FR2070864A1 - Blast furnace - injection of oxidising gas independently - of the blast to improve prodn - Google Patents

Blast furnace - injection of oxidising gas independently - of the blast to improve prodn

Info

Publication number
FR2070864A1
FR2070864A1 FR7045078A FR7045078A FR2070864A1 FR 2070864 A1 FR2070864 A1 FR 2070864A1 FR 7045078 A FR7045078 A FR 7045078A FR 7045078 A FR7045078 A FR 7045078A FR 2070864 A1 FR2070864 A1 FR 2070864A1
Authority
FR
France
Prior art keywords
blast
injection
prodn
improve
oxidising gas
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Withdrawn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
FR7045078A
Other languages
French (fr)
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.)
Jones and Laughlin Steel Corp
Original Assignee
Jones and Laughlin Steel Corp
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 Jones and Laughlin Steel Corp filed Critical Jones and Laughlin Steel Corp
Publication of FR2070864A1 publication Critical patent/FR2070864A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B5/00—Making pig-iron in the blast furnace
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B7/00—Blast furnaces
    • C21B7/16—Tuyéres

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacture Of Iron (AREA)

Abstract

Blast furnace yields are improved by injection of oxidising gas into the tuyere combustion zone independently of the air blast so that combustion zone is extended towards the centre of the furnace taking in part of the dead zone. The gas is either injected at supersonic speeds so that it passes directly through the combustion zone without reaction or decomposition, or alternatively it is injected with a lance so that it impinges directly on the dead zone. Enables higher blast volumes, temperatures and more oxygen enrichment to be used without causing charge hanging.
FR7045078A 1969-12-15 1970-12-08 Blast furnace - injection of oxidising gas independently - of the blast to improve prodn Withdrawn FR2070864A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US88497769A 1969-12-15 1969-12-15

Publications (1)

Publication Number Publication Date
FR2070864A1 true FR2070864A1 (en) 1971-09-17

Family

ID=25385861

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7045078A Withdrawn FR2070864A1 (en) 1969-12-15 1970-12-08 Blast furnace - injection of oxidising gas independently - of the blast to improve prodn

Country Status (1)

Country Link
FR (1) FR2070864A1 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0056644A2 (en) * 1981-01-21 1982-07-28 Union Carbide Corporation Supersonic injection of oxygen in cupolas
FR2702221A1 (en) * 1993-03-03 1994-09-09 Air Liquide Process for obtaining metal from the blast furnace or cupola.
WO1998021536A2 (en) * 1996-11-13 1998-05-22 Messer Griesheim Gmbh Operating method and device for a shaft furnace
EP1939305A1 (en) * 2006-12-29 2008-07-02 L'AIR LIQUIDE, Société Anonyme pour l'Etude et l'Exploitation des Procédés Georges Claude Process for making pig iron in a blast furnace
AT510313B1 (en) * 2010-08-25 2013-06-15 Siemens Vai Metals Tech Gmbh METHOD FOR INCREASING THE INTRUSION DEPTH OF A OXYGEN BEAM

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0056644A2 (en) * 1981-01-21 1982-07-28 Union Carbide Corporation Supersonic injection of oxygen in cupolas
EP0056644A3 (en) * 1981-01-21 1982-08-11 Union Carbide Corporation Supersonic injection of oxygen in cupolas
FR2702221A1 (en) * 1993-03-03 1994-09-09 Air Liquide Process for obtaining metal from the blast furnace or cupola.
WO1994020642A1 (en) * 1993-03-03 1994-09-15 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Method for obtaining metal from a blast furnace or cupola furnace
US5522916A (en) * 1993-03-03 1996-06-04 L'air Liquids, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Method and apparatus for injecting liquid oxygen
WO1998021536A2 (en) * 1996-11-13 1998-05-22 Messer Griesheim Gmbh Operating method and device for a shaft furnace
WO1998021536A3 (en) * 1996-11-13 1998-10-29 Messer Griesheim Gmbh Operating method and device for a shaft furnace
EP1939305A1 (en) * 2006-12-29 2008-07-02 L'AIR LIQUIDE, Société Anonyme pour l'Etude et l'Exploitation des Procédés Georges Claude Process for making pig iron in a blast furnace
WO2008080922A2 (en) * 2006-12-29 2008-07-10 L'air Liquide Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Process for making pig iron in a blast furnace
WO2008080922A3 (en) * 2006-12-29 2008-09-12 Air Liquide Process for making pig iron in a blast furnace
CN101573456B (en) * 2006-12-29 2011-05-25 乔治洛德方法研究和开发液化空气有限公司 Process for making pig iron in a blast furnace
AT510313B1 (en) * 2010-08-25 2013-06-15 Siemens Vai Metals Tech Gmbh METHOD FOR INCREASING THE INTRUSION DEPTH OF A OXYGEN BEAM
US8808422B2 (en) 2010-08-25 2014-08-19 Siemens Vai Metals Technologies Gmbh Method for increasing the penetration depth of an oxygen stream

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Legal Events

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