EP2315859B1 - Seal plug for a tiltable converter - Google Patents
Seal plug for a tiltable converter Download PDFInfo
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- EP2315859B1 EP2315859B1 EP09776099.5A EP09776099A EP2315859B1 EP 2315859 B1 EP2315859 B1 EP 2315859B1 EP 09776099 A EP09776099 A EP 09776099A EP 2315859 B1 EP2315859 B1 EP 2315859B1
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- sealing plug
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- plug
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- 238000007789 sealing Methods 0.000 claims description 35
- 239000011521 glass Substances 0.000 claims description 32
- 239000011819 refractory material Substances 0.000 claims description 24
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 24
- 229910052500 inorganic mineral Inorganic materials 0.000 claims description 23
- 239000011707 mineral Substances 0.000 claims description 23
- 239000007788 liquid Substances 0.000 claims description 18
- QXJJQWWVWRCVQT-UHFFFAOYSA-K calcium;sodium;phosphate Chemical compound [Na+].[Ca+2].[O-]P([O-])([O-])=O QXJJQWWVWRCVQT-UHFFFAOYSA-K 0.000 claims description 17
- 229910000831 Steel Inorganic materials 0.000 claims description 15
- 239000010959 steel Substances 0.000 claims description 15
- 239000011230 binding agent Substances 0.000 claims description 12
- 239000002184 metal Substances 0.000 claims description 11
- 238000010079 rubber tapping Methods 0.000 claims description 11
- 239000004927 clay Substances 0.000 claims description 10
- 239000000306 component Substances 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 9
- 239000000654 additive Substances 0.000 claims description 7
- 239000002480 mineral oil Substances 0.000 claims description 7
- 235000010446 mineral oil Nutrition 0.000 claims description 7
- 239000000203 mixture Substances 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 claims description 5
- 230000007423 decrease Effects 0.000 claims description 4
- 239000011888 foil Substances 0.000 claims description 3
- 239000004014 plasticizer Substances 0.000 claims description 3
- 239000002699 waste material Substances 0.000 claims 2
- 229910000323 aluminium silicate Inorganic materials 0.000 claims 1
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 claims 1
- 238000003860 storage Methods 0.000 description 9
- 229920006328 Styrofoam Polymers 0.000 description 6
- 239000002893 slag Substances 0.000 description 6
- 239000008261 styrofoam Substances 0.000 description 6
- 210000000078 claw Anatomy 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 239000004033 plastic Substances 0.000 description 3
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000000470 constituent Substances 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000000368 destabilizing effect Effects 0.000 description 2
- 239000004615 ingredient Substances 0.000 description 2
- 150000004760 silicates Chemical class 0.000 description 2
- 235000021513 Cinchona Nutrition 0.000 description 1
- 241000157855 Cinchona Species 0.000 description 1
- 240000003517 Elaeocarpus dentatus Species 0.000 description 1
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000010309 melting process Methods 0.000 description 1
- 238000010310 metallurgical process Methods 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 238000012549 training Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B7/00—Blast furnaces
- C21B7/12—Opening or sealing the tap holes
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B7/00—Blast furnaces
- C21B7/12—Opening or sealing the tap holes
- C21B7/125—Refractory plugging mass
-
- 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
-
- 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
- C21C5/4653—Tapholes; Opening or plugging thereof
-
- 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
- F27D3/15—Tapping equipment; Equipment for removing or retaining slag
-
- 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
- F27D3/15—Tapping equipment; Equipment for removing or retaining slag
- F27D3/1509—Tapping equipment
- F27D3/1536—Devices for plugging tap holes, e.g. plugs stoppers
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Carbon Steel Or Casting Steel Manufacturing (AREA)
- Sealing Material Composition (AREA)
- Treatment Of Steel In Its Molten State (AREA)
- Furnace Charging Or Discharging (AREA)
Description
Die Erfindung betrifft einen Verschlussstopfen für das Abstichloch eines kippbaren Konverters, der von außerhalb des Konverters bis zur Konverterinnenseite in das Abstichloch einführbar und dort festsetzbar ist und dessen Bestandteile Feuerfestmaterial mit Tonbestandteilen, Bindern, Wasser und Mineralöl mit dem flüssigen Stahl zusammen wieder aus dem Abstichloch ausschwemmbar sind. Außerdem betrifft die Erfindung ein Verfahren zum Herstellen eines für das zeitweise Verschließen des Abstichloches eines kippbaren Konverters zu verwendenden Verschlussstopfen bestehend aus einem Tonbestandteil, Binder, Wasser und Mineralöl sowie Zusatzstoffe aufweisenden Feuerfestmaterial.The invention relates to a sealing plug for the tap hole of a tiltable converter, which can be introduced from outside the converter to the converter inside in the tap hole and fixed there and its constituents refractory material with clay components, binders, water and mineral oil with the liquid steel together again ausschwemmbar from the tap hole are. In addition, the invention relates to a method for producing a closure plug to be used for the temporary closing of the tapping hole of a tiltable converter consisting of a clay constituent, binder, water and mineral oil and additives refractory material.
