EP0181853A1 - Brique pour lavage au gaz pour fours et récipients métallurgiques - Google Patents

Brique pour lavage au gaz pour fours et récipients métallurgiques Download PDF

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Publication number
EP0181853A1
EP0181853A1 EP85890169A EP85890169A EP0181853A1 EP 0181853 A1 EP0181853 A1 EP 0181853A1 EP 85890169 A EP85890169 A EP 85890169A EP 85890169 A EP85890169 A EP 85890169A EP 0181853 A1 EP0181853 A1 EP 0181853A1
Authority
EP
European Patent Office
Prior art keywords
gas
gas supply
supply pipe
vessels
interior
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
EP85890169A
Other languages
German (de)
English (en)
Other versions
EP0181853B1 (fr
Inventor
Heinrich Illemann
Gustav-Mario Dipl. Ing. Heinricher
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.)
Radex Austria AG fur Feuerfeste E
Original Assignee
Radex Austria AG fur Feuerfeste Erzeugnisse
Osterreichisch Amerikanische Magnesit 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
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=3543142&utm_source=***_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0181853(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Radex Austria AG fur Feuerfeste Erzeugnisse, Osterreichisch Amerikanische Magnesit AG filed Critical Radex Austria AG fur Feuerfeste Erzeugnisse
Publication of EP0181853A1 publication Critical patent/EP0181853A1/fr
Application granted granted Critical
Publication of EP0181853B1 publication Critical patent/EP0181853B1/fr
Expired legal-status Critical Current

