EP0214882B1 - Feuerfeste Auskleidung eines metallurgischen Gefässes und Verfahren zu ihrer Herstellung - Google Patents
Feuerfeste Auskleidung eines metallurgischen Gefässes und Verfahren zu ihrer Herstellung Download PDFInfo
- Publication number
- EP0214882B1 EP0214882B1 EP86401649A EP86401649A EP0214882B1 EP 0214882 B1 EP0214882 B1 EP 0214882B1 EP 86401649 A EP86401649 A EP 86401649A EP 86401649 A EP86401649 A EP 86401649A EP 0214882 B1 EP0214882 B1 EP 0214882B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- layer
- liquid metal
- sinterable
- sintered
- inorganic particles
- 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
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
- B22D41/02—Linings
Definitions
- the present invention relates to a coating for protecting the interior of a metallurgical container intended to contain a liquid metal such as liquid steel.
- the invention also relates to a method for producing such a protective coating.
- the metallurgical container which it is desired to protect by means of a coating in accordance with the invention may be a ladle, a tundish or a slag tank.
- These metallurgical vessels generally comprise an outer steel casing which is coated internally with a lining of refractory material such as bricks made of magnesia, alumina or silico-aluminous or of refractory cement.
- French patent 2,316,027 recommends the protection of all the interior parts of a liquid metal transfer container by the interposition between the permanent refractory lining and the liquid metal of sinterable elements, generally in the form of plates.
- French patent 2,393,637 describes a similar protection, made with or without the use of prefabricated elements, refractory insulators sinterable in contact with liquid steel and made integral with the permanent refractory lining by application of a composition of substantially identical nature. to that of the aforementioned prefabricated elements.
- French Patent 2,451,789 relates to protection of the permanent refractory lining of a metallurgical container, comprising between this refractory lining and the coating coming into contact with liquid steel, a relatively compressible layer based on organic fibers and / or inorganic coated in a binder.
- French patent 2,393,637 already cited above also describes the possibility of projecting or introducing using a mold leaving between itself and the wall to be coated, a uniform space into which the composition is introduced by tamping. and / or by blowing, by suction or by vibration.
- the protective coatings formed by the plates or prefabricated elements are relatively expensive and complicated to implement. In addition, these prefabricated plates or elements generally do not resist beyond five to six successive flows.
- these plates must be preheated to a temperature above 600 ° C to remove moisture and the organic compounds they contain, in order to avoid any pollution of the liquid metal by hydrogen.
- the prefabricated plates or elements try to curve under the effect of heat, creating between the joints of these plates or elements, spaces in which the liquid metal can infiltrate which can thus reach the permanent refractory lining.
- the object of the present invention is to remedy the drawbacks of the aforementioned known solutions by creating a protective coating which is both inexpensive, easy to use, which withstands many successive flows, which withstands temperatures without damage. high preheating, which allows to maintain a high power of thermal insulation during many successive castings and which avoids any risk of adhesion between the coating and the wall of the metallurgical container, thus considerably facilitating the cleaning thereof this at the end of casting.
- the coating for protecting the interior of a metallurgical container intended to contain a liquid metal this coating being based on refractory inorganic particles, coated in a binder, and comprising a layer whose composition and particle size inorganic refractory particles are such that this layer sintered throughout its mass, under the effect of the heat of the liquid metal contained in the metallurgical container and being characterized in that it comprises between the aforementioned layer and the wall of the container, a layer whose composition and particle size of the refractory inorganic particles are such that this layer does not sinter or only sinter partially, so as to remain brittle, even when the first layer is completely sintered.
- the coating according to the invention thus comprises at least two separate layers.
- One of these two layers gradually sintered when it is in contact with the liquid metal. After a long contact time, for example after ten successive flows, this layer is sintered throughout its mass.
- the other layer does not sinter or sinter only partially, so as to remain brittle, even when the first layer is completely sintered.
- this layer does not adhere to this lining. Consequently, any risk of adhesion between the coating and this refractory lining is avoided, even when the first layer is completely sintered, so that cleaning at the end of casting of the interior of the metallurgical container is very easy and the refractory lining of this container is not likely to be damaged, neither during pouring, nor during cleaning.
