EP0771880A1 - Distribution chute for bell-less charging installations - Google Patents
Distribution chute for bell-less charging installations Download PDFInfo
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- EP0771880A1 EP0771880A1 EP96112422A EP96112422A EP0771880A1 EP 0771880 A1 EP0771880 A1 EP 0771880A1 EP 96112422 A EP96112422 A EP 96112422A EP 96112422 A EP96112422 A EP 96112422A EP 0771880 A1 EP0771880 A1 EP 0771880A1
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- Prior art keywords
- copper
- distribution chute
- chute
- cooling
- cooling channels
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B7/00—Blast furnaces
- C21B7/18—Bell-and-hopper arrangements
- C21B7/20—Bell-and-hopper arrangements with appliances for distributing the burden
Definitions
- the invention relates to a distribution chute for a bellless furnace furnace system with an outer jacket made of steel, an interior lining made of abrasion-resistant material and with cooling water connections on the chute holder for supplying the lower part of the distribution chute with cooling water.
- Blast furnaces especially large blast furnaces, as well as smaller blast furnaces that have been modernized by appropriate conversion, are now operated using the counter-pressure process.
- the smallest possible cross-section is required at the filling opening, although the large-area material acid (pillar of furniture) in the blast furnace requires a scattering / distribution that is as uniform and area-wide as possible, depending on the chemical and physical processes.
- the Möller is fed to the inspection locks via an adjustable pouring device. At their inlets and outlets, these are fitted with suitable sealing and shut-off flaps that are opened or closed in the payment cycle.
- the Möller is fed into a storage vessel and from there it is fed through a vertical, fixed inlet to the rotating and angle-adjustable distribution chute arranged in the furnace head.
- a distributor chute is known from DE 26 29 782, which has a semi-tubular jacket made of heat-resistant steel with a material outlet channel and a material impact element.
- the holder of the distribution chute consists of two duckbill-shaped staples.
- the distributor chute is provided with a lining made of individual wear parts, which are nested in a scale-like manner.
- a cavity formed by a raised floor is provided on the distributor chute at those points of the outer jacket which are most exposed to the heat radiation. This cavity is created by attaching an outer protective jacket that extends over the entire part of the chute length that is exposed to heat radiation.
- a coolant circulates in this cavity or cooler box and is supplied through a peripheral channel. This channel receives the coolant by means of a transition line on the holder of the distribution chute.
- the outer jacket is lined with an ff layer.
- a distributor chute for installation in a furnace in particular for use in a bellless bombardment system of a blast furnace, is known, which comprises a chute body with a top and a bottom, the top forming a chute channel and the bottom at least partially exposed to radiant heat in the oven.
- the heat-resistant ceramic plates are inserted between the hollow profiles attached to the chute body and through which a cooling medium flows, and are held by the latter.
- the hollow profiles through which the cooling medium flows can be engaged in lateral grooves in the ceramic plates, the hollow profiles being largely covered by the ceramic plates and having a circular cross section.
- the ceramic plates can be inserted between two parallel hollow profiles attached to the chute body at an intermediate distance.
- the object of the invention was therefore to improve the cooling of the known distribution chute of a large blast furnace, to increase the specific pig iron production and to minimize the downtimes.
- a copper-clad steel sheet is used to produce the outer casing of the distribution chute, the thickness of which is composed almost equally of a steel base sheet and a copper sheet.
- Explosive-clad sheets with a sheet thickness of approx. 30 mm have proven to be an advantageous material for large blast furnaces, which are cold bent by means of suitable sheet metal bending machines and turned into a semicircular Trough deformed. Before the deformation, open cooling channels are worked into the copper-clad sheet in the copper side, which are arranged in a meandering shape in relation to the longitudinal or transverse direction of the distributor chute axis.
- the cooling ducts can also be arranged in the copper sheet in an arcuate, elliptical or in another rounded shape or in a diamond, triangular or in another linear form.
- the open cooling channels are welded pressure-tight over the entire length with segments of thinner copper sheet, which are approx. 25% of the wall thickness of the copper layer of the plated sheet, and thereby form a closed cooling channel, so that controlled cooling (forced cooling) of the distribution chute on the Hot side facing side takes place.
