EP1664353B2 - Method and system for granulating slag - Google Patents

Method and system for granulating slag Download PDF

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Publication number
EP1664353B2
EP1664353B2 EP04765337A EP04765337A EP1664353B2 EP 1664353 B2 EP1664353 B2 EP 1664353B2 EP 04765337 A EP04765337 A EP 04765337A EP 04765337 A EP04765337 A EP 04765337A EP 1664353 B2 EP1664353 B2 EP 1664353B2
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Prior art keywords
water
slag
granulation
gases
condensation
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German (de)
French (fr)
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EP1664353A1 (en
EP1664353B1 (en
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Bogdan Vuletic
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SIEMENS VAI METALS Technologies GmbH
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Siemens VAI Metals Technologies GmbH Austria
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    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B3/00—General features in the manufacture of pig-iron
    • C21B3/04—Recovery of by-products, e.g. slag
    • C21B3/06—Treatment of liquid slag
    • C21B3/08—Cooling slag
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B2100/00—Handling of exhaust gases produced during the manufacture of iron or steel
    • C21B2100/40—Gas purification of exhaust gases to be recirculated or used in other metallurgical processes
    • C21B2100/42—Sulphur removal
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B2400/00—Treatment of slags originating from iron or steel processes
    • C21B2400/02—Physical or chemical treatment of slags
    • C21B2400/022—Methods of cooling or quenching molten slag
    • C21B2400/024—Methods of cooling or quenching molten slag with the direct use of steam or liquid coolants, e.g. water
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B2400/00—Treatment of slags originating from iron or steel processes
    • C21B2400/02—Physical or chemical treatment of slags
    • C21B2400/03—Removing sulfur
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B2400/00—Treatment of slags originating from iron or steel processes
    • C21B2400/02—Physical or chemical treatment of slags
    • C21B2400/032—Separating slag from liquid, e.g. from water, after quenching
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B2400/00—Treatment of slags originating from iron or steel processes
    • C21B2400/05—Apparatus features
    • C21B2400/062—Jet nozzles or pressurised fluids for cooling, fragmenting or atomising slag
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B2400/00—Treatment of slags originating from iron or steel processes
    • C21B2400/05—Apparatus features
    • C21B2400/066—Receptacle features where the slag is treated
    • C21B2400/072—Tanks to collect the slag, e.g. water tank
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B2400/00—Treatment of slags originating from iron or steel processes
    • C21B2400/05—Apparatus features
    • C21B2400/066—Receptacle features where the slag is treated
    • C21B2400/074—Tower structures for cooling, being confined but not sealed

Definitions

  • the invention relates to a method for granulating slag, in particular from a blast furnace and / or a smelting reduction plant, wherein a granulate-water mixture formed during granulation is fed to a granulation vessel and then to a dewatering plant in which the slag granules are dehydrated, and wherein the Granulating resulting H 2 S-containing vapors and gases are at least partially condensed in a congruent with the Grenulier disposer condensing space by injecting water.
  • the air introduced into the system leads in other plant areas according to DE 35 11 958 C to a slight overpressure and passes through Granulatabsch- and other openings as well as over covers in the atmosphere. With the air, however, the harmful gases in concentrations that are above the permitted limits escape uncontrolled into the atmosphere.
  • an overpressure is set in the granulating container and in the condenser space below the water injection. This is done by setting the water injection.
  • the overpressure has the positive effect that the H 2 S-containing residual gases without forced delivery devices, such as fans and the like., Are passed to the downstream combustion point, ie slag trough.
  • the amount of air introduced into the granulator reduces the amount of air and H 2 S cargo discharged from the system.
  • the sulfur-containing vapors and gases produced during granulation are precipitated in a condensing tower 10 arranged above the granulation container 4.
  • a device 11 for water injection is arranged, which is supplied via a fed from the collecting tank 23 water supply 12 with calcium oxide-containing water.
  • a means 13 for collecting water and condensate e.g. formed by water gutters, arranged, which upper a discharge line 14 is connected to the water basin 7c.

Abstract

In a process for granulating slag, from a blast furnace or a smelting reduction plant, in which a granule/water mixture formed during the granulation is fed to a granulation tank and then to a dewatering installation, in which the slag granules are dewatered. H2S-containing vapors and gases formed during the granulation are at least partially condensed by injection of water in a condensation space which is flow-connected to the granulation tank. H2S-containing residual gases are discharged from the compensation space below the water injection point, H2S is burnt.

Description

Die Erfindung betrifft ein Verfahren zum Granulieren von Schlacke, insbesondere aus einem Hochofen und/oder einer Schmelzreduktionsanlage, wobei ein beim Granulieren entstehendes Granulat-Wasser-Gemisch einem Granulierbehälter und danach einer Entwässerungsanlage zugeführt wird, in der das Schlackengranulat entwässert wird, und wobei die beim Granulieren entstehenden H2S enthaltenden Dämpfe und Gase in einem mit dem Grenulierbehälter strömungsmäßig in Verbindung stehenden Kondensierraum durch Eindüsen von Wasser zumindest teilweise kondensiert werden.The invention relates to a method for granulating slag, in particular from a blast furnace and / or a smelting reduction plant, wherein a granulate-water mixture formed during granulation is fed to a granulation vessel and then to a dewatering plant in which the slag granules are dehydrated, and wherein the Granulating resulting H 2 S-containing vapors and gases are at least partially condensed in a congruent with the Grenulierbehälter condensing space by injecting water.

