EP0411336A1 - Cooling element for shaft furnace - Google Patents
Cooling element for shaft furnace Download PDFInfo
- Publication number
- EP0411336A1 EP0411336A1 EP90112721A EP90112721A EP0411336A1 EP 0411336 A1 EP0411336 A1 EP 0411336A1 EP 90112721 A EP90112721 A EP 90112721A EP 90112721 A EP90112721 A EP 90112721A EP 0411336 A1 EP0411336 A1 EP 0411336A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- cooling element
- plate body
- masonry
- cooling
- refractory
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000001816 cooling Methods 0.000 title claims abstract description 58
- 239000002184 metal Substances 0.000 claims abstract description 7
- 229910052751 metal Inorganic materials 0.000 claims abstract description 7
- 239000002826 coolant Substances 0.000 claims abstract description 5
- 239000004575 stone Substances 0.000 claims description 14
- 229910001018 Cast iron Inorganic materials 0.000 claims description 3
- 238000004026 adhesive bonding Methods 0.000 claims description 2
- 210000000746 body region Anatomy 0.000 claims 1
- 238000009434 installation Methods 0.000 claims 1
- 239000011449 brick Substances 0.000 abstract description 7
- 239000000463 material Substances 0.000 description 5
- 239000000126 substance Substances 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 230000035882 stress Effects 0.000 description 3
- 230000008646 thermal stress Effects 0.000 description 3
- 230000002349 favourable effect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000004570 mortar (masonry) Substances 0.000 description 2
- 239000011819 refractory material Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000012447 hatching Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B7/00—Blast furnaces
- C21B7/10—Cooling; Devices therefor
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/4935—Heat exchanger or boiler making
Definitions
- the invention relates to a liquid-flow cooling element for shaft furnace walls, in particular blast furnace walls, consisting of a plate body made of cast iron or another metal with tubes arranged in its interior, running parallel to the hot side and emerging on the cold side, carrying coolant, equipped on the hot side with predominantly horizontal ones Masonry brackets.
- Such cooling elements are usually arranged between the steel furnace shell and the furnace lining and connected to the cooling system of the shaft furnace.
- the cooling elements are provided with refractory material on the side facing the furnace interior.
- the duration of a furnace trip in a shaft furnace largely depends on the service life of the refractory lining. In addition to the choice of solid refractory qualities, their good cooling contributes to extending the service life.
- the cooling method by means of cooling elements through which liquid flows has proven particularly useful. In contrast to other methods, it ensures uniform cooling of the shaft furnace wall and thus also the furnace lining.
- the object of the invention is to extend the furnace journey by intensifying the cooling and to shorten the assembly time for the cooling elements when a shaft furnace is reloaded or relocated.
- the cooling element according to the invention is characterized by the following advantages: - Shorter delivery times for the shaft furnace and thus reduction in production downtime; - Better connection between refractory masonry and metal plate bodies, which guarantees improved heat dissipation and optimal cooling of the masonry and thus also ensures a longer service life for the cooling elements; -
- the cast-on, cooled nose of the panel body forms a solid support for the refractory masonry due to its arrangement on the lower panel body narrow side; - If a stone layer is broken off and lost after a long period of operation, this damage caused by the nose according to the invention is generally limited to a single cooling element, so that the adjacent cooling elements are not affected; -
- the predetermined breaking notches provided in the refractory stones ensure that not all of the refractory lining is lost, but that this process takes place in layers and with a delay; - Facing within the furnace is not necessary.
- the brickwork is carried out under favorable ergonomic conditions in the workshop, so that this way of working and the
- stones with different stretching behavior and resistance to mechanical abrasion and chemical attack can be selected.
- a material with high thermal conductivity e.g. SiC are used and a material with lower thermal conductivity for the layers away from the plate.
- the stone material should generally be as abrasion-resistant and resistant to chemical attack.
- the refractory masonry according to the invention can also be supported on shortened support lugs.
- the use of such cooling elements is such. B. possible in the upper shaft of the furnace.
- attachment of support lugs to the plate bodies of the cooling elements, e.g. in the rest of the shaft furnace, can be completely dispensed with.
- the cooling element designated as a whole (1) is composed of the metal plate body (2) with the coolant pipes (5, 6) and the refractory masonry (7).
- the plate body (2) is usually made of cast iron.
