EP2883968A1 - Agglomerationsvorrichtung für direkt-reduziertes eisen - Google Patents

Agglomerationsvorrichtung für direkt-reduziertes eisen Download PDF

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Publication number
EP2883968A1
EP2883968A1 EP13810023.5A EP13810023A EP2883968A1 EP 2883968 A1 EP2883968 A1 EP 2883968A1 EP 13810023 A EP13810023 A EP 13810023A EP 2883968 A1 EP2883968 A1 EP 2883968A1
Authority
EP
European Patent Office
Prior art keywords
direct
reduced iron
shut
rolls
plate
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP13810023.5A
Other languages
English (en)
French (fr)
Other versions
EP2883968A4 (de
Inventor
Myung-Chan Shin
Do-Seung Kim
Jae-Hoon Jung
Young-Bae HA
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Posco Holdings Inc
Original Assignee
Posco Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Posco Co Ltd filed Critical Posco Co Ltd
Publication of EP2883968A1 publication Critical patent/EP2883968A1/de
Publication of EP2883968A4 publication Critical patent/EP2883968A4/de
Withdrawn legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B1/00—Preliminary treatment of ores or scrap
    • C22B1/14—Agglomerating; Briquetting; Binding; Granulating
    • C22B1/16—Sintering; Agglomerating
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B13/00—Making spongy iron or liquid steel, by direct processes
    • C21B13/0086—Conditioning, transformation of reduced iron ores
    • C21B13/0093—Protecting against oxidation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B11/00—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses
    • B30B11/16—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses using pocketed rollers, e.g. two co-operating pocketed rollers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/30—Feeding material to presses
    • B30B15/302—Feeding material in particulate or plastic state to moulding presses
    • B30B15/308—Feeding material in particulate or plastic state to moulding presses in a continuous manner, e.g. for roller presses, screw extrusion presses
    • 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

