GB1296049A - - Google Patents

Info

Publication number
GB1296049A
GB1296049A GB1296049DA GB1296049A GB 1296049 A GB1296049 A GB 1296049A GB 1296049D A GB1296049D A GB 1296049DA GB 1296049 A GB1296049 A GB 1296049A
Authority
GB
United Kingdom
Prior art keywords
dec
magnesium
dry
slurry
mixture
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
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 filed Critical
Publication of GB1296049A publication Critical patent/GB1296049A/en
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
    • C01F7/16—Preparation of alkaline-earth metal aluminates or magnesium aluminates; Aluminium oxide or hydroxide therefrom
    • C01F7/162—Magnesium aluminates
    • 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
    • C30B29/22—Complex oxides
    • C30B29/26—Complex oxides with formula BMe2O4, wherein B is Mg, Ni, Co, Al, Zn, or Cd and Me is Fe, Ga, Sc, Cr, Co, or Al

Landscapes

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

Abstract

1296049 Magnesium aluminate spinel W R GRACE & CO 11 Dec 1969 [16 Dec 1968] 60620/69 Heading C1A Magnesium aluminate spinel is prepared by feeding a mixture of magnesium and aluminium salts and/or oxides at an atomic ratio of Mg : Al of 1À001 : 2 to 1À217 : 2 to a fluid energy mill maintamed at a temperature above 700‹ C. The feed to mill may be in the form of a dry mixture, or aqueous solution, or an aqueous slurry. Suitable feedstocks include a dry mixtureof Al(OH) 3 and Mg(NO 3 ) 2 .6H 2 O, solutions of nitrates, nitrites, formates and acetates, or a slurry of oxides formed by