GB1421773A - Production of iron oxide - Google Patents

Production of iron oxide

Info

Publication number
GB1421773A
GB1421773A GB4845672A GB4845672A GB1421773A GB 1421773 A GB1421773 A GB 1421773A GB 4845672 A GB4845672 A GB 4845672A GB 4845672 A GB4845672 A GB 4845672A GB 1421773 A GB1421773 A GB 1421773A
Authority
GB
United Kingdom
Prior art keywords
precipitate
iron oxide
oxide
iron
lime
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
GB4845672A
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.)
Evonik LIL Ltd
Original Assignee
Laporte Industries Ltd
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 Laporte Industries Ltd filed Critical Laporte Industries Ltd
Priority to GB4845672A priority Critical patent/GB1421773A/en
Priority to AU61615/73A priority patent/AU477426B2/en
Publication of GB1421773A publication Critical patent/GB1421773A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B82—NANOTECHNOLOGY
    • B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
    • B82Y30/00—Nanotechnology for materials or surface science, e.g. nanocomposites
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
    • C01F11/00—Compounds of calcium, strontium, or barium
    • C01F11/46—Sulfates
    • 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
    • C01G49/08—Ferroso-ferric oxide (Fe3O4)
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK  ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
    • C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
    • C09C1/22—Compounds of iron
    • C09C1/24—Oxides of iron
    • 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
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/51—Particles with a specific particle size distribution
    • C01P2004/52—Particles with a specific particle size distribution highly monodisperse size distribution
    • 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
    • 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
    • C01P2004/00—Particle morphology
    • C01P2004/60—Particles characterised by their size
    • C01P2004/64—Nanometer sized, i.e. from 1-100 nanometer
    • 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
    • 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
    • C01P2006/60—Optical properties, e.g. expressed in CIELAB-values
    • 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
    • C01P2006/80—Compositional purity

Abstract

1421773 Production of iron oxide LAPORTE INDUSTRIES Ltd 3 Oct 1973 [20 Oct 1972] 48456/72 Heading C1A Magnetic iron oxide is manufactured by treating an aqueous acidic liquor containing ferrous sulphate with lime in the presence of added ammonium or alkali metal cations to produce a precipitate containing hydrated ferrous oxide and CaSO 4 , oxidizing the precipitate until the proportion of ferrous oxide in it is within the range of from 15-30% based on the total weight of iron oxides in the precipitate, and separating the resulting mixture of iron oxides from the CuSO 4 in the oxidized precipitate. It is preferred to carry out the treatment with lime at 10-40‹ C. for 15-30 min. in the presence of from 2-20% of NaCl, Na 2 SO 4 , NaNO 3 , KNO 3 or NH 4 Cl, the oxidation being performed after completion of the precipitation by passing iron through the suspension at 80-85‹ C. for a few hours. The product, magnetic iron oxide, is separated from the slurry by magnetic means, dried and sieved and is suitable for use as a pigment.
GB4845672A 1972-10-20 1972-10-20 Production of iron oxide Expired GB1421773A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB4845672A GB1421773A (en) 1972-10-20 1972-10-20 Production of iron oxide
AU61615/73A AU477426B2 (en) 1972-10-20 1973-10-19 Production of iron oxide

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4845672A GB1421773A (en) 1972-10-20 1972-10-20 Production of iron oxide

Publications (1)

Publication Number Publication Date
GB1421773A true GB1421773A (en) 1976-01-21

Family

ID=10448671

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4845672A Expired GB1421773A (en) 1972-10-20 1972-10-20 Production of iron oxide

Country Status (1)

Country Link
GB (1) GB1421773A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6416723B1 (en) 1998-03-20 2002-07-09 Bayer Aktiengesellschaft Method for reprocessing waste acid to form gypsum and iron oxide
US6440377B1 (en) 1998-03-20 2002-08-27 Bayer Aktiengesellschaft Method for reprocessing waste acid resulting from TiO2 production
US6530987B1 (en) 1998-03-20 2003-03-11 Bayer Aktiengesellschaft Method for producing iron oxide pigments from waste acid resulting from TiO2 production

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6416723B1 (en) 1998-03-20 2002-07-09 Bayer Aktiengesellschaft Method for reprocessing waste acid to form gypsum and iron oxide
US6440377B1 (en) 1998-03-20 2002-08-27 Bayer Aktiengesellschaft Method for reprocessing waste acid resulting from TiO2 production
US6530987B1 (en) 1998-03-20 2003-03-11 Bayer Aktiengesellschaft Method for producing iron oxide pigments from waste acid resulting from TiO2 production

Also Published As

Publication number Publication date
AU6161573A (en) 1975-04-24

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee