DE902732C - Process for the production of ferrites suitable for magnetic purposes - Google Patents

Process for the production of ferrites suitable for magnetic purposes

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Publication number
DE902732C
DE902732C DEB17552A DEB0017552A DE902732C DE 902732 C DE902732 C DE 902732C DE B17552 A DEB17552 A DE B17552A DE B0017552 A DEB0017552 A DE B0017552A DE 902732 C DE902732 C DE 902732C
Authority
DE
Germany
Prior art keywords
melt
ferrite
heat
ferrites
production
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
DEB17552A
Other languages
German (de)
Inventor
Dr Friedrich Bergamann
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.)
BASF SE
Original Assignee
BASF SE
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 BASF SE filed Critical BASF SE
Priority to DEB17552A priority Critical patent/DE902732C/en
Application granted granted Critical
Publication of DE902732C publication Critical patent/DE902732C/en
Expired legal-status Critical Current

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Classifications

    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/01Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
    • C04B35/26Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on ferrites

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Compounds Of Iron (AREA)

Description

Verfahren zur Herstellung von für magnetische Zwecke geeigneten Ferriten Gegenstand des Patents 872 203 ist ein Verfahren zur Herstellung von insbesondere für magnetische Zwecke geeigneten Ferriten, nach dem man Ferrite in technisch einfacher Weise herstellen kann, indem man die Metalle, deren Oxyde den Ferrit bilden, in dem für die Bildung des gewünschten Ferrits erforderlichen Mengenverhältnis durch Einwirkung von Sauerstoff bei Schmelztemperatur in die Oxyde überführt. Man kann dabei entweder alle Metalle, deren Oxyde den Ferrit bilden, oxydierend einschmelzen oder auch nur einen Teil von ihnen, wobei man dann die anderen Bestandteile des Ferrits als Oxyde oder als Oxyd liefernde Verbindungen beim oxydierenden Schmelzen der Metalle zusetzt.Process for the production of ferrites suitable for magnetic purposes The subject of patent 872 203 is a process for the production of ferrites suitable in particular for magnetic purposes, according to which ferrites can be produced in a technically simple manner by converting the metals whose oxides form the ferrite into The ratio of quantities required for the formation of the desired ferrite is converted into the oxides by the action of oxygen at the melting temperature. You can either oxidize all the metals whose oxides form the ferrite, or only some of them, in which case the other constituents of the ferrite are added as oxides or as oxide-providing compounds during the oxidizing melting of the metals.

Es wurde nun gefunden, daß man Ferrite mit höherer Permeabilität als nach dem Verfahren gemäß dem Hauptpatent erhalten kann, wenn man die Überführung der entsprechenden Metalle in die Oxyde unter Wärmezufuhr von außen vornimmt. Diese Wärmezufuhr von außen kann z. B. durch einen elektrischen Lichtbogen bewirkt werden, wobei man den Lichtbogen gegen die Oberfläche des Tiegelinhalts brennen läßt, oder durch elektrische Widerstandsheizung, wobei man zweckmäßig den Tiegelinhalt als Widerstand benutzt und die beim Stromdurchgang entstehende Stromwärme ausnutzt. Beispiel Zur Herstellung eines Nickel-Zink-Mangan-Ferrits wird in einen wassergekühlten Eisentiegel ein pulveriges Gemisch aus 10,5 Teilen (Gewichtsteilen) Eisenpulver, o,1 Teil Nickelpulver, 0,2 Teilen Zinkpulver und o,25 Teilen Braunstein eingefüllt. Auf die Oberfläche dieser Füllung läßt man, erforderlicherweise aus mehreren Rohren, Sauerstoff aufströmen und zündet den Tiegelinhalt durch kurzes Berühren mit einer offenen Flamme an. Der Tiegelinhält schmilzt nun unter der ständigen Einwirkung des Sauerstoffstromes zusammen.It has now been found that ferrites with a higher permeability than can be obtained according to the method according to the main patent, if the transfer of the corresponding metals in the oxides with the supply of heat from the outside. These Heat supply from the outside can, for. B. caused by an electric arc, allowing the arc to burn against the surface of the contents of the crucible, or by electrical resistance heating, where it is expedient to use the crucible content as Resistance used and the heat generated by the passage of electricity exploits. Example To manufacture a nickel-zinc-manganese ferrite, a water-cooled iron crucible a powdery mixture of 10.5 parts (parts by weight) Iron powder, 0.1 part nickel powder, 0.2 part zinc powder and 0.25 parts manganese dioxide filled. If necessary, the surface of this filling is left out several tubes, oxygen flows up and ignites the contents of the crucible by briefly Touching it with an open flame. The contents of the crucible now melt under the constant Effect of the oxygen flow together.

