WO2001090423A1 - Method for conveying away slags, especially desulfurization slags - Google Patents
Method for conveying away slags, especially desulfurization slags Download PDFInfo
- Publication number
- WO2001090423A1 WO2001090423A1 PCT/DE2001/001991 DE0101991W WO0190423A1 WO 2001090423 A1 WO2001090423 A1 WO 2001090423A1 DE 0101991 W DE0101991 W DE 0101991W WO 0190423 A1 WO0190423 A1 WO 0190423A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- slag
- container
- containers
- cooled
- slags
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
Classifications
-
- 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
- C21B2400/05—Apparatus features
- C21B2400/06—Conveyors on which slag is cooled
Definitions
- the invention relates to a method for the removal of slags, in particular desulphurization slags, which form on pig iron or steel slags.
- the slag that forms on the surface of the hot metal melt is drawn off into large slag pails or slag boxes by means of a slag scraper.
- the slag buckets are cooled for several days and then soaked for at least 2-3 days.
- the slag is cooled down using the cooling medium water so that emissions or deflagrations do not occur when it is dumped.
- the temperature of the cooled down slag should be less than 400 ° C to avoid odor nuisance caused by the formation of H 2 S gas.
- a disadvantage of the known method is the long waiting time until the slag cools down and the provision of a large number of slag buckets in circulation, including the transport logistics required for this.
- the object of the invention is to provide a method for the removal of slags which form on pig iron or steel melts, in particular desulfurization slag, which does not show the disadvantages described.
- the amount of slag withdrawn is subdivided into partial amounts, the amount of partial slag withdrawn in each case being assigned only to a container which moves past the deslagging point in time. Then the filled slag quantity continuously cooled along a specified distance and then thrown away.
- the proposed method has the advantage that the removal of the slag that has been drawn off is carried out in timed portions and that this amount can be cooled in a much shorter time.
- a so-called trough conveyor consisting of a multiplicity of containers or troughs of identical design, which are arranged all around.
- the containers which can be attached to one another can form an endless train, the containers being provided with wheels which roll on a closed rail belt.
- the containers are arranged on a separate circulating endless belt.
- they are detachably attached to the endless belt. With each stroke of the slag scraping, the endless belt or the container train sets a fixed one
- the endless belt or the container train After filling, the endless belt or the container train passes through a cooling section and, after the cooled slag has been discharged, conveys the empty containers back to the filling area. This eliminates the complex transport logistics of many slag buckets in circulation.
- Solid part fills up. This solid is preferably ground, cold slag.
- each container When the containers are arranged on the endless belt, spaces are formed between the successive containers. So that no hot slag can drip into these spaces, each container has a cover plate covering this space.
- Figure 1 as a schematic diagram of a trough conveyor designed according to the invention
- FIG. 1 shows a schematic diagram of a trough conveyor 1 designed according to the invention. It consists of a revolving endless belt 2, only indicated symbolically here, to which a plurality of containers 3 of the same design are fastened. The circulation direction 4 of the endless belt 2 is marked with an arrow.
- the method carried out with this trough conveyor 1 for removing removed slags proceeds as described below. From a pan, not shown here, by means of a scraper scraper, also not shown here, intermittently, i. H. a certain amount of slag 5 is drawn off in time with the stroke of the scraper. This falls into a collecting funnel 6, which is arranged above the endless belt 2 and from there directed into a container 3 underneath.
- a filling station is connected upstream of this filling station.
- This has a feed hopper 7, through which the previously empty container 3 is given a predetermined amount of granular solid 8.
- the granular solid 8 is cold slag ground.
- the respective container 3 is partially filled. This pre-filling prevents the residual portion of pig iron or steel present in the slag 5 from adhering to the wall of the container 3.
- the containers 3 pass through a cooling section, here in the form of a cooling tunnel 9.
- a cooling tunnel 9 seen in the transport direction 4 of the endless belt 2, a plurality of nozzles 10 are arranged, from which a cooling medium 12, preferably water, sprays, the jet spraying onto the passing filled containers 3 is directed.
