EP0063150B1 - Process for the production of slag elements and device for its implementation - Google Patents

Process for the production of slag elements and device for its implementation Download PDF

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Publication number
EP0063150B1
EP0063150B1 EP19810902982 EP81902982A EP0063150B1 EP 0063150 B1 EP0063150 B1 EP 0063150B1 EP 19810902982 EP19810902982 EP 19810902982 EP 81902982 A EP81902982 A EP 81902982A EP 0063150 B1 EP0063150 B1 EP 0063150B1
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Prior art keywords
slag
cooling
moulding
strand
cooling zone
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EP19810902982
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German (de)
French (fr)
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EP0063150A1 (en
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Anton Hulek
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Voestalpine AG
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Voestalpine AG
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B1/00—Producing shaped prefabricated articles from the material
    • B28B1/54—Producing shaped prefabricated articles from the material specially adapted for producing articles from molten material, e.g. slag refractory ceramic materials

Definitions

  • the invention relates to a process for the production of moldings, in particular plate-shaped moldings from metallurgical slag, such as blast furnace slag, with the sensible heat of the slag being obtained, and to an apparatus for carrying out the process.
  • the invention aims to avoid these disadvantages and difficulties. It is based on the object of creating an economical method and an apparatus for carrying out the method, which enable continuous and economical production of, in particular, thin-walled, plate-shaped moldings from slag.
  • additives such as additives containing Si0 2 and / or A1 2 0 3 , are added to the molten slag, the additives serving to improve the mechanical properties in the production of glass-solidifying moldings and to increase residual stresses which occur during cooling reduce or avoid if possible.
  • the additives are expediently added in a mixer receiving the slag, which serves to even out the temperature and slag composition of the slag obtained with each blast furnace tapping, or in an inlet channel leading the slag to the mixer.
  • two cooling zones are provided, with a shaping zone for surface shaping of the cast strand being arranged between the first and second cooling zones.
  • the outflow gap is advantageously heatable and its size adjustable.
  • One or more of the cooling zones is expediently heatable.
  • the feed station is preferably preceded by a mixer, in particular a continuous rotary tube mixer, for the slag.
  • Fig. 1 shows a schematic side view (partially cut) of a plant for pouring the slag and Fig. 2 shows a section along the line 11-11.
  • a feed station for the slag which is designed as a slag collecting container, with 2 a circumferential forming belt with deflection rollers 3, 3 'and with 4 the individual shapes or plates of the forming belt are designated.
  • These plates 4 have laterally projecting flanges 5 and thus a U-shaped profile.
  • the plates 4 can be embossed or otherwise structured to produce ornamental effects.
  • Several circumferential plate belts can be arranged side by side. In the longitudinal direction, the ends of the plates 4 overlap. between both in the flange and in the bottom area, so that no slag can flow out.
  • the plates are supported on support rollers 6.
  • the viscous slag with 3 to 15 Pa s (30 to 150 poise) is allowed to flow out continuously from a horizontal outflow gap 7 of the container 1 onto the plates 4 of the forming belt 2.
  • the gap can be heated and its size can be adjusted.
  • the outflow gap can also be formed by a recess at the upper edge of the container 1, the container 1 being refilled accordingly during the pouring of the slag.
  • the slag is expediently kept in motion (for example by means of an agitator) in order to achieve temperature compensation or to be able to regulate the toughness of the slag to a predetermined value.
  • the shaping belt 2 moves continuously through a first cooling zone 8 and through a shaping zone 9, in which embossing presses 10 or roll stands with profiling rollers are provided, which run with the shaping belt for a short distance during the embossing process or remain on continuously, the strand 12 in the plates are pressed in, compacted and the surface embossed.
  • a further cooling zone 11 adjoins the shaping zone 9, after the passage of which the strand 12 is cut into individual pieces.
  • the cooling zone 11 is divided into several sections in the longitudinal direction, as a result of which a temperature profile is achieved which enables the plates to be cooled without tension or cracks.
  • the optimal temperature profile depends on the slag analysis.
  • heatable sections are also provided (Fig. 2).
  • 12 marking notches can be embossed in the molding zone in the shaping zone, along which the separation takes place.
  • the method according to the invention is particularly suitable for the production of roof tiles, floor and wall panels and similarly thin moldings.
  • a mixer 13 preferably a continuous rotary tube mixer, can be provided in front of the container 1 in order to equalize the temperature and slag composition (homogenization). If desired, additives can be introduced into this mixer.
  • the regulation of the size of the outflow gap 7 and the belt speed of the forming belt 2 takes place as a function of the plate thickness and the requirements of the slag to be cast, in which the toughness is a function of temperature and chemical composition.
  • the size of the outflow gap and the belt speed as well as the inflow are expediently controlled by means of appropriate sensors and possibly by means of a microprocessor.
  • a coil 14 is located, which is arranged within the cooling zone 8. This coil 14 is used to guide a coolant through the cooling zone 8, which is used to obtain the sensible heat of the poured slag.
  • the heated, vaporous coolant is preferably conducted in a thermodynamic cycle, which is illustrated schematically in FIG. 1.
  • 15 denotes a turbine, from which the expanded steam is guided into a condenser 16 and from there to a feed water tank 17.
  • a pump 18 the water from the feed water tank is in turn directed to the coil 14.
  • the turbine drives a generator 19. It is possible to use the steam generated in the coil 14 for other purposes, for example for heating purposes, etc.