- the coolant pipes (5, 6) are usually made of steel.
- the plate body (2) has on its lower edge a support nose (4) projecting to the hot side, which serves to support the small-sized stones of the refractory masonry (7).
- the entire end face of the plate body (2) facing the furnace interior is provided with masonry brackets (3).
- a cooling tube (6) for cooling the support nose (4) is shown in Fig. 4 on an enlarged scale with entry and exit and has the shape of a lying figure eight, whereby a uniform cooling of the area of the support nose is achieved.
- the other main cooling tubes which cannot be seen in the drawings, are arranged parallel to the cooling tube shown.
- a single cooling tube (6) is normally sufficient to cool the support nose (4). If necessary, however, further cooling pipes can also be arranged.
- the refractory masonry (7) is composed of small-sized stones, which after casting the plate body (2) are assembled by gluing or cementing to form a one-piece cooling element (1).
- the cooling element according to the invention can namely completely, i.e. including refractory lining, can be built in a workshop without time pressure and under favorable ergonomic conditions. After installing the complete cooling elements in the furnace wall, the horizontal and vertical joints to the neighboring cooling elements only need to be sealed with mortar.
- Each cooling element is designed according to the invention so that there is a guarantee of a long service life in the shaft furnace, the separately cooled support nose arranged on the underside of the plate body reliably supporting the refractory masonry of the cooling element.
- the refractory bricks of the masonry (7) which are provided with tongue and groove in the circumferential direction, have notches (8) on one side, which serve the purpose of breaking down only a single annular layer of the refractory lining of a cooling element in the event of progressive wear of the masonry to cause instead of breaking off the entire refractory lining of the cooling element.
- These predetermined breaking notches (8) can also be attached to the stones on both sides.
- the bricks of the masonry (7) have joints all around, through which mechanical and thermal stresses are balanced.
- horizontal expansion joints (9) can also be provided in the refractory masonry (7), as can be seen in FIG. 2.
- refractory bricks of different quality can be used for the lining of the hot side of the cooling element (1).
- This enables better adaptation to different temperatures, mechanical and chemical stresses.
- stones made of highly abrasion-resistant material with lower thermal conductivity will be chosen for the surface of the cooling element facing the furnace interior than for the layer close to the plate body, which is expediently provided with stones made of material with high thermal conductivity.
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Furnace Housings, Linings, Walls, And Ceilings (AREA)
- Blast Furnaces (AREA)
Abstract
Description
Die Erfindung betrifft ein flüssigkeitsdurchströmtes Kühlelement für Schachtofenwände, insbesondere Hochofenwände, bestehend aus einem Plattenkörper aus Gußeisen oder einem anderen Metall mit in seinem Inneren angeordneten, zur Heißseite parallel verlaufenden und an der Kaltseite austretenden, Kühlmittel führenden Rohren, ausgerüstet auf der Heißseite mit vorwiegend horizontal verlaufenden Mauerwerkshalterungen.The invention relates to a liquid-flow cooling element for shaft furnace walls, in particular blast furnace walls, consisting of a plate body made of cast iron or another metal with tubes arranged in its interior, running parallel to the hot side and emerging on the cold side, carrying coolant, equipped on the hot side with predominantly horizontal ones Masonry brackets.
Derartige Kühlelemente sind üblicherweise zwischen dem stählernen Ofenmantel und der Ofenausmauerung angeordnet und an das Kühlsystem des Schachtofens angeschlossen. Auf der dem Ofeninneren zugewandten Seite sind die Kühlelemente mit feuerfestem Material versehen.Such cooling elements are usually arranged between the steel furnace shell and the furnace lining and connected to the cooling system of the shaft furnace. The cooling elements are provided with refractory material on the side facing the furnace interior.
Die Dauer einer Ofenreise hängt bei einem Schachtofen weitgehend von der Standzeit der feuerfesten Auskleidung ab. Zur Lebensdauerverlängerung trägt neben der Wahl stand fester Feuerfestqualitäten deren gute Kühlung bei.The duration of a furnace trip in a shaft furnace largely depends on the service life of the refractory lining. In addition to the choice of solid refractory qualities, their good cooling contributes to extending the service life.
