EP0771880B1 - Distribution chute for bell-less charging installations - Google Patents
Distribution chute for bell-less charging installations Download PDFInfo
- Publication number
- EP0771880B1 EP0771880B1 EP96112422A EP96112422A EP0771880B1 EP 0771880 B1 EP0771880 B1 EP 0771880B1 EP 96112422 A EP96112422 A EP 96112422A EP 96112422 A EP96112422 A EP 96112422A EP 0771880 B1 EP0771880 B1 EP 0771880B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- copper
- chute
- sheet
- distributor chute
- cooling
- 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.)
- Expired - Lifetime
Links
- 238000009434 installation Methods 0.000 title claims description 3
- 238000009826 distribution Methods 0.000 title description 23
- 238000001816 cooling Methods 0.000 claims abstract description 28
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 20
- 239000010959 steel Substances 0.000 claims abstract description 20
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 18
- 229910052802 copper Inorganic materials 0.000 claims abstract description 18
- 239000010949 copper Substances 0.000 claims abstract description 18
- 239000000498 cooling water Substances 0.000 claims abstract description 12
- 239000000463 material Substances 0.000 claims description 11
- 238000005299 abrasion Methods 0.000 claims description 2
- QNRATNLHPGXHMA-XZHTYLCXSA-N (r)-(6-ethoxyquinolin-4-yl)-[(2s,4s,5r)-5-ethyl-1-azabicyclo[2.2.2]octan-2-yl]methanol;hydrochloride Chemical compound Cl.C([C@H]([C@H](C1)CC)C2)CN1[C@@H]2[C@H](O)C1=CC=NC2=CC=C(OCC)C=C21 QNRATNLHPGXHMA-XZHTYLCXSA-N 0.000 claims 1
- 239000011819 refractory material Substances 0.000 claims 1
- 239000000919 ceramic Substances 0.000 description 5
- 239000002826 coolant Substances 0.000 description 4
- 238000007689 inspection Methods 0.000 description 4
- 238000007664 blowing Methods 0.000 description 3
- 239000013590 bulk material Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000005855 radiation Effects 0.000 description 3
- 238000005482 strain hardening Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000003245 coal Substances 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 241000273930 Brevoortia tyrannus Species 0.000 description 1
- 201000005569 Gout Diseases 0.000 description 1
- 208000007101 Muscle Cramp Diseases 0.000 description 1
- 241000405070 Percophidae Species 0.000 description 1
- 229910000805 Pig iron Inorganic materials 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000000571 coke Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000011946 reduction process Methods 0.000 description 1
- 238000009418 renovation Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- 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 blast furnace coating system with an outer jacket made of steel, an interior paneling made of abrasion-resistant material and with cooling water connections on the chute holder to supply the lower part of the chute with cooling water.
- Blast furnaces especially large blast furnaces, as well as by corresponding renovation of modernized small furnaces, are operated today in the counter pressure process.
- DE 20 35 458 describes a bellless shaft furnace inspection known, alternately by the blast furnaces through two or more inspection locks over one in the blast furnace head below an outlet funnel arranged, rotating distribution chute with bulk material be loaded.
- the Möller is over an adjustable pouring device fed to the inspection locks. These are on their inlets and outlets with suitable sealing and Butterfly valves are provided in the payment cycle be opened or closed.
- the Möller is led into a storage vessel and from this by a vertical, fixed Inlet of the rotatable and arranged in the furnace head angle-adjustable distribution chute.
- a distributor chute is known from DE 26 29 782, which is a semi-tubular, made of heat-resistant steel manufactured jacket with a material outlet channel and has a material impact element.
- the distribution chute holder consists of two duckbills Cramps.
- the distribution chute is covered on the inside from individual wear parts, which are scale-like are nested within each other.
- a double floor Cavity provided at those points of the outer jacket, which are most exposed to heat radiation are. This cavity is created by the Attach an outer protective jacket, which is over the whole part exposed to heat radiation the chute length extends.
- Cooler circulates a coolant which is supplied through a peripheral channel. This The channel receives the coolant by means of a transition line on the bracket of the distribution chute.
- the outer jacket with an ff layer lined.
