EP0043787A1 - Elément réfractaire perméable aux gaz - Google Patents
Elément réfractaire perméable aux gaz Download PDFInfo
- Publication number
- EP0043787A1 EP0043787A1 EP81630045A EP81630045A EP0043787A1 EP 0043787 A1 EP0043787 A1 EP 0043787A1 EP 81630045 A EP81630045 A EP 81630045A EP 81630045 A EP81630045 A EP 81630045A EP 0043787 A1 EP0043787 A1 EP 0043787A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- gas
- metal
- metal housing
- refractory
- stone
- 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
Links
Images
Classifications
-
- 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
- C21C5/30—Regulating or controlling the blowing
- C21C5/34—Blowing through the bath
-
- 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 refractory, gas-permeable structures for blowing a gas into a metal treatment vessel through its lining.
- the oxygen-blowing process used for pig iron freshening which are known under the names "LD”, “LDAC”, “OLP”, “BOF” processes, have recently been improved in metallurgical terms to the effect that secondary gases such as Nitrogen or argon, can be injected in a controlled manner.
- secondary gases such as Nitrogen or argon
- the blowing of gas into the metal bath through the vessel bottom or the lining of the vessel walls can also be considered.
- patent application LU 81.208 the applicant has shown a device for blowing a treatment gas into a metal bath which is intended for insertion into the bottom of a metal treatment vessel and which has a noticeably improved durability compared to the gas-permeable stones known hitherto and allows the desired amounts of gas to be blown in.
- This apparatus consists essentially in a .85festen gas permeable stone, wherein in the refractory material in the axial direction a plurality of planar, ge - undulated, tubular or wire-shaped metallic members is embedded separation of small wall thickness.
- this sink consists of sheet steel and segments or strips of refractory material in an alternating arrangement. The passage of gas takes place through the gaps formed within the stone along the metallic separators.
- the applicant has shown designs and variants of such gas-permeable stones.
- the sink or the segments forming it are surrounded by a metal housing that is sealed, optionally with an intermediate circuitry of a layer of mortar that bears against the longitudinal surfaces of the stone. The result of this is that the gas only emerges on the fire side of the stone, and furthermore the undesired, because uncontrollable, gas passage along the metal housing is to be prevented.
- sink stones or the segments forming them are usually produced by pressing refractory material; which may be followed by a stone fire.
- the sink blocks and therefore also the metal housings surrounding them have a rectangular or square cross section.
- the metal housing may expand at higher gas pressures, as a result of which the metal housing is lifted off the flushing stone and an undesirable joint is created between the stone and the metal housing.
- the metal melt pig iron or steel
- the metal melt can penetrate into this joint and there is a risk that the melt will break through to the cold side of the stone.
- a refractory, gas-permeable structure in that it consists of a gas-permeable refractory stone which is tightly enclosed by a first metal housing, optionally with the interposition of a mortar layer, in that the first metal housing is arranged at a distance from it is surrounded by the second metal housing, that a refractory, essentially gas-impermeable filling compound is arranged between the two metal housings and that at least one connection and a distribution space for the gas supply are arranged on an end face of the stone.
- the second, outer metal housing expediently has a cylindrical or frustoconical shape with a circular cross section, which eliminates the risk that it in turn could be deformed. Furthermore, it is now also possible to use it in such applications where flushing blocks with a circular cross section are required, e.g. in pans. Since the first, inner metal housing is now protected from deformations by the gas pressure, it does not bother if it has a rectangular or square cross section, as is desired in the interest of the rational production of the sink.
- the first, inner metal housing in particular the one adjacent to the gas supply, e.g. cold-side areas, sheet metal plates arranged, e.g. be welded on, which protrude into the refractory filling compound for anchoring.
- sheet metal plates can also be attached to the second, outer metal housing, which protrude outwards and, when the structure is installed, claw between the gas-permeable structure and the floor stones, for example in a furnace floor in the ramming mass surrounding the structure.
- the gas-permeable refractory sink located within the first metal housing can be constructed from individual segments lying on one another on longitudinal surfaces, optionally with the interposition of metal supports or inserts.
- the sink or the segments can be provided with embedded, preferably also pressed-in pairs of sheets, the passage of gas taking place through the gap between the sheets of a pair.
- the adjacent longitudinal surfaces of the segments can be provided with profiles, such as grooves or shafts, in order to ensure gas permeability to increase the stones.
- the sink or the segments forming it consist of burned or unfired, e.g. with a carbon carrier, such as tar, pitch, synthetic resin, bound or chemically bound refractory material, such as sintered magnesia, mixtures of magnesia and chrome ore, pre-reacted magnesia-chrome ore sintered grain, high alumina material.