Die Kühlmethode mittels flüssigkeitsdurchströmter Kühlelemente hat sich besonders bewährt. Im Gegensatz zu anderen Methoden bewirkt sie eine ganzflächige gleichmäßige Kühlung der Schachtofenwand und damit auch der Ofenausmauerung.The cooling method by means of cooling elements through which liquid flows has proven particularly useful. In contrast to other methods, it ensures uniform cooling of the shaft furnace wall and thus also the furnace lining.
Bisher wurde eine Ofenerstzustellung oder -neuzustellung in der Weise durchgeführt, daß die Kühlelemente, d.h. die metallenen Plattenkörper, zunächst auf die Innenfläche des stählernen Ofenmantels montiert und später die Feuerfestauskleidung von unten nach oben vorgemauert wurde. Zur Wärmeübertragung zwischen Feuerfestauskleidung und Plattenkörpern wurde der entstehende ringförmige Spalt sorgfältig mit Mörtel verfugt.Up to now, an initial or new delivery of the furnace has been carried out in such a way that the cooling elements, ie the metal plate bodies, first mounted on the inner surface of the steel furnace shell and later the refractory lining was bricked up from bottom to top. The resulting ring-shaped gap was carefully grouted with mortar to transfer heat between the refractory lining and the panel bodies.
Für den Verschleiß der Feuerfestauskleidung sind hauptsächlich chemische, mechanische und thermische Beanspruchungen maßgebend. Mit fortschreitendem Verschleiß der Auskleidung nimmt die thermische Belastung der Plattenkörper zu. Bei einem vollständigen Verlust der Feuerfestauskleidung erreichen auch die chemischen und mechanischen Beanspruchungen der Plattenkörper schließlich Höchstwerte.Mainly chemical, mechanical and thermal stresses are decisive for the wear of the refractory lining. As the lining wears down, the thermal stress on the panel body increases. If the refractory lining is completely lost, the chemical and mechanical stresses on the panel bodies will eventually reach maximum values.
Der Erfindung liegt die Aufgabe zugrunde, durch Intensivierung der Kühlung die Ofenreise zu verlängern und bei der Erst- bzw. Neuzustellung eines Schachtofens die Montagezeit für die Kühlelemente zu verkürzen.The object of the invention is to extend the furnace journey by intensifying the cooling and to shorten the assembly time for the cooling elements when a shaft furnace is reloaded or relocated.
Diese Aufgabe wird erfindungsgemäß in der Weise gelöst, wie es in den Patentansprüchen angegeben ist.According to the invention, this object is achieved in the manner as specified in the patent claims.
Das erfindungsgemäße Kühlelement zeichnet sich durch folgende Vorteile aus:
- Kürzere Zustellzeiten des Schachtofens und somit Reduzierung des Produktionsausfalls;
- Bessere Verbindung zwischen Feuerfestmauerwerk und metallenen Plattenkörpern, womit eine verbesserte Wärmeabfuhr und eine optimale Kühlung des Mauerwerkes garantiert und somit auch eine längere Lebensdauer der Kühlelemente sichergestellt wird;
- Die angegossene gekühlte Nase des Plattenkörpers bildet durch ihre Anordnung an der unteren Plattenkörper-Schmalseite eine solide Unterstützung für das Feuerfestmauerwerk;
- Bei Abbruch und Verlust einer Steinschicht nach längerer Betriebszeit ist dieser Schaden durch die erfindungsgemäße Nase in der Regel auf ein einziges Kühlelement begrenzt, so daß die angrenzenden Kühlelemente nicht in Mitleidenschaft gezogen werden;
- Die in den feuerfesten Steinen vorgesehenen Sollbruchkerben bewirken, daß nicht die gesamte vorgesetzte Feuerfestauskleidung verlorengeht, sondern dieser Prozeß schichtweise und verzögert stattfindet;
- Das Vormauern innerhalb des Ofens entfällt. Die Ausmauerungsarbeiten werden unter günstigen ergonomischen Bedingungen in der Werkstatt durchgeführt, so daß diese Arbeitsweise und der Fortfall des Zeitdruckes die Arbeitsqualität fördert.The cooling element according to the invention is characterized by the following advantages:
- Shorter delivery times for the shaft furnace and thus reduction in production downtime;
- Better connection between refractory masonry and metal plate bodies, which guarantees improved heat dissipation and optimal cooling of the masonry and thus also ensures a longer service life for the cooling elements;
- The cast-on, cooled nose of the panel body forms a solid support for the refractory masonry due to its arrangement on the lower panel body narrow side;
- If a stone layer is broken off and lost after a long period of operation, this damage caused by the nose according to the invention is generally limited to a single cooling element, so that the adjacent cooling elements are not affected;
- The predetermined breaking notches provided in the refractory stones ensure that not all of the refractory lining is lost, but that this process takes place in layers and with a delay;
- Facing within the furnace is not necessary. The brickwork is carried out under favorable ergonomic conditions in the workshop, so that this way of working and the absence of time pressure promote the quality of work.
