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WO2008136139A1 - Process for production of spherical metal oxide powder - Google Patents

Process for production of spherical metal oxide powder Download PDF

Info

Publication number
WO2008136139A1
WO2008136139A1 PCT/JP2007/065937 JP2007065937W WO2008136139A1 WO 2008136139 A1 WO2008136139 A1 WO 2008136139A1 JP 2007065937 W JP2007065937 W JP 2007065937W WO 2008136139 A1 WO2008136139 A1 WO 2008136139A1
Authority
WO
WIPO (PCT)
Prior art keywords
powder
metal oxide
production
spherical
powders
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.)
Ceased
Application number
PCT/JP2007/065937
Other languages
French (fr)
Japanese (ja)
Inventor
Toshiaki Ishimaru
Wataru Suehiro
Hideaki Hirai
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.)
Denka Co Ltd
Original Assignee
Denki Kagaku Kogyo KK
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 Denki Kagaku Kogyo KK filed Critical Denki Kagaku Kogyo KK
Publication of WO2008136139A1 publication Critical patent/WO2008136139A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C1/00—Magnetic separation
    • B03C1/02—Magnetic separation acting directly on the substance being separated
    • B03C1/26—Magnetic separation acting directly on the substance being separated with free falling material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C1/00—Magnetic separation
    • B03C1/02—Magnetic separation acting directly on the substance being separated
    • B03C1/025—High gradient magnetic separators
    • B03C1/031—Component parts; Auxiliary operations
    • B03C1/033—Component parts; Auxiliary operations characterised by the magnetic circuit
    • B03C1/0335—Component parts; Auxiliary operations characterised by the magnetic circuit using coils
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C1/00—Magnetic separation
    • B03C1/02—Magnetic separation acting directly on the substance being separated
    • B03C1/30—Combinations with other devices, not otherwise provided for
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B13/00—Oxygen; Ozone; Oxides or hydroxides in general
    • C01B13/14—Methods for preparing oxides or hydroxides in general
    • C01B13/32—Methods for preparing oxides or hydroxides in general by oxidation or hydrolysis of elements or compounds in the liquid or solid state or in non-aqueous solution, e.g. sol-gel process
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B33/00—Silicon; Compounds thereof
    • C01B33/113—Silicon oxides; Hydrates thereof
    • C01B33/12—Silica; Hydrates thereof, e.g. lepidoic silicic acid
    • C01B33/18—Preparation of finely divided silica neither in sol nor in gel form; After-treatment thereof
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/30—Particle morphology extending in three dimensions
    • C01P2004/32—Spheres
    • 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

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Oxygen, Ozone, And Oxides In General (AREA)
  • Silicon Compounds (AREA)
  • Glanulating (AREA)
  • Inorganic Compounds Of Heavy Metals (AREA)

Abstract

A process for the production of spherical metal oxide powder which comprises the step of injecting one or more raw material powders selected from the group consisting of metal powders, metal oxide powders and metal hydroxide powders into flame to form a spherical powder and recovering the spherical powder with a collector, characterized by comprising the step of passing a powder to be treated which contains at least either of the raw material powder and the recovered spherical powder through a foreign matter removal unit to reduce the quantity of foreign matter contained in the powder to be treated to 450 pieces/50g or below.
PCT/JP2007/065937 2007-04-26 2007-08-16 Process for production of spherical metal oxide powder Ceased WO2008136139A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2007-116739 2007-04-26
JP2007116739A JP2010159168A (en) 2007-04-26 2007-04-26 Method for producing spherical metal oxide powder

Publications (1)

Publication Number Publication Date
WO2008136139A1 true WO2008136139A1 (en) 2008-11-13

Family

ID=39943261

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2007/065937 Ceased WO2008136139A1 (en) 2007-04-26 2007-08-16 Process for production of spherical metal oxide powder

Country Status (2)

Country Link
JP (1) JP2010159168A (en)
WO (1) WO2008136139A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015086120A (en) * 2013-10-31 2015-05-07 株式会社トクヤマ Spherical silica fine powder and production method thereof
JP2019182694A (en) * 2018-04-05 2019-10-24 三菱ケミカル株式会社 Synthetic silica glass powder

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5787591B2 (en) * 2011-04-20 2015-09-30 原子燃料工業株式会社 Foreign matter removing apparatus, foreign matter removing method, uranium oxide pellet and fuel assembly manufacturing method
JP7542433B2 (en) * 2020-12-25 2024-08-30 モメンティブ・テクノロジーズ・山形株式会社 Apparatus for removing magnetic powder from quartz glass raw material powder, and method for removing magnetic powder using said apparatus
JP7663678B2 (en) 2021-03-31 2025-04-16 デンカ株式会社 Metal oxide powder and its manufacturing method
JP2023036470A (en) * 2021-09-02 2023-03-14 デンカ株式会社 Method for producing inorganic oxide particles

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1147633A (en) * 1997-08-07 1999-02-23 Toshiba Chem Corp Metal removing device
JP2000317342A (en) * 1999-04-28 2000-11-21 Nippon Magnetics Kk Magnetic matter removing apparatus
JP2002179409A (en) * 2000-12-12 2002-06-26 Denki Kagaku Kogyo Kk Method for producing fine spherical inorganic powder
JP2005187302A (en) * 2003-12-26 2005-07-14 Mitsubishi Rayon Co Ltd High purity non-magnetic metal oxide powder and method for producing the same

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1147633A (en) * 1997-08-07 1999-02-23 Toshiba Chem Corp Metal removing device
JP2000317342A (en) * 1999-04-28 2000-11-21 Nippon Magnetics Kk Magnetic matter removing apparatus
JP2002179409A (en) * 2000-12-12 2002-06-26 Denki Kagaku Kogyo Kk Method for producing fine spherical inorganic powder
JP2005187302A (en) * 2003-12-26 2005-07-14 Mitsubishi Rayon Co Ltd High purity non-magnetic metal oxide powder and method for producing the same

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015086120A (en) * 2013-10-31 2015-05-07 株式会社トクヤマ Spherical silica fine powder and production method thereof
JP2019182694A (en) * 2018-04-05 2019-10-24 三菱ケミカル株式会社 Synthetic silica glass powder

Also Published As

Publication number Publication date
JP2010159168A (en) 2010-07-22

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