- the arrangement of a cooling tunnel 9 has the advantage that the vapors which are unavoidable during spraying can be sucked off in a controlled manner.
- a suction device 13 which is only indicated here, is installed on the cooling tunnel 9. Since each container 3 has only a relatively small amount of slag 5, it is ensured that the cooling section is sufficient to cool down the amount of slag 5 introduced in coordination with the average transport speed of the endless belt 2.
- the endless belt 2 At the reversal point of the endless belt 2 come the
- Container 3 in the tilted position, so that the total contents, ie pre-fill quantity + slag quantity 5, can be dumped out.
- a trough 11 arranged at this point forms the collecting point. From there, the slag that has already cooled can be removed and used for further use. A part of it can be ground and returned to the feed device 7 as a pre-filler. So that no hot slag 5 can drip into the spaces between the successive containers 3, each container 3 has a cover plate 14.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Furnace Details (AREA)
Abstract
Description
Verfahren zum Abtransport von Schlacken, insbesondere EntschwefelungsschlackeProcess for the removal of slags, in particular desulphurization slag
Beschreibungdescription
Die Erfindung betrifft ein Verfahren zum Abtransport von auf Roheisen -oder Stahlschlacken sich bildenden Schlacken, insbesondere Entschwefelungsschlacke gemäß dem Oberbegriff des Anspruchs 1.The invention relates to a method for the removal of slags, in particular desulphurization slags, which form on pig iron or steel slags.
Die beispielsweise bei der Roheisenentschwefelung auf der Oberfläche der Roheisenschmelze sich bildende Schlacke wird mittels eines Schlackenabkratzers in große Schlackenkübel oder Schlackenkästen abgezogen. Nach dem Abschlacken werden die Schlackenkübel mehrere Tage abgekühlt und anschließend für mindestens 2-3 Tage gewässert. Mittels des Kühlmediums Wasser werden die Schlacken heruntergekühlt, damit es beim Auskippen nicht zu Emissionen oder Verpuffungen kommt. Zur Vermeidung von Geruchsbelästigungen durch sich bildendes H2S-Gas soll die Temperatur der heruntergekühlten Schlacke kleiner 400°C betragen. Nachteilig bei dem bekannten Verfahren ist die notwendig lange Wartezeit bis zum Abkühlen der Schlacke und das Vorhalten einer Vielzahl im Umlauf sich befindender Schlackenkübel einschließlich der dazu notwendigen Transportlogistik.The slag that forms on the surface of the hot metal melt, for example during hot metal desulfurization, is drawn off into large slag pails or slag boxes by means of a slag scraper. After slagging, the slag buckets are cooled for several days and then soaked for at least 2-3 days. The slag is cooled down using the cooling medium water so that emissions or deflagrations do not occur when it is dumped. The temperature of the cooled down slag should be less than 400 ° C to avoid odor nuisance caused by the formation of H 2 S gas. A disadvantage of the known method is the long waiting time until the slag cools down and the provision of a large number of slag buckets in circulation, including the transport logistics required for this.
Aufgabe der Erfindung ist es, ein Verfahren zum Abtransport von auf Roheisen- oder Stahlschmelzen sich bildenden Schlacken, insbesondere Entschwefelungsschlacke anzugeben, dass die geschilderten Nachteile nicht aufzeigt.The object of the invention is to provide a method for the removal of slags which form on pig iron or steel melts, in particular desulfurization slag, which does not show the disadvantages described.
Diese Aufgabe wird ausgehend vom Oberbegriff in Verbindung mit den kennzeichnenden Merkmalen des Anspruches 1 gelöst. Vorteilhafte Weiterbildungen sowie eine Vorrichtung zur Durchführung des Verfahrens sind jeweils Gegenstand von Unteransprüchen.This object is achieved on the basis of the preamble in conjunction with the characterizing features of claim 1. Advantageous further developments and a device for carrying out the method are the subject of subclaims.