Im Allgemeinen wird die aus einem Hochofen oder einer Schmelzreduktionsanlage stammende heiße Schlacke in Granulat umgewandelt, wie z.B. durch rasches Abkühlen und Zerschlagen mit Wasser. Nach dem Granulieren fließt das Granulat-Wasser-Gemisch über einen Granulierbehälter oder über einen Kanal zu einer Entwässerungsanlage. In dieser wird der Schlackensand auf ca. 12 % entwässert und danach als Fertigprodukt verkauft.In general, the hot slag originating from a blast furnace or smelting plant is converted into granules, such as e.g. by rapid cooling and crushing with water. After granulation, the granulate-water mixture flows through a granulation tank or via a channel to a dewatering plant. In this, the slag sand is dewatered to about 12% and then sold as a finished product.

Der im Zuge des Granulierungsprozesses erzeugte Dampf und die schwefelhaltigen Gase, H2S und kleine Mengen an SO2, werden meist über einen hohen Kamin in die Atmosphäre geleitet oder in einem Kondensierturm, der oberhalb des Granulierbehälters angeordnet ist, niedergeschlagen.The steam generated in the course of the granulation process and the sulfur-containing gases, H 2 S and small amounts of SO 2 , are usually passed into the atmosphere via a high chimney or precipitated in a condenser tower which is arranged above the granulation vessel.

Im " Fachbericht Hüttenpraxis Metallweiterverarbeitung" (Bd. 20, Nr. 10, 1982, S. 744-746 ) ist ein Verfahren zur Erzeugung von Schlackangranulat beschrieben, bei dem in den Kamin ein Dampfkondensator eingebaut werden kann, der ein Kondensieren der Dämpfe einschließlich eines großen Tells kondenslerbarer Schadstoffe ermöglicht.In the " Fachbericht Hüttenpraxis Metallweiterverarbeitung "(Vol. 20, No. 10, 1982, pp. 744-746 ) describes a process for the production of slag granulate, in which a steam condenser can be installed in the chimney, which makes it possible to condense the vapors including a large amount of condensable pollutants.

Ein Verfahren der eingangs beschriebenen Art ist aus der DE 35 11 958 C bekannt. Hierbei werden die Gasströme, bestehend aus einem Wasserdampf-Abdampf-Gemisch, wobei unter Abdampf Luft und Schadstoffe wie H2S und S02 zu verstehen sind, in einem geschlossenen Kreislauf geführt und mit kalziumoxidhaltigem Wasser in einem Kondensierturm niedergeschlagen.A method of the type described above is known from DE 35 11 958 C known. In this case, the gas streams, consisting of a steam-exhaust steam mixture, which are to be understood by Abdampf air and pollutants such as H 2 S and S0 2 , conducted in a closed circuit and precipitated with calcium oxide-containing water in a condenser tower.

Nachteilig hierbei ist Jedoch, dass H2S und SO2 nur bis zu bestimmten Restkonzentrationen mit Wasser niedergeschlagen werden.The disadvantage here, however, is that H 2 S and SO 2 are only precipitated with water up to certain residual concentrations.

Die angesaugte oder auf andere Weise in das System eingebrachte Menge an Luft sowie die produzierten H2S-Mengen schwanken sehr stark im Laufe eines Abstichs und von Abstich zu Abstich in Abhängigkeit von Schlackenrate, Schlackenanalyse, Wasserkreislaufmenge, Wassertemperatur, Windgeschwindigkeit, Windrichtung, Form und Ausführung des Granulierrohres und anderen Faktoren. Die in das System eingebrachte Luft führt in anderen Anlagenbereichen gemäß DE 35 11 958 C zu einem leichten Überdruck und gelangt über Granulatabwurf- und andere Öffnungen sowie über Abdeckhauben in die Atmosphäre. Mit der Luft entweichen aber auch die schädlichen Gase in Konzentrationen, die über den erlaubten Grenzen liegen, unkontrolliert in die Atmosphäre.The amount of air sucked or otherwise introduced into the system, as well as the quantities of H 2 S produced, vary greatly during tapping and tapping Tapping depending on slag rate, slag analysis, water cycle volume, water temperature, wind speed, wind direction, shape and design of the granulation tube and other factors. The air introduced into the system leads in other plant areas according to DE 35 11 958 C to a slight overpressure and passes through Granulatabwurf- and other openings as well as over covers in the atmosphere. With the air, however, the harmful gases in concentrations that are above the permitted limits escape uncontrolled into the atmosphere.

Nach einem weiteren, in der US 5,540,895 A beschriebenen Verfahren werden die schwefelhaltigen Abgase in einer eigenen Vorrichtung im Kondensierturm einer chemischen Gaswäsche mittels Eindüsung einer alkalischen wässrigen Lösung unterzogen, bevor sie in die Atmosphäre geleitet werden. Hierzu sind jedoch eine zusätzliche chemische Anlage und ein dadurch bedingter Chemikalienverbrauch notwendig.After another, in the US 5,540,895 A The sulfur-containing exhaust gases are subjected in a separate device in the condenser tower of a chemical gas scrubbing by means of injection of an alkaline aqueous solution before they are discharged into the atmosphere. For this purpose, however, an additional chemical system and a consequent chemical consumption are necessary.

Die Erfindung bezweckt die Vermeidung der oben genannten Probleme und Nachteile und stellt sich die Aufgabe, ein Verfahren und eine Anlage zum Granulieren von Schlacke bereitzustellen, bei welchen der H2S-Gehalt der bei der Granulierung entstehenden Gase und Dämpfe ohne komplizierte Einbauten in eine bestehende Anlage und ohne zusätzlichen Chemikalienverbrauch zuverlässig beseitigt oder zumindest unter die zulässige Grenzkonzentration gesenkt wird. Ferner soll ein Entweichen von H2S-haltigen Gasen aus anderen Öffnungen und undichten Stellen der Anlage vermieden und die Menge der in das System eingebrachten Luft minimiert werden.The invention aims to avoid the above-mentioned problems and disadvantages and has as its object to provide a method and a plant for granulating slag, in which the H 2 S content of the resulting during the granulation gases and vapors without complicated installations in an existing Reliable system eliminated without additional chemical consumption or at least reduced below the permissible limit concentration. Furthermore, the escape of H 2 S-containing gases from other openings and leaks in the system should be avoided and the amount of air introduced into the system should be minimized.

