ES8101022A1 - Procedimiento de fabricacion de oxido de aluminio macrocris-talino - Google Patents

Procedimiento de fabricacion de oxido de aluminio macrocris-talino

Info

Publication number
ES8101022A1
ES8101022A1 ES484805A ES484805A ES8101022A1 ES 8101022 A1 ES8101022 A1 ES 8101022A1 ES 484805 A ES484805 A ES 484805A ES 484805 A ES484805 A ES 484805A ES 8101022 A1 ES8101022 A1 ES 8101022A1
Authority
ES
Spain
Prior art keywords
aluminum oxide
manufacture
microns
grain size
macrocrystalline aluminum
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
Application number
ES484805A
Other languages
English (en)
Other versions
ES484805A0 (es
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.)
BK Giulini Chemie GmbH
Original Assignee
Giulini Chemie GmbH
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 Giulini Chemie GmbH filed Critical Giulini Chemie GmbH
Publication of ES484805A0 publication Critical patent/ES484805A0/es
Publication of ES8101022A1 publication Critical patent/ES8101022A1/es
Expired 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
    • 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
    • C30B1/00—Single-crystal growth directly from the solid state
    • C30B1/10—Single-crystal growth directly from the solid state by solid state reactions or multi-phase diffusion
    • 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
    • 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
    • C01P2004/22—Particle morphology extending in two dimensions, e.g. plate-like with a polygonal circumferential shape
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/54—Particles characterised by their aspect ratio, i.e. the ratio of sizes in the longest to the shortest dimension
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Inorganic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
  • Compositions Of Oxide Ceramics (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)

Abstract

PROCEDIMIENTO DE OBTENCION DE OXIDO DE ALUMINIO MACROCRISTALINO. CONSTA DE LAS SIGUIENTES OPERACIONES: 1. CALCUNACION DE HIDROXIDO DE ALUMINIO EN PRESENCIA DE UN COMPUESTO DE FLUOR EN CANTIDADES COMPRENDIDAS ENTRE 0,001 Y 0,5 POR 100 DE SU PESO, CONTENIENDO UN MINERALIZADOR A UNA TEMPERATURA SUPERIOR A LOS 1.200 GRADOS, PARA ELLO SE CALCINA UN HIDROXIDO DE ALUMINIO CUYAS PARTICULAS DEBEN TENER UN TAMAÑO MEDIO DE 60 MUM., SIENDO LA TEMPERATURA MAXIMA DE 1.450 GRADOS. 2. SEPARACION DE LA FRACCION GRANULOMETRICA DEL PRODUCTO CALCINADO OBTENIDO. EL PROCESO DE CALCINACION SE REALIZA EN PRESENCIA DEL 5 AL 50 POR 100 DEL PESO RESPECTO AL PRODUCTO ACABADO DE UNA SEMILLA O SIEMBRA APROPIADA. EL PROCESO DE CALCINACION SE REALIZA EN UN HORNO AL QUE SE PROPORCIONA UNA ATMOSFERA REDUCTORA QUE PUEDE OBTENERSE POR ADICION Y CALCINACION EN EL HORNO DE SULFATO DE ALUMINIO EN CANTIDADES COMPRENDIDAS ENTRE 1 Y 10 POR 100 DEL PESO EN RELACION CON EL PRODUCTO ACABADO. EL PROCESO DE CALCINACION SE REALIZA EN PRESENCIA DE ESCORIAS PROCEDENTES DE LA OBTENCION DE ALUMINIO METALICO. I
ES484805A 1978-11-18 1979-10-06 Procedimiento de fabricacion de oxido de aluminio macrocris-talino Expired ES8101022A1 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2850064A DE2850064B1 (de) 1978-11-18 1978-11-18 Hexagonale tafelfoermige alpha-Aluminiumoxid-Einkristalle und Verfahren zu ihrer Herstellung

Publications (2)

Publication Number Publication Date
ES484805A0 ES484805A0 (es) 1980-12-01
ES8101022A1 true ES8101022A1 (es) 1980-12-01

Family

ID=6055000

Family Applications (1)