Kippbare Konverter sind mit einer die Konverterwand durchörternden Auslauföffnung bzw. einem Abstichloch ausgerüstet, um beim Kippen des Konverters den flüssigen Stahl in die Abstichpfanne oder das Transportgefäß zu überführen. Zum Entleeren wird der Konverter gekippt, sodass der Stahl durch das Abstichloch abströmen kann. Da auf dem flüssigen Stahl stets spezifisch leichtere Schlacke unterschiedlicher Viskosität aufschwimmt, gelangt diese zwangsweise beim Kippvorgang zuerst in das Abstichloch und somit in mehr oder weniger großer Menge in die Abstichpfanne bzw. den Transportbehälter. Für zahlreiche nachfolgende metallurgische Prozesse ist das Vorhandensein von sauerstoffreicher und häufig mit Phosphor oder Schwefel angereicherter Schlacke von erheblichem Nachteil. Von daher hat man mit Erfolg einen Verschlussstopfen entwickelt (
Der Erfindung liegt daher die Aufgabe zu Grunde, einen gewichtsmäßig leichten, aus dem Abstichloch über den flüssigen Stahl ausschwemmbaren Verschlussstopfen mit hoher Lagerstabilität zu schaffen.The invention is therefore based on the object to provide a lightweight lightweight, ausschwemmbaren from the tap hole on the liquid steel sealing plug with high storage stability.
Die Aufgabe wird efindungsgemäß dadurch gelöst, dass das Feuerfestmaterial mit mineralischen Glashohlkugeln vermischt ist, die über eine raue Oberfläche begrenzt Wasser aufnehmend ausgebildet sind.The object is achieved according to the invention in that the refractory material is mixed with mineral glass hollow spheres which are designed to absorb water over a rough surface in a limited manner.
Durch eine entsprechende Ergänzung des Feuerfestmaterials und den Verzicht auf die leicht destabilisierenden Styroporkörner bzw. -kugeln, erhält man bei Zumischung entsprechender mineralischer Glashohlkugeln ein vorteilhaft elastisches Material, das auch praktisch auf Dauer stabil bleibt. Da die Glashohlkugeln, die eine entsprechende Oberfläche aufweisen, Wasser aufnehmen und dieses auch gezielt halten, entwickelt sich der Wasserhaushalt des fertigen Verschlussstopfens sehr positiv. Die Lagerfähigkeit wird um rund 100 % gesteigert, sodass eine Lagerung von mehreren Monaten problemlos möglich wird.By an appropriate supplement of the refractory material and the abandonment of the easily destabilizing styrofoam grains or spheres, one obtains when admixing corresponding mineral glass hollow spheres an advantageous elastic material, which also remains stable in the long term practically. Since the hollow glass spheres, which have a corresponding surface, absorb water and also keep it targeted, the water balance of the finished sealing plug develops very positively. The shelf life is increased by about 100%, so that a storage of several months is easily possible.
Nach einer zweckmäßigen Ausbildung der Erfindung ist vorgesehen, dass die mineralischen Glashohlkugeln einen Durchmesser von 0,2 - 5 mm, vorzugsweise 0,5 - 1 mm aufweisen. Derartige Glashohlkugeln sind vorteilhaft stabil, lassen sich gut untermischen und vertragen sich hervorragend mit den Tonbestandteilen, die sie gezielt während der Lagerung mit Wasser versorgen, sodass die Tonbestandteile ihre Flexibilität bewahren. Die mineralischen Glashohlkugeln führen wie von der Aufgabe gefordert, zu einer erheblichen Gewichtsreduzierung und zwar auch bei den geforderten relativ geringen Durchmessern. Ersetzt man den Anteil Styroporkugeln durch Glashohlkugeln, so sinkt das Gesamtgewicht des Verschlussstopfens um weit mehr als 20 %.According to an expedient embodiment of the invention, it is provided that the mineral glass hollow spheres have a diameter of 0.2 to 5 mm, preferably 0.5 to 1 mm. Such glass hollow spheres are advantageously stable, can be mixed in well and work well with the clay components that supply them specifically during storage with water, so that the clay components retain their flexibility. The mineral glass bubbles lead, as required by the task, to a significant reduction in weight and indeed in the required relatively small diameters. If the proportion of styrofoam balls is replaced by glass hollow spheres, the total weight of the sealing plug drops by far more than 20%.
Etwa genau 20 % Gewichtsreduzierung erreicht man, wenn der Volumenanteil der mineralischen Glashohlkugeln 5 - 40 %, vorzugsweise 10 - 30 % vom gesamten Feuerfestmaterial beträgt. Gerade bei den 10 - 30 % weist der Verschlussstopfen die notwendige Stabilität und eben die längere Lagerungsmöglichkeit auf, sodass er insgesamt mit seinem verringerten Gewicht wesentlich besser zu handhaben und zu lagern und auch einzusetzen ist.Approximately exactly 20% weight reduction is achieved if the volume fraction of mineral glass bubbles is 5 to 40%, preferably 10 to 30%, of the total refractory material. Especially in the 10 - 30%, the stopper has the necessary stability and just the longer storage possibility, so that he is overall much better to handle and store with its reduced weight and also to use.
