DE529806C - Manufacture of iron-free chromium chloride - Google Patents

Manufacture of iron-free chromium chloride

Info

Publication number
DE529806C
DE529806C DEI29919D DEI0029919D DE529806C DE 529806 C DE529806 C DE 529806C DE I29919 D DEI29919 D DE I29919D DE I0029919 D DEI0029919 D DE I0029919D DE 529806 C DE529806 C DE 529806C
Authority
DE
Germany
Prior art keywords
iron
chromium chloride
manufacture
free chromium
chloride
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
DEI29919D
Other languages
German (de)
Inventor
Dr Johannes Brode
Dr Carl Wurster
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.)
IG Farbenindustrie AG
Original Assignee
IG Farbenindustrie AG
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 IG Farbenindustrie AG filed Critical IG Farbenindustrie AG
Priority to DEI29919D priority Critical patent/DE529806C/en
Application granted granted Critical
Publication of DE529806C publication Critical patent/DE529806C/en
Expired legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01GCOMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
    • C01G37/00Compounds of chromium
    • C01G37/04Chromium halides

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Inorganic Compounds Of Heavy Metals (AREA)

Description

Herstellung von eisenfreiem Chromchlorid Gegenstand des Patents 514571 ist ein Verfahren zur Darstellung von eisenfreiem Chromchlorid aus Ferrochrom durch Einwirken von Chlor bei Temperaturen von 3oo bis 6oo° unter Ausnutzung der Reaktionswärme und gegebenenfalls unter Zusatz von Reduktionsmitteln.Manufacture of iron-free chromium chloride The subject of patent 514571 is a process for the preparation of iron-free chromium chloride from ferrochrome by the action of chlorine at temperatures from 300 to 600 ° using the heat of reaction and, if necessary, with the addition of reducing agents.

Es wurde nun in weiterer Bearbeitung dieses Verfahrens gefunden, daß man auch bei Temperaturen über 6oo° arbeiten kann.It has now been found in further processing of this process that you can also work at temperatures above 600 °.

Die bei dem Prozeß auftretende Wärme ist so groß, daß Temperaturen von über 6oo° ohne jede äußere Wärmezufuhr erreicht werden. Man kann die Temperatur bis nahe an den Sublimationspunkt des Chromchlorids (85o°) ansteigen lassen, ohne daß nennenswerte Mengen Chromchlorid mit dem Eisenchlorid absublimieren. Sollte die Temperatur bei der Reaktion höher ansteigen, so ist durch eine Kondensation mit entsprechender Kühlung eine Trennung des übersublimierten Chromchlorids vom Eisenchlorid leicht möglich.The heat generated in the process is so great that temperatures of over 600 ° can be achieved without any external heat input. You can get the temperature Allow to rise to near the sublimation point of the chromium chloride (85o °) without that significant amounts of chromium chloride sublimate with the iron chloride. Should If the temperature rises higher during the reaction, it is due to a condensation with appropriate cooling, a separation of the oversublimated chromium chloride from Iron chloride easily possible.

Beispiel In einem eisernen, innen mit Silikasteinen ausgemauerten und zwischen Ausmauerung und Eisenmantel isolierten Drehrohrofen, der auf 400° aufgeheizt ist, werden pro Stunde durch eine Schnecke 5o kg feinstickiges Ferrochrom, das 6o% Cr und 8% C enthält, eingefüllt, während am anderen Ende des Ofens stündlich ein Gemisch von 140 kg Chlor .(in Form eines Abgases mit 9.2% Cl und 8 C02) und zoo 1 Kohlenoxyeingeblasen werden. Die Temperatur ,in dem Ofen steigt im Verlaufe der Reaktion infolge der von dieser gelieferten Wärme auf etwa 75o° an iund hält sich ohne jede Nachheizung auf dieser Höhe. Am unteren Ende des Ofens werden in kontinuierlichem Betrieb stündlich etwa 70 kg kohlenstoffhaltiges Chromchlorid ausgetragen, das im Durchschnitt o,a9olo Fe203 enthält. Eine Zersetzung oder Verflüchtigung des gebildeten Chromchlorids tritt bei der genannten Temperatur nicht ein.Example In an iron rotary kiln, lined with silica bricks and insulated between the lining and the iron jacket, which is heated to 400 °, a screw fills 50 kg of fine-nitrogen ferrochrome, which contains 60% Cr and 8% C, per hour, while the other At the end of the furnace, an hourly mixture of 140 kg of chlorine (in the form of an exhaust gas with 9.2% Cl and 8 CO 2) and zoo 1 of carbon oxy-gen are blown in. In the course of the reaction, the temperature in the furnace rises to about 750 ° as a result of the heat it supplies, and remains at this level without any additional heating. At the lower end of the furnace, about 70 kg of carbonaceous chromium chloride per hour are discharged in continuous operation, which contains an average of 0.1% Fe 2 O 3. The chromium chloride formed does not decompose or volatilize at the specified temperature.

Durch einen Stutzen am oberen Teil des Ofens entweichen die Eisenchloriddämpfe, die in einer Sublimationskammer aufgefangen werden. Es werden dabei pro Stunde etwa 3o kg wasserfreies Eisenchlorid erhalten, die durch o,46% Cr203 in Form von CrC13 verunreinigt sind.The iron chloride vapors escape through a nozzle at the top of the furnace, which are collected in a sublimation chamber. It will be about per hour 3o kg of anhydrous ferric chloride obtained, which was replaced by 0.46% Cr203 in the form of CrC13 are contaminated.

Claims (1)

PATENTANSPRUCH: Herstellung von eisenfreiem Chromchlorid aus Ferrochrom nach Patent 514 5_7I, dadurch gekennzeichnet, daß man bei Temperaturen über 6oo° arbeitet.PATENT CLAIM: Manufacture of iron-free chromium chloride from ferrochrome according to patent 514 5_7I, characterized in that at temperatures above 6oo ° is working.
DEI29919D 1927-01-01 1927-01-01 Manufacture of iron-free chromium chloride Expired DE529806C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEI29919D DE529806C (en) 1927-01-01 1927-01-01 Manufacture of iron-free chromium chloride

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEI29919D DE529806C (en) 1927-01-01 1927-01-01 Manufacture of iron-free chromium chloride

Publications (1)

Publication Number Publication Date
DE529806C true DE529806C (en) 1931-07-17

Family

ID=7187462

Family Applications (1)

Application Number Title Priority Date Filing Date
DEI29919D Expired DE529806C (en) 1927-01-01 1927-01-01 Manufacture of iron-free chromium chloride

Country Status (1)

Country Link
DE (1) DE529806C (en)

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