WO1997043062A1 - Gasspüleinrichtung - Google Patents
Gasspüleinrichtung Download PDFInfo
- Publication number
- WO1997043062A1 WO1997043062A1 PCT/EP1997/002135 EP9702135W WO9743062A1 WO 1997043062 A1 WO1997043062 A1 WO 1997043062A1 EP 9702135 W EP9702135 W EP 9702135W WO 9743062 A1 WO9743062 A1 WO 9743062A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- gas purging
- purging device
- channel
- viewed
- gas
- Prior art date
Links
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
-
- 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
-
- 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 gas purging device made of a refractory, ceramic material for metallurgical melting vessels.
- Gas purging devices in the form of gas purging stones can be divided into the following main categories:
- Gas purging stones with "directed porosity" Such gas purging stones have continuous channels within the refractory, ceramic matrix material, which are fed with gas, possibly also with gas / solid mixtures, from a central gas supply.
- gas purging stones with "non-directional porosity" in which the gas flow takes place via the open porosity of the ceramic material.
- the invention is based on the object of constructively solving the approach given in WO 95/33587 for a gas purging device with a high gas throughput in the sense of high infiltration inhibition.
- a gas flushing device made of a refractory, ceramic material for metallurgical vessels with at least one, essentially cylindrical flushing channel (flushing slot) is proposed, in which the flushing channel, viewed in the axial direction, at least on its the end facing the molten metal has alternating characteristics in the radial direction.
- the course of the rinsing channel which alternates radially in the axial direction of the rinsing channel, surprisingly leads to a considerable inhibition of the tendency to infiltration of molten metal.
- Preliminary tests have shown that the alternating course leads to metal melt possibly penetrating into the rinsing channel being "braked" in the region of the deflections. This is particularly important at the end of the gas purging device facing the metal melt, so that the steel melt only penetrates into the gas purging device over the smallest possible section.
- the refractory, ceramic matrix material of the gas purging device has a relatively high temperature, which is close to the temperature of the molten steel.
- the invention provides various specific embodiments:
- the characteristics - viewed in the longitudinal section (in the direction of rinsing) - can be meandering.
- An alternative embodiment provides a wave-shaped course of the forms. A sub-case of this is the sinusoidal course of the forms.
- An additional infiltration inhibition can be achieved in an embodiment in which the wave-shaped course of the forms in the longitudinal section consists of short sections which run at an acute angle of inclination to the horizontal and long sections which run at an obtuse angle of inclination to the horizontal.
- a lower flow velocity of the melt automatically results in the area of the "short” sections and a type of "chicane" in the area of the subsequent, for example right-angled transition to the "long” section, which additionally counteracts further infiltration of the metal melt.
- a gas purging device for example within a gas purging plug, several of the purging channels described above can be arranged concentrically to one another or next to one another in order to increase the gas cross-section effective in terms of purging.
- the invention proposes a solution in which the flushing channel has a star shape when viewed from the top.
- a gas purging device can be described as a "wrinkle flusher" and is explained in more detail in the subsequent description of the figures. Due to the "zigzag" design of the flushing channel (in horizontal section), the cross-section of the flushing channel is considerably enlarged compared to a cylindrical flushing channel in the form of a ring. An approximately the same effect can be achieved with a rinsing channel which has a circular shape in horizontal section, provided that the circular shape has a wavy contour.
- the features should be provided at the end of the gas purging device facing the molten metal.
- the corresponding section can make up, for example, one third, half or two thirds of the total height of the gas purging device.
- the rinsing channel can namely - in a manner known per se - be formed by burning out a corresponding shaped body and this can - with the aforementioned Features - for example as a plastic injection molded part very easily and inexpensively. It is then cast around (embedded) by refractory matrix material or pressed together with the refractory matrix material.
- it can be advantageous to provide the outer surface of the burnout part with openings so that a certain pressure compensation takes place between the refractory matrix material running inside the flushing channel and outside of the flushing channel, and at the same time an unintentional loosening of the molded part during pressing is prevented.
- the gas purging device can be designed as a discrete component, ie as a gas purging plug.
- a gas purging plug will typically have a truncated cone shape in accordance with the prior art. In this case, it makes sense to also make the geometry of the flushing channel (viewed in the axial direction) like a truncated cone (conical).
- the gas purging device in a monolithic floor or wall lining of a metallurgical vessel.
- the previously described burnout body is, for example, overmolded with appropriate refractory material directly on site.
- the width of the irrigation channel should not exceed 1 to 2 mm in order not to endanger the advantages described above with regard to the anti-infiltration properties.
- the flushing channel width can also be significantly smaller, for example down to 0.1 mm. Further features of the invention result from the features of the subclaims and the other application documents.
- This shaped body which here consists of plastic, is shown in longitudinal section in FIG.
- the essentially cylindrical geometry can be seen, with the shaped body
- FIG. 11 in FIG. 1 shows that the shaped body has a star shape when viewed from above.
