EP2253916A1 - Metallurgical melt and treatment assembly - Google Patents

Metallurgical melt and treatment assembly Download PDF

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Publication number
EP2253916A1
EP2253916A1 EP09006813A EP09006813A EP2253916A1 EP 2253916 A1 EP2253916 A1 EP 2253916A1 EP 09006813 A EP09006813 A EP 09006813A EP 09006813 A EP09006813 A EP 09006813A EP 2253916 A1 EP2253916 A1 EP 2253916A1
Authority
EP
European Patent Office
Prior art keywords
gas
nozzles
gas purging
nozzle
molten metal
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
Application number
EP09006813A
Other languages
German (de)
French (fr)
Other versions
EP2253916B1 (en
Inventor
Bernhard Handle
Bojan Zivanovic
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Refractory Intellectual Property GmbH and Co KG
Original Assignee
Refractory Intellectual Property GmbH and Co KG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority to DE502009000332T priority Critical patent/DE502009000332D1/en
Application filed by Refractory Intellectual Property GmbH and Co KG filed Critical Refractory Intellectual Property GmbH and Co KG
Priority to ES09006813T priority patent/ES2357684T3/en
Priority to PL09006813T priority patent/PL2253916T3/en
Priority to EP09006813A priority patent/EP2253916B1/en
Priority to AT09006813T priority patent/ATE496267T1/en
Priority to KR1020117026026A priority patent/KR101322572B1/en
Priority to CA2760352A priority patent/CA2760352C/en
Priority to BRPI1011059A priority patent/BRPI1011059A2/en
Priority to PCT/EP2010/002467 priority patent/WO2010133283A1/en
Priority to JP2012511161A priority patent/JP5421455B2/en
Priority to AU2010251491A priority patent/AU2010251491B2/en
Priority to CN201080022275.5A priority patent/CN102428335B/en
Priority to PE2011001970A priority patent/PE20121144A1/en
Publication of EP2253916A1 publication Critical patent/EP2253916A1/en
Application granted granted Critical
Publication of EP2253916B1 publication Critical patent/EP2253916B1/en
Priority to CL2011002867A priority patent/CL2011002867A1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B7/00—Rotary-drum furnaces, i.e. horizontal or slightly inclined
    • F27B7/20—Details, accessories, or equipment peculiar to rotary-drum furnaces
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B15/00—Obtaining copper
    • C22B15/0026—Pyrometallurgy
    • C22B15/0028—Smelting or converting
    • C22B15/003—Bath smelting or converting
    • C22B15/0041—Bath smelting or converting in converters
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B15/00—Obtaining copper
    • C22B15/0026—Pyrometallurgy
    • C22B15/0028—Smelting or converting
    • C22B15/003—Bath smelting or converting
    • C22B15/0041—Bath smelting or converting in converters
    • C22B15/0043—Bath smelting or converting in converters in rotating converters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B3/00—Hearth-type furnaces, e.g. of reverberatory type; Tank furnaces
    • F27B3/10—Details, accessories, or equipment peculiar to hearth-type furnaces
    • F27B3/22—Arrangements of air or gas supply devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B7/00—Rotary-drum furnaces, i.e. horizontal or slightly inclined
    • F27B7/20—Details, accessories, or equipment peculiar to rotary-drum furnaces
    • F27B7/2075—Removing incrustations
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B7/00—Rotary-drum furnaces, i.e. horizontal or slightly inclined
    • F27B7/20—Details, accessories, or equipment peculiar to rotary-drum furnaces
    • F27B7/36—Arrangements of air or gas supply devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B7/00—Rotary-drum furnaces, i.e. horizontal or slightly inclined
    • F27B7/20—Details, accessories, or equipment peculiar to rotary-drum furnaces
    • F27B7/36—Arrangements of air or gas supply devices
    • F27B7/362—Introducing gas into the drum axially or through the wall
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D25/00—Devices or methods for removing incrustations, e.g. slag, metal deposits, dust; Devices or methods for preventing the adherence of slag
    • F27D25/008—Devices or methods for removing incrustations, e.g. slag, metal deposits, dust; Devices or methods for preventing the adherence of slag using fluids or gases, e.g. blowers, suction units
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D3/00—Charging; Discharging; Manipulation of charge
    • F27D3/16—Introducing a fluid jet or current into the charge
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D3/00—Charging; Discharging; Manipulation of charge
    • F27D3/18—Charging particulate material using a fluid carrier
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B9/00—General processes of refining or remelting of metals; Apparatus for electroslag or arc remelting of metals
    • C22B9/05—Refining by treating with gases, e.g. gas flushing also refining by means of a material generating gas in situ