Definitions

  • the present invention relates to a direct-reduced iron agglomeration apparatus, and more particularly, to a direct-reduced iron agglomeration apparatus, in which a shut-off plate is installed in a feeding box, thereby obtaining production of a double screw type direct-reduced iron agglomeration apparatus, and assuring supply characteristics similar to those in a single screw type direct-reduced iron agglomeration apparatus based on the left and right sides of a roll.
  • the molten iron is manufactured by manufacturing hot compacted iron (HCl) using direct reduced iron (DRI) passing through a flow path, and loading the hot compacted iron into a gasification melting furnace.
  • HCl hot compacted iron
  • DRI direct reduced iron
  • pressure is applied to the direct reduced iron in the form of powder in a temperature range of approximately 700°C to 800°C to make lumpy reduced iron, and the reduced iron is supplied to the gasification melting furnace.
  • a feeding box of the direct-reduced iron agglomeration apparatus is installed below a loading hopper, and serves to supply direct reduced iron (DRI), which is supplied by a screw feeder from the loading hopper, between a pair of rolls.
  • DRI direct reduced iron
  • the direct-reduced iron agglomeration apparatus applies a double screw type screw feeder by changing the existing single screw type screw feeder to the double screw type screw feeder.
  • production of the direct-reduced iron agglomeration apparatus having the double screw type screw feeder is increased two times as much in comparison with production of the direct-reduced iron agglomeration apparatus having the existing single screw type screw feeder.
  • Sealing property in the single screw type screw feeder is excellent due to a closed and sealed space that is made by blocking the left and right sides of the screw by a cheek plate.
  • left and right end portions are sealed like the single screw type screw feeder, but there is no shut-off member at a middle portion between left and right screws, and as a result, there is a problem in that a manufacturing process is frequently stopped due to discharge of the direct reduced iron caused by a relatively vulnerable sealing structure during a continuous manufacturing process.
  • the present invention has been made in an effort to provide a direct-reduced iron agglomeration apparatus, in which a shut-off plate is installed in a feeding box, thereby obtaining production of a double screw type direct-reduced iron agglomeration apparatus, and assuring supply characteristics similar to those in a single screw type direct-reduced iron agglomeration apparatus based on the left and right sides of a roll.
  • An exemplary embodiment of the present invention provides a direct-reduced iron agglomeration apparatus, including:
  • the shut-off unit may be installed at a middle portion between the cheek plates.
  • a coupling hole to which the shut-off unit is separably coupled may be formed in a middle portion of an upper end portion of the feeding box.
  • the coupling hole may be formed in a narrow elongated slit shape.
  • the shut-off unit may include: a shut-off plate which is inserted into and coupled to the coupling hole of the feeding box, and blocks the direct reduced iron from being pushed out toward the middle portion of the rolls; and a stopper which is formed on an upper end portion of the shut-off plate, and stops the insertion of the shut-off plate when the shut-off plate is fully inserted into the coupling hole.
  • a curved portion which is formed in a streamlined shape and allows the shut-off plate to be easily inserted into the coupling hole, may be formed at a lower end portion of the shut-off plate.
  • the stopper may be formed to be greater than at least the coupling hole.
  • the stopper may protrude outward from both surfaces of the upper end portion of the shut-off plate in order to effectively stop the insertion of the shut-off plate.
  • the shut-off plate may have the same shape as the coupling hole.
  • the shut-off plate is installed in the feeding box, thereby obtaining production of a double screw type direct-reduced iron agglomeration apparatus, and assuring supply characteristics similar to those in a single screw type direct-reduced iron agglomeration apparatus based on the left and right sides of a roll.
  • FIG. 1 is a schematic front perspective view illustrating a direct-reduced iron agglomeration apparatus according to an exemplary embodiment of the present invention
  • FIG. 2 is a schematic side perspective view illustrating the direct-reduced iron agglomeration apparatus according to the exemplary embodiment of the present invention
  • FIG. 3 is a partially exploded perspective view illustrating the direct-reduced iron agglomeration apparatus according to the exemplary embodiment of the present invention
  • FIG. 4 is a partially coupled perspective view illustrating the direct-reduced iron agglomeration apparatus according to the exemplary embodiment of the present invention
  • FIG. 5 is a bottom perspective view of FIG. 4
  • FIG. 6 is a top plan view illustrating a feeding box of the direct-reduced iron agglomeration apparatus according to the exemplary embodiment of the present invention.
  • the direct-reduced iron agglomeration apparatus may include: a feeding box 300 which is installed above a pair of rolls 100 and 110, and supplies direct reduced iron (DRI), which is supplied by double screw feeders 200 and 210, between the pair of rolls 100 and 110;
  • DRI direct reduced iron
  • cheek plates 400 and 410 which are installed at side portions of the pair of rolls 100 and 110, respectively, and prevent the direct reduced iron from being pushed out by pressure by the pair of rolls 100 and 110 in a side direction of the rolls; and a shut-off unit 500 which is coupled to the feeding box 300, and blocks the direct reduced iron from being pushed out by pressure by the pair of rolls 100 and 110 toward a middle portion of the rolls.