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Classifications

    • 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 invention relates to a gas purging plug for metallurgical furnaces and vessels.
  • gas purging stones which are generally referred to as gas purging stones, are increasingly being used for blowing various gases into metallurgical furnaces and vessels through their linings for the treatment of metals or metal melts.
  • gas purging plugs are mostly arranged in the floor, especially in converters for fresh iron, in pig iron pans, ladles and tundish when continuously casting steel, but can be found in all these units and also in other metallurgical furnaces and vessels, e.g. Arc furnaces or vessels for the treatment of non-ferrous metals, such as aluminum melting furnaces, can also be installed in the lining of the side walls.
  • Gas purging stones are either stones with a normal increased porosity, i.e. stones with an increased number of randomly distributed pores, or stones with a so-called directional porosity, these are stones in which a number of pores are in a desired direction throughout the whole Stone stretches, used. Stones with Directed porosity has the advantage that, if desired, fine-grained solid substances can also be suspended in carrier gases through the directed pores.
  • gas purging stones of the type usually used are typically used in various ways to improve the durability of gas purging stones, which are usually arranged in a perforated brick.
  • the Spülsteinboden known with sheet metal shrouded gas flushing brick, and in which at its from the furnace interior and G efäßinneren distal end which forms the Spülsteinboden and a gas feed pipe for the Passing gas through the gas purging plug into the molten metal to be treated, a spiral pipe for supplying the purge gas is connected to this gas supply pipe, the gas supply pipe and the spiral pipe being embedded in a refractory sintered material (FR-OS 24 51 945).
  • the spiral tube is intended to serve to melt metal that has entered the interior of the gas purging plug as a result of wear or cracks and / or as a result of an at least partial destruction of the sheet metal jacket at the hot end of the gas purging plug into it or between it and the perforated brick is to solidify and thereby prevent further flow out of the metallurgical furnace or vessel.
  • a known gas purging plug has the main disadvantage that it is not interchangeable and therefore interruptions in the operation of the furnace or vessel are necessary, since this plug despite the measures mentioned is subject to more rapid wear than the lining in its immediate vicinity.
  • a gas purging plug arranged in a refractory perforated brick in which the gas supply pipe is not directly connected to the gas purging plug, but is molded and molded into a refractory body, namely into the perforated brick itself or a refractory, block-like body arranged under the purging plug the gas purging line connected line coil, which may be spiral, is connected (DE-OS 31 10 204).
  • a breakthrough of metal cannot be prevented with this construction with certainty.
  • gas purging plugs which rest on a safety block at their end remote from the inside of the furnace or the inside of the vessel, which forms the purging stone base, and have a pipe system for the gas supply, which is formed by a double, partly vertical pipe coil and embedded in the safety block is (European patent application 105 868).
  • This division of the gas supply pipe divides a possibly penetrating liquid amount of metal, for example amount of steel, and thus its heat content, and further increases the surface area for more rapid solidification of the penetrated melt; in addition, solidification of metal melt which has penetrated is brought about by the fact that the gas supply pipe is also guided against the direction of the ferrostatic pressure.
  • the invention now aims to provide a gas purging plug for metallurgical furnaces and vessels, which is connected at its cold stone end remote from the furnace interior or vessel interior to a gas supply pipe and with which it is possible with the aid of simple measures to reduce the risk of a breakthrough Prevent metal melt through the gas supply pipe in an effective manner.
  • the invention relates to a refractory gas purging plug for metallurgical furnaces and vessels, which on the inside of the furnace or Ge Cold stone end lying inside the barrel is connected to a gas supply pipe and is characterized in that a fully formed metal core with a helically surrounding metal spiral is arranged centrally in the gas supply pipe and extends in the longitudinal direction thereof.
  • the gas feed pipe can be surrounded at least in its part adjoining the cold stone end by a protective pipe which is filled with a refractory mass.
  • the gas purging plug designated 1 in the drawing can have any shape, for example the shape of a cuboid or a conical shape as shown, and can be arranged, for example, in a perforated brick (not shown).
  • the refractory material from which the stone 1 is constructed is also irrelevant to the present invention and can be selected in accordance with the intended use of the stone.
  • the sink 1 shown also has directional pores 3 which extend in its longitudinal direction and pass from the cold stone end to the stone end facing the interior of the furnace or the interior of the vessel, the hot stone end.
  • the gas purging stone 1 is encased on its side surfaces by a sheet metal jacket 5 and has a sheet metal base 6 on its cold stone end 4 which lies away from the interior of the furnace or the inside of the vessel.
  • a gap-shaped intermediate space 7, which can be referred to as a gas supply gap, may be present between the cold stone end 4 and the sheet metal base 6 in order to ensure a uniform distribution of the gas flow supplied over the stone cross section.
  • the cold stone end 4 or the sheet metal base 6, if present, is connected to a gas feed pipe 8, through which the desired flushing gas or flushing medium is supplied to the gas flushing stone 1.
  • This coil 10, which suitably consists of steel wire and is wound around the metal core, is attached to the metal core 9 in a suitable manner, e.g. by welding (at 11) or by merely resilient embracing, and lies against the inner wall of the gas supply pipe 8.
  • the purging medium flows through the space remaining between the metal core 9 and the inner wall of the gas supply pipe 8 to the gas purging plug 1.
  • the metal core 9 in turn is attached to the gas supply pipe 8 (at 12), for example by welding or with the aid of screws or bolts, which come from the outside go through the wall of the gas supply pipe 8 inside.
  • the metal core 9 together with the coil 10 represents an effective breakthrough protection, because it is understandable that liquid metal, which may have broken through the gas purging plug 1 into the gas supply pipe 8, in this pipe through the metal core 9 and to the inner wall of this pipe adjacent coil 10 is forced to flow around the metal core several times, causing it to cool and shortly is frozen.
  • the gas supply pipe 8 can be concentrically surrounded at least in its part adjoining the cold stone end 4 by a protective pipe 13 which is filled with a refractory mass 14, in particular a casting compound.
  • This protective tube 13 with the refractory mass 14 prevents further spread of a possible breakthrough of liquid metal through the wall of the gas supply tube 8.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Carbon Steel Or Casting Steel Manufacturing (AREA)
  • Treatment Of Steel In Its Molten State (AREA)
  • Furnace Charging Or Discharging (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
EP85890169A 1984-09-18 1985-07-30 Brique pour lavage au gaz pour fours et récipients métallurgiques Expired EP0181853B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT2962/84 1984-09-18
AT0296284A AT383617B (de) 1984-09-18 1984-09-18 Gasspuelstein fuer metallurgische oefen und gefaesse

