IT1191068B - Procedimento per la preparazione di alfa-allumina povera di alcali per scopi ceramici - Google Patents

Procedimento per la preparazione di alfa-allumina povera di alcali per scopi ceramici

Info

Publication number
IT1191068B
IT1191068B IT24155/82A IT2415582A IT1191068B IT 1191068 B IT1191068 B IT 1191068B IT 24155/82 A IT24155/82 A IT 24155/82A IT 2415582 A IT2415582 A IT 2415582A IT 1191068 B IT1191068 B IT 1191068B
Authority
IT
Italy
Prior art keywords
alcals
procedure
preparation
alpha aluminum
ceramic purposes
Prior art date
Application number
IT24155/82A
Other languages
English (en)
Italian (it)
Other versions
IT8224155A0 (it
Inventor
Jozsef Matyasi
Gyorgy Kaptay
Laszlo Zsembery
Jozsef Toth
Bela Kokeny
Maria Toth Homostrei
Imre Penzes
Original Assignee
Magyar Aluminium
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 Magyar Aluminium filed Critical Magyar Aluminium
Publication of IT8224155A0 publication Critical patent/IT8224155A0/it
Application granted granted Critical
Publication of IT1191068B publication Critical patent/IT1191068B/it

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
    • C04B35/10—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on aluminium oxide
    • C04B35/111—Fine ceramics
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Inorganic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Compositions Of Oxide Ceramics (AREA)
  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
IT24155/82A 1981-11-10 1982-11-10 Procedimento per la preparazione di alfa-allumina povera di alcali per scopi ceramici IT1191068B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
HU813358A HU185474B (en) 1981-11-10 1981-11-10 Process for preparing alpha-aluminium oxyde poor in alkali for ceramic purposes

Publications (2)

Publication Number Publication Date
IT8224155A0 IT8224155A0 (it) 1982-11-10
IT1191068B true IT1191068B (it) 1988-02-24

Family

ID=10963719

Family Applications (1)

Application Number Title Priority Date Filing Date
IT24155/82A IT1191068B (it) 1981-11-10 1982-11-10 Procedimento per la preparazione di alfa-allumina povera di alcali per scopi ceramici

Country Status (8)

Country Link
US (1) US4477427A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
CS (1) CS244120B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
DD (1) DD205675A5 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
DE (1) DE3241582A1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
FR (1) FR2535703B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
GB (1) GB2108949B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
HU (1) HU185474B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
IT (1) IT1191068B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