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  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)

Abstract

For manufacturing elements made of slag material, in particular of blast furnace slag, the slag is poured, shaped and solidified. In order to carry out the continuous casting of plate-shaped slag elements, the slag is first brought at a temperature at which it is viscous or pasty and then poured in that state in the form of a strip (12) on a moulding ribbon (2).

Description

Die Erfindung betrifft ein Verfahren zur Herstellung von Formkörpern, insbesondere plattenförmigen Formkörpern aus Hüttenschlacke, wie Hochofenschlacke, unter Gewinnung der fühlbaren Wärme der Schlacke, sowie eine Vorrichtung zur Durchführung des Verfahrens.The invention relates to a process for the production of moldings, in particular plate-shaped moldings from metallurgical slag, such as blast furnace slag, with the sensible heat of the slag being obtained, and to an apparatus for carrying out the process.

Aus der GB-A-153082 ist es bekannt, die Schlacke in einzelne voneinander getrennte Formen mittels eines Fülltrichters kontinuierlich einzubringen, so daß trotz kontinuierlichen Vergie- ßens in ihren Abmessungen nur relativ kleine Schlackensteine gebildet werden, die einzeln aus den Formen ausgestoßen werden müssen. Zur Herstellung relativ flacher, plattenförmiger Formkörper, wie z. B. Dachziegeln, ist dieses Verfahren nicht geeignet, da es die der Schlacke spezifischen Erstarrungsverhältnisse (infolge ihrer sehr geringen Wärmeleitfähigkeit) nicht berücksichtigt.From GB-A-153082 it is known to continuously introduce the slag into individual, separate forms by means of a filling funnel, so that despite continuous casting, only relatively small slag stones are formed in their dimensions, which must be ejected individually from the forms. For the production of relatively flat, plate-shaped moldings, such as. B. roof tiles, this method is not suitable because it does not take into account the solidification conditions specific to the slag (due to its very low thermal conductivity).

Es ist weiters aus der DE-C-17 313 ein Verfahren zum Gießen von Hochofenschlacke bekannt, bei dem die Schlacke in eine kreisringförmige Rinne mit Trogquerschnitt eingegossen wird, u. zw. in dünnen aufeinanderliegenden Schichten. Sobald die Rinne vollgegossen ist, wird die erstarrte Schlacke aus der Rinne ausgestoßen. Während dieses Vorganges muß das Gießen unterbrochen werden. Dieses Verfahren hat den Nachteil, daß es nicht kontinuierlich angewendet werden kann. Für dünne plattenförmige Formkörper ist es ebenfalls ungeeignet.It is also known from DE-C-17 313 a method for casting blast furnace slag, in which the slag is poured into an annular trough with a trough cross-section, u. between thin layers lying on top of each other. As soon as the channel is fully poured, the solidified slag is expelled from the channel. The casting must be interrupted during this process. This method has the disadvantage that it cannot be used continuously. It is also unsuitable for thin plate-shaped articles.