Publications (2)

Publication Number Publication Date
EP0181853A1 true EP0181853A1 (fr) 1986-05-21
EP0181853B1 EP0181853B1 (fr) 1988-01-27

Family

ID=3543142

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85890169A Expired EP0181853B1 (fr) 1984-09-18 1985-07-30 Brique pour lavage au gaz pour fours et récipients métallurgiques

Country Status (7)

Country Link
US (1) US4657226A (fr)
EP (1) EP0181853B1 (fr)
JP (1) JPS6173811A (fr)
AT (1) AT383617B (fr)
CA (1) CA1257091A (fr)
DE (1) DE3561516D1 (fr)
ES (1) ES296151Y (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0362475A2 (fr) * 1988-10-01 1990-04-11 Didier-Werke Ag Brique pour rinçage au gaz
US4978108A (en) * 1988-10-01 1990-12-18 Didier-Werke Ag Gas washing sink without integral closure member
US4995596A (en) * 1988-10-01 1991-02-26 Didier-Werke Ag Apparatus for repairing a perforated brick in a metallurgical vessel
US5007621A (en) * 1988-10-01 1991-04-16 Didier-Werke Ag Apparatus for mounting a gas washing sink in a centered manner in perforated brick

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3810098C1 (fr) * 1988-03-25 1989-03-23 Radex-Heraklith Industriebeteiligungs Ag, Wien, At
US4938461A (en) * 1989-06-02 1990-07-03 Zedmark Refractories Corp. Device for distributing gas into molten metal
US5104097A (en) * 1990-09-14 1992-04-14 Martin & Pagenstecher Gmbha Gas stir plugs with slots and method of making the same
US5249778A (en) * 1992-04-14 1993-10-05 Dolomitwerke Gmbh Gas stir plug device with visual wear indicator
US5544867A (en) * 1995-03-13 1996-08-13 Neyer; Richard H. Apparatus and process for transporting molten metal
JP2011194457A (ja) * 2010-03-23 2011-10-06 Kurosaki Harima Corp ガス吹き込み用プラグの設置構造
CN103470869B (zh) * 2013-09-04 2015-06-17 贵州师范大学 钢壳复合流钢管及其制作方法
CN107385153B (zh) * 2017-09-05 2022-09-20 武汉科技大学 一种能将冶金炉内金属熔体的运动状态搅拌呈螺旋流的透气砖制作方法

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3395910A (en) * 1965-12-01 1968-08-06 Union Carbide Corp Metallurgical tuyere
GB1210314A (en) * 1967-02-01 1970-10-28 Yawata Iron & Steel Co Device for plugging a gas inlet in a molten metal refining container
DE2243200A1 (de) * 1972-09-01 1974-03-07 Voest Ag Behaelter fuer schmelzfluessige metalle
DE1458806C3 (de) * 1964-06-18 1975-01-30 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude, Paris Vorkammer zum Einleiten von Gasen durch einen Poröskörper in ein metallurgisches Gefäß
FR2451945A1 (fr) * 1979-03-19 1980-10-17 Est Aciers Fins Tuyere de brassage de bain de metal liquide
DE3110204A1 (de) * 1981-03-17 1982-10-14 Didier-Werke Ag, 6200 Wiesbaden Vorrichtung zum einfuehren von gasen in metallurgische gefaesse
DE8129091U1 (de) * 1981-10-05 1983-01-27 Sindelar, Günter, Dr.-Ing., 5102 Würselen "metallurgisches gefaess"
EP0105868A1 (fr) * 1982-10-06 1984-04-18 Österreichisch-Amerikanische Magnesit Aktiengesellschaft Four métallurgique ou récipient métallurgique