- a carbon carrier such as tar, pitch, synthetic resin, bound or chemically bound refractory material, such as sintered magnesia, mixtures of magnesia and chrome ore, pre-reacted magnesia-chrome ore sintered grain, high alumina material.
- refractories are also suitable for the filling compound, which is provided with a chemical or a carbon-containing binder, is introduced as a tamping or casting compound between the two metal housings.
- Sheet metal e.g. in a thickness between 1 and 3 mm.
- the structure 1 consists of the actual sink 2, which is enclosed by a first, inner metal housing 3 with a rectangular cross section.
- a second outer metal housing 4 with a circular cross section is arranged at a distance from it and the space between the two metal housings 3 and 4 is filled with a refractory filling compound 5 .
- the sink 2 located within the first metal housing 3 consists in the illustrated embodiment of twelve prefabricated segments 7 made of refractory material, which are arranged in two rows of six pieces. Sheet metal plates 8 are inserted into the joints between the segments 7, along which the gas passage takes place.
- the segments 7 are by means of two strips 9, which are arranged on the inside of the first metal housing 3 and on this are preferably attached by spot welding, spaced from the end face of the first metal housing 3. 'At this end face, which forms the cold side of the structure 1 together with the relevant, lying in a plane surface of the filling material 5, -is tightly welded a plate tenth
- This plate 10 shown partially broken away in the drawing, is provided with a pipe connection 11, via which the gas can be introduced into the distribution space which remains free between the plate 10 and the end face of the sink 2.
- a mass of sintered magnesia with the following composition and the following grain structure can serve as the filling mass 5:
- This mass which is provided, for example, with a chromate binder, can be introduced into the space between the two metal housings 3 and 4 with an addition of 4.5% by weight of water, based on the dry mass, and pounded there.
- the mass in the space between the two metal housings 3 and 4 can be compressed by means of an internal vibrator introduced into the mass. If the amount of water added is even higher, use as a casting compound would also be possible.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Building Environments (AREA)
- Treatment Of Steel In Its Molten State (AREA)
- Furnace Housings, Linings, Walls, And Ceilings (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
- Insulated Conductors (AREA)
- Buildings Adapted To Withstand Abnormal External Influences (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Compositions Of Oxide Ceramics (AREA)
- Laminated Bodies (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT81630045T ATE7310T1 (de) | 1980-07-09 | 1981-06-15 | Feuerfeste, gasdurchlaessige baukoerper. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
LU82597 | 1980-07-09 | ||
LU82597A LU82597A1 (de) | 1980-07-09 | 1980-07-09 | Feuerfester,gasdurchlaessiger baukoerper |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0043787A1 true EP0043787A1 (fr) | 1982-01-13 |
EP0043787B1 EP0043787B1 (fr) | 1984-05-02 |
Family
ID=19729433
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP81630045A Expired EP0043787B1 (fr) | 1980-07-09 | 1981-06-15 | Elément réfractaire perméable aux gaz |
Country Status (12)
Country | Link |
---|---|
US (1) | US4378106A (fr) |
EP (1) | EP0043787B1 (fr) |
JP (1) | JPS5747840A (fr) |
AT (1) | ATE7310T1 (fr) |
AU (1) | AU539753B2 (fr) |
BR (1) | BR8104287A (fr) |
CA (1) | CA1176460A (fr) |
DE (1) | DE3163373D1 (fr) |
ES (1) | ES259133Y (fr) |
LU (1) | LU82597A1 (fr) |
PT (1) | PT73305B (fr) |