Weiter oben ist darauf hingewiesen worden, dass die begrenzt Wasser aufnehmend ausgebildeten Glashohlkugeln eine besondere Außenfläche aufweisen, wobei dies insbesondere dann der Fall ist, wenn die mineralischen Glashohlkugeln Blähglaskugeln sind. Dieses Blähglas erhält beim Herstellen keine glatte Oberfläche, sondern vielmehr die gewünschte raue Oberfläche, in die sich Wasserpartikel vorteilhaft einlagern können.It has been pointed out above that the hollow glass spheres receiving a limited amount of water have a special outer surface, this being the case in particular when the mineral glass hollow spheres are expanded glass spheres. This expanded glass does not receive a smooth surface during manufacture, but rather the desired rough surface into which water particles can advantageously be stored.
Besonders vorteilhaft ist es, wenn die mineralischen Glashohlkugeln aus Altglas hergestelltem Blähglas bestehen, weil damit nicht nur gezielt das Blähglas die gewünschte Ausbildung bekommt, sondern auch der Preis günstig gehalten werden kann, was sich beim Verkauf des Verschlussstopfens als vorteilhaft erweist.It is particularly advantageous if the mineral glass hollow spheres consist of blown glass produced from recycled glass, because this not only specifically gives the blown glass the desired formation, but also keeps the price low, which proves to be advantageous when selling the sealing plug.
Das Abstichloch erhält nicht zuletzt durch das Durchfließen des flüssigen und damit heißen Stahls eine unterschiedliche Form. Dabei hat sich als besonders zweckmäßig erwiesen, den aus dem Feuerfestmaterial mit den mineralischen Glashohlkugeln bestehenden Stopfen zu einem Zylinder zu formen, der dann nach dem Einführen in das Abstichloch gegen die Wände dieses Abstichloches verpresst werden kann. Die Zylinderform passt sich eigentlich optimal an jede Form des Abstichloches an, auch wenn dieses im Laufe der Standzeit die Form insgesamt etwas verändert.The tapping hole receives not least by the flow of liquid and thus hot steel a different shape. It has proved to be particularly useful to form the existing of the refractory material with the mineral glass bubbles hollow plug to a cylinder, which can then be pressed after insertion into the tap hole against the walls of this tap hole. The cylindrical shape actually adapts optimally to any shape of the tap hole, even if this changes the overall shape over the course of its useful life.
Dort, wo die Form des Abstichloches trichterförmig ist, egal, ob in Richtung Ausfluss oder Einlauf ist es von Vorteil, wenn der Stopfen die Form eines Kegelstumpfes aufweist. Er kann dann in der entsprechenden Richtung in das trichterförmige Abstichloch eingeführt und dort dann durch Verpressen festgesetzt werden.Where the shape of the taphole is funnel-shaped, whether in the direction of the outflow or the inlet, it is advantageous if the plug has the shape of a truncated cone. He can then be inserted in the appropriate direction in the funnel-shaped tap hole and then fixed there by pressing.
Bei den bekannten Verschlussstopfen hat die obere Verformplatte von vornherein eine trichterförmige Ausbildung, d. h. sie geht entsprechend in das Rohrstück über. Nach einer Weiterbildung gemäß der Erfindung ist vorgesehen, dass der Stopfen eine Innenbohrung und eine obere und untere Verformplatte aufweist, wobei die Dicke der oberen Verformplatte, die in die Innenbohrung übergehend ausgebildet ist, zur Innenbohrung hin zunehmend ausgeführt ist. Durch diese besondere Formgebung der oberen Verformplatte wird erreicht, dass zwar zunächst der gesamte Stopfen bzw. die obere Seite sich gegen die untere Verformplatte bewegt, aber mit zunehmenden Druck eilt der mittlere Teil der oberen Verformplatte vor, sodass der zweckmäßige Trichter entsteht. Vorteil ist, dass der Stopfen selbst erst mit dem Bewegen der oberen Verformplatte druckbeaufschlagt wird und nicht bereits beim Aufsetzen einer entsprechend selbst geformten Verformplatte.In the case of the known sealing plugs, the upper deforming plate has a funnel-shaped design from the outset, that is to say it goes over into the pipe section accordingly. According to a development according to the invention it is provided that the plug has an inner bore and an upper and lower Verformplatte wherein the thickness of the upper Verformplatte, which is formed transiently in the inner bore, is increasingly carried out to the inner bore. By this special shape of the upper Verformplatte is achieved that, although initially the entire plug or the upper side moves against the lower Verformplatte, but with increasing pressure hurried before the middle part of the upper Verformplatte, so that the appropriate funnel is formed. Advantage is that the plug itself is pressurized only with the movement of the upper Verformplatte and not already when placing a correspondingly self-shaped Verformplatte.
