DE2708410B1 - Immersion lance - Google Patents

Immersion lance

Info

Publication number
DE2708410B1
DE2708410B1 DE2708410A DE2708410A DE2708410B1 DE 2708410 B1 DE2708410 B1 DE 2708410B1 DE 2708410 A DE2708410 A DE 2708410A DE 2708410 A DE2708410 A DE 2708410A DE 2708410 B1 DE2708410 B1 DE 2708410B1
Authority
DE
Germany
Prior art keywords
pipe
tube
immersion lance
welded
outside
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
DE2708410A
Other languages
German (de)
Other versions
DE2708410C2 (en
Inventor
Juergen Dipl-Ing Berve
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 Hoesch Stahl 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
Priority to DE2708410A priority Critical patent/DE2708410C2/en
Priority to GB4529/78A priority patent/GB1579522A/en
Priority to BE184994A priority patent/BE863756A/en
Priority to NLAANVRAGE7801948,A priority patent/NL177611C/en
Priority to SE7801992A priority patent/SE426505B/en
Priority to LU79110A priority patent/LU79110A1/en
Priority to FR7805235A priority patent/FR2381830A1/en
Priority to IT20597/78A priority patent/IT1092840B/en
Publication of DE2708410B1 publication Critical patent/DE2708410B1/en
Application granted granted Critical
Publication of DE2708410C2 publication Critical patent/DE2708410C2/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
    • 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)

Description

Die Erfindung betrifft eine Tauchlanze zum Einbringen von Feststoffen in Pulver- oder Staubform mittels eines gasförmigen Mediums in eine Metall-, insbesondere Stahlschmelze, bestehend aus einem metallischen Rohr und einer das Rohr umgebenden Verkleidung aus feuerfesten, nichtmetallischem Stoff, insbesondere Schamottebeton, der durch eine mit dem Rohr verbundene Armierung verstärkt ist, die aus mehreren auf dem Rohr in Umfangsrichtung verteilt befestigten, insbesondere aufgeschweißten Längsrippen bestehtThe invention relates to an immersion lance for introducing solids in powder or dust form by means of a gaseous medium in a metal, in particular steel melt, consisting of a metallic Pipe and a lining surrounding the pipe made of fireproof, non-metallic material, in particular Fireclay concrete, which is reinforced by a reinforcement connected to the pipe, which is made up of several on the pipe distributed in the circumferential direction fixed, in particular welded longitudinal ribs

Bei einer bekannten Tauchlanze dieser Art (DT-OS 26 982) bestehen die Rippen aus Flacheisen, das sternförmig auf der Außenseite des Rohres angeschweißt ist Die freien Ränder der Flacheisen sind an mehreren Stellen untereinander durch einen um die Längsrippen spiralförmig gewickelten Draht verbunden. Bei der Benutzung einer solchen Tauchlanze treten trotz der Armierung von den freien Rändern der Längsrippen ausgehende Schwingungsrisse in der Verkleidung auf, so daß Teile des feuerfesten Stoffes mit der Folge ausbröckeln, daß die Verkleidung das metallische Rohr nicht mehr ausreichend schützen kann.In a known immersion lance of this type (DT-OS 26 982), the ribs are made of flat iron that is welded in a star shape on the outside of the pipe. The free edges of the flat iron are on connected to each other in several places by a wire wound spirally around the longitudinal ribs. When using such a diving lance, despite the reinforcement, the free edges of the Longitudinal ribs outgoing vibration cracks in the cladding, so that parts of the refractory material with the result that the cladding can no longer adequately protect the metallic pipe.

Der Erfindung liegt die Aufgabe zugrunde, eine Tauchlanze zu schaffen, bei der die Gefahr von Rissen nicht bestehtThe invention is based on the object of creating a submerged lance in which there is a risk of cracks does not exist

Diese Aufgabe wird erfindungsgemäß mit einer Tauchlanze der eingangs genannten Art dadurch gelöst, daß jede Rippe von einem Winkelprofil gebildet wird, das mit der Außenseite des Rohres einen Kanal bildetThis object is achieved according to the invention with a submersible lance of the type mentioned at the outset in that that each rib is formed by an angle profile which forms a channel with the outside of the tube

Vorzugsweise sind die freien Schenkelenden auf der Außenseite des Rohres angeschweißtThe free leg ends are preferably welded onto the outside of the pipe

Es hat sich gezeigt, daß bei einer solchen Tauchlanze keine Schwingungsrisse mehr auftreten, so daß die Gebrauchsfähigkeit derartiger Lanzen im Vergleich zu herkömmlichen Lanzen beträchtlich gesteigert werden konnte.It has been shown that with such a diving lance vibration cracks no longer occur, so that the serviceability of such lances in comparison to conventional lances could be increased considerably.

Die Erfindung wird anhand einer eine Tauchlanze im Querschnitt darstellenden Zeichnung näher erläutertThe invention is explained in more detail with reference to a drawing showing a submersible lance in cross section

Die Tauchlanze besteht aus einem metallischen Rohr 1, insbesondere einem Stahlrohr, auf dem drei Winkeleisenprofile 2 mit den freien Enden ihrer Schenkel befestigt sind. Als Befestigung hat sich eine über die gesamte Länge der Profile 2 verlaufende ·■*> Schweißnaht bewährt Derart auf dem Rohr 1 befestigte Winkelprofile 2 bilden Kanäle 3, über die die Lanze gekühlt werden kana Das Rohr 1 und die Winkelprofile 2 sind von einer Verkleidung 4 aus einem feuerfesten, nichtmetallischen Stoff, insbesondere Schamottebeton, umgeben. Der feuerfeste Stoff ist durch strahlenförmig verlaufende, stabförmige Armierungen 5 verstärkt die mit ihrem einen Ende am Rohr 1 oder den Winkelprofilen befestigt sind.The immersion lance consists of a metallic tube 1, in particular a steel tube, on which three Angle iron profiles 2 are attached with the free ends of their legs. A · ■ *> running over the entire length of the profiles 2 Welded seam is well-proven Angled profiles 2 fastened on the pipe 1 in this way form channels 3 through which the lance can be cooled The pipe 1 and the angle profiles 2 are covered by a cladding 4 made of a fireproof, non-metallic material, in particular firebrick concrete, surrounded. The fireproof fabric is radiating through extending, rod-shaped reinforcements 5 reinforced with one end on the pipe 1 or the Angle profiles are attached.

Hierzu 1 Blatt Zeichnungen1 sheet of drawings

ORIGINAL INSPECTEDORIGINAL INSPECTED

Claims (2)

Patentansprüche:Patent claims: 1. Tauchlanze zum Einbringen von Feststoffen in Pulver- oder Staubform mittels eines gasförmigen Mediums in eine Metall-, insbesondere Stahlschmelze, bestehend aus einem metallischen Rohr und einer das Rohr umgebenden Verkleidung aus feuerfestem, nichtmetallischem Stoff, insbesondere Schamottebeton, der durch eine mit dem Rohr verbundene Armierung verstärkt ist, die aus mehreren auf dem Rohr in Umfangsrichtung verteilt befestigten, insbesondere aufgeschweißten Längsrippen besteht, dadurch gekennzeichnet, daß jede Rippe von einem Winkelprofil (2) gebildet wird, das mit der Außenseite des Rohres (1) einen Kanal (3) bildet1. Immersion lance for introducing solids in powder or dust form by means of a gaseous one Medium in a metal, in particular steel melt, consisting of a metallic tube and a the pipe surrounding cladding made of fireproof, non-metallic material, in particular firebrick concrete, which is reinforced by a reinforcement connected to the pipe, which consists of several on the Pipe consists of fixed, in particular welded, longitudinal ribs distributed in the circumferential direction, characterized in that each rib is formed by an angle profile (2) which is connected to the Outside of the tube (1) forms a channel (3) 2. Tauchlanze nach Anspruch 1, dadurch gekennzeichnet, daß die freien Schenkelenden des Winkelprofils (2) an der Außenseite des Rohres (1) angeschweißt sind.2. Immersion lance according to claim 1, characterized in that that the free leg ends of the angle profile (2) on the outside of the tube (1) are welded on.
DE2708410A 1977-02-26 1977-02-26 Diving lance Expired DE2708410C2 (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
DE2708410A DE2708410C2 (en) 1977-02-26 1977-02-26 Diving lance
GB4529/78A GB1579522A (en) 1977-02-26 1978-02-03 Plunger lance
BE184994A BE863756A (en) 1977-02-26 1978-02-08 LANCE FOR INTRODUCING PULVERULENT MATERIALS INTO A BATH OF MELTED METAL
SE7801992A SE426505B (en) 1977-02-26 1978-02-21 DOUBLE PLAN FOR INFORING THE SOLID SUBSTANCE IN POWDER OR DUST FORM
NLAANVRAGE7801948,A NL177611C (en) 1977-02-26 1978-02-21 IMMERSION LANCE FOR BRINGING POWDER-SOLIDS INTO A METAL BATH BY GAS.
LU79110A LU79110A1 (en) 1977-02-26 1978-02-23 DIVING LANCE
FR7805235A FR2381830A1 (en) 1977-02-26 1978-02-23 LANCE FOR INTRODUCING PULVERULENT MATERIALS INTO A BATH OF MELTED METAL
IT20597/78A IT1092840B (en) 1977-02-26 1978-02-24 METALLURGICAL IMMERSION LANCE

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
DE2708410B1 true DE2708410B1 (en) 1978-08-24
DE2708410C2 DE2708410C2 (en) 1979-04-19

Family

ID=6002241

Family Applications (1)

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

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
WO1980001923A1 (en) * 1979-03-16 1980-09-18 Hoeganaes Ab Refractory lining for a metal pipe
DE2912195A1 (en) * 1979-03-28 1980-10-09 Mannesmann Ag Lance for removing sulphur from molten iron and/or steel - where refractory sheath is held on lance tube by y=shaped anchors which increase lance life

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3322556A1 (en) * 1983-06-23 1985-01-10 Didier-Werke Ag, 6200 Wiesbaden Lance for blowing fluidised materials into molten metal
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
WO1980001923A1 (en) * 1979-03-16 1980-09-18 Hoeganaes Ab Refractory lining for a metal pipe
DE2912195A1 (en) * 1979-03-28 1980-10-09 Mannesmann Ag Lance for removing sulphur from molten iron and/or steel - where refractory sheath is held on lance tube by y=shaped anchors which increase lance life

Also Published As

Publication number Publication date
NL177611C (en) 1985-10-16
GB1579522A (en) 1980-11-19
DE2708410C2 (en) 1979-04-19
BE863756A (en) 1978-05-29
IT7820597A0 (en) 1978-02-24
SE426505B (en) 1983-01-24
IT1092840B (en) 1985-07-12
LU79110A1 (en) 1978-06-27
FR2381830B3 (en) 1980-11-28
SE7801992L (en) 1978-08-27
NL7801948A (en) 1978-08-29
FR2381830A1 (en) 1978-09-22
NL177611B (en) 1985-05-17

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Legal Events

Date Code Title Description
8327 Change in the person/name/address of the patent owner

Owner name: KRUPP STAHL AG, 4630 BOCHUM, DE

8327 Change in the person/name/address of the patent owner

Owner name: KRUPP HOESCH STAHL AG, 44145 DORTMUND, DE

8339 Ceased/non-payment of the annual fee