WO2007111793A3 - Low velocity oxygen-fueled flame spray method and apparatus for making ferrite material products and products produced thereby - Google Patents

Low velocity oxygen-fueled flame spray method and apparatus for making ferrite material products and products produced thereby Download PDF

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Publication number
WO2007111793A3
WO2007111793A3 PCT/US2007/004273 US2007004273W WO2007111793A3 WO 2007111793 A3 WO2007111793 A3 WO 2007111793A3 US 2007004273 W US2007004273 W US 2007004273W WO 2007111793 A3 WO2007111793 A3 WO 2007111793A3
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WO
WIPO (PCT)
Prior art keywords
flame spray
products
low velocity
ferrite
velocity oxygen
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PCT/US2007/004273
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French (fr)
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WO2007111793A2 (en
Inventor
Danny R Smith
Henry G Paris
Jeffrey A Merker
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Steward Advanced Materials Inc
Danny R Smith
Henry G Paris
Jeffrey A Merker
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Application filed by Steward Advanced Materials Inc, Danny R Smith, Henry G Paris, Jeffrey A Merker filed Critical Steward Advanced Materials Inc
Publication of WO2007111793A2 publication Critical patent/WO2007111793A2/en
Publication of WO2007111793A3 publication Critical patent/WO2007111793A3/en

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    • C01—INORGANIC CHEMISTRY
    • C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
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    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
    • C04B35/26—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on ferrites
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    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
    • C04B35/26—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on ferrites
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    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
    • C04B35/26—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on ferrites
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    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
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    • C04B35/62605—Treating the starting powders individually or as mixtures
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    • C04B35/62605—Treating the starting powders individually or as mixtures
    • C04B35/62645—Thermal treatment of powders or mixtures thereof other than sintering
    • C04B35/6268—Thermal treatment of powders or mixtures thereof other than sintering characterised by the applied pressure or type of atmosphere, e.g. in vacuum, hydrogen or a specific oxygen pressure
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    • C04B35/628—Coating the powders or the macroscopic reinforcing agents
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    • C23F13/00—Inhibiting corrosion of metals by anodic or cathodic protection
    • C23F13/02—Inhibiting corrosion of metals by anodic or cathodic protection cathodic; Selection of conditions, parameters or procedures for cathodic protection, e.g. of electrical conditions
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
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Abstract

A method for making ferrite powder may include providing ferrite feed materials in a form of particles, such as having different sizes and irregular shapes. The method may further include exposing the ferrite feed materials to a low velocity oxygen-fueled (LVOF) flame spray. This may provide a more spherical shape to irregularly shaped particles to thereby make the ferrite powder. An apparatus for making ferrite powder may include a feeder for ferrite feed materials and a LVOF flame spray system for exposing the ferrite feed materials to the flame spray.
PCT/US2007/004273 2006-02-17 2007-02-16 Low velocity oxygen-fueled flame spray method and apparatus for making ferrite material products and products produced thereby WO2007111793A2 (en)

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US77430906P 2006-02-17 2006-02-17
US60/774,309 2006-02-17

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WO2007111793A2 WO2007111793A2 (en) 2007-10-04
WO2007111793A3 true WO2007111793A3 (en) 2007-12-13

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US20210277527A1 (en) * 2016-07-08 2021-09-09 University Of Southern California An inexpensive and robust oxygen evolution electrode

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US6045913A (en) * 1995-11-01 2000-04-04 Minnesota Mining And Manufacturing Company At least partly fused particulates and methods of making them by flame fusion
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WO2003096358A1 (en) * 2002-05-08 2003-11-20 Steward, Inc. Method and apparatus for making ferrite material products and products produced thereby

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GB1398871A (en) * 1971-07-08 1975-06-25 Xerox Corp Process of making ferrite materials
US4019842A (en) * 1975-02-24 1977-04-26 Xerox Corporation Apparatus for forming magnetite electrostatographic carriers
JPS6250839A (en) * 1985-08-30 1987-03-05 Dowa Teppun Kogyo Kk Production of ferrite carrier for electrophotographic developer
EP0394020A2 (en) * 1989-04-19 1990-10-24 Toda Kogyo Corp. Ferrite particles and ferrite resin composite for bonded magnetic core and process for their production
US6045913A (en) * 1995-11-01 2000-04-04 Minnesota Mining And Manufacturing Company At least partly fused particulates and methods of making them by flame fusion
EP1090884A1 (en) * 1999-10-08 2001-04-11 Sumitomo Special Metals Co., Ltd. Method of making ferrite material powder by spray pyrolysis process and method of producing ferrite magnet
WO2003096358A1 (en) * 2002-05-08 2003-11-20 Steward, Inc. Method and apparatus for making ferrite material products and products produced thereby

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