Da das Dehnverhalten der feuerfesten Ausmauerung sich bekanntlich von dem der Plattenkörper unterscheidet, werden für das erfindungsgemäße Kühlelement kleinformatige Steine gewählt. Hierbei können sowohl Wärme als auch die mechanischen Spannungen über die normalen Fugen abgebaut werden. Falls dies bei bestimmten Qualitäten des Feuerfestmaterials nicht ausreicht, werden im Feuerfestteil des Kühlelementes zusätzliche Dehnfugen vorgesehen.Since the expansion behavior of the refractory lining is known to differ from that of the plate body, small-sized stones are chosen for the cooling element according to the invention. Both heat and mechanical stresses can be reduced through the normal joints. If this is not sufficient for certain qualities of the refractory material, additional expansion joints are provided in the refractory part of the cooling element.
Entsprechend der Belastung in den einzelnen konzentrischen Ringschichten können Steine mit unterschiedlichem Dehnverhalten und unterschiedlicher Beständigkeit gegen mechanischen Abrieb und chemische Angriffe gewählt werden. So kann beispielsweise für die erste plattenkörpernahe Schicht ein Material mit hoher Wärmeleitfähigkeit, wie z.B. SiC verwendet werden und bei den plattenferneren Schichten ein Material mit geringerer Wärmeleitfähigkeit. Es versteht sich von selbst, daß das Steinmaterial generell möglichst abriebfest und widerstandsfähig gegenüber chemischem Angriff sein sollte.Depending on the load in the individual concentric ring layers, stones with different stretching behavior and resistance to mechanical abrasion and chemical attack can be selected. For example, a material with high thermal conductivity, e.g. SiC are used and a material with lower thermal conductivity for the layers away from the plate. It goes without saying that the stone material should generally be as abrasion-resistant and resistant to chemical attack.
In bestimmten Bereichen des Schachtofens mit geringer Beanspruchung läßt sich das Feuerfestmauerwerk nach der Erfindung auch auf verkürzte Tragnasen abstützen. Der Einsatz derartiger Kühlelemente ist z. B. im oberen Schacht des Ofens möglich. Andererseits kann auf die Anbringung von Tragnasen an den Plattenkörpern der Kühlelemente, z.B. in der Rast des Schachtofens, gänzlich verzichtet werden.In certain areas of the shaft furnace with low loads, the refractory masonry according to the invention can also be supported on shortened support lugs. The use of such cooling elements is such. B. possible in the upper shaft of the furnace. On the other hand, attachment of support lugs to the plate bodies of the cooling elements, e.g. in the rest of the shaft furnace, can be completely dispensed with.
Nachstehend wird der Erfindungsgegenstand anhand der in den Zeichnungen dargestellten Ausführungsbeispiele näher erläutert.The subject matter of the invention is explained in more detail below on the basis of the exemplary embodiments illustrated in the drawings.
Es zeigen:
- Fig. 1 - 3 Längsschnitte eines Kühlelementes und
- Fig. 4 eine Einzelheit der Fig. 1 - 3, von der Kaltseite aus gesehen.
- Fig. 1-3 longitudinal sections of a cooling element and
- Fig. 4 shows a detail of Figs. 1-3, seen from the cold side.
Das insgesamt mit (1) bezeichnete Kühlelement ist aus dem metallenen Plattenkörper (2) mit den Kühlmittel führenden Rohren (5, 6) und dem feuerfesten Mauerwerk (7) zusammengesetzt. Der Plattenkörper (2) besteht in der Regel aus Gußeisen. Die Kühlmittelrohre (5, 6) sind üblicherweise aus Stahl.The cooling element designated as a whole (1) is composed of the metal plate body (2) with the coolant pipes (5, 6) and the refractory masonry (7). The plate body (2) is usually made of cast iron. The coolant pipes (5, 6) are usually made of steel.