Definitions

  • the invention relates to a metallurgical melting and treatment unit, in particular a substantially cylindrical vessel for receiving and treating a non-ferrous metal melt.
  • melt can penetrate into the nozzle.
  • chemical reactions can lead to the deposition of solids, for example deposits of magnetite (Fe 3 O 4 ).
  • a gradual "growth" of the process nozzles can occur if the free nozzle cross-section is reduced. This reduces the gas throughput per unit of time with an available gas pressure. The productivity decreases.
  • the invention is based on the object of providing a vessel for melting metal, for receiving and treating a molten metal, in particular a non-ferrous molten metal, in which the nozzle zone with the nozzles remains fully functional over long periods of time. As far as possible existing systems should be retrofitted.
  • FIGS. 1 and 2 show the converter in a position called "working position". Accordingly, the nozzle 10 extends in this position substantially horizontally and in a plane perpendicular to the also substantially horizontally oriented longitudinal axis LL of the converter.
  • the mouth area 10m slightly surmounted the refractory lining 14 (in the exemplary re-delivery shown here).
  • a plurality of such nozzles 10 are arranged on the longitudinal side of the converter at a distance from each other along an imaginary line, as shown schematically in FIG FIG. 1 shown.
  • the treatment gas here: air
  • the nozzles 10 which have an inner diameter of, for example 5 cm, in the melt 50, where it leaves the nozzle 10 in the form of relatively large bubbles 52 and rises upwards.
  • the separation of the bubbles from the nozzle takes place in the upper mouth region of the nozzle.
  • a flow of the melt 50 occurs, as indicated by the arrows in FIG FIG. 2 indicated.
  • the disadvantageous flow course of the melt in the nozzle orifice and the pressure of the melt acting on the nozzle orifice promote the penetration of melt into the nozzle and the formation of solid lugs 10a in the lower region of the nozzle orifice, as in FIG FIG. 2 indicated schematically.
  • gas leaving the gas purging devices 20 for example an inert gas, such as argon
  • the gas leaving the gas purging devices 20 flows against the nozzle orifice (s) 10m and is guided as close as possible in front of or past the nozzle orifices 10m.
  • the melt flow is advantageously influenced in such a way that the melt does not enter the nozzle orifice at all or only to a very small extent, and thus is no longer or only to a limited extent available for the formation of deposits.
  • the relatively small gas bubbles 54 introduced via the gas purging device 20 lead to a melt-gas mixture whose density is lower than that of the pure melt.
  • the process gas (air or air-oxygen mixture) at the same inlet pressure penetrate deeper into the melt, resulting in an improved distribution of the process gas.
  • the residence time of the air bubbles in the melt increases, so that overall a significantly improved reaction behavior between air bubbles 52 and melt sets and thus better utilization of the process gas is achieved.
  • each nozzle is assigned its own gas purging device, so that fine gas bubbles can be selectively guided into the muzzle region of an associated nozzle by a gas purging device.
  • a gas purging device can also be assigned to a group of nozzles.
  • FIG. 4 is such an embodiment (an inside view against the refractory lining 14) of a converter according to FIG. 1 shown in FIG. 4 however, in the design according to the invention with gas purging devices 20 below the nozzles 10.
  • each gas purging device 20 has a rectangular gas outlet side end face 20m.
  • the size of the gas purging devices 20 is such that the gas discharged from a gas purging device 20, for example nitrogen, can be selectively supplied to two nozzles 10 arranged above it.
  • the gas purging devices 20 may be formed with a different geometry, in particular in the area of the gas outlet-side end face and thus, for example, have a circular end face. Again, however, that, for example, a nozzle 10 then a gas purging device 20 can be assigned, but also a (larger) gas purging unit multiple nozzles 10th
  • the arrangement of the gas purging devices 20 is analogous to the nozzle row in FIG. 1 such that the gas outlet surfaces of the gas purging devices 20 are mounted along an imaginary straight line parallel to the axis of the converter. It is also possible to place the gas purging devices 20 at different heights in the refractory lining 14.
  • FIG. 3 shows that the gas purging devices 20 are otherwise installed similar to the nozzles 10 through the metal shell 12 and the refractory lining 14.
  • the gas purging devices 20 to direct as fine gas bubbles as possible in front of the mouth region of the nozzles 10 in order to influence the melt flow in such a way that penetration of the melt into the nozzle and deposits in the nozzle are avoided better utilization of the process gas is achieved.
  • the gas purging devices 20 may be formed, for example, with so-called undirected porosity.
  • An undirected porosity resembles a sponge-like structure, wherein the gas, depending on the pore structure, seeks an irregular path through the ceramic base material of the gas purging plug.
  • Such gas purging devices with undirected porosity are known and are therefore not further illustrated here.
  • the gas purgers 20 may also be formed with directional porosity.
  • the gas is passed through discrete gas channels with a targeted flow direction through the flushing element.
  • Combinations of directed and undirected porosity can also be formed within a gas purging device 20 or within a series of gas purging devices 20.
  • the process gas is the gas that is supplied via the nozzles 10.
  • the refractory wear is significantly reduced.
  • the penetration of melt into the nozzle orifice and the deposits at the nozzle orifice are significantly reduced.
  • the entire nozzle cross-section remains free for a long time without cleaning and the supply of process gas is much more constant than in the prior art. Downtimes of the unit are minimized.
  • the gas purging device 20 is a gas purging plug, which has a non-directional porosity throughout, wherein the gas (here: nitrogen) via a gas supply line 22 and a arranged between gas supply line 22 and porous refractory member 24 gas distribution chamber 26 is guided.
  • gas here: nitrogen
  • Such a gas purging plug has been state of the art for decades, but for other applications.
  • the gas outlet-side end face 20m of the gas purging device 20 runs in alignment with the inside of the refractory lining 14, but it can also project slightly into the molten metal 50. In any case, the gas outlet end face 20m is in direct contact with the melt 50 during the flushing operation.
  • the gas bubbles as they are to be introduced via the gas purging 20 into the molten metal 50, typically have bubble diameter ⁇ 10 mm.
  • the average diameter of the bubbles supplied via the nozzles 10 to the mean diameter of the bubbles supplied via the gas purging device 20 is usually from 10: 1 to 200: 1.
  • the shortest distance between nozzles 10 and associated Ga may be on the melt-facing side of the refractory lining, the shortest distance between nozzles 10 and associated Ga Why Stein 20 2 to 100 cm, for example 5 to 50 cm.
  • the angle ⁇ between the projection of the nozzle axis and the projection of the axis of the associated gas purging device on a plane perpendicular to the longitudinal axis L-L of the unit level may be 10 ° - 80 °, preferably 10 ° - 40 °.

Abstract

The unit has a set of injectors (10) extending through an outer metal casing (12) and an inner fire resistant lining (14) for injecting treatment gas i.e. air, on molten metal (50) over respective nozzle openings (10m). Gas flushing devices are arranged beneath the corresponding injectors for injecting the gas on the molten metal, such that the molten metal is raised over the lining and flows through the nozzle openings. The flushing devices have aligned or unaligned porosity, such that cavities with a diameter less than 10 mm are formed in the molten metal over the flushing devices.

Description

Die Erfindung betrifft ein metallurgisches Schmelz- und Behandlungsaggregat, im Besonderen ein im Wesentlichen zylinderförmiges Gefäß zur Aufnahme und Behandlung einer Nichteisen-Metallschmelze.The invention relates to a metallurgical melting and treatment unit, in particular a substantially cylindrical vessel for receiving and treating a non-ferrous metal melt.

Zu diesen metallurgischen Aggregaten/Gefäßen gehören insbesondere folgende:

  • Peirce-Smith-Konverter, Teniente Konverter, Noranda-Reaktor, Kupfer-Raffinationsofen.
These metallurgical aggregates / vessels include in particular the following:
  • Peirce-Smith converter, Teniente converter, Noranda reactor, copper refining furnace.

Der grundsätzliche Aufbau eines solchen Aggregats zum Aufschmelzen von Metall sowie zur Aufnahme und Behandlung einer Metallschmelze ist wie folgt:

