EP0181853B1 - Brique pour lavage au gaz pour fours et récipients métallurgiques - Google Patents
Brique pour lavage au gaz pour fours et récipients métallurgiques Download PDFInfo
- Publication number
- EP0181853B1 EP0181853B1 EP85890169A EP85890169A EP0181853B1 EP 0181853 B1 EP0181853 B1 EP 0181853B1 EP 85890169 A EP85890169 A EP 85890169A EP 85890169 A EP85890169 A EP 85890169A EP 0181853 B1 EP0181853 B1 EP 0181853B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- gas
- stone
- vessels
- gas supply
- supply pipe
- 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
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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, particularly in converters for fresh iron, in pig iron pans, pouring 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 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 have 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 commonly used are of the type commonly used, their durability is less than that of the refractory lining in their vicinity in the relevant furnace or vessel, and then downtimes for this furnace or this vessel result from the premature wear of the gas purging stones. Attempts have therefore already been made in various ways to improve the durability of gas detection stones, which are usually arranged in a perforated stone.
- a gas purging plug encased in sheet metal is known on its side walls and on its bottom surface, the purging stone floor, through the interior of which metal plates extend and at its end remote from the interior of the furnace or vessel, which forms the paving stone floor, and a gas supply pipe for the passage of gas through the gas purging plug into the metal melt to be treated, a spiral pipe for supplying the purging 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 2451 945).
- the spiral tube is intended to serve to melt metal that has entered the interior of the gas purging stone 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 stone into it or between it and the perforated stone is to solidify and thereby prevent further flow out of the metallurgical furnace or vessel.
- a known gas purging plug has the particular disadvantage that it cannot be replaced and interruptions in the operation of the furnace or vessel are therefore necessary, since, despite the measures mentioned, this brick 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 connected directly to the gas purging plug, but instead 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 3110204).
- 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 interior of the furnace or vessel, which forms the purging stone floor, 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 105868).
- 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 105868).
- 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 the aid of which simple measures are possible 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 is connected at its cold stone end remote from the furnace interior or vessel interior to a gas supply pipe and is characterized in that a fully formed metal core with a helical shape extends centrally in the gas supply pipe and extends in the longitudinal direction thereof surrounding coil of metal is arranged.
- the gas supply pipe at least in its part adjoining the cold stone end, can be surrounded concentrically by a protective pipe which is filled with a refractory mass.
- the invention is explained in more detail with reference to the drawing, in which a gas purge provided with a sheet metal jacket is shown schematically in partial section stone is shown with a gas supply pipe and a surrounding protective pipe.
- 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 In addition to normal, that is to say randomly distributed, undirected pores 2, the sink 1 shown also has directed 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 lying away from the inside of the furnace or inside of the vessel.
- a gap-shaped intermediate space 7, which can be referred to as a gas supply gap, can 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, for. B. by welding (at 11) or by sheer resilient embracing, and lies on 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 is in turn attached to the gas supply pipe 8 (at 12), for example by welding or with the aid of screws or bolts, which come from outside go through the wall of the gas supply pipe 8 inside.
- the metal core 9 together with the helix 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 helix 10 is forced to flow around the metal core several times, whereby it is cooled and soon solidified.
- 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)
Claims (2)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT0296284A AT383617B (de) | 1984-09-18 | 1984-09-18 | Gasspuelstein fuer metallurgische oefen und gefaesse |
AT2962/84 | 1984-09-18 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0181853A1 EP0181853A1 (fr) | 1986-05-21 |
EP0181853B1 true 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) |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3810098C1 (fr) * | 1988-03-25 | 1989-03-23 | Radex-Heraklith Industriebeteiligungs Ag, Wien, At | |
DE3833506A1 (de) * | 1988-10-01 | 1990-04-05 | Didier Werke Ag | Vorrichtung zum aufspritzen einer ausbesserungsmasse auf einen lochstein |
DE3833502A1 (de) * | 1988-10-01 | 1990-04-05 | Didier Werke Ag | Gasspuelstein |
DE3833504A1 (de) * | 1988-10-01 | 1990-04-05 | Didier Werke Ag | Gasspueleinrichtung |
DE3833503A1 (de) * | 1988-10-01 | 1990-04-05 | Didier Werke Ag | Gasspuelstein |
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 |
Family Cites Families (13)
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 |
FR1407225A (fr) * | 1964-06-18 | 1965-07-30 | Siderurgie Fse Inst Rech | Dispositif de sécurité pour l'insufflation d'un gaz dans un récipient contenant un métal en fusion |
US3395910A (en) * | 1965-12-01 | 1968-08-06 | Union Carbide Corp | Metallurgical tuyere |
US3541604A (en) * | 1967-02-01 | 1970-11-17 | Nippon Steel Corp | Gas insufflating means for a molten metal refining container |
US3610602A (en) * | 1969-10-14 | 1971-10-05 | United States Steel Corp | Gas-permeable refractory plug and method |
DE2243200C3 (de) * | 1972-09-01 | 1979-09-13 | Vereinigte Oesterreichische Eisen- Und Stahlwerke - Alpine Montan Ag, Wien | Behälter für schmelzflussige Metalle |
FR2451945A1 (fr) * | 1979-03-19 | 1980-10-17 | Est Aciers Fins | Tuyere de brassage de bain de metal liquide |
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 |
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" |
US4396179A (en) * | 1982-05-28 | 1983-08-02 | Labate M D | Device for introducing gas into molten metal |
AT376455B (de) * | 1982-10-06 | 1984-11-26 | Oesterr Amerikan Magnesit | Metallurgischer ofen oder metallurgisches gefaess |
-
1984
- 1984-09-18 AT AT0296284A patent/AT383617B/de not_active IP Right Cessation
-
1985
- 1985-07-30 EP EP85890169A patent/EP0181853B1/fr not_active Expired
- 1985-07-30 DE DE8585890169T patent/DE3561516D1/de not_active Expired
- 1985-09-09 JP JP60197869A patent/JPS6173811A/ja active Pending
- 1985-09-16 US US06/776,441 patent/US4657226A/en not_active Expired - Fee Related
- 1985-09-17 CA CA000490872A patent/CA1257091A/fr not_active Expired
- 1985-09-17 ES ES1985296151U patent/ES296151Y/es not_active Expired
Also Published As
Publication number | Publication date |
---|---|
US4657226A (en) | 1987-04-14 |
CA1257091A (fr) | 1989-07-11 |
ES296151Y (es) | 1988-04-16 |
AT383617B (de) | 1987-07-27 |
JPS6173811A (ja) | 1986-04-16 |
EP0181853A1 (fr) | 1986-05-21 |
DE3561516D1 (en) | 1988-03-03 |
ATA296284A (de) | 1986-12-15 |
ES296151U (es) | 1987-10-16 |
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