Der Plattenkörper (2) besitzt an seiner Unterkante eine zur Heißseite vorspringende Tragnase (4), die zur Abstützung der kleinformatigen Steine des Feuerfestmauerwerks (7) dient. Die gesamte, dem Ofeninneren zugewandte Stirnfläche des Plattenkörpers (2) ist mit Mauerwerkshalterungen (3) versehen.The plate body (2) has on its lower edge a support nose (4) projecting to the hot side, which serves to support the small-sized stones of the refractory masonry (7). The entire end face of the plate body (2) facing the furnace interior is provided with masonry brackets (3).
In den Fig. 1 - 3 erkennt man im Längsschnitt eines der Hauptkühlrohre (5) mit Ein- und Austritt, ferner im Querschnitt ein Kühlrohr (6) für die Kühlung der Tragnase (4). Letzteres ist in Fig. 4 in vergrößertem Maßstab mit Ein- und Austritt dargestellt und weist die Gestalt einer liegenden Acht auf, wodurch eine gleichmäßige Kühlung des Bereichs der Tragnase erzielt wird.1-3, one can see in longitudinal section one of the main cooling tubes (5) with inlet and outlet, and also in cross section, a cooling tube (6) for cooling the support nose (4). The latter is shown in Fig. 4 on an enlarged scale with entry and exit and has the shape of a lying figure eight, whereby a uniform cooling of the area of the support nose is achieved.
Die weiteren in den Zeichnungen nicht erkennbaren Hauptkühlrohre sind parallel zu dem dargestellten Kühlrohr angeordnet. Für die Kühlung der Tragnase (4) genügt im Normalfall ein einziges Kühlrohr (6). Gegebenenfalls können jedoch auch weitere Kühlrohre angeordnet werden.The other main cooling tubes, which cannot be seen in the drawings, are arranged parallel to the cooling tube shown. A single cooling tube (6) is normally sufficient to cool the support nose (4). If necessary, however, further cooling pipes can also be arranged.
Das Feuerfestmauerwerk (7) ist aus kleinformatigen Steinen zusammengesetzt, die nach dem Abguß des Plattenkörpers (2) durch Verkleben oder Verkitten zu einem einstückigen Kühlelement (1) zusammengesetzt werden.The refractory masonry (7) is composed of small-sized stones, which after casting the plate body (2) are assembled by gluing or cementing to form a one-piece cooling element (1).
Hierin ist ein Hauptvorteil des erfindungsgemäßen Kühlelementes gegenüber bekannten Kühlplatten zu sehen. Die erfindungsgemäßen Kühlelemente können nämlich komplett, d.h. einschließlich feuerfester Auskleidung, in einer Werkstatt ohne Zeitdruck und unter günstigen ergonomischen Bedingungen einbaufähig hergestellt werden. Nach Einbau der kompletten Kühlelemente in die Ofenwand brauchen nur noch anschließend die horizontalen und vertikalen Fugen zu den benachbarten Kühlelementen mit Mörtel abgedichtet zu werden. Jedes Kühlelement ist erfindungsgemäß so gestaltet, daß die Gewähr für eine lange Standzeit im Schachtofen gegeben ist, wobei die an der Plattenkörperunterseite angeordnete, separat gekühlte Tragnase das Feuerfestmauerwerk des Kühlelementes zuverlässig abstützt.This is a main advantage of the cooling element according to the invention compared to known cooling plates. The cooling elements according to the invention can namely completely, i.e. including refractory lining, can be built in a workshop without time pressure and under favorable ergonomic conditions. After installing the complete cooling elements in the furnace wall, the horizontal and vertical joints to the neighboring cooling elements only need to be sealed with mortar. Each cooling element is designed according to the invention so that there is a guarantee of a long service life in the shaft furnace, the separately cooled support nose arranged on the underside of the plate body reliably supporting the refractory masonry of the cooling element.