  • Das Gefäß/der Ofen weist im Wesentlichen eine Zylinderform auf, wobei die Längsachse des Zylinders in der Funktionsstellung des Gefäßes im Wesentlichen horizontal verläuft. Für den Fall eines Peirce-Smith-Konverters ist dies in Figur 1 dargestellt.
  • Das Gefäß weist einen äußeren Metallmantel und eine innere feuerfeste Auskleidung auf.
  • Das Gefäß ist mit mehreren Düsen konfektioniert, die von außen durch den Metallmantel des Ofens und durch die innere feuerfeste Auskleidung bis in den eigentlichen Ofenraum geführt sind, um so ein Behandlungsgas wie Luft in die Metallschmelze eindüsen zu können.
  • Dabei sind die Düsen beziehungsweise die Düsenmündungen in Längsrichtung der Längsachse des Gefäßes im Abstand nebeneinander angeordnet, oder anders ausgedrückt: Dabei sind die Düsen entlang einer Mantellinie des Zylindermantels angeordnet, wobei die Mantellinie parallel zur Zylinderachse liegt. Die Achse der Düsen liegt meist in einer senkrecht zur Zylinderachse stehenden Ebene.
  • In einem der genannten Aggregate können bis zu hundert solcher Prozessdüsen angeordnet werden.
The basic structure of such an aggregate for melting metal and for receiving and treating a molten metal is as follows:
  • The vessel / oven has a substantially cylindrical shape, wherein the longitudinal axis of the cylinder in the functional position of the vessel is substantially horizontal. In the case of a Peirce-Smith converter this is in FIG. 1 shown.
  • The vessel has an outer metal shell and an inner refractory lining.
  • The vessel is assembled with a plurality of nozzles, which are guided from the outside through the metal jacket of the furnace and through the inner refractory lining into the actual furnace chamber so as to be able to inject a treatment gas such as air into the molten metal.
  • The nozzles or the nozzle orifices are arranged in the longitudinal direction of the longitudinal axis of the vessel at a distance next to each other, or in other words: The nozzles along a surface line of the cylinder jacket are arranged, wherein the surface line is parallel to the cylinder axis. The axis of the nozzles is usually in a plane perpendicular to the cylinder axis plane.
  • In one of the mentioned units, up to one hundred such process nozzles can be arranged.

Beispielsweise durch die Ausbildung eines nachteiligen Strömungsprofils der Schmelze im Bereich der Düsen, oder durch schwankenden Gasdruck kann Schmelze in die Düsen eindringen. Im Bereich der Düsenöffnungen/Düsenmündungen können chemische Reaktionen zur Ablagerung von Feststoffen führen, beispielsweise Ablagerungen von Magnetit (Fe3O4), Insoweit kann es zu einem sukzessiven "Zuwachsen" der Prozessdüsen kommen, wenn sich der freie Düsenquerschnitt reduziert. Damit verringert sich bei einem verfügbaren Gasdruck der Gasdurchsatz pro Zeiteinheit. Die Produktivität lässt nach.For example, by the formation of an adverse flow profile of the melt in the region of the nozzle, or by fluctuating gas pressure melt can penetrate into the nozzle. In the area of the nozzle openings / nozzle openings, chemical reactions can lead to the deposition of solids, for example deposits of magnetite (Fe 3 O 4 ). In that regard, a gradual "growth" of the process nozzles can occur if the free nozzle cross-section is reduced. This reduces the gas throughput per unit of time with an available gas pressure. The productivity decreases.

Eine Erhöhung des Gasdrucks durch Einsatz von Kompressoren ist nicht immer möglich.Increasing the gas pressure by using compressors is not always possible.

In diesem Zusammenhang ist es bekannt, die Düsen mit Hilfe einer StoßVorrichtung manuell oder mechanisch zu reinigen. Dabei wird der ursprüngliche Querschnitt für die Gaszufuhr wieder bereitgestellt. Dabei kann es jedoch zu einer Beschädigung der feuerfesten Auskleidung um die Düsenmündungen herum kommen und damit zu einem vorzeitigen Verschleiß in diesem Bereich.In this connection, it is known to manually or mechanically clean the nozzles by means of a push device. The original cross-section for the gas supply is provided again. However, it may damage the refractory lining to the Nozzle orifices come around and thus premature wear in this area.

Der Erfindung liegt insoweit die Aufgabe zu Grunde, ein Gefäß zum Aufschmelzen von Metall, zur Aufnahme und Behandlung einer Metallschmelze, insbesondere einer Nichteisen-Metallschmelze anzubieten, bei dem die Düsenzone mit den Düsen über längere Zeitintervalle voll funktionstüchtig bleibt. Dabei sollen möglichst auch vorhandene Anlagen nachrüstbar sein.The invention is based on the object of providing a vessel for melting metal, for receiving and treating a molten metal, in particular a non-ferrous molten metal, in which the nozzle zone with the nozzles remains fully functional over long periods of time. As far as possible existing systems should be retrofitted.

Zur Lösung dieser Aufgabe geht die Erfindung von folgender Erkenntnis aus:

  • Figur 2 zeigt einen Querschnitt durch einen Teil einer Wand eines Peirce-Smith-Konverters (gemäß Figur 1) im Düsenbereich, wobei hier eine Düse 10 zu erkennen ist, die sich von außen durch einen Metallmantel 12 und eine feuerfeste Auskleidung 14 bis in einen Bereich des Konverters erstreckt, in dem sich eine Metallschmelze 50 befindet.
To solve this problem, the invention proceeds from the following finding:
  • FIG. 2 shows a cross section through a part of a wall of a Peirce-Smith converter (according to FIG. 1 ) in the nozzle region, wherein here a nozzle 10 can be seen, which extends from the outside through a metal shell 12 and a refractory lining 14 into a region of the converter in which a molten metal 50 is located.

Die Figuren 1 und 2 zeigen den Konverter in einer Position, die als "Arbeitsstellung" bezeichnet wird. Demnach verläuft die Düse 10 in dieser Stellung im Wesentlichen horizontal und in einer Ebene senkrecht zu der ebenfalls im Wesentlichen horizontal ausgerichteten Längsachse L-L des Konverters. Der Mündungsbereich 10m überragt die feuerfeste Auskleidung 14 geringfügig (bei der hier dargestellten beispielhaften Neuzustellung).The FIGS. 1 and 2 show the converter in a position called "working position". Accordingly, the nozzle 10 extends in this position substantially horizontally and in a plane perpendicular to the also substantially horizontally oriented longitudinal axis LL of the converter. The mouth area 10m slightly surmounted the refractory lining 14 (in the exemplary re-delivery shown here).

Eine Vielzahl solcher Düsen 10 ist an der Längsseite des Konverters mit Abstand zueinander entlang einer gedachten Geraden angeordnet, wie schematisch in Figur 1 dargestellt.A plurality of such nozzles 10 are arranged on the longitudinal side of the converter at a distance from each other along an imaginary line, as shown schematically in FIG FIG. 1 shown.