Nach einer weiteren Ausbildung ist vorgesehen, dass die obere Verformplatte aus mehreren Metallringen unterschiedlicher Flexibilität oder Stabilität zusammengesetzt ist, wobei die Flexibilität der Metallringe zum Außenkranz abnehmend gewählt ist. Bei einer derartigen Ausbildung ist ebenfalls erreicht, dass sich ein Trichter in der Mitte bildet, der das Auslaufen des flüssigen Stahls begünstigen soll. Hier verformt sich die aus Metallringen bestehende obere Verformplatte im Bereich des Rohrstücks voreilend, während der Außenkranz stabiler bleibt bzw. sich letztlich gar nicht verformt und somit dafür sorgt, dass der gesamte Stopfen sich entsprechend verformt und sich gegen die Lochwand bewegt und sich dann festsetzt.According to a further embodiment it is provided that the upper deformation plate is composed of a plurality of metal rings of different flexibility or stability, wherein the flexibility of the metal rings is selected to decrease the outer ring. With such a design is also achieved that forms a funnel in the middle, which is to promote the leakage of the liquid steel. Here deforms the consisting of metal rings upper Verformplatte in the region of the pipe section leading, while the outer ring remains stable or ultimately not deformed and thus ensures that the entire plug deforms accordingly and moves against the hole wall and then sets.
Die entsprechende Verformung bzw. das Zusammenpressen des Stopfens erreicht man besonders gut, wenn die obere Verformplatte und ein in die Innenbohrung eingeführtes Rohrstück eine Einheit bilden, wobei die untere Verformplatte als Widerlager dienend ausgebildet ist. Bei einer derartigen Ausbildung besteht die Möglichkeit, praktisch am Rohrstück zu ziehen, um so die obere Verformplatte in Richtung untere Verformplatte zu bewegen und dabei den dazwischen liegenden Feuerfestmaterialkorpus zu verformen. Ob dies nun zweckmäßiger ist oder wie bisher mit einer durch das Rohrstück hindurchschiebbaren Ziehkralle zu arbeiten, kann dahingestellt bleiben, jedenfalls ist auch so das gewünschte Festsetzen des Stopfens im Abstichloch zu erreichen. Bei dieser Ausführung ist weiter die Möglichkeit gegeben, entweder der oberen Verformplatte wie bisher die Trichterform zu geben oder aber mit den Metallringen zu arbeiten oder den unterschiedlich dicken Verformplatten. Um für die Schlacke am innenseitigen Rand wenig Platz zu lassen, wird die obere Verformplatte möglichst mit dem Rand abschließen. Von daher sollte möglichst die untere Verformplatte beweglich sein.The corresponding deformation or compression of the plug is achieved particularly well when the upper Verformplatte and introduced into the inner bore pipe piece form a unit, wherein the lower Verformplatte is designed as an abutment. In such a configuration, it is possible to pull virtually on the pipe section so as to move the upper Verformplatte towards the lower Verformplatte and thereby deform the intermediate refractory material body. Whether this is more expedient or to work as before with a push-pull claw pushed through the pipe section, can be left undecided, in any case, so is the desired setting of the plug in the taphole to achieve. In this embodiment, the possibility is further given, either the upper Deformation plate as before give the funnel shape or to work with the metal rings or the different thickness deformation plates. In order to leave little space for the slag on the inside edge, the upper deforming plate will end as far as possible with the edge. Therefore, if possible, the lower deforming plate should be movable.