  • the shut-off unit 500 may be installed at a middle portion of the feeding box 300, that is, a middle portion between the cheek plate 400 and the cheek plate 410.
  • a coupling hole 310 to which the shut-off unit 500 may be separably coupled may be formed in a middle portion of an upper end portion of the feeding box 300.
  • the coupling hole 310 may be formed in a narrow elongated slit shape so that the shut-off unit may be securely coupled to the coupling hole 310.
  • First and second supply ports 320 and 330 may be formed in the feeding box 300 so as to supply the direct reduced iron from the double screw feeders 200 and 210 to the first and second supply ports 320 and 330.
  • the shut-off unit 500 may include: a shut-off plate 510 which is inserted into and coupled to the coupling hole 310 of the feeding box 300, and blocks the direct reduced iron from being pushed out toward the middle portion of the rolls 100 and 110; and a stopper 520 which is formed on an upper end portion of the shut-off plate 510, and stops the insertion of the shut-off plate 510 when the shut-off plate 510 is fully inserted into the coupling hole.
  • the shut-off plate 510 may be formed in an approximately quadrangular shape so as to easily block the direct reduced iron, and may have the same shape as the coupling hole 310.
  • a curved portion 530 which is formed in a streamlined shape and allows the shut-off plate 510 to be easily inserted into the coupling hole 310, may be formed at a lower end portion of the shut-off plate 510.
  • the curved portion 530 may have a center identical to a center in a width direction of the shut-off plate 510, and a predetermined curvature radius so as to allow the shut-off plate 510 to be more easily inserted into the coupling hole 310.
  • the stopper 520 may be formed to be greater than at least the coupling hole 310.
  • the stopper 520 may protrude outward from both surfaces of the upper end portion of the shut-off plate 510.
  • shut-off plate 510 of the shut-off unit 500 is positioned above the coupling hole 310 of the feeding box 300, as illustrated in FIG. 7 .
  • the curved portion 530 of the shut-off unit 500 is pushed from the upper side toward the lower side of the feeding box 300, as indicated by the arrow in FIG. 8 , and inserted into the coupling hole 310, and then the shut-off plate 510 is fully inserted into and coupled to the coupling hole 310, as illustrated in FIG. 8 , and as a result, the stopper 520 of the shut-off unit 500 is caught by the upper end portion of the feeding box 300 such that the insertion of the shut-off plate 510 into the coupling hole 310 is stopped.
  • the direct reduced iron which is supplied by the double screw feeders 200 and 210, is supplied to the feeding box 300, and thereafter supplied between the pair of rolls 100 and 110 through the supply ports 320 and 300.
  • the cheek plates 400 and 410 prevent the direct reduced iron supplied between the pair of rolls 100 and 110 from being pushed out in a side direction of the rolls 100 and 110 by pressure of the pair of rolls 100 and 110 that are rotated in opposite directions.
  • shut-off plate 510 of the shut-off unit 500 blocks the direct reduced iron from being pushed out by pressure of the pair of rolls 100 and 110 toward the middle portion of the rolls 100 and 110.
  • the direct reduced iron may be blocked by the cheek plates 400 and 410 from being pushed out at both end portions of the double screw feeders 200 and 210, and the direct reduced iron may be blocked by the shut-off plate 510 of the shut-off unit 500 from being pushed out toward the middle portion of the rolls 100 and 110 at the middle portion of the double screw feeders 200 and 210.
  • shut-off unit 500 when the shut-off unit 500 is separated from the feeding box 300 after being used in a state in which the shut-off unit 500 is assembled to the feeding box 300, force is applied to the curved portion 530 of the shut-off unit 500 from the lower side toward the upper side of the shut-off unit 500 as indicated by the arrow in FIG. 9 , such that the shut-off plate 510 is separated from the coupling hole 310 of the feeding box 300 as illustrated in FIG. 9 , and as a result, the shut-off unit 500 is completely separated from the feeding box 300.
  • FIGS. 10A and 10B are views illustrating simulation results regarding whether roll force applied in a downward direction from the roll is generated uniformly in the direct-reduced iron agglomeration apparatus according to the exemplary embodiment of the present invention, which compare the case (a) in the related art in which the shut-off plate is not installed, and the case (b) in which the shut-off plate is installed.
  • a particle behavior simulation is used to analyze a conveying effect before and after the shut-off plate is installed in the feeding box, and it can be seen that as a result of calculating mutual reaction force between particles before and after the shut-off plate is installed, roll force,applied in a downward direction from the roll is generated more uniformly from side to side in the case in which the shut-off plate is installed in comparison with a case in the related art in which the shut-off plate is not installed.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Manufacturing & Machinery (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Geology (AREA)
  • Organic Chemistry (AREA)
  • Manufacture Of Metal Powder And Suspensions Thereof (AREA)
  • Powder Metallurgy (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
  • Filling Or Emptying Of Bunkers, Hoppers, And Tanks (AREA)
EP13810023.5A 2012-06-27 2013-05-15 Agglomerationsvorrichtung für direkt-reduziertes eisen Withdrawn EP2883968A4 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020120069346A KR101424609B1 (ko) 2012-06-27 2012-06-27 분환원철 괴성화 장치
PCT/KR2013/004314 WO2014003316A1 (ko) 2012-06-27 2013-05-15 분환원철 괴성화 장치