- the duration of use of a two-layer coating is surprisingly significantly greater than that of a coating formed of a single layer, sinterable throughout its mass, of the same thickness as that of the two layers of the coating according to the invention.
- Sintering is the physico-chemical phenomenon which makes it possible to create a bond between two inorganic particles. This sintering takes place at a temperature significantly lower than the melting temperature of these particles. This sintering is favored by the high pressure exerted by the liquid metal on the coating according to the invention, by the possible presence, within this coating of very fine particles, of fluxes (inorganic particles having a melting point lower than that other particles that are refractory) and by using the lowest possible binder content, so that the inorganic particles are arranged very close to each other.
- the method for producing the coating according to the invention consists in successively applying the different layers from a mud comprising the solid ingredients of the layer which it is desired to form, mixed with a liquid, for example ethylene glycol alcohol and / or water in a proportion of 3 to 30% by weight of liquid, the density of these sludges varying according to the layer, between 0.8 and 3.5 kg / dm3, after which the different layers are dried.
- This drying is carried out at a temperature between 100 and 200 ° C to remove the free water.
- the different layers are preheated to a temperature between 600 and 1450 ° C. to remove the water of constitution and / or of crystallization to avoid any pollution of the liquid metal by hydrogen.
- the mud is applied, preferably by spraying and / or spraying, but can also be carried out by other mechanical means such as: molding, injection, vibration, by gravity, trowelling or any other means of application. .
- the method according to the invention is both very economical and is perfectly suited to the application of successive layers having different compositions.
- the single appended figure shows, by way of nonlimiting example, in cross section, a coating according to the invention, with three superimposed layers, applied inside a tundish.
- the flow distributor intended to contain liquid steel comprises an outer casing made of steel 1 comprising on its internal faces a permanent refractory lining composed of refractory bricks 2.
- a protective coating is applied in the form of mud, which, in the example shown, comprises three layers 3, 4, 5.
- the outer layer 3 intended to come into contact with the liquid metal which is poured into the tundish consists of a mixture of refractory inorganic particles, linked together by means of an organic and / or inorganic binder.
- the composition of these inorganic particles and their particle size are such that these particles can sinter, that is to say bind to each other to create a coherent mass, in contact with the liquid metal.
- this sintering is carried out very gradually and reaches the entire thickness of the layer 3, that is to say the entire mass of this layer, after a certain contact time which generally corresponds to several hours and several successive flows.
- the thickness of this layer 3 is generally between 1 and 10 cm.
- the intermediate layer 4 is also constituted by a mixture of inorganic particles linked together by means of an organic and / or inorganic binder.
- the composition and particle size of these particles are such that these particles only partially sinter, so that this layer 4 remains brittle (or meringuable according to the expression used in steelmakers), even when the outer layer 3 is completely sintered in its mass.
- the thickness of this layer 4 is generally of the same order of magnitude as that of layer 3.
- Layer 5 is in direct contact with the lining of refractory bricks 2.
- This layer 5 also consists of a mixture of inorganic refractory particles, linked together by an organic and / or inorganic binder.
- the layer 5 is not sinterable, so that after destruction under the effect of heat, of the organic and / or inorganic binder which ensures the initial cohesion of this layer , this layer 5 becomes powdery and no longer has any adhesion with the lining of refractory bricks 2.
- the more or less sinterable nature of the layers 3 and 4 depends on the nature and the composition of the refractory inorganic particles, on the particle size thereof, on the possible presence of fluxes such as iron oxide or carbonate of alkali or alkaline earth metals and binder content.
- a composition containing a large proportion of refractory inorganic particles will preferably be used.
- the proportion by weight of these will preferably be between 90 and 99.7%.
- the particle size of these particles is preferably between 0 and 4 mm, which implies that some of them are very fine, this fineness promoting sintering.
- the intermediate layer 4 contains a proportion of refractory inorganic particles lower than that of the completely sinterable layer 3. This proportion is preferably between 75 and 95% by weight.