- DE 44 30 265 A1 describes a distributor chute for Installation in an oven, especially for use in a bell-less blast furnace inspection system, known to have a chute body with a top and a bottom surface, the top surface being a Schurrenkanal forms and at least the bottom partially exposed to radiant heat in the oven.
- the cooling medium is used to hold the ceramic plates flowed through hollow profiles in lateral grooves of the Ceramic plates can be engaged, with the hollow profiles through the ceramic plates are largely covered and have a circular cross-section.
- the ceramic plates are between two in parallel, with one Intermediate distance on the chute body attached hollow profiles insertable.
- the object of the invention was therefore to cool the known distribution chute of a large blast furnace improve the specific pig iron production too increase and minimize downtimes.
- the distributor chute is a copper-clad steel sheet used that in the thickness of almost equal parts a steel base plate and a copper plate consists.
- the cooling channels can also be curved, elliptical or in another rounded shape or diamond, triangular or in another straightforward form in the copper sheet be arranged.
- the open cooling channels are along the entire length with segments made of thin copper sheet, which are approx. 25% the wall thickness of the copper layer of the clad Sheet, weld pressure-tight and form thereby a closed cooling channel, so that a Controlled cooling (forced cooling) of the distribution chute on the side facing the hot side.
- the copper-clad sheet is the Distribution chute with a layer on the outside ff material (spray compound or gate locking material) against Heat radiation and the aggressive top gases in addition protected.
- the invention is based on schematic Exemplary embodiments explained in more detail.
- Fig. 1 shows the copper-clad steel sheet (5) cold forming into a so-called half-shell or semicircular trough.
- the cold cooling water is supplied from the outside via a cooling water supply line (3) fed to the cooling channels (8), the heated water is discharged through the cooling water discharge line (4) dissipated.
- a cooling water supply line (3) fed to the cooling channels (8), the heated water is discharged through the cooling water discharge line (4) dissipated.
- Fig. 2 shows a section through the copper-clad Sheet steel (5) with the upper base plate (6) made of steel and the lower copper sheet (7) before cold working.
- the copper sheet (7) according to Fig. 1st Cooling channels (8) incorporated, which are then continuous welded to a cooling duct cover (9) become.
- holes (12) in the copper-clad Sheet steel (5) introduced.
- Fig. 3 shows a cross section through the distribution chute (1) after cold working of the copper-clad Steel sheet (5) to a half-shell.
- the wall of the distribution chute (1) is exposed four components together. Inside are by means of Fasteners (13) the wearing parts (11) in Bores (12) on the base plate (6) and copper plate (7) attached. The side of the copper-clad sheet (5) is used to protect against Corrosion and radiant heat with one ff material (10) lined.
- Fig. 4 shows a longitudinal section through the distributor chute (1) with the duckbill-shaped chute holder (2).
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Blast Furnaces (AREA)
- Crucibles And Fluidized-Bed Furnaces (AREA)
- Disintegrating Or Milling (AREA)
- Carbon Steel Or Casting Steel Manufacturing (AREA)
- Furnace Charging Or Discharging (AREA)
- Vertical, Hearth, Or Arc Furnaces (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 blast furnace coating system with an outer jacket made of steel, an interior paneling made of abrasion-resistant material and with cooling water connections on the chute holder to supply the lower part of the 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 by corresponding Renovation of modernized small furnaces, are operated today in 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 are under constant pressure, up to 2.5 bar overpressure at the gout, have to be loaded.
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 transported through such Material bunkers or gas-tight bulk material locks Blast furnace can be fed by appropriate Inlet and outlet barriers the required Ensure pressure equalization.
Daher ist an der Einfüllöffnung ein möglichst kleiner Querschnitt erforderlich, obwohl die großflächige Materialsäule (Möllersäule) im Hochofen eine von den chemischen und physikalischen Vorgängen abhängige, möglichst gleichmäßige und flächendeckende Streuung/Verteilung erforderlich macht.Therefore, the smallest possible at the filling opening Cross section required, although the large area Material column in the blast furnace one of the chemical and physical processes dependent, as even and comprehensive as possible Scattering / distribution required.
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. DE 20 35 458 describes a bellless shaft furnace inspection known, alternately by the blast furnaces through two or more inspection locks over one in the blast furnace head below an outlet funnel arranged, rotating distribution chute with bulk material be loaded.
