DE2934255A1 - Iron mfr. from iron oxide(s) - where spent active carbon or charcoal is used as inexpensive reducing agent replacing coke - Google Patents

Iron mfr. from iron oxide(s) - where spent active carbon or charcoal is used as inexpensive reducing agent replacing coke

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Publication number
DE2934255A1
DE2934255A1 DE19792934255 DE2934255A DE2934255A1 DE 2934255 A1 DE2934255 A1 DE 2934255A1 DE 19792934255 DE19792934255 DE 19792934255 DE 2934255 A DE2934255 A DE 2934255A DE 2934255 A1 DE2934255 A1 DE 2934255A1
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DE
Germany
Prior art keywords
iron
mfr
spent
charcoal
already
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.)
Withdrawn
Application number
DE19792934255
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German (de)
Inventor
Fritz Dr.Rer.Nat. 79639 Grenzach-Wyhlen Mindermann
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 DE19792934255 priority Critical patent/DE2934255A1/en
Publication of DE2934255A1 publication Critical patent/DE2934255A1/en
Withdrawn legal-status Critical Current

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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
    • C21B13/0066—Preliminary conditioning of the solid carbonaceous reductant
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/20—Recycling

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Solid Fuels And Fuel-Associated Substances (AREA)

Abstract

Parent patent described the mfr. of iron by reducing iron oxides with carbonaceous waste, e.g. sewage sludge. In this addn. the waste consists of spent porous carbon which has already been used as an absorption mass and is charged with various impurities; and redn. of the oxides pref. occurs at 750-1200 deg.C. The pref. waste consists of (a) active charcoal made from wood scrap, and spent by use in absorption processes; or (b) spent porous carbon initially obtd. by the coking of mineral- or brown-coals. The invention provides another inexpensive waste material which can be used as a replacement for coke in blast furnaces or in direct redn. methods of iron mfr.

Description

Herstellung von Eisen aus Eisenoxyd und gebauter Aktiv- Manufacture of iron from iron oxide and built active

kohle usw. coal etc.

Wie die Hauptanmeldung, betrifft die Erfindung die erstellung von Eisen aus Eisenoxyd mit einem kohlenstoffhaltigen Abfallprodukt.Like the main application, the invention relates to the creation of Iron from iron oxide with a carbon-containing waste product.

Es wurde nun gefunden, daß auch anstelle der durch Verkoken von Klärschlamm gewonnenen Aktivkohle (siehe Anspruch 2 in der Hauptanmeldung) handelsübliche Aktivkohle, d.h. Holzkohle, verwendet werden kann, die entsprechend ihrer eigentlichen Bestimmung bereits zum Reinigen von Flüssigkeiten oder Gasen gebraucht wurde, d.h. mit unerwünschten Verunreinigungen beladen ist.It has now been found that instead of sewage sludge by coking obtained activated carbon (see claim 2 in the main application) commercial activated carbon, i.e. charcoal, which can be used according to its real purpose has already been used to clean liquids or gases, i.e. with undesired Is loaded with impurities.

Ebenso kann Koks, der aus Steinkohle, vorzugsweise aber Braunkohle, auf üblichem Wege gewonnen wurde und ebenfalls zu Absorptionszwecken eingesetzt war, zur Herstellung von Eisen aus Eisen oxyd, verwendet werden. Andere Kohlenstoffträger, wie z.B. neuer Koks können in Kombination mit den oben genannten gebrauchten Materialien eingesetzt werden.Likewise, coke, which is made from hard coal, but preferably lignite, was obtained in the usual way and also used for absorption purposes was used for the production of iron from iron oxide. Other carbon carriers, such as new coke can be used in combination with the above mentioned materials can be used.

Die Umsetzung von Koks mit Eisenoxyd ist sowohl im Hochofen wie bei der sogenannten Direktreduktion eine so bekannte Technologie, daß darauf nicht näher eingegangen werden muß.The implementation of coke with iron oxide is both in the blast furnace as in the so-called direct reduction is such a well-known technology that no further details can be found on it must be received.