- the particle size of these particles is advantageously between 0 and 3 mm, preferably between 0.25 and 2.5 mm, so that very fine particles of particle size less than 0.5 mm are absent from this composition, so as to limit sintering.
- this layer 4 can only partially sinter while remaining brittle, that is to say brittle, even when the layer 3 is completely sintered in its mass.
- this intermediate layer 4 only partially sintered, this intermediate layer retains its thermal insulation properties, so that it makes it possible to avoid cooling of the liquid metal, even when the outer layer 3 is completely sintered and thus has lost its initial thermal insulation properties.
- the layer 5 adjacent to the refractory permanent lining 2 preferably contains between 65 and 96% by weight of refractory inorganic particles whose particle size is preferably between 0 and 5 mm.
- This layer 5 due to its lower content of refractory inorganic particles, and the fact that it is separated from the sinterable layer 3, by an intermediate layer 4, thermally insulating, does not sinter under the effect of heat, so that after destruction of the binder initially ensuring the cohesion of the layer, the latter loses all its cohesion and becomes pulverulent.
- the coating according to the invention not only effectively protects the gar permanent refractory lining 2 but it makes it very easy to clean the interior of the distributor at the end of casting.
- these layers are successively applied to the walls of the tundish, in the form of sludge containing the solid ingredients of these layers, mixed with a liquid for example such as water and / or oils, in an amount of 3 to 30% by weight of liquid.
- a liquid for example such as water and / or oils
- An alcohol could also be suitable (for example: ethylene glycol).
- the mud applied must be sufficiently pasty, so as to adhere to the walls of the tundish, or to the other layers, without sinking.
- the density of the mud applied varies according to the layers 5, 4, 3, between 0.8 kg / dm3 and 3.5 kg / dm3, the outer layer 3 being denser than the intermediate layer 4 and the latter being itself even denser than the layer 5 adjacent to the refractory lining 2.
- the layers 3, 4, 5 thus applied are then dried at a temperature of between 100 and 200 ° C., for example by buckling and / or by blowing hot air or by means of electric heating resistors, placed inside. of the tundish and attached to a cover closing the latter. This drying eliminates the free water from the mud which constitutes the different layers.
- the layers 3, 4, 5 are preheated to a temperature equal to at least 600 ° C., this temperature possibly reaching 1450 ° C.
- the inorganic and / or organic binders which decompose the initial cohesion of the layers 3, 4, 5 are decomposed.
- This heating at high temperature has the effect of partially sintering the outer layer 3.
- This partial sintering makes it possible to restore the cohesion of the entire coating.
- This cohesion makes it possible to prevent, when the liquid metal is poured into the tundish, that the inorganic particles detach from the coating to pollute the liquid metal.
- the layer 5 adjacent to the permanent refractory lining 2 does not sinter and becomes powdery, this layer 5 has no adhesion with respect to this lining, so that at the end of casting, the removal of the coating is very easy and there is no risk of damaging the refractory lining by trying to remove by means of tools such as jackhammers, the solidified masses adhering to this permanent refractory lining.
- one of the layers 4 or 5 can be omitted, so as to limit the number of layers to at least 2.
- the layers 3 and 4 can be inverted, that is to say by placing the sinterable layer 3 between the non-sinterable layer 5 and the partially sinterable layer 4.
- the method according to the invention makes it possible to apply, at the level of the slag area 6 supernatant the liquid metal, an additional thickness 7 of the sinterable layer 3.
- This additional thickness 7 may have the same composition as the layer 3 so as to sinter at the same time as this.
- This additional thickness 7 makes it possible to reinforce the protection provided by the coating according to the invention, in the most vulnerable zone of the flow distributor, namely the zone of slag.
- This additional thickness 7 may also have a composition different from that of the layer 3 so as to provide increased protection against slag.
- the composition of the layer forming this additional thickness 7 can thus contain highly refractory particles such as zircon and / or zirconia and / or carbon, and / or silicon carbide.
