KR960031343A - α-알루미나 및 그의 제법 - Google Patents

α-알루미나 및 그의 제법 Download PDF

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Publication number
KR960031343A
KR960031343A KR1019960003946A KR19960003946A KR960031343A KR 960031343 A KR960031343 A KR 960031343A KR 1019960003946 A KR1019960003946 A KR 1019960003946A KR 19960003946 A KR19960003946 A KR 19960003946A KR 960031343 A KR960031343 A KR 960031343A
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South Korea
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alumina
aluminum hydroxide
less
pulverized
ppm
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KR1019960003946A
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English (en)
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신지 후지와라
히로시 다부찌
마사히데 모오리
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고오사이 아끼오
스미또모가가꾸고오교 가부시끼가이샤
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Publication of KR960031343A publication Critical patent/KR960031343A/ko

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    • 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
    • C01F7/44—Dehydration of aluminium oxide or hydroxide, i.e. all conversions of one form into another involving a loss of water
    • C01F7/441—Dehydration of aluminium oxide or hydroxide, i.e. all conversions of one form into another involving a loss of water by calcination
    • C01F7/442—Dehydration of aluminium oxide or hydroxide, i.e. all conversions of one form into another involving a loss of water by calcination in presence of a calcination additive
    • 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
    • C01F7/46—Purification of aluminium oxide, aluminium hydroxide or aluminates
    • 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
    • C01P2004/52—Particles with a specific particle size distribution highly monodisperse 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
    • C01P2004/00—Particle morphology
    • C01P2004/60—Particles characterised by their size
    • C01P2004/62—Submicrometer sized, i.e. from 0.1-1 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
    • C01P2006/80—Compositional purity
    • 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
    • C01P2006/90—Other properties not specified above

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Inorganic Chemistry (AREA)
  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)

Abstract

바이어법에 의한 수산화 알루미늄 또는 이 바이어법에 의한 수산화 알루미늄은 가소하여 수득되는 천이 알루미나를 분쇄하고, 이어서 염화수소기체를 1체적%이상, 혹은 염소기체를 1체적% 이상 및 수증기를 0.1체적%이상 함유하는 분위기 기체중에서 600∼1400℃의 온도에서 소성하는 α-알루미나의 제조방법 및 이 방법에 의해 수득된 알루미나 순도가 99.8중량%이상, 나트륨 함유량이 40ppm이하, 철 함유량이 20ppm 이하인 분말상의 α-알루미나.

Description

α-알루미나 및 그의 제법
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음

Claims (11)

  1. 바이어법에 의한 수산화 알루미늄 또는 이 바이어법에 의한 수산화 알루미늄을 가소하여 수득되는 천이 알루미나를 분쇄하고, 이어서 염화 수소 기체를 1체적% 이상, 혹은 염소 기체를 1체적% 이상 및 수증기를 0.1체적% 이상 함유하는 분위기 기체중에서, 600∼1400℃의 온도에서 소성하는 α-알루미나의 제조방법.
  2. 제1항에 있어서, 소성한 후에 세정하는 α-알루미나의 제조방법.
  3. 제1항에 있어서, 바이어법에 의한 수산화 알루미늄 또는 이 바이어법에 의한 수산화 알루미늄을 가소하여 수득되는 천이 알루미나를 누적 입도 분포의 50% 지름이 10㎛ 이하로 분쇄하는 α-알루미나의 제조방법.
  4. 제1항에 있어서, 바이어법에 의한 수산화 알루미늄 또는 이 바이어법에 의한 수산화 알루미늄을 가소하여 수득되는 천이 알루미나를 누적입도 분포의 50% 지름이 5㎛ 이하로 분쇄하는 α-알루미나의 제조방법.
  5. 제1항에 있어서, 800∼1200℃의 온도에서 소성하는 α-알루미나의 제조방법.
  6. 제2항에 있어서, 소성한 후에, 물로 세정하는 것을 특징으로 하는 α-알루미나의 제조방법.
  7. 바이어법에 의한 수산화 알루미늄 또는 이 바이어법에 의한 수산화 알루미늄을 가소하여 수득되는 천이 알루미나를 분쇄하고, 이어서 염화 수소 기체를 1체적% 이상, 혹은 염소 기체를 1체적%이상 및 수증기를 0.1체적% 이상 함유하는 분위기 기체 중에서 600∼1400℃의 온도에서 소성함으로써 수득된 알루미나 순도가 99.8중량% 이상, 나트륨 함유량이 40ppm 이하, 철 함유량이 20ppm 이하인 분말상의 α-알루미나.
  8. 제7항에 있어서, 칼슘 함유량이 40ppm 이하인 분말상의 α-알루미나.
  9. 제7항에 있어서, 칼슘 함유량이 10ppm 이하인 분말상의 α-알루미나.
  10. 제7항에 있어서, 나트륨 함유량이 10ppm 이하인 분말상의 α-알루미나.
  11. 제7항에 있어서, 철 함유량이 10ppm 이하인 분말상의 α-알루미나.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019960003946A 1995-02-21 1996-02-17 α-알루미나 및 그의 제법 KR960031343A (ko)

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JP3226495 1995-02-21
JP95-32264 1995-02-21

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US (1) US6162413A (ko)
EP (1) EP0728700B1 (ko)
KR (1) KR960031343A (ko)
CN (1) CN1059178C (ko)
AU (1) AU699077B2 (ko)
CA (1) CA2169891A1 (ko)
DE (1) DE69604712T2 (ko)

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Also Published As

Publication number Publication date
EP0728700A2 (en) 1996-08-28
AU699077B2 (en) 1998-11-19
DE69604712T2 (de) 2000-03-02
EP0728700B1 (en) 1999-10-20
EP0728700A3 (en) 1997-07-02
CN1137489A (zh) 1996-12-11
DE69604712D1 (de) 1999-11-25
CA2169891A1 (en) 1996-08-22
AU4446896A (en) 1996-08-29
CN1059178C (zh) 2000-12-06
US6162413A (en) 2000-12-19

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