Das Behandlungsgas (hier: Luft) wird über die Düsen 10, die einen Innendurchmesser von beispielsweise 5 cm aufweisen, in die Schmelze 50 eingebracht, wo es in Form relativ großer Blasen 52 die Düse 10 verlässt und nach oben aufsteigt. Die Ablösung der Blasen von der Düse erfolgt im oberen Mündungsbereich der Düse. Im Laufe des Behandlungsprozesses kommt es zur Ausbildung einer Strömung der Schmelze 50, wie durch die Pfeile in Figur 2 angedeutet. Der nachteilige Strömungsverlauf der Schmelze in Düsenmündungsnähe und der auf die Düsenmündung wirkende Druck der Schmelze fördern das Eindringen von Schmelze in die Düse sowie die Bildung von festen Ansätzen 10a im unteren Bereich der Düsenmündung, wie in Figur 2 schematisch angedeutet. Aufgrund der relativ großen Gasblasen ist die Grenzschicht zwischen der Gas- und Flüssigphase relativ klein. Zusätzlich ist die Verweildauer der großen Gasblasen in der Schmelze gering. Beide Faktoren führen zu einem geringen Nutzungsgrad der eingebrachten Luft. In der Praxis sind daher erhebliche Luftmengen über die Düsen in die Schmelze einzubringen, was jedoch lange Prozesszeiten und damit auch höhere Kosten bedeutet. Bei Verwendung von Luft mit erhöhtem Sauerstoffanteil kommt es zwar zur Verkürzung der Prozesszeiten, aber im Bereich der Düsenmündungen zu extremen Temperaturspitzen, wodurch der Verschleiß der feuerfesten Auskleidung 14 stark erhöht wird. Gleichzeitig wird dadurch die Gefahr von Infiltrationen in die feuerfeste Auskleidung 14 und/oder Ablagerungen 10a im Mündungsbereich 10m der Düsen 10 erhöht.The treatment gas (here: air) is introduced via the nozzles 10, which have an inner diameter of, for example 5 cm, in the melt 50, where it leaves the nozzle 10 in the form of relatively large bubbles 52 and rises upwards. The separation of the bubbles from the nozzle takes place in the upper mouth region of the nozzle. In the course of the treatment process, a flow of the melt 50 occurs, as indicated by the arrows in FIG FIG. 2 indicated. The disadvantageous flow course of the melt in the nozzle orifice and the pressure of the melt acting on the nozzle orifice promote the penetration of melt into the nozzle and the formation of solid lugs 10a in the lower region of the nozzle orifice, as in FIG FIG. 2 indicated schematically. Due to the relatively large gas bubbles, the boundary layer between the gas and liquid phase is relatively small. In addition, the residence time of the large gas bubbles in the melt is low. Both factors lead to a low degree of utilization of the introduced air. In practice, therefore, considerable quantities of air are to be introduced via the nozzles into the melt, which, however, means long process times and thus also higher costs. Although the use of air with an increased oxygen content leads to a shortening of the process times, but in the region of the nozzle orifices extreme temperature peaks, whereby the wear of the refractory lining 14 is greatly increased. At the same time, the risk of infiltration into the refractory lining 14 and / or deposits 10a in the mouth region 10m of the nozzles 10 is thereby increased.

Diese Nachteile lassen sich durch eine Ausbildung wie in Figur 3 dargestellt vermeiden. Während die Form, Anordnung und Zahl der Düsen 10 im Wesentlichen unverändert bleiben kann wird das Aggregat für die Metallschmelze erfindungsgemäß mit zusätzlichen Gasspüleinrichtungen 20 ausgerüstet, die in der Arbeits-/Funktionsstellung des Aggregates unterhalb der Düsen 10 angeordnet werden. Die Gasspüleinrichtungen 20 dienen dazu, ein Gas so in die Metallschmelze 50 einzubringen, dass es benachbart der feuerfesten Auskleidung aufsteigt und zwar so, dass es im weiteren Verlauf eine oder mehrere Düsenmündungen 10m umspült. "Umspült" bedeutet dabei, dass das aus den Gasspüleinrichtungen 20 austretende Gas (beispielsweise ein Inertgas, wie Argon) die Düsenmündung(en) 10m anströmt und dabei möglichst dicht vor oder an den Düsenmündungen 10m vorbeigeführt wird.These disadvantages can be explained by a training as in FIG. 3 avoided. While the shape, arrangement and number of the nozzles 10 can remain substantially unchanged, the aggregate for the molten metal according to the invention with additional gas purging 20 equipped, which are arranged in the working / functional position of the unit below the nozzles 10. The gas purging devices 20 serve to introduce a gas into the molten metal 50 so that it rises adjacent to the refractory lining, specifically in such a way that it flows around one or more nozzle orifices 10 m in the further course. In this case, "circulated" means that the gas leaving the gas purging devices 20 (for example an inert gas, such as argon) flows against the nozzle orifice (s) 10m and is guided as close as possible in front of or past the nozzle orifices 10m.

Dabei zeigt sich, dass das Auftreten von Ablagerungen in der Düse im Bereich der Düsenmündung vermieden bzw, stark reduziert wird. Das kontinuierliche Umspülen der Düsenmündung sorgt für die Ausbildung eines homogenen Geschwindigkeitsprofils in der Nähe der Düsenmündung. Die Schmelzenströmung wird in vorteilhafter Weise so beeinflusst, dass die Schmelze überhaupt nicht oder nur in sehr geringem Ausmaß in die Düsenmündung gelangt und damit dort nicht mehr bzw. nur in geringem Ausmaß zur Ausbildung von Ablagerungen zur Verfügung steht. Des Weiteren führen die relativ kleinen über die Gasspüleinrichtung 20 eingebrachten Gasblasen 54 zu einem Schmelze-Gasgemisch, dessen Dichte geringer ist als die der reinen Schmelze. Damit kann das Prozessgas (Luft bzw. Luft-Sauerstoffgemisch) bei gleichem Eingangsdruck tiefer in die Schmelze eindringen, was zu einer verbesserten Verteilung des Prozessgases führt. Dadurch nimmt auch die Verweilzeit der Luftblasen in der Schmelze zu, so dass sich insgesamt ein deutlich verbessertes Reaktionsverhalten zwischen Luftblasen 52 und Schmelze einstellt und somit eine bessere Ausnutzung des Prozessgases erreicht wird.This shows that the occurrence of deposits in the nozzle in the region of the nozzle orifice is avoided or greatly reduced. The continuous flushing of the nozzle orifice ensures the formation of a homogeneous velocity profile in the vicinity of the nozzle orifice. The melt flow is advantageously influenced in such a way that the melt does not enter the nozzle orifice at all or only to a very small extent, and thus is no longer or only to a limited extent available for the formation of deposits. Furthermore, the relatively small gas bubbles 54 introduced via the gas purging device 20 lead to a melt-gas mixture whose density is lower than that of the pure melt. Thus, the process gas (air or air-oxygen mixture) at the same inlet pressure penetrate deeper into the melt, resulting in an improved distribution of the process gas. As a result, the residence time of the air bubbles in the melt increases, so that overall a significantly improved reaction behavior between air bubbles 52 and melt sets and thus better utilization of the process gas is achieved.