Nach der Lehre der Erfindung wird die abgezogene Schlackenmenge in Teilmengen unterteilt, wobei die jeweils abgezogene Teilschlackenmenge nur einem im Takt sich an der Abschlackstelle vorbeibewegenden Behälter zugeordnet wird. Anschließend wird die eingefüllte Teilschlackenmenge entlang einer festgelegten Wegstrecke kontinuierlich abgekühlt und anschließend abgeworfen.According to the teaching of the invention, the amount of slag withdrawn is subdivided into partial amounts, the amount of partial slag withdrawn in each case being assigned only to a container which moves past the deslagging point in time. Then the filled slag quantity continuously cooled along a specified distance and then thrown away.
Das vorgeschlagene Verfahren hat den Vorteil, dass der Abtransport der abgezogenen Schlacke getaktet in Teilmengen erfolgt und diese Teilmenge in sehr viel kürzerer Zeit abgekühlt werden kann.The proposed method has the advantage that the removal of the slag that has been drawn off is carried out in timed portions and that this amount can be cooled in a much shorter time.
Zur Durchführung des Verfahrens wird ein sog. Trogförderer vorgeschlagen, bestehend aus einer Vielzahl gleichartig ausgebildeter Behälter bzw. Tröge, die umlaufend ange- ordnet sind. Die aneinanderhängbaren Behälter können einen Endloszug bilden, wobei die Behälter mit Rädern versehen sind, die auf einem geschlossenen Schienenband abrollen. Bei einer anderen Ausführungsform sind die Behälter auf einem separaten umlaufenden Endlosband angeordnet. Um im Schadensfall beschädigte Behälter auswechseln zu können, sind diese lösbar am Endlosband befestigt. Bei jedem Hub des Schlackenabkratzens legt das Endlosband bzw. der Behälterzug einen festgelegtenTo carry out the method, a so-called trough conveyor is proposed, consisting of a multiplicity of containers or troughs of identical design, which are arranged all around. The containers which can be attached to one another can form an endless train, the containers being provided with wheels which roll on a closed rail belt. In another embodiment, the containers are arranged on a separate circulating endless belt. In order to be able to replace damaged containers in the event of damage, they are detachably attached to the endless belt. With each stroke of the slag scraping, the endless belt or the container train sets a fixed one
Förderweg zurück. Nach dem Einfüllen durchläuft das Endlosband bzw. der Behälterzug eine Kühlstrecke und fördert nach Abwurf der abgekühlten Schlacke die leeren Behälter zum Einfüllbereich zurück. Damit entfällt die aufwendige Transportlogistik vieler im Umlauf sich befindender Schlackenkübel.Funding path back. After filling, the endless belt or the container train passes through a cooling section and, after the cooled slag has been discharged, conveys the empty containers back to the filling area. This eliminates the complex transport logistics of many slag buckets in circulation.
Ein Problem bildet die Gefahr eines Anhaftens des in der Schlacke enthaltenen Roheisens bzw. Stahls an der Wandung des Auffangtrichters bzw. der einzelnen Behälter. Im Falle des Auffangtrichters wird das geschilderte Problem dadurch vermieden, dass man die Schrägflächen des Trichters so steil macht, dass die Kontaktzeit nicht ausreicht, um ein Anhaften zu ermöglichen. Nachteilig dabei ist, dass der Trichter sehr lang wird, um die erforderliche Öffnungsweite aufzuweisen. Alternativ dazu wird vorgeschlagen, die Innenflächen des Trichters mit gekühlten Kupferplatten auszukleiden. Diese Variante ist auch für die einzelnen Behälter anwendbar, die in Abwandlung dazu auch als wassergekühlte Kupfertröge ausgebildet werden können. Ein anderes Verfahren bietet sich in der Weise an, dass man vor dem Einfüllen der heißen Schlacke den Behälter zuvor mit einem kaltenOne problem is the risk of the pig iron or steel contained in the slag sticking to the wall of the collecting funnel or the individual containers. In the case of the collecting funnel, the problem described is avoided by making the inclined surfaces of the funnel so steep that the contact time is not sufficient to enable them to adhere. The disadvantage here is that the funnel becomes very long in order to have the required opening width. Alternatively, it is proposed to line the inner surfaces of the funnel with cooled copper plates. This variant can also be used for the individual containers, which can also be designed as water-cooled copper troughs. Another method offers itself in such a way that before filling the hot slag with a cold container
Feststoffteil auffüllt. Vorzugsweise ist dieser Feststoff gemahlene kalte Schlacke.Solid part fills up. This solid is preferably ground, cold slag.
