FR2243153A1 - Ultrafine particles of silica or alumina - prepd by arc reducing coarse particles and reoxidising metal vapour - Google Patents

Ultrafine particles of silica or alumina - prepd by arc reducing coarse particles and reoxidising metal vapour

Info

Publication number
FR2243153A1
FR2243153A1 FR7430430A FR7430430A FR2243153A1 FR 2243153 A1 FR2243153 A1 FR 2243153A1 FR 7430430 A FR7430430 A FR 7430430A FR 7430430 A FR7430430 A FR 7430430A FR 2243153 A1 FR2243153 A1 FR 2243153A1
Authority
FR
France
Prior art keywords
particles
alumina
silica
ultrafine particles
reoxidising
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
FR7430430A
Other languages
English (en)
Other versions
FR2243153B3 (fr
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.)
Electricity Council
Original Assignee
Electricity Council
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 Electricity Council filed Critical Electricity Council
Publication of FR2243153A1 publication Critical patent/FR2243153A1/fr
Application granted granted Critical
Publication of FR2243153B3 publication Critical patent/FR2243153B3/fr
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J37/00—Discharge tubes with provision for introducing objects or material to be exposed to the discharge, e.g. for the purpose of examination or processing thereof
    • H01J37/32—Gas-filled discharge tubes
    • H01J37/32009—Arrangements for generation of plasma specially adapted for examination or treatment of objects, e.g. plasma sources
    • H01J37/32055—Arc discharge
    • 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
    • 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
    • C01B33/181—Preparation of finely divided silica neither in sol nor in gel form; After-treatment thereof by a dry process
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
    • C01F7/00—Compounds of aluminium
    • C01F7/02—Aluminium oxide; Aluminium hydroxide; Aluminates
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
    • C01F7/00—Compounds of aluminium
    • C01F7/02—Aluminium oxide; Aluminium hydroxide; Aluminates
    • C01F7/30—Preparation of aluminium oxide or hydroxide by thermal decomposition or by hydrolysis or oxidation of aluminium compounds
    • C01F7/302—Hydrolysis or oxidation of gaseous aluminium compounds in the gaseous phase
    • 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
    • C09C1/28—Compounds of silicon
    • C09C1/30—Silicic acid
    • C09C1/3009—Physical treatment, e.g. grinding; treatment with ultrasonic vibrations
    • C09C1/3027—Drying, calcination
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Thermal Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • Analytical Chemistry (AREA)
  • Silicon Compounds (AREA)
  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
  • Oxygen, Ozone, And Oxides In General (AREA)
  • Compositions Of Oxide Ceramics (AREA)
FR7430430A 1973-09-10 1974-09-09 Ultrafine particles of silica or alumina - prepd by arc reducing coarse particles and reoxidising metal vapour Granted FR2243153A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4243473 1973-09-10

Publications (2)

Publication Number Publication Date
FR2243153A1 true FR2243153A1 (en) 1975-04-04
FR2243153B3 FR2243153B3 (fr) 1977-06-17

Family

ID=10424407

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7430430A Granted FR2243153A1 (en) 1973-09-10 1974-09-09 Ultrafine particles of silica or alumina - prepd by arc reducing coarse particles and reoxidising metal vapour

Country Status (6)

Country Link
JP (1) JPS50123598A (fr)
BE (1) BE819695A (fr)
DE (1) DE2443130A1 (fr)
FR (1) FR2243153A1 (fr)
IT (1) IT1020754B (fr)
NL (1) NL7411942A (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0024456A1 (fr) * 1977-08-11 1981-03-11 Elkem A/S Compositions de résines thermoplastiques contenant des charges et objets fabriqués à partir de celles-ci
EP0601453A2 (fr) * 1992-12-10 1994-06-15 Veitsch-Radex Aktiengesellschaft Für Feuerfeste Erzeugnisse Procédé pour la préparation des particules d'oxide d'alumine, poudre d'oxide d'alumine obtenue par ce procédé et l'utilisation de cette poudre
WO2001007363A1 (fr) * 1999-07-22 2001-02-01 Atofina Research Production de particules de silice
WO2015119508A1 (fr) * 2014-02-10 2015-08-13 Elkem As Procédé pour la production de particules d'oxyde d'aluminium

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NO337545B1 (no) * 2014-02-24 2016-05-02 Elkem As Fremgangsmåte for fremstilling av silisiumdioksidpartikler

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0024456A1 (fr) * 1977-08-11 1981-03-11 Elkem A/S Compositions de résines thermoplastiques contenant des charges et objets fabriqués à partir de celles-ci
EP0601453A2 (fr) * 1992-12-10 1994-06-15 Veitsch-Radex Aktiengesellschaft Für Feuerfeste Erzeugnisse Procédé pour la préparation des particules d'oxide d'alumine, poudre d'oxide d'alumine obtenue par ce procédé et l'utilisation de cette poudre
EP0601453A3 (fr) * 1992-12-10 1994-12-07 Veitsch Radex Ag Procédé pour la préparation des particules d'oxide d'alumine, poudre d'oxide d'alumine obtenue par ce procédé et l'utilisation de cette poudre.
WO2001007363A1 (fr) * 1999-07-22 2001-02-01 Atofina Research Production de particules de silice
US6495114B1 (en) 1999-07-22 2002-12-17 Fina Research, S.A. Production of silica particles
WO2015119508A1 (fr) * 2014-02-10 2015-08-13 Elkem As Procédé pour la production de particules d'oxyde d'aluminium
US9738540B2 (en) 2014-02-10 2017-08-22 Elkem As Process for the production of aluminium oxide particles

Also Published As

Publication number Publication date
DE2443130A1 (de) 1975-03-13
BE819695A (fr) 1974-12-31
FR2243153B3 (fr) 1977-06-17
NL7411942A (nl) 1975-03-12
IT1020754B (it) 1977-12-30
JPS50123598A (fr) 1975-09-29

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Legal Events

Date Code Title Description
ST Notification of lapse