In ihrer allgemeinsten Ausführungsform betrifft die Erfindung danach ein metallurgisches Schmelz- und Behandlungsaggregat mit folgenden Merkmalen:

  • Einer Zylinderform mit einer in einer Arbeitsstellung des Aggregats im Wesentlichen horizontal verlaufenden Längsachse,
  • einem äußeren Metallmantel,
  • einer inneren feuerfesten Auskleidung,
  • mehreren, von Außen durch den Metallmantel und die feuerfeste Auskleidung geführten Düsen zum Einbringen eines Behandlungsgases in die Metallschmelze über zugehörige Düsenmündungen,
  • die Düsen sind an der Längsseite des Aggregats (in Richtung der Längsachse des Aggregats) im Abstand nebeneinander angeordnet,
  • in der Arbeitsstellung des Aggregats sind unterhalb der Düsen eine oder mehrere Gasspüleinrichtungen vorgesehen, über die ein Gas so in die Metallschmelze einführbar ist, dass es der feuerfesten Auskleidung benachbart aufsteigt und dabei eine oder mehrere Düsenmündungen anströmt.
In its most general embodiment, the invention then relates to a metallurgical melting and treatment unit having the following features:
  • A cylindrical shape with a longitudinal axis extending substantially horizontally in a working position of the unit,
  • an outer metal shell,
  • an inner refractory lining,
  • a plurality of nozzles guided externally through the metal shell and the refractory lining for introducing a treatment gas into the molten metal via associated nozzle openings,
  • the nozzles are arranged on the longitudinal side of the unit (in the direction of the longitudinal axis of the unit) at a distance next to each other,
  • in the working position of the unit, one or more gas purging devices are provided below the nozzles, via which a gas is introduced into the molten metal so that it rises adjacent to the refractory lining and thereby flows one or more nozzle orifices.

Die Anordnung und Ausbildung der Düsen sowie der Gasspüleinrichtungen kann auf unterschiedliche Art und Weise erfolgen. Es wurde bereits darauf hingewiesen, dass bei bekannten Öfen der genannten Art die Düsenmündungen üblicherweise entlang einer gedachten Geraden nebeneinander liegen. Insbesondere für eine solche Düsenanordnung schlägt die Erfindung vor, unterhalb jeder Düse eine zugehörige Gasspüleinrichtung anzuordnen. Mit anderen Worten: Jeder Düse ist eine eigene Gasspüleinrichtung zugeordnet, so dass gezielt von einer Gasspüleinrichtung feine Gasblasen in den Mündungsbereich einer zugehörigen Düse geführt werden können.The arrangement and design of the nozzles and the gas purging can be done in different ways. It has already been pointed out that in known ovens of the type mentioned, the nozzle openings are usually adjacent to one another along an imaginary straight line. In particular, for such a nozzle arrangement, the invention proposes to arrange an associated gas purging device below each nozzle. In other words, each nozzle is assigned its own gas purging device, so that fine gas bubbles can be selectively guided into the muzzle region of an associated nozzle by a gas purging device.

Alternativ kann eine Gasspüleinrichtung auch einer Gruppe von Düsen zugeordnet werden.Alternatively, a gas purging device can also be assigned to a group of nozzles.

Dies bietet sich insbesondere dann an, wenn eine Gasspüleinrichtung gewählt wird, die eine gasauslassseitige Stirnfläche aufweist, die sich über einen größeren Flächenbereich erstreckt, beispielsweise eine Länge aufweist, die zwei oder drei nebeneinander angeordnete Düsen abdeckt.This is particularly suitable when a gas purging device is selected which has a gas outlet-side end face which extends over a larger surface area, for example has a length which covers two or three nozzles arranged next to one another.

In Figur 4 ist eine solche Ausführungsform (eine Ansicht von Innen gegen die feuerfeste Auskleidung 14) eines Konverters gemäß Figur 1 dargestellt, in Figur 4 jedoch in der erfindungsgemäßen Gestaltung mit Gasspüleinrichtungen 20 unterhalb der Düsen 10.In FIG. 4 is such an embodiment (an inside view against the refractory lining 14) of a converter according to FIG. 1 shown in FIG. 4 however, in the design according to the invention with gas purging devices 20 below the nozzles 10.

Zu erkennen ist die Anordnung von zehn Düsen 10 entlang einer horizontalen Reihe, wobei zwischen benachbarten Düsen 10 jeweils ein Abstand vorhanden ist.Evident is the arrangement of ten nozzles 10 along a horizontal row, wherein between adjacent nozzles 10 each have a distance.

Etwa einen Düsendurchmesser unterhalb der Düsenreihe sind sieben Gasspüleinrichtungen 20 zu erkennen, wobei jede Gasspüleinrichtung 20 eine rechteckige gasauslassseitige Stirnfläche 20m aufweist. Die Größe der Gasspüleinrichtungen 20 ist so, dass das aus einer Gasspüleinrichtung 20 abgegebene Gas, beispielsweise Stickstoff, zwei darüber angeordneten Düsen 10 gezielt zugeführt werden kann.About a nozzle diameter below the nozzle row seven gas purging devices 20 can be seen, each gas purging device 20 has a rectangular gas outlet side end face 20m. The size of the gas purging devices 20 is such that the gas discharged from a gas purging device 20, for example nitrogen, can be selectively supplied to two nozzles 10 arranged above it.

Selbstverständlich können die Gasspüleinrichtungen 20 mit anderer Geometrie, insbesondere im Bereich der gasauslassseitigen Stirnfläche ausgebildet werden und so beispielsweise eine kreisförmige Stirnfläche aufweisen, Auch hier gilt aber wieder, dass beispielsweise einer Düse 10 dann eine Gasspüleinrichtung 20 zugeordnet werden kann, aber auch eine (größere) Gasspüleinheit mehreren Düsen 10.Of course, the gas purging devices 20 may be formed with a different geometry, in particular in the area of the gas outlet-side end face and thus, for example, have a circular end face. Again, however, that, for example, a nozzle 10 then a gas purging device 20 can be assigned, but also a (larger) gas purging unit multiple nozzles 10th

Die Anordnung der Gasspüleinrichtungen 20 ist analog zur Düsenreihe in Figur 1 so, dass die Gas-Austrittsflächen der Gasspüleinrichtungen 20 entlang einer gedachten, parallel zur Achse des Konverters liegenden Geraden angebracht sind. Ebenso ist es möglich, die Gasspüleinrichtungen 20 höhenversetzt zueinander in der feuerfesten Ausmauerung 14 zu platzieren.The arrangement of the gas purging devices 20 is analogous to the nozzle row in FIG. 1 such that the gas outlet surfaces of the gas purging devices 20 are mounted along an imaginary straight line parallel to the axis of the converter. It is also possible to place the gas purging devices 20 at different heights in the refractory lining 14.

Figur 3 zeigt, dass die Gasspüleinrichtungen 20 im Übrigen ähnlich wie die Düsen 10 durch den Metallmantel 12 und die feuerfeste Auskleidung 14 eingebaut werden. FIG. 3 shows that the gas purging devices 20 are otherwise installed similar to the nozzles 10 through the metal shell 12 and the refractory lining 14.

Wie bereits ausgeführt, ist es Sinn und Zweck der Gasspüleinrichtungen 20, möglichst feine Gasblasen vor den Mündungsbereich der Düsen 10 zu leiten, um dort die Schmelzenströmung so zu beeinflussen, dass ein Eindringen der Schmelze in die Düse und Ablagerungen in der Düse vermieden werden sowie eine bessere Ausnutzung des Prozessgases erreicht wird.As already stated, it is the purpose of the gas purging devices 20 to direct as fine gas bubbles as possible in front of the mouth region of the nozzles 10 in order to influence the melt flow in such a way that penetration of the melt into the nozzle and deposits in the nozzle are avoided better utilization of the process gas is achieved.

Dazu können die Gasspüleinrichtungen 20 beispielsweise mit sogenannter ungerichteter Porosität ausgebildet werden. Eine ungerichtete Porosität ähnelt einem schwammartigen Aufbau, wobei das Gas sich je nach Porenstruktur einen unregelmäßigen Weg durch das keramische Basismaterial des Gasspülsteins sucht. Solche Gasspüleinrichtungen mit ungerichteter Porosität sind bekannt und werden deshalb hier nicht weiter dargestellt.For this purpose, the gas purging devices 20 may be formed, for example, with so-called undirected porosity. An undirected porosity resembles a sponge-like structure, wherein the gas, depending on the pore structure, seeks an irregular path through the ceramic base material of the gas purging plug. Such gas purging devices with undirected porosity are known and are therefore not further illustrated here.

Alternativ können die Gasspüleinrichtungen 20 auch mit gerichteter Porosität ausgebildet werden. Dabei wird das Gas über diskrete Gaskanäle mit gezielter Strömungsrichtung durch das Spülelement geleitet.Alternatively, the gas purgers 20 may also be formed with directional porosity. The gas is passed through discrete gas channels with a targeted flow direction through the flushing element.

Auch Kombinationen von gerichteter und ungerichteter Porosität können innerhalb einer Gasspüleinrichtung 20 beziehungsweise innerhalb einer Reihe von Gasspüleinrichtungen 20 ausgebildet werden.Combinations of directed and undirected porosity can also be formed within a gas purging device 20 or within a series of gas purging devices 20.

Auf diese Weise kann auch die Eindringtiefe des Prozessgases in die Schmelze 50 gezielt eingestellt werden. Das Prozessgas ist das Gas, das über die Düsen 10 zugeführt wird.In this way, the penetration depth of the process gas into the melt 50 can be adjusted specifically. The process gas is the gas that is supplied via the nozzles 10.

Auf Grund der erfindungsgemäßen Anordnung ergibt sich eine Verringerung der Temperaturspitzen und ein weitestgehend homogenes Temperaturprofil der Schmelze in der Umgebung der Düsenmündung.Due to the arrangement according to the invention results in a reduction of the temperature peaks and a largely homogeneous temperature profile of the melt in the vicinity of the nozzle orifice.

Der Feuerfestverschleiß wird deutlich reduziert. Das Eindringen von Schmelze in die Düsenmündung und die Ablagerungen an der Düsenmündung werden deutlich reduziert. Der gesamte Düsenquerschnitt bleibt über längere Zeit ohne Reinigungsaufwand frei und die Zufuhr von Prozessgas ist deutlich konstanter als im Stand der Technik. Stillstandzeiten des Aggregates werden minimiert.The refractory wear is significantly reduced. The penetration of melt into the nozzle orifice and the deposits at the nozzle orifice are significantly reduced. The entire nozzle cross-section remains free for a long time without cleaning and the supply of process gas is much more constant than in the prior art. Downtimes of the unit are minimized.

Kosten lassen sich parallel senken. Dies gilt auch vor dem Hintergrund der Anordnung zusätzlicher Gasspüleinrichtungen 20, da diese eine erhebliche Standzeit aufweisen und auch die Standzeit der Düsen 10 deutlich im Vergleich mit dem Stand der Technik verlängert wird.Costs can be reduced in parallel. This also applies against the background of the arrangement of additional gas purging devices 20, since they have a considerable service life and also the service life of the nozzles 10 is significantly increased in comparison with the prior art.

Bei der bereits beschriebenen horizontalen Anordnung der Düsen in Arbeitsstellung des Aggregates bietet es sich an, die Gasspüleinrichtungen 20 so anzuordnen, dass die Projektion der Längsachsen von Düsen 10 und Gasspüleinrichtungen 20 auf eine Ebene, senkrecht zur Längsachse L - L des Aggregats, in einem spitzen Winkel zueinander stehen, wie in Figur 3 dargestellt, wo der entsprechende Winkel mit α gekennzeichnet ist und circa 30° beträgt.In the already described horizontal arrangement of the nozzles in the working position of the unit, it makes sense to the gas purging 20 so that the projection of the longitudinal axes of nozzles 10 and gas purging 20 on a plane perpendicular to the longitudinal axis L - L of the unit, at an acute angle to each other, as in FIG. 3 represented where the corresponding angle is marked α and is approximately 30 °.

Üblicherweise sind die Düsen 10, ebenso wie die Gasspüleinrichtungen 20, im unteren Teil des Aggregats angeordnet, wenn sich dieses in der Arbeitsstellung befindet, wie sich aus den Darstellungen gemäß Figuren 1 bis 3 ergibt.Usually, the nozzles 10, as well as the gas purging devices 20, arranged in the lower part of the unit when this is in the working position, as is apparent from the illustrations according to FIGS. 1 to 3 results.

Die Gasspüleinrichtung 20 gemäß Figuren 3 und 4 ist ein Gasspülstein, der durchgehend eine ungerichtete Porosität aufweist, wobei das Gas (hier: Stickstoff) über eine Gaszuführleitung 22 und eine zwischen Gaszuführleitung 22 und porösem Feuerfestteil 24 angeordnete Gasverteilkammer 26 geführt wird. Ein solcher Gasspülstein ist seit Jahrzehnten Stand der Technik, jedoch für andere Anwendungszwecke.The gas purging device 20 according to Figures 3 and 4 is a gas purging plug, which has a non-directional porosity throughout, wherein the gas (here: nitrogen) via a gas supply line 22 and a arranged between gas supply line 22 and porous refractory member 24 gas distribution chamber 26 is guided. Such a gas purging plug has been state of the art for decades, but for other applications.

In der Darstellung gemäß Figur 3 verläuft die gasauslassseitige Stirnfläche 20m der Gasspüleinrichtung 20 fluchtend zur Innenseite der feuerfesten Auskleidung 14, sie kann aber auch geringfügig in die Metallschmelze 50 hineinragen. In jedem Fall steht die gasauslassseitige Stirnfläche 20m in unmittelbarem Kontakt mit der Schmelze 50 während des Spülvorgangs.In the illustration according to FIG. 3 the gas outlet-side end face 20m of the gas purging device 20 runs in alignment with the inside of the refractory lining 14, but it can also project slightly into the molten metal 50. In any case, the gas outlet end face 20m is in direct contact with the melt 50 during the flushing operation.