- the copper-plated sheet metal of the distribution chute is additionally protected against heat radiation and the aggressive top gases with a layer of ff material (molding compound or door locking material).
- Fig. 1 shows the copper-clad steel sheet (5) before cold forming into a so-called half-shell or semicircular trough.
- Cooling channels (8) are incorporated into the copper sheet (7) of the copper-clad steel sheet (5), the cooling channels (14) running in the longitudinal direction and the cooling channels (15) running in the transverse direction to the longitudinal axis of the distributor chute.
- the cold cooling water is supplied to the cooling channels (8) from the outside via a cooling water supply line (3), the heated water is discharged via the cooling water discharge line (4).
- a single continuous copper-clad steel sheet (5) is used, which is adapted to the main dimensions of the distributor chute.
- Fig. 2 shows a section through the copper-clad steel plate (5) with the upper base plate (6) made of steel and the lower copper plate (7) before the cold working. Cooling channels (8) are worked into the copper sheet (7) as shown in FIG. 1, which are then welded continuously to a cooling channel cover (9). Bores (12) are made in the copper-plated steel sheet (5) in order to fasten wear parts (not shown).
- Fig. 3 shows a cross section through the distribution chute (1) after cold forming of the copper-clad steel sheet (5) into a half-shell.
- the wall of the distribution chute (1) consists of four components. Inside, the wearing parts (11) are fastened in holes (12) on the base plate (6) and copper plate (7) by means of fastening elements (13). The side of the copper-clad sheet (5) facing the inside of the furnace is additionally lined with an FF material (10) to protect it against corrosion and radiant heat.
- two rows of cooling channels (8, 9) are arranged on each side of the central axis in accordance with the embodiment according to FIG. 1 of the distributor chute (1).
- Fig. 4 shows a longitudinal section through the distributor chute (1) with the duckbill-shaped chute holder (2).
- the cooling water supply (3) and discharge lines (4) are arranged in the area of the holder (2), from which (3) the cooling water is forced to circulate through the longitudinal axis (14) and transverse direction (15) to the longitudinal axis of the distributor chute (1 ) arranged cooling channels (8) is guided.
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Blast Furnaces (AREA)
- Carbon Steel Or Casting Steel Manufacturing (AREA)
- Vertical, Hearth, Or Arc Furnaces (AREA)
- Furnace Charging Or Discharging (AREA)
- Crucibles And Fluidized-Bed Furnaces (AREA)
- Disintegrating Or Milling (AREA)
Abstract
Description
Die Erfindung betrifft eine Verteilerschurre für eine glockenlose Hochofen-Begichtungsanlage mit einem Außenmantel aus Stahl, einer innen angebrachten Verkleidung aus abriebfestem Material und mit Kühlwasseranschlüssen an der Schurrenhalterung zur Versorgung des unteren Teiles der Verteilerschurre mit Kühlwasser.The invention relates to a distribution chute for a bellless furnace furnace system with an outer jacket made of steel, an interior lining made of abrasion-resistant material and with cooling water connections on the chute holder for supplying the lower part of the distribution chute with cooling water.
Hochöfen, insbesondere Großhochöfen, sowie durch entsprechenden Umbau modernisierte kleinere Hochöfen, werden heute im Gegendruckverfahren betrieben.Blast furnaces, especially large blast furnaces, as well as smaller blast furnaces that have been modernized by appropriate conversion, are now operated using the counter-pressure process.
Letzteres bedeutet, daß diese Hochöfen unter ständig anstehendem Druck, bis 2,5 bar Überdruck an der Gicht, beschickt werden müssen.The latter means that these blast furnaces must be charged under constant pressure, up to 2.5 bar overpressure on the gout.
Somit kann das Schüttgut, der Möller, nur über solche Materialbunker bzw. gasdichten Schüttgutschleusen dem Hochofen zugeführt werden, die durch entsprechende Ein- und Auslaßabsperrungen den erforderlichen Druckausgleich gewährleisten.This means that the bulk material, the Möller, can only be fed to the blast furnace via material bunkers or gas-tight bulk material locks which ensure the necessary pressure equalization by means of appropriate inlet and outlet shut-offs.