Diese Aufgabe wird bei einem Verfahren zum Granulieren von Schlacke gemäß der eingangs genannten Art erfindungsgemäß dadurch gelöst, dass H2S enthaltende Restgase unterhalb der Wassereindüsung aus dem Kondensierraum abgeleitet werden und H2S verbrannt wird.This object is achieved in a method for granulating slag according to the aforementioned type according to the invention in that H 2 S containing residual gases are derived below the water injection from the Kondensierraum and H 2 S is burned.

Bei der Verbrennung von H2S bildet sich das weniger schädliche SO2, welches einen höheren Grenzwert besitzt (Grenzwert H2S: 3 ppm; Grenzwert S02: 350 ppm) und zudem leicht auswaschbar ist.In the combustion of H 2 S, the less harmful SO 2 forms , which has a higher limit (limit H 2 S: 3 ppm, limit S0 2 : 350 ppm) and is also easy to wash out.

Um auch den Gahalt an S02 in den in die Atmosphäre abgegebenen Abgasen vorteilhaft zu verringern, wird das Verbrennungsabgas mit Wasser gekühlt und das aus H2S entstandene S02 niedergeschlagen.In order to reduce the Gahalt to S0 2 in the exhaust gases released into the atmosphere advantageous, the combustion exhaust gas is cooled with water and deposited from H 2 S S0 2 deposited.

Eine weitere bevorzugte Variante ist dadurch gekennzeichnet, dass die Restgase nach der Ableitung aus dem Kondensierraum im Gegenstrom zur heißen Schlacke geführt und hierbei H2S zu S02 verbrannt wird, gegebenenfalls unter Wärmezufuhr mittels einer Stützflamme.A further preferred variant is characterized in that the residual gases are led after discharge from the Kondensierraum in countercurrent to the hot slag and this H 2 S is burned to S0 2 , optionally with heat supply by means of a support flame.

Vorzugsweise wird der Granulierbehälter gegenüber der Entwässerungsanlage gasdicht abgeschottet. Hierdurch wird ein Entweichen der im Wesentlichen während des Granuliervorgangs gebildeten schwefelhaltigen Gase und Dämpfe in die Entwässerungsanlage verhindert, so dass ein Großteil dieser Gase und Dämpfe durch das eingedüste Wasser im Kondensierraum niedergeschlagen wird.Preferably, the granulating container is sealed gas-tight with respect to the drainage system. As a result, escape of the sulfur-containing gases and vapors formed substantially during the granulation process is prevented in the dewatering system, so that a large part of these gases and vapors is deposited by the injected water in the condenser.

Weiters bevorzugt ist, dass im Granulierbehälter und im Kondensierraum unterhalb der Wassereindüsung ein Überdruck eingestellt wird. Dies wird über die Einstellung der Wassereindüsung bewerkstelligt. Der Überdruck hat den positiven Effekt, dass die H2S enthaltende Restgase ohne Zwangsfördereinrichtungen, wie Ventilatoren und dgl., zur nachgeschalteten Verbrennungsstelle, d.h. Schlackenrinne, geleitet werden. Außerdem wird die Ober die Granuliervorrichtung eingebrachte Luftmenge verringert und somit auch die Luftmenge und die H2S-Fracht, die aus dem System abgeführt werden.It is further preferred that an overpressure is set in the granulating container and in the condenser space below the water injection. This is done by setting the water injection. The overpressure has the positive effect that the H 2 S-containing residual gases without forced delivery devices, such as fans and the like., Are passed to the downstream combustion point, ie slag trough. In addition, the amount of air introduced into the granulator reduces the amount of air and H 2 S cargo discharged from the system.

Gemäß einer anderen bevorzugten Ausführungsform werden in der Entwässerungsanlage entstehende Dämpfe und Gase in den Kondensierraum oberhalb der Wassereindüsung geleitet. Diese zum Teil ebenfalls schwefelhaltigen Dämpfe und Gase können im . Kondensierraum niedergeschlagen bzw. als H2S enthaltende Restgase einer Verbrennung zugeführt werden.According to another preferred embodiment, vapors and gases produced in the dewatering plant are passed into the condensation space above the water injection. These partly also sulphurous vapors and gases can in the. Condensation condensed or deposited as H 2 S containing residual gases combustion.

Vorzugsweise wird im Kondensierturm oberhalb der Wassereindüsung ein Unterdruck eingestellt.Preferably, a negative pressure is set in the condensing tower above the water injection.

Bei Vorliegen einer Gassperre bildet sich z.B. in den dem Granullerbehälter nachgeschalteten Anlageteilen durch eine Gasverbindungsleitung mit dem Kondensierraum Ober der Wassereindüsung ein Unterdruck aus, der bewirkt, dass keine Dämpfe und Gase unkontrolliert aus Öffnungen und undichten Stellen austreten können, sondern diese Dämpfe und Gase in den Kondensierraum abgesaugt werden.In the presence of a gas barrier forms eg in the granule tank downstream equipment parts by a gas connection line with the condenser above the water injection from a negative pressure, which causes no vapors and gases uncontrollably escape from openings and leaks, but these vapors and gases in the Be condensed condensing.