Nach den vorhergehenden Vorrichtungsansprüchen ist ein Stopfen erhöhter Stabilität und verringerten Eigengewichtes unter Schutz gestellt. Bei einem derartigen Verschlussstopfen besteht das zwischen dem oberen und unteren Verformplatte anzuordnende Feuerfestmaterial aus
- 10 - 30 Gew. % mineralische, aus Blähglas bestehende Glashohlkugeln,
- 20 - 40 Gew. % Bindeton ausgesuchter Qualität,
- 20 - 40 Gew. % Tonerdesilikat,
- 1 - 20 Gew. % Wasser
- 5 - 20 Gew. % Mineralöl,
- 0,5 - 3 Gew. % Plastifizierer,
- 0,1 - 2 Gew. % Verflüssiger,
- 0,1 -2 Gew. % temporäre Binder,
- 0,1 - 5 Gew. % permanente Binder
- 10 - 30% by weight of mineral glass bubbles consisting of expanded glass,
- 20-40% by weight of selected quality cinchona
- 20-40% by weight of alumina silicate,
- 1 - 20% by weight of water
- 5-20% by weight of mineral oil,
- 0.5-3 wt.% Plasticizer,
- 0.1-2% by weight of liquefier,
- 0.1-2% by weight temporary binder,
- 0.1 - 5 wt.% Permanent binder
Bei der Herstellung eines derartigen Verschlussstopfens, der für das zeitweise Verschließen des Abstichloches eines kippbaren Konverters vorgesehen ist, müssen die einzelnen Bestandteile, d. h. die Tonbestandteile, Binder, Wasser und Mineralöl sowie die verschiedenen Zusatzstoffe gleichmäßig zu einem Feuerfestmaterial zusammengemischt werden. Dabei sieht die Erfindung vor, dass als Zusatzstoffe mineralische Glashohlkugeln mit rauer Oberfläche eingesetzt werden, die vor dem Vermischen mit den anderen Mischungsbestandteilen gewässert werden und dabei bis zu 100 % ihres Eigengewichtes an Wasser an sich binden. Weiter vorne ist bereits darauf hingewiesen worden, dass es sich bei diesen Glashohlkugeln um eine besondere Art von Glashohlkugeln handelt, nämlich solche mineralischen mit einer besonderen Oberfläche, die geeignet sind, Wasser an sich zu binden oder auch andere Flüssigkeiten. Hierbei hat es sich als besonders zweckmäßig erwiesen, dass als mineralischen Hohlkugeln aus Altglas hergestellte Blähglaskugeln eingesetzt werden. Diese Blähglaskugeln haben eine raue Oberfläche, die geeignet ist, entsprechende Mengen an Feuchtigkeit, d. h. insbesondere Wasser, an sich zu binden und dieses auch nach dem Einmischen in die übrigen Bestandteile so lange zu behalten, bis diese anderen Bestandteile die Feuchtigkeit benötigen und dann von den Blähglaskugeln aufnehmen können. Dabei bleiben insbesondere der Bindeton und die Tonerdesilikate so elastisch oder nachgiebig, dass sie auch nach längeren Liegezeiten oder Lagerzeiten immer noch einwandfrei verarbeitet werden können.In the production of such a closure plug, which is intended for the temporary closing of the tapping hole of a tiltable converter, the individual components, d. H. the clay components, binder, water and mineral oil as well as the various additives are mixed together evenly to a refractory material. The invention provides that are used as additives mineral glass hollow spheres with a rough surface, which are watered before mixing with the other mixture components and thereby bind up to 100% of its own weight of water itself. Earlier it has already been pointed out that these glass hollow spheres are a special type of hollow glass spheres, namely those mineral with a special surface which are suitable for binding water or other liquids. It has proved to be particularly useful that produced as mineral hollow spheres made of glass blown glass balls. These blown glass spheres have a rough surface that is capable of containing appropriate amounts of moisture, ie. H. especially water, to bind to and keep this even after mixing in the remaining ingredients until these other ingredients need moisture and then can absorb from the Blähglaskugeln. In particular, the binding clay and the toner silicates remain so elastic or yielding that they can still be processed properly even after prolonged periods of storage or storage.
Eine besonders gut zu lagernder Verschlussstopfen kann verfahrensgemäß damit erreicht werden, dass das Gemisch nach dem Mischvorgang geformt, dabei oder danach mit den Verformplatten und Rohrstück versehen und dann in Folie rundum dicht verpackt wird. Dies bedeutet, dass zunächst einmal das gesamte Feuerfestmaterial einschließlich der mineralischen, aus Blähglas bestehenden Glashohlkugeln hergestellt wird, dieses dann in die entsprechende Form, beispielsweise die eines Zylinders oder die eines abgeschnittenen Kegels gebracht wird, um dann mit Rohrstück und Verformplatten versehen zu werden und mit Folie rundum versiegelt zu werden. Ein so hergestellter Verschlussstopfen ist versandfertig und kann beim Hersteller oder beim Anwender über längere Zeiträume, d. h. mindestens bis zu einem halben Jahr sicher gelagert werden, um dann im Konverter zum Einsatz zu kommen. Auch nach dieser langen Lagerzeit ist er einwandfrei verformbar, wobei es theoretisch auch möglich ist, den eigentliche Stopfen ohne die obere Verformplatte und das Rohrstück zu versenden und diese Teile erst kurz vor dem Einsatz anzubringen, unabhängig davon ist der Stopfen selbst bzw. der Stopfenkörper immer einwandfrei zu verarbeiten. Er verfügt über die optimale Stabilität, hat ein deutlich verringertes Eigengewicht, kann also von daher auch besser gehändelt werden und kann aufgrund seiner guten Handhabbarkeit genau in den Endbereich des Abstichloches gebracht und dort festgesetzt werden, sodass der Anteil eventuell sich festsetzender Schlacke auf das Mindestmaß reduziert werden kann.According to the method, a closure plug which can be stored particularly well can be achieved by shaping the mixture after the mixing process, while or afterwards providing it with the forming plates and tube piece, and then packing it all around tightly in foil. This means that first of all the entire refractory material including the mineral, made of expanded glass hollow glass balls is made, this is then brought into the appropriate form, for example, a cylinder or a truncated cone to be then provided with pipe and Verformplatten and with Foil sealed all around. A sealing plug made in this way is ready to ship and can be safely stored by the manufacturer or the user for longer periods of time, ie for at least half a year, in order to then be used in the converter. Even after this long storage time he is perfectly deformable, and it is theoretically possible to ship the actual plug without the upper Verformplatte and the pipe section and attach these parts shortly before use, regardless of the plug itself or the plug body is always to process properly. It has the optimum stability, has a significantly reduced dead weight, so can therefore be handled better and can be due to its good handling brought exactly in the end of the tap hole and fixed there, so that the proportion of possibly settling slag is reduced to the minimum can be.