Daher ist an der Einfüllöffnung ein möglichst kleiner Querschnitt erforderlich, obwohl die großflächige Materialsäure (Möllersäule) im Hochofen eine von den chemischen und physikalischen Vorgängen abhängige, möglichst gleichmäßige und flächendeckende Streuung/Verteilung erforderlich macht.Therefore, the smallest possible cross-section is required at the filling opening, although the large-area material acid (pillar of furniture) in the blast furnace requires a scattering / distribution that is as uniform and area-wide as possible, depending on the chemical and physical processes.
Aus der DE 20 35 458 ist eine glockenlose Schachtofenbegichtung bekannt, durch die Hochöfen abwechselnd durch zwei oder mehrere Begichtungsschleusen über eine im Hochofen-Ofenkopf unterhalb eines Auslauftrichters angeordnete, rotierende Verteilerschurre mit Schüttgut beschickt werden.From DE 20 35 458 a bellless shaft furnace inspection is known, through which the blast furnaces are alternately fed with bulk goods through two or more inspection locks via a rotating distributor chute arranged in the blast furnace furnace head below an outlet funnel.
Der Möller wird über eine umstellbare Schüttvorrichtung den Begichtungsschleusen zugeführt. Diese sind an ihren Ein- und Ausläufen mit geeigneten Dicht- und Absperrklappen versehen, die im Begichtungstakt geöffnet bzw. geschlossen werden.The Möller is fed to the inspection locks via an adjustable pouring device. At their inlets and outlets, these are fitted with suitable sealing and shut-off flaps that are opened or closed in the payment cycle.
Der Möller wird von hier in ein Staugefäß geleitet und von diesem durch einen senkrechten, feststehenden Einlauf der im Hochofenkopf angeordneten drehbaren und winkelverstellbaren Verteilerschurre zugeführt.From here, the Möller is fed into a storage vessel and from there it is fed through a vertical, fixed inlet to the rotating and angle-adjustable distribution chute arranged in the furnace head.
Aus der DE 26 29 782 ist eine Verteilerschurre bekannt, die einen halbrohrförmigen, aus hitzebeständigem Stahl hergestellten Mantel mit einem Material-Auslaufkanal und einem Material-Aufprallelement aufweist. Die Halterung der Verteilerschurre besteht aus zwei entenschnabelförmigen Krampen.A distributor chute is known from DE 26 29 782, which has a semi-tubular jacket made of heat-resistant steel with a material outlet channel and a material impact element. The holder of the distribution chute consists of two duckbill-shaped staples.
Die Verteilerschurre ist innen mit einer Verkleidung aus einzelnen Schleißteilen versehen, welche schuppenförmig ineinander verschachtelt sind. An der Verteilerschurre ist ein durch einen Doppelboden gebildeter Hohlraum an denjenigen Stellen des Außenmantels vorgesehen, welche der Wärmestrahlung am meisten ausgesetzt sind. Dieser Hohlraum entsteht durch das Anbringen eines äußeren Schutzmantels, welcher sich über den ganzen, der Wärmestrahlung ausgesetzten Teil der Schurrenlänge erstreckt. In diesem Hohlraum oder Kühlkasten zirkuliert eine Kühlflüssigkeit, welche durch einen peripheren Kanal zugeführt wird. Dieser Kanal erhält die Kühlflüssigkeit mittels einer Übergangsleitung an der Halterung der Verteilerschurre. Zusätzlich ist der Außenmantel mit einer ff-Schicht ausgekleidet.The distributor chute is provided with a lining made of individual wear parts, which are nested in a scale-like manner. A cavity formed by a raised floor is provided on the distributor chute at those points of the outer jacket which are most exposed to the heat radiation. This cavity is created by attaching an outer protective jacket that extends over the entire part of the chute length that is exposed to heat radiation. A coolant circulates in this cavity or cooler box and is supplied through a peripheral channel. This channel receives the coolant by means of a transition line on the holder of the distribution chute. In addition, the outer jacket is lined with an ff layer.