Bei der Anordnung der Behälter auf dem Endlosband bilden sich zwischen den aufeinanderfolgenden Behältern Zwischenräume. Damit in diese Zwischenräume keine heiße Schlacke hineintropfen kann, weist jeder Behälter ein diesen Zwischenraum überdeckendes Abdeckblech auf.When the containers are arranged on the endless belt, spaces are formed between the successive containers. So that no hot slag can drip into these spaces, each container has a cover plate covering this space.
Weitere Merkmale, Vorteile und Einzelheiten der Erfindung ergeben sich aus der nachfolgenden Beschreibung von einem in einer Zeichnung dargestellten Ausführungs- beispiel. Es zeigen:Further features, advantages and details of the invention result from the following description of an embodiment shown in a drawing. example. Show it:
Figur 1 als Prinzipbild einen erfindungsgemäß ausgebildeten TrogfördererFigure 1 as a schematic diagram of a trough conveyor designed according to the invention
Figur 1 zeigt als Prinzipbild einen erfindungsgemäß ausgebildeten Trogförderer 1. Er besteht aus einem hier nur symbolhaft angedeuteten umlaufenden Endlosband 2, an dem mehrere gleichartig ausgebildete Behälter 3 befestigt sind. Die Umlauf richtung 4 des Endlosbandes 2 ist mit einem Pfeil gekennzeichnet. Das mit diesem Trogförderer 1 durchgeführte Verfahren zum Abtransport von abgezogenen Schlacken läuft wie nachfolgend beschrieben ab. Von einer hier nicht dargestellten Pfanne wird mittels eines hier ebenfalls nicht dargestellten Abschlackkratzers taktweise, d. h. im Takt des Hubes des Abschlack- kratzers eine bestimmte Schlackenmenge 5 abgezogen. Diese fällt in einen Auffangtrichter 6, der oberhalb des Endlosbandes 2 angeordnet ist und von dort aus gerichtet in einen darunter stehenden Behälter 3. Dieser Einfüllstation ist in diesem Ausführungs- beispiel eine Aufgabestation vorgeschaltet. Diese weist einen Zuführtrichter 7 auf, durch den dem zuvor leeren Behälter 3 eine vorgegebene Menge an kömigem Feststoff 8 aufgegeben wird. Vorzugsweise ist der körnige Feststoff 8 gemahlene kalte Schlacke. Dadurch wird der jeweilige Behälter 3 teilaufgefüllt. Durch diese Vorauffüllung wird verhindert, dass der in der Schlacke 5 vorhandene Restanteil an Roheisen oder Stahl an der Wandung des Behälters 3 anhaften kann. Beim Weitertransport durchlaufen die Behälter 3 eine Kühlstrecke, hier in Form eines Kühltunnels 9. Im Kühltunnel 9 sind in Transportrichtung 4 des Endlosbandes 2 gesehen mehrere Düsen 10 angeordnet, aus denen ein Kühlmedium 12, vorzugsweise Wasser spritzt, wobei der Strahl auf die vorbeiwandernden gefüllten Behälter 3 gerichtet ist. Die Anordnung eines Kühltunnels 9 hat den Vorteil, dass die beim Besprühen unvermeidlich entstehenden Dämpfe kontrolliert abgesaugt werden können. Dazu ist am Kühltunnel 9 eine hier nur angedeutete Absaugvorrichtung 13 installiert. Da jeder Behälter 3 nur eine relativ kleine Schlackenmenge 5 aufweist, ist sichergestellt, dass die Kühlstrecke ausreichend ist, um in Abstimmung mit der mittleren Transportgeschwindigkeit des Endlosbandes 2 eine Abkühlung der aufgegebenen Schlackenmenge 5 zu erreichen. An der Umkehrstelle des Endlosbandes 2 kommen dieFIG. 