DE380444C - Furnace with gas and electric heating for reducing ores, especially iron ores - Google Patents

Furnace with gas and electric heating for reducing ores, especially iron ores

Info

Publication number
DE380444C
DE380444C DEH83302D DEH0083302D DE380444C DE 380444 C DE380444 C DE 380444C DE H83302 D DEH83302 D DE H83302D DE H0083302 D DEH0083302 D DE H0083302D DE 380444 C DE380444 C DE 380444C
Authority
DE
Germany
Prior art keywords
ores
furnace
gas
electric heating
iron
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
Application number
DEH83302D
Other languages
German (de)
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.)
Individual
Original Assignee
Individual
Publication date
Priority to DEH83302D priority Critical patent/DE380444C/en
Application granted granted Critical
Publication of DE380444C publication Critical patent/DE380444C/en
Expired legal-status Critical Current

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Classifications

    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21BMANUFACTURE OF IRON OR STEEL
    • C21B13/00Making spongy iron or liquid steel, by direct processes
    • C21B13/10Making spongy iron or liquid steel, by direct processes in hearth-type furnaces

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Vertical, Hearth, Or Arc Furnaces (AREA)

Description

Ofen mit Gas- und elektrischer Beheizung zum Reduzieren von Erzen, insbesondere von Eisenerzen. Gegenstand der Erfindung ist ein Ofen mit Gas- und elektrischer Beheizung zum Reduzieren von Erzen, insbesondere von Eisenerzen. Es ist bereits vorgeschlagen, Gas-und elektrische Beheizung in einem Ofen gleichzeitig anzuwenden, jedoch in der Weise, daß beide in einem und demselben Ofenraum zusammen wirken. Hierbei ist es aber nicht möglich, reduzierend zu arbeiten.Furnace with gas and electric heating to reduce ores, especially of iron ores. The invention relates to a furnace with gas and electrical heating for reducing ores, especially iron ores. It is already proposed gas and electric heating in one furnace at the same time to be used, but in such a way that both are together in one and the same furnace chamber works. In this case, however, it is not possible to work in a reducing manner.

Um diesen Erfolg zu erreichen, setzt sich der Ofen gemäß der Erfindung aus einem gewöhnlichen Flammofen und einem unmittelbar sich an diesen anschließenden elektrischen Ofen zusammen, dergestalt, daß das am Abzugsende des Flammofens aufgegebene Erz, z. B. Eisenerz, zunächst in dein Flammofen, der mit Gas- oder Kohlenstaubfeuerung betrieben wird, vorreduziert wird, um dann in dem elektrischen Herd vollständig reduziert zu werden, so daß hier einerseits die Schlacken vollkommen eisenfrei dauernd abfließen, anderseits das vollkommen reduzierte Eisen zeitweilig abgestochen werden kann.In order to achieve this success, the furnace according to the invention is set from an ordinary flame furnace and one directly adjoining it electric furnace together, such that the abandoned at the exhaust end of the flame furnace Ore, e.g. B. iron ore, first in your flame furnace, the one with gas or pulverized coal combustion is operated, is prereduced, in order then to be completely in the electric stove To be reduced, so that here on the one hand the slag is completely iron-free permanently flow off, on the other hand the completely reduced iron can be tapped temporarily can.

Die Zeichnung veranschaulicht die Erfindung in einem Ausführungsbeispiel: Abb. i zeigt den neuen Ofen im Langschnitt, während Abb. 2 einen (Querschnitt bzw. einen Grundriß dazu darstellt.The drawing illustrates the invention in an exemplary embodiment: Fig. I shows the new furnace in a long section, while Fig. 2 shows a (cross-section or represents a floor plan for it.