Die feuerfesten Steine des Mauerwerks (7), die in Umfangsrichtung mit Nut und Feder versehen sind, weisen auf einer Seite Kerben (8) auf, die dem Zweck dienen, bei fortschreitendem Verschleiß des Mauerwerks einen Sollbruch nur jeweils einer einzelnen Ringschicht der Feuerfestauskleidung eines Kühlelementes zu verursachen anstelle des Abbrechens der gesamten Feuerfestverkleidung des Kühlelementes. Diese Sollbruchkerben (8) können auch beidseitig an den Steinen angebracht sein.The refractory bricks of the masonry (7), which are provided with tongue and groove in the circumferential direction, have notches (8) on one side, which serve the purpose of breaking down only a single annular layer of the refractory lining of a cooling element in the event of progressive wear of the masonry to cause instead of breaking off the entire refractory lining of the cooling element. These predetermined breaking notches (8) can also be attached to the stones on both sides.
Die Steine des Mauerwerks (7) besitzen ringsherum Fugen, durch die mechanische und thermische Spannungen ausgeglichen werden. Darüber hinaus können im Feuerfestmauerwerk (7), wie aus Fig. 2 ersichtlich, zusätzlich horizontale Dehnfugen (9) vorgesehen werden.The bricks of the masonry (7) have joints all around, through which mechanical and thermal stresses are balanced. In addition, horizontal expansion joints (9) can also be provided in the refractory masonry (7), as can be seen in FIG. 2.
In Fig. 3 ist durch unterschiedliche Schraffur dargestellt, daß für die Auskleidung der Heißseite des Kühlelementes (1) feuerfeste Steine unterschiedlicher Qualität verwendet werden können. Damit ist eine bessere Anpassung an örtlich unterschiedliche Temperaturen, mechanische und chemische Beanspruchungen möglich. So wird man beispielsweise für die dem Ofeninneren zugewandte Fläche des Kühlelementes Steine aus hochabriebfestem Material mit geringerer Wärmeleitfähigkeit wählen als für die plattenkörpernahe Schicht, die zweckmäßigerweise mit Steinen aus Material mit hoher Wärmeleitfähigkeit versehen wird.In Fig. 3 is shown by different hatching that refractory bricks of different quality can be used for the lining of the hot side of the cooling element (1). This enables better adaptation to different temperatures, mechanical and chemical stresses. For example, stones made of highly abrasion-resistant material with lower thermal conductivity will be chosen for the surface of the cooling element facing the furnace interior than for the layer close to the plate body, which is expediently provided with stones made of material with high thermal conductivity.
Claims (7)
dadurch gekennzeichnet,
daß die Unterkante der Heißseite des Plattenkörpers (2) als Tragnase (4) für das feuerfeste Mauerwerk (7) ausgebildet ist, daß die Tragnase (4) durch mindestens ein zusätzliches Kühlrohr (6) kühlbar ist und daß nach dem Abguß des metallenen Plattenkörpers (2), jedoch vor dem Einbau in die Schachtofenwand auf die Heißseite des Plattenkörpers (2) in horizontaler Richtung in konzentrischen Ringen ein feuerfestes Mauerwerk (7) aufgebracht und mit dem Plattenkörper (2) mittels Verkitten oder Verkleben zu einem einstückigen Kühlelement (1) verbunden wird.1. Liquid-flowing cooling element for shaft furnace walls, in particular blast furnace walls, consisting of a plate body made of cast iron or another metal with tubes arranged in its interior, running parallel to the hot side and emerging on the cold side and carrying coolant, equipped on the hot side with predominantly horizontal masonry brackets,
characterized,
that the lower edge of the hot side of the plate body (2) is designed as a support lug (4) for the fireproof masonry (7), that the support lug (4) can be cooled by at least one additional cooling tube (6) and that after the metal plate body has been cast ( 2), but before installation in the shaft furnace wall on the hot side of the plate body (2) in a horizontal direction in concentric rings, fireproof masonry (7) and connected to the plate body (2) by means of cementing or gluing to form a one-piece cooling element (1) becomes.
dadurch gekennzeichnet,
daß das feuerfeste Mauerwerk (7) aus kleinformatigen Steinen besteht, die mit Sollbruchkerben (8) versehen sind.2. Cooling element according to claim 1,
characterized,
that the fireproof masonry (7) consists of small-sized stones, which are provided with predetermined breaking notches (8).
dadurch gekennzeichnet,
daß die Steine des feuerfesten Mauerwerks (7) in Umfangsrichtung mit Nut und Feder versehen sind.3. Cooling element according to claims 1 and 2,
characterized,
that the stones of the refractory masonry (7) are provided with tongue and groove in the circumferential direction.