Die Erfindung zeichnet sich insbesondere dadurch aus, dass ein Verschlussstopfen und ein Verfahren zu Herstellung dieses Stopfens geschaffen ist, die einen Verschlussstopfen für den Einsatz in kippbaren Konvertern zur Verfügung stellen, der sich deshalb optimal verarbeiten lässt, weil er über große Zeiträume die notwendige Plastifizierbarkeit aufweist, in seiner gesamten Abmessung die notwendige Feuchtigkeit und damit Verformbarkeit behält und aufgrund seines geringeren Gewichtes noch deutlich besser zu verarbeiten ist, als der mit Styropor angereicherte Verschlussstopfens des Standes der Technik. Diese besonderen Eigenheiten und Eigenschaften des erfindungsgemäßen Verschlussstopfens erweisen sich als besonders vorteilhaft, weil sie die Möglichkeit geben, diese Verschlussstopfen auch über große Entfernungen und damit entsprechende Zeiträume rund um die Welt zu versenden. Sie sind nicht nur aufgrund ihrer stabilen Eigenschaft während des Transportes optimal in Form zu halten, sondern auch bei Ihrer Lagerung beim Anwender. Sie stehen dann dem Anwender genau in der vorgegebenen Form beim Einsatz zur Verfügung und weisen dann immer noch die notwendige Verformbarkeit auf, sodass sie immer sicher und gleichmäßig in dem jeweiligen Abstichloch positioniert werden können.The invention is characterized in particular by the fact that a closure plug and a method for producing this plug is provided, which provide a closure plug for use in tiltable converters, which can therefore be optimally processed because it has the necessary plastiability over long periods of time , Retains the necessary moisture and thus deformability in its entire dimension and is much better to handle due to its lower weight than the styrofoam-enriched sealing plug of the prior art. These special features and properties of the sealing plug according to the invention prove to be particularly advantageous because they give the opportunity to send these plugs over long distances and thus corresponding periods around the world. They are not only due to their stable property during transport to keep in optimal shape, but also in your storage at the user. They are then available to the user exactly in the given form during use and then still have the necessary deformability, so that they can always be positioned safely and evenly in the respective tap hole.
Weitere Einzelheiten und Vorteile des Erfindungsgegenstandes ergeben sich aus der nachfolgenden Beschreibung der zugehörigen Zeichnung, in der ein bevorzugtes Ausführungsbeispiel mit den dazu notwendigen Einzelheiten dargestellt ist. Es zeigen:
Figur 1- einen Konverter während des Auslaufens des flüssigen Stahls durch das im Konverter vorgesehene Abstichloch,
Figur 2- einen Schnitt durch den Konverterinnenbereich am Abstichloch mit eingeführtem, aber noch nicht verformten Verschlussstopfen,
Figur 3- einen vergrößert wiedergegebenen Verschlussstopfen,
- Figur 3a - 3c
- unterschiedlich ausgebildete obere Verformplatten im Schnitt,
Figur 4- ein Abstichloch im Schnitt mit zylindrischem Querschnitt und zylindrischem Verschlussstopfen,
Figur 5- ein Abstichloch im nach Innen gerichteter Trichterform mit konisch ausgebildetem Stopfen,
Figur 6- ein Abstichloch im Schnitt mit nach außen gerichteter Trichterform mit eingesetztem zylindrischem Stopfen,
Figur 7- ein Abstichloch im Schnitt in X-Form, wobei ein konischer Stopfen wiedergegeben ist und
Figur 8- die Draufsicht auf die obere, aus mehreren Ringen zusammengesetzte Verformplatte.
- FIG. 1
- a converter during the outflow of the liquid steel through the tapping hole provided in the converter,
- FIG. 2
- a section through the converter inner region at the tap hole with inserted but not yet deformed sealing plug,
- FIG. 3
- an enlarged reproduced sealing plug,
- Figure 3a - 3c
- differently shaped upper deformation plates in section,
- FIG. 4
- a taphole in section with a cylindrical cross-section and a cylindrical plug,
- FIG. 5
- a taphole in the inwardly directed funnel shape with conical plug,
- FIG. 6
- a taphole in section with outwardly directed funnel shape with inserted cylindrical plug,
- FIG. 7
- a tap hole in the X-shaped section, wherein a conical plug is reproduced and
- FIG. 8
- the top view of the upper, composed of several rings Verformplatte.
