EP0383184A1 - Procédé pour diminuer le dégagement de fumées et l'entrée d'air libre dans la région de coulée d'un haut fourneau - Google Patents

Procédé pour diminuer le dégagement de fumées et l'entrée d'air libre dans la région de coulée d'un haut fourneau Download PDF

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Publication number
EP0383184A1
EP0383184A1 EP19900102432 EP90102432A EP0383184A1 EP 0383184 A1 EP0383184 A1 EP 0383184A1 EP 19900102432 EP19900102432 EP 19900102432 EP 90102432 A EP90102432 A EP 90102432A EP 0383184 A1 EP0383184 A1 EP 0383184A1
Authority
EP
European Patent Office
Prior art keywords
blast furnace
reduction
snow
pig iron
region
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
EP19900102432
Other languages
German (de)
English (en)
Other versions
EP0383184B1 (fr
Inventor
Dieter Dr.-Ing. Fünders
Harald Winter
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.)
Intracon Handelsgesellschaft fur Industriebedarf
LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude
Original Assignee
Intracon Handelsgesellschaft fur Industriebedarf Mbh
LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6374060&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0383184(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Intracon Handelsgesellschaft fur Industriebedarf Mbh, LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude filed Critical Intracon Handelsgesellschaft fur Industriebedarf Mbh
Priority to AT9090102432T priority Critical patent/ATE105588T1/de
Publication of EP0383184A1 publication Critical patent/EP0383184A1/fr
Application granted granted Critical
Publication of EP0383184B1 publication Critical patent/EP0383184B1/fr
Anticipated expiration legal-status Critical
Revoked legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/10—Supplying or treating molten metal
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B7/00—Blast furnaces
    • C21B7/14—Discharging devices, e.g. for slag
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
    • C21C7/0037—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00 by injecting powdered material

Definitions

  • the invention relates to a method according to the preamble of the patent claim for reducing the dust emission and the free air access in the tapping channel of a blast furnace and, if necessary, the further conveying and decanting devices for the liquid material tapped from the blast furnace until the bed is reached.
  • Liquid nitrogen is cryogenic. This requires extensive safety measures regarding storage and handling. Furthermore, the cooling effect is too intense if very special precautionary measures are not taken. Unfortunately, however, the use of liquid nitrogen also leads to nitriding of the pig iron. However, this has an undesirable influence on the quality of the steel material and runs counter to efforts in the blast furnace and steel sector to strive for an ever lower content of dissolved nitrogen in the future.
  • the invention has for its object to achieve a reduction in dust emissions in the tapping area of a blast furnace up to the casting bed while reducing the free air access and without increasing the metallurgical nitrogen uptake.
  • the invention consists in a method for reducing the dust emission and free air access in the tapping channel of a blast furnace, the subsequent tipping channel, possibly the subsequent torpedo pan or in the area of the pouring bed when emptying the torpedo pan in that CO2 snow and / or CO2 Gas is applied to the liquid pig iron or ferromanganese and / or is introduced into the said channels or vessels before and / or when it comes into contact with the liquid pig iron / ferromanganese.
  • a simple advantageous possibility of applying the CO2 snow or a mixture of CO2 snow and CO2 gas consists in the use of one or more cannons which, in the course of the tapping channel, tipping channel, torpedo pan and / or pouring bed, onto the molten pig iron or the slag can be abandoned.
  • snow-like and gaseous carbonic acid CO2
  • the CO2 snow By feeding snow-like and gaseous carbonic acid (CO2), for example by means of a special cannon, both directly on the tapping side and in several places along the channel, the CO2 snow floats on the slag or pig iron until it enters the tipping channel. Evaporating carbonic acid continuously releases new gaseous carbonic acid, which lowers the partial pressure of harmful atmospheric oxygen and nitrogen.
  • CO2 snow-like and gaseous carbonic acid
  • the pouring jet at the transition of the pig iron from the tapping channel to the tipping channel and also during the transition from the tipping channel to the torpedo pan increases the specific surface area of the pig iron many times over. So far, there has been an inevitable intensification of the oxidation and dust development as well as increased nitriding.
  • the gaseous CO2 displaces the harmful atmospheric oxygen and nitrogen, if at the same time snow-like carbonic acid is added to both the liquid pig iron within the tipping channel and the pouring stream from the pig iron channel to the tipping channel.
  • a combined use of gaseous and snow-like carbonic acid can also bring about a significant improvement in this area, especially if both the casting chamber and the entire casting bed are protected against the free entry of air by releasing CO2 snow or gas.
EP90102432A 1989-02-14 1990-02-07 Procédé pour diminuer le dégagement de fumées et l'entrée d'air libre dans la région de coulée d'un haut fourneau Revoked EP0383184B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT9090102432T ATE105588T1 (de) 1989-02-14 1990-02-07 Verfahren zur reduzierung von staubemission und freiem luftzutritt im abstichbereich eines hochofens.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3904415A DE3904415C1 (fr) 1989-02-14 1989-02-14
DE3904415 1989-02-14