ZA (1) | ZA814143B (fr) |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0061987A1 (fr) * | 1981-03-23 | 1982-10-06 | Arbed S.A. | Procédé et dispositif pour le traitement de métaux fondus dans le cadre de la métallurgie |
EP0063532A1 (fr) * | 1981-04-22 | 1982-10-27 | Arbed S.A. | Procédé et dispositif pour la production directe de la fonte liquide |
EP0064019A1 (fr) * | 1981-04-24 | 1982-11-03 | Arbed S.A. | Procédé et installation de désulfuration de fer fondu |
FR2516938A1 (fr) * | 1981-11-23 | 1983-05-27 | Usinor | Dispositif pour l'introduction de gaz dans le bain de metal liquide |
EP0097610A1 (fr) * | 1982-06-18 | 1984-01-04 | Arbed S.A. | Procédé et dispositif pour vidanger des récipients métallurgiques |
EP0146079A2 (fr) * | 1983-12-12 | 1985-06-26 | Arbed S.A. | Pièce réfractaire perméable aux gaz |
US4744546A (en) * | 1986-02-03 | 1988-05-17 | Voest-Alpine Aktiengesellschaft | Flushing arrangement for a metallurgical vessel |
DE3716388C1 (de) * | 1987-05-15 | 1988-10-27 | Radex Deutschland Ag | Gasspuelstein |
EP0311785A1 (fr) * | 1987-10-14 | 1989-04-19 | PA-HA-GE HÜTTEN UND GIESSEREIBEDARF GMBH & CO. KG | Brique de balayage pour récipients métallurgiques |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4462576A (en) * | 1982-02-24 | 1984-07-31 | Didier-Werke Ag | Apparatus for supplying gas through the wall of a metallurgical container |
LU84213A1 (fr) * | 1982-06-18 | 1983-11-23 | Arbed | Dispositif pour vidanger des recipients metallurgiques |
DE3318422C2 (de) * | 1983-05-20 | 1985-03-21 | Didier-Werke Ag, 6200 Wiesbaden | Gasspülanordnung und Verfahren zur Betätigung einer derartigen Anordnung |
AT382889B (de) * | 1984-03-15 | 1987-04-27 | Voest Alpine Ag | Spueleinrichtung fuer ein metallurgisches gefaess |
US4754954A (en) * | 1986-01-29 | 1988-07-05 | Lazcano Navarro Arturo | Refractory device for introducing a gas into a molten metal and a method for making the device |
JPH03104067U (fr) * | 1990-02-05 | 1991-10-29 | ||
US7192989B2 (en) * | 2002-12-20 | 2007-03-20 | Akzo Nobel N.V. | Method and expansion device for preparing expanded thermoplastic microspheres |
CN106825533A (zh) * | 2015-12-03 | 2017-06-13 | 刘得顺 | 一种可修复组合型透气砖的制作方法 |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE498983A (fr) * | 1949-11-03 | 1951-02-15 | ||
DE1726983U (de) * | 1956-05-29 | 1956-07-26 | Aluminiumwerke Nuernberg G M B | Vorrichtung zur gaseinfuehrung in metallische schmelzen. |
US3610602A (en) * | 1969-10-14 | 1971-10-05 | United States Steel Corp | Gas-permeable refractory plug and method |
DE1533886B2 (de) * | 1966-06-27 | 1975-04-03 | L'air Liquide, S.A. Pour L'etude Et L'exploitation Des Procedes Georges Claude, Paris | Vorrichtung zum Einblasen eines Strömungsmittels In einen eine Metallschmelze enthaltenden Behälter |
GB1452909A (en) * | 1973-10-24 | 1976-10-20 | Electricity Council | Injectors for injecting gas into molten metal |
US4053147A (en) * | 1975-04-24 | 1977-10-11 | Swiss Aluminium Ltd. | Device for introduction of gases into reaction vessels containing fluids |
LU81208A1 (fr) * | 1979-04-25 | 1980-12-16 | Arbed | Dispositif pour l'injection de gaz a travers le fond dans le bain metallique contenu dans un recipient d'affinage |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE635868A (fr) * | 1962-08-07 | |||
JPS52722B2 (fr) * | 1973-01-25 | 1977-01-10 | ||
JPS505849U (fr) * | 1973-05-14 | 1975-01-22 | ||
SE392479B (sv) * | 1974-03-20 | 1977-03-28 | Asea Ab | Forma vid metallurgiska konvertrar och smeltugnar |
JPS5610433Y2 (fr) * | 1976-03-24 | 1981-03-09 | ||
CS241483B2 (en) * | 1980-06-25 | 1986-03-13 | Arbed | Refractory building body |
-
1980
- 1980-07-09 LU LU82597A patent/LU82597A1/de unknown
-
1981
- 1981-06-15 EP EP81630045A patent/EP0043787B1/fr not_active Expired
- 1981-06-15 AT AT81630045T patent/ATE7310T1/de not_active IP Right Cessation
- 1981-06-15 DE DE8181630045T patent/DE3163373D1/de not_active Expired
- 1981-06-18 ZA ZA814143A patent/ZA814143B/xx unknown
