SE0501839L - Lance for use in combustion and lance manufacturing process - Google Patents

Lance for use in combustion and lance manufacturing process

Info

Publication number
SE0501839L
SE0501839L SE0501839A SE0501839A SE0501839L SE 0501839 L SE0501839 L SE 0501839L SE 0501839 A SE0501839 A SE 0501839A SE 0501839 A SE0501839 A SE 0501839A SE 0501839 L SE0501839 L SE 0501839L
Authority
SE
Sweden
Prior art keywords
core
lance
ceramic layer
mantle surface
around
Prior art date
Application number
SE0501839A
Other languages
Swedish (sv)
Other versions
SE528209C2 (en
Inventor
Tomas Ekman
Lennart Rangmark
Original Assignee
Aga Ab
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 Aga Ab filed Critical Aga Ab
Priority to SE0501839A priority Critical patent/SE0501839L/en
Priority to US11/325,734 priority patent/US20070040308A1/en
Priority to PCT/SE2006/050277 priority patent/WO2007021238A1/en
Publication of SE528209C2 publication Critical patent/SE528209C2/en
Publication of SE0501839L publication Critical patent/SE0501839L/en

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
    • C21C5/4613—Refractory coated lances; Immersion lances
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D3/00—Charging; Discharging; Manipulation of charge
    • F27D3/16—Introducing a fluid jet or current into the charge
    • 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
    • C21C5/52—Manufacture of steel in electric furnaces
    • C21C5/5211—Manufacture of steel in electric furnaces in an alternating current [AC] electric arc furnace
    • C21C5/5217—Manufacture of steel in electric furnaces in an alternating current [AC] electric arc furnace equipped with burners or devices for injecting gas, i.e. oxygen, or pulverulent materials into the furnace
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN  A CARRIER GAS OR AIR 
    • F23C2900/00—Special features of, or arrangements for combustion apparatus using fluid fuels or solid fuels suspended in air; Combustion processes therefor
    • F23C2900/07021—Details of lances
    • 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
    • F23D2900/00018—Means for protecting parts of the burner, e.g. ceramic lining outside of the flame tube
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/20—Recycling

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Treatment Of Steel In Its Molten State (AREA)
  • Laminated Bodies (AREA)

Abstract

The lance (1) has a composite structure comprising a metal core (3) and a ceramic layer (4) around the outside. Play is present between the core mantle surface and the inner side of the ceramic layer. A lance for injecting gases during a combustion process contains a gas flow channel (2) and has a composite structure comprising a metal core and a ceramic layer around the outside of the core. The mantle surface of the core comprises a lower diameter region (6) surrounded by larger diameter regions (7, 9). Play is present between the core mantle surface and the inner side of the ceramic layer in order to prevent the latter cracking as a result of expansion differences between the core and this layer following changes in temperature. An INDEPENDENT CLAIM is also included for a method for producing the lance by securing the ceramic layer around the core.
SE0501839A 2005-08-19 2005-08-19 Lance for use in combustion and lance manufacturing process SE0501839L (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
SE0501839A SE0501839L (en) 2005-08-19 2005-08-19 Lance for use in combustion and lance manufacturing process
US11/325,734 US20070040308A1 (en) 2005-08-19 2006-01-05 Lance for use during combustion
PCT/SE2006/050277 WO2007021238A1 (en) 2005-08-19 2006-08-04 Lance to be used during combustion

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE0501839A SE0501839L (en) 2005-08-19 2005-08-19 Lance for use in combustion and lance manufacturing process

Publications (2)

Publication Number Publication Date
SE528209C2 SE528209C2 (en) 2006-09-26
SE0501839L true SE0501839L (en) 2006-09-26

Family

ID=37054377

Family Applications (1)

Application Number Title Priority Date Filing Date
SE0501839A SE0501839L (en) 2005-08-19 2005-08-19 Lance for use in combustion and lance manufacturing process

Country Status (3)

Country Link
US (1) US20070040308A1 (en)
SE (1) SE0501839L (en)
WO (1) WO2007021238A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE0501840L (en) * 2005-08-19 2007-02-20 Aga Ab Procedure as well as for monitoring a burner
US8920711B2 (en) 2012-07-20 2014-12-30 Specialty Minerals (Michigan) Inc. Lance for wire feeding

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3508618A1 (en) * 1985-03-29 1986-09-18 Vasipari Kutató és Fejlesztö Vállalat, Budapest BLOWING TREATMENT FOR TREATING METAL MELT IN MILL PLANTS
FR2592393B1 (en) * 1985-12-26 1991-12-27 Daussan & Co INJECTION LANCE FOR METALLURGICAL CONTAINER AND METHOD FOR MANUFACTURING SAME.
US4750716A (en) * 1986-04-04 1988-06-14 Ashland Oil, Inc. Injection lance
GB9221842D0 (en) * 1992-10-17 1992-12-02 Foseco Int Lance

Also Published As

Publication number Publication date
SE528209C2 (en) 2006-09-26
US20070040308A1 (en) 2007-02-22
WO2007021238A1 (en) 2007-02-22

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Legal Events

Date Code Title Description
NUG Patent has lapsed