Die mittels einer Saugwirkung in den Kondensierraum geleitete Dampf- und Gasmenge wird vorzugsweise Ober die Menge an eingedüstem Wasser geregelt und auf einem Minimum gehalten. Dadurch wird die mit der Luft ausgetragene H2S-Menge sowie der Energieverbrauch der Anlage minimiert.The guided by a suction effect in the Kondensierraum steam and gas amount is preferably controlled by the amount of injected water and kept to a minimum. This minimizes the amount of H 2 S discharged with the air as well as the energy consumption of the system.

Eine weitere bevorzugte Erfindungsvariante ist dadurch gekennzeichnet, dass im Kondensierraum entstehendes Kondensat und eingedüstes Wasser aus dem Kondensierraum abgeleitet und dem in der Entwässerungsanlage abgeschiedenen Wasser zugeführt wird, welches zur Granulation und zur Wassereindüsung rückgeführt wird.A further preferred variant of the invention is characterized in that condensate formed in the condensing space and injected water are removed from the condensing space and supplied to the water separated in the dewatering plant, which is recycled for granulation and water injection.

Die Menge an eingedüstem Wasser wird zweckmäßig in Abhängigkeit von der Schlackenrate geregelt.The amount of injected water is appropriately regulated depending on the slag rate.

Die erfindungsgemäße Anlage zum Granulieren von Schlacke umfasst eine mit einer Absaughaube versehene Schlackenrinne zur Beförderung der heißen Schlacke zu einer Vorrichtung zum Granulleren, vorzugsweise einem Spritzkopf, einen danach angeordneten Granulierbehälter zur Aufnahme eines Granulat-Wasser-Gemisches, eine mit dem Granulierbehälter strömungsmäßig in Verbindung stehende Kondensiereinrichtung, vorzugsweise einen Kondensierturm, mit einer Wasserzuführung und einer Vorrichtung zur Wassereindüsung, und eine Granulat-Entwässerungsanlage. In der Kondensiereinrichtung unterhalb der Vorrichtung zur Wassereindüsung ist eine Ableitung für Dämpfe und Gase vorgesehen, die zwischen der Granuliervorrichtung und der Absaughaube in die Schlackenrinne mündet.The slag granulating plant according to the invention comprises a slag chute provided with a suction hood for conveying the slag to a device for granulate, preferably a spray head, a granulating container arranged thereafter for receiving a granulate-water mixture, one fluidically communicating with the granulating container Condenser, preferably a condensing tower, with a water supply and a device for water injection, and a granular dewatering plant. In the condenser below the device for water injection a discharge for vapors and gases is provided, which opens into the slag trough between the granulator and the suction hood.

Nach der Absaughaube der Schlackenrinne ist ein Wasserkühler für die Verbrennungsabgase vorgesehen. Dieser dient zur Kühlung der Verbrennungsabgase sowie zum Auswaschen bzw. Niederschlagen des durch die Verbrennung entstandenen S02.After the suction hood of the slag trough a water cooler for the combustion exhaust gases is provided. This serves to cool the combustion exhaust gases and to wash out or precipitate the resulting from the combustion S0 2 .

Vorzugsweise umfasst die Schlackenrinne einen Brenner zur Erzeugung einer Stützflamme, welcher in Abhängigkeit von der Schlackenrinnentemperatur zugeschaltet werden kann. Hierdurch kann die Schlackenrinne nach einem längeren Stillstand auf die für die Verbrennung von H2S erforderliche Temperatur aufgeheizt werden.Preferably, the slag trough comprises a burner for generating a support flame, which can be switched on depending on the slag trough temperature. As a result, the slag trough can be heated after a longer standstill to the required for the combustion of H 2 S temperature.

Eine bevorzugte Variante der erfindungsgemäße Anlage ist dadurch gekennzeichnet, dass die Granulat-Entwässerungsanlage mindestens eine Entwässerungsvorrichtung und ein Wasserbecken umfasst, welche mit einer Abdeckhaube versehen sind, und von der Abdeckhaube eine Ableitung für Dämpfe und Gase wegführt, die in der Kondensiereinrichtung oberhalb der Vorrichtung zur Wassereindüsung mündet.A preferred variant of the system according to the invention is characterized in that the granulate dewatering plant comprises at least one dewatering device and a water basin, which are provided with a cover, and leads away from the cover a derivative of vapors and gases in the condenser above the device for Water injection opens.

Zweckmäßig ist zwischen dem Granulierbehälter und der Granulat-Entwässerungsanlage eine Gassperre vorgesehen.Suitably, a gas barrier is provided between the granulation and the granular dewatering system.

Bevorzugt ist ferner, dass in der Kondensiereinrichtung unterhalb der Vorrichtung zur Wassereindüsung ein Mittel zum Auffangen von Wasser und Kondensat vorgesehen ist, von welchem eine Ableitung wegführt, die in die Granulat-Entwässerungseinrichtung, insbesondere das Wasserbecken, mündet.It is further preferred that a means for collecting water and condensate is provided in the condenser below the device for water injection, from which leads away a derivative, which opens into the granular dewatering device, in particular the water basin.

Die Granulat-Entwässerungsanlage, insbesondere das Wasserbecken, steht vorzugsweise leitungsmäßig mit der Wasserzuführung der Kondensiereinrichtung und/oder der Granuliervorrichtung in Verbindung.The granulate dewatering plant, in particular the water basin, is preferably in line with the water supply of the condensing device and / or the granulator in combination.

Die Erfindung wird nachfolgend anhand der Zeichnung näher erläutert, wobei die Figur eine schematische Darstellung einer erfindungsgemäßen Anlage veranschaulicht.The invention will be explained in more detail with reference to the drawing, wherein the figure illustrates a schematic representation of a system according to the invention.

