EP1101825B1 - Feuerfester keramischer Gasspülstein - Google Patents
Feuerfester keramischer Gasspülstein Download PDFInfo
- Publication number
- EP1101825B1 EP1101825B1 EP00120224A EP00120224A EP1101825B1 EP 1101825 B1 EP1101825 B1 EP 1101825B1 EP 00120224 A EP00120224 A EP 00120224A EP 00120224 A EP00120224 A EP 00120224A EP 1101825 B1 EP1101825 B1 EP 1101825B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- gas
- ceramic body
- ceramic
- purging plug
- gas purging
- 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 - Lifetime
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D3/00—Charging; Discharging; Manipulation of charge
- F27D3/16—Introducing a fluid jet or current into the charge
-
- 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
-
- 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
- C21C5/48—Bottoms or tuyéres of converters
Definitions
- the invention relates to a refractory ceramic Gas purging plug, as it has been in secondary metallurgy since long known.
- Such gas purging plug are usually in the wall or in the bottom of the metallurgical treatment vessel and used here mostly by means of a perforated brick.
- a Overview of different training forms of such Gas Pattersonsteine gives the Radex Rundschau 1987, 288th After Gas purifiers can be particularly in such with so-called directed porosity and those with structured so-called undirected porosity.
- Goal of gas purging, for example in a steel ladle are in particular a fast temperature and Concentration of the steel bath and its Cleaning.
- non-metallic inclusions should use the gas flow faster in the on the Molten bath of floating slag to be transported.
- the Homogenization of the steel bath becomes a high Gas throughput required, dealing with gas purging, the have a directional porosity, the most economical reach. This can be the directional Porosity through gas channels with circular cross section or Gaskanäle reached with slit-shaped cross-section become.
- the cleaning of the steel bath can be done by many small Achieve gas bubbles best at low pressure.
- Here shows a gas purging plug with undirected porosity Advantages over a dishwasher with directional Porosity.
- a dishwasher with undirected porosity points in the case molten metal infiltration has the disadvantage that he, if the melt is frozen, only conditionally can be put back into operation. In any case this requires a considerable gas pressure in the Result leads to that the infiltrated zone is blown off. This will reduce the wear of the Gas Kunststoffsteins increased dramatically.
- the invention is based on the object, a offer generic gas purging, with the one good cleaning of the steel bath is possible, the one shows as little wear and a good Homogenization of the steel bath allows.
- the basic idea of the invention is the above described advantages of a gas purging plug with undirected porosity with the advantages of a Gas purging plug to connect with directed porosity.
- the invention is based on the knowledge, to form a gas purging plug so that it has sections with directed porosity the passage of gas under high pressure allows and over sections with undirected porosity the gas flow in many small Gas bubbles divides the cleaning of the steel bath promote.
- the ceramic Body (with undirected porosity) be one-piece. at he will continue along at least a part of its peripheral surface (preferably over the entire height) with a burnable material and then circumferentially of a gas-tight ceramic material wrapped.
- the gas-tight ceramic material of a consist of monolithic mass, for example, in an annulus between a mold and the ceramic Body is filled; but it is also possible the gas-tight ceramic material of a form prefabricated molding, which on the ceramic body is placed.
- the burnable material for example, a Be film strips, for example, an adhesive tape or an adhesive film.
- the at least one gas passage through at least one channel-like depression in at least one of the corresponding surface sections formed adjacent parts of the ceramic body become.
- Such purging devices are known as Slit flush, although basically known, the individual parts of the ceramic body - outside the called slots - but of a gas-tight material exist, while according to the invention with undirected Porosity are formed.
- the cross-sectional shape of the gas purging plug and / or the Ceramic body can be basically arbitrary. Out installation-technical reasons has been in the past Decades, however, a truncated cone shape for the Gas purging plug proved to be advantageous. Independently thereof, according to one embodiment of the ceramic Body have a rectangular cross-section.
- the ceramic Body consists of at least two, for example, but also three or four "plates", where the said slot-like channels between each corresponding surface portions of adjacent parts be formed of the ceramic body.
- the ceramic body in such a way that its cross-section, for example Rectangular cross section, reduced from its gas supply end to the gas outlet side end face of the gas purging plug.
- spaced apart slot-shaped Channels in the interface area between the ceramic Body and the surrounding gas-tight material can also the entire peripheral surface of the ceramic body with occupied a burn-out, thin strip of material which burns out later (in case of fire) and so on a circumferential gas slot between the ceramic Body and the gas-tight material creates.