Der neue Reduktionsofen besteht aus dem Hauptherd i mit dein Gas- oder Kohlenstaubbrenner 2 und dein Gasabzug 3. Die Zuführung des zweckmäßig bereits glühenden oxvdischen Eisenerzes geschieht durch eine Chargiervorrichtung 4 am Abzugsende des Ofens. Der Hauptherd i steht in direkter Z'erbindung mit dein elektrischen Herd 5, durch dessen Gewölbe mehrere Elektroden 6 hindurchgeführt sind. Am Stirnende des elektrischen Ofens ist in Niveauhöhe des Schmelzbades 7 ein dauernd arbeitender Schlackenüberlauf 8 angeordnet und außerdem eine aussetzend wirkende Abstich- oder Entleerungsvorrichtung 9 für das Eisen.The new reduction furnace consists of the main hearth i with your gas or coal dust burner 2 and your gas exhaust 3. The supply of the suitably already glowing oxvdic iron ore is done by a charging device 4 at the exhaust end of the furnace. The main hearth i is in direct connection with your electric hearth 5, through the vault of which several electrodes 6 are passed. At the front end of the electric furnace, at the level of the molten bath 7, a continuously operating slag overflow 8 is arranged and also an intermittent tapping or emptying device 9 for the iron.

Die Arbeitsweise des Ofens ist die folgende: das Erz wird ununterbrochen dem Ofen zugeführt und in dem Flammofen i niedergeschmolzen, wobei das Eisen in das Metallbad geht, während die noch oxvdischen Teile im Schlackenbad verbleiben. Diese Schlacken werden nun durch das dauernd nachfallende Erz allmählich weiter vorgeschoben und gelangen so in immer heißere Zonen rle,# Flammofens i, wobei sie gleichzeitig durch die CO-Reaktion durch den Kohlenstoffgehalt des Eisenbades, der zweckmäßig durch eine besondere Vorrichtung dauernd erneuert wird, größtenteils zu Eisen reduziert werden. Die Schlakken gelangen dann in den elektrischen Herd 5, wo die Reduktion schnell beendigt ist, so daß die eisenfreie Schlacke bei 8 dauernd abfließen kann, während das reine Eisen zeitweilig bei 9 entleert wird.The operation of the furnace is as follows: the ore becomes uninterrupted fed to the furnace and melted down in the flame furnace i, the iron in the metal bath goes, while the still oxidic parts remain in the slag bath. These slags are now gradually widening due to the constantly falling ore advanced and so get into ever hotter zones rle, # Flammofens i, whereby they at the same time through the CO reaction through the carbon content of the iron bath, the is expediently constantly renewed by a special device, for the most part be reduced to iron. The slugs then get into the electric stove 5, where the reduction is quickly completed, so that the iron-free slag at 8 lasts can flow out, while the pure iron is temporarily emptied at 9.

Der Ofen ist, wie aus der vorstehenden Beschreibung sich ergibt, in erster Linie für die Reduzierung von Eisenerzen bestimmt, kann aber ebensogut auch zur Reduzierung anderer Erze verwendet werden.As can be seen from the above description, the furnace is in primarily intended for the reduction of iron ores, but it can just as well used to reduce other ores.

Claims (1)

PATENT-ANSPRUCII: Ofen mit Gas- und elektrischer Beheizung zum Reduzieren von Erzen, insbesondere von Eisenerzen, gekennzeichnet durch die unmittelbare Verbindung eines flammenbeheizten Vorreduktionsherdes mit einem elektrisch beheizten N achreduktionsherd, welche von dem flüssigen Reduktionksprodukt kontinuierlich durchflossen werden, das dabei einer dauernd steigenden Temperatur ausgesetzt wird.PATENT-ANSPRUCII: Oven with gas and electric heating to reduce of ores, especially iron ores, characterized by the direct connection a flame-heated pre-reduction cooker with an electrically heated post-reduction cooker, which are continuously flowed through by the liquid reduction product, which is exposed to a continuously increasing temperature.
DEH83302D Furnace with gas and electric heating for reducing ores, especially iron ores Expired DE380444C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEH83302D DE380444C (en) Furnace with gas and electric heating for reducing ores, especially iron ores

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEH83302D DE380444C (en) Furnace with gas and electric heating for reducing ores, especially iron ores

Publications (1)

Publication Number Publication Date
DE380444C true DE380444C (en) 1923-09-07

Family

ID=7163990

Family Applications (1)

Application Number Title Priority Date Filing Date
DEH83302D Expired DE380444C (en) Furnace with gas and electric heating for reducing ores, especially iron ores

Country Status (1)

Country Link
DE (1) DE380444C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1263795B (en) * 1956-02-03 1968-03-21 Friedrich Kocks Dr Ing Process for producing iron and steel directly from ores

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1263795B (en) * 1956-02-03 1968-03-21 Friedrich Kocks Dr Ing Process for producing iron and steel directly from ores

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