Application Number Title Priority Date Filing Date
ES484805A Expired ES8101022A1 (es) 1978-11-18 1979-10-06 Procedimiento de fabricacion de oxido de aluminio macrocris-talino

Country Status (8)

Country Link
US (1) US4308088A (es)
JP (1) JPS5819640B2 (es)
CA (1) CA1144454A (es)
DE (1) DE2850064B1 (es)
ES (1) ES8101022A1 (es)
FR (1) FR2441584A1 (es)
GB (1) GB2035281B (es)
IT (1) IT1124244B (es)

Families Citing this family (37)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH654819A5 (de) * 1980-09-23 1986-03-14 Alusuisse Verfahren zur herstellung von grobkristallinem alpha-aluminiumoxid und dessen verwendung.
DE3212297C2 (de) * 1982-03-29 1984-12-13 Schweizerische Aluminium Ag, Chippis Verfahren zur Herstellung grobkristalliner Tonerde
JPS58179550U (ja) * 1982-05-20 1983-12-01 オムロン株式会社 キヤツシユレジスタ
JPS6038486A (ja) * 1983-08-11 1985-02-28 Showa Denko Kk 研磨用微粉
US4491471A (en) * 1984-01-16 1985-01-01 Reynolds Metals Company Composite pellet for use as a carbothermic reduction feed
US4568363A (en) * 1985-03-08 1986-02-04 Dresser Industries, Inc. Method for making sintered aluminous abrasive particles
CA1254238A (en) * 1985-04-30 1989-05-16 Alvin P. Gerk Process for durable sol-gel produced alumina-based ceramics, abrasive grain and abrasive products
JPS61256963A (ja) * 1985-05-09 1986-11-14 株式会社　リケン 高強度アルミナ焼結体及びその製造方法
US5340781A (en) * 1986-07-14 1994-08-23 Showa Denko Kabushiki Kaisha Spherical corundum particles, process for preparation thereof and rubber or plastic composition having high thermal conductivity and having spherical corundum paticles incorporated therein
JPH01282195A (ja) * 1988-05-09 1989-11-14 Nippon Kenmazai Kogyo Kk アルミナ質単結晶粒とその製造方法及び研磨具
US5296085A (en) * 1989-09-21 1994-03-22 Atochem Macrocrystalline α-alumina hexagonal platelets
FR2652075B1 (fr) * 1989-09-21 1991-12-06 Atochem Macrocristaux d'alumine alpha sous forme de plaquettes et procede d'obtention.
AU639326B2 (en) * 1990-05-23 1993-07-22 Atochem Ceramic preforms comprising monocrystalline hexagonal platelets of alpha-alumina, their production and applications thereof
US5580673A (en) * 1993-01-19 1996-12-03 Energy Research Corporation Carbonate fuel cell matrix
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
WO1995014638A1 (en) * 1993-11-25 1995-06-01 Sumitomo Chemical Company, Limited PROCESS FOR PRODUCING α-ALUMINA POWDER
DE69432451T2 (de) * 1993-11-25 2004-03-11 Sumitomo Chemical Co., Ltd. Verfahren zur Herstellung von Alpha-Aluminiumoxidpulver
JP3416855B2 (ja) * 1994-04-15 2003-06-16 株式会社フジミインコーポレーテッド 研磨用組成物および研磨方法
AU699077B2 (en) * 1995-02-21 1998-11-19 Sumitomo Chemical Company, Limited Alpha-alumina and method for producing the same
JP3609144B2 (ja) * 1995-03-22 2005-01-12 昭和電工株式会社 アルミナ質焼結砥粒およびその製造方法
JP3777472B2 (ja) * 1996-07-22 2006-05-24 東海高熱工業株式会社 高エネルギー注入型セラミック抵抗体の製造方法
FR2755435A1 (fr) * 1996-11-04 1998-05-07 Pechiney Aluminium Fabrication d'alumine calcinee a taille de cristallite reglee a la demande avec une faible dispersion
US5869203A (en) * 1996-12-13 1999-02-09 Energy Research Corporation Electrolyte matrix for molten carbonate fuel cells
CN1294081C (zh) * 1999-12-27 2007-01-10 昭和电工株式会社 氧化铝粒子、其制造方法、含有该粒子的组合物和研磨用氧化铝料浆
US7067105B2 (en) * 1999-12-27 2006-06-27 Showa Denko K.K. Alumina particles, production process thereof, composition comprising the particles and alumina slurry for polishing
US6887811B2 (en) * 2001-05-30 2005-05-03 Showa Denko K.K. Spherical alumina particles and production process thereof
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
TWI348457B (en) * 2003-03-04 2011-09-11 Sumitomo Chemical Co Method for producing 帢-alumina particulate
US20050116395A1 (en) * 2003-12-02 2005-06-02 Shun-Yuan Tsai Method for aluminum residue ash recycling utilization
RU2009120540A (ru) * 2006-11-01 2010-12-10 Дау Глобал Текнолоджиз Инк. (Us) Формованные пористые элементы из альфа-оксида алюминия и способы их получения
KR100803049B1 (ko) * 2007-08-31 2008-02-22 (주)제이피에스 마이크로텍 마이크로파를 이용한 박편상의 산화알루미늄 제조방법
CN105293546A (zh) * 2014-06-26 2016-02-03 沈阳铝镁设计研究院有限公司 一种气态悬浮焙烧炉正负压两段操作工艺方法
CN108560052B (zh) * 2018-04-26 2020-05-01 闽江学院 一种单晶六方氧化铝的制备方法及其应用
CN110407238A (zh) * 2019-08-23 2019-11-05 济南大学 一种晶种法制备片状氧化铝晶体的方法
CN115820002A (zh) * 2022-12-30 2023-03-21 郑州玉发精瓷科技有限公司 原位合成水不溶性矿化剂