Aus der DE 44 30 265 A1 ist eine Verteilerschurre zum Einbau in einen Ofen, insbesondere für den Einsatz in einer glockenlosen Begichtungsanlage eines Hochofens, bekannt, die einen Schurrenkörper mit einer Oberseite und einer Unterseite umfaßt, wobei die Oberseite einen Schurrenkanal ausbildet und die Unterseite zumindest teilweise der Strahlungshitze im Ofen ausgesetzt ist.From DE 44 30 265 A1 a distributor chute for installation in a furnace, in particular for use in a bellless bombardment system of a blast furnace, is known, which comprises a chute body with a top and a bottom, the top forming a chute channel and the bottom at least partially exposed to radiant heat in the oven.
An der Unterseite sind die hitzebeständigen Keramikplatten zwischen am Schurrenkörper befestigten und von einem Kühlmedium durchströmten Hohlprofilen eingesetzt und werden von letzteren festgehalten.On the underside, the heat-resistant ceramic plates are inserted between the hollow profiles attached to the chute body and through which a cooling medium flows, and are held by the latter.
Zum Festhalten der Keramikplatten sind die vom Kühlmedium durchströmten Hohlprofile in seitliche Nuten der Keramikplatten eingreifbar, wobei die Hohlprofile durch die Keramikplatten weitgehend überdeckt werden und einen kreisrunden Querschnitt aufweisen. Die Keramikplatten sind zwischen je zwei parallelen, mit einem Zwischenabstand am Schurrenkörper befestigten Hohlprofilen einschiebbar.To hold the ceramic plates, the hollow profiles through which the cooling medium flows can be engaged in lateral grooves in the ceramic plates, the hollow profiles being largely covered by the ceramic plates and having a circular cross section. The ceramic plates can be inserted between two parallel hollow profiles attached to the chute body at an intermediate distance.
Bei modernen Großhochöfen wird der Koksverbrauch durch Einblasen von Öl und in letzter Zeit in verstärktem Umfang durch Einblasen von Feinkohle gesenkt.In modern large blast furnaces, coke consumption has been reduced by blowing in oil and, more recently, by blowing in fine coal.
Durch das Einblasen von preiswerter Steinkohle in größerem Umfang wird der gesamte Reduktionsprozeß von Eisenerzen in Form von Sinter oder Stückerz im Hochofen zu höheren Temperaturen verschoben, so daß die bisherigen Methoden beispielsweise zur Kühlung der inneren Wand des Schachtofens und vor allem der über der Möllersäule kreisenden Verteilerschurre nicht mehr ausreichend ist und dadurch die Standzeiten der Verteilerschurre erheblich reduziert wird. Eine Verminderung der Standzeit der Verteilerschurre bedeuten Stillstände in kürzeren Zeiträumen, senken die Produktivität und erhöhen die Betriebskosten.By blowing in inexpensive hard coal to a greater extent, the entire reduction process of iron ore in the form of sinter or lump ore in the blast furnace is shifted to higher temperatures, so that the previous methods, for example, for cooling the inner wall of the shaft furnace and especially the distributor chute circling above the mill column is no longer sufficient and the service life of the distribution chute is considerably reduced. Reducing the service life of the distribution chute means downtimes in shorter periods, lowering productivity and increasing operating costs.
Aufgabe der Erfindung war es daher, die Kühlung der bekannten Verteilerschurre eines Großhochofens zu verbessern, die spezifische Roheisenerzeugung zu erhöhen und die Stillstände zu minimieren.The object of the invention was therefore to improve the cooling of the known distribution chute of a large blast furnace, to increase the specific pig iron production and to minimize the downtimes.
Die Lösung der Aufgabe erfolgt durch die kennzeichnenden Merkmale von Anspruch 1, die Unteransprüche stellen eine vorteilhafte Ausgestaltung der Erfindung dar.The object is achieved by the characterizing features of
Erfindungsgemäß wird zur Herstellung des Außenmantels der Verteilerschurre ein kupferplattiertes Stahlblech verwendet, das in der Dicke zu fast gleichen Teilen aus einem Grundblech aus Stahl und aus einem Kupferblech besteht.According to the invention, a copper-clad steel sheet is used to produce the outer casing of the distribution chute, the thickness of which is composed almost equally of a steel base sheet and a copper sheet.
Als vorteilhaftes Material haben sich für Großhochöfen sprengplattierte Bleche mit einer Blechstärke von ca. 30 mm herausgestellt, die mittels geeigneter Blech-Biegemaschinen kalt gebogen und zu einem halbkreisförmigen Trog verformt werden. Vor der Verformung werden in das kupferplattierte Blech in der Kupferseite offene Kühlkanäle eingearbeitet, die mäanderförmig zur Längs- bzw. Querrichtung der Verteilerschurren-Achse angeordnet sind.Explosive-clad sheets with a sheet thickness of approx. 30 mm have proven to be an advantageous material for large blast furnaces, which are cold bent by means of suitable sheet metal bending machines and turned into a semicircular Trough deformed. Before the deformation, open cooling channels are worked into the copper-clad sheet in the copper side, which are arranged in a meandering shape in relation to the longitudinal or transverse direction of the distributor chute axis.
Die Kühlkanäle können auch bogen-, ellipsen- oder in einer anderen abgerundeten Form bzw. rauten-, dreieck- oder in einer anderen geradlinigen Form im Kupferblech angeordnet sein.The cooling ducts can also be arranged in the copper sheet in an arcuate, elliptical or in another rounded shape or in a diamond, triangular or in another linear form.
Die offenen Kühlkanäle werden über die gesamte Länge mit Segmenten aus dünnerem Kupferblech, die ca. 25 % der Wandstärke der Kupferschicht des plattierten Bleches betragen, druckdicht verschweißt und bilden dadurch einen geschlossenen Kühlkanal, so daß eine gesteuerte Kühlung (Zwangskühlung) der Verteilerschurre an der der Heißseite zugewandten Seite erfolgt.The open cooling channels are welded pressure-tight over the entire length with segments of thinner copper sheet, which are approx. 25% of the wall thickness of the copper layer of the plated sheet, and thereby form a closed cooling channel, so that controlled cooling (forced cooling) of the distribution chute on the Hot side facing side takes place.
Falls erforderlich, wird das kupferplattierte Blech der Verteilerschurre außen mit einer Schicht aus ff-Material (Spritzmasse bzw. Torkretiermaterial) gegen Wärmestrahlung und die aggressiven Gichtgase zusätzlich geschützt.If necessary, the copper-plated sheet metal of the distribution chute is additionally protected against heat radiation and the aggressive top gases with a layer of ff material (molding compound or door locking material).
Die Erfindung wird anhand von schematischen Ausführungsbeispielen näher erläutert.The invention is explained in more detail using schematic exemplary embodiments.
Es zeigen:
- Fig. 1
- eine Draufsicht auf das kupferplattierte Stahlblech vor der Kaltverformung,
- Fig. 2
- einen Schnitt durch das kupferplattierte Stahlblech,
- Fig. 3
- einen Querschnitt durch die Verteilerschurre,
- Fig. 4
- einen Längsschnitt durch die Verteilerschurre.
- Fig. 1
- a plan view of the copper-clad steel sheet before cold working,
- Fig. 2
- a section through the copper-clad steel sheet,
- Fig. 3
- a cross section through the distribution chute,
- Fig. 4
- a longitudinal section through the distribution chute.
Fig. 1 zeigt das kupferplattierte Stahlblech (5) vor der Kaltverformung zu einer sogenannten Halbschale bzw. halbkreisförmigen Trog. In das Kupferblech (7) des kupferplattierten Stahlbleches (5) sind Kühlkanäle (8) eingearbeitet, wobei die Kühlkanäle (14) in Längsrichtung und die Kühlkanäle (15) in Querrichtung zur Längsachse der Verteilerschurre verlaufen.Fig. 1 shows the copper-clad steel sheet (5) before cold forming into a so-called half-shell or semicircular trough. Cooling channels (8) are incorporated into the copper sheet (7) of the copper-clad steel sheet (5), the cooling channels (14) running in the longitudinal direction and the cooling channels (15) running in the transverse direction to the longitudinal axis of the distributor chute.
