EP1017859B1 - Verfahren zur erzeugung von eisenschwamm - Google Patents

Verfahren zur erzeugung von eisenschwamm Download PDF

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Publication number
EP1017859B1
EP1017859B1 EP98951258A EP98951258A EP1017859B1 EP 1017859 B1 EP1017859 B1 EP 1017859B1 EP 98951258 A EP98951258 A EP 98951258A EP 98951258 A EP98951258 A EP 98951258A EP 1017859 B1 EP1017859 B1 EP 1017859B1
Authority
EP
European Patent Office
Prior art keywords
delivery
process according
shaft
reduction
sponge iron
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.)
Expired - Lifetime
Application number
EP98951258A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1017859A1 (de
Inventor
Hado Heckmann
Georg Schleich
Wolfgang Günther
Kurt Wieder
Wilhelm Stastny
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.)
Primetals Technologies Austria GmbH
Deutsche Voest Alpine Industrieanlagenbau GmbH
Original Assignee
Voest Alpine Industrienlagenbau GmbH
Deutsche Voest Alpine Industrieanlagenbau GmbH
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 Voest Alpine Industrienlagenbau GmbH, Deutsche Voest Alpine Industrieanlagenbau GmbH filed Critical Voest Alpine Industrienlagenbau GmbH
Publication of EP1017859A1 publication Critical patent/EP1017859A1/de
Application granted granted Critical
Publication of EP1017859B1 publication Critical patent/EP1017859B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B1/00—Shaft or like vertical or substantially vertical furnaces
    • F27B1/10—Details, accessories, or equipment peculiar to furnaces of these types
    • F27B1/21—Arrangements of devices for discharging
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D3/00—Charging; Discharging; Manipulation of charge
    • F27D3/0033—Charging; Discharging; Manipulation of charge charging of particulate material
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D3/00—Charging; Discharging; Manipulation of charge
    • F27D3/08—Screw feeders; Screw dischargers