- the thickness of the coating can, of course, also be increased in other places in the tundish and in part in the impact zone of the casting jet which is poured from the tundish placed above the tundish. casting.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Furnace Housings, Linings, Walls, And Ceilings (AREA)
- Making Paper Articles (AREA)
Claims (12)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT86401649T ATE40804T1 (de) | 1985-07-24 | 1986-07-23 | Feuerfeste auskleidung eines metallurgischen gefaesses und verfahren zu ihrer herstellung. |
MYPI87002284A MY101458A (en) | 1985-07-24 | 1987-09-29 | A lining for protecting the interior of a metallurgical vessel and a method for forming said lining |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8511327 | 1985-07-24 | ||
FR8511327A FR2585273B1 (fr) | 1985-07-24 | 1985-07-24 | Revetement pour proteger l'interieur d'un recipient metallurgique et procede pour realiser ce revetement |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0214882A1 EP0214882A1 (de) | 1987-03-18 |
EP0214882B1 true EP0214882B1 (de) | 1989-02-15 |
EP0214882B2 EP0214882B2 (de) | 1997-09-24 |
Family
ID=9321609
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP86401649A Expired - Lifetime EP0214882B2 (de) | 1985-07-24 | 1986-07-23 | Feuerfeste Auskleidung eines metallurgischen Gefässes und Verfahren zu ihrer Herstellung |
Country Status (10)
Country | Link |
---|---|
US (1) | US4799652A (de) |
EP (1) | EP0214882B2 (de) |
AT (1) | ATE40804T1 (de) |
AU (1) | AU586519B2 (de) |
CA (1) | CA1266776A (de) |
DE (1) | DE3662086D1 (de) |
ES (1) | ES2001336A6 (de) |
FR (1) | FR2585273B1 (de) |
MY (1) | MY101458A (de) |
ZA (1) | ZA865500B (de) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1990012666A1 (fr) * | 1989-04-26 | 1990-11-01 | Daussan Et Compagnie | Procede et installation pour realiser un revetement sur les parois interieures d'un recipient metallurgique |
FR2657549A1 (fr) * | 1990-01-26 | 1991-08-02 | Daussan & Co | Procede pour appliquer sur les faces interieures d'un recipient metallurgique un revetement de protection comportant au moins deux couches et revetement de protection ainsi obtenu. |
WO1992000157A1 (fr) * | 1990-06-27 | 1992-01-09 | Daussan Et Compagnie | Procede pour appliquer sur les faces interieures d'un recipient metallurgique un revetement de protection comportant au moins deux couches, et revetement de protection ainsi obtenu |
DE4240287C1 (de) * | 1992-12-01 | 1994-02-17 | Veitsch Radex Ag | Vorrichtung und Verfahren zum Aufbringen einer feuerfesten Isoliermasse auf die Wand eines metallurgischen Gefäßes |
FR2732915A1 (fr) * | 1995-04-14 | 1996-10-18 | Daussan & Co | Procede pour appliquer a l'interieur d'un recipient metallurgique un revetement de protection comportant au moins deux couches |
Families Citing this family (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2606785A1 (fr) * | 1986-11-13 | 1988-05-20 | Daussan & Co | Joint pateux pour realiser l'etancheite entre des surfaces soumises a la chaleur et devant etre jointoyees, procede de preparation et d'application de ce joint |
FR2625924B1 (fr) * | 1988-01-20 | 1990-05-11 | Daussan & Co | Dispositif pour projeter un revetement sur la surface interieure d'un recipient de transvasement de metal liquide et procede s'y rapportant |
EP0399786A3 (de) * | 1989-05-25 | 1992-05-27 | Alcan International Limited | Feuerfeste Auskleidungen, beständig gegen Natrium und Natriumsalze |
DE4319393C1 (de) * | 1993-06-11 | 1994-06-01 | Chemikalien Ges Hans Lungmus M | Verfahren zum Herstellen von feuerfesten Tiegeln für Stahlbehandlungspfannen |
