EP0376142A1 - Installation d'injection - Google Patents

Installation d'injection Download PDF

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Publication number
EP0376142A1
EP0376142A1 EP19890123547 EP89123547A EP0376142A1 EP 0376142 A1 EP0376142 A1 EP 0376142A1 EP 19890123547 EP19890123547 EP 19890123547 EP 89123547 A EP89123547 A EP 89123547A EP 0376142 A1 EP0376142 A1 EP 0376142A1
Authority
EP
European Patent Office
Prior art keywords
gas
purging plug
gas purging
perforated brick
truncated cone
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
EP19890123547
Other languages
German (de)
English (en)
Other versions
EP0376142B1 (fr
Inventor
Herbert Dr. Wagner
Dirk Stein
Erich Struzik
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.)
Plibrico Co GmbH
Original Assignee
Plibrico Co GmbH
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=25875447&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0376142(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Plibrico Co GmbH filed Critical Plibrico Co GmbH
Priority to AT89123547T priority Critical patent/ATE97168T1/de
Publication of EP0376142A1 publication Critical patent/EP0376142A1/fr
Application granted granted Critical
Publication of EP0376142B1 publication Critical patent/EP0376142B1/fr
Anticipated expiration legal-status Critical
Revoked legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B9/00—General processes of refining or remelting of metals; Apparatus for electroslag or arc remelting of metals
    • C22B9/05—Refining by treating with gases, e.g. gas flushing also refining by means of a material generating gas in situ
    • C22B9/055—Refining by treating with gases, e.g. gas flushing also refining by means of a material generating gas in situ while the metal is circulating, e.g. combined with filtration
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D1/00—Treatment of fused masses in the ladle or the supply runners before casting
    • B22D1/002—Treatment with gases
    • B22D1/005—Injection assemblies therefor

