A true CN104694687A (en) | 2015-06-10 |
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| CN201180055721.7A Active CN103221555B (en) | 2010-11-19 | 2011-11-18 | Apparatus for manufacturing molten iron and method for manufacturing molten iron using same |
| CN201510038469.9A Pending CN104694687A (en) | 2010-11-19 | 2011-11-18 | Apparatus for manufacturing molten iron and method for manufacturing molten iron using same |
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| CN201180055721.7A Active CN103221555B (en) | 2010-11-19 | 2011-11-18 | Apparatus for manufacturing molten iron and method for manufacturing molten iron using same |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP2641981B1 (en) |
| KR (1) | KR101187851B1 (en) |
| CN (2) | CN103221555B (en) |
| WO (1) | WO2012067462A2 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| KR101451405B1 (en) * | 2012-11-30 | 2014-10-15 | 주식회사 포스코 | Apparatus for hardening microgranulates and apparatus for manufacturing molten iron comprising the same |
| KR101417652B1 (en) * | 2013-06-24 | 2014-07-08 | 주식회사 포스코 | Apparatus and Method for preventing a formation of gas congestion in rector |
| KR101550893B1 (en) * | 2013-12-10 | 2015-09-18 | 주식회사 포스코 | Method and apparatus for manufacturing molten iron |
| DE102014111906A1 (en) | 2014-08-20 | 2016-02-25 | Maschinenfabrik Köppern Gmbh & Co. Kg | Plant for hot briquetting |
| EP3216880B1 (en) * | 2014-11-06 | 2019-06-19 | Posco | Composite molten iron manufacturing apparatus |
| KR101660696B1 (en) * | 2015-09-08 | 2016-09-28 | 주식회사 포스코 | Tar decomposition device, apparatus and method for manufacturing molten irons |
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| DE60321221D1 (en) * | 2002-12-21 | 2008-07-03 | Posco Pohang | DEVICE FOR PRODUCING MELT-LIQUID IRON BY HOT COMPRESSION OF FINE, DIRECT REDUCED IRONS AND CALCINATED ADDITIVES AND METHOD OF USE THEREOF |
| KR101197694B1 (en) * | 2005-09-12 | 2012-11-05 | 주식회사 포스코 | Apparatus for manufacturing compacted irons comprising fine reduced irons, and apparatus for manufacturing molten irons provided with the same |
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2010
- 2010-11-19 KR KR20100115554A patent/KR101187851B1/en active IP Right Grant
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2011
- 2011-11-18 EP EP11842354.0A patent/EP2641981B1/en active Active
- 2011-11-18 CN CN201180055721.7A patent/CN103221555B/en active Active
- 2011-11-18 CN CN201510038469.9A patent/CN104694687A/en active Pending
- 2011-11-18 WO PCT/KR2011/008842 patent/WO2012067462A2/en active Application Filing
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Also Published As
| Publication number | Publication date |
|---|---|
| EP2641981A4 (en) | 2017-08-30 |
| WO2012067462A2 (en) | 2012-05-24 |
| EP2641981B1 (en) | 2019-06-05 |
| CN103221555A (en) | 2013-07-24 |
| WO2012067462A3 (en) | 2012-08-23 |
| KR20120054262A (en) | 2012-05-30 |
| EP2641981A2 (en) | 2013-09-25 |
| CN103221555B (en) | 2015-07-15 |
| KR101187851B1 (en) | 2012-10-04 |
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Application publication date: 20150610 |