Aus der US-A-2 067 313 ist ein Verfahren zum Herstellen von porösen Formkörpern aus Schlakke bekannt, bei dem die Poren im Formkörper durch Zugabe von brennbaren Stoffen und durch Einblasen von Sauerstoff in die zu vergießende Schlacke erzeugt werden. Die so aufgeschäumte Schlacke wird kontinuierlich auf ein Band gegossen, wobei vor dem Vergießen der Schlacke nicht brennbare Stoffe zugesetzt werden. Dieses bekannte Verfahren ermöglicht nur die Herstellung von Poren aufweisenden Formkörpern, wobei der damit verbundene Aufwand sehr hoch ist und zusätzliche Energieträger benötigt werden, so daß die hergestellten Formkörper kostspielig sind.From US-A-2 067 313 a process for producing porous molded articles from slag is known, in which the pores in the molded article are produced by adding combustible substances and by blowing oxygen into the slag to be poured. The foamed slag is continuously poured onto a belt, with non-combustible substances being added before the slag is poured. This known method only enables the production of molded articles with pores, the effort involved being very high and additional energy sources being required, so that the molded articles produced are expensive.

Die Erfindung bezweckt die Vermeidung dieser Nachteile und Schwierigkeiten. Ihr liegt die Aufgabe zugrunde, ein wirtschaftliches Verfahren sowie eine Vorrichtung zur Durchführung des Verfahrens zu schaffen, welche eine kontinuierliche und wirtschaftliche Herstellung von insbesondere dünnwandigen, plattenförmigen Formkörpern, aus Hüttenschlacke ermöglichen.The invention aims to avoid these disadvantages and difficulties. It is based on the object of creating an economical method and an apparatus for carrying out the method, which enable continuous and economical production of, in particular, thin-walled, plate-shaped moldings from slag.

Diese Aufgabe wird erfindungsgemäß durch die Kombination folgender Verfahrensschritte gelöst:

  • - daß die Schlacke durch Kühlung auf einen Temperaturbereich gebracht wird, in dem sie zähflüssig bzw. teigförmig ist und eine Viskosität zwischen 3 und 15 Pa - s (30 und 150 Poise) aufweist,
  • - daß die Schlacke anschließend unter Bildung eines zusammenhängenden Stranges in einen ununterbrochenen Formhohlraum eines ein U-förmiges Profil aufweisenden Formbandes kontinuierlich gegossen wird,
  • - daß der vergossene Strang in mindestens einer am Formband vorgesehenen Kühlzone unter glasiger Erstarrung gekühlt wird, und
  • - daß der Kühlzone zur Kühlung des Stranges und zur Gewinnung der fühlbaren Wärme der Schlacke ein Kühlmittel zugeführt wird, wobei das in der Kühlzone erwärmte Kühlmittel in einem thermodynamischen Kreisprozeß als Kreislaufmedium verwendet wird.
According to the invention, this object is achieved by combining the following process steps:
  • that the slag is brought to a temperature range by cooling in which it is viscous or dough-shaped and has a viscosity between 3 and 15 Pa s (30 and 150 poise),
  • the slag is then continuously poured into an uninterrupted mold cavity of a forming strip having a U-shaped profile, forming a coherent strand,
  • - That the cast strand is cooled in at least one cooling zone provided on the forming belt under glassy solidification, and
  • - That the cooling zone for cooling the strand and to obtain the sensible heat of the slag, a coolant is supplied, wherein the coolant heated in the cooling zone is used in a thermodynamic cycle as a circulating medium.

