EP0235621A3 - Lance for blowing oxygen - Google Patents

Lance for blowing oxygen Download PDF

Info

Publication number
EP0235621A3
EP0235621A3 EP87101777A EP87101777A EP0235621A3 EP 0235621 A3 EP0235621 A3 EP 0235621A3 EP 87101777 A EP87101777 A EP 87101777A EP 87101777 A EP87101777 A EP 87101777A EP 0235621 A3 EP0235621 A3 EP 0235621A3
Authority
EP
European Patent Office
Prior art keywords
inner tube
blast pipe
nozzle
mouth
melt
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
EP87101777A
Other languages
French (fr)
Other versions
EP0235621A2 (en
EP0235621B1 (en
Inventor
Andre Bock
Romain Henrion
Jean Liesch
Carlo Heintz
Henri Klein
Jean-Francois Liesch
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.)
Paul Wurth SA
Original Assignee
Arbed SA
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 Arbed SA filed Critical Arbed SA
Priority to AT87101777T priority Critical patent/ATE77839T1/en
Publication of EP0235621A2 publication Critical patent/EP0235621A2/en
Publication of EP0235621A3 publication Critical patent/EP0235621A3/en
Application granted granted Critical
Publication of EP0235621B1 publication Critical patent/EP0235621B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Carbon Steel Or Casting Steel Manufacturing (AREA)
  • Treatment Of Steel In Its Molten State (AREA)
  • Percussion Or Vibration Massage (AREA)
  • Surgical Instruments (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
  • Furnace Charging Or Discharging (AREA)
  • Manufacture And Refinement Of Metals (AREA)

Abstract

A nozzle for the refining of metals by oxygen blasting from above the melt is presented. The nozzle includes a nozzle head having a blast pipe therethrough upstream of the mouth of the nozzle. The blast pipe directs a jet of gas comprised, at least in part, of oxygen, having a supersonic speed onto the melt. The blast pipe includes an inner tube. The lower portion of the inner tube has a throat positioned between a convergent and divergent sections, this lower portion defining a laval nozzle. The blast pipe also includes an outer tube coaxial with the inner tube and having a greater cross section than the inner tube. The mouth of the inner tube is spaced back (downstream) from the mouth of the blast pipe. The inner and outer tubes are each provided with flow control valves, and are connected to sources of pressurized gas. Devices are provided to vary the cross sectional area of the mouth of the inner tube. This device may consist of a needle shaped member, displaceable along the longitudinal axis of the inner tube, with the pointed portion of the needle movable between different positions within the convergent section of the inner tube.
EP87101777A 1986-02-25 1987-02-09 Lance for blowing oxygen Expired - Lifetime EP0235621B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87101777T ATE77839T1 (en) 1986-02-25 1987-02-09 OXYGEN BLOWING LANCE.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
LU86322 1986-02-25
LU86322A LU86322A1 (en) 1986-02-25 1986-02-25 OXYGEN BLOWING LANCE

Publications (3)

Publication Number Publication Date
EP0235621A2 EP0235621A2 (en) 1987-09-09
EP0235621A3 true EP0235621A3 (en) 1989-03-15
EP0235621B1 EP0235621B1 (en) 1992-07-01

Family

ID=19730647

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87101777A Expired - Lifetime EP0235621B1 (en) 1986-02-25 1987-02-09 Lance for blowing oxygen

Country Status (10)

Country Link
US (1) US4730784A (en)
EP (1) EP0235621B1 (en)
JP (1) JPH0826388B2 (en)
AT (1) ATE77839T1 (en)
AU (1) AU580471B2 (en)
BR (1) BR8700867A (en)
CA (1) CA1323758C (en)
DE (1) DE3780042T2 (en)
ES (1) ES2032762T3 (en)
LU (1) LU86322A1 (en)