Publications (2)

Publication Number Publication Date
EP0383184A1 true EP0383184A1 (fr) 1990-08-22
EP0383184B1 EP0383184B1 (fr) 1994-05-11

Family

ID=6374060

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90102432A Revoked EP0383184B1 (fr) 1989-02-14 1990-02-07 Procédé pour diminuer le dégagement de fumées et l'entrée d'air libre dans la région de coulée d'un haut fourneau

Country Status (8)

Country Link
US (1) US5683652A (fr)
EP (1) EP0383184B1 (fr)
JP (1) JPH02282409A (fr)
AT (1) ATE105588T1 (fr)
CA (1) CA2010040A1 (fr)
DD (1) DD292025A5 (fr)
DE (2) DE3904415C1 (fr)
ES (1) ES2052985T3 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1992007099A1 (fr) * 1990-10-20 1992-04-30 Klöckner Stahl Gmbh Dispositif d'inertisation de cuves de coulee pour le transport de metaux en fusion
US5196072A (en) * 1990-12-12 1993-03-23 Liquid Air Corporation Method and apparatus for controlling metal oxide fume generation during subdivision of a body containing metal values
AU644694B2 (en) * 1990-10-20 1993-12-16 Klockner Stahl Gmbh Apparatus and method for delivering inert gas into a molten metal transportation vessel
US5343491A (en) * 1991-11-28 1994-08-30 Carbagas And Von Roll Ag Method of suppressing dust and fumes during electric steel production
WO1998021373A2 (fr) * 1996-11-08 1998-05-22 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Procede pour limiter les emanations de vapeur pendant le transfert de metal liquide
US9107906B1 (en) 2014-10-28 2015-08-18 Adma Biologics, Inc. Compositions and methods for the treatment of immunodeficiency
US10259865B2 (en) 2017-03-15 2019-04-16 Adma Biologics, Inc. Anti-pneumococcal hyperimmune globulin for the treatment and prevention of pneumococcal infection

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6460742B1 (en) 1989-02-14 2002-10-08 L'air Liquide Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Process for reducing fume emissions during molten metal transfer
DE19532040C2 (de) * 1995-08-31 1999-05-27 Schloemann Siemag Ag Vorrichtung zum Flüssigmetall-Transport in der Gießhalle eines Schachtofens und Verfahren zum Betrieb dieser Vorrichtung
DE102011008894A1 (de) 2011-01-19 2012-07-19 Air Liquide Deutschland Gmbh Verfahren und Düse zur Unterdrückung einer Entwicklung von eisenhaltigem Dampf
CN102692327B (zh) * 2011-03-22 2014-06-18 上海宝钢设备检修有限公司 熔融还原炼铁炉关键设备综合试验方法

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2409097A1 (fr) * 1977-11-21 1979-06-15 Lodge Cottrell Ltd Procede et installation de lutte contre les fumees d'une matiere en fusion
EP0071359A1 (fr) * 1981-07-23 1983-02-09 Uss Engineers And Consultants, Inc. Procédé et appareil éliminant des émanations gazeuses d'un bain métallique
EP0154585A2 (fr) * 1984-02-24 1985-09-11 Canadian Liquid Air Ltd Air Liquide Canada Ltee Procédé de coulée d'un métal liquide
EP0196242A1 (fr) * 1985-02-21 1986-10-01 Canadian Liquid Air Ltd Air Liquide Canada Ltee Procédé de protection d'un jet de coulee d'acier
FR2607829A1 (fr) * 1986-12-09 1988-06-10 Cootec Deutschland Gmbh Procede de traitement d'acier en poche
EP0274290A1 (fr) * 1986-11-26 1988-07-13 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Procédé de coulée d'acier comportant un inertage du bain d'acier par de l'anhydride carbonique sous forme de neige
EP0288369A2 (fr) * 1987-04-20 1988-10-26 Liquid Air Corporation Procédé et appareil pour la protection d'un écoulement de métal liquide

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4357003A (en) * 1980-09-24 1982-11-02 Jones & Laughlin Steel Corporation Blast furnace cast house pollutant suppression
FR2579495B1 (fr) * 1985-04-01 1987-09-11 Air Liquide Procede de protection d'un jet de coulee de metal