US5507474A (en) * | 1994-01-13 | 1996-04-16 | Minerals Technologies, Inc. | Lining for molten metal handling vessles |
FR2717720A1 (fr) * | 1994-03-23 | 1995-09-29 | Daussan & Co | Revêtement pour protéger l'intérieur d'un récipient métallurgique, dispositif et procédé d'application de ce revêtement. |
US5885510A (en) * | 1997-02-07 | 1999-03-23 | Alcoa Chemie Gmbh | Methods of making refractory bodies |
US6165926A (en) * | 1998-06-24 | 2000-12-26 | Alcoa Chemie Gmbh | Castable refractory composition and methods of making refractory bodies |
DE10052352B4 (de) * | 2000-10-21 | 2005-04-14 | Refractory Intellectual Property Gmbh & Co. Kg | Verwendung eines Reduktionsmittels in MgO-Sinter-Massen |
US8167995B2 (en) * | 2008-06-12 | 2012-05-01 | Latitude 18, Inc. | Inorganic phosphate resins and method for their manufacture |
CA2783723C (en) | 2009-12-11 | 2019-01-15 | Arun Wagh | Inorganic phosphate compositions and methods |
JP5669859B2 (ja) * | 2009-12-11 | 2015-02-18 | ラティテュード・18,インコーポレイテッド | 無機リン酸塩耐食コーティング |
US20130139930A1 (en) | 2009-12-18 | 2013-06-06 | Latitude 18, Inc. | Inorganic phosphate corrosion resistant coatings |
US8967147B2 (en) * | 2009-12-30 | 2015-03-03 | 3M Innovative Properties Company | Filtering face-piece respirator having an auxetic mesh in the mask body |
KR20120125518A (ko) | 2010-02-09 | 2012-11-15 | 래티두드 18, 아이엔씨. | 포스페이트 결합된 복합체 및 그의 제조 방법 |
CN102062540B (zh) * | 2010-06-18 | 2013-07-03 | 四川龙蟒矿冶有限责任公司 | 一种复合结构的电炉炉衬 |
WO2015043452A1 (zh) * | 2013-09-29 | 2015-04-02 | 武汉钢铁(集团)公司 | 提高冶炼钢包使用效率的方法及其高寿命低材耗冶炼钢包 |
EA201992113A1 (ru) * | 2017-04-17 | 2020-02-19 | ВЕЗУВИУС ЮЭсЭй КОРПОРЕЙШН | Пористый огнеупорный литой материал, его применение и получение |
CN111960812A (zh) * | 2020-08-30 | 2020-11-20 | 洛阳欧斯特节能科技有限公司 | 一种高温不定型纳米耐火保温材料及其制备方法 |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1381171A (en) * | 1918-01-03 | 1921-06-14 | William A Darrah | Crucible and method of manufacture |
US3345059A (en) * | 1965-03-12 | 1967-10-03 | United States Steel Corp | Crucible for holding molten metal |
DE1917505B2 (de) * | 1969-04-05 | 1973-03-22 | Vereinigte Deutsche Metallwerke Ag, 6000 Frankfurt | Verfahren zur herstellung eines zweischichtentiegels fuer induktionsoefen |
GB1469513A (en) * | 1973-07-30 | 1977-04-06 | Foseco Trading Ag | Tundishes |
GB1544637A (en) * | 1975-11-10 | 1979-04-25 | Foseco Trading Ag | Lining of molten metal containers |
JPS53106636A (en) * | 1977-03-02 | 1978-09-16 | Nippon Kokan Kk | Casting vessel having basic lining and use thereof |
FR2393637A1 (fr) * | 1977-06-07 | 1979-01-05 | Daussan & Co | Composition pour revetement de repartiteur de coulee, procede pour revetir ce dernier et revetement obtenu |
FR2451789A1 (fr) * | 1979-03-22 | 1980-10-17 | Daussan & Co | Revetement thermiquement isolant pour recipients metallurgiques et procede s'y rapportant |
US4480820A (en) * | 1981-03-31 | 1984-11-06 | Institut Problem Litia Akademii Nauk Ukrainskoi Ssr | Method of lining metallurgical assembly |
JPS57184884A (en) * | 1981-05-08 | 1982-11-13 | Fuaizaa Kuiguree Kk | Protective layer for metallurgical vessel |
FR2516415A1 (fr) * | 1981-11-13 | 1983-05-20 | Daussan & Co | Dispositif pour eliminer les inclusions contenues dans les metaux liquides |
US4422625A (en) * | 1982-02-23 | 1983-12-27 | Fmc Corporation | Foundry pouring ladle protective liner |
CH686374A5 (de) * | 1993-10-13 | 1996-03-15 | Alusuisse Lonza Services Ag | Emaillierbare Oxidschicht. |
-
1985
- 1985-07-24 FR FR8511327A patent/FR2585273B1/fr not_active Expired
-
1986
- 1986-07-22 CA CA000514349A patent/CA1266776A/en not_active Expired - Lifetime
- 1986-07-23 AT AT86401649T patent/ATE40804T1/de not_active IP Right Cessation