Gemäß der Figur wird heiße Schlacke aus einem Hochofen und/oder einer Schmelzreduktionsanlage durch eine Schlackenrinne 1 in Pfeilrichtung zu einer Granuliervorrichtung 2, z.B. einem Spritzkopf, gefördert, wo sie durch Einspritzen von Wasser abgekühlt und zerschlagen wird. Das entstandene Granulat-Wassar-Gemisch gelangt über ein Granulierrohr 3 in einen Granulierbehälter 4 und von dort durch einen Kanal 5 in eine Granulat-Entwässerungsanlage, bestehend aus Entwässerungsvorrichtungen 6a und 6b, z.B. Förderschnecken, Trommelfilter, etc., und Wasserbecken 7a-7c. In der Entwässerungsanlage wird das Granulat entwässert und der Schlackensand auf Lagerplätzen 8a und 8b gelagert. Das in den Wasserbecken 7a-7c abgeschiedene Wasser wird nach Ersatz der Verluste und Abkühlung in einem Kühlturm 24 als Prozesswasser von dem Sammelbehälter 23 des Kühlturms 24 über eine Leitung 9 zur Granuliervorrichtung 2 zurückgeführt.According to the figure, hot slag from a blast furnace and / or a smelting reduction plant is conveyed through a slag channel 1 in the direction of the arrow to a granulating device 2, for example a spray head, where it is cooled and crushed by the injection of water. The resulting granulate-Wassar mixture passes through a granulating 3 in a granulating 4 and from there through a channel 5 in a granular dewatering system consisting of dewatering devices 6a and 6b, eg screw conveyors, drum filters, etc., and water basin 7a-7c. In the dewatering plant, the granules are dewatered and the slag sand in storage areas 8a and 8b stored. The water deposited in the water tanks 7a-7c is returned to the granulating device 2 via a line 9 after replacement of the losses and cooling in a cooling tower 24 as process water from the collecting tank 23 of the cooling tower 24.

Die beim Granulieren entstehenden schwefelhältigen Dämpfe und Gase werden in einem oberhalb des Granulierbehälters 4 angeordneten Kondensierturm 10 niedergeschlagen. Im oberen Teil des Kondensierturms 10 ist eine Vorrichtung 11 zur Wassereindüsung angeordnet, welche über eine vom Sammelbehälter 23 gespeiste Wasserzuführung 12 mit kalziumoxidhaltigem Wasser versorgt wird. Im unteren Teil des Kondensierturms 10, d.h. unterhalb der Vorrichtung 11 ist ein Mittel 13 zum Auffangen von Wasser und Kondensat, z.B. gebildet von Wasserfangrinnen, angeordnet, welches Ober eine Ableitung 14 mit dem Wasserbecken 7c verbunden ist.The sulfur-containing vapors and gases produced during granulation are precipitated in a condensing tower 10 arranged above the granulation container 4. In the upper part of the condensing tower 10, a device 11 for water injection is arranged, which is supplied via a fed from the collecting tank 23 water supply 12 with calcium oxide-containing water. In the lower part of the condensing tower 10, i. Below the device 11 is a means 13 for collecting water and condensate, e.g. formed by water gutters, arranged, which upper a discharge line 14 is connected to the water basin 7c.

Die nicht kondensierten bzw. niedergeschlagenen, H2S-haltigen Restgase und -dampfe werden unterhalb der Vorrichtung 11 und oberhalb des Mittels 13 über eine Ableitung 15 aus dem Kondensierturm 10 abgezogen.The non-condensed or precipitated, H 2 S-containing residual gases and vapor are removed below the device 11 and above the means 13 via a discharge line 15 from the condensing tower 10.

Die Ableitung 15 (strichliert dargestellt) mündet in der Schlackenrinne 1, und zwar zwischen der Granuliervorrichtung 2 und einer über der Schlackenrinne 1 vorgesehenen Absaughaube 18. Die Restgase werden in der Schlackenrinne 1 im Gegenstrom zur heißen Schlacke geführt und H2S hierbei zu SO2 verbrannt. Durch die Distanz zwischen der Einmündung der Ableitung 15 in die Schlackenrinne 1 und der Absaughaube 18 wird gewährleistet, dass sich die Restgase auf die für die Verbrennung von H2S erforderliche Temperatur erwärmen können und dass genug Zeit für die Verbrennung zur Verfügung steht. Für die Zufuhr zusätzlicher Wärme im Fall eines längeren Stillstands oder eines Absinkens der Schlackentemperatur ist in der Schlackenrinne 1 ein Brenner 19 zur Erzeugung einer Stützflamme vorgesehen. Die Verbrennungsabgase werden über die Absaughaube 18 abgeleitet und gegebenenfalls einem von der Wasserzuführung 12 gespeisten Wasserkühler (bzw. Wäscher) 17 zugeführt, gekühlt und das darin enthaltene S02 ausgewaschen bzw. niedergeschlagen oder einer Entstaubungsvorrichtung zugeführt. Das von H2S und S02 gereinigte Abgas wird danach in die Atmosphäre geleitet. Das Waschwasser wird in die Ableitung 14 eingespeistThe discharge line 15 (shown in phantom) opens into the slag channel 1, specifically between the granulating device 2 and a suction hood 18 provided above the slag channel 1. The residual gases are conducted in the slag channel 1 in countercurrent to the hot slag and H 2 S in this case to SO 2 burned. The distance between the junction of the discharge line 15 in the slag channel 1 and the suction hood 18 ensures that the residual gases can be heated to the required temperature for the combustion of H 2 S and that enough time is available for combustion. For the supply of additional heat in the case of a longer standstill or a decrease in the slag temperature, a burner 19 is provided in the slag channel 1 for generating a support flame. The combustion exhaust gases are discharged via the suction hood 18 and, if appropriate, fed to a water cooler (or scrubber) 17 fed by the water feed 12, cooled and the SO 2 contained therein washed or precipitated or one Dedusting device supplied. The purified from H 2 S and S0 2 exhaust gas is then passed into the atmosphere. The wash water is fed to the discharge line 14