Das Abstichloch 3 reicht von der Außenwand 4 bis zur Konverterinnenseite 5 und ist hier zumindest zylinderisch geformt. Der flüssige Stahl 6 fließt hier in einen Transportwagen 8 und kann dann zum nächsten Bearbeitungsschritt verfahren werden. Der hier nicht gezeigte Verschlussstopfen 1 ist in dieser Position des Konverters 2 bereits lange ausgeschwemmt und befindet sich wenn man so will mit im Transportwagen 8, wobei die Menge so gering ist, dass sie keine Rolle spielt.The
Mit Hilfe der
Alle genannte Merkmale, auch die den Zeichnungen allein zu entnehmenden, werden allein und in Kombination als erfindungswesentlich angesehen.All mentioned features, including the drawings to be taken alone, are considered to be essential to the invention alone and in combination.
Claims (14)
- Sealing plug for the tapping hole (3) of a tiltable converter (2) that can be introduced into the tapping hole (3) from outside the converter (2) through to the inside of the converter (5) and fixed in place there and whose components refractory material (10) with clay components, binders, water and mineral oil can be flushed out of the tapping hole (3) with the liquid steel (6),
characterised by the fact
that the refractory material (10) is mixed with mineral hollow glass spheres (11, 12, 13, 14) that are designed to absorb water to a limited extent through a rough surface. - Sealing plug in accordance with Claim 1,
characterised by the fact
that the mineral hollow glass spheres (11, 12, 13, 14) have a diameter of 0.2 - 5 mm, preferably 0.5 - 1 mm. - Sealing plug in accordance with one of the above-mentioned Claims,
characterised by the fact
that the volume share of the mineral hollow glass spheres (11, 12, 13, 14) amounts to 5 - 40%, preferably 10 - 30% of the total refractory material (10). - Sealing plug in accordance with one of the above-mentioned Claims,
characterised by the fact
that the mineral hollow glass spheres (11, 12, 13, 14) are expanded glass spheres. - Sealing plug in accordance with one of the above-mentioned Claims,
characterised by the fact
that the mineral hollow glass spheres (11, 12, 13, 14) consist of expanded glass made from waste glass. - Sealing plug in accordance with one of the above-mentioned Claims,
characterised by the fact
that the plug (1) consisting of the refractory material (10) with the mineral hollow glass spheres (11, 12, 13, 14) is shaped into a cylinder (15). - Sealing plug in accordance with one of the above-mentioned Claims,
characterised by the fact
that the plug (1) has the shape of a truncated cone (16). - Sealing plug in accordance with one of the above-mentioned Claims,
characterised by the fact
that the plug (1) has an internal thread (18) and an upper and lower forming plate (19, 20), whereby the thickness of the upper forming plate (19), which is formed to pass into the internal thread (18), is constructed to increase towards the internal thread (18). - Sealing plug in accordance with one of the above-mentioned Claims,
characterised by the fact
that the upper forming plate (19) is composed of several metal rings (23, 24, 25) of different flexibility or stability, whereby the flexibility of the metal rings (23, 24, 25) is selected to decrease towards the outer rim (26). - Sealing plug in accordance with one of the above-mentioned Claims,
characterised by the fact
that the upper forming plate (19) and a length of pipe (21) introduced into the internal thread (18) form a unit, whereby the lower forming plate (20) is formed to serve as a counter bearing. - Sealing plug in accordance with Claim 1,
characterised by the fact
that the plug (1) or the refractory material (10) is mixed from10 - 30% by weight mineral hollow glass spheres consisting of expanded glass,20 - 40% by weight bonding clay of selected quality,20 - 40% by weight aluminosilicate,1 - 20% by weight water5 - 20% by weight mineral oil,0.5 - 3% by weight plasticiser,0.1 - 2% by weight liquidiser,0.1 - 2% by weight temporary binders,0.1 - 5% by weight permanent binders - Process for the manufacture of a sealing plug to be used for the temporary closure of the tapping hole of a tiltable converter consisting of refractory material with a clay component, binders, water and mineral oil as well as additives
characterised by the fact
that mineral hollow glass spheres with a rough surface are used as additives that are watered before mixing with the other mixture components and thereby bind up to 100% of their own weight in water. - Process in accordance with Claim 12,
characterised by the fact
that expanded glass spheres made from waste glass are used as mineral hollow glass spheres. - Process in accordance with Claim 12,