Das kalte Kühlwasser wird von außen über eine Kühlwasserzuführleitung (3) den Kühlkanälen (8) zugeführt, das erwärmte Wasser wird über die Kühlwasserabfuhrleitung (4) abgeführt. Zum Schutz der Verteilerschurre gegen die aus dem Hochofen aufsteigenden heißen Gichtgase wird ein einziges durchgehendes kupferplattiertes Stahlblech (5) verwendet, das den Hauptabmessungen der Verteilerschurre angepaßt ist.The cold cooling water is supplied to the cooling channels (8) from the outside via a cooling water supply line (3), the heated water is discharged via the cooling water discharge line (4). To protect the distributor chute against the hot top gases rising from the blast furnace, a single continuous copper-clad steel sheet (5) is used, which is adapted to the main dimensions of the distributor chute.
Fig. 2 zeigt einen Schnitt durch das kupferplattierte Stahlblech (5) mit dem oberen Grundblech (6) aus Stahl und dem unteren Kupferblech (7) vor der Kaltverformung. In das Kupferblech (7) werden entsprechend von Fig. 1 Kühlkanäle (8) eingearbeitet, die anschließend durchgehend mit einer Kühlkanalabdeckung (9) verschweißt werden. Zum Befestigen von nicht dargestellten Schleißteilen werden Bohrungen (12) in das kupferplattierte Stahlblech (5) eingebracht.Fig. 2 shows a section through the copper-clad steel plate (5) with the upper base plate (6) made of steel and the lower copper plate (7) before the cold working. Cooling channels (8) are worked into the copper sheet (7) as shown in FIG. 1, which are then welded continuously to a cooling channel cover (9). Bores (12) are made in the copper-plated steel sheet (5) in order to fasten wear parts (not shown).
Fig. 3 stellt einen Querschnitt durch die Verteilerschurre (1) nach erfolgter Kaltverformung des kupferplattierten Stahlbleches (5) zu einer Halbschale dar.Fig. 3 shows a cross section through the distribution chute (1) after cold forming of the copper-clad steel sheet (5) into a half-shell.
Die Wandung der Verteilerschurre (1) setzt sich aus vier Komponenten zusammen. Innen werden mittels Befestigungselementen (13) die Verschleißteile (11) in Bohrungen (12) am Grundblech (6) und Kupferblech (7) befestigt. Die dem Ofeninneren zugekehrte Seite des kupferplattierten Bleches (5) wird zum Schutz gegen Korrosion und Strahlungswärme zusätzlich mit einem ff-Material (10) ausgekleidet.The wall of the distribution chute (1) consists of four components. Inside, the wearing parts (11) are fastened in holes (12) on the base plate (6) and copper plate (7) by means of fastening elements (13). The side of the copper-clad sheet (5) facing the inside of the furnace is additionally lined with an FF material (10) to protect it against corrosion and radiant heat.
Im unteren Bereich sind auf jeder Seite der Mittelachse entsprechend der Ausführung nach Fig. 1 der Verteilerschurre (1) zwei Reihen von Kühlkanälen (8, 9) angeordnet.In the lower area, two rows of cooling channels (8, 9) are arranged on each side of the central axis in accordance with the embodiment according to FIG. 1 of the distributor chute (1).