- the ceramic body on a ceramic insert with unsupported or directed porosity, wherein the ceramic insert and the ceramic body a different cross-sectional geometry and / or a may have different cross-sectional area. ever According to embodiment, the ceramic body is on this Way through the interlocking gas-tight ceramic Material additionally held.
- the ceramic body can be at least over two thirds of the total height of the gas sink.
- the ceramic body may as well as the mentioned ceramic insert of any refractory Material exist, for example, a non-basic Dimensions.
- the described gas flushing device has the following advantages: On the one hand, a high gas flow over the directed porosity (the gas channels, gas slots) is achieved; On the other hand, can be achieved on the undirected porosity of the ceramic body advantageous gas bubble formation.
- Gas slots are usually either the undirected pores or the gas slots are not infiltrated, so that normally at least one Gas flushing section after a delay Interruption can be reactivated.
- Washed over the slots after a break can infiltrations in the area of the ceramic body be slowly blown out, so that chipping (a Wear) either completely prevented or at least be reduced.
- the density surrounding the porous ceramic body Mass for example, consist of a cast concrete can, at the same time prevents a leading Wear of an associated perforated stone inner surface into which the gas purging plug is used as it is like a sleeve protects the hole stone.
- the reference numeral 10 of Figure 1 describes a Gas Jardinstein total. This consists of a ceramic body 12 with undirected porosity, the from an upper end face 10s of the gas purging plug 10 over about two thirds of the total height of the Gas Whysteins 10 extends down and thereby in the Cross-section enlarged. At the bottom of 12u is the ceramic body 12 on a ceramic insert 14 with undirected porosity up to the bottom End surface 10u of the gas purging plug 10 runs, the of a metal sheet 16 is covered, which has a central Opening 16o, in which a gas supply line 18th opens, which is welded to the bottom plate 16.
- Both the ceramic body 12 and the ceramic Insert 14 are enveloped by a gas-tight material 20, which extends from the lower end 10u to the upper end face 10s of the gas purging plug 10 extends.
- the ceramic body 12 with undirected porosity a square cross-section on.
- the area of two opposite outer surfaces 12r, 121, ie in the interface area between the ceramic body 12 and the gas-tight material 20 is each formed about a 0.5 mm wide slot 22, which extends over the entire height of the ceramic body 12 extends.
- FIG. 2 shows correspondingly that the gas purging plug 10 is next to an undirected porosity in the region of the body 12 with directed porosity (gas slots 22) in the Interface area between body 12 and gas-tight Material 20 is formed.
- the ceramic body 12 of three sections 12.1, 12.2, 12.3, with their corresponding surfaces lie against each other and a total again have square cross-sectional area.
- Parts 12.1 and 12.2 are along their surfaces to the adjacent parts 12.2, 12.3 each with slit-like Recesses 22 are formed, which together with the corresponding surfaces of the adjacent parts 12.2, 12.3 gas slots 22 in the sense of a directed Represent porosity.
- FIG. 4 A slightly modified embodiment is shown in FIG. 4, according to which the ceramic body 12 consists of two parts 12.1, 12.2, according to the parts 12.1, 12.2 after Figure 3 are formed. That means, also run here between corresponding surface sections of the parts 12.1, 12.2 slot-shaped flushing channels 22.
- ceramic insert 14 with undirected porosity has a truncated cone shape, that is a circular cross section, so that he as Resttownnan Attache can be used, as above shown.
- the gas supply takes place in all embodiments via the gas supply line 18 through the ceramic insert 14th both about the undirected pores within the ceramic body 12 as well as over in or around the ceramic body 12 around extending slots 22 in a metallurgical melt.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Treatment Of Steel In Its Molten State (AREA)
- Carbon Steel Or Casting Steel Manufacturing (AREA)
- Furnace Charging Or Discharging (AREA)
- Incineration Of Waste (AREA)
Description
- mindestens einen keramischen Körper mit ungerichteter Porosität, der sich von einem gaszuführseitigen Ende bis zu einer gasauslaßseitigen Stirnfläche des Gasspülsteines erstreckt,
- ein gasdichtes keramisches Material, welches den keramischen Körper mindestens im Bereich seiner Umfangsfläche umgibt, wobei
- im Grenzflächenbereich zwischen dem keramischen Körper und dem gasdichten keramischen Material und/oder innerhalb des keramischen Körpers mindestens ein Gaskanal ausgebildet ist, der sich von einem gaszuführseitigen Ende bis zu der gasauslaßseitigen Stirnfläche des Gasspülsteines erstreckt.
Rechteckquerschnitt, von seinem gaszuführseitigen Ende zur gasauslaßseitigen Stirnfläche des Gasspülsteins verringert.
