EP0051746B1 - Lance à immersion utilisée en sidérurgie - Google Patents

Lance à immersion utilisée en sidérurgie Download PDF

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Publication number
EP0051746B1
EP0051746B1 EP81107966A EP81107966A EP0051746B1 EP 0051746 B1 EP0051746 B1 EP 0051746B1 EP 81107966 A EP81107966 A EP 81107966A EP 81107966 A EP81107966 A EP 81107966A EP 0051746 B1 EP0051746 B1 EP 0051746B1
Authority
EP
European Patent Office
Prior art keywords
lance
abutment
axially
lance pipe
coupling
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
EP81107966A
Other languages
German (de)
English (en)
Other versions
EP0051746A1 (fr
Inventor
Peter Schütz
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.)
Krupp Stahl AG
Original Assignee
Krupp Stahl AG
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 Krupp Stahl AG filed Critical Krupp Stahl AG
Priority to AT81107966T priority Critical patent/ATE9492T1/de
Publication of EP0051746A1 publication Critical patent/EP0051746A1/fr
Application granted granted Critical
Publication of EP0051746B1 publication Critical patent/EP0051746B1/fr
Expired legal-status Critical Current

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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
    • C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
    • C21C7/0037—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00 by injecting powdered material
    • 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

Definitions

  • the invention relates to a submersible lance for steelworks with the features of the preamble of patent claim 1.
  • Such an immersion lance is known from WO-A1-80 / 01 923 for blowing gas into the liquid melt in a metallurgical treatment vessel.
  • FIG. 1 shows a section of FIG. 1, namely the part of the lance tube 1 from the abutment 5 to the flexible intermediate member 6.
  • a dashed line 11 identifies the lance axis.
  • the design of the clamping element 8, which can be changed in its axial extent, can be seen in detail.
  • This consists of two threaded sleeves 12 and 13, of which only the inner sleeve 12 is rigid, connected to the abutment 5, here part of the abutment 5, while the outer sleeve 13 abuts the pressure flange 7.
  • the contact surface is designed so that the outer sleeve 13 can be rotated relative to the pressure flange 7.
  • an outer hexagon 15 is provided on the outer sleeve 13 to attach a key or the like.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Carbon Steel Or Casting Steel Manufacturing (AREA)
  • Treatment Of Steel In Its Molten State (AREA)
  • Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
  • Furnace Charging Or Discharging (AREA)

Claims (2)

1. Lance plongeante d'aciérie pour l'injection de gaz et/ou de solides pulvérulents dans des masses fondues de fonte brute ou d'acier avec une buse a l'extrémité antérieure et des moyens de raccordement d'un accouplement à l'extrémité postérieure, constituée d'un tuyau de lance et d'une gaine ignifuge formée par assemblage de plusieurs segments annulaires cylindriques, le segment le plus en avant étant fixé axialement sur le tuyau de lance par une attache et le segment le plus en arrière disposé à une distance des moyens de raccordement de l'accouplement étant adjacent à une butée réglable axialement, démontable, reliée à force au tuyau de lance, par le moyen d'un organe intermédiaire flexible axialement, à savoir un ressort précomprimé, caractérisée par le fait qu'un élément de tension (8) à extension axiale modifiable est prévu entre la butée (5) et l'organe intermédiaire flexible (6).
2. Lance plongeante selon la revendication 1, caractérisée par le fait que l'élément de tension (8), est formé de deux douilles (12, 13) reliées l'une à l'autre par des filetages, la douille intérieure (12) étant liée rigidement à la butée (5) tandis que la douille extérieure (13) est adjacente à un flasque de compression (7) en étant rotative par rapport à lui et est munie d'un six-pans externe (15) ou similaire pour faire pivoter la douille (13).
EP81107966A 1980-11-07 1981-10-06 Lance à immersion utilisée en sidérurgie Expired EP0051746B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT81107966T ATE9492T1 (de) 1980-11-07 1981-10-06 Tauchlanze fuer den stahlwerksbetrieb.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3041995 1980-11-07
DE3041995A DE3041995C2 (de) 1980-11-07 1980-11-07 Tauchlanze für den Stahlwerksbetrieb

Publications (2)

Publication Number Publication Date
EP0051746A1 EP0051746A1 (fr) 1982-05-19
EP0051746B1 true EP0051746B1 (fr) 1984-09-19

Family

ID=6116188

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81107966A Expired EP0051746B1 (fr) 1980-11-07 1981-10-06 Lance à immersion utilisée en sidérurgie

Country Status (3)

Country Link
EP (1) EP0051746B1 (fr)
AT (1) ATE9492T1 (fr)
DE (1) DE3041995C2 (fr)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1980001923A1 (fr) * 1979-03-16 1980-09-18 Hoeganaes Ab Garniture refractaire pour tube metallique

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1439522A (en) * 1922-01-14 1922-12-19 Karl S Howard Pouring ladle for molten metal
US3495815A (en) * 1967-07-17 1970-02-17 Union Carbide Corp Outside change tuyere
GB1400248A (en) * 1972-09-28 1975-07-16 Foseco Int Stopper rods
BE849582R (fr) * 1976-01-07 1977-04-15 Rene Desaar Lance de desulfuration de fonte en poche
FR2398804A1 (fr) * 1977-07-25 1979-02-23 Siderurgie Fse Inst Rech Perfectionnements aux dispositifs destines a etre soumis a des contraintes thermiques severes
GB2021242A (en) * 1977-12-10 1979-11-28 Duport Steels Ltd Blowing Lance for Solid Materials

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1980001923A1 (fr) * 1979-03-16 1980-09-18 Hoeganaes Ab Garniture refractaire pour tube metallique

Also Published As

Publication number Publication date
DE3041995C2 (de) 1982-10-21
DE3041995A1 (de) 1982-07-22
ATE9492T1 (de) 1984-10-15
EP0051746A1 (fr) 1982-05-19

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