Definitions

  • the invention relates to a method according to the preamble of claim 1.
  • EP 0 166 679 A1 discloses an arrangement of one Smelting gasifier and a direct reduction shaft furnace with a bed of lumpy iron oxide, where the shaft furnace has a floor to support the pouring column, discharge openings in the floor for Discharge of the iron sponge particles and at least one Inlet for the reducing gas supplied by the carburetor in the lower section of the pouring column. Since the reducing gas is very dust-laden, there is a risk of blockage of the free spaces in the column with the consequence of a corresponding increase in volume resistance for the reducing gas.
  • Screw conveyors are intended for permanent mutual reciprocating movement of the particles the bed in the inlet for the reducing gas adjacent, through which the reducing gas flows Area, and continues to be at the opposite At least ends of the screw conveyors in the ground a discharge opening for the sponge iron particles is arranged.
  • the screw conveyors can be driven in this way done that either the individual snails in succession rotated in both directions or a combination of constantly outward and snails continuously conveying inside is.
  • Both discharge openings are opposite in this arrangement shielded the pouring column; the outer through a ring apron and the inner one by a cone.
  • the cone ends just above the screw conveyor or it contains passage openings into which the inner ones Grip the ends of the radially arranged screws. This ensures that the sponge iron not directly, i.e. without additional funding bodies reaches the discharge openings, but only transported to these by means of the screw conveyors can be. This is necessary to the back and forth to produce the resulting movement of the sponge iron.
  • the iron sponge sinking downwards is advantageous by one arranged between two discharge elements and rising above this Guide device to the side of the discharge elements and directed radially to the additional discharge opening. This increases the steering of the furniture material to the discharge organs and the additional Discharge opening reached.
  • a guide device with a Edge of the additional discharge opening diagonally upwards extending to the inner wall of the reduction shaft used upper edge, with the guide device downwards and radially outwards to Width of the lateral space can expand between the discharge organs. This ensures that the entire furniture material evenly sinks down until it's discharged becomes.
  • a reduction shaft with one is advantageous located below the additional discharge opening Manhole with the same or down tapering or expanding diameter whose lower end is closed and in which above of the bottom at least one other radially acting Discharge device for the sponge iron is arranged, used.
  • the figures show the part of the reduction shaft below the bustle level, i.e. the level in which the reducing gas is blown into the shaft to climb up through the Möller and the conversion of iron oxides into sponge iron cause.
  • the reduction shaft has a cylindrical or in areas conical jacket 1 on the bottom Ends in the ground 2.
  • a discharge organ in the form a screw conveyor 3 out.
  • the screw conveyors 3 transport the sunken to the floor 2 Möller radially outwards so that it is in each case Downpipe 4 passes through which it, for example into a melter gasifier generating the reducing gas to be led. This discharge of Möller enables the sinking of the furniture in the reduction shaft.
  • the radial screw conveyors 3 only extend over part of the radius of the reduction shaft, so that the snail heads a distance from the Have shaft axis and a circular area between form.
  • the bottom 2 contains one of these circular areas corresponding middle discharge opening, which in a cylindrical shaft 5 with respect to that of Reduction shaft corresponding to a reduced diameter transforms.
  • each two screw conveyors 3 a wedge-shaped guide element 6.
  • the front or upper edge of the guide elements extends from the edge of the middle discharge opening rising up to the inner wall of the jacket 1, the slope angle of this edge compared to the Vertical is about 25 to 40 °.
  • the angle of inclination of the side surfaces of the guide elements 6 is approximately in the range of 5 to 15 °.
  • the guide elements 6 guide the sinking Möller so to the middle discharge opening in the bottom 2 as well to the screw conveyors 3 that practically the whole Möller is carried out unhindered, that means that The occurrence of "dead men" is prevented.
  • the part of the Möllers reaches in the embodiment according to FIGS. 1 and 2 in the shaft 5 closed at the bottom To remove the material from this are immediate above the bottom of the shaft 5 two each other diametrically opposite discharge openings are provided, through which each also a screw conveyor 7 is passed through for discharge to a downpipe 8, which, for example, in the melter leads. Because the diameter of the shaft 5 is significant is smaller than that of the reduction shaft the screw conveyors 7 each over the middle of the Shaft 5 out, so that everyone in the shaft 5 entering Möller without stowage to the downpipes 8 is transported.
  • Discharge elements provided at the bottom of the shaft 5 be, for example, a rotary valve or a Bunker Anlagenr.
  • the outlet pipe 12 is centrally through a coal liner 13 in the head of a melter gasifier 14 guided.
  • the coal liner 13 comprises a vertical one Feed pipe from a coal bunker and a two-stage Screw conveyor. Because of the concentric Introduction of furniture material or sponge iron and Coal in the head of the melter 14 is the Mixing promoted by this, so that Melting the sponge iron and generating the Reducing gas in the melter 14 improved become.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacture Of Iron (AREA)
  • Furnace Charging Or Discharging (AREA)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
  • Screw Conveyors (AREA)
  • Vertical, Hearth, Or Arc Furnaces (AREA)
  • Mixers Of The Rotary Stirring Type (AREA)
  • Compounds Of Iron (AREA)
  • Processing Of Solid Wastes (AREA)
  • Manufacture And Refinement Of Metals (AREA)
EP98951258A 1997-09-02 1998-08-26 Verfahren zur erzeugung von eisenschwamm Expired - Lifetime EP1017859B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19739443A DE19739443C2 (de) 1997-09-02 1997-09-02 Vorrichtung zur Erzeugung von Eisenschwamm
DE19739443 1997-09-02
PCT/DE1998/002581 WO1999011825A1 (de) 1997-09-02 1998-08-26 Vorrichtung zur erzeugung von eisenschwamm

Publications (2)