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR90233E (fr) * 1966-06-27 1967-11-03 Air Liquide Perfectionnement aux injecteurs, tuyères et brûleurs pour fours métallurgiques
US3610602A (en) * 1969-10-14 1971-10-05 United States Steel Corp Gas-permeable refractory plug and method
FR2455008A1 (fr) * 1979-04-25 1980-11-21 Siderurgie Fse Inst Rech Piece refractaire a permeabilite selective et orientee pour l'insufflation d'un fluide
SU1036754A1 (ru) * 1980-11-17 1983-08-23 Производственное Объединение "Ждановтяжмаш" Фурма донного дуть
US4396179A (en) * 1982-05-28 1983-08-02 Labate M D Device for introducing gas into molten metal

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1458806C3 (de) * 1964-06-18 1975-01-30 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude, Paris Vorkammer zum Einleiten von Gasen durch einen Poröskörper in ein metallurgisches Gefäß
US3395910A (en) * 1965-12-01 1968-08-06 Union Carbide Corp Metallurgical tuyere
GB1210314A (en) * 1967-02-01 1970-10-28 Yawata Iron & Steel Co Device for plugging a gas inlet in a molten metal refining container
DE2243200A1 (de) * 1972-09-01 1974-03-07 Voest Ag Behaelter fuer schmelzfluessige metalle
FR2451945A1 (fr) * 1979-03-19 1980-10-17 Est Aciers Fins Tuyere de brassage de bain de metal liquide
DE3110204A1 (de) * 1981-03-17 1982-10-14 Didier-Werke Ag, 6200 Wiesbaden Vorrichtung zum einfuehren von gasen in metallurgische gefaesse
DE8129091U1 (de) * 1981-10-05 1983-01-27 Sindelar, Günter, Dr.-Ing., 5102 Würselen "metallurgisches gefaess"
EP0105868A1 (fr) * 1982-10-06 1984-04-18 Österreichisch-Amerikanische Magnesit Aktiengesellschaft Four métallurgique ou récipient métallurgique

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN, Band 5, Nr. 168 (C-77)[840], 27. Oktober 1981; & JP - A - 56 96035 (KAWASAKI SEITETSU) 03.08.1981 *
PATENT ABSTRACTS OF JAPAN, Band 6, Nr. 19 (C-90)[897], 3. Februar 1982; & JP - A - 56 142 813 (ATSUJI TETSUKOU) 07.11.1981 *

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0362475A2 (fr) * 1988-10-01 1990-04-11 Didier-Werke Ag Brique pour rinçage au gaz
EP0362475A3 (fr) * 1988-10-01 1990-10-10 Didier-Werke Ag Brique pour rinçage au gaz
US4971295A (en) * 1988-10-01 1990-11-20 Didier-Werke Ag Safety-type gas washing sink having improved heat dissipation properties
US4978108A (en) * 1988-10-01 1990-12-18 Didier-Werke Ag Gas washing sink without integral closure member
US4995596A (en) * 1988-10-01 1991-02-26 Didier-Werke Ag Apparatus for repairing a perforated brick in a metallurgical vessel
US5007621A (en) * 1988-10-01 1991-04-16 Didier-Werke Ag Apparatus for mounting a gas washing sink in a centered manner in perforated brick
US5056762A (en) * 1988-10-01 1991-10-15 Didier-Werke Ag Apparatus for mounting a gas washing sink in a centered manner in a perforated brick

Also Published As

Publication number Publication date
JPS6173811A (ja) 1986-04-16
ES296151U (es) 1987-10-16
AT383617B (de) 1987-07-27
DE3561516D1 (en) 1988-03-03
CA1257091A (fr) 1989-07-11
ES296151Y (es) 1988-04-16
US4657226A (en) 1987-04-14
ATA296284A (de) 1986-12-15
EP0181853B1 (fr) 1988-01-27

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