- 1986-07-23 ES ES8600521A patent/ES2001336A6/es not_active Expired
- 1986-07-23 DE DE8686401649T patent/DE3662086D1/de not_active Expired
- 1986-07-23 ZA ZA865500A patent/ZA865500B/xx unknown
- 1986-07-23 US US06/888,484 patent/US4799652A/en not_active Expired - Lifetime
- 1986-07-23 EP EP86401649A patent/EP0214882B2/de not_active Expired - Lifetime
- 1986-11-25 AU AU65652/86A patent/AU586519B2/en not_active Ceased
-
1987
- 1987-09-29 MY MYPI87002284A patent/MY101458A/en unknown
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1990012666A1 (fr) * | 1989-04-26 | 1990-11-01 | Daussan Et Compagnie | Procede et installation pour realiser un revetement sur les parois interieures d'un recipient metallurgique |
FR2646367A1 (fr) * | 1989-04-26 | 1990-11-02 | Daussan & Co | Procede et installation pour realiser un revetement sur les parois interieures d'un recipient metallurgique |
US5160692A (en) * | 1989-04-26 | 1992-11-03 | Daussan Et Compagnie | Process and plant for producing a lining on the inner walls of a metallurgical vessel |
FR2657549A1 (fr) * | 1990-01-26 | 1991-08-02 | Daussan & Co | Procede pour appliquer sur les faces interieures d'un recipient metallurgique un revetement de protection comportant au moins deux couches et revetement de protection ainsi obtenu. |
WO1992000157A1 (fr) * | 1990-06-27 | 1992-01-09 | Daussan Et Compagnie | Procede pour appliquer sur les faces interieures d'un recipient metallurgique un revetement de protection comportant au moins deux couches, et revetement de protection ainsi obtenu |
DE4240287C1 (de) * | 1992-12-01 | 1994-02-17 | Veitsch Radex Ag | Vorrichtung und Verfahren zum Aufbringen einer feuerfesten Isoliermasse auf die Wand eines metallurgischen Gefäßes |
FR2732915A1 (fr) * | 1995-04-14 | 1996-10-18 | Daussan & Co | Procede pour appliquer a l'interieur d'un recipient metallurgique un revetement de protection comportant au moins deux couches |
Also Published As
Publication number | Publication date |
---|---|
AU586519B2 (en) | 1989-07-13 |
ZA865500B (en) | 1987-03-25 |
FR2585273A1 (fr) | 1987-01-30 |
MY101458A (en) | 1991-11-18 |
CA1266776A (en) | 1990-03-20 |
FR2585273B1 (fr) | 1988-05-13 |
DE3662086D1 (en) | 1989-03-23 |
US4799652A (en) | 1989-01-24 |
ATE40804T1 (de) | 1989-03-15 |
AU6565286A (en) | 1988-05-26 |
EP0214882B2 (de) | 1997-09-24 |
ES2001336A6 (es) | 1988-05-16 |
EP0214882A1 (de) | 1987-03-18 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP0214882B1 (de) | Feuerfeste Auskleidung eines metallurgischen Gefässes und Verfahren zu ihrer Herstellung | |
EP0846506B1 (de) | Schützüberzug für Elementen einer Stranggiesskokille aus feuerfestem Material und vorgenannten Elementen | |
EP0086923B1 (de) | Form, Verfahren und Zusammensetzung für das Abformen durch Einblasen einer feuerfesten verzehrbaren Auskleidung in ein Giessgefäss, bestimmt zur Aufnahme von schmelzflüssigem Metall | |
US3917110A (en) | Stopper rod having fibrous protective sleeve | |
EP2516350B1 (de) | Pulvermasse für trockenstampfen | |
BE820783A (fr) | Procede pour appliquer un garnissage refractaire dans des recipients metallurgiques | |
FR2572724A1 (fr) | Piece d'usure refractaire pour couler des masses fondues liquides | |
EP0422192B1 (de) | Verfahren und zusammensetzung zum auskleiden eines metallurgischen gefässes mittels einer reinigenden auskleidung und auf diese weise hergestellte auskleidung | |
EP2013381B1 (de) | Elektrolysebehälter zum erhalt von aluminium | |
FR2486427A1 (fr) | Panier de coulee continue d'acier et plaque de revetement d'un tel panier | |
FR2724128A1 (fr) | Dispositif pour faciliter l'extraction d'une busette de l'orifice de coulee d'un recipient de coulee de metal liquide | |