Einerseits wird ein hoher Gasdurchfluß über die gerichtete Porosität (die Gaskanäle, Gasschlitze) erreicht; andererseits läßt sich über die ungerichtete Porosität des keramischen Körpers eine vorteilhafte Gasblasenausbildung erreichen.
- Figur 1:
- einen Längsschnitt durch einen erfindungsgemäßen Gasspülstein.
- Figur 2:
- einen Horizontalschnitt entlang der Ebene 2-2 gemäß Figur 1.
- Figur 3:
- einen Horizontalschnitt entlang der Ebene 2-2 nach Figur 1 für eine weitere Ausführungsform.
- Figur 4:
- einen Horizontalschnitt entlang der Ebene 2-2 nach Figur 1 für eine dritte Ausführungsform.
Claims (11)
- Feuerfester keramischer Gasspülstein (10) mit folgenden Merkmalen:1.1 mindestens einem keramischen Körper (12) mit ungerichteter Porosität, der sich von einem gaszuführseitigen Ende (12u) bis zu einer gasauslaßseitigen Stirnfläche (10s) des Gasspülsteins (10) erstreckt,1.2 einem gasdichten keramischen Material (20), welches den keramischen Körper (12) mindestens im Bereich seiner Umfangsfläche (12l, 12r, 12h, 12t) umgibt, wobei1.3 im Grenzflächenbereich zwischen dem keramischen Körper (12) und dem gasdichten keramischen Material (20) und/oder innerhalb des keramischen Körpers (12) mindestens ein schlitzförmiger Gaskanal (22) ausgebildet ist, der sich von einem gaszuführseitigen Ende (12u) bis zu der gasauslaßseitigen Stirnfläche (10s) des Gasspülsteins (10) erstreckt.
- Gasspülstein nach Anspruch 1, bei dem der keramische Körper (12) in Gaszuführrichtung geteilt ausgebildet ist und der mindestens eine Gaskanal (22) zwischen korrespondierenden Flächenabschnitten benachbarter Teile (12.1, 12.2, 12.3) des keramischen Körpers (12) ausgebildet ist.
- Gasspülstein nach Anspruch 2, bei dem der mindestens eine Gaskanal (22) durch mindestens eine kanalartige Vertiefung in mindestens einem der korrespondierenden Flächenabschnitte benachbarter Teile (12.1, 12.2, 12.3) des keramischen Körpers (12) ausgebildet ist.
- Gasspülstein nach Anspruch 1, bei dem der keramische Körper (12) einen Rechteckquerschnitt aufweist.
- Gasspülstein nach Anspruch 1, bei dem sich die Rechteckquerschnitte des keramischen Körpers (12) von seinem gaszuführseitigen Ende (12u) zur gasauslaßseitigen Stirnfläche (10s) des Gasspülsteins (10) verringern.
- Gasspülstein nach Anspruch 1, bei dem sich der im Grenzflächenbereich zwischen dem keramischen Körper (12) und dem gasdichten Material (20) verlaufende Gaskanal (22) um den gesamten keramischen Körper (12) herum erstreckt.
- Gasspülstein nach Anspruch 1, bei dem der keramische Körper (12) auf einem keramischen Einsatz (14) mit ungerichteter oder gerichteter Porosität aufliegt, wobei der keramische Einsatz (14) und der keramische Körper (12) eine unterschiedliche Querschnittsgeometrie aufweisen.
- Gasspülstein nach Anspruch 7, bei dem der keramische Einsatz (14) und der keramische Körper (12) eine unterschiedliche Querschnittsfläche aufweisen.
- Gasspülstein nach Anspruch 1, bei dem das gasdichte keramische Material (20) ein gegossenes oder gestampftes Material ist.
- Gasspülstein nach Anspruch 1, bei dem das gasdichte keramische Material (20) von einem geformten Bauteil gebildet wird.