Publication Number Publication Date
EP1017859A1 EP1017859A1 (de) 2000-07-12
EP1017859B1 true EP1017859B1 (de) 2002-05-08

Family

ID=7841697

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98951258A Expired - Lifetime EP1017859B1 (de) 1997-09-02 1998-08-26 Verfahren zur erzeugung von eisenschwamm

Country Status (17)

Country Link
US (1) US6391249B1 (xx)
EP (1) EP1017859B1 (xx)
JP (1) JP2001515137A (xx)
KR (1) KR100563963B1 (xx)
CN (1) CN1080316C (xx)
AT (1) ATE217352T1 (xx)
AU (1) AU748791B2 (xx)
BR (1) BR9811435A (xx)
CA (1) CA2301266A1 (xx)
DE (2) DE19739443C2 (xx)
ID (1) ID25550A (xx)
PL (1) PL338798A1 (xx)
SK (1) SK2892000A3 (xx)
TR (1) TR200000572T2 (xx)
TW (1) TW426740B (xx)
WO (1) WO1999011825A1 (xx)
ZA (1) ZA987742B (xx)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008026835A1 (de) 2008-06-05 2009-12-17 Kurt Himmelfreundpointner Verfahren und Vorrichtung zum Zufördern von förderfähigen Materialien zu Reaktionsöfen
CN102032789B (zh) * 2008-11-26 2012-09-12 中冶焦耐工程技术有限公司 一种密封型卸料装置的使用方法
WO2011001282A2 (en) 2009-06-29 2011-01-06 Bairong Li Metal reduction processes, metallurgical processes and products and apparatus
KR101752606B1 (ko) 2016-09-28 2017-07-11 (주)파인스 Finex 공장 유동환원로 작업용 스크류컨베이어 장치

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US681609A (en) * 1900-03-19 1901-08-27 Gen Metal Reduction Company Ltd Process of treating zinc-bearing complex ores.
DE2312538A1 (de) 1973-03-14 1974-09-19 Peter Dipl Ing Knoch Schachtofen fuer die direktreduktion
SU1129239A1 (ru) * 1982-04-26 1984-12-15 Химико-металлургический институт АН КазССР Устройство дл термохимической обработки сыпучих материалов газовым потоком
DE3422185A1 (de) * 1984-06-12 1985-12-12 Korf Engineering GmbH, 4000 Düsseldorf Anordnung aus einem vergaser und direktreduktionsofen
AT387037B (de) * 1987-06-15 1988-11-25 Voest Alpine Ag Schachtofen zur thermischen behandlung von einsatzstoffen mit gasfoermigen medien
DE19623246C1 (de) * 1996-05-30 1997-10-02 Voest Alpine Ind Anlagen Verfahren und Vorrichtung zur Beschickung eines Einschmelzvergasers mit Vergasungsmitteln und Eisenschwamm

Also Published As

Publication number Publication date
KR100563963B1 (ko) 2006-03-29
DE19739443A1 (de) 1999-03-04
ZA987742B (en) 1998-11-26
SK2892000A3 (en) 2000-09-12
ATE217352T1 (de) 2002-05-15
US6391249B1 (en) 2002-05-21
WO1999011825A1 (de) 1999-03-11
TR200000572T2 (tr) 2000-11-21
BR9811435A (pt) 2000-08-22
PL338798A1 (en) 2000-11-20
JP2001515137A (ja) 2001-09-18
DE19739443C2 (de) 2000-02-10
AU748791B2 (en) 2002-06-13
CN1269839A (zh) 2000-10-11
EP1017859A1 (de) 2000-07-12
CN1080316C (zh) 2002-03-06
CA2301266A1 (en) 1999-03-11
TW426740B (en) 2001-03-21
AU9736098A (en) 1999-03-22
DE59804077D1 (de) 2002-06-13
KR20010023482A (ko) 2001-03-26
ID25550A (id) 2000-10-12

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