Gemäß einer bevorzugten Variante werden der geschmolzenen Schlacke Zuschlagstoffe, wie Si02 und/oder A1203 enthaltende Zuschlagstoffe, zugesetzt, wobei die Zuschlagstoffe dazu dienen, die mechanischen Eigenschaften bei der Herstellung von glasig erstarrenden Formkörpern zu verbessern sowie während der Abkühlung entstehende Eigenspannungen zu verringern bzw. möglichst zu vermeiden. Zweckmäßig werden die Zuschlagstoffe in einem die Schlakke aufnehmenden Mischer, der zur Vergleichmäßigung der Temperatur und Schlackenzusammensetzung der bei jedem Hochofenabstich anfallenden Schlacke dient, oder in einer die Schlacke zum Mischer führenden Einlaufrinne zugesetzt.According to a preferred variant, additives, such as additives containing Si0 2 and / or A1 2 0 3 , are added to the molten slag, the additives serving to improve the mechanical properties in the production of glass-solidifying moldings and to increase residual stresses which occur during cooling reduce or avoid if possible. The additives are expediently added in a mixer receiving the slag, which serves to even out the temperature and slag composition of the slag obtained with each blast furnace tapping, or in an inlet channel leading the slag to the mixer.

Eine Vorrichtung zur Durchführung des Verfahrens ist durch die Kombination folgender Merkmale gekennzeichnet:

  • - daß die Vorrichtung einen Schlackenbehälter mit einem Ausfließspalt aufweist,
  • - daß dem Ausfließspalt ein Formband mit U-förmigem Profil nachgeordnet ist, welches Formband einen in Längsrichtung desselben ununterbrochenen Formhohlraum aufweist,
  • - daß an dem Formband mindestens eine Kühlzone vorgesehen ist, in der ein Wärmetauscher zur Gewinnung der Wärme der zu kühlenden Schlacke vorgesehen ist, und
  • - daß das den Wärmetauscher durchsetzende Kühlmedium in einem thermodynamischen Kreisprozeß geführt ist.
A device for performing the method is characterized by the combination of the following features:
  • that the device has a slag container with an outflow gap,
  • that the outflow gap is followed by a forming strip with a U-shaped profile, which forming strip has an uninterrupted mold cavity in the longitudinal direction thereof,
  • - That at least one cooling zone is provided on the forming belt, in which a heat exchanger is provided for obtaining the heat of the slag to be cooled, and
  • - That the cooling medium passing through the heat exchanger is guided in a thermodynamic cycle.

Gemäß einer bevorzugten Ausführungsform sind zwei Kühlzonen vorgesehen, wobei zwischen der ersten und zweiten Kühlzone eine Formgebungszone zur Oberflächenformung des gegossenen Stranges angeordnet ist.According to a preferred embodiment, two cooling zones are provided, with a shaping zone for surface shaping of the cast strand being arranged between the first and second cooling zones.

Vorteilhaft ist der Ausfließspalt beheizbar und seine Größe einstellbar.The outflow gap is advantageously heatable and its size adjustable.

Zweckmäßig ist eine oder sind mehrere der Kühlzonen beheizbar.One or more of the cooling zones is expediently heatable.

Vorzugsweise ist der Aufgabestation ein Mischer, insbesondere ein Durchlaufdrehrohrmischer, für die Schlacke vorgeordnet.The feed station is preferably preceded by a mixer, in particular a continuous rotary tube mixer, for the slag.

Die Erfindung ist nachfolgend anhand der Zeichnung an einem Ausführungsbeispiel näher erläutert, wobei Fig. 1 eine schematische Seitenansicht (teilweise geschnitten) einer Anlage zum Gießen der Schlacke und Fig. 2 einen Schnitt gemäß der Linie 11-11 zeigen.The invention is based on the Drawing explained in more detail using an exemplary embodiment, wherein Fig. 1 shows a schematic side view (partially cut) of a plant for pouring the slag and Fig. 2 shows a section along the line 11-11.