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2538959A (en) * 1947-02-12 1951-01-23 Archibald H Ballard Process for molding refractory oxides
US3011870A (en) * 1958-09-05 1961-12-05 Union Carbide Corp Process for preparing virtually perfect alumina crystals
DE1092457B (de) * 1959-06-03 1960-11-10 Giulini Ges Mit Beschraenkter Verfahren zur Herstellung einer natronarmen Tonerde
US3121623A (en) 1961-03-17 1964-02-18 Nesin Asher Method of making crystalline alumina lapping powder
US3175883A (en) * 1961-06-05 1965-03-30 Aluminium Lab Ltd Process for reducing the soda content of alumina
AT266780B (de) * 1967-05-19 1968-11-25 Giulini Gmbh Geb Verfahren zur Herstellung von natriumoxydarmem α-Aluminiumoxyd
FR2036842A1 (en) * 1969-04-09 1970-12-31 Giulini Gmbh Geb Aluminium oxide low in sodium oxide, prodn
US3718494A (en) * 1971-03-04 1973-02-27 Du Pont Sheet-like alpha aluminum oxide
DE2136349C3 (de) * 1971-07-21 1978-11-02 Deutsche Gold- Und Silber-Scheideanstalt Vormals Roessler, 6000 Frankfurt Verfahren zur Herstellung von Keramikkörpern aus grobkristallinem Aluminiumoxid mit hoher Bruchfestigkeit
JPS5037806A (es) * 1973-06-27 1975-04-08
DE2623482C2 (de) * 1976-05-26 1985-06-27 Alcoa Chemie GmbH, 6700 Ludwigshafen Verfahren zur Herstellung eines kristallinen Aluminiumoxids für Polier-, Läpp- und Schleifmittel

Also Published As

Publication number Publication date
GB2035281B (en) 1982-11-24
CA1144454A (en) 1983-04-12
GB2035281A (en) 1980-06-18
JPS5571697A (en) 1980-05-29
US4308088A (en) 1981-12-29
IT7912826A0 (it) 1979-11-16
FR2441584A1 (fr) 1980-06-13
ES484805A0 (es) 1980-12-01
FR2441584B1 (es) 1982-11-05
JPS5819640B2 (ja) 1983-04-19
IT1124244B (it) 1986-05-07
DE2850064B1 (de) 1980-05-08

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