Soweit im Rahmen der Erfindung von großen beziehungsweise kleinen Gasblasen die Rede ist lassen sich diese insbesondere wie folgt quantitativ präzisieren:As far as in the context of the invention of large or small gas bubbles is mentioned, these can in particular be quantified as follows quantitatively:

Die Gasblasen, wie sie über die Gasspüleinrichtungen 20 in die Metallschmelze 50 eingeleitet werden sollen, weisen typischerweise Blasendurchmesser < 10 mm auf.The gas bubbles, as they are to be introduced via the gas purging 20 into the molten metal 50, typically have bubble diameter <10 mm.

Der mittlere Durchmesser der über die Düsen 10 zugeführten Blasen zu dem mittleren Durchmesser der über die Gasspüleinrichtung 20 zugeführten Blasen beträgt üblicherweise 10 : 1 bis 200 : 1.The average diameter of the bubbles supplied via the nozzles 10 to the mean diameter of the bubbles supplied via the gas purging device 20 is usually from 10: 1 to 200: 1.

Bei einem neu zugestellten Aggregat (wie in Figur 3) kann auf der der Schmelze zugewandten Seite der feuerfesten Auskleidung der kürzeste Abstand zwischen Düsen 10 und zugehörigen Gasspüleinrichtungen 20 2 bis 100 cm betragen, beispielsweise 5 bis 50 cm.For a newly delivered aggregate (as in FIG. 3 ) may be on the melt-facing side of the refractory lining, the shortest distance between nozzles 10 and associated Gaspüleinrichtungen 20 2 to 100 cm, for example 5 to 50 cm.

Der Winkel α zwischen der Projektion der Düsenachse und der Projektion der Achse der zugehörigen Gasspüleinrichtung auf eine zur Längsachse L-L des Aggregats senkrecht stehende Ebene kann 10° - 80°, bevorzugt 10° - 40° betragen.The angle α between the projection of the nozzle axis and the projection of the axis of the associated gas purging device on a plane perpendicular to the longitudinal axis L-L of the unit level may be 10 ° - 80 °, preferably 10 ° - 40 °.

Claims (11)

Metallurgisches Schmelz- und Behandlungsaggregat mit folgenden Merkmalen: 1.1einer Zylinderform mit einer in einer Arbeitsstellung des Aggregats im Wesentlichen horizontal verlaufenden Längsachse (L-L), 1.2 einem äußeren Metallmantel (12), 1.3 einer inneren feuerfesten Auskleidung (14), 1.4 mehreren, von außen durch den Metallmantel (12) und die feuerfeste Auskleidung (14) geführten Düsen (10) zum Einbringen eines Behandlungsgases in die Metallschmelze (50) über zugehörige Düsenmündungen (10m), 1.5 die Düsen (10) sind an der Längsseite des Aggregats im Abstand nebeneinander angeordnet, 1.6 in der Arbeitsstellung des Aggregats sind unterhalb der Düsen (10) eine oder mehrere Gasspüleinrichtungen (20) vorgesehen, über die ein Gas so in die Metallschmelze einführbar ist, dass es der feuerfesten Auskleidung benachbart aufsteigt und dabei eine oder mehrere Düsenmündungen (10m) anströmt. Metallurgical melting and treatment unit with the following features: 1.1a cylindrical shape with a longitudinal axis (LL) extending substantially horizontally in a working position of the aggregate, 1.2 an outer metal shell (12), 1.3 an inner refractory lining (14), 1.4 a plurality of nozzles (10) guided externally through the metal shell (12) and the refractory lining (14) for introducing a treatment gas into the molten metal (50) via associated nozzle openings (10m), 1.5 the nozzles (10) are arranged on the longitudinal side of the unit at a distance next to each other, 1.6 in the working position of the unit, one or more gas purging devices (20) are provided below the nozzles (10) via which a gas is introduced into the molten metal, that it rises adjacent to the refractory lining and thereby flows to one or more nozzle orifices (10m) , Aggregat nach Anspruch 1, bei dem die Düsenmündungen (10m) entlang einer gedachten Geraden nebeneinander angeordnet sind.An assembly according to claim 1, wherein the nozzle orifices (10m) are arranged side by side along an imaginary straight line. Aggregat nach Anspruch 1, bei dem unterhalb jeder Düse (10) eine zugehörige Gasspüleinrichtung (20) angeordnet ist.An assembly according to claim 1, wherein below each nozzle (10) an associated gas purging device (20) is arranged. Aggregat nach Anspruch 1, bei dem unterhalb einer Gruppe von Düsen (10) jeweils eine Gasspüleinrichtung (20) angeordnet ist.Unit according to Claim 1, in which a gas purging device (20) is arranged below each group of nozzles (10). Aggregat nach Anspruch 1, bei dem mindestens eine Gasspüleinrichtung (20) zumindest an ihrem gasauslassseitigen Endabschnitt eine ungerichtete Porosität aufweist.An aggregate according to claim 1, wherein at least one gas purging device (20) has a non-directional porosity at least at its gas outlet end section. Aggregat nach Anspruch 1, bei dem mindestens eine Gasspüleinrichtung (20) zumindest an ihrer gasauslassseitigen Stirnfläche (20m) einen Rechteckquerschnitt aufweist.Unit according to Claim 1, in which at least one gas purging device (20) has a rectangular cross-section at least on its gas-outlet-side end face (20m). Aggregat nach Anspruch 1, bei dem die Gasspüleinrichtungen (20) entlang einer gedachten Geraden nebeneinander angeordnet sind.An assembly according to claim 1, wherein the gas purging devices (20) are arranged side by side along an imaginary straight line. Aggregat nach Anspruch 1, bei dem die Gasspüleinrichtungen (20) von außen durch den Metallmantel (12) und die feuerfeste Auskleidung (14) verlaufen und ihre gasauslassseitige Stirnfläche (20m) in Arbeitsstellung des Aggregats gegen die Metallschmelze ansteht.An assembly according to claim 1, wherein the gas purging devices (20) run from the outside through the metal shell (12) and the refractory lining (14) and their gas outlet side end face (20m) is in the working position of the aggregate against the molten metal. Aggregat nach Anspruch 1, bei dem die Düsen (10) und Gasspüleinrichtungen (20) so zueinander angeordnet sind, dass zwischen ihren jeweiligen Längsachsen ein spitzer Winkel α ausgebildet wird.An assembly according to claim 1, wherein the nozzles (10) and gas purging devices (20) are arranged relative to each other such that an acute angle α is formed between their respective longitudinal axes. Aggregat nach Anspruch 1, bei dem die Düsen (10) in ihrer Funktionsposition im Wesentlichen horizontal verlaufen.An assembly according to claim 1, wherein the nozzles (10) are substantially horizontal in their operative position. Aggregat nach Anspruch 1, bei dem die Düsen (10) in ihrer Funktionsposition im unteren Teil des Aufnahme- und Behandlungsgefäßes verlaufen.Unit according to Claim 1, in which the nozzles (10) extend in their functional position in the lower part of the receiving and treatment vessel.
EP09006813A 2009-05-20 2009-05-20 Metallurgical melt and treatment assembly Active EP2253916B1 (en)