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HU185474B (en) * 1981-11-10 1985-02-28 Almasfuezitoei Timfoeldgyar Process for preparing alpha-aluminium oxyde poor in alkali for ceramic purposes
US4623364A (en) * 1984-03-23 1986-11-18 Norton Company Abrasive material and method for preparing the same
US5383945A (en) * 1984-01-19 1995-01-24 Norton Company Abrasive material and method
FI79830C (fi) * 1985-07-15 1990-03-12 Norddeutsche Schleifmittel Ind Foerfarande foer framstaellning av keramiskt polykristallint slipmaterial.
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
DE3629100A1 (de) * 1986-08-27 1988-03-03 Bosch Gmbh Robert Elektrochemisch stabile keramik aus aluminiumoxid
US5302368A (en) * 1987-01-29 1994-04-12 Sumitomo Chemical Company, Limited Process for preparation of alumina
US4822592A (en) * 1987-02-05 1989-04-18 Aluminum Company Of America Producing alpha alumina particles with pressurized acidic steam
ES2004759A6 (es) * 1987-07-17 1989-02-01 Espanola Alumina Sa Metodo de obtencion de alumina especial a partir del polvo producido en la calcinacion de alumina metalurgica
HU210595B (en) * 1988-02-03 1995-05-29 Almasfuezitoei Timfoeldgyar Process for producing aluminiume-oxides using to the ceramic which contains smaller than 1 micrometer one-crystalsize grains, too
US5296085A (en) * 1989-09-21 1994-03-22 Atochem Macrocrystalline α-alumina hexagonal platelets
AU639326B2 (en) * 1990-05-23 1993-07-22 Atochem Ceramic preforms comprising monocrystalline hexagonal platelets of alpha-alumina, their production and applications thereof
CN1068092A (zh) * 1991-06-21 1993-01-20 瑞士隆萨股份公司 生产以α-氧化铝为基质的烧结材料特别是磨料的方法
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
US5438129A (en) * 1993-09-27 1995-08-01 Becton Dickinson And Company DNA purification by solid phase extraction using partially fluorinated aluminum hydroxide adsorbant
RU2136596C1 (ru) * 1993-11-25 1999-09-10 Сумитомо Кемикал Компани, Лимитед СПОСОБ ПОЛУЧЕНИЯ ПОРОШКА α--ОКСИДА АЛЮМИНИЯ И ПОРОШОК α--ОКСИДА АЛЮМИНИЯ
AU699077B2 (en) * 1995-02-21 1998-11-19 Sumitomo Chemical Company, Limited Alpha-alumina and method for producing the same
JPH09263440A (ja) * 1996-03-29 1997-10-07 Ngk Insulators Ltd アルミナ焼結体およびその製造方法
JP3457495B2 (ja) * 1996-03-29 2003-10-20 日本碍子株式会社 窒化アルミニウム焼結体、金属埋設品、電子機能材料および静電チャック
RU2117631C1 (ru) * 1997-07-11 1998-08-20 Российский химико-технологический университет им.Д.И.Менделеева Способ получения порошка оксида алюминия для изготовления прозрачной керамики
CN1241833C (zh) * 2000-10-20 2006-02-15 昭和电工株式会社 生产低碱氧化铝的方法及其设备
WO2003055803A2 (en) * 2001-12-27 2003-07-10 Showa Denko K.K. Particulate alumina, method for producing particulate alumina and composition containing particulate alumina
TW200503953A (en) * 2003-06-12 2005-02-01 Showa Denko Kk Method for producing particulate alumina and composition containing particulate alumina
CN1838991A (zh) * 2003-08-22 2006-09-27 联合碳化化学及塑料技术公司 改进的氧化铝载体和用于制造烯化氧的银基催化剂
US20060293180A1 (en) * 2003-08-22 2006-12-28 Thorsteinson Erlind M Modified alumina carriers and silver-based catalysts for the production of alkylene oxides
RU2360735C2 (ru) * 2003-10-16 2009-07-10 Дау Текнолоджи Инвестментс Ллс Катализаторы для получения алкиленоксидов, имеющие улучшенную стабильность, эффективность и/или активность
ATE554080T1 (de) 2004-06-18 2012-05-15 Shell Int Research Verfahren zur herstellung eines olefinoxids, 1,2- diols, a 1,2-diolethers oder alkanolamins
BRPI0512172A (pt) * 2004-06-18 2008-02-12 Shell Int Research processo para a produção de óxido de olefina, 1,2-diol, éter de 1,2-diol ou alcanolamina
WO2006028940A2 (en) * 2004-09-01 2006-03-16 Shell Internationale Research Maatschappij B.V. An 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
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
EP1850955A1 (en) * 2005-02-21 2007-11-07 Shell Internationale Researchmaatschappij B.V. An olefin epoxidation process, a catalyst for use in the process, a carrier for use in making the catalyst, and a process for making the carrier
CN100348494C (zh) * 2005-08-26 2007-11-14 郑州大学 一种高分散性α－Al2O3纳米粉体的制备方法
DE102006005400A1 (de) 2006-02-18 2007-08-23 Nabaltec Ag Verfahren zur Herstellung von gereinigtem Aluminiumoxid aus alkalihaltiger Tonerde
CN114772618B (zh) * 2022-03-28 2023-07-04 中铝山东有限公司 一种研抛用类球形α氧化铝的制备方法
GB2621394B (en) 2022-08-12 2024-12-04 Thermo Fisher Scient Bremen Gmbh Methods and Mass Spectrometry Systems for Acquiring Mass Spectral Data
GB2621393B (en) 2022-08-12 2024-12-25 Thermo Fisher Scient Bremen Gmbh Methods and mass spectrometry systems for acquiring mass spectral data
GB2621395B (en) 2022-08-12 2025-02-05 Thermo Fisher Scient Bremen Gmbh Methods and mass spectrometry systems for acquiring mass spectral data
CN117125731B (zh) * 2023-08-28 2024-04-26 福建明瑞科维新材料科技有限公司 一种降低氧化铝锻烧相变温度的矿化剂及其制备方法和应用

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US1950883A (en) * 1932-05-31 1934-03-13 Aluminum Co Of America Treatment of aluminum hydrate
US3092452A (en) * 1959-08-18 1963-06-04 Aluminum Co Of America Production of low-soda alumina
US3092453A (en) * 1959-08-18 1963-06-04 Aluminum Co Of America Production of low-soda alumina
GB1046582A (en) * 1964-03-04 1966-10-26 Gen Motors Ltd Improved method of producing alumina
US3262754A (en) * 1964-12-07 1966-07-26 Aluminium Lab Ltd Method of making low soda alumina of small crystal size
US4045234A (en) * 1976-08-23 1977-08-30 Kaiser Aluminum & Chemical Corporation Process for producing high density sintered alumina
DE2816194A1 (de) * 1978-04-14 1979-10-25 Giulini Chemie Sinteraktive und alkaliarme tonerde
CH654819A5 (de) * 1980-09-23 1986-03-14 Alusuisse Verfahren zur herstellung von grobkristallinem alpha-aluminiumoxid und dessen verwendung.
HU185474B (en) * 1981-11-10 1985-02-28 Almasfuezitoei Timfoeldgyar Process for preparing alpha-aluminium oxyde poor in alkali for ceramic purposes

Also Published As

Publication number Publication date
CS797482A2 (en) 1985-08-15
DE3241582C2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1991-07-25
IT8224155A0 (it) 1982-11-10
FR2535703B1 (fr) 1985-11-22
CS244120B2 (en) 1986-07-17
GB2108949B (en) 1985-03-06
DD205675A5 (de) 1984-01-04
GB2108949A (en) 1983-05-25
HU185474B (en) 1985-02-28
DE3241582A1 (de) 1983-06-01
US4477427A (en) 1984-10-16
FR2535703A1 (fr) 1984-05-11

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