1 shows a schematic diagram of a trough conveyor 1 designed according to the invention. It consists of a revolving endless belt 2, only indicated symbolically here, to which a plurality of containers 3 of the same design are fastened. The circulation direction 4 of the endless belt 2 is marked with an arrow. The method carried out with this trough conveyor 1 for removing removed slags proceeds as described below. From a pan, not shown here, by means of a scraper scraper, also not shown here, intermittently, i. H. a certain amount of slag 5 is drawn off in time with the stroke of the scraper. This falls into a collecting funnel 6, which is arranged above the endless belt 2 and from there directed into a container 3 underneath. In this exemplary embodiment, a filling station is connected upstream of this filling station. This has a feed hopper 7, through which the previously empty container 3 is given a predetermined amount of granular solid 8. Preferably, the granular solid 8 is cold slag ground. As a result, the respective container 3 is partially filled. This pre-filling prevents the residual portion of pig iron or steel present in the slag 5 from adhering to the wall of the container 3. During further transport, the containers 3 pass through a cooling section, here in the form of a cooling tunnel 9. In the cooling tunnel 9, seen in the transport direction 4 of the endless belt 2, a plurality of nozzles 10 are arranged, from which a cooling medium 12, preferably water, sprays, the jet spraying onto the passing filled containers 3 is directed. The arrangement of a cooling tunnel 9 has the advantage that the vapors which are unavoidable during spraying can be sucked off in a controlled manner. For this purpose, a suction device 13, which is only indicated here, is installed on the cooling tunnel 9. Since each container 3 has only a relatively small amount of slag 5, it is ensured that the cooling section is sufficient to cool down the amount of slag 5 introduced in coordination with the average transport speed of the endless belt 2. At the reversal point of the endless belt 2 come the
Behälter 3 in Kippstellung, so dass der Gesamtinhalt, d. h. Vorfüllmenge + Schlackenmenge 5, auskippbar ist. Eine an dieser Stelle angeordnete Mulde 11 bildet die Auffangstelle. Von dort aus kann die schon abgekühlte Schlacke abgefahren und dem weiteren Verwendungszweck zugeführt werden. Ein Teil davon kann gemahlen und als Vorfüll- mittel zur Zuführeinrichtung 7 rückgeführt werden. Damit in die Zwischenräume zwischen den aufeinanderfolgenden Behältern 3 keine heiße Schlacke 5 tropfen kann, weist jeder Behälter 3 ein Abdeckblech 14 auf. BezugszeichenlisteContainer 3 in the tilted position, so that the total contents, ie pre-fill quantity + slag quantity 5, can be dumped out. A trough 11 arranged at this point forms the collecting point. From there, the slag that has already cooled can be removed and used for further use. A part of it can be ground and returned to the feed device 7 as a pre-filler. So that no hot slag 5 can drip into the spaces between the successive containers 3, each container 3 has a cover plate 14. LIST OF REFERENCE NUMBERS
Claims
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT01947178T ATE301725T1 (en) | 2000-05-25 | 2001-05-18 | METHOD FOR TRANSPORTING SLAG FORMING ON PIG IRON OR STEEL MELTS, IN PARTICULAR DESULFULIZATION SLAG |
| AU2001268941A AU2001268941A1 (en) | 2000-05-25 | 2001-05-18 | Method for conveying away slags, especially desulfurization slags |
| EP01947178A EP1285095B1 (en) | 2000-05-25 | 2001-05-18 | Method for conveying away slags forming on melts of iron or steel, especially desulfuration slag |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10027432.3 | 2000-05-25 | ||
| DE10027432A DE10027432C2 (en) | 2000-05-25 | 2000-05-25 | Process for the removal of solid desulfurization slag which forms during the desulfurization of pig iron |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2001090423A1 true WO2001090423A1 (en) | 2001-11-29 |
Family
ID=7644501