- FIG. 3 shows an enlarged illustration of the section marked III in FIG. 2, from which it can be seen that the molded body wall runs from an inner section 12i to an outer section 12a and from there, after being bent back, to a further inner section I2i, wherein the training is a mirror image of a plane of symmetry indicated with 14.
- Figure 4 shows the section shown in Figure 1 with IV.
- the molded body wall then runs to the right at an acute angle alpha to the horizontal (towards the (imaginary) central longitudinal axis M of the molded body 10).
- a “short” section 12k is formed, to which a “long” section 121 adjoins after an angle at an obtuse angle beta to the horizontal.
- the molded plastic body shown in FIGS. 1 to 4 is then cast on the inside (16) and outside (18) with refractory ceramic material.
- the ceramic material is then dried and the molded body 10 is burned out by heating the gas purging device formed in this way in order to expose a gas channel (flushing slot) corresponding to the molded body geometry.
- the "closed" shape of the flushing channel contributes significantly to the simplified manufacture of the gas flushing device, because the cylindrical shape described (truncated cone shape) ensures high stability of the shaped body and thus also high dimensional accuracy when assembling the gas flushing device.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Carbon Steel Or Casting Steel Manufacturing (AREA)
- Treatment Of Steel In Its Molten State (AREA)
- Furnace Charging Or Discharging (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU26387/97A AU2638797A (en) | 1996-05-11 | 1997-04-25 | Gas rinsing device |
EP97918157A EP0840657A1 (de) | 1996-05-11 | 1997-04-25 | Gasspüleinrichtung |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE1996119204 DE19619204C1 (de) | 1996-05-11 | 1996-05-11 | Gasspüleinrichtung |
DE19619204.8 | 1996-05-11 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1997043062A1 true WO1997043062A1 (de) | 1997-11-20 |
Family
ID=7794155
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP1997/002135 WO1997043062A1 (de) | 1996-05-11 | 1997-04-25 | Gasspüleinrichtung |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0840657A1 (de) |
AU (1) | AU2638797A (de) |
CA (1) | CA2226361A1 (de) |
DE (1) | DE19619204C1 (de) |
WO (1) | WO1997043062A1 (de) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102005060432A1 (de) * | 2005-12-15 | 2007-06-21 | Pa-Ha-Ge Feuerfeste Erzeugnisse Gmbh & Co. Kg | Spülkegel |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE609558C (de) * | 1935-02-18 | Ver Stahlwerke Akt Ges | Vorrichtung zur Windfuehrung in Konvertern | |
FR1246855A (fr) * | 1959-10-13 | 1960-11-25 | Creusot Forges Ateliers | Perfectionnements aux tubes de soufflage d'air pour fonds de convertisseurs |
JPS6036612A (ja) * | 1983-08-06 | 1985-02-25 | Kawasaki Steel Corp | 精錬用ガス吹込みノズル |
EP0329645A1 (de) * | 1988-02-19 | 1989-08-23 | Veitscher Magnesitwerke-Actien-Gesellschaft | Gasspülstein |
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 |
WO1995033587A1 (de) * | 1994-06-08 | 1995-12-14 | Veitsch-Radex Aktiengesellschaft Für Feuerfeste Erzeugnisse | Gasspüleinrichtung für ein metallurgisches gefäss, insbesondere stahlwerkskonverter |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3802657C1 (de) * | 1988-01-29 | 1989-09-21 | Didier-Werke Ag, 6200 Wiesbaden, De | |
DE3815664C1 (en) * | 1988-05-07 | 1989-06-15 | Burbach & Bender Ohg Esb Schweissbetrieb, 5900 Siegen, De | Gas bubble brick for metallurgical vessels and method for its manufacture |
DE4126237A1 (de) * | 1991-08-08 | 1993-03-04 | Radex Heraklith | Vorgefertigtes einbauelement fuer elektro-lichtbogenoefen und zugehoeriger elektro-lichtbogenofen |
-
1996
- 1996-05-11 DE DE1996119204 patent/DE19619204C1/de not_active Expired - Fee Related
-
1997
- 1997-04-25 CA CA 2226361 patent/CA2226361A1/en not_active Abandoned
- 1997-04-25 EP EP97918157A patent/EP0840657A1/de not_active Withdrawn
- 1997-04-25 WO PCT/EP1997/002135 patent/WO1997043062A1/de not_active Application Discontinuation
- 1997-04-25 AU AU26387/97A patent/AU2638797A/en not_active Abandoned
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE609558C (de) * | 1935-02-18 | Ver Stahlwerke Akt Ges | Vorrichtung zur Windfuehrung in Konvertern | |
FR1246855A (fr) * | 1959-10-13 | 1960-11-25 | Creusot Forges Ateliers | Perfectionnements aux tubes de soufflage d'air pour fonds de convertisseurs |
JPS6036612A (ja) * | 1983-08-06 | 1985-02-25 | Kawasaki Steel Corp | 精錬用ガス吹込みノズル |
EP0329645A1 (de) * | 1988-02-19 | 1989-08-23 | Veitscher Magnesitwerke-Actien-Gesellschaft | Gasspülstein |
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 |
WO1995033587A1 (de) * | 1994-06-08 | 1995-12-14 | Veitsch-Radex Aktiengesellschaft Für Feuerfeste Erzeugnisse | Gasspüleinrichtung für ein metallurgisches gefäss, insbesondere stahlwerkskonverter |
Non-Patent Citations (1)
Title |
---|
PATENT ABSTRACTS OF JAPAN vol. 009, no. 166 (C - 290) 11 July 1985 (1985-07-11) * |
Also Published As
Publication number | Publication date |
---|---|
EP0840657A1 (de) | 1998-05-13 |
AU2638797A (en) | 1997-12-05 |
CA2226361A1 (en) | 1997-11-20 |
DE19619204C1 (de) | 1997-05-22 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP0351414A1 (de) | Tauchausguss für metallurgische gefässe. | |
DE3629886C2 (de) | Verfahren und Vorrichtung zum Bilden einer Feuerfestmasse auf einer Oberfläche | |
WO1985005584A1 (en) | Ceramic casting | |
DE2726745A1 (de) | Absperrventil fuer spritzgussmaschine | |
EP1893371B1 (de) | Verschlussstopfen für ein metallurgisches schmelzgefäss | |
EP1101825B1 (de) | Feuerfester keramischer Gasspülstein | |
AT402735B (de) | Gasspülstein mit gerichteter porosität | |
DE6927561U (de) | Behaelter mit schieberverschluss fuer fluessige schmelze. | |
DE2548854A1 (de) | Feuerfester stein mit einer durchlassoeffnung fuer fluessiges metall und verfahren zu dessen herstellung | |
DE3441223C2 (de) | ||
WO1997043062A1 (de) | Gasspüleinrichtung | |
WO2004014585A1 (de) | Feuerfestes keramisches bauteil | |
DE4324768C1 (de) | Anordnung zur Verbindung einer Stopfenstange für ein metallurgisches Gefäß mit ihrer Hebevorrichtung und für die Anordnung geeignete Stopfenstange sowie Verfahren zur Herstellung der Anordnung | |
DE4313427C1 (de) | Anordnung zur Verbindung einer Stopfenstange für ein metallurgisches Gefäß mit ihrer Hebevorrichtung und für die Anordnung geeignete Stopfenstange sowie Verfahren zur Herstellung der Anordnung | |
WO1996025259A1 (de) | Gasspülstein in form eines fugenspülers | |
DE19604413C1 (de) | Gasspüleinrichtung für metallurgische Gefäße | |
EP0403466B1 (de) | Spüleinrichtung für ein metallurgisches Gefäss | |
DE2738568B2 (de) | Probenahmevorrichtung für Metallschmelzen | |
EP1917114B1 (de) | Feuerfestes element mit einem aus diskretem koerper gebildeten kanal | |
EP0678584B1 (de) | Gasspüleinrichtung zum wandseitigen Einbau in metallurgische Schmelzgefässe | |
WO1995033587A1 (de) | Gasspüleinrichtung für ein metallurgisches gefäss, insbesondere stahlwerkskonverter | |
DE3700099C2 (de) | Gasspülstein für metallurgische Gefäße | |
DE19827814C2 (de) | Tauchausguß für Rundstranggießanlagen | |
WO1998002265A1 (de) | Anordnung von stopfenstange und stopfenstangenkörper | |
DE3109909A1 (de) | "vorrichtung zur herstellung von metallgranalien" |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AK | Designated states |
Kind code of ref document: A1 Designated state(s): AL AM AT AU AZ BA BB BG BR BY CA CH CN CU CZ DK EE ES FI GB GE HU IL IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MD MG MK MN MW MX NO NZ PL PT RO RU SD SE SG SI SK TJ TM TR TT UA UG US UZ VN YU AM AZ BY KG KZ MD RU TJ TM |
|
AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): GH KE LS MW SD SZ UG AT BE CH DE DK ES FI FR GB GR IE IT LU MC NL PT SE BF BJ CF |
|
ENP | Entry into the national phase |
Ref document number: 2226361 Country of ref document: CA Ref country code: CA Ref document number: 2226361 Kind code of ref document: A Format of ref document f/p: F |
|
WWE | Wipo information: entry into national phase |
Ref document number: 1997918157 Country of ref document: EP |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
WWP | Wipo information: published in national office |
Ref document number: 1997918157 Country of ref document: EP |
|
NENP | Non-entry into the national phase |
Ref country code: JP Ref document number: 97540434 Format of ref document f/p: F |
|
WWW | Wipo information: withdrawn in national office |
Ref document number: 1997918157 Country of ref document: EP |