GB1045138A - The preparation of ferric oxide coated powders and manufactured ferrites - Google Patents

The preparation of ferric oxide coated powders and manufactured ferrites

Info

Publication number
GB1045138A
GB1045138A GB782164A GB782164A GB1045138A GB 1045138 A GB1045138 A GB 1045138A GB 782164 A GB782164 A GB 782164A GB 782164 A GB782164 A GB 782164A GB 1045138 A GB1045138 A GB 1045138A
Authority
GB
United Kingdom
Prior art keywords
ferric oxide
oxide coated
ferrites
manufactured
preparation
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
GB782164A
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.)
Produits Chimiques Pechiney Saint Gobain
Original Assignee
Produits Chimiques Pechiney Saint Gobain
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 Produits Chimiques Pechiney Saint Gobain filed Critical Produits Chimiques Pechiney Saint Gobain
Publication of GB1045138A publication Critical patent/GB1045138A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
    • C01G49/00—Compounds of iron
    • C01G49/0018—Mixed oxides or hydroxides
    • C01G49/0072—Mixed oxides or hydroxides containing manganese
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
    • C01G49/00—Compounds of iron
    • C01G49/0018—Mixed oxides or hydroxides
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
    • C01G49/00—Compounds of iron
    • C01G49/0018—Mixed oxides or hydroxides
    • C01G49/0036—Mixed oxides or hydroxides containing one alkaline earth metal, magnesium or lead
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
    • C01G53/00—Compounds of nickel
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
    • H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
    • H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
    • H01F1/12—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials
    • H01F1/34—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials non-metallic substances, e.g. ferrites
    • H01F1/36—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials non-metallic substances, e.g. ferrites in the form of particles
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
    • H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
    • H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
    • H01F1/12—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials
    • H01F1/34—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials non-metallic substances, e.g. ferrites
    • H01F1/36—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials non-metallic substances, e.g. ferrites in the form of particles
    • H01F1/37—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials non-metallic substances, e.g. ferrites in the form of particles in a bonding agent
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/60—Particles characterised by their size
    • C01P2004/61—Micrometer sized, i.e. from 1-100 micrometer

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Dispersion Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Compounds Of Iron (AREA)

Abstract

A process for making a ferric oxide coated powder which may be converted into a ferrite comprises depositing ferric oxide directly upon a support consisting of a finely divided divalent metal oxide suspended in an aqueous medium comprising an aqueous solution of ferrous sulphate containing free metallic iron and stirring the mixture while blowing air therethrough. The reaction is carried out at between 50 DEG and 80 DEG C., preferably 75 DEG C. The quantities of reagents are such that the mixture contains not more than 120 g. of ferric oxide coated powder per litre per litre of solution. The product is filtered and washed and then stamped or pressed, with or without a binder, and finally heated to convert it to a ferrite.
GB782164A 1963-02-26 1964-02-25 The preparation of ferric oxide coated powders and manufactured ferrites Expired GB1045138A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR926040A FR1357734A (en) 1963-02-26 1963-02-26 Process for the preparation of ferrite and ferrite powders resulting therefrom

Publications (1)

Publication Number Publication Date
GB1045138A true GB1045138A (en) 1966-10-12

Family

ID=8797904

Family Applications (1)

Application Number Title Priority Date Filing Date
GB782164A Expired GB1045138A (en) 1963-02-26 1964-02-25 The preparation of ferric oxide coated powders and manufactured ferrites

Country Status (5)

Country Link
BE (1) BE644274A (en)
DE (1) DE1225156B (en)
FR (1) FR1357734A (en)
GB (1) GB1045138A (en)
NL (1) NL146469B (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3315298A1 (en) * 1982-04-27 1984-01-12 Japan Metals & Chemicals Co., Ltd. METHOD FOR PRODUCING MAGNETIC METAL OXIDE
EP0262534A2 (en) * 1986-09-30 1988-04-06 BASF Aktiengesellschaft Fine solid spherical particles with two layers
US10016744B2 (en) 2006-08-24 2018-07-10 Axens Method for producing metal oxide compositions and coated substrates

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3315298A1 (en) * 1982-04-27 1984-01-12 Japan Metals & Chemicals Co., Ltd. METHOD FOR PRODUCING MAGNETIC METAL OXIDE
EP0262534A2 (en) * 1986-09-30 1988-04-06 BASF Aktiengesellschaft Fine solid spherical particles with two layers
EP0262534A3 (en) * 1986-09-30 1990-11-22 Basf Aktiengesellschaft Fine solid spherical particles with two layers
US10016744B2 (en) 2006-08-24 2018-07-10 Axens Method for producing metal oxide compositions and coated substrates

Also Published As

Publication number Publication date
NL6401834A (en) 1964-08-27
BE644274A (en) 1964-08-24
FR1357734A (en) 1964-04-10
NL146469B (en) 1975-07-15
DE1225156B (en) 1966-09-22

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