Fig. 4 zeigt einen Längsschnitt durch die Verteilerschurre (1) mit der entenschnabelförmigen Schurrenhalterung (2). Im Bereich der Halterung (2) sind die Kühlwasserzufuhr- (3) bzw. Abführleitungen (4) angeordnet, von denen aus (3) das Kühlwasser im Zwangsumlauf durch die in Längsrichtung (14) und Querrichtung (15) zur Längsachse der Verteilerschurre (1) angeordneten Kühlkanäle (8) geführt wird.Fig. 4 shows a longitudinal section through the distributor chute (1) with the duckbill-shaped chute holder (2). The cooling water supply (3) and discharge lines (4) are arranged in the area of the holder (2), from which (3) the cooling water is forced to circulate through the longitudinal axis (14) and transverse direction (15) to the longitudinal axis of the distributor chute (1 ) arranged cooling channels (8) is guided.
- 11
- VerteilerschurreDistribution chute
- 22nd
- SchurrenhalterungChute bracket
- 33rd
- KühlwasserzuführleitungCooling water supply line
- 44th
- KühlwasserabführleitungCooling water discharge line
- 55
- Kupferplattiertes StahlblechCopper clad steel sheet
- 66
- GrundblechBase plate
- 77
- KupferblechCopper sheet
- 88th
- Kühlkanäle in 7Cooling channels in 7
- 99
- KühlkanalabdeckungCooling duct cover
- 1010th
- ff-Materialff material
- 1111
- Innere SchleißteileInner wear parts
- 1212th
- Bohrungdrilling
- 1313
- BefestigungselementeFasteners
- 1414
- Kühlkanal in Längsrichtung zur Verteiler-SchurrenachseCooling channel in the longitudinal direction to the distributor chute axis
- 1515
- Kühlkanal in Querrichtung zur Verteiler-SchurrenachseCooling channel in the transverse direction to the distributor chute axis
Claims (6)
dadurch gekennzeichnet,
daß der Außenmantel der Verteilerschurre (1) als kupferplattiertes Stahlblech (5), bestehend aus einem Grundblech (6) und einem Kupferblech (7), ausgeführt wird
und daß in das Kupferblech (7) des kupferplattierten Stahlbleches (5) Kühlkanäle (8) eingebracht sind.Distribution chute for a bellless blast furnace inspection system with an outer jacket made of steel, an interior cladding made of abrasion-resistant material and with cooling water connections on the chute holder to supply the lower part of the distribution chute with cooling water,
characterized,
that the outer casing of the distribution chute (1) is designed as a copper-clad steel sheet (5) consisting of a base sheet (6) and a copper sheet (7)
and that cooling channels (8) are introduced into the copper sheet (7) of the copper-clad steel sheet (5).
dadurch gekennzeichnet,
daß die Kühlkanäle (8) im Kupferblech (7) mit einer Kühlkanalabdeckung (9) versehen sind.Distribution chute according to claim 1,
characterized,
that the cooling channels (8) in the copper sheet (7) are provided with a cooling channel cover (9).
dadurch gekennzeichnet,
daß die Kühlkanäle (8) mäanderförmig im Kupferblech (7) angeordnet sind,
daß die Kühlkanäle (14) in Längsrichtung und daß die Kühlkanäle (15) in Querrichtung zur Achse der Verteilerschurre (1) verlaufen.Distribution chute according to claims 1 and 2,
characterized,
that the cooling channels (8) are arranged in a meandering shape in the copper sheet (7),
that the cooling channels (14) in the longitudinal direction and that the cooling channels (15) extend in the transverse direction to the axis of the distributor chute (1).
dadurch gekennzeichnet,
daß die Kühlkanäle (8) bogen-, ellipsen- oder in einer anderen abgerundeten Form im Kupferblech (7) angeordnet sind.Distribution chute according to claims 1 and 2,
characterized,
that the cooling channels (8) are arranged in an arc, ellipse or in another rounded shape in the copper sheet (7).
dadurch gekennzeichnet,
daß die Kühlkanäle (8) rauten-, dreieck- oder in einer anderen geradlinigen Form im Kupferblech (7) angeordnet sind.Distribution chute according to claims 1 and 2,
characterized,
that the cooling channels (8) are arranged in a diamond, triangular or other linear form in the copper sheet (7).
