GB1445288A - Process for producing goethite - Google Patents

Process for producing goethite

Info

Publication number
GB1445288A
GB1445288A GB4911874A GB4911874A GB1445288A GB 1445288 A GB1445288 A GB 1445288A GB 4911874 A GB4911874 A GB 4911874A GB 4911874 A GB4911874 A GB 4911874A GB 1445288 A GB1445288 A GB 1445288A
Authority
GB
United Kingdom
Prior art keywords
goethite
nov
nitrate
ferrous salt
alkali
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
GB4911874A
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
Publication of GB1445288A publication Critical patent/GB1445288A/en
Expired 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
    • G11B5/70652—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 gamma - Fe2 O3
    • G11B5/70668—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 gamma - Fe2 O3 containing a dopant
    • 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)
    • 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
    • G11B5/70647—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 with a skin
    • 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
    • G11B5/70652—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 gamma - Fe2 O3
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/54—Particles characterised by their aspect ratio, i.e. the ratio of sizes in the longest to the shortest dimension
    • 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
    • C01P2006/42—Magnetic properties

Abstract

1445288 Iron oxides TDK ELECTRONICS CO Ltd 13 Nov 1974 [21 Nov 1973] 49118/74 Heading C1A Goethite (FeO.OH or Fe 2 O 3 .H 2 O) is prepared by reacting an alkali metal or alkaline earth metal salt of nitric or chloric acid (i.e. a nitrate or chlorate) with a ferrous salt in the presence of sufficient excess of alkali to give an initial pH of more than 13. The ferrous salt used may be the nitrate, sulphate or chloride, while the oxidant may be the nitrates or chlorates of sodium, potassium, magnesium, calcium or ammonium. Other metallic elements, such as nickel, may be incorporated with goethite by addition of their salts to the reaction mixture. The goethite may be converted to γ-ferric oxide by dehydrating it and then (a) reducing and (b) re-oxidizing the product.
GB4911874A 1973-11-21 1974-11-13 Process for producing goethite Expired GB1445288A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13007573A JPS5652856B2 (en) 1973-11-21 1973-11-21

Publications (1)

Publication Number Publication Date
GB1445288A true GB1445288A (en) 1976-08-11

Family

ID=15025381

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4911874A Expired GB1445288A (en) 1973-11-21 1974-11-13 Process for producing goethite

Country Status (3)

Country Link
JP (1) JPS5652856B2 (en)
DE (1) DE2455158C2 (en)
GB (1) GB1445288A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6534032B2 (en) 2000-03-06 2003-03-18 Bayer Aktiengesellschaft Process for the production of yellow iron oxide
US6689206B2 (en) 2000-09-08 2004-02-10 Bayer Aktiengesellschaft Process for producing yellow iron oxide pigments
US7799125B2 (en) * 2006-05-13 2010-09-21 Lanxess Deutschland Gmbh Yellow iron oxide pigments

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4495164A (en) * 1980-05-30 1985-01-22 Toda Kogyo Corp. Process for producing acicular magnetite or acicular maghemite
JPS6175062U (en) * 1984-10-22 1986-05-21
JPS6175063U (en) * 1984-10-22 1986-05-21
ES2553798T3 (en) 2003-09-03 2015-12-11 Lanxess Deutschland Gmbh Procedure for the production of yellow iron oxide pigments with CaCO3 as precipitation agent
EP3517504A1 (en) 2018-01-26 2019-07-31 LANXESS Deutschland GmbH Process for the manufacturing of goethite pigments

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE906598C (en) * 1951-09-26 1954-03-15 Bayer Ag Process for the production of iron oxide pigments
DE1176111B (en) * 1962-07-16 1964-08-20 Bayer Ag Process for the production of ferromagnetic ª † -FeO
DE1792272B1 (en) * 1968-08-13 1971-02-18 Siegle & Co Gmbh G Process for the production of easily dispersible, transparent iron oxide red pigments of the alpha modification
JPS4829718B1 (en) * 1969-11-13 1973-09-12

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6534032B2 (en) 2000-03-06 2003-03-18 Bayer Aktiengesellschaft Process for the production of yellow iron oxide
US6689206B2 (en) 2000-09-08 2004-02-10 Bayer Aktiengesellschaft Process for producing yellow iron oxide pigments
US7799125B2 (en) * 2006-05-13 2010-09-21 Lanxess Deutschland Gmbh Yellow iron oxide pigments

Also Published As

Publication number Publication date
DE2455158C2 (en) 1983-02-17
JPS5080299A (en) 1975-06-30
DE2455158A1 (en) 1975-05-22
JPS5652856B2 (en) 1981-12-15

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Legal Events

Date Code Title Description
PS Patent sealed
PE20 Patent expired after termination of 20 years

Effective date: 19941112