EP0762068B1 - Verfahren zum Betreiben eines Sauerstoff-verzehrenden metallurgischen Schachtofens - Google Patents

Verfahren zum Betreiben eines Sauerstoff-verzehrenden metallurgischen Schachtofens Download PDF

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Publication number
EP0762068B1
EP0762068B1 EP96112619A EP96112619A EP0762068B1 EP 0762068 B1 EP0762068 B1 EP 0762068B1 EP 96112619 A EP96112619 A EP 96112619A EP 96112619 A EP96112619 A EP 96112619A EP 0762068 B1 EP0762068 B1 EP 0762068B1
Authority
EP
European Patent Office
Prior art keywords
oxygen
furnace
shaft
delivery medium
gases
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
EP96112619A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0762068A1 (de
Inventor
Manfred Dr.-Ing. Rossmann
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.)
Linde GmbH
Original Assignee
Linde Technische Gase 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
Priority claimed from DE19622695A external-priority patent/DE19622695A1/de
Application filed by Linde Technische Gase GmbH filed Critical Linde Technische Gase GmbH
Publication of EP0762068A1 publication Critical patent/EP0762068A1/de
Application granted granted Critical
Publication of EP0762068B1 publication Critical patent/EP0762068B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • 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
    • F27B1/16—Arrangements of tuyeres
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B11/00—Making pig-iron other than in blast furnaces
    • C21B11/02—Making pig-iron other than in blast furnaces in low shaft furnaces or shaft furnaces

Definitions

  • the invention relates to a method for operating an oxygen-consuming Shaft furnace, in particular a cupola furnace, for the production of metals, especially of cast iron, and metal alloys, in which the furnace shaft with a corresponding insert is filled or continuously or discontinuously filled and the bottom of the cast iron melt is removed, and the Oven shaft, in particular in its lower area containing oxygen Gas mixture is supplied by means of at least one injector nozzle, where as Pumped medium uses oxygen or oxygen mixed with other gases becomes.
  • DE-OS 41 22 381 describes a generic method for operating a Cupola for the production of cast iron known.
  • the furnace shaft in the lower area is wind, that is air, and if necessary additionally oxygen. It is necessary to feed wind into the furnace shaft because this enables the combustion of the coke pack.
  • the wind is fed via large fans.
  • oxygen is added to the wind or the Coke combustion is intensified by supplying oxygen via oxygen lances.
  • a fan is always required to direct the wind to the combustion.
  • air blowers are comparatively expensive.
  • cycle gas processes are also known - see, for example, DE-A-43 01 322 -, the main feature of which is the return of the furnace gas from the chemically neutral shaft zone in the combustion zone.
  • the use of such a nozzle burner has done so far used costly blowers superfluous.
  • the object of the present invention is to provide a method for operating an oxygen-consuming device Shaft furnace, in particular a cupola furnace, and one Shaft furnace, in particular to specify a cupola furnace, or the said Avoids disadvantages.
  • the oxygen-containing gas mixture or the oxygen Tank systems is provided, pumps or compressors are unnecessary.
  • the oxygen-containing gas mixture is advantageously supplied or the wind in the furnace shaft in the area of the wind zone of the furnace shaft, there in this area of the furnace shaft the actual combustion, for the purpose the supply of the oxygen-containing gas mixture or the wind takes place, he follows. This also improves the metallurgy of the melting process. The resulting savings in C, Si and Mn carrier materials result to reduce the class costs.
  • the Pumped medium is a mixture of oxygen and air.
  • the combustion temperature can be reduced regulated, checked and, accordingly, within the furnace shaft the current parameters of feed composition, cast iron / Slag, etc., can be varied.
  • the combustion temperature in a large range and according to the desired reaction or Set parameters.
  • the amount of air sucked in by the pumped medium is, according to another advantageous embodiment of the method according to the invention, between the 0.1- and 10 times the amount of fluid handled.
  • the shaft furnace has other gases via the injector nozzle (s), in particular carbon dioxide or carbon monoxide can be supplied.

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)
  • Vertical, Hearth, Or Arc Furnaces (AREA)
  • Heat Treatment Of Articles (AREA)
  • Manufacture Of Iron (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Golf Clubs (AREA)
  • Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
EP96112619A 1995-08-28 1996-08-05 Verfahren zum Betreiben eines Sauerstoff-verzehrenden metallurgischen Schachtofens Expired - Lifetime EP0762068B1 (de)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE19531604 1995-08-28
DE19531604 1995-08-28
DE19622695A DE19622695A1 (de) 1995-08-28 1996-06-05 Verfahren zum Betreiben eines Sauerstoff-verzehrenden Schachtofens und Schachtofen zum Durchführen des Verfahrens
DE19622695 1996-06-05

Publications (2)

Publication Number Publication Date
EP0762068A1 EP0762068A1 (de) 1997-03-12
EP0762068B1 true EP0762068B1 (de) 2000-11-22

Family

ID=26018062

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96112619A Expired - Lifetime EP0762068B1 (de) 1995-08-28 1996-08-05 Verfahren zum Betreiben eines Sauerstoff-verzehrenden metallurgischen Schachtofens

Country Status (6)

Country Link
EP (1) EP0762068B1 (cs)
AT (1) ATE197734T1 (cs)
CZ (1) CZ292393B6 (cs)
ES (1) ES2153924T3 (cs)
HU (1) HUP9602352A3 (cs)
PL (1) PL183679B1 (cs)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007025663A1 (de) * 2007-06-01 2008-12-04 Linde Ag Verfahren zur gesteuerten Koksumsetzung in Kupolöfen
DE102008048779A1 (de) 2008-09-24 2010-03-25 Linde Ag Schachtofen mit Gichtgasrückführung
DE102009006573A1 (de) 2009-01-29 2010-08-05 Linde Aktiengesellschaft Verfahren zum Schmelzen von Einsatzmaterial in einem Kupolofen
DE102011115450A1 (de) 2011-10-08 2013-04-11 Linde Aktiengesellschaft Schachtofen mit Gichtgasrückführung
DE102012017066A1 (de) 2012-08-28 2014-03-06 fusoris engineering GmbH & Co. KG Schachtofen und Verfahren zur Gichtgasnachverbrennung

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4122381A1 (de) * 1991-07-05 1993-01-07 Linde Ag Verfahren zum betreiben eines kupolofens
DE4301322C2 (de) * 1993-01-20 1994-12-15 Feustel Hans Ulrich Dipl Ing Verfahren und Einrichtung zum Schmelzen von eisenmetallischen Werkstoffen
DE4338985C2 (de) * 1993-11-15 1996-07-18 Hans Ulrich Dipl Ing Feustel Kokslos betriebener Herd-Schacht-Ofen
WO1996000798A1 (de) * 1994-06-29 1996-01-11 Ingitec Gbr Düsensystem für eine einrichtung zum schmelzen von eisenmetallischen werkstoffen in einem koksbeheizten kupolofen

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
Firmenprospekt: Linde-HIGHJET-Verfahren *

Also Published As

Publication number Publication date
PL183679B1 (pl) 2002-06-28
HU9602352D0 (en) 1996-10-28
ES2153924T3 (es) 2001-03-16
ATE197734T1 (de) 2000-12-15
PL315238A1 (en) 1997-03-03
CZ224396A3 (en) 1997-03-12
EP0762068A1 (de) 1997-03-12
HUP9602352A2 (hu) 1998-04-28
HUP9602352A3 (en) 1999-03-01
CZ292393B6 (cs) 2003-09-17

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