dadurch gekennzeichnet,
daß für die einzelnen konzentrischen Ringe des feuerfesten Mauerwerkes (7) Steine unterschiedlicher Qualität verwendet werden.4. Cooling element according to claims 1 to 3,
characterized,
that stones of different quality are used for the individual concentric rings of the refractory masonry (7).
dadurch gekennzeichnet,
daß die Steinlagen des feuerfesten Mauerwerkes (7) vorwiegend horizontale Dehnfugen (9) aufweisen.5. Cooling element according to claims 1 to 4,
characterized,
that the stone layers of the refractory masonry (7) have mainly horizontal expansion joints (9).
dadurch gekennzeichnet,
daß die Ein- und Austritte der Hauptkühlrohre (5) dicht an der Ober- bzw. Unterseite des Plattenkörpers (2) liegen und Ein- und Austritt der Tragnasenkühlung (6) sich im dazwischenliegenden Plattenkörperbereich befinden.6. Cooling element according to claim 1,
characterized,
that the inlets and outlets of the main cooling tubes (5) lie close to the top and bottom of the plate body (2) and the inlet and outlet of the support nose cooling (6) are located in the plate body region in between.
dadurch gekennzeichnet,
daß das Kühlrohr (6) innerhalb der Tragnase (4) als liegende Acht ausgeführt ist.7. Cooling element according to claim 6,
characterized,
that the cooling tube (6) inside the support nose (4) is designed as a figure eight.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE3925280 | 1989-07-31 | ||
| DE3925280A DE3925280A1 (en) | 1989-07-31 | 1989-07-31 | LIQUID-FLOWED COOLING ELEMENT FOR SHAFT OVENS |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0411336A1 true EP0411336A1 (en) | 1991-02-06 |
| EP0411336B1 EP0411336B1 (en) | 1994-04-13 |
Family
ID=6386203
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP90112721A Expired - Lifetime EP0411336B1 (en) | 1989-07-31 | 1990-07-04 | Cooling element for shaft furnace |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US5251882A (en) |
| EP (1) | EP0411336B1 (en) |
| JP (1) | JP2662648B2 (en) |
| CA (1) | CA2022276C (en) |
| DE (2) | DE3925280A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0741190A1 (en) * | 1995-05-05 | 1996-11-06 | MAN Gutehoffnungshütte Aktiengesellschaft | Cooling plates for shaft furnaces |
| WO2017201172A1 (en) * | 2016-05-17 | 2017-11-23 | Berry Metal Company | Furnace stave |
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5676481A (en) * | 1991-09-26 | 1997-10-14 | Gillette Company | Marking instruments |
| US5464592A (en) * | 1993-11-22 | 1995-11-07 | Texaco Inc. | Gasifier throat |
| ATE189265T1 (en) * | 1994-10-07 | 2000-02-15 | Schloemann Siemag Ag | COOLING PLATE FOR SHAFT OVENS |
| DE19503912C2 (en) * | 1995-02-07 | 1997-02-06 | Gutehoffnungshuette Man | Cooling plate for shaft furnaces, especially blast furnaces |
| DE19751356C2 (en) * | 1997-11-20 | 2002-04-11 | Sms Demag Ag | Cooling elements for shaft furnaces |
| FI109937B (en) * | 1999-05-26 | 2002-10-31 | Outokumpu Oy | A process for manufacturing a composite cooling element for a metallurgical reactor melt compartment and a composite cooling element for the process |
| AT410717B (en) * | 2001-10-17 | 2003-07-25 | Voest Alpine Ind Anlagen | COOLING PLATE WITH REINFORCEMENT PART |
| FI115251B (en) * | 2002-07-31 | 2005-03-31 | Outokumpu Oy | Heat Sink |
| EP1391521A1 (en) | 2002-08-20 | 2004-02-25 | Voest-Alpine Industrieanlagenbau GmbH & Co. | Cooling plate for metallurgical furnace |