Vor Beginn der Reaktion hat man über dem Tiegel eine in vertikaler Richtung verschiebbare Kohleelektrode angebracht, ,an die man den einen Pol einer elektrischen Spannungsquelle angeschlossen hat, während der Wandere Pol an dem Tiegel liegt. Wenn zufolge der Oxydation der Metalle der Tiegelinhalt zum Schmelzen gebracht ist, zündet man durch Senken der Kohleelektrode auf de Oberfläche der Schmelze undanschließendes Hochziehen der Kohleelektrode den Lichtbogen ..wischen Kohleelektrode und Oberfläche der Schmelze. Der Lichtbogen wird unter ständiger Einwirkung des Sauerstoffstromes so lange aufrechterhalten, bis die Schmelze restlos oxydiert ist. Man kann die Schmelze dann im Tiegel erstarren lassen oder ,auch ausgießen und dann pulverisieren.Before the start of the reaction, one has a vertical one above the crucible Direction of sliding carbon electrode attached, to which one pole of a has connected electrical voltage source, while the wandere pole on the crucible lies. When the contents of the crucible melt as a result of the oxidation of the metals is ignited by lowering the carbon electrode on the surface of the melt and then Pull up the carbon electrode to wipe the arc ... between the carbon electrode and the surface the melt. The arc is under constant influence of the oxygen flow Maintain this until the melt is completely oxidized. You can melt the then let solidify in the crucible or, also pour out and then pulverize.

In dieser Weise hergestelltes Ferritpulver ergibt sowohl als Pulver wie ,als zu einem Stab gepreßter Kern eine wesentlich höhere Permeabilität als das nach dem Verfahren des Hauptpatents hergestellte Ferritpulver.Ferrite powder produced in this way yields both powder like, as a core pressed into a rod, a much higher permeability than that Ferrite powder produced according to the process of the main patent.

Man kann der SchFnelze auch in der Weise Wärme von außen zuführen, daß man an Stelle der Kohleelektrode eine wassergekühlte Metallelektrode, z. B. eine solche aus Eisen, verwendet und diese in die Schmelze hineintaucht und durch die beim Stromdurchgang von der Metallelektrode über die Schmelze zur Tiegelwand erzeugte Stromwärme die Schmelze zusätzlich erhitzt.You can also add heat to the melt from outside that instead of the carbon electrode, a water-cooled metal electrode, e.g. B. one made of iron, used and immersed in the melt and through that when the current passes from the metal electrode via the melt to the crucible wall The heat generated by electricity additionally heats the melt.

In ähnlicher Weise lassen sich auch andere Ferrite, z. B. Bleikupfer-Ferrit, Manganzink-Ferrit, Nickelzink-Ferrit, Kixpferzink-Ferrit, Magnesiumzink-Ferrit und Kobalt-Ferrit, herstellen.In a similar way, other ferrites, e.g. B. lead copper ferrite, Manganese zinc ferrite, nickel zinc ferrite, Kixpferzink ferrite, magnesium zinc ferrite and Cobalt ferrite.

Claims (2)

PATENTANSPRÜCHE; 1. Verfahren zur Herstellung von für magnetische Zwecke geeigneten Ferriten gemäß Patent 872 203 durch Überführung der entsprechenden Metalle in die Oxyde durch Einwirkung von Sauerstoff bei Schmelztemperatur, dadurch gekennzeichnet, daß man die Oxydation unter Wärmezufuhr von außen vornimmt. PATENT CLAIMS; 1. Method of manufacturing for magnetic Purposes suitable ferrites according to patent 872 203 by converting the corresponding Metals in the oxides by the action of oxygen at the melting temperature, thereby characterized in that the oxidation is carried out with the supply of heat from the outside. 2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß man die Wärme durch einen elektrischen Lichtbogen zuführt. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß man die Wärme durch elektrische Widerstandsheizung, vorzugsweise durch Stromdurchgang durch die Schmelze, zuführt.2. Procedure according to claim 1, characterized in that the heat by an electrical Arc feeds. Process according to Claim 1, characterized in that the Heat through electrical resistance heating, preferably through the passage of current the melt, feeds.
DEB17552A 1951-11-11 1951-11-11 Process for the production of ferrites suitable for magnetic purposes Expired DE902732C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEB17552A DE902732C (en) 1951-11-11 1951-11-11 Process for the production of ferrites suitable for magnetic purposes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEB17552A DE902732C (en) 1951-11-11 1951-11-11 Process for the production of ferrites suitable for magnetic purposes

Publications (1)

Publication Number Publication Date
DE902732C true DE902732C (en) 1954-01-28

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Family Applications (1)

Application Number Title Priority Date Filing Date
DEB17552A Expired DE902732C (en) 1951-11-11 1951-11-11 Process for the production of ferrites suitable for magnetic purposes

Country Status (1)

Country Link
DE (1) DE902732C (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1075034B (en) * 1956-11-16 1960-02-04 Badische Anilin- S. Soda Fabrik Aktiengesellschaft, Ludwigshafen/Rhem Process for the production of ferrites
DE1229437B (en) * 1965-03-23 1966-11-24 Hermsdorf Keramik Veb Process for the production of sintering materials

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1075034B (en) * 1956-11-16 1960-02-04 Badische Anilin- S. Soda Fabrik Aktiengesellschaft, Ludwigshafen/Rhem Process for the production of ferrites
DE1229437B (en) * 1965-03-23 1966-11-24 Hermsdorf Keramik Veb Process for the production of sintering materials

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