Der Granulierbehälter 4 ist gegenüber dem Kanal 5 und in weiterer Folge gegenüber der Granulat-Entwässerungsanlage mit einer Gassperre 20 abgeschlossen, weiche nur dem Granulat-Wasser-Gemisch einen übertritt in den Kanal 5 und die Entwässerungsanlage gestattet, die Dämpfe und Gase jedoch im Granulierbehälter 4 und im Kondensierturm 10 zurückhält.The granulating 4 is compared to the channel 5 and subsequently completed with respect to the granular dewatering plant with a gas barrier 20, soft only the granulate-water mixture a passage into the channel 5 and the drainage system allows the vapors and gases in the granulation and retains in the condensing tower 10.

Durch die Eindüsung von Wasser über die Vorrichtung 11 wird im unteren Teil des Kondensierturms 10, d.h. unterhalb der Wassereindüsung, und im Granulierbehälter 4 ein Überdruck erzeugt. Aufgrund dieses Überdrucks werden die Restgase ohne Bedarf von Zwangsfördervorrichtungen über die Ableitung 15 zur Schlackenrinne 1 und durch diese hindurch gefördert.By the injection of water through the device 11, in the lower part of the condensing tower 10, i. below the water injection, and generates an overpressure in the granulation 4. Due to this overpressure, the residual gases are conveyed through the discharge line 15 to the slag trough 1 and through it without the need for forced delivery devices.

Die Entwässerungsvorrichtungen 6a, 6b mit den Wasserbecken 7a und 7b sowie das letzte Wasserbecken 7c sind mit Abdeckhauben 21a-21c versehen, von welchen eine Ableitung 21 für in der Entwässerungsanlage entstehende, gegebenenfalls schwefelhältige Dämpfe und Gase wegführt, die oberhalb der Vorrichtung 11 in den Kondensierturm 10 mündet. Auf diese Weise können schädliche Abgase, die nicht bereits im Granulierbehälter 4 entstehen und von dort in den Kondensierturm 10 steigen, ebenfalls der Reinigung und insbesondere der Verbrennung zugeführt werden.The drainage devices 6a, 6b with the water reservoirs 7a and 7b and the last water reservoir 7c are provided with cover hoods 21a-21c, from which a discharge line 21 for possibly resulting sulfur-containing vapors and gases in the dewatering system, which leads above the device 11 into the condensing tower 10 opens. In this way, harmful exhaust gases that do not already arise in the granulation 4 and rise from there into the condensing tower 10, also the cleaning and in particular the combustion are supplied.

Infolge der Wassereindüsung im Kondensierturm 10 und der Gassperre 20 entsteht in der Granulat-Entwässerungsanlage, d.h. im Kanal 5 und in den Anlageteilen unterhalb der Abdeckhauben 21a-21c ein Unterdruck, der für eine Absaugung der Dämpfe und Gase über die Ableitung 22 in den Kondensierturm 10 sorgt. Auf diese Weise wird verhindert, dass schädliche, H2S-haltige Gase unkontrolliert über Öffnungen bzw. undichte Stellen in der Granulat-Entwässerungsanlage in die Atmosphäre gelangen. Es ist dadurch beispielsweise sogar möglich, einen als Entwässerungsvorrichtung verwendeten Trommelfilter mittels Pressluft zu reinigen.As a result of the injection of water in the condensing tower 10 and the gas barrier 20 is formed in the granular dewatering system, ie in the channel 5 and in the system components below the covers 21a-21c, a negative pressure for a suction of vapors and gases through the discharge line 22 in the condenser 10th provides. In this way it is prevented that harmful, H 2 S-containing gases escape uncontrollably through openings or leaks in the granular dewatering plant into the atmosphere. For example, it is even possible to clean a drum filter used as a dewatering device by means of compressed air.

Vorteilhafterweise sind in der Ableitung 22 und der Wasserzuführung 12 Meß- bzw. Regelvorrichtungen (nicht dargestellt) vorgesehen, so dass die aus der Entwässerungsanlage abgesaugte Dampf- und Gasmenge über die Menge an in den Kondensierturm 10 eingedüstem Wasser geregelt und auf einem Minimum gehalten werden kann. Gleichsam sind Messinstrumente zur Bestimmung der Schlackenrate vorgesehen, um die eingedüste Wassermenge auch Abhängigkeit dieser regeln zu können.Advantageously, in the discharge line 22 and the water supply 12 measuring or control devices (not shown) are provided so that the extracted from the dewatering system steam and gas quantity can be controlled by the amount of water injected into the condenser 10 and kept to a minimum , as it were Measuring instruments for determining the slag rate are provided in order to be able to regulate the amount of injected water also depending on this.

Claims (15)

  1. Process for granulating slag, in particular from a blast furnace and/or a smelting reduction plant, in which a granule/water mixture formed during the granulation is fed to a granulation tank (4) and then to a dewatering installation, in which the slag granules are dewatered, the H2S-containing vapors and gases formed during the granulation being at least partially condensed by injection of water in a condensation space which is flow-connected to the granulation tank (4), wherein H2S-containing residual gases are discharged from the condensation space via a discharge line (15) below the water injection point, and H2S is burnt, characterized in that the residual gases, between the granulation device (2) and an extractor hood (18) provided above the slag channel (1), are introduced into the slag channel (1) and guided in countercurrent to the hot slag, wherein as a result of the distance between the point at which the discharge line (15) opens into the slag channel (1) and the extractor hood (18) the residual gases are heated to the temperature required to burn H2S, if appropriate with heat being supplied by means of an ancillary flame, and sufficient time is available for the burning, with the result that in the process H2S is burnt to form SO2, with the combustion flue gases being discharged via the extractor hood (18) and if appropriate being fed to a water cooler or a dedusting device.
  2. Process according to Claim 1, characterized in that the combustion flue gas is cooled with water, and the SO2 formed from H2S is precipitated.
  3. Process according to one of Claims 1 or 2, characterized in that the granulation tank (4) is partitioned off in a gastight manner from the dewatering installation.
  4. Process according to one of Claims 1 to 3, characterized in that a superatmospheric pressure is set in the granulation tank (4) and in the condensation space below the water injection point.
  5. Process according to one of Claims 1 to 4, characterized in that vapors and gases formed in the dewatering installation are passed into the condensation space above the water injection point.
  6. Process according to Claim 5, characterized in that a subatmospheric pressure is set in the condensation space above the water injection point.
  7. Process according to Claim 5 or 6, characterized in that the quantity of vapor and gas passed into the condensation space by means of a sucking action is controlled by means of the quantity of water injected and is kept at a minimum.
  8. Process according to one of Claims 1 to 7, characterized in that condensate formed in the condensation space and injected water are discharged from the condensation space and fed to the water which has been separated off in the dewatering installation and is recirculated for granulation and water injection.
  9. Process according to one of Claims 1 to 8, characterized in that the quantity of injected water is controlled as a function of the slag rate.
  10. Installation for granulating slag, in particular from a blast furnace and/or a smelting reduction plant, comprising a slag channel (1), which is provided with an extractor hood (18), for delivering the hot slag to a granulation device (2), preferably a spray head, a downstream granulation tank (4) for holding a granule/water mixture, a condensation device (10), preferably a condensation tower, which is flow-connected to the granulation tank (4) and has a water feed (12) and a device (11) for injecting water, and a granule dewatering installation, characterized in that a discharge line (15) for discharging vapors and gases, which opens out into the slag channel (1) between the granulation device (2) and the extractor hood (18), is provided in the condensation device (10) below the device (11) for injecting water, in that the vapors and gases can be guided in countercurrent to the hot slag, wherein as a result of the distance between the point at which the discharge line (15) opens into the slag channel (1) and the extractor hood (18) the vapors and gases are heated to the temperature required to burn H2S and sufficient time is available for the burning, with the result that in the process H2S is burnt to form SO2, wherein a water cooler (17) or a dedusting device for discharging the combustion flue gases from the extractor hood (18) into the water cooler (17) or into the dedusting device is provided.
  11. Installation according to Claim 10, characterized in that the slag channel (1) comprises a burner (19) for generating an ancillary flame.
  12. Installation according to one of Claims 10 or 11, characterized in that the granule dewatering installation comprises at least one dewatering device (6a, 6b) and a water basin (7a, 7b, 7c), which are provided with a covering hood (21a, 21b, 21c), and a discharge line (22) for discharging vapors and gases, which opens out in the condensation device (10) above the device (11) for injecting water, leads away from the covering hood (21a, 21b, 21c).
  13. Installation according to one of Claims 10 to 12, characterized in that a gas barrier (20) is provided between the granulation tank (4) and the granule dewatering installation.
  14. Installation according to one of Claims 10 to 13, characterized in that a means (13) for trapping water and condensate is provided in the condensation device (10) below the device (11) for the injection of water, from which means (13) leads a discharge line (14) which opens out into the granule dewatering device, in particular the water basin (7c).
  15. Installation according to one of Claims 10 to 14, characterized in that the granule dewatering installation, in particular the water basin (7c), is pipe-connected to the water feed (12) of the condensation device (10) and/or the granulation device (2).
EP04765337A 2003-09-25 2004-09-17 Method and system for granulating slag Not-in-force EP1664353B2 (en)

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AT0152503A AT412650B (en) 2003-09-25 2003-09-25 METHOD AND APPARATUS FOR GRANULATING SLAG
PCT/EP2004/010442 WO2005031008A1 (en) 2003-09-25 2004-09-17 Method and system for granulating slag

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Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BRPI0616607A2 (en) 2005-09-30 2013-02-19 Tata Steel Ltd Methods for producing hydrogen and / or other gases from waste and waste heat from a steel plant and for producing a stream of hydrogen and / or carbon monoxide and other gases
BRPI0612895B1 (en) 2006-04-28 2020-12-22 Tata Steel Limited method to produce hydrogen gas from water
KR100709061B1 (en) * 2006-09-29 2007-04-18 주식회사 티아이엔지니어링건축사사무소 Safe sliding storm door and a sliding paper door structure for buildings
JP5303977B2 (en) * 2008-03-20 2013-10-02 Ｊｆｅスチール株式会社 Slag processing method
LU91626B1 (en) 2009-12-03 2011-06-06 Wurth Paul Sa Installation and method for processing molten material produced by a metallurgical plant, in particular for processing blast furnace slag
LU91765B1 (en) * 2010-12-14 2012-06-15 Wurth Paul Sa Steam condensation tower for a granulation installation
CN103060494B (en) * 2013-01-09 2016-01-27 北京世纪源博科技股份有限公司 A kind of vapor recovery type blast furnace slag flushing water system
CN103060498B (en) * 2013-01-09 2015-03-11 北京世纪源博科技股份有限公司 Blast furnace cinder flushing water residual heat power generation system
CN103555870B (en) * 2013-10-30 2015-07-01 江苏沙钢集团有限公司 High-temperature slag water-quenching condensation technology and high-temperature slag water-quenching condensation system free of cooling tower
EP3194063A1 (en) * 2014-09-21 2017-07-26 Hatch Ltd. Gas atomization of molten materials using by-product off-gases
CN108707709B (en) * 2018-08-21 2023-07-25 北京京诚科林环保科技有限公司 Positive pressure granulating device and positive pressure granulating method for blast furnace water slag granulating tower
CN109529560A (en) * 2018-12-27 2019-03-29 中冶京诚工程技术有限公司 A kind of blast furnace grain slag system filtering ponds steam disappears white method