Mit 1 ist eine Aufgabestation für die Schlacke, die als Schlackensammelbehälter ausgebildet ist, mit 2 ein umlaufendes Formband mit Umlenkrollen 3, 3' und mit 4 sind die einzelnen Formen bzw. Platten des Formbandes bezeichnet. Diese Platten 4 haben seitlich aufragende Flansche 5 und somit U-förmiges Profil. Die Platten 4 können zur Hervorbringung ornamentaler Effekte geprägt oder sonstwie strukturiert sein. Mehrere umlaufende Plattenbänder können nebeneinander angeordnet sein. In Längsrichtung überlappen sich die Enden der Platten 4, u. zw. sowohl im Flansch- als auch im Bodenbereich, so daß keine Schlacke ausfließen kann. Die Platten sind über Stützrollen 6 abgestützt. Die zähflüssige Schlacke mit 3 bis 15 Pa - s (30 bis 150 Poise) wird aus einem horizontalen Ausfließspalt 7 des Behälters 1 auf die Platten 4 des Formbandes 2 kontinuierlich ausfließen gelassen. Der Spalt ist beheizbar und in seiner Größe einstellbar. Der Ausfließspalt kann auch durch eine Ausnehmung am oberen Rand des Behälters 1 gebildet sein, wobei der Behälter 1 während des Gießens der Schlacke entsprechend nachgefüllt wird. Im Behälter 1 wird die Schlacke zweckmäßig in Bewegung (beispielsweise mittels eines Rührwerks) gehalten, um einen Temperaturausgleich zu erzielen bzw. um die Zähigkeit der Schlacke auf einen vorbestimmten Wert regeln zu können.With 1 is a feed station for the slag, which is designed as a slag collecting container, with 2 a circumferential forming belt with deflection rollers 3, 3 'and with 4 the individual shapes or plates of the forming belt are designated. These plates 4 have laterally projecting flanges 5 and thus a U-shaped profile. The plates 4 can be embossed or otherwise structured to produce ornamental effects. Several circumferential plate belts can be arranged side by side. In the longitudinal direction, the ends of the plates 4 overlap. between both in the flange and in the bottom area, so that no slag can flow out. The plates are supported on support rollers 6. The viscous slag with 3 to 15 Pa s (30 to 150 poise) is allowed to flow out continuously from a horizontal outflow gap 7 of the container 1 onto the plates 4 of the forming belt 2. The gap can be heated and its size can be adjusted. The outflow gap can also be formed by a recess at the upper edge of the container 1, the container 1 being refilled accordingly during the pouring of the slag. In the container 1, the slag is expediently kept in motion (for example by means of an agitator) in order to achieve temperature compensation or to be able to regulate the toughness of the slag to a predetermined value.

Das Formband 2 bewegt sich kontinuierlich durch eine erste Kühlzone 8 und durch eine Formgebungszone 9, in der Prägepressen 10 oder Walzgerüste mit Profilierrollen vorgesehen sind, die während des Prägevorganges mit dem Formband ein kurzes Stück mitlaufen bzw. ständig angestellt bleiben, wobei der Strang 12 in die Platten eingepreßt, verdichtet und die Oberfläche geprägt werden. An die Formgebungszone 9 schließt eine weitere Kühlzone 11 an, nach deren Durchlauf der Strang 12 in einzelne Stücke abgelängt wird. Die Kühlzone 11 ist in Längsrichtung in mehrere Sektionen unterteilt, wodurch ein Temperaturverlauf erzielt wird, der ein spannungs- bzw. rißfreies Abkühlen der Platten ermöglicht. Der optimale Temperaturverlauf ist von der Schlackenanalyse abhängig. Um eine kurzzeitige Anhebung und ein Halten der Temperatur zu ermöglichen, sind auch heizbare Sektionen vorgesehen (Fig. 2). Zur Erleichterung der Ablängung können in der Formgebungszone in den Formkörperstrang 12 Markierungskerben eingeprägt werden, entlang derer die Trennung erfolgt. Das erfindungsgemäße Verfahren ist insbesondere zur Herstellung von Dachziegeln, Boden- und Wandplatten und ähnlich dünnen Formkörpern geeignet.The shaping belt 2 moves continuously through a first cooling zone 8 and through a shaping zone 9, in which embossing presses 10 or roll stands with profiling rollers are provided, which run with the shaping belt for a short distance during the embossing process or remain on continuously, the strand 12 in the plates are pressed in, compacted and the surface embossed. A further cooling zone 11 adjoins the shaping zone 9, after the passage of which the strand 12 is cut into individual pieces. The cooling zone 11 is divided into several sections in the longitudinal direction, as a result of which a temperature profile is achieved which enables the plates to be cooled without tension or cracks. The optimal temperature profile depends on the slag analysis. In order to enable a brief increase and a maintenance of the temperature, heatable sections are also provided (Fig. 2). In order to facilitate the cutting to length, 12 marking notches can be embossed in the molding zone in the shaping zone, along which the separation takes place. The method according to the invention is particularly suitable for the production of roof tiles, floor and wall panels and similarly thin moldings.

