FR2244716A1 - Iron oxide black pigment powder - prepd. by a redn. of carbon-free hematite - Google Patents

Iron oxide black pigment powder - prepd. by a redn. of carbon-free hematite

Info

Publication number
FR2244716A1
FR2244716A1 FR7432149A FR7432149A FR2244716A1 FR 2244716 A1 FR2244716 A1 FR 2244716A1 FR 7432149 A FR7432149 A FR 7432149A FR 7432149 A FR7432149 A FR 7432149A FR 2244716 A1 FR2244716 A1 FR 2244716A1
Authority
FR
France
Prior art keywords
redn
prepd
iron oxide
magnetite
carbon
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
FR7432149A
Other languages
French (fr)
Other versions
FR2244716B1 (en
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.)
Ruthner Industrieanlagen AG
Original Assignee
Ruthner Industrieanlagen AG
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 Ruthner Industrieanlagen AG filed Critical Ruthner Industrieanlagen AG
Publication of FR2244716A1 publication Critical patent/FR2244716A1/en
Application granted granted Critical
Publication of FR2244716B1 publication Critical patent/FR2244716B1/fr
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
    • C01G49/08—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
    • 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
    • C01P2006/00—Physical properties of inorganic compounds
    • C01P2006/12—Surface area

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Compounds Of Iron (AREA)
  • Pigments, Carbon Blacks, Or Wood Stains (AREA)

Abstract

The powder is composed of Fe(II,III) oxide (magnetite) and has a predetd. particle size so that the sieve residue on a 0.045 mm sieve (DIN 4188) is 0.1%. It is prepd. from Fe2O3 which has been obtd. by a thermal dissocn. of Fe chloride soln., and which is treated (a) at >400 degrees C under oxidising, reducing or neutral conditions, then (b) under reducing conditions, for example in a CO and/or H2 contg. atm., at 550 degrees C so as t form magnetite. The magnetite is then ground to powder to the required mesh size. This mesh size is related to the specific surface area of the iron oxide starting material which must be >0.5 m2/g. The reducing agent may be ground coal, coke or charcoal, hydrocarbon compsns. Pref. the Fe(II,III) oxide contains charcoal. H2 is used for the redn.
FR7432149A 1973-09-24 1974-09-24 Iron oxide black pigment powder - prepd. by a redn. of carbon-free hematite Granted FR2244716A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT819273A AT326236B (en) 1973-09-24 1973-09-24 PROCESS FOR THE PRODUCTION OF POWDERED IRON (II, III) OXIDE OF PRE-DETERMINED PARTICLE SIZE, IN PARTICULAR AS A BLACK PIGMENT

Publications (2)

Publication Number Publication Date
FR2244716A1 true FR2244716A1 (en) 1975-04-18
FR2244716B1 FR2244716B1 (en) 1982-02-12

Family

ID=3603347

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7432149A Granted FR2244716A1 (en) 1973-09-24 1974-09-24 Iron oxide black pigment powder - prepd. by a redn. of carbon-free hematite

Country Status (7)

Country Link
JP (1) JPS571554B2 (en)
AT (1) AT326236B (en)
CS (1) CS193504B2 (en)
DE (1) DE2439351A1 (en)
FR (1) FR2244716A1 (en)
PL (1) PL98940B1 (en)
YU (1) YU37362B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2603595A1 (en) * 1986-09-05 1988-03-11 Centre Nat Etd Spatiales Process for the preparation of partially reduced iron oxide (Fe2O3) and chromium oxide (Cr2O3) pigments which have improved electrical conductivity properties and anticorrosion primers and conductive paints containing them and usable for removing electrostatic charges
US6302952B1 (en) 1998-01-26 2001-10-16 Laporte Industries Limited Process for the production of black iron oxide pigments

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4205996A (en) * 1979-04-26 1980-06-03 Scm Corporation CoO Free black spinel ceramic pigment containing NiO, Fe2 O3 and Cr2 O3
DE102004060044A1 (en) * 2004-12-14 2006-06-29 Lanxess Deutschland Gmbh Color-fast, reduction and oxidation-stable iron oxide black pigments for coloring plastics and building materials
CN110454513B (en) 2014-08-12 2021-06-18 株式会社F.C.C. Power transmission device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2603595A1 (en) * 1986-09-05 1988-03-11 Centre Nat Etd Spatiales Process for the preparation of partially reduced iron oxide (Fe2O3) and chromium oxide (Cr2O3) pigments which have improved electrical conductivity properties and anticorrosion primers and conductive paints containing them and usable for removing electrostatic charges
US6302952B1 (en) 1998-01-26 2001-10-16 Laporte Industries Limited Process for the production of black iron oxide pigments
EP1051447B1 (en) * 1998-01-26 2003-05-02 Rockwood Pigments N.A., Inc. Process for the production of black iron oxide pigments

Also Published As

Publication number Publication date
JPS5060529A (en) 1975-05-24
PL98940B1 (en) 1978-05-31
AT326236B (en) 1975-11-25
JPS571554B2 (en) 1982-01-12
DE2439351A1 (en) 1975-03-27
ATA819273A (en) 1975-02-15
CS193504B2 (en) 1979-10-31
YU257774A (en) 1983-04-27
YU37362B (en) 1984-08-31
FR2244716B1 (en) 1982-02-12

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Legal Events

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