Families Citing this family (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4911744A (en) * 1987-07-09 1990-03-27 Aga A.B. Methods and apparatus for enhancing combustion and operational efficiency in a glass melting furnace
LU87353A1 (en) * 1988-09-28 1990-04-06 Arbed OXYGEN BLOWING LANCE
LU87855A1 (en) * 1990-12-10 1992-08-25 Arbed BLOWING LANCE
US6133577A (en) * 1997-02-04 2000-10-17 Advanced Energy Systems, Inc. Method and apparatus for producing extreme ultra-violet light for use in photolithography
DE19755876C2 (en) * 1997-12-04 2000-02-24 Mannesmann Ag Blow lance for treating metallic melts and method for blowing in gases
US6065203A (en) * 1998-04-03 2000-05-23 Advanced Energy Systems, Inc. Method of manufacturing very small diameter deep passages
US6194733B1 (en) 1998-04-03 2001-02-27 Advanced Energy Systems, Inc. Method and apparatus for adjustably supporting a light source for use in photolithography
US6105885A (en) 1998-04-03 2000-08-22 Advanced Energy Systems, Inc. Fluid nozzle system and method in an emitted energy system for photolithography
US6180952B1 (en) 1998-04-03 2001-01-30 Advanced Energy Systems, Inc. Holder assembly system and method in an emitted energy system for photolithography
IT1302798B1 (en) * 1998-11-10 2000-09-29 Danieli & C Ohg Sp INTEGRATED DEVICE FOR THE INJECTION OF OXYGEN AND GASTECNOLOGICS AND FOR THE INSUFFLATION OF SOLID MATERIAL IN
GB0128878D0 (en) 2001-12-03 2002-01-23 Boc Group Plc Metallurgical lance and apparatus
AT411530B (en) * 2002-08-21 2004-02-25 Voest Alpine Ind Anlagen Decarburization of molten stainless steel in a converter involves delivering the treatment gas through an opening below the molten level and blower lances above it, to mix the gas thoroughly through the molten metal
US20090016150A1 (en) * 2007-07-13 2009-01-15 Emile Mimran Ice cream and topping mixing attachment
DE102009025873A1 (en) * 2009-05-27 2010-12-02 Saar-Metallwerke Gmbh Use of a height compensating nozzle
DE102010047969A1 (en) * 2010-03-31 2011-10-06 Sms Siemag Aktiengesellschaft Device for injecting gas into a metallurgical vessel
JP5273125B2 (en) * 2010-11-04 2013-08-28 新日鐵住金株式会社 Molten metal vacuum refining nozzle
CN102643946B (en) * 2012-04-24 2013-11-06 北京科技大学 Converter steelmaking method through power injection dephosphorization by adopting supersonic speed oxygen lance and supersonic speed oxygen lance
DE102012213927A1 (en) 2012-08-07 2013-06-06 Carl Zeiss Smt Gmbh Device for generating gas curtain for deflecting contaminating substances in extreme UV-mask metrological system, has nozzle with nozzle section, where pressure of supersonic-gas flow is not larger than specific percent of ambient pressure
CN107779545A (en) * 2017-10-25 2018-03-09 江阴市弘诺机械设备制造有限公司 A kind of electric furnace arrangement for producing steel wall lance
CN110961044A (en) * 2018-09-30 2020-04-07 中国石油天然气股份有限公司 Nozzle for lifting pipe of catalytic cracking unit and application thereof
CN109680118B (en) * 2019-02-27 2024-02-06 中冶赛迪工程技术股份有限公司 Coaxial double supersonic oxygen flow bundling oxygen gun
KR102263289B1 (en) * 2019-08-02 2021-06-09 주식회사 포스코 Apparatus for adjusting velocity of melter-gasifier tuyere
CN111467722B (en) * 2020-05-21 2023-07-04 南京湛泸科技有限公司 Fire-fighting sand blasting gun tube and design method of molded surface thereof
GB2596317B (en) * 2020-06-24 2023-11-15 Douwe Egberts Bv Variable opening nozzle and beverage preparation machine

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT174388B (en) * 1951-12-07 1953-03-25 Voest Ag Method and device for the treatment of molten metal covered with slag by blowing gases
AT216032B (en) * 1959-02-20 1961-07-10 Arbed Device for blowing a metal bath from above
US3130252A (en) * 1959-02-20 1964-04-21 Arbed Lances for treatment of metal baths
GB1198112A (en) * 1966-07-27 1970-07-08 Nippon Kokan Kk Method and Apparatus for Making Steel

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US736473A (en) * 1902-10-24 1903-08-18 Ernest M Arnold Oil-burner.
NL81050C (en) * 1951-03-22 1956-04-16
LU44701A1 (en) * 1962-12-04 1963-12-27
FR2108856A1 (en) * 1970-10-13 1972-05-26 Siderurgie Fse Inst Rech PROCESS FOR THE INTRODUCTION OF AUXILIARY FUELS IN A BLANKET AND TUBE FOR THE IMPLEMENTATION OF THIS PROCESS
US4022447A (en) * 1976-02-23 1977-05-10 United States Steel Corporation Supersonic nozzle for submerged tuyere oxygen steelmaking process
AU543552B2 (en) * 1978-12-26 1985-04-26 Sumitomo Metal Industries Ltd. Gasification of solid carbonaceous materials
SE447675B (en) * 1982-10-15 1986-12-01 Ifm Dev Ab Nozzle for injection injection
JPS59145717A (en) * 1983-02-04 1984-08-21 ユジンヌ・アシエ Oxygen jetting nozzle for jetting stable supersonic speed stream for decarbonizing cast iron, particularly chrome castiron

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT174388B (en) * 1951-12-07 1953-03-25 Voest Ag Method and device for the treatment of molten metal covered with slag by blowing gases
AT216032B (en) * 1959-02-20 1961-07-10 Arbed Device for blowing a metal bath from above
US3130252A (en) * 1959-02-20 1964-04-21 Arbed Lances for treatment of metal baths
GB1198112A (en) * 1966-07-27 1970-07-08 Nippon Kokan Kk Method and Apparatus for Making Steel

Also Published As

Publication number Publication date
JPH0826388B2 (en) 1996-03-13
CA1323758C (en) 1993-11-02
EP0235621A2 (en) 1987-09-09
BR8700867A (en) 1987-12-22
EP0235621B1 (en) 1992-07-01
ES2032762T3 (en) 1993-03-01
JPS62207815A (en) 1987-09-12
LU86322A1 (en) 1987-09-10
AU580471B2 (en) 1989-01-12
AU6925387A (en) 1987-08-27
DE3780042T2 (en) 1992-12-24
ATE77839T1 (en) 1992-07-15
DE3780042D1 (en) 1992-08-06
US4730784A (en) 1988-03-15

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