Vor dem Behälter 1 kann ein Mischer 13, vorzugsweise ein Durchlaufdrehrohrmischer, zur Vergleichmäßigung der Temperatur und Schlakkenzusammensetzung (Homogenisierung) vorgesehen sein. In diesen Mischer können erwünschtenfalls Zuschlagstoffe eingebracht werden.A mixer 13, preferably a continuous rotary tube mixer, can be provided in front of the container 1 in order to equalize the temperature and slag composition (homogenization). If desired, additives can be introduced into this mixer.

Die Regelung der Größe des Ausfließspaltes 7 und der Bandgeschwindigkeit des Formbandes 2 erfolgt in Abhängigkeit von der Plattendicke und den Erfordernissen der zu vergießenden Schlakke, bei der die Zähigkeit eine Funktion von Temperatur und chemischer Zusammensetzung darstellt. Zweckmäßig erfolgt die Steuerung der Größe des Ausfließspaltes und der Bandgeschwindigkeit sowie des Zulaufes über entsprechende Meßfühler und eventuell über einen Mikroprozessor.The regulation of the size of the outflow gap 7 and the belt speed of the forming belt 2 takes place as a function of the plate thickness and the requirements of the slag to be cast, in which the toughness is a function of temperature and chemical composition. The size of the outflow gap and the belt speed as well as the inflow are expediently controlled by means of appropriate sensors and possibly by means of a microprocessor.

In Fig. 1 ist eine Rohrschlange 14 eingezeichnet, die innerhalb der Kühlzone 8 angeordnet ist. Diese Rohrschlange 14 dient dazu, ein Kühlmittel durch die Kühlzone 8 zu führen, das zur Gewinnung der fühlbaren Wärme der vergossenen Schlacke dient. Das erwärmte, dampfförmige Kühlmittel wird vorzugsweise in einem thermodynamischen Kreisprozeß geführt, der in Fig. 1 schematisch veranschaulicht ist. Mit 15 ist eine Turbine bezeichnet, von der der entspannte Dampf in einen Kondensator 16 geführt wird und von diesem zu einem Speisewasserbehälter 17 gelangt. Mittels einer Pumpe 18 wird das Wasser vom Speisewasserbehälter wiederum zur Rohrschlange 14 geleitet. Die Turbine treibt einen Generator 19. Es ist möglich, den in der Rohrschlange 14 entstehenden Dampf auch für andere Zwecke, beispielsweise für Heizzwecke etc., zu verwenden.In Fig. 1, a coil 14 is located, which is arranged within the cooling zone 8. This coil 14 is used to guide a coolant through the cooling zone 8, which is used to obtain the sensible heat of the poured slag. The heated, vaporous coolant is preferably conducted in a thermodynamic cycle, which is illustrated schematically in FIG. 1. 15 denotes a turbine, from which the expanded steam is guided into a condenser 16 and from there to a feed water tank 17. By means of a pump 18 the water from the feed water tank is in turn directed to the coil 14. The turbine drives a generator 19. It is possible to use the steam generated in the coil 14 for other purposes, for example for heating purposes, etc.

