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GB1398871A - Process of making ferrite materials - Google Patents

Process of making ferrite materials

Info

Publication number
GB1398871A
GB1398871A GB3128572A GB3128572A GB1398871A GB 1398871 A GB1398871 A GB 1398871A GB 3128572 A GB3128572 A GB 3128572A GB 3128572 A GB3128572 A GB 3128572A GB 1398871 A GB1398871 A GB 1398871A
Authority
GB
United Kingdom
Prior art keywords
beads
ferrites
slurry
metal oxides
ferrite
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
GB3128572A
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.)
Xerox Corp
Original Assignee
Xerox 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 Xerox Corp filed Critical Xerox Corp
Publication of GB1398871A publication Critical patent/GB1398871A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G9/00—Developers
    • G03G9/08—Developers with toner particles
    • G03G9/10—Developers with toner particles characterised by carrier particles
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G9/00—Developers
    • G03G9/08—Developers with toner particles
    • G03G9/10—Developers with toner particles characterised by carrier particles
    • G03G9/107—Developers with toner particles characterised by carrier particles having magnetic components
    • G03G9/108—Ferrite carrier, e.g. magnetite
    • G03G9/1085—Ferrite carrier, e.g. magnetite with non-ferrous metal oxide, e.g. MgO-Fe2O3
    • 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
    • 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
    • H01F1/12—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 soft-magnetic materials
    • H01F1/34—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 soft-magnetic materials non-metallic substances, e.g. ferrites
    • H01F1/36—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 soft-magnetic materials non-metallic substances, e.g. ferrites in the form of particles

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Soft Magnetic Materials (AREA)
  • Compounds Of Iron (AREA)
  • Magnetic Ceramics (AREA)
  • Developing Agents For Electrophotography (AREA)

Abstract

1398871 Ferrites XEROX CORP 4 July 1972 [8 July 1971] 31285/72 Heading C1J Ferrites are made by preparing a slurry of ferrite-forming metal oxides in a liquid, spray drying the slurry to form substantially spherical beads of mixed metal oxides and sintering the beads to form ferrite beads while maintaining the spherical shape and particulate nature of the beads. The metal oxides may be mixed in slurry form with conventional mixing equipment or they may be premixed before contact with a liquid medium. If the spherical beads are fired in a rotary kiln a flow promoting additive, e.g. Al 2 O 3 or ZrO 2 may be used to prevent beadto-bead agglomeration. Typical firing temperatures are 1150-1600‹ C. Nickel-zinc ferrite and manganese-zinc ferrites are preferred products since they provide magnetic permeability, conductivity and other properties useful in the electrostatographic art. Examples describe the preparation of Ni-Zn and Mu-Zn ferrites in which deflocculants and binders are used to alter the nature of the product.
GB3128572A 1971-07-08 1972-07-04 Process of making ferrite materials Expired GB1398871A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US16089371A 1971-07-08 1971-07-08

Publications (1)

Publication Number Publication Date
GB1398871A true GB1398871A (en) 1975-06-25

Family

ID=22578913

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3128572A Expired GB1398871A (en) 1971-07-08 1972-07-04 Process of making ferrite materials

Country Status (12)

Country Link
JP (1) JPS5315040B1 (en)
AR (1) AR194244A1 (en)
AU (1) AU471676B2 (en)
BE (1) BE785913A (en)
BR (1) BR7204270D0 (en)
CA (1) CA1000477A (en)
DE (1) DE2224150A1 (en)
ES (1) ES404423A1 (en)
FR (1) FR2144854B1 (en)
GB (1) GB1398871A (en)
IT (1) IT962400B (en)
NL (1) NL174408C (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007111793A2 (en) * 2006-02-17 2007-10-04 Steward Advanced Materials, Inc. Low velocity oxygen-fueled flame spray method and apparatus for making ferrite material products and products produced thereby
CN103011793A (en) * 2012-12-27 2013-04-03 中南大学 Method for preparing nickel-zinc ferrite by using microwave technology
CN112374879A (en) * 2020-11-12 2021-02-19 南通三优佳磁业有限公司 Preparation method of anti-electromagnetic interference manganese-zinc ferrite material
CN113956029A (en) * 2021-11-25 2022-01-21 湖南航天磁电科技有限公司 Method for reducing shrinkage rate of permanent magnetic ferrite material

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6090345A (en) * 1983-10-24 1985-05-21 Fuji Xerox Co Ltd Developer carrier for electrophotographic copying machine

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007111793A2 (en) * 2006-02-17 2007-10-04 Steward Advanced Materials, Inc. Low velocity oxygen-fueled flame spray method and apparatus for making ferrite material products and products produced thereby
WO2007111793A3 (en) * 2006-02-17 2007-12-13 Steward Advanced Materials Inc Low velocity oxygen-fueled flame spray method and apparatus for making ferrite material products and products produced thereby
CN103011793A (en) * 2012-12-27 2013-04-03 中南大学 Method for preparing nickel-zinc ferrite by using microwave technology
CN112374879A (en) * 2020-11-12 2021-02-19 南通三优佳磁业有限公司 Preparation method of anti-electromagnetic interference manganese-zinc ferrite material
CN113956029A (en) * 2021-11-25 2022-01-21 湖南航天磁电科技有限公司 Method for reducing shrinkage rate of permanent magnetic ferrite material

Also Published As

Publication number Publication date
BE785913A (en) 1973-01-08
AU4437072A (en) 1974-01-10
FR2144854A1 (en) 1973-02-16
DE2224150A1 (en) 1973-01-25
NL174408C (en) 1984-06-01
FR2144854B1 (en) 1980-04-18
CA1000477A (en) 1976-11-30
ES404423A1 (en) 1975-06-01
IT962400B (en) 1973-12-20
AU471676B2 (en) 1976-04-29
BR7204270D0 (en) 1973-06-12
NL174408B (en) 1984-01-02
JPS5315040B1 (en) 1978-05-22
NL7209525A (en) 1973-01-10
AR194244A1 (en) 1973-06-29

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
746 Register noted 'licences of right' (sect. 46/1977)
PE20 Patent expired after termination of 20 years