JPS5650120A - Manufacture of iron oxide hydrate - Google Patents

Manufacture of iron oxide hydrate

Info

Publication number
JPS5650120A
JPS5650120A JP12635379A JP12635379A JPS5650120A JP S5650120 A JPS5650120 A JP S5650120A JP 12635379 A JP12635379 A JP 12635379A JP 12635379 A JP12635379 A JP 12635379A JP S5650120 A JPS5650120 A JP S5650120A
Authority
JP
Japan
Prior art keywords
alkali
contg
goethite
ferric salt
suspension
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.)
Granted
Application number
JP12635379A
Other languages
Japanese (ja)
Other versions
JPS6251896B2 (en
Inventor
Shinji Umeki
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.)
TDK Corp
Original Assignee
TDK Corp
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 TDK Corp filed Critical TDK Corp
Priority to JP12635379A priority Critical patent/JPS5650120A/en
Priority to NL8005435A priority patent/NL8005435A/en
Priority to GB8031820A priority patent/GB2059411A/en
Priority to DE19803037345 priority patent/DE3037345A1/en
Publication of JPS5650120A publication Critical patent/JPS5650120A/en
Publication of JPS6251896B2 publication Critical patent/JPS6251896B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/62—Record carriers characterised by the selection of the material
    • G11B5/68—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent
    • G11B5/70—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer
    • G11B5/706—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer characterised by the composition of the magnetic material
    • G11B5/70626—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer characterised by the composition of the magnetic material containing non-metallic substances
    • G11B5/70642—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer characterised by the composition of the magnetic material containing non-metallic substances iron oxides
    • G11B5/70678—Ferrites
    • G11B5/70684—Ferro-ferrioxydes
    • G11B5/70689—Magnetite
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
    • C01G49/00—Compounds of iron
    • C01G49/02—Oxides; Hydroxides
    • C01G49/06—Ferric oxide [Fe2O3]
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/10—Particle morphology extending in one dimension, e.g. needle-like
    • 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
    • C01P2004/62—Submicrometer sized, i.e. from 0.1-1 micrometer
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2006/00—Physical properties of inorganic compounds
    • C01P2006/12—Surface area
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2006/00—Physical properties of inorganic compounds
    • C01P2006/42—Magnetic properties

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Compounds Of Iron (AREA)
  • Hard Magnetic Materials (AREA)

Abstract

PURPOSE: To enable high quality goethite useful as starting material for pigment and ferrite to be inexpensively mass-produced in a relatively short time by aging an alkali suspension contg. ferric salt followed by heat treatment under atmospheric pressure.
CONSTITUTION: An aqueous soln. contg. FeCl3 or other ferric salt as a principal component is mixed with alkali to prepare an alkaline suspension. The amount of the alkali added is a slight excess such as about 1W10% excess over the amount required for neutralization. NaOH is typically used at the alkali, yet KOH or Ca (OH)2 may be used. The ferric salt-contg. alkali suspension assuming a reddish brown color is aged at 20W70°C for 3W20hr with gentle stirring, heated to a temp. from 70°C to the boiling state, and heat treated for 5W10hr, whereby it is rapidly converted into goethite assuming a yellow color. The precipitate is then separated by filtration, washed, and dried to obtain goethite powder tof fine needlelike crystal.
COPYRIGHT: (C)1981,JPO&Japio
JP12635379A 1979-10-02 1979-10-02 Manufacture of iron oxide hydrate Granted JPS5650120A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP12635379A JPS5650120A (en) 1979-10-02 1979-10-02 Manufacture of iron oxide hydrate
NL8005435A NL8005435A (en) 1979-10-02 1980-10-01 PROCESS FOR PREPARING HYDRATED IRON Oxide.
GB8031820A GB2059411A (en) 1979-10-02 1980-10-02 Process for producing hydrated iron oxide
DE19803037345 DE3037345A1 (en) 1979-10-02 1980-10-02 METHOD FOR PRODUCING HYDRATED IRON OXIDE

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12635379A JPS5650120A (en) 1979-10-02 1979-10-02 Manufacture of iron oxide hydrate

Publications (2)

Publication Number Publication Date
JPS5650120A true JPS5650120A (en) 1981-05-07
JPS6251896B2 JPS6251896B2 (en) 1987-11-02

Family

ID=14933072

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12635379A Granted JPS5650120A (en) 1979-10-02 1979-10-02 Manufacture of iron oxide hydrate

Country Status (4)

Country Link
JP (1) JPS5650120A (en)
DE (1) DE3037345A1 (en)
GB (1) GB2059411A (en)
NL (1) NL8005435A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63154795U (en) * 1987-03-28 1988-10-11

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4459276A (en) * 1981-09-17 1984-07-10 Agency Of Industrial Science & Technology Yellow iron oxide pigment and method for manufacture thereof

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63154795U (en) * 1987-03-28 1988-10-11
JPH0429120Y2 (en) * 1987-03-28 1992-07-15

Also Published As

Publication number Publication date
JPS6251896B2 (en) 1987-11-02
NL8005435A (en) 1981-04-06
DE3037345A1 (en) 1981-04-23
GB2059411A (en) 1981-04-23

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