Bisher wurden dabei nur neue, ungebrau$hte Kohlenstoffträger eingesetzt, die entsprechend teuer sind. Gebrauchte Aktivkohle, bzw. bereits zu Absorptionszwecken eingesetzter Koks sind Abfallprodukte, deren Beseitigung oder Regenerierung zum Teil erhebliche Kosten verursacht. (Eine bekannte rcegenerationsmethode ist das Ausdämpfen; dabei werden die absorbierten Verunreinigungen mehr oder weniger vollständig ausgewaschen. Der überschüssige Dampf und das Kondensat müssen dann aber noch gereinigt werden).So far only new, unused carbon carriers have been used, which are correspondingly expensive. Used activated carbon or already for absorption purposes Used coke are waste products, their disposal or regeneration for Partly causes considerable costs. (A well-known generation method is this Steaming out; the absorbed impurities become more or less complete washed out. The excess steam and the condensate then have to be cleaned will).

Durch die oben beschriebene Erfindung können die Absorptionsmittel incl. der absorbierten Verunreinigungen einer nützlichen Verwertung zugeführt werden. Die Verunreinigungen verhalten sich dabei entweder inert oder sie tragen selbst, soweit sie Kohlenstoff enthalten, zum Reduktionsvorgang bei und helfen so zusätzlich Brennstoff zu sparen. - Somit ist das erfindungsgemäße Verfahren ein echtes Recycling von Kohlenstoff und daher eine energiesparende und umweltfreundliche Technologie.By the invention described above, the absorbent incl. the absorbed impurities can be used for useful purposes. The impurities either behave inertly or they carry themselves, as far as they contain carbon, contribute to the reduction process and thus help additionally To save fuel. - Thus, the method according to the invention is a real recycling of carbon and therefore an energy-saving and environmentally friendly technology.

Claims (1)

Ansprüche 1. Verfahren zur verstellung on Eisen aus Eisenoxyden und kohlenstoffhaltigen Reduktionsmitteln, d.g., daß poröse Kohlenstoff verwendet wird, der bereits als Absorptionsmasse gebraucht wurde, d.h. mit diversen Verunreinigungen beladen ist0 2. Verfahren gern. Anspruch 1, d.g., daß die Reduktion bei 750- 1200 °C durchgeführt wird.Claims 1. A method for adjusting iron from iron oxides and carbonaceous reducing agents, i.e. that porous carbon is used, which has already been used as an absorption mass, i.e. with various impurities loaded is0 2nd procedure gladly. Claim 1, i.e. that the reduction is 750-1200 ° C is carried out. 3. Verfahren gem. Ansprüche 1 und 2, d.g., daß der verwendete poröse Kohlenstoff Aktivkohle ist, die aus Holz incl. holzhaltigen Abfällen hergestellt und bereits zu Absorptionszwecken gebraucht wurde.3. The method according to. Claims 1 and 2, d.g. that the porous used Carbon is activated charcoal made from wood including wood-containing waste and has already been used for absorption purposes. 4. Verfahren gem. Ansprüche 1 und 2, d.g., daß der verwendete poröse Kohlenstoff durch Verkoken von Steinkohle oder Braunkohle gewonnen wurde (sog. Koks) und bereits zu Absorptionszwecken gebraucht wurde.4. The method according to. Claims 1 and 2, d.g. that the porous used Carbon was obtained by coking hard coal or lignite (so-called coke) and has already been used for absorption purposes.
DE19792934255 1979-08-24 1979-08-24 Iron mfr. from iron oxide(s) - where spent active carbon or charcoal is used as inexpensive reducing agent replacing coke Withdrawn DE2934255A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19792934255 DE2934255A1 (en) 1979-08-24 1979-08-24 Iron mfr. from iron oxide(s) - where spent active carbon or charcoal is used as inexpensive reducing agent replacing coke

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19792934255 DE2934255A1 (en) 1979-08-24 1979-08-24 Iron mfr. from iron oxide(s) - where spent active carbon or charcoal is used as inexpensive reducing agent replacing coke

Publications (1)

Publication Number Publication Date
DE2934255A1 true DE2934255A1 (en) 1981-03-26

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Family Applications (1)

Application Number Title Priority Date Filing Date
DE19792934255 Withdrawn DE2934255A1 (en) 1979-08-24 1979-08-24 Iron mfr. from iron oxide(s) - where spent active carbon or charcoal is used as inexpensive reducing agent replacing coke

Country Status (1)

Country Link
DE (1) DE2934255A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2521592A1 (en) * 1982-02-12 1983-08-19 Armines PROCESS FOR THE EXECUTION OF REDUCING REACTIONS IN METALLURGY AND PRODUCT USED

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
NICHTS-ERMITTELT *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2521592A1 (en) * 1982-02-12 1983-08-19 Armines PROCESS FOR THE EXECUTION OF REDUCING REACTIONS IN METALLURGY AND PRODUCT USED

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