DE68927106D1 - Kleine partikel und plättchen von alpha-aluminiumoxyd - Google Patents

Kleine partikel und plättchen von alpha-aluminiumoxyd

Info

Publication number
DE68927106D1
DE68927106D1 DE68927106T DE68927106T DE68927106D1 DE 68927106 D1 DE68927106 D1 DE 68927106D1 DE 68927106 T DE68927106 T DE 68927106T DE 68927106 T DE68927106 T DE 68927106T DE 68927106 D1 DE68927106 D1 DE 68927106D1
Authority
DE
Germany
Prior art keywords
oxyd
tablets
small particles
alpha aluminum
alpha
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.)
Expired - Fee Related
Application number
DE68927106T
Other languages
English (en)
Other versions
DE68927106T2 (de
Inventor
Steven Sucech
John Marhanka
Alan Pearson
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.)
Howmet Aerospace Inc
Original Assignee
Aluminum Company of America
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 Aluminum Company of America filed Critical Aluminum Company of America
Application granted granted Critical
Publication of DE68927106D1 publication Critical patent/DE68927106D1/de
Publication of DE68927106T2 publication Critical patent/DE68927106T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • 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
    • C01F7/04—Preparation of alkali metal aluminates; Aluminium oxide or hydroxide therefrom
    • C01F7/14—Aluminium oxide or hydroxide from alkali metal aluminates
    • C01F7/144—Aluminium oxide or hydroxide from alkali metal aluminates from aqueous aluminate solutions by precipitation due to cooling, e.g. as part of the Bayer process
    • 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
    • C01P2004/20—Particle morphology extending in two dimensions, e.g. plate-like
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/50—Agglomerated particles
    • 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
    • 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
    • C01P2006/12—Surface area

Landscapes

  • 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)
DE68927106T 1987-12-23 1989-06-19 Kleine partikel und plättchen von alpha-aluminiumoxyd Expired - Fee Related DE68927106T2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US07/137,159 US4847064A (en) 1987-12-23 1987-12-23 Economical process for alpha alumina production
PCT/US1989/002659 WO1990015777A1 (en) 1987-12-23 1989-06-19 Small sized alpha alumina particles and platelets

Publications (2)

Publication Number Publication Date
DE68927106D1 true DE68927106D1 (de) 1996-10-10
DE68927106T2 DE68927106T2 (de) 1997-04-03

Family

ID=22476070

Family Applications (1)

Application Number Title Priority Date Filing Date
DE68927106T Expired - Fee Related DE68927106T2 (de) 1987-12-23 1989-06-19 Kleine partikel und plättchen von alpha-aluminiumoxyd

Country Status (6)

Country Link
US (1) US4847064A (de)
EP (1) EP0429548B1 (de)
JP (1) JPH04500947A (de)
DE (1) DE68927106T2 (de)
HU (1) HUT57675A (de)
WO (1) WO1990015777A1 (de)