characterised by the fact
that the mixture is formed after the mixing process, fitted then or thereafter with the forming plates and length of pipe and then packed tightly all round in foil.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102008039142A DE102008039142A1 (en) | 2008-08-21 | 2008-08-21 | Sealing plug for tilting converters |
PCT/DE2009/001160 WO2010020229A1 (en) | 2008-08-21 | 2009-08-14 | Seal plug for a tiltable converter |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2315859A1 EP2315859A1 (en) | 2011-05-04 |
EP2315859B1 true EP2315859B1 (en) | 2013-09-18 |
Family
ID=41165592
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP09776099.5A Active EP2315859B1 (en) | 2008-08-21 | 2009-08-14 | Seal plug for a tiltable converter |
Country Status (8)
Country | Link |
---|---|
US (1) | US8486327B2 (en) |
EP (1) | EP2315859B1 (en) |
JP (1) | JP5554333B2 (en) |
KR (1) | KR20110054008A (en) |
CN (1) | CN102203299B (en) |
DE (1) | DE102008039142A1 (en) |
RS (1) | RS52078B (en) |
WO (1) | WO2010020229A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102020102105A1 (en) | 2020-01-29 | 2021-07-29 | Veronica Stilkerieg | Sealing plugs for converter tap holes |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101839640B (en) * | 2010-03-15 | 2012-03-14 | 中国恩菲工程技术有限公司 | Self-heating smelting furnace |
DE102013002623A1 (en) | 2013-02-18 | 2014-08-21 | Veronica Stilkerieg | Stopper, useful for temporarily closing a tap hole of a converter, where the stopper is inserted from outer side of converter into tap hole and fixed in a region of inner side after the overflow of a liquid ash from liquid steel |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4143867A (en) * | 1974-02-14 | 1979-03-13 | Dynamit Nobel Aktiengesellschaft | Metallurgical vessel |
GB8805186D0 (en) * | 1988-03-04 | 1988-04-07 | British Steel Corp | Closures for metallurgical vessel pouring apertures |
JPH0210450U (en) * | 1988-06-27 | 1990-01-23 | ||
JP3082990B2 (en) * | 1992-03-10 | 2000-09-04 | 東芝セラミックス株式会社 | Inflatable plug |
EP0635071B1 (en) | 1992-04-07 | 1996-02-28 | STILKERIEG, Berthold | Process and device for preventing contamination of the tapping steel by flush slag in a tipping converter |
JP3078701B2 (en) * | 1994-03-18 | 2000-08-21 | 東芝セラミックス株式会社 | Inflatable plug for closing tap hole of metallurgical vessel |
JPH07260372A (en) * | 1994-03-18 | 1995-10-13 | Toshiba Ceramics Co Ltd | Expansive plug for stopping taphole of container for metallurgy |
DE19848004B4 (en) * | 1998-10-17 | 2006-10-12 | Stilkerieg, Berthold, Dipl.-Ing. | Apparatus for preventing contamination of the tapping steel by feed slag in a tiltable converter with improved material composition |
JP2002327210A (en) * | 2001-04-27 | 2002-11-15 | Sumitomo Metal Ind Ltd | Plug for steel tapping hole in converter |
DE102005015469A1 (en) * | 2005-04-04 | 2006-10-05 | Stilkerieg, Berthold, Dipl.-Ing. | Cylindrical plug, for the temporary closure of a converter tap hole, is composed of a mixture of clay components and hydrocarbon compounds and a thermo set resin |
CN1317237C (en) * | 2005-10-27 | 2007-05-23 | 武汉钢铁(集团)公司 | Refractory castable in use for homogeneous stopper plug of floating plug, and preparation method |
-
2008
- 2008-08-21 DE DE102008039142A patent/DE102008039142A1/en not_active Withdrawn
- 2008-10-03 RS RS20080459A patent/RS52078B/en unknown
-
2009
- 2009-08-14 KR KR1020117005781A patent/KR20110054008A/en not_active Application Discontinuation
- 2009-08-14 US US13/059,698 patent/US8486327B2/en not_active Expired - Fee Related
- 2009-08-14 CN CN2009801423867A patent/CN102203299B/en not_active Expired - Fee Related
- 2009-08-14 EP EP09776099.5A patent/EP2315859B1/en active Active
- 2009-08-14 WO PCT/DE2009/001160 patent/WO2010020229A1/en active Application Filing
- 2009-08-14 JP JP2011523300A patent/JP5554333B2/en not_active Expired - Fee Related
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102020102105A1 (en) | 2020-01-29 | 2021-07-29 | Veronica Stilkerieg | Sealing plugs for converter tap holes |
EP3859257A1 (en) | 2020-01-29 | 2021-08-04 | Veronica Stilkerieg | Stopper for converter tap holes |
Also Published As
Publication number | Publication date |
---|---|
EP2315859A1 (en) | 2011-05-04 |
WO2010020229A1 (en) | 2010-02-25 |
JP2012500334A (en) | 2012-01-05 |
DE102008039142A1 (en) | 2010-02-25 |
RS52078B (en) | 2012-06-30 |
CN102203299B (en) | 2013-09-18 |
US20110148013A1 (en) | 2011-06-23 |
JP5554333B2 (en) | 2014-07-23 |
US8486327B2 (en) | 2013-07-16 |
KR20110054008A (en) | 2011-05-24 |
CN102203299A (en) | 2011-09-28 |
RS20080459A (en) | 2010-05-07 |
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