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FR2190923A1 - Contracted double flow lances - for blowing oxygen with particles in suspen-sion and having improved abrasion resistance - Google Patents

Contracted double flow lances - for blowing oxygen with particles in suspen-sion and having improved abrasion resistance

Info

Publication number
FR2190923A1
FR2190923A1 FR7224078A FR7224078A FR2190923A1 FR 2190923 A1 FR2190923 A1 FR 2190923A1 FR 7224078 A FR7224078 A FR 7224078A FR 7224078 A FR7224078 A FR 7224078A FR 2190923 A1 FR2190923 A1 FR 2190923A1
Authority
FR
France
Prior art keywords
particles
suspen
lances
sion
contracted
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
FR7224078A
Other languages
French (fr)
Other versions
FR2190923B1 (en
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.)
Institut de Recherches de la Siderurgie Francaise IRSID
Original Assignee
Institut de Recherches de la Siderurgie Francaise IRSID
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 Institut de Recherches de la Siderurgie Francaise IRSID filed Critical Institut de Recherches de la Siderurgie Francaise IRSID
Priority to FR7224078A priority Critical patent/FR2190923A1/en
Publication of FR2190923A1 publication Critical patent/FR2190923A1/en
Application granted granted Critical
Publication of FR2190923B1 publication Critical patent/FR2190923B1/fr
Granted legal-status Critical Current

Links

Classifications

    • 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
    • C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
    • C21C5/28—Manufacture of steel in the converter
    • C21C5/42—Constructional features of converters
    • C21C5/46—Details or accessories
    • C21C5/4606—Lances or injectors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D1/00—Burners for combustion of pulverulent fuel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D2214/00—Cooling
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D2900/00—Special features of, or arrangements for burners using fluid fuels or solid fuels suspended in a carrier gas
    • F23D2900/00006—Liquid fuel burners using pure oxygen or O2-enriched air as oxidant

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Treatment Of Steel In Its Molten State (AREA)
  • Furnace Charging Or Discharging (AREA)

Abstract

Lance comprises a first tube (I) for blowing O2 contg particles in suspension, a second tube (II) disposed concentrically to form an annular space for blowing a contraction gas between the external wall of (I) and the internal wall of (II). The space communicates with the interior of (I) in the area of the tip through a slot between one end of a tubular element extending (I) and a seating attached to (II). (I) is constituted by a metallic tubular envelope inside which is disposed an abrasion resistant ceramic material tube of the same internal dia. as the tubular element which extends (I) and extending over at least the lower third of the envelope.
FR7224078A 1972-07-04 1972-07-04 Contracted double flow lances - for blowing oxygen with particles in suspen-sion and having improved abrasion resistance Granted FR2190923A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7224078A FR2190923A1 (en) 1972-07-04 1972-07-04 Contracted double flow lances - for blowing oxygen with particles in suspen-sion and having improved abrasion resistance

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7224078A FR2190923A1 (en) 1972-07-04 1972-07-04 Contracted double flow lances - for blowing oxygen with particles in suspen-sion and having improved abrasion resistance

Publications (2)

Publication Number Publication Date
FR2190923A1 true FR2190923A1 (en) 1974-02-01
FR2190923B1 FR2190923B1 (en) 1976-08-06

Family

ID=9101292

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7224078A Granted FR2190923A1 (en) 1972-07-04 1972-07-04 Contracted double flow lances - for blowing oxygen with particles in suspen-sion and having improved abrasion resistance

Country Status (1)

Country Link
FR (1) FR2190923A1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2432552A1 (en) * 1978-08-03 1980-02-29 Siderurgie Fse Inst Rech Immersion lance consisting of two concentric tubes - esp. for injecting powder into molten iron or steel and using two tubes with the same outlet bore dia.
FR2644558A1 (en) * 1989-03-16 1990-09-21 Air Liquide Arc furnace equipped with fuel oil/oxygen burners and fuel oil/oxygen burner
EP0481955A2 (en) * 1990-10-15 1992-04-22 Deutsche Voest-Alpine Industrieanlagenbau Gmbh Burner for the combustion of solid fuels of fine-grained to powdery consistency
WO1996038690A1 (en) * 1995-06-01 1996-12-05 Voest-Alpine Industrieanlagenbau Gmbh Burner

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1211977A (en) * 1958-01-13 1960-03-21 Arbed Device for insuffiation of solids in a metal bath
FR1441304A (en) * 1965-07-28 1966-06-03 Beteiligungs & Patentverw Gmbh Method of operating an oxygen blowing lance with several orifices, and oxygen blowing lance with several orifices for the implementation of this method

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1211977A (en) * 1958-01-13 1960-03-21 Arbed Device for insuffiation of solids in a metal bath
FR1441304A (en) * 1965-07-28 1966-06-03 Beteiligungs & Patentverw Gmbh Method of operating an oxygen blowing lance with several orifices, and oxygen blowing lance with several orifices for the implementation of this method

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2432552A1 (en) * 1978-08-03 1980-02-29 Siderurgie Fse Inst Rech Immersion lance consisting of two concentric tubes - esp. for injecting powder into molten iron or steel and using two tubes with the same outlet bore dia.
FR2644558A1 (en) * 1989-03-16 1990-09-21 Air Liquide Arc furnace equipped with fuel oil/oxygen burners and fuel oil/oxygen burner
EP0481955A2 (en) * 1990-10-15 1992-04-22 Deutsche Voest-Alpine Industrieanlagenbau Gmbh Burner for the combustion of solid fuels of fine-grained to powdery consistency
EP0481955A3 (en) * 1990-10-15 1992-11-19 Deutsche Voest-Alpine Industrieanlagenbau Gmbh Burner for the combustion of solid fuels of fine-grained to powdery consistency
WO1996038690A1 (en) * 1995-06-01 1996-12-05 Voest-Alpine Industrieanlagenbau Gmbh Burner

Also Published As

Publication number Publication date
FR2190923B1 (en) 1976-08-06

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Legal Events

Date Code Title Description
ST Notification of lapse