Claims (7)

1. A method for the production of moulded bodies, in particular of plate-like moulded bodies, of metallurgical slag, such as blast-furnace slag, by recovering the sensible heat of the slag, characterised by the combination of the following method steps:
- that the slag, by cooling, is brought to a temperature range in which it is viscous or pasty and has a viscosity of between 3 and 15 Pa - s (30 and 150 poises),
- that, subsequently, the slag is continuously cast into a non-interrupted mould cavity of a moulding belt (2) having a U-shaped profile, thus forming a coherent strand (12),
- that the cast strand (12) is cooled in at least one cooling zone (8, 11) provided at the moulding belt (2) so as to glassily solidify, and
- that a coolant is supplied to at least one cooling zone (8) to cool the strand and to recover the sensible heat of the slag, the coolant heated in the cooling zone being used as a circulatory medium in a thermodynamic circulatory process.
2. A method according to claim 1, character ised in that additives, in particular SiOz- and/or A1203-containing additives, are added to the slag prior to casting.
3. An arrangement for carrying out the method according to claim 1 or 2, characterised by the combination of the following characteristic features:
- that the arrangement comprises a slag reservoir (1) having an outflow opening (7),
- that the outflow opening (7) is followed by a moulding belt (2) having a U-shaped profile and comprising a mould cavity non-inter ruped in the longitudinal direction of the same,
- that at least one cooling zone (8) is provided at the moulding belt (2), in which a heat exchanger (14) is provided for recovering the heat of the slag to be cooled, and
- that the coolant penetrating the heat exchanger (14) is guided in a thermodynamic circulatory process.
4. An arrangement according to claim 3, characterised in that two cooling zones (8, 11) are provided, a moulding zone (9) being provided between the first and second cooling zones for moulding the surface of the cast strand (12).
5. An arrangement according to claim 3 or 4, characterised in that the outflow opening (7) is heatable and its dimension is adjustable.
6. An arrangement according to claims 3 to 5, characterised in that one or several of the cool--ing zones (8) are heatable.
7. An arrangement according to claims 3 to 6, characterised in that the slag reservoir (1) is preceded by a mixer (13), in particular a continuous rotary tubular mixer, for the slag.
EP19810902982 1980-10-27 1981-10-27 Process for the production of slag elements and device for its implementation Expired EP0063150B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT5281/80 1980-10-27
AT0528180A AT379984B (en) 1980-10-27 1980-10-27 METHOD FOR PRODUCING MOLDED BODIES FROM SHELL SLAG AND DEVICE FOR IMPLEMENTING THE METHOD

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EP0063150A1 EP0063150A1 (en) 1982-10-27
EP0063150B1 true EP0063150B1 (en) 1985-06-19

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AT382389B (en) * 1985-06-13 1987-02-25 Voest Alpine Ag METHOD AND PLANT FOR RECOVERY OF LODGE SLAG
AT516472A1 (en) * 2014-10-27 2016-05-15 Hulek Anton Apparatus for producing metallurgical pumice
CN107699646B (en) * 2017-11-16 2023-02-21 中冶沈勘秦皇岛工程设计研究总院有限公司 Stainless steel slag granulating device and method

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Publication number Priority date Publication date Assignee Title
US2067312A (en) * 1933-06-29 1937-01-12 William C Coryell Process of treating slag
US2067313A (en) * 1933-06-29 1937-01-12 William C Coryell Process of forming slag blocks
DE815922C (en) * 1949-03-24 1951-10-04 Karl Hermann Frhr V Gemmingen Process for continuous casting of castings from metallurgical slag
DE2113005A1 (en) * 1971-03-18 1972-11-09 Ernst Brinker Liquid boiler slag - immediate casting technique

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WO1982001505A1 (en) 1982-05-13
ATA528180A (en) 1985-08-15
EP0063150A1 (en) 1982-10-27
AT379984B (en) 1986-03-25

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