WO1992000157A1 (fr) | Procede pour appliquer sur les faces interieures d'un recipient metallurgique un revetement de protection comportant au moins deux couches, et revetement de protection ainsi obtenu | |
FR2537024A1 (fr) | Plaques thermo-isolantes refractaires et procede pour la coulee continue d'acier | |
CA1261147A (en) | Containers for molten metal | |
FR2606785A1 (fr) | Joint pateux pour realiser l'etancheite entre des surfaces soumises a la chaleur et devant etre jointoyees, procede de preparation et d'application de ce joint | |
FR2683220A1 (fr) | Procede de revetement d'un repartiteur de coulee continue par un materiau refractaire, repartiteur et materiau refractaire resultant de la mise en óoeuvre de ce procede. | |
KR900009216B1 (ko) | 야금용 용기 내부 보호 라이닝 및 그 성형방법 | |
JP2839873B2 (ja) | 電気炉タッピングチューブ | |
BE835396Q (fr) | Perfectionnements apportes aux repartiteurs garnis de refractaire | |
FR3094249A1 (fr) | Tampon de quenouille | |
FR2481691A1 (fr) | Procede de recuit d'un produit refractaire coule, fondu par la chaleur | |
JPS607696B2 (ja) | 溶鋼用耐火物 | |
EP0034379A1 (de) | Verfahren zum Abdecken des Metalls in metallurgischen Gefässen und Masse zur Durchführung dieses Verfahrens | |
LU84609A1 (fr) | Procede pour deposer un revetement protecteur sur la paroi interieure d'un panier repartiteur de coulee continue | |
BE891980A (fr) | Procede pour deposer un revetement protecteur sur la paroi interieure d'un panier repartiteur de coulee continue |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 19860726 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE CH DE FR GB IT LI LU NL SE |
|
17Q | First examination report despatched |
Effective date: 19880210 |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): AT BE CH DE FR GB IT LI LU NL SE |
|
REF | Corresponds to: |
Ref document number: 40804 Country of ref document: AT Date of ref document: 19890315 Kind code of ref document: T |
|
ITF | It: translation for a ep patent filed |
Owner name: BARZANO' E ZANARDO ROMA S.P.A. |
|
GBT | Gb: translation of ep patent filed (gb section 77(6)(a)/1977) | ||
REF | Corresponds to: |
Ref document number: 3662086 Country of ref document: DE Date of ref document: 19890323 |
|
PLBI | Opposition filed |
Free format text: ORIGINAL CODE: 0009260 |
|
26 | Opposition filed |
Opponent name: VEITSCHER MAGNESITWERKE-ACTIEN-GESELLSCHAFT Effective date: 19891114 Opponent name: HOEGANAES AB Effective date: 19891111 |
|
NLR1 | Nl: opposition has been filed with the epo |
Opponent name: VEITSCHER MAGNESITWERKE-ACTIEN-GESELLSCHAFT Opponent name: HOEGANAES AB |
|
ITTA | It: last paid annual fee | ||
PLAB | Opposition data, opponent's data or that of the opponent's representative modified |
Free format text: ORIGINAL CODE: 0009299OPPO |
|
PLAB | Opposition data, opponent's data or that of the opponent's representative modified |
Free format text: ORIGINAL CODE: 0009299OPPO |
|
R26 | Opposition filed (corrected) |
Opponent name: HOEGANAES AB * 891114 VEITSCHER MAGNESITWERKE-ACTI Effective date: 19891111 |
|
R26 | Opposition filed (corrected) |
Opponent name: HOEGANAES AB * 891114 VEITSCHER MAGNESITWERKE-ACTI Effective date: 19891111 |
|
PLAB | Opposition data, opponent's data or that of the opponent's representative modified |
Free format text: ORIGINAL CODE: 0009299OPPO |
|
R26 | Opposition filed (corrected) |
Opponent name: HOEGANAES AB * 891114 VEITSCH-RADEX AKTIENGESELLSC Effective date: 19891111 |
|
EPTA | Lu: last paid annual fee | ||
NLXE | Nl: other communications concerning ep-patents (part 3 heading xe) |
Free format text: PAT.BUL.24/90 CORR.:VEITSCH-RADEX AKTIENGESELLSCHAFT FUER FEUERFESTE ERZEUGNISSE |
|
EAL | Se: european patent in force in sweden |