Definitions

  • the present invention relates to a device with increased durability for blowing gases into metallurgical vessels.
  • Blowing devices are used in various fields of industry. E.g. they are used in metallurgical vessels and metal melts to introduce gases or finely divided solids into a liquid. In many cases, these are gas flushing blocks made of refractory material, which are equipped with channels through which the gases or finely divided solids flow into the liquid. Gas purging plugs are for example from DE-OS 36 25 478, DE-OS 36 42 623, DE-OS 36 31 521, DE-U 85 22 350, 86 20 206 and 87 16 110 and EP-A-0 153 380 known.
  • Such gas purging stones are usually provided with a metal jacket and, as a rule provided with a separate sleeve, are inserted into perforated stones.
  • the top surface of the sink stones is subject to high wear, so that the stones are continuously broken down from the surface.
  • the turbulence of the melt causes severe wear between the metal layer, sleeve, perforated brick and the adjacent pan base. As a result, the durability of these systems is very limited.
  • the upper truncated cone end of the gas purging plug which is not encased by the perforated brick, protrudes into the interior of the pan beyond the bottom of the pan and that the perforated brick and the gas purging plug sitting in it are provided with an outer covering of cast or stamped refractory material.
  • the refractory material also fills the gap between the bottom of the pan and the perforated brick.
  • the frustoconical gas purging plug preferably consists of two chambers which are separated from one another by a gas-tight layer. Metal is expediently used for this purpose.
  • a zone is provided in the area of the outer surface of the circular truncated cone in which no gas is conducted.
  • the non-gas-conducting chamber encloses a gas-conducting chamber in which there are continuous channels which extend from the circular frustum base to the top surface.
  • the gas permeability can also be achieved by other means, for example by non-directional porosity, directional gas permeability, the introduction of slots or channels arranged in some other way.
  • channels or elevations can be present on the lateral surface of the sink block, as are known from the so-called edge sink blocks.
  • Channels in stones made of refractory materials can be made using various methods.
  • E.g. granular refractory material can be introduced into a mold with needles or cores and compacted by pounding, shaking, vibrating or pressing.
  • Methods for producing pores or channels in refractory materials are e.g. known from DE-OS 25 11 997, EP-PS 0 083 919, AT-PS 288 860 or AT-PS 248 936.
  • the metal-coated gas purging plug is inserted into a perforated brick so that its upper end of the circular truncated cone protrudes out of the perforated brick into the interior of the pan. It is preferably shaped in such a way that only the gas-carrying inner chamber protrudes and is not enveloped by the perforated brick.
  • the non-gas-carrying outer chamber then preferably has the same height as the perforated brick.
  • Perforated brick and exposed end of the frustoconical gas purging plug are provided according to the invention with an additional outer covering made of refractory material.
  • This covering is produced in such a way that the gap between the pan bottom lining and the perforated brick is first poured out with refractory material and this layer is then compressed.
  • the compaction can be achieved, for example, by ramming, pouring or vibrating. Self-compacting material can also be used.
  • the end of the frustoconical gas purging plug protruding above the perforated brick is coated with the refractory material.
  • the metal layer which encompasses the free-standing end of the frustoconical gas purging plug, is preferably provided with fastening elements, so that the outer covering made of refractory material adheres particularly firmly.
  • Suitable fastening elements include slot pins, shaft anchors, V-anchors and welding beads.
  • other fastening elements are also suitable. E.g. elevations can also be provided in the metal jacket.
  • a frustoconical gas purging plug 1 is inserted into a perforated block 8.
  • the frustoconical gas purging plug 1 consists of two chambers.
  • the chamber 13 is gas-carrying, while the outer chamber 14 is non-gas-carrying.
  • the gases are passed from the base surface 5 to the top surface 15 of the truncated cone through the channels 2 in the chamber 13.
  • the frustoconical gas purging plug 1 only comprises the gas-carrying chamber 13.
  • This chamber section is encased in a metal jacket 6, but is no longer surrounded by the perforated brick 8 and projects into the interior of the pan via the pan base.
  • the circular frustoconical gas purging plug 1 is provided with a metal jacket 6 on its entire lateral surface and its base surface 5.
  • the metal jacket 6, which separates the chambers 13, 14, is also arranged between the gas-conducting chamber 13 and the non-gas-conducting chamber 14, which concentrically surrounds this and forms an intermediate layer between the perforated brick 8 and the gas-conducting chamber 13.
  • the top surface 15 is not coated.
  • a gas supply pipe 7 is attached centrally to the base 5 of the gas purging plug. Gas is fed via this tube to the gas purging plug 1, through which it flows through the channels 2.
  • gas purging stone 1 and perforated stone 8 are completely coated with a covering 11 made of refractory material.
  • the refractory material has been introduced into the gap 12 between perforated brick 8 and pan bottom delivery 10 and has been filled up to the top surface 15 of the brick.
  • the metal jacket is equipped with fastening elements 16 which serve to anchor the outer sheath 11.
  • blowing surface is protected against turbulence of the melt to such an extent that the wear is considerably reduced by a blowing device constructed in this way.
  • blowing devices customary according to the prior art there is severe wear between the metal layer, sleeve, perforated brick and adjoining pan floor stones, which is caused by strong turbulence in the melt.
  • these disadvantages are avoided, so that the durability is at least 5 times that of the devices customary hitherto and thus lasts up to an entire pan journey.
  • the common metal sheathing of both chambers of the gas purging plug 1 also ensures reliable replacement of the gas purging plugs without damaging the perforated brick.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Treatment Of Steel In Its Molten State (AREA)
  • Carbon Steel Or Casting Steel Manufacturing (AREA)
  • Furnace Charging Or Discharging (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)
  • Chemical Or Physical Treatment Of Fibers (AREA)
  • Polarising Elements (AREA)
  • Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
  • Absorbent Articles And Supports Therefor (AREA)
  • Gas Separation By Absorption (AREA)
  • Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
  • Furnace Housings, Linings, Walls, And Ceilings (AREA)
EP89123547A 1988-12-22 1989-12-20 Installation d'injection Revoked EP0376142B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89123547T ATE97168T1 (de) 1988-12-22 1989-12-20 Einblasvorrichtung.

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE3843149 1988-12-22
DE3843149 1988-12-22
DE3907383A DE3907383A1 (de) 1988-12-22 1989-03-08 Einblasvorrichtung
DE3907383 1989-03-08

Publications (2)

Publication Number Publication Date
EP0376142A1 true EP0376142A1 (fr) 1990-07-04
EP0376142B1 EP0376142B1 (fr) 1993-11-10

Family

ID=25875447

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89123547A Revoked EP0376142B1 (fr) 1988-12-22 1989-12-20 Installation d'injection

Country Status (11)

Country Link
US (1) US4991825A (fr)
EP (1) EP0376142B1 (fr)
JP (2) JPH02263565A (fr)
KR (1) KR900009143A (fr)
AT (1) ATE97168T1 (fr)
AU (1) AU628899B2 (fr)
CA (1) CA2006112A1 (fr)
DE (2) DE3907383A1 (fr)
ES (1) ES2048268T3 (fr)
MX (1) MX172108B (fr)
NZ (1) NZ231955A (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2069454A1 (es) * 1991-02-22 1995-05-01 Didier Werke Ag Elemento refractario para el insuflado de gas en coladas metalurgicas.
RU173109U1 (ru) * 2016-08-09 2017-08-11 Закрытое акционерное общество "Ферро Балт Плюс" Устройство для продувки металла газами в ковше

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4024698A1 (de) * 1989-10-04 1991-04-18 Cookson Plibrico Gmbh Einblasvorrichtung
DE4126237A1 (de) * 1991-08-08 1993-03-04 Radex Heraklith Vorgefertigtes einbauelement fuer elektro-lichtbogenoefen und zugehoeriger elektro-lichtbogenofen
TW206260B (fr) * 1991-09-25 1993-05-21 Air Prod & Chem
US5249778A (en) * 1992-04-14 1993-10-05 Dolomitwerke Gmbh Gas stir plug device with visual wear indicator
CH699948A2 (de) * 2008-11-17 2010-05-31 Stopinc Ag Behälter für Metallschmelze sowie ein Verfahren zur auswechselbaren Befestigung eines feuerfesten Spülsteins oder einer feuerfesten Hülse.

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2811346A (en) * 1952-01-21 1957-10-29 L Air Liquide Sa Pour L Etudes Device for insufflating gas into a mass of molten metal
US3610602A (en) * 1969-10-14 1971-10-05 United States Steel Corp Gas-permeable refractory plug and method
DE3631521A1 (de) * 1986-09-17 1988-04-07 Burbach & Bender Ohg Gasspuelvorrichtung

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4922484U (fr) * 1972-05-31 1974-02-26
SE392479B (sv) * 1974-03-20 1977-03-28 Asea Ab Forma vid metallurgiska konvertrar och smeltugnar
JPS6032355B2 (ja) * 1978-11-22 1985-07-27 三菱電機株式会社 半導体装置の製造方法
GB2102926B (en) * 1981-06-03 1985-05-15 Nippon Kokan Kk Gas blowing nozzle, and production and usage thereof
AU541441B2 (en) * 1981-07-15 1985-01-10 Nippon Steel Corporation Bottom blowing nozzle embedded in a refractory block
DE3247716A1 (de) * 1982-12-23 1984-07-12 Didier-Werke Ag, 6200 Wiesbaden Vorrichtung zum einfuehren von gasen in metallurgische gefaesse
GB8323252D0 (en) * 1983-08-30 1983-09-28 Steer C A Wheelbarrow
DE8522350U1 (de) * 1985-08-02 1987-02-26 Burbach & Bender Ohg Esb Schweissbetrieb, 5900 Siegen Gasspülstein für metallurgische Gefäße
DE3625478A1 (de) * 1985-08-02 1987-02-12 Burbach & Bender Ohg Gasspuelstein fuer metallurgische gefaesse
US4725047A (en) * 1985-08-26 1988-02-16 Labate M D Device for introducing gas into molten metal
DE8620206U1 (de) * 1986-07-28 1987-08-27 Burbach & Bender Ohg Esb Schweissbetrieb, 5900 Siegen Vorrichtung zur Herstellung eines Formsteins für eine Gasspüleinrichtung
DE8716110U1 (de) * 1986-12-05 1988-02-04 Nöh, Friedhelm, 5900 Siegen Gasspülstein
DE3642623A1 (de) * 1986-12-13 1988-06-23 Burbach & Bender Ohg Gasspuelstein fuer metallurgische gefaesse

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2811346A (en) * 1952-01-21 1957-10-29 L Air Liquide Sa Pour L Etudes Device for insufflating gas into a mass of molten metal
US3610602A (en) * 1969-10-14 1971-10-05 United States Steel Corp Gas-permeable refractory plug and method
DE3631521A1 (de) * 1986-09-17 1988-04-07 Burbach & Bender Ohg Gasspuelvorrichtung

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN, Band 9, Nr. 104 (C-279)[1827], 8. Mai 1985; & JP-A-59 229 408 (NIPPON KOKAN) *
SOVIET INVENTIONS ILLUSTRATED, Woche 79-B45, 19. Dezember 1979, Derwent Publications Ltd, London, GB; & SU-A-648 343 (CHERP METAL WKS) *
STAHL U. EISEN, Band 96, Nr. 21, 21. Oktober 1976, Seiten 1056-1057; "Betreibsergebnisse mit der Spülgasbehandlung von Stahl in der Giesspfanne" *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2069454A1 (es) * 1991-02-22 1995-05-01 Didier Werke Ag Elemento refractario para el insuflado de gas en coladas metalurgicas.
RU173109U1 (ru) * 2016-08-09 2017-08-11 Закрытое акционерное общество "Ферро Балт Плюс" Устройство для продувки металла газами в ковше

Also Published As

Publication number Publication date
MX172108B (es) 1993-12-03
DE58906171D1 (de) 1993-12-16
ES2048268T3 (es) 1994-03-16
AU4695889A (en) 1990-06-28
NZ231955A (en) 1992-07-28
CA2006112A1 (fr) 1990-06-22
US4991825A (en) 1991-02-12
DE3907383C2 (fr) 1990-12-20
KR900009143A (ko) 1990-07-02
ATE97168T1 (de) 1993-11-15
EP0376142B1 (fr) 1993-11-10
DE3907383A1 (de) 1990-09-20
JPH08454U (ja) 1996-03-08
AU628899B2 (en) 1992-09-24
JP2535879Y2 (ja) 1997-05-14
JPH02263565A (ja) 1990-10-26

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