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 over an adjustable pouring device fed to the inspection locks. These are on their inlets and outlets with suitable sealing and Butterfly valves are provided in the payment cycle be opened or closed.
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 led into a storage vessel and from this by a vertical, fixed Inlet of the rotatable and arranged in the furnace head angle-adjustable distribution chute.
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 is a semi-tubular, made of heat-resistant steel manufactured jacket with a material outlet channel and has a material impact element. The The distribution chute holder consists of two duckbills Cramps.
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 distribution chute is covered on the inside from individual wear parts, which are scale-like are nested within each other. At the distribution chute is a double floor Cavity provided at those points of the outer jacket, which are most exposed to heat radiation are. This cavity is created by the Attach an outer protective jacket, which is over the whole part exposed to heat radiation the chute length extends. In this cavity or Cooler circulates a coolant which is supplied through a peripheral channel. This The channel receives the coolant by means of a transition line on the bracket of the distribution chute. In addition, the outer jacket with an ff layer lined.
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.DE 44 30 265 A1 describes a distributor chute for Installation in an oven, especially for use in a bell-less blast furnace inspection system, known to have a chute body with a top and a bottom surface, the top surface being a Schurrenkanal forms and at least the bottom 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.At the bottom are the heat-resistant ceramic plates between attached to the chute body and from hollow sections 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. The cooling medium is used to hold the ceramic plates flowed through hollow profiles in lateral grooves of the Ceramic plates can be engaged, with the hollow profiles through the ceramic plates are largely covered and have a circular cross-section. The ceramic plates are between two in parallel, with one Intermediate distance on the chute body attached hollow profiles insertable.
Bei modernen Großhochöfen wird der Koksverbrauch durch Einblasen von Öl und in letzter Zeit in verstärktem Umfang durch Einblasen von Feinkohle gesenkt.In modern blast furnaces, the coke consumption is reduced Blowing in oil and lately in reinforced Volume reduced 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 cheap coal into the entire reduction process of Iron ores in the form of sinter or lump ore in the blast furnace shifted to higher temperatures, so the previous Methods for cooling the inner, for example Wall of the shaft furnace and especially the one above the No more pillar orbiting distributor chute is sufficient and therefore the service life of the Distribution chute is significantly reduced. A Reduction of the service life of the distribution chute mean downtimes in shorter periods, lower the Productivity and increase 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 cool the known distribution chute of a large blast furnace improve the specific pig iron production too increase and minimize downtimes.
Die Lösung der Aufgabe erfolgt durch die kennzeichnenden
Merkmale von Anspruch 1, die Unteransprüche
stellen eine vorteilhafte Ausgestaltung der Erfindung
dar.The problem is solved by the characteristic
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 for the production of the outer jacket the distributor chute is a copper-clad steel sheet used that in the thickness of almost equal parts a steel base plate and a copper plate consists.
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.Has proven to be an advantageous material for large blast furnaces explosive clad sheets with a sheet thickness of approx. 30 mm exposed using suitable sheet metal bending machines cold bent and into a semicircular Trough deformed. Before the deformation are in the copper-clad sheet in the copper side open cooling channels, which are meandering Longitudinal or transverse direction of the distributor chute axis are arranged.
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 channels can also be curved, elliptical or in another rounded shape or diamond, triangular or in another straightforward form in the copper sheet be arranged.
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 along the entire length with segments made of thin copper sheet, which are approx. 25% the wall thickness of the copper layer of the clad Sheet, weld pressure-tight and form thereby a closed cooling channel, so that a Controlled cooling (forced cooling) of the distribution chute on the side facing the hot side.
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-clad sheet is the Distribution chute with a layer on the outside ff material (spray compound or gate locking material) against Heat radiation and the aggressive top gases in addition protected.
Die Erfindung wird anhand von schematischen Ausführungsbeispielen näher erläutert.The invention is based on schematic Exemplary embodiments explained in more detail.