Ref document number: 86401649.8 |
|
APAC | Appeal dossier modified |
Free format text: ORIGINAL CODE: EPIDOS NOAPO |
|
APAC | Appeal dossier modified |
Free format text: ORIGINAL CODE: EPIDOS NOAPO |
|
APAC | Appeal dossier modified |
Free format text: ORIGINAL CODE: EPIDOS NOAPO |
|
PLAW | Interlocutory decision in opposition |
Free format text: ORIGINAL CODE: EPIDOS IDOP |
|
PUAH | Patent maintained in amended form |
Free format text: ORIGINAL CODE: 0009272 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: PATENT MAINTAINED AS AMENDED |
|
27A | Patent maintained in amended form |
Effective date: 19970924 |
|
AK | Designated contracting states |
Kind code of ref document: B2 Designated state(s): AT BE CH DE FR GB IT LI LU NL SE |
|
ITF | It: translation for a ep patent filed |
Owner name: BARZANO' E ZANARDO ROMA S.P.A. |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: NV Representative=s name: IPTO S.A. |
|
GBTA | Gb: translation of amended ep patent filed (gb section 77(6)(b)/1977) | ||
REG | Reference to a national code |
Ref country code: CH Ref legal event code: AEN Free format text: MAINTIEN DU BREVET DONT L'ETENDUE A ETE MODIFIEE |
|
NLR2 | Nl: decision of opposition | ||
NLR3 | Nl: receipt of modified translations in the netherlands language after an opposition procedure | ||
REG | Reference to a national code |
Ref country code: GB Ref legal event code: 711B |
|
REG | Reference to a national code |
Ref country code: GB Ref legal event code: 711H |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: CL |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: CH Payment date: 20010704 Year of fee payment: 16 |
|
REG | Reference to a national code |
Ref country code: GB Ref legal event code: IF02 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LI Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20020731 Ref country code: CH Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20020731 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GB Payment date: 20030113 Year of fee payment: 17 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: SE Payment date: 20030130 Year of fee payment: 17 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: NL Payment date: 20030131 Year of fee payment: 17 Ref country code: LU Payment date: 20030131 Year of fee payment: 17 Ref country code: DE Payment date: 20030131 Year of fee payment: 17 |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: PL |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LU Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20030723 Ref country code: GB Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20030723 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20030724 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: NL Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20040201 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20040203 |
|
EUG | Se: european patent has lapsed | ||
GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 20030723 |
|
NLV4 | Nl: lapsed or anulled due to non-payment of the annual fee |
Effective date: 20040201 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: AT Payment date: 20050713 Year of fee payment: 20 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: BE Payment date: 20050727 Year of fee payment: 20 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: IT Payment date: 20050728 Year of fee payment: 20 Ref country code: FR Payment date: 20050728 Year of fee payment: 20 |
|
APAH | Appeal reference modified |
Free format text: ORIGINAL CODE: EPIDOSCREFNO |
|
BE20 | Be: patent expired |
Owner name: *DAUSSAN ET CIE Effective date: 20060723 |