Publications (2)

Publication Number Publication Date
EP2883968A1 true EP2883968A1 (de) 2015-06-17
EP2883968A4 EP2883968A4 (de) 2016-04-20

Family

ID=49783413

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13810023.5A Withdrawn EP2883968A4 (de) 2012-06-27 2013-05-15 Agglomerationsvorrichtung für direkt-reduziertes eisen

Country Status (4)

Country Link
EP (1) EP2883968A4 (de)
KR (1) KR101424609B1 (de)
CN (1) CN104271780B (de)
WO (1) WO2014003316A1 (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101649546B1 (ko) * 2015-10-02 2016-08-19 주식회사 포스코 환원철 괴상화 장치의 치크 플레이트
CN107718676B (zh) * 2017-11-16 2024-01-19 国能龙源环保有限公司 带有多螺旋结构预压紧装置的高压成型机及其使用方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11123598A (ja) * 1997-10-21 1999-05-11 Hosokawa Micron Corp ブリケッティングマシン及びブリケットの製造方法
WO2002024440A1 (en) * 2000-09-20 2002-03-28 Reckitt Benckiser N.V. Method and apparatus for manufacturing multi-layer press molded bodies
CN1842605A (zh) * 2004-10-19 2006-10-04 Posco公司 用于制造包含直接还原铁粉的还原材料的压制铁的设备以及使用该设备制造铁水的设备
WO2012028438A1 (de) * 2010-08-28 2012-03-08 Khd Humboldt Wedag Gmbh Gekühlte seitenwand für eine rollenpresse

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001098313A (ja) * 1999-09-28 2001-04-10 Mitsubishi Heavy Ind Ltd 還元鉄製造装置
US6352573B2 (en) * 2000-03-21 2002-03-05 Midrex International B.V. Rotterdam Method for the separation and recycling of hot fines in hot briquetting of reduced iron
EP1573076B1 (de) * 2002-12-21 2008-05-21 Posco Vorrichtung zur herstellung von schmelzflüssigem eisen durch heissverdichtung von feinem, direkt reduzierten eisen und kalzinierten zusatzstoffen und verfahren zu dessen verwendung
KR101043078B1 (ko) * 2004-06-30 2011-06-21 주식회사 포스코 치크 플레이트 가압 장치 및 이를 이용한 브리켓 제조장치
KR101072490B1 (ko) * 2004-07-16 2011-10-11 주식회사 포스코 분환원철 함유 환원체의 괴성체 제조 장치 및 이를 이용한용철제조장치
KR101036640B1 (ko) * 2004-07-12 2011-05-24 주식회사 포스코 분환원철 함유 환원체의 괴성체 제조 장치 및 이를 이용한용철제조장치
KR101036645B1 (ko) * 2004-07-16 2011-05-24 주식회사 포스코 분환원철 함유 환원체의 괴성체 제조 장치 및 이를 이용한용철제조장치
KR100797829B1 (ko) * 2006-12-27 2008-01-24 주식회사 포스코 더스트 괴성체 제조 장치 및 더스트 괴성체 제조 방법
KR100929182B1 (ko) 2007-12-20 2009-12-01 주식회사 포스코 바인더리스 브리켓의 제조 방법 및 제조 장치
WO2010131753A1 (ja) * 2009-05-15 2010-11-18 株式会社神戸製鋼所 高密度還元鉄の製造方法および高密度還元鉄の製造装置

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11123598A (ja) * 1997-10-21 1999-05-11 Hosokawa Micron Corp ブリケッティングマシン及びブリケットの製造方法
WO2002024440A1 (en) * 2000-09-20 2002-03-28 Reckitt Benckiser N.V. Method and apparatus for manufacturing multi-layer press molded bodies
CN1842605A (zh) * 2004-10-19 2006-10-04 Posco公司 用于制造包含直接还原铁粉的还原材料的压制铁的设备以及使用该设备制造铁水的设备
WO2012028438A1 (de) * 2010-08-28 2012-03-08 Khd Humboldt Wedag Gmbh Gekühlte seitenwand für eine rollenpresse

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
None *
See also references of WO2014003316A1 *

Also Published As

Publication number Publication date
CN104271780B (zh) 2016-05-11
EP2883968A4 (de) 2016-04-20
KR20140001524A (ko) 2014-01-07
CN104271780A (zh) 2015-01-07
KR101424609B1 (ko) 2014-07-31
WO2014003316A1 (ko) 2014-01-03

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