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) cold forming into a so-called half-shell or semicircular trough. In the copper sheet (7) of the copper-clad steel sheets (5) are cooling channels (8) incorporated, the cooling channels (14) in the longitudinal direction and the cooling channels (15) in the transverse direction Longitudinal axis of the distribution 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 from the outside via a cooling water supply line (3) fed to the cooling channels (8), the heated water is discharged through the cooling water discharge line (4) dissipated. To protect the distribution chute against the hot top gases rising from the blast furnace becomes a single continuous copper-clad Sheet steel (5) is used, the main dimensions of the Distribution chute is adapted.
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 Sheet steel (5) with the upper base plate (6) made of steel and the lower copper sheet (7) before cold working. In the copper sheet (7) according to Fig. 1st Cooling channels (8) incorporated, which are then continuous welded to a cooling duct cover (9) become. For fastening wear parts, not shown holes (12) in the copper-clad Sheet steel (5) introduced.
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 working of the copper-clad Steel sheet (5) to 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) is exposed four components together. Inside are by means of Fasteners (13) the wearing parts (11) in Bores (12) on the base plate (6) and copper plate (7) attached. The side of the copper-clad sheet (5) is used to protect against Corrosion and radiant heat with one ff material (10) lined.
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 are on each side of the central axis corresponding to the embodiment of Fig. 1 of the chute (1) two rows of cooling channels (8, 9) are arranged.
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). In the area of the bracket (2) Cooling water supply (3) or discharge lines (4) arranged, from which (3) the cooling water in forced circulation by the in the longitudinal direction (14) and transverse direction (15) to the longitudinal axis of the distribution chute (1) 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 Manifold chute axis
- 1515
- Kühlkanal in Querrichtung zur Verteiler-SchurrenachseCooling channel in the transverse direction Manifold chute axis
Claims (6)
- Distributor chute for a bell-less blast furnace charging installation comprising an outer casing, an internally mounted lining of abrasion-resistant material, and cooling water connections to the chute mount for supply of the lower part of the distributor chute with cooling water, characterised in that the outer casing of the distributor chute (1) is constructed as a copper-plated steel sheet (5) consisting of a base sheet (6) of steel and a copper sheet (7) and that cooling channels (8) are formed in the copper sheet (7) of the copper-plated steel sheet (5).
- Distributor chute according to claim 1, characterised in that the cooling channels (8) in the copper sheet (7) are provided with a cooling channel cover (9).
- Distributor chute according to claims 1 and 2, characterised in that the cooling channels (8) are arranged meander-like in the copper sheet (7), wherein the cooling channels extend in longitudinal direction and in transverse direction relative to the axis of the distributor chute (1).
- Distributor chute according to claims 1 and 2, characterised in that the cooling channels (8) are arranged in curved, elliptical or other rounded form in the copper sheet (7).
- Distributor chute according to claims 1 and 2, characterised in that the cooling channels (8) are arranged in rhombic, triangular or other rectilinear form in the copper sheet (7).
- Distributor chute according to claims 1 to 3, characterised in that refractory material (10) is applied externally on the copper-plated 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 EP0771880A1 (en) | 1997-05-07 |
| EP0771880B1 true 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) |
Families Citing this family (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 |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1476181A (en) * | 1966-04-15 | 1967-04-07 | Ts Nautchno I I Tchornoy Metal | Ingot mold for the continuous casting of metals, and method of manufacturing this mold |
| LU59207A1 (en) * | 1969-07-31 | 1969-12-10 | Wurth Anciens Ets Paul | |
| LU73021A1 (en) * | 1975-07-18 | 1976-03-02 | ||
| LU88396A1 (en) * | 1993-08-25 | 1995-03-01 | Wurth Paul Sa | Distribution chute for bulk material |
| LU88399A1 (en) * | 1993-09-01 | 1995-04-05 | 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 EP EP96112422A patent/EP0771880B1/en not_active Expired - Lifetime
- 1996-08-01 AT AT96112422T patent/ATE206468T1/en not_active IP Right Cessation
- 1996-08-01 PT PT96112422T patent/PT771880E/en unknown
- 1996-08-01 ES ES96112422T patent/ES2166419T3/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| ATE206468T1 (en) | 2001-10-15 |
| DE59607815D1 (en) | 2001-11-08 |
| EP0771880A1 (en) | 1997-05-07 |
| DE19540504C1 (en) | 1996-11-28 |
| PT771880E (en) | 2002-03-28 |
| ES2166419T3 (en) | 2002-04-16 |
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