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4402492A (en) † 1982-06-16 1983-09-06 United States Steel Corporation Burner apparatus for molten metal fume suppression
US4475720A (en) † 1983-03-14 1984-10-09 Broom Gilbert R Casthouse emission control system
LU88441A1 (en) † 1993-12-16 1995-07-10 Wurth Paul Sa Process for the treatment of a mixture of water vapors and air polluted by sulfur gases

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3738820A (en) * 1970-06-01 1973-06-12 Kinney S Eng Inc Method of and apparatus for the processing of molten slag
DE2253806C3 (en) * 1972-11-03 1978-06-15 Metallgesellschaft Ag, 6000 Frankfurt Process for converting the hydrogen sulfide contained in gas mixtures with sulfur dioxide according to the Claus process
US3912487A (en) * 1974-06-24 1975-10-14 Mikhail Alexeevich Sharanov Apparatus for producing granulated slag
DE3511958A1 (en) * 1985-04-02 1986-10-16 AJO-Stahlbau GmbH & Co KG, 5905 Freudenberg METHOD AND DEVICE FOR PRODUCING SLAG SAND (GRANULATE) FROM BLAST FURNACE SLAG
CN1009207B (en) * 1986-04-21 1990-08-15 Ajo钢铁制造有限公司 Process and apparatus for manufacturing slag sand (granular solids) with blast furnace slag
US5082483A (en) * 1990-06-08 1992-01-21 National Slag Limited Enclosures for slag pelletization apparatus and method of operation thereof
ATE134698T1 (en) * 1991-11-29 1996-03-15 Noell En Und Entsorgungstechni METHOD FOR THE THERMAL RECYCLING OF WASTE MATERIALS
US5441205A (en) * 1993-06-30 1995-08-15 Mitsubishi Materials Corporation Apparatus for water-granulating slag
US5540895A (en) * 1994-06-03 1996-07-30 Paul Wurth S.A. Device for the treatment of mixture of steam and air contaminated with sulphurous gases, formed during the granulation and dehydration of blast furnace slag
LU88543A1 (en) 1994-10-06 1996-04-29 Wurth Paul Sa Process for wet granulation of slag
JP2868432B2 (en) * 1995-03-08 1999-03-10 ラサ商事株式会社 Hazardous gas treatment method and treatment equipment in blast furnace slag granulation system
GB9719512D0 (en) * 1997-09-12 1997-11-19 Boc Group Plc Treatment of a combustible gas stream
JP3947892B2 (en) * 1999-06-29 2007-07-25 バブコック日立株式会社 Sulfur content recovery method and gasification plant to which the sulfur content recovery method is applied
CN1140636C (en) * 2000-04-07 2004-03-03 张维田 Granulating and vapour-condensing equipment for recovering slags
DE10152672C2 (en) 2001-10-05 2003-11-13 Voest Alpine Ind Anlagen Schlackengranulierungsanlage
AU2003236057A1 (en) * 2002-04-12 2003-10-27 Ebara Corporation Fusion furnace, gasification fusion furnace, and method of processing waste

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4402492A (en) † 1982-06-16 1983-09-06 United States Steel Corporation Burner apparatus for molten metal fume suppression
US4475720A (en) † 1983-03-14 1984-10-09 Broom Gilbert R Casthouse emission control system
LU88441A1 (en) † 1993-12-16 1995-07-10 Wurth Paul Sa Process for the treatment of a mixture of water vapors and air polluted by sulfur gases

Non-Patent Citations (7)

* Cited by examiner, † Cited by third party
Title
"Air pollution engineering manual", METALLUUGICAL INDUSTRY, 2000 - 2000, pages 565 - 573 †
K-H. GROSSPIETSCH ET AL.: "Neue Schlackengranulationsanlage verbessert", STAHL UND EISEN, no. 8, 15 August 2003 (2003-08-15) - 15 August 2003 (2003-08-15), pages 61 - 67 †
KLAUS GÖRNER, KURT HÜBNER: "Gasreinung und Luftreinhaltung", 2002, SPRINGER-VERLAG, ISBN: 3-540-42006-1, pages: F61 - F65 †
PAUL N. CHEREMISINOFF: "Air Pollution Control and Design for Industry", 1993, MARCEL DEKKER, INC, USA, ISBN: 0-8247-9057-X, pages: 235 - 252 †
R. MAHR: "From laphole zone to casthouse arrangement", MODERN BLAST FURNACE DESIGN, August 1978 (1978-08-01) - August 1978 (1978-08-01) †
ROBERT NOYES: "Pollution prevention technology handbook", 1993, NOYES PUBLICATION, USA, ISBN: 0-8155-1311-9, pages: 177 - 181 †
W. FRITZ ET AL.: "Reinigung von Abgasen", 1990, VOGEL BUCHVERLAG, ISBN: 3-8023-0244-3, pages: 23-24 - 180-193 †

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BRPI0414805A (en) 2006-11-14
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DE502004002708D1 (en) 2007-03-08
WO2005031008A1 (en) 2005-04-07
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US20070107466A1 (en) 2007-05-17
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US7600397B2 (en) 2009-10-13
KR101186277B1 (en) 2012-09-27
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EP1664353B1 (en) 2007-01-17
US20090315233A1 (en) 2009-12-24
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CA2539601A1 (en) 2005-04-07
CN1856583A (en) 2006-11-01

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