GB1235657A - Improvements in or relating to a lance for blowing oxygen into a kaldo furnace - Google Patents

Improvements in or relating to a lance for blowing oxygen into a kaldo furnace

Info

Publication number
GB1235657A
GB1235657A GB3683/69A GB368369A GB1235657A GB 1235657 A GB1235657 A GB 1235657A GB 3683/69 A GB3683/69 A GB 3683/69A GB 368369 A GB368369 A GB 368369A GB 1235657 A GB1235657 A GB 1235657A
Authority
GB
United Kingdom
Prior art keywords
oxygen
section
mixing chamber
main duct
rearward
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.)
Expired
Application number
GB3683/69A
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.)
Sollac SA
Original Assignee
Lorraine de Laminage Continu SA SOLLAC
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 Lorraine de Laminage Continu SA SOLLAC filed Critical Lorraine de Laminage Continu SA SOLLAC
Publication of GB1235657A publication Critical patent/GB1235657A/en
Expired 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)
  • Furnace Charging Or Discharging (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
  • Carbon Steel Or Casting Steel Manufacturing (AREA)

Abstract

1,235,657. Oxygen lances. SOC. LORRAINE DE LAMINAGE CONTINU. 22 Jan., 1969 [25 Jan., 1968], No. 3683/69. Heading F4B. An oxygen lance for use in a Kaldo-type furnace, comprises a main duct 4, a plurality of auxiliary ducts 12 and a cooling circuit, to said main duct having a rearward section 4b which is connected to a source of oxygen, a forward section 4a which has an outlet orifice 6 and is of a length which is at least four times its mean diameter, and a mixing chamber 15 interconnecting said rearward and forward sections, the said auxiliary duct 12 being disposed externally of the rearward section 4b and debouching substantially tangentially into the mixing chamber 15. The auxiliary ducts 12 are defined by grooves 13 of a screwthreaded sleeve 14 and by the internal wall of a connecting sleeve 10. In operation, the secondary source of oxygen 9 causes the rotation of all the oxygen passing through the main duct 4, the total quantity of oxygen issuing from the mixing chamber undergoing, in the section 4a, a sufficient pressure loss so that at the orifice 6 the jet of oxygen flares rapidly in the form of a cone.
GB3683/69A 1968-01-25 1969-01-22 Improvements in or relating to a lance for blowing oxygen into a kaldo furnace Expired GB1235657A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR137485 1968-01-25

Publications (1)

Publication Number Publication Date
GB1235657A true GB1235657A (en) 1971-06-16

Family

ID=8645119

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3683/69A Expired GB1235657A (en) 1968-01-25 1969-01-22 Improvements in or relating to a lance for blowing oxygen into a kaldo furnace

Country Status (6)

Country Link
US (1) US3559623A (en)
BE (1) BE725942A (en)
DE (1) DE1902637B2 (en)
FR (1) FR1564580A (en)
GB (1) GB1235657A (en)
LU (1) LU57675A1 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2356487A1 (en) * 1973-11-12 1975-05-22 Rheinstahl Ag LANCE FOR A FLUIDED BED FURNACE
JPS6059965B2 (en) * 1979-03-28 1985-12-27 日本鋼管株式会社 Rotating sublance rotating device
FR2540519A2 (en) * 1980-08-26 1984-08-10 Ugine Aciers Nozzle for injecting oxygen in a stabilised supersonic jet for decarburisation of molten metals, and, in particular, molten chromium
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
LU87856A1 (en) * 1990-12-10 1992-08-25 Arbed BLOWING LANCE
US5596149A (en) * 1995-10-23 1997-01-21 The Babcock & Wilcox Company Pressure measurement tap for a pressurized fluidized bed
AUPQ535500A0 (en) * 2000-01-31 2000-02-17 Technological Resources Pty Limited Apparatus for injecting gas into a vessel

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3112194A (en) * 1960-10-19 1963-11-26 Union Carbide Corp Molten bath treating method and apparatus
US3169161A (en) * 1961-04-05 1965-02-09 Air Prod & Chem Oxygen-fuel probe
FR84791E (en) * 1963-11-25 1965-04-16 Siderurgie Fse Inst Rech Adjustable insufflation lance for fine particles in suspension

Also Published As

Publication number Publication date
FR1564580A (en) 1969-04-25
DE1902637B2 (en) 1973-03-15
DE1902637A1 (en) 1971-04-22
BE725942A (en) 1969-05-29
US3559623A (en) 1971-02-02
DE1902637C3 (en) 1973-10-11
LU57675A1 (en) 1969-04-15

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