| MX2012011388A (en) * | 2010-03-30 | 2013-01-29 | Berry Metal Co | Plate cooler stave apparatus and methods for ferrous or non-ferrous metal making furnace. |
| KR101585810B1 (en) * | 2014-12-22 | 2016-01-15 | 주식회사 포스코 | Apparatus for cooling furnace |
| EP3417225B1 (en) * | 2016-02-18 | 2023-11-01 | Hatch Ltd. | Wear resistant composite material and method of manufacturing a cooling element |
| CN110129496B (en) * | 2019-04-17 | 2021-01-01 | 唐山钢铁集团有限责任公司 | Method for judging bonding state of blast furnace wall |
| RU2729800C1 (en) * | 2019-07-09 | 2020-08-12 | Акционерное общество «ЕВРАЗ Нижнетагильский металлургический комбинат» (АО «ЕВРАЗ НТМК») | Device for water cooling of blast furnace bottom |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1571789A (en) * | 1976-12-30 | 1980-07-16 | Brown & Sons Ltd James | Furnace cooling element |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL7303769A (en) * | 1973-03-19 | 1974-09-23 | ||
| SU439178A1 (en) * | 1973-05-25 | 1977-11-25 | Всесоюзный Научно-Исследовательский И Проектный Институт По Очистке Технологических Газов, Сточных Вод И Использованию Вторичных Энергоресурсов Предприятий Черной Металлургии | Blast furnace cooler |
| FR2493871A1 (en) * | 1980-11-07 | 1982-05-14 | Usinor | COOLING PLATES FOR BLAST FURNACES |
| JPS58501918A (en) * | 1981-11-16 | 1983-11-10 | フセソユ−ズヌイ・ナウチノ−イスレドワ−チエルスキ−・イ・プロエクトヌイ・インスチツ−ト・ポ・オチストケ・チエフノロギチエスキフ・ガゾフ・ストチヌイフ・ヴオド・イ・イスポルゾワ−ニユ・フトリチヌイフ・エネルゴレスルソフ・プレドプリヤトイ・チエルノイ・メタルルギイ゛フニピチエルメトエネルゴオチストカ「あ」 | Metallurgical furnace cooling system |
| JPS6335708A (en) * | 1986-07-31 | 1988-02-16 | Nippon Steel Corp | Protective wall of body of blast furnace |
| JPH0663012B2 (en) * | 1988-08-10 | 1994-08-17 | 川崎製鉄株式会社 | Blast furnace furnace body protection wall |
-
1989
- 1989-07-31 DE DE3925280A patent/DE3925280A1/en not_active Withdrawn
-
1990
- 1990-06-13 JP JP2152897A patent/JP2662648B2/en not_active Expired - Lifetime
- 1990-07-04 EP EP90112721A patent/EP0411336B1/en not_active Expired - Lifetime
- 1990-07-04 DE DE59005330T patent/DE59005330D1/en not_active Expired - Fee Related
- 1990-07-30 CA CA002022276A patent/CA2022276C/en not_active Expired - Fee Related
- 1990-07-30 US US07/559,839 patent/US5251882A/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1571789A (en) * | 1976-12-30 | 1980-07-16 | Brown & Sons Ltd James | Furnace cooling element |
Non-Patent Citations (2)
| Title |
|---|
| PATENT ABSTRACTS OF JAPAN, Band 12, Nr. 248 (C-511)[3095], 13. Juli 1988; & JP-A-63-035 708 (NIPPON STEEL CORP.) 16-02-1988 * |
| PATENT ABSTRACTS OF JAPAN, Band 14, Nr. 211 (C-715)[4154], 2. Mai 1990; & JP-A-2-047 211 (KAWASAKI STEEL CORP.) 16-02-1990 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0741190A1 (en) * | 1995-05-05 | 1996-11-06 | MAN Gutehoffnungshütte Aktiengesellschaft | Cooling plates for shaft furnaces |
| WO2017201172A1 (en) * | 2016-05-17 | 2017-11-23 | Berry Metal Company | Furnace stave |
| EP3767213A1 (en) * | 2016-05-17 | 2021-01-20 | Berry Metal Company | Furnace stave |
| US11384985B2 (en) | 2016-05-17 | 2022-07-12 | Berry Metal Company | Furnace stave |
Also Published As
| Publication number | Publication date |
|---|---|
| US5251882A (en) | 1993-10-12 |
| CA2022276C (en) | 2000-10-24 |
| EP0411336B1 (en) | 1994-04-13 |
| JPH0370989A (en) | 1991-03-26 |
| JP2662648B2 (en) | 1997-10-15 |
| CA2022276A1 (en) | 1991-02-01 |
| DE3925280A1 (en) | 1991-02-07 |
| DE59005330D1 (en) | 1994-05-19 |
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