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/DE2001/001991 Ceased WO2001090423A1 (en) | 2000-05-25 | 2001-05-18 | Method for conveying away slags, especially desulfurization slags |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP1285095B1 (en) |
| AT (1) | ATE301725T1 (en) |
| AU (1) | AU2001268941A1 (en) |
| DE (1) | DE10027432C2 (en) |
| WO (1) | WO2001090423A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107699646A (en) * | 2017-11-16 | 2018-02-16 | 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 |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE582500C (en) * | 1933-08-16 | Paul Ohrt | Process for making porous slag | |
| GB457774A (en) * | 1935-06-04 | 1936-12-04 | Erik Bertil Bjorkman | Improvements relating to the production of foamed slag from liquid slag |
| US2212962A (en) * | 1937-04-12 | 1940-08-27 | Insulation Products Ltd | Means for puffing slag |
| DE831972C (en) * | 1950-07-28 | 1952-02-18 | Esch Werke K G Maschinenfabrik | Method and device for the production of Huettenbims |
| US2661575A (en) * | 1950-10-26 | 1953-12-08 | United States Steel Corp | Apparatus for fluffing slag |
| DE1508039A1 (en) * | 1951-01-28 | 1969-09-25 | Knapsack Ag | Method and device for the production of piece slag |
| JPS5495997A (en) * | 1978-01-12 | 1979-07-28 | Mitsubishi Heavy Ind Ltd | Molten slag treating method |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1803886A (en) * | 1929-02-20 | 1931-05-05 | Paul W Ausman | Slag cooling apparatus |
| DE618451C (en) * | 1934-07-21 | 1935-09-09 | Wilhelm Benzinger | Plant for casting refractory molten metal, especially blast furnace slag |
| AT406378B (en) * | 1995-01-24 | 2000-04-25 | Hulek Anton | Method and installation for dry cooling of metallurgical slag with heat recovery - with use of trough belt conveyor for slow solidification of slag into a crystalline structure |
-
2000
- 2000-05-25 DE DE10027432A patent/DE10027432C2/en not_active Expired - Fee Related
-
2001
- 2001-05-18 WO PCT/DE2001/001991 patent/WO2001090423A1/en not_active Ceased
- 2001-05-18 AU AU2001268941A patent/AU2001268941A1/en not_active Abandoned
- 2001-05-18 EP EP01947178A patent/EP1285095B1/en not_active Expired - Lifetime
- 2001-05-18 AT AT01947178T patent/ATE301725T1/en not_active IP Right Cessation
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE582500C (en) * | 1933-08-16 | Paul Ohrt | Process for making porous slag | |
| GB457774A (en) * | 1935-06-04 | 1936-12-04 | Erik Bertil Bjorkman | Improvements relating to the production of foamed slag from liquid slag |
| US2212962A (en) * | 1937-04-12 | 1940-08-27 | Insulation Products Ltd | Means for puffing slag |
| DE831972C (en) * | 1950-07-28 | 1952-02-18 | Esch Werke K G Maschinenfabrik | Method and device for the production of Huettenbims |
| US2661575A (en) * | 1950-10-26 | 1953-12-08 | United States Steel Corp | Apparatus for fluffing slag |
| DE1508039A1 (en) * | 1951-01-28 | 1969-09-25 | Knapsack Ag | Method and device for the production of piece slag |
| JPS5495997A (en) * | 1978-01-12 | 1979-07-28 | Mitsubishi Heavy Ind Ltd | Molten slag treating method |
Non-Patent Citations (1)
| Title |
|---|
| PATENT ABSTRACTS OF JAPAN vol. 003, no. 114 (C - 059) 21 September 1979 (1979-09-21) * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107699646A (en) * | 2017-11-16 | 2018-02-16 | 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 |
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| EP1285095A1 (en) | 2003-02-26 |
| EP1285095B1 (en) | 2005-08-10 |
| DE10027432C2 (en) | 2002-05-23 |
| DE10027432A1 (en) | 2001-12-06 |
| AU2001268941A1 (en) | 2001-12-03 |
| ATE301725T1 (en) | 2005-08-15 |
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