Priority Applications (14)

Application Number Priority Date Filing Date Title
ES09006813T ES2357684T3 (en) 2009-05-20 2009-05-20 METALLURGICAL FUSION AND TREATMENT EQUIPMENT.
PL09006813T PL2253916T3 (en) 2009-05-20 2009-05-20 Metallurgical melt and treatment assembly
EP09006813A EP2253916B1 (en) 2009-05-20 2009-05-20 Metallurgical melt and treatment assembly
AT09006813T ATE496267T1 (en) 2009-05-20 2009-05-20 METALLURGICAL MELTING AND TREATMENT UNIT
DE502009000332T DE502009000332D1 (en) 2009-05-20 2009-05-20 Metallurgical melting and treatment unit
JP2012511161A JP5421455B2 (en) 2009-05-20 2010-04-22 Metallurgical melting and processing unit
BRPI1011059A BRPI1011059A2 (en) 2009-05-20 2010-04-22 metallurgical melting and treatment unit
PCT/EP2010/002467 WO2010133283A1 (en) 2009-05-20 2010-04-22 Metallurgical melting and treatment unit
KR1020117026026A KR101322572B1 (en) 2009-05-20 2010-04-22 Metallurgical melting and treatment unit
AU2010251491A AU2010251491B2 (en) 2009-05-20 2010-04-22 Metallurgical melting and treatment unit
CN201080022275.5A CN102428335B (en) 2009-05-20 2010-04-22 Metallurgical Melt And Treatment Assembly
PE2011001970A PE20121144A1 (en) 2009-05-20 2010-04-22 METALLURGICAL EQUIPMENT FOR FUSION AND PROCESSING
CA2760352A CA2760352C (en) 2009-05-20 2010-04-22 Metallurgical melting and processing unit
CL2011002867A CL2011002867A1 (en) 2009-05-20 2011-11-14 Metallurgical melting and treating equipment, cylinder-shaped with a longitudinal axis, an outer metal casing, an inner refractory lining, longitudinally arranged nozzles to introduce a treatment gas into the metal fluid, and a gaseous rinsing device to introduce a gas .

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP09006813A EP2253916B1 (en) 2009-05-20 2009-05-20 Metallurgical melt and treatment assembly

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EP2253916A1 true EP2253916A1 (en) 2010-11-24
EP2253916B1 EP2253916B1 (en) 2011-01-19

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EP (1) EP2253916B1 (en)
JP (1) JP5421455B2 (en)
KR (1) KR101322572B1 (en)
CN (1) CN102428335B (en)
AT (1) ATE496267T1 (en)
AU (1) AU2010251491B2 (en)
BR (1) BRPI1011059A2 (en)
CA (1) CA2760352C (en)
CL (1) CL2011002867A1 (en)
DE (1) DE502009000332D1 (en)
ES (1) ES2357684T3 (en)
PE (1) PE20121144A1 (en)
PL (1) PL2253916T3 (en)
WO (1) WO2010133283A1 (en)

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Publication number Priority date Publication date Assignee Title
CL2013001568U1 (en) * 2013-05-31 2013-12-13 Shandong Fargyuan Non Ferrous Science And Technology Ltd Company A copper melting furnace for lower blown with enriched oxygen comprises a furnace body with an inner chamber and partition, at least one feed inlet, a smoke outlet, a slag outlet, a slag outlet, at least one side hole for spray guns, at least one bottom hole for spears, at least one oxygen lance and at least one spray gun.
PL2927331T3 (en) 2014-04-03 2017-05-31 Refractory Intellectual Property Gmbh & Co. Kg Receptacle for receiving a metal melt
EP3450575B1 (en) 2017-09-01 2020-02-26 Refractory Intellectual Property GmbH & Co. KG A method for detecting a predetermined wear of a refractory lining of a metallurgical vessel and a corresponding refractory lining

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US2432996A (en) * 1945-10-01 1947-12-23 Kennecott Copper Corp Apparatus for punching tuyeres of copper converters and the like
DE2521830A1 (en) * 1975-05-16 1976-11-25 Kloeckner Humboldt Deutz Ag METHOD AND DEVICE FOR THERMAL REFINING OF HIGHLY POLLUTED COPPER IN THE MELTED PHASE

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Publication number Priority date Publication date Assignee Title
US2696979A (en) * 1951-04-16 1954-12-14 Kennecott Copper Corp Automatic tuyere punching apparatus
KR100402016B1 (en) * 1999-11-25 2003-10-17 주식회사 포스코 Lance for blowing waste scum in blast furnace with closing prevention function
DE50306237D1 (en) * 2003-08-23 2007-02-15 Refractory Intellectual Prop PROCESS FOR PYROMETALLIC PRODUCTION OF COPPER IN A CONVERTER
US7371342B2 (en) 2004-05-06 2008-05-13 Corporation Nacional Del Cobre De Chile Method for unlocking nozzles of reactors
CN101344357A (en) * 2008-08-25 2009-01-14 中国瑞林工程技术有限公司 Rotary kiln and technique for processing composition brass or block shaped raw copper

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2432996A (en) * 1945-10-01 1947-12-23 Kennecott Copper Corp Apparatus for punching tuyeres of copper converters and the like
DE2521830A1 (en) * 1975-05-16 1976-11-25 Kloeckner Humboldt Deutz Ag METHOD AND DEVICE FOR THERMAL REFINING OF HIGHLY POLLUTED COPPER IN THE MELTED PHASE

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AU2010251491B2 (en) 2013-01-31
DE502009000332D1 (en) 2011-03-03
KR20120024577A (en) 2012-03-14
ATE496267T1 (en) 2011-02-15
CN102428335B (en) 2014-05-14
KR101322572B1 (en) 2013-10-28
BRPI1011059A2 (en) 2016-08-09
AU2010251491A1 (en) 2011-11-17
CL2011002867A1 (en) 2012-04-27
ES2357684T3 (en) 2011-04-28
WO2010133283A1 (en) 2010-11-25
PE20121144A1 (en) 2012-08-27
PL2253916T3 (en) 2011-05-31
CN102428335A (en) 2012-04-25
JP2012527595A (en) 2012-11-08
CA2760352C (en) 2014-02-11
JP5421455B2 (en) 2014-02-19
EP2253916B1 (en) 2011-01-19
CA2760352A1 (en) 2010-11-25

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