FR2381830A1 - LANCE FOR INTRODUCING PULVERULENT MATERIALS INTO A BATH OF MELTED METAL - Google Patents

LANCE FOR INTRODUCING PULVERULENT MATERIALS INTO A BATH OF MELTED METAL

Info

Publication number
FR2381830A1
FR2381830A1 FR7805235A FR7805235A FR2381830A1 FR 2381830 A1 FR2381830 A1 FR 2381830A1 FR 7805235 A FR7805235 A FR 7805235A FR 7805235 A FR7805235 A FR 7805235A FR 2381830 A1 FR2381830 A1 FR 2381830A1
Authority
FR
France
Prior art keywords
tube
lance
bath
melted metal
lining
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
FR7805235A
Other languages
French (fr)
Other versions
FR2381830B3 (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.)
Fried Krupp Huettenwerke AG
Original Assignee
Fried Krupp Huettenwerke 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 Fried Krupp Huettenwerke AG filed Critical Fried Krupp Huettenwerke AG
Publication of FR2381830A1 publication Critical patent/FR2381830A1/en
Application granted granted Critical
Publication of FR2381830B3 publication Critical patent/FR2381830B3/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
    • C21C1/00—Refining of pig-iron; Cast iron
    • C21C1/02—Dephosphorising or desulfurising
    • 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
    • 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

Landscapes

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

Abstract

Une telle lance est constituée d'un tube métallique et d'un garnissage d'un matériau réfractaire non métallique, en particulier de béton de chamotte, qui entoure le tube et est renforcé par une armature reliée au tube et formée de plusieurs nervures longitudinales réparties dans le sens de la circonférence du tube et fixées sur lui, en particulier par soudage. Selon l'invention, chaque nervure est constituée d'une cornière 2 qui forme un canal 3 avec la surface extérieure du tube 1. Les cornières peuvent être soudées sur le tube tout au long des bords libres de leurs ailes et les canaux 3 peuvent servir au refroidissement de la lance. Les cornières et les éléments d'armature supplémentaires 5 évitent la fissuration du garnissage 4 sous l'effet des vibrations (efforts alternés).Such a lance consists of a metal tube and a lining of a non-metallic refractory material, in particular chamotte concrete, which surrounds the tube and is reinforced by a reinforcement connected to the tube and formed of several longitudinal ribs distributed in the direction of the circumference of the tube and fixed to it, in particular by welding. According to the invention, each rib consists of an angle iron 2 which forms a channel 3 with the outer surface of the tube 1. The angles can be welded to the tube all along the free edges of their wings and the channels 3 can be used. cooling the lance. The angles and additional reinforcing elements 5 prevent cracking of the lining 4 under the effect of vibrations (alternating forces).

FR7805235A 1977-02-26 1978-02-23 LANCE FOR INTRODUCING PULVERULENT MATERIALS INTO A BATH OF MELTED METAL Granted FR2381830A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2708410A DE2708410C2 (en) 1977-02-26 1977-02-26 Diving lance

Publications (2)

Publication Number Publication Date
FR2381830A1 true FR2381830A1 (en) 1978-09-22
FR2381830B3 FR2381830B3 (en) 1980-11-28

Family

ID=6002241

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7805235A Granted FR2381830A1 (en) 1977-02-26 1978-02-23 LANCE FOR INTRODUCING PULVERULENT MATERIALS INTO A BATH OF MELTED METAL

Country Status (8)

Country Link
BE (1) BE863756A (en)
DE (1) DE2708410C2 (en)
FR (1) FR2381830A1 (en)
GB (1) GB1579522A (en)
IT (1) IT1092840B (en)
LU (1) LU79110A1 (en)
NL (1) NL177611C (en)
SE (1) SE426505B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2451400A1 (en) * 1979-03-16 1980-10-10 Hoeganaes Ab REFRACTORY LINING FOR METAL PIPE SUCH AS ADDITIVE LANCES FOR METALLURGICAL OVENS
FR2549083A1 (en) * 1983-06-23 1985-01-18 Didier Werke Ag Lance for injection of fluidised materials

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2912195C2 (en) * 1979-03-28 1986-04-30 Mannesmann AG, 4000 Düsseldorf Desulfurization lance
AUPQ783100A0 (en) * 2000-05-30 2000-06-22 Technological Resources Pty Limited Apparatus for injecting solid particulate material into a vessel

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2451400A1 (en) * 1979-03-16 1980-10-10 Hoeganaes Ab REFRACTORY LINING FOR METAL PIPE SUCH AS ADDITIVE LANCES FOR METALLURGICAL OVENS
FR2549083A1 (en) * 1983-06-23 1985-01-18 Didier Werke Ag Lance for injection of fluidised materials

Also Published As

Publication number Publication date
IT1092840B (en) 1985-07-12
NL7801948A (en) 1978-08-29
LU79110A1 (en) 1978-06-27
DE2708410C2 (en) 1979-04-19
NL177611B (en) 1985-05-17
BE863756A (en) 1978-05-29
DE2708410B1 (en) 1978-08-24
SE7801992L (en) 1978-08-27
FR2381830B3 (en) 1980-11-28
SE426505B (en) 1983-01-24
IT7820597A0 (en) 1978-02-24
NL177611C (en) 1985-10-16
GB1579522A (en) 1980-11-19

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