dadurch gekennzeichnet,
daß ff-Material (10) außen auf das kupferplattierte Stahlblech (5) aufgebracht ist.Distribution chute according to claims 1 to 3,
characterized,
that ff material (10) is applied to the outside of the copper-clad steel sheet (5).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19540504A DE19540504C1 (en) | 1995-10-31 | 1995-10-31 | Distributor chute, for bell-less blast furnace charger |
| DE19540504 | 1995-10-31 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0771880A1 true EP0771880A1 (en) | 1997-05-07 |
| EP0771880B1 EP0771880B1 (en) | 2001-10-04 |
Family
ID=7776235
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP96112422A Expired - Lifetime EP0771880B1 (en) | 1995-10-31 | 1996-08-01 | Distribution chute for bell-less charging installations |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP0771880B1 (en) |
| AT (1) | ATE206468T1 (en) |
| DE (2) | DE19540504C1 (en) |
| ES (1) | ES2166419T3 (en) |
| PT (1) | PT771880E (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| LU91653B1 (en) * | 2010-02-19 | 2011-08-22 | Wurth Paul Sa | Distribution chute for a charging device of a metallurgical reactor |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1558187A1 (en) * | 1966-04-15 | 1970-03-26 | Tsnii Tschornoy Metallourgiy I | Mold for continuous metal casting and process for their production |
| DE2035458A1 (en) * | 1969-07-31 | 1971-02-11 | Wurth Anciens Ets Paul | Shaft furnace topping-up device |
| DE2629782C2 (en) * | 1975-07-18 | 1985-06-27 | Société Anonyme des Anciens Ets. Paul Wurth, Luxemburg/Luxembourg | Distribution chute for bell-less blast furnace topping-up systems |
| EP0640539A1 (en) * | 1993-08-25 | 1995-03-01 | Paul Wurth S.A. | Charge distribution chute for bulk material |
| DE4430265A1 (en) * | 1993-09-01 | 1995-03-02 | Wurth Paul Sa | Distribution chute for installation in an oven |
-
1995
- 1995-10-31 DE DE19540504A patent/DE19540504C1/en not_active Expired - Fee Related
-
1996
- 1996-08-01 DE DE59607815T patent/DE59607815D1/en not_active Expired - Fee Related
- 1996-08-01 AT AT96112422T patent/ATE206468T1/en not_active IP Right Cessation
- 1996-08-01 ES ES96112422T patent/ES2166419T3/en not_active Expired - Lifetime
- 1996-08-01 EP EP96112422A patent/EP0771880B1/en not_active Expired - Lifetime
- 1996-08-01 PT PT96112422T patent/PT771880E/en unknown
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1558187A1 (en) * | 1966-04-15 | 1970-03-26 | Tsnii Tschornoy Metallourgiy I | Mold for continuous metal casting and process for their production |
| DE2035458A1 (en) * | 1969-07-31 | 1971-02-11 | Wurth Anciens Ets Paul | Shaft furnace topping-up device |
| DE2629782C2 (en) * | 1975-07-18 | 1985-06-27 | Société Anonyme des Anciens Ets. Paul Wurth, Luxemburg/Luxembourg | Distribution chute for bell-less blast furnace topping-up systems |
| EP0640539A1 (en) * | 1993-08-25 | 1995-03-01 | Paul Wurth S.A. | Charge distribution chute for bulk material |
| DE4430265A1 (en) * | 1993-09-01 | 1995-03-02 | Wurth Paul Sa | Distribution chute for installation in an oven |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| LU91653B1 (en) * | 2010-02-19 | 2011-08-22 | Wurth Paul Sa | Distribution chute for a charging device of a metallurgical reactor |
| WO2011101313A1 (en) * | 2010-02-19 | 2011-08-25 | Paul Wurth S.A. | Distribution chute for a charging device of a metallurgical reactor |
Also Published As
| Publication number | Publication date |
|---|---|
| ES2166419T3 (en) | 2002-04-16 |
| DE59607815D1 (en) | 2001-11-08 |
| PT771880E (en) | 2002-03-28 |
| ATE206468T1 (en) | 2001-10-15 |
| EP0771880B1 (en) | 2001-10-04 |
| DE19540504C1 (en) | 1996-11-28 |
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