- 1981-06-25 ES ES1981259133U patent/ES259133Y/es not_active Expired
- 1981-07-02 PT PT73305A patent/PT73305B/pt unknown
- 1981-07-06 BR BR8104287A patent/BR8104287A/pt not_active IP Right Cessation
- 1981-07-06 US US06/280,509 patent/US4378106A/en not_active Expired - Lifetime
- 1981-07-08 AU AU72642/81A patent/AU539753B2/en not_active Ceased
- 1981-07-09 CA CA000381399A patent/CA1176460A/fr not_active Expired
- 1981-07-09 JP JP56106333A patent/JPS5747840A/ja active Granted
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE498983A (fr) * | 1949-11-03 | 1951-02-15 | ||
DE1726983U (de) * | 1956-05-29 | 1956-07-26 | Aluminiumwerke Nuernberg G M B | Vorrichtung zur gaseinfuehrung in metallische schmelzen. |
DE1533886B2 (de) * | 1966-06-27 | 1975-04-03 | L'air Liquide, S.A. Pour L'etude Et L'exploitation Des Procedes Georges Claude, Paris | Vorrichtung zum Einblasen eines Strömungsmittels In einen eine Metallschmelze enthaltenden Behälter |
US3610602A (en) * | 1969-10-14 | 1971-10-05 | United States Steel Corp | Gas-permeable refractory plug and method |
GB1452909A (en) * | 1973-10-24 | 1976-10-20 | Electricity Council | Injectors for injecting gas into molten metal |
US4053147A (en) * | 1975-04-24 | 1977-10-11 | Swiss Aluminium Ltd. | Device for introduction of gases into reaction vessels containing fluids |
LU81208A1 (fr) * | 1979-04-25 | 1980-12-16 | Arbed | Dispositif pour l'injection de gaz a travers le fond dans le bain metallique contenu dans un recipient d'affinage |
Cited By (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0061987A1 (fr) * | 1981-03-23 | 1982-10-06 | Arbed S.A. | Procédé et dispositif pour le traitement de métaux fondus dans le cadre de la métallurgie |
EP0063532A1 (fr) * | 1981-04-22 | 1982-10-27 | Arbed S.A. | Procédé et dispositif pour la production directe de la fonte liquide |
EP0064019A1 (fr) * | 1981-04-24 | 1982-11-03 | Arbed S.A. | Procédé et installation de désulfuration de fer fondu |
FR2516938A1 (fr) * | 1981-11-23 | 1983-05-27 | Usinor | Dispositif pour l'introduction de gaz dans le bain de metal liquide |
EP0080403A1 (fr) * | 1981-11-23 | 1983-06-01 | UNION SIDERURGIQUE DU NORD ET DE L'EST DE LA FRANCE par abréviation "USINOR" | Dispositif pour l'introduction de gaz dans un bain de métal liquide |
EP0097610A1 (fr) * | 1982-06-18 | 1984-01-04 | Arbed S.A. | Procédé et dispositif pour vidanger des récipients métallurgiques |
EP0146079A2 (fr) * | 1983-12-12 | 1985-06-26 | Arbed S.A. | Pièce réfractaire perméable aux gaz |
EP0146079A3 (en) * | 1983-12-12 | 1987-01-07 | Arbed S.A. | Gas-permeable refractory plug |
US4744546A (en) * | 1986-02-03 | 1988-05-17 | Voest-Alpine Aktiengesellschaft | Flushing arrangement for a metallurgical vessel |
DE3716388C1 (de) * | 1987-05-15 | 1988-10-27 | Radex Deutschland Ag | Gasspuelstein |
EP0290766A2 (fr) * | 1987-05-15 | 1988-11-17 | Radex Deutschland Aktiengesellschaft für feuerfeste Erzeugnisse | Brique pour lavage au gaz |
EP0290766A3 (en) * | 1987-05-15 | 1989-06-28 | Radex Deutschland Aktiengesellschaft Fur Feuerfeste Erzeugnisse | Gas flushing plug |
EP0311785A1 (fr) * | 1987-10-14 | 1989-04-19 | PA-HA-GE HÜTTEN UND GIESSEREIBEDARF GMBH & CO. KG | Brique de balayage pour récipients métallurgiques |
Also Published As
Publication number | Publication date |
---|---|
PT73305B (de) | 1982-09-01 |
AU539753B2 (en) | 1984-10-11 |
JPS5747840A (en) | 1982-03-18 |
CA1176460A (fr) | 1984-10-23 |
AU7264281A (en) | 1982-01-14 |
DE3163373D1 (en) | 1984-06-07 |
US4378106A (en) | 1983-03-29 |
ES259133Y (es) | 1982-06-16 |
ZA814143B (en) | 1982-07-28 |
EP0043787B1 (fr) | 1984-05-02 |
PT73305A (de) | 1981-08-01 |
ATE7310T1 (de) | 1984-05-15 |
LU82597A1 (de) | 1982-02-17 |
ES259133U (es) | 1982-01-01 |
JPH028004B2 (fr) | 1990-02-22 |
BR8104287A (pt) | 1982-03-23 |
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