- Gasspülstein nach Anspruch 1, bei dem sich der keramische Körper (12) über mindestens zwei Drittel der Gesamthöhe des Gasspülsteins (10) erstreckt.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19954918A DE19954918C2 (de) | 1999-11-16 | 1999-11-16 | Feuerfester keramischer Gasspülstein |
DE19954918 | 1999-11-16 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1101825A1 EP1101825A1 (de) | 2001-05-23 |
EP1101825B1 true EP1101825B1 (de) | 2003-07-16 |
Family
ID=7929107
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP00120224A Expired - Lifetime EP1101825B1 (de) | 1999-11-16 | 2000-09-26 | Feuerfester keramischer Gasspülstein |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1101825B1 (de) |
AT (1) | ATE245202T1 (de) |
DE (2) | DE19954918C2 (de) |
ES (1) | ES2201981T3 (de) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7276205B2 (en) | 2002-06-07 | 2007-10-02 | Vesuvius Crucible Company | Injection device and process for the injection of a fluid |
WO2022075961A1 (en) * | 2020-10-05 | 2022-04-14 | Limited Liability Company "Innotech-Splav" | A method for treating a liquid metal with a gas medium in a metallurgic container and a device for performing the same |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10305232B3 (de) * | 2003-02-08 | 2004-08-05 | Refractory Intellectual Property Gmbh & Co.Kg | Feuerfester keramischer Gasspülstein |
EP2111938B1 (de) | 2008-04-24 | 2017-04-19 | Calderys France | Spülstein zum Einblasen von Gas in einen Metallbehandlungsbehälter |
DE102008029934B3 (de) * | 2008-06-26 | 2009-06-10 | Refractory Intellectual Property Gmbh & Co. Kg | Feuerfester keramischer Gasspülstein |
ES2563192T3 (es) * | 2014-01-09 | 2016-03-11 | Refractory Intellectual Property Gmbh & Co. Kg | Elemento de limpieza con gas y elemento de conexión de gas correspondiente |
DE102014015325A1 (de) * | 2014-10-17 | 2016-04-21 | Pa-Ha-Ge Feuerfeste Erzeugnisse Gmbh & Co. Kg | Spüler mit gestapelten Einsätzen |
KR101819913B1 (ko) | 2016-09-19 | 2018-01-18 | 한국내화 주식회사 | 다단형 포러스 플러그 |
US11408040B2 (en) | 2018-01-29 | 2022-08-09 | Refractory Intellectual Property Gmbh & Co. Kg | Gas purging plug, gas purging system, method for characterization of a gas purging plug and method for purging a metal melt |
WO2024089098A1 (en) | 2022-10-27 | 2024-05-02 | Refractory Intellectual Property Gmbh & Co. Kg | Refractory gas purging plug and method for controlling the conduction of gas to a refractory gas purging plug |
WO2024089095A1 (en) | 2022-10-27 | 2024-05-02 | Refractory Intellectual Property Gmbh & Co. Kg | Refractory gas purging plug |
WO2024089097A1 (en) | 2022-10-27 | 2024-05-02 | Refractory Intellectual Property Gmbh & Co. Kg | Refractory gas purging plug and a method for the production of a refractory gas purging plug |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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 |
DE3538498A1 (de) * | 1985-10-30 | 1987-05-07 | Didier Werke Ag | Einduesvorrichtung fuer metallurgische gefaesse |
DE3802657C1 (de) * | 1988-01-29 | 1989-09-21 | Didier-Werke Ag, 6200 Wiesbaden, De | |
DE3833502A1 (de) * | 1988-10-01 | 1990-04-05 | Didier Werke Ag | Gasspuelstein |
DE3907500C1 (en) * | 1989-03-08 | 1990-08-23 | Radex-Heraklith Industriebeteiligungs Ag, Wien, At | Gas bubble brick with directed porosity and method for its manufacture |
DE19542446C2 (de) * | 1995-11-14 | 1998-05-28 | Doetsch Geb Richard Marie Luis | Feuerfeste Formplatten mit Gasführungskanälen |
-
1999
- 1999-11-16 DE DE19954918A patent/DE19954918C2/de not_active Expired - Fee Related
-
2000
- 2000-09-26 ES ES00120224T patent/ES2201981T3/es not_active Expired - Lifetime
- 2000-09-26 AT AT00120224T patent/ATE245202T1/de active
- 2000-09-26 EP EP00120224A patent/EP1101825B1/de not_active Expired - Lifetime
- 2000-09-26 DE DE50002898T patent/DE50002898C5/de not_active Expired - Lifetime
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7276205B2 (en) | 2002-06-07 | 2007-10-02 | Vesuvius Crucible Company | Injection device and process for the injection of a fluid |
WO2022075961A1 (en) * | 2020-10-05 | 2022-04-14 | Limited Liability Company "Innotech-Splav" | A method for treating a liquid metal with a gas medium in a metallurgic container and a device for performing the same |
Also Published As
Publication number | Publication date |
---|---|
ATE245202T1 (de) | 2003-08-15 |
DE19954918C2 (de) | 2001-09-20 |
EP1101825A1 (de) | 2001-05-23 |
DE50002898C5 (de) | 2008-11-06 |
DE50002898D1 (de) | 2003-08-21 |
DE19954918A1 (de) | 2001-05-31 |
ES2201981T3 (es) | 2004-04-01 |
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