JPS5215498A - Process for production of granular corrundum - Google Patents

Process for production of granular corrundum

Info

Publication number
JPS5215498A
JPS5215498A JP50091042A JP9104275A JPS5215498A JP S5215498 A JPS5215498 A JP S5215498A JP 50091042 A JP50091042 A JP 50091042A JP 9104275 A JP9104275 A JP 9104275A JP S5215498 A JPS5215498 A JP S5215498A
Authority
JP
Japan
Prior art keywords
corrundum
granular
production
particle size
high purity
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
JP50091042A
Other languages
Japanese (ja)
Other versions
JPS5722886B2 (en
Inventor
Naoaki Oishi
Toshiaki Sakaida
Hikari Hasegawa
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.)
Resonac Holdings Corp
Original Assignee
Showa Denko 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 Showa Denko KK filed Critical Showa Denko KK
Priority to JP50091042A priority Critical patent/JPS5215498A/en
Priority to FR7620704A priority patent/FR2319580A1/en
Priority to DE2633045A priority patent/DE2633045C3/en
Priority to NL7608344A priority patent/NL7608344A/en
Priority to GB31508/76A priority patent/GB1552943A/en
Publication of JPS5215498A publication Critical patent/JPS5215498A/en
Priority to US05/862,138 priority patent/US4193768A/en
Publication of JPS5722886B2 publication Critical patent/JPS5722886B2/ja
Granted legal-status Critical Current

Links

Classifications

    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D9/00—Crystallisation
    • B01D9/0036—Crystallisation on to a bed of product crystals; Seeding
    • C—CHEMISTRY; METALLURGY
    • C30—CRYSTAL GROWTH
    • C30B—SINGLE-CRYSTAL GROWTH; UNIDIRECTIONAL SOLIDIFICATION OF EUTECTIC MATERIAL OR UNIDIRECTIONAL DEMIXING OF EUTECTOID MATERIAL; REFINING BY ZONE-MELTING OF MATERIAL; PRODUCTION OF A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; SINGLE CRYSTALS OR HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; AFTER-TREATMENT OF SINGLE CRYSTALS OR A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; APPARATUS THEREFOR
    • C30B29/00—Single crystals or homogeneous polycrystalline material with defined structure characterised by the material or by their shape
    • C30B29/10—Inorganic compounds or compositions
    • C30B29/16—Oxides
    • C30B29/20—Aluminium oxides
    • C—CHEMISTRY; METALLURGY
    • C30—CRYSTAL GROWTH
    • C30B—SINGLE-CRYSTAL GROWTH; UNIDIRECTIONAL SOLIDIFICATION OF EUTECTIC MATERIAL OR UNIDIRECTIONAL DEMIXING OF EUTECTOID MATERIAL; REFINING BY ZONE-MELTING OF MATERIAL; PRODUCTION OF A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; SINGLE CRYSTALS OR HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; AFTER-TREATMENT OF SINGLE CRYSTALS OR A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; APPARATUS THEREFOR
    • C30B9/00—Single-crystal growth from melt solutions using molten solvents
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/01—Particle morphology depicted by an image
    • C01P2004/03—Particle morphology depicted by an image obtained by SEM
    • 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
    • C01P2004/60—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
    • 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
    • C01P2006/12—Surface area

Abstract

PURPOSE: Process to produce effectively granular corrundum with good crystallinity, high purity, and uniform particle size.
COPYRIGHT: (C)1977,JPO&Japio
JP50091042A 1975-07-28 1975-07-28 Process for production of granular corrundum Granted JPS5215498A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
JP50091042A JPS5215498A (en) 1975-07-28 1975-07-28 Process for production of granular corrundum
FR7620704A FR2319580A1 (en) 1975-07-28 1976-07-07 PREPARATION OF CORUNDUM PARTICLES
DE2633045A DE2633045C3 (en) 1975-07-28 1976-07-22 Process for the hydrothermal production of corundum particles
NL7608344A NL7608344A (en) 1975-07-28 1976-07-27 METHOD FOR THE PREPARATION OF CORNEL PARTICLES.
GB31508/76A GB1552943A (en) 1975-07-28 1976-07-28 Method for preparing corundum particles
US05/862,138 US4193768A (en) 1975-07-28 1977-12-19 Method for preparing corundum particles

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP50091042A JPS5215498A (en) 1975-07-28 1975-07-28 Process for production of granular corrundum

Publications (2)

Publication Number Publication Date
JPS5215498A true JPS5215498A (en) 1977-02-05
JPS5722886B2 JPS5722886B2 (en) 1982-05-15

Family

ID=14015436

Family Applications (1)

Application Number Title Priority Date Filing Date
JP50091042A Granted JPS5215498A (en) 1975-07-28 1975-07-28 Process for production of granular corrundum

Country Status (5)

Country Link
JP (1) JPS5215498A (en)
DE (1) DE2633045C3 (en)
FR (1) FR2319580A1 (en)
GB (1) GB1552943A (en)
NL (1) NL7608344A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04328163A (en) * 1991-04-26 1992-11-17 Shin Etsu Chem Co Ltd Heat conductive silicone rubber composition
WO1993024682A1 (en) * 1992-06-02 1993-12-09 Sumitomo Chemical Company, Limited α-ALUMINA
JP2002348116A (en) * 2001-05-30 2002-12-04 Showa Denko Kk Alumina particle and method for producing the same
JP2002348115A (en) * 2001-05-30 2002-12-04 Showa Denko Kk Alumina particle and method for producing the same

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59194185U (en) * 1983-05-31 1984-12-24 ソニー株式会社 tape cassette
JPS6093690A (en) * 1983-10-26 1985-05-25 Matsushita Electric Ind Co Ltd Tape cassette
JPS62248184A (en) * 1987-03-26 1987-10-29 Sony Corp Tape cassette
FR2652075B1 (en) * 1989-09-21 1991-12-06 Atochem ALPHA ALUMINA MACROCRYSTALS IN THE FORM OF PLATES AND PROCESS FOR OBTAINING SAME.

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04328163A (en) * 1991-04-26 1992-11-17 Shin Etsu Chem Co Ltd Heat conductive silicone rubber composition
WO1993024682A1 (en) * 1992-06-02 1993-12-09 Sumitomo Chemical Company, Limited α-ALUMINA
WO1993024681A1 (en) * 1992-06-02 1993-12-09 Sumitomo Chemical Company, Limited α-ALUMINA
JP2002348116A (en) * 2001-05-30 2002-12-04 Showa Denko Kk Alumina particle and method for producing the same
JP2002348115A (en) * 2001-05-30 2002-12-04 Showa Denko Kk Alumina particle and method for producing the same

Also Published As

Publication number Publication date
DE2633045C3 (en) 1982-04-08
GB1552943A (en) 1979-09-19
JPS5722886B2 (en) 1982-05-15
FR2319580B3 (en) 1981-12-18
DE2633045A1 (en) 1977-02-17
NL7608344A (en) 1977-02-01
DE2633045B2 (en) 1980-12-18
FR2319580A1 (en) 1977-02-25

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