Families Citing this family (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4847064A (en) * 1987-12-23 1989-07-11 Aluminum Company Of America Economical process for alpha alumina production
US5225229A (en) * 1986-07-18 1993-07-06 Aluminum Company Of America Aluminum hydroxide production
FR2681850B1 (fr) * 1991-09-27 1994-03-18 Kodak Pathe Procede pour preparer des particules d'oxyde metallique.
US6521203B1 (en) 1992-06-02 2003-02-18 Sumitomo Chemical Co., Ltd. Process for producing α-alumina
SK281673B6 (sk) * 1992-06-02 2001-06-11 Sumitomo Chemical Company, Limited Alfa-oxid hlinitý a jeho použitie
US5342485A (en) * 1992-08-05 1994-08-30 Reynolds Metals Company Process for preparing ultra-white alumina trihydrate
US5312791A (en) * 1992-08-21 1994-05-17 Saint Gobain/Norton Industrial Ceramics Corp. Process for the preparation of ceramic flakes, fibers, and grains from ceramic sols
IL109236A (en) * 1993-04-13 1998-01-04 Sumitomo Chemical Co A-alumina powder and its production
JP3744010B2 (ja) * 1993-06-30 2006-02-08 住友化学株式会社 α−アルミナ粉末の製造方法
DE69425816T2 (de) * 1993-11-25 2001-04-26 Sumitomo Chemical Co., Ltd. Verfahren zur herstellung von alpha-aluminumoxid-pulver
EP0656319B1 (de) * 1993-11-25 2003-04-09 Sumitomo Chemical Company, Limited Verfahren zur Herstellung von Alpha-Aluminiumoxidpulver
EP0788571A4 (de) * 1994-08-23 1998-05-06 Reynolds Metals Co Verfahren zur herstellung von "ultraweissen" aluminatrihydraten
AU699077B2 (en) * 1995-02-21 1998-11-19 Sumitomo Chemical Company, Limited Alpha-alumina and method for producing the same
CA2377148C (en) * 1999-06-29 2008-05-06 Genoveva Bilandzic Process for the production of aluminium hydroxide
AU2003900030A0 (en) 2003-01-07 2003-01-23 Advanced Nano Technologies Pty Ltd Process for the production of ultrafine plate-like alumina particles
TW200422258A (en) * 2003-02-26 2004-11-01 Sumitomo Chemical Co Method for producing α-alumina powder
TW200503953A (en) * 2003-06-12 2005-02-01 Showa Denko Kk Method for producing particulate alumina and composition containing particulate alumina
JP4824569B2 (ja) 2003-10-16 2011-11-30 ダウ テクノロジー インベストメンツ リミティド ライアビリティー カンパニー アルキレンオキサイド製造用の増強された安定性、効率及び／又は活性を有する触媒
AT500550B1 (de) * 2004-01-29 2007-02-15 Rappold Winterthur Technologie Schleifkörperfertigungsverfahren mit feinstkornbindungssystemen
CN100586939C (zh) 2004-06-18 2010-02-03 国际壳牌研究有限公司 生产烯烃氧化物、1,2-二醇、1,2-二醇醚或链烷醇胺的方法
EP1765800B1 (de) 2004-06-18 2012-04-18 Shell Internationale Research Maatschappij B.V. Verfahren zur herstellung eines olefinoxids, 1,2-diols, a 1,2-diolethers oder alkanolamins
US8536083B2 (en) 2004-09-01 2013-09-17 Shell Oil Company Olefin epoxidation process, a catalyst for use in the process, a carrier for use in preparing the catalyst, and a process for preparing the carrier
JP5697298B2 (ja) 2004-09-01 2015-04-08 シエル・インターナシヨナル・リサーチ・マートスハツペイ・ベー・ヴエー オレフィンのエポキシ化方法、該方法に用いる触媒、該触媒の調製に用いる担体、および該担体の調製方法
CA2568555A1 (en) * 2005-11-24 2007-05-24 Sumitomo Chemical Company, Limited Gibbsite type aluminum hydroxide patricles
CN102502742B (zh) * 2011-11-07 2014-07-02 河南煤业化工集团研究院有限责任公司 一种拜尔法铝酸钠溶液制备高白氢氧化铝微粉的方法
CN103418443B (zh) * 2012-05-15 2016-04-27 中国石油化工股份有限公司 一种用于银催化剂的α-氧化铝成型载体的制备方法
WO2017057322A1 (ja) * 2015-09-30 2017-04-06 日本碍子株式会社 板状アルミナ粉末の製法
DE102016201947A1 (de) * 2016-02-10 2017-08-10 MTU Aero Engines AG Wärmedämmschicht mit hohem Korrosionswiderstand

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4051222A (en) * 1971-09-21 1977-09-27 Alcan Research And Development Limited Coarsening of partially calcined alumina dust
US3838980A (en) * 1972-01-12 1974-10-01 Alcan Res & Dev Precipitation of bayer alumina trihydrate suitable for the manufacture of ceramic grade alumina of improved grindability
JPS5037806A (de) * 1973-06-27 1975-04-08
US3899568A (en) * 1974-06-12 1975-08-12 Allied Chem Alumina removal from chromate leach liquors
US4175118A (en) * 1975-12-17 1979-11-20 Condea Chemie Gmbh Method for manufacturing a high porous alumina having a large surface area and a low bulk density
DE3308008C1 (de) * 1983-03-07 1984-10-11 Vereinigte Aluminium-Werke AG, 1000 Berlin und 5300 Bonn Verfahren zur Herstellung feinverteilter Dispersionen von Metalloxiden in Aluminiumhydroxid
JPS60103090A (ja) * 1983-11-07 1985-06-07 京セラ株式会社 高アルミナ含有焼結体及びその製造方法
ZA854133B (en) * 1984-06-14 1986-05-28 Norton Co Process for producing alumina bodies
US4568527A (en) * 1984-11-06 1986-02-04 Kaiser Aluminum & Chemical Corporation Utilization of partially calcined alumina as precipitation aid in the Bayer process
US4595581A (en) * 1984-12-10 1986-06-17 Aluminum Company Of America Boehmite production by precipitation from sodium aluminate solution at elevated temperatures
FR2579194B1 (fr) * 1985-03-20 1990-01-05 Pechiney Aluminium Procede et dispositif de decomposition sans agitation de liqueurs d'aluminate de sodium pour la production d'alumine
US4585645A (en) * 1985-04-03 1986-04-29 Aluminum Company Of America Alpha alumina production in a steam-fluidized reactor
US4657754A (en) * 1985-11-21 1987-04-14 Norton Company Aluminum oxide powders and process
JPH06104570B2 (ja) * 1985-12-06 1994-12-21 住友化学工業株式会社 アルミナ粉末の製造方法
US4847064A (en) * 1987-12-23 1989-07-11 Aluminum Company Of America Economical process for alpha alumina production
US4822593A (en) * 1986-12-11 1989-04-18 Aluminum Company Of America Control of form of crystal precipitation of aluminum hydroxide using cosolvents and varying caustic concentration

Also Published As

Publication number Publication date
HU896253D0 (en) 1991-08-28
EP0429548B1 (de) 1996-09-04
EP0429548A1 (de) 1991-06-05
EP0429548A4 (en) 1991-11-21
DE68927106T2 (de) 1997-04-03
HUT57675A (en) 1991-12-30
WO1990015777A1 (en) 1990-12-27
US4847064A (en) 1989-07-11
JPH04500947A (ja) 1992-02-20

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee