EP0081475A2 - Dispositif de déchargement d'un matériau chaud d'un récipient, en particulier d'éponge de fer d'un four à cuve - Google Patents

Dispositif de déchargement d'un matériau chaud d'un récipient, en particulier d'éponge de fer d'un four à cuve Download PDF

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Publication number
EP0081475A2
EP0081475A2 EP82890173A EP82890173A EP0081475A2 EP 0081475 A2 EP0081475 A2 EP 0081475A2 EP 82890173 A EP82890173 A EP 82890173A EP 82890173 A EP82890173 A EP 82890173A EP 0081475 A2 EP0081475 A2 EP 0081475A2
Authority
EP
European Patent Office
Prior art keywords
discharge
grate
grate bars
cooling liquid
inner tube
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.)
Granted
Application number
EP82890173A
Other languages
German (de)
English (en)
Other versions
EP0081475B1 (fr
EP0081475A3 (en
Inventor
Ernst Oberndorfer
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.)
Voestalpine AG
Original Assignee
Voestalpine AG
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 Voestalpine AG filed Critical Voestalpine AG
Publication of EP0081475A2 publication Critical patent/EP0081475A2/fr
Publication of EP0081475A3 publication Critical patent/EP0081475A3/de
Application granted granted Critical
Publication of EP0081475B1 publication Critical patent/EP0081475B1/fr
Expired 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
    • C21B13/02—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 specially adapted for furnaces of these types
    • F27B1/21—Arrangements of devices for discharging

Definitions

  • the invention relates to a device for discharging a hot material from a standing container, in particular sponge iron from a shaft furnace, with a drivable discharge tool forming the container bottom and having flow channels for a cooling liquid.
  • the invention is therefore based on the object of improving a discharge device for hot material of the type described at the outset in such a way that a simple discharge can be ensured with simple constructional means over the container cross section.
  • the discharge tool consists of a grate of parallel, cross-sectionally non-circular grate bars that can be driven to swing about their longitudinal axis, and that the hollow grate bars for cooling liquid guidance enclose an inner tube with a radial distance between them and the annular space formed by the grate bar jacket is connected through at least one passage opening.
  • the inner tube enclosed by the grate bar jacket is also filled with coolant, which must also evaporate when the coolant supply is interrupted before the grate bars can overheat.
  • the inner tube acts not only in this regard as a coolant reservoir with the advantage of an increased leveling out of the coolant temperature, but can also be used for supporting functions if the grate bar jacket is connected to the inner tube accordingly.
  • the cooling liquid supplied through the inner tube and returned in countercurrent through the annular space between the inner tube and the rod jacket for discharge results in a particularly high level Uniformity with regard to the grate bar temperature, because there is an additional temperature exchange between the supplied and the removed coolant via the inner tube. This practically avoids different thermal expansions over the length of the grate bars.
  • the connection of the discharge line for the cooling liquid can advantageously be provided in the upper apex region of the grate bars. Particularly favorable conditions result if the connection for the discharge of the cooling liquid forms a collecting space tapering upwards for the discharge, via which steam inevitably flows into the discharge line.
  • the discharge device for hot sponge iron which forms the bottom of a shaft furnace (not shown in detail), essentially consists of a grate 1 made of parallel grate bars 2 which are rotatably mounted in a support frame 3.
  • bearings 4 are provided in the frame 3, the arrangement being such that the bearings 4 of adjacent grate bars 2 are offset from one another in the direction of the longitudinal axis of the grate bars approximately by the width of the bearing, in order to be able to arrange the grate bars 2 directly next to one another.
  • the grate bars 2 have a hollow grate bar jacket 5, which is supported on both ends by two stub axles 6 held in the bearings 4.
  • axle stubs Jn6 has a central connection bore 7 for a feed line 8 for a cooling liquid, usually water, which passes through the connection bore 7 into an inner tube 9 which, according to FIG. 2, is connected tightly to the axle stub 6 having the connection bore 7 and with radial distance from the grate bar jacket 5 is enclosed.
  • the inner tube 9 is connected via spacers 10 to the jacket 5 of the grate bars 2, so that there is a composite body composed of the grate bar jacket 5 and the inner tube 9 with a comparatively high bending strength.
  • the end of the inner tube 9 opposite the stub axle 6 with the connection bore 7 is open and is consequently connected to the annular space 12 between the inner tube 9 and the grate bar jacket 5 via the passage opening 11 thereby obtained.
  • This annular space 12 opens out via a connection 13 provided in the stub shaft 6 with the connection bore 7 in an Ab line 14 for the cooling liquid, which flows back in countercurrent through the annular space 12.
  • the grate bars 2 are driven in a simple manner via crank arms 15 which are clamped to the stub axles 6 and which are articulated on push rods 16.
  • the discharge quantity can be dosed via the vibration range.
  • connection 13 provided in the upper apex area of the grate bars 2 for the discharge 14 of the cooling liquid forms a collecting space 17 which tapers upward towards the discharge, as is indicated in FIG. 4. In this way the evacuation of vapor bubbles can be ensured without fear of accumulation of vapor bubbles in dead spaces.
  • the grate bars Since in the basic position of the grate bars 2 a discharge of the goods must be prevented, the grate bars must be arranged closely next to one another, which greatly limits the space available on the side. For this. Basically, the bearings 4 for the grate bars are arranged offset from one another in the direction of the grate bars. For the same considerations, the connection for the coolant is alternately on the opposite ends of the grate bars, as can be clearly seen in FIG. 1.
  • the device shown for discharging hot sponge iron from a shaft furnace can of course also be used for discharging other hot material from a container if passage of this material is ensured by the discharge gaps that result between them when the grate bars are driven.
  • the thermal load caused by the hot material is kept within acceptable limits by the cooling which can be achieved and is uniform over the length of the grate.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Metallurgy (AREA)
  • Manufacturing & Machinery (AREA)
  • General Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Organic Chemistry (AREA)
  • Rollers For Roller Conveyors For Transfer (AREA)
  • Manufacture Of Iron (AREA)
  • Vertical, Hearth, Or Arc Furnaces (AREA)
  • Muffle Furnaces And Rotary Kilns (AREA)
  • Furnace Charging Or Discharging (AREA)
EP82890173A 1981-12-07 1982-11-23 Dispositif de déchargement d'un matériau chaud d'un récipient, en particulier d'éponge de fer d'un four à cuve Expired EP0081475B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT0523081A AT373624B (de) 1981-12-07 1981-12-07 Vorrichtung zum austragen eines heissen gutes aus einem stehenden behaelter, insbesondere von eisen- schwamm aus einem schachtofen
AT5230/81 1981-12-07

Publications (3)

Publication Number Publication Date
EP0081475A2 true EP0081475A2 (fr) 1983-06-15
EP0081475A3 EP0081475A3 (en) 1983-08-17
EP0081475B1 EP0081475B1 (fr) 1986-07-02

Family

ID=3573439

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82890173A Expired EP0081475B1 (fr) 1981-12-07 1982-11-23 Dispositif de déchargement d'un matériau chaud d'un récipient, en particulier d'éponge de fer d'un four à cuve

Country Status (5)

Country Link
US (1) US4407489A (fr)
EP (1) EP0081475B1 (fr)
JP (1) JPS6046353B2 (fr)
AT (1) AT373624B (fr)
DE (1) DE3271900D1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016112969A1 (de) 2016-07-14 2018-01-18 Thyssenkrupp Ag Austragsvorrichtung für einen Schachtofen und Verfahren zum Austragen von Brenngut aus einem Schachtofen
CN110392486A (zh) * 2019-07-24 2019-10-29 苏州创峰光电科技有限公司 输送轴套及电路板湿制程设备

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4725309A (en) * 1986-03-17 1988-02-16 Hylsa, S.A. Method and apparatus for producing hot direct reduced iron
US5409197A (en) * 1993-02-08 1995-04-25 Davis; Michael Cooling member for blast furnace tap opening
IT1310772B1 (it) * 1999-09-06 2002-02-22 Danieli Off Mecc Forno per la riduzione diretta di ossidi di ferro
DE102009021921B3 (de) * 2009-05-19 2010-06-17 Beteiligungen Sorg Gmbh & Co. Kg Vorrichtung und Verfahren zum Erzeugen von Glasschmelzen mit einem Schmelzschacht
JP2014062301A (ja) * 2012-09-21 2014-04-10 Kobe Steel Ltd 還元鉄冷却装置及び還元鉄冷却方法

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2301791A (en) * 1940-05-25 1942-11-10 Laurence P Pitre Calcining apparatus
DE829423C (de) * 1949-04-25 1952-01-24 Humphreys & Glasgow Ltd Anordnung zum Abfuehren von Schuettgut aus einem Behaelter
DE1531015A1 (de) * 1967-06-30 1969-07-31 Rheinstahl Wanheim Gmbh Behaelter zum Trocknen,Konservieren und Lagern von Getreide u.dgl.
US3704011A (en) * 1971-08-12 1972-11-28 Mintech Corp Discharge mechanism for shaft kiln
DE2209258C3 (de) 1972-02-26 1975-02-13 Thyssen Niederrhein Ag Huetten- Und Walzwerke, 4200 Oberhausen Austrageinrichtung für Eisenschwamm an Schachtöfen für die Direktreduktion von Eisenerzen
IT1029175B (it) * 1975-04-28 1979-03-10 Kinglor Metor Spa Estrattore di spugna di ferro da storte

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016112969A1 (de) 2016-07-14 2018-01-18 Thyssenkrupp Ag Austragsvorrichtung für einen Schachtofen und Verfahren zum Austragen von Brenngut aus einem Schachtofen
WO2018010995A1 (fr) 2016-07-14 2018-01-18 Thyssenkrupp Industrial Solutions Ag Dispositif d'extraction pour four à cuve et procédé permettant d'extraire un produit cuit d'un four à cuve
CN110392486A (zh) * 2019-07-24 2019-10-29 苏州创峰光电科技有限公司 输送轴套及电路板湿制程设备

Also Published As

Publication number Publication date
JPS58104107A (ja) 1983-06-21
AT373624B (de) 1984-02-10
JPS6046353B2 (ja) 1985-10-15
US4407489A (en) 1983-10-04
EP0081475B1 (fr) 1986-07-02
ATA523081A (de) 1983-06-15
EP0081475A3 (en) 1983-08-17
DE3271900D1 (en) 1986-08-07

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