FR1414352A - Procédé de préparation de magnétite pulvérulente à particules de surface lisse et arrondie - Google Patents

Procédé de préparation de magnétite pulvérulente à particules de surface lisse et arrondie

Info

Publication number
FR1414352A
FR1414352A FR995024A FR995024A FR1414352A FR 1414352 A FR1414352 A FR 1414352A FR 995024 A FR995024 A FR 995024A FR 995024 A FR995024 A FR 995024A FR 1414352 A FR1414352 A FR 1414352A
Authority
FR
France
Prior art keywords
smooth
particles
preparation
rounded surface
magnetite
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
FR995024A
Other languages
English (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.)
Knapsack AG
Knapsack Griesheim AG
Original Assignee
Knapsack AG
Knapsack Griesheim 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
Priority claimed from DEK51396A external-priority patent/DE1262986B/de
Application filed by Knapsack AG, Knapsack Griesheim AG filed Critical Knapsack AG
Priority to FR995024A priority Critical patent/FR1414352A/fr
Application granted granted Critical
Publication of FR1414352A publication Critical patent/FR1414352A/fr
Expired legal-status Critical Current

Links

Classifications

    • 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
    • H01F1/44—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of magnetic liquids, e.g. ferrofluids
    • H01F1/445—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of magnetic liquids, e.g. ferrofluids the magnetic component being a compound, e.g. Fe3O4
    • 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]
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F5/00—Dryer section of machines for making continuous webs of paper
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F5/00—Dryer section of machines for making continuous webs of paper
    • D21F5/18—Drying webs by hot air
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
    • F26B21/14—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects using gases or vapours other than air or steam, e.g. inert gases
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B3/00—Drying solid materials or objects by processes involving the application of heat
    • F26B3/02—Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air
    • F26B3/10—Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air the gas or vapour carrying the materials or objects to be dried with it
    • F26B3/12—Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air the gas or vapour carrying the materials or objects to be dried with it in the form of a spray, i.e. sprayed or dispersed emulsions or suspensions
    • 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
    • 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
    • H01F1/032—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 hard-magnetic materials
    • H01F1/10—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 hard-magnetic materials non-metallic substances, e.g. ferrites, e.g. [(Ba,Sr)O(Fe2O3)6] ferrites with hexagonal structure
    • H01F1/11—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 hard-magnetic materials non-metallic substances, e.g. ferrites, e.g. [(Ba,Sr)O(Fe2O3)6] ferrites with hexagonal structure in the form of particles
    • 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
    • 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
    • C01P2006/00—Physical properties of inorganic compounds
    • C01P2006/10—Solid density
    • 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
    • C01P2006/22—Rheological behaviour as dispersion, e.g. viscosity, sedimentation stability
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Microbiology (AREA)
FR995024A 1963-11-18 1964-11-16 Procédé de préparation de magnétite pulvérulente à particules de surface lisse et arrondie Expired FR1414352A (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR995024A FR1414352A (fr) 1963-11-18 1964-11-16 Procédé de préparation de magnétite pulvérulente à particules de surface lisse et arrondie

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEK51396A DE1262986B (de) 1963-11-18 1963-11-18 Verfahren zur Herstellung von Magnetit in Pulverform mit glatter und abgerundeter Oberflaeche
FR995024A FR1414352A (fr) 1963-11-18 1964-11-16 Procédé de préparation de magnétite pulvérulente à particules de surface lisse et arrondie

Publications (1)

Publication Number Publication Date
FR1414352A true FR1414352A (fr) 1965-10-15

Family

ID=25983840

Family Applications (1)

Application Number Title Priority Date Filing Date
FR995024A Expired FR1414352A (fr) 1963-11-18 1964-11-16 Procédé de préparation de magnétite pulvérulente à particules de surface lisse et arrondie

Country Status (1)

Country Link
FR (1) FR1414352A (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2320905A1 (fr) * 1975-08-11 1977-03-11 Westinghouse Electric Corp Procede de preparation de spheres de magnetite au moyen d'un appareil de chauffage a arc
FR2411050A1 (fr) * 1977-12-08 1979-07-06 Alusuisse Procede pour donner une forme spherique par fusion a des particules de ferrite
EP0187434A2 (fr) * 1984-12-27 1986-07-16 Toda Kogyo Corp. Particules magnétiques sphériques

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2320905A1 (fr) * 1975-08-11 1977-03-11 Westinghouse Electric Corp Procede de preparation de spheres de magnetite au moyen d'un appareil de chauffage a arc
FR2411050A1 (fr) * 1977-12-08 1979-07-06 Alusuisse Procede pour donner une forme spherique par fusion a des particules de ferrite
EP0187434A2 (fr) * 1984-12-27 1986-07-16 Toda Kogyo Corp. Particules magnétiques sphériques
EP0187434A3 (en) * 1984-12-27 1987-09-02 Toda Kogyo Corp Spherical magnetite particles

Similar Documents

Publication Publication Date Title
FR1505928A (fr) Particules colloïdales composites et leur procédé de préparation
FR1385371A (fr) Procédé et dispositifs pour le séchage de particules de matières solides
FR1414352A (fr) Procédé de préparation de magnétite pulvérulente à particules de surface lisse et arrondie
CH398270A (fr) Procédé de broyage de particules solides
CH458891A (fr) Procédé et outillage pour la fabrication de pièces annulaires
FR1462867A (fr) Procédé de préparation de particules métalliques aimantables convenant pour la fabrication de supports de magnétogrammes
CH471161A (fr) Procédé de préparation de nitrocellulose densifiée à petites particules
FR1524694A (fr) Procédé de préparation perfectionné de particules sphériques d'oxyde minéral
CH438331A (fr) Procédé de préparation de 3-uréido-5-pyrazolones et de 3-thiouréido-5-pyrazolones
FR1395562A (fr) Préparation et laminage de particules alumineuses
FR1357734A (fr) Procédé de préparation de poudres de ferrites et ferrites en résultant
FR1381382A (fr) Procédé et appareillage perfectionnés pour le transfert de matières pulvérulentes
FR1357214A (fr) Particules ferromagnétiques de cobalt
FR1433421A (fr) Procédé et appareil pour la fabrication de particules microscopiques enrobées
FR1389327A (fr) Procédé pour la préparation du bicarbure de thorium et de particules de bicarburede thorium-uranium
CH539480A (fr) Procédé de préparation de particules sphériques et aplication du procédé
FR1416419A (fr) Poudre à mouler de polytétrafluoroéthylène et procédé pour sa préparation
FR1389328A (fr) Procédé pour la préparation de particules sphériques de bicarbure de thorium et de bicarbure de thorium-uranium
FR1418499A (fr) Procédé pour la fabrication de particules sphériques en oxydes d'actinides et particules obtenus par le procédé
FR1285730A (fr) Procédé de fabrication de particules ferromagnétiques
FR1304096A (fr) Plaques décoratives à base de particules cellulosiques agglomérées et procédé de fabrication
FR1427633A (fr) Procédé pour le traitement et la manipulation de matières radioactives
FR1326383A (fr) Procédé d'agglomération de matières en particules
FR1351668A (fr) Procédé et appareillage pour la fabrication de granules
FR1485429A (fr) Procédé de fabrication de particules sphériques ou analogues et ses diverses applications