DE697114C - by reducing rich iron ores - Google Patents

by reducing rich iron ores

Info

Publication number
DE697114C
DE697114C DE1937K0145049 DEK0145049D DE697114C DE 697114 C DE697114 C DE 697114C DE 1937K0145049 DE1937K0145049 DE 1937K0145049 DE K0145049 D DEK0145049 D DE K0145049D DE 697114 C DE697114 C DE 697114C
Authority
DE
Germany
Prior art keywords
iron ores
heating wire
rich iron
reducing
furnace
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
DE1937K0145049
Other languages
German (de)
Inventor
Haruyuki Ashida
Kazuji Kusaka
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
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
Application filed by Individual filed Critical Individual
Priority to DE1937K0145049 priority Critical patent/DE697114C/en
Application granted granted Critical
Publication of DE697114C publication Critical patent/DE697114C/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B13/00—Making spongy iron or liquid steel, by direct processes
    • C21B13/08—Making spongy iron or liquid steel, by direct processes in rotary furnaces

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Muffle Furnaces And Rotary Kilns (AREA)

Description

Drehrohrofen zur unmittelbaren Gewinnung von Eisen durch Reduktion reicher Eisenerze Es ist bekannt, Eisen durch Reduktion reicher Eisenerze unmittelbar zu gewinnen. Zu diesem Zweck kann, wie ebenfalls an sich bekannt ist, ein Drehröhrofen angewendet werden, der aus einem Doppelrohr besteht.Rotary kiln for the direct extraction of iron through reduction rich iron ores It is known to produce iron by reducing rich iron ores directly to win. As is also known per se, a rotary tube furnace can be used for this purpose can be used, which consists of a double pipe.

Die Erfindung bezieht sich auf einen solchen Drehrohrofen und geht davon aus, eine elektrische Beheizung des Ofens vorzunehmen, Infolge der holen Temperaturen, auf die ein Heizdraht beim Betriebe des Ofens kommen muß, entsteht die Gefahr einer sehr schnellen Oxydation des Heizdrahtes. _ Gemäß der Erfindung wird einer solchen Oxydation dadurch entgegengewirkt, daß der elektrische Heizdraht nur das innere Rohr des Ofens an seinem äußeren Umfange umgibt und daß ein kleiner Teil des in den Ofen einzuführenden Reduktionsgases durch eine besondere Zuleitung in den Zwischenraum zwischen den beiden Rohren, in dem also der Heizdraht liegt, eingeführt wird. Durch die kleine, vom Hauptreduktionsstrom abgezweigte Gasmenge wird die Oxydation des elektrischen Heizdrahtes verhindert, so daß der Heizdraht bei Anwendung der Maßnahme nach der Erfindung eine erheblich längere Lebensdauer erhält. .The invention relates to such a rotary kiln and goes assume that the oven will be electrically heated, as a result of the higher temperatures, on which a heating wire must come when operating the furnace, there is a risk of one very rapid oxidation of the heating wire. _ According to the invention, such a Oxidation counteracted by the fact that the electric heating wire only the inner The tube of the furnace surrounds its outer circumference and that a small part of the in reducing gas to be introduced into the furnace through a special feed line into the space is inserted between the two tubes, in which the heating wire is located. By the small amount of gas diverted from the main reducing stream is responsible for the oxidation of the electrical heating wire prevented, so that the heating wire when applying the measure according to the invention has a significantly longer service life. .

Claims (1)

PATENTANSPRUCH: Aus einem Doppelrohr bestehender Drehrohrofen zur unmittelbaren Gewinnung von Eisen durch Reduktion reicher Eisenerze, dadurch gekennzeichnet, daß das innere Rohr an seinem äußeren Umfang mit .einem elektrischen Heizdraht versehen ist und daß ein kleiner Teil des in den Ofen einzuführenden Reduktionsgases durch eine besondere Zuleitung in den Zwischenraum zwischen den beiden Rohren, in dem der Heizdraht liegt, eingeführt wird.PATENT CLAIM: Rotary kiln consisting of a double tube for direct extraction of iron by reducing rich iron ores, characterized in that the inner tube is provided on its outer circumference with .einem electric heating wire and that a small part of the reducing gas to be introduced into the furnace is through a special feed line in the space between the two pipes in which the heating wire lies, is inserted.
DE1937K0145049 1937-01-08 1937-01-08 by reducing rich iron ores Expired DE697114C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE1937K0145049 DE697114C (en) 1937-01-08 1937-01-08 by reducing rich iron ores

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1937K0145049 DE697114C (en) 1937-01-08 1937-01-08 by reducing rich iron ores

Publications (1)

Publication Number Publication Date
DE697114C true DE697114C (en) 1940-10-19

Family

ID=7250815

Family Applications (1)

Application Number Title Priority Date Filing Date
DE1937K0145049 Expired DE697114C (en) 1937-01-08 1937-01-08 by reducing rich iron ores

Country Status (1)

Country Link
DE (1) DE697114C (en)

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