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2409097A1 (fr) * 1977-11-21 1979-06-15 Lodge Cottrell Ltd Procede et installation de lutte contre les fumees d'une matiere en fusion
EP0071359A1 (fr) * 1981-07-23 1983-02-09 Uss Engineers And Consultants, Inc. Procédé et appareil éliminant des émanations gazeuses d'un bain métallique
EP0154585A2 (fr) * 1984-02-24 1985-09-11 Canadian Liquid Air Ltd Air Liquide Canada Ltee Procédé de coulée d'un métal liquide
EP0196242A1 (fr) * 1985-02-21 1986-10-01 Canadian Liquid Air Ltd Air Liquide Canada Ltee Procédé de protection d'un jet de coulee d'acier
EP0274290A1 (fr) * 1986-11-26 1988-07-13 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Procédé de coulée d'acier comportant un inertage du bain d'acier par de l'anhydride carbonique sous forme de neige
FR2607829A1 (fr) * 1986-12-09 1988-06-10 Cootec Deutschland Gmbh Procede de traitement d'acier en poche
EP0288369A2 (fr) * 1987-04-20 1988-10-26 Liquid Air Corporation Procédé et appareil pour la protection d'un écoulement de métal liquide

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
STAHL UND EISEN, Band 103, Nr. 8, 25. April 1983, Seite 394, Düsseldorf, DE; "Verringerung der Stickstoffaufnahme von flüssigem Stahl in der Pfanne" *

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1992007099A1 (fr) * 1990-10-20 1992-04-30 Klöckner Stahl Gmbh Dispositif d'inertisation de cuves de coulee pour le transport de metaux en fusion
AU644694B2 (en) * 1990-10-20 1993-12-16 Klockner Stahl Gmbh Apparatus and method for delivering inert gas into a molten metal transportation vessel
US5286008A (en) * 1990-10-20 1994-02-15 Klockner Stahl Gmbh System for inerting a casting vessel used for transporting molten metal
US5196072A (en) * 1990-12-12 1993-03-23 Liquid Air Corporation Method and apparatus for controlling metal oxide fume generation during subdivision of a body containing metal values
AU641575B2 (en) * 1990-12-12 1993-09-23 Liquid Air Corporation Method and apparatus for controlling metal oxide fume generation during the oxygen-induced subdivision of a body containing metal values
US5343491A (en) * 1991-11-28 1994-08-30 Carbagas And Von Roll Ag Method of suppressing dust and fumes during electric steel production
WO1998021373A2 (fr) * 1996-11-08 1998-05-22 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Procede pour limiter les emanations de vapeur pendant le transfert de metal liquide
WO1998021373A3 (fr) * 1996-11-08 1998-08-20 Air Liquide Procede pour limiter les emanations de vapeur pendant le transfert de metal liquide
US9107906B1 (en) 2014-10-28 2015-08-18 Adma Biologics, Inc. Compositions and methods for the treatment of immunodeficiency
US9714283B2 (en) 2014-10-28 2017-07-25 Adma Biologics, Inc. Compositions and methods for the treatment of immunodeficiency
US9815886B2 (en) 2014-10-28 2017-11-14 Adma Biologics, Inc. Compositions and methods for the treatment of immunodeficiency
US9969793B2 (en) 2014-10-28 2018-05-15 Adma Biologics, Inc. Compositions and methods for the treatment of immunodeficiency
US10683343B2 (en) 2014-10-28 2020-06-16 Adma Biologics, Inc. Compositions and methods for the treatment of immunodeficiency
US11339206B2 (en) 2014-10-28 2022-05-24 Adma Biomanufacturing, Llc Compositions and methods for the treatment of immunodeficiency
US11780906B2 (en) 2014-10-28 2023-10-10 Adma Biomanufacturing, Llc Compositions and methods for the treatment of immunodeficiency
US10259865B2 (en) 2017-03-15 2019-04-16 Adma Biologics, Inc. Anti-pneumococcal hyperimmune globulin for the treatment and prevention of pneumococcal infection
US11084870B2 (en) 2017-03-15 2021-08-10 Adma Biologics, Inc. Anti-pneumococcal hyperimmune globulin for the treatment and prevention of pneumococcal infection
US11897943B2 (en) 2017-03-15 2024-02-13 Adma Biomanufacturing, Llc Anti-pneumococcal hyperimmune globulin for the treatment and prevention of pneumococcal infection

Also Published As

Publication number Publication date
JPH02282409A (ja) 1990-11-20
US5683652A (en) 1997-11-04
ES2052985T3 (es) 1994-07-16
DE3904415C1 (fr) 1990-04-26
EP0383184B1 (fr) 1994-05-11
DE59005658D1 (de) 1994-06-16
DD292025A5 (de) 1991-07-18
CA2010040A1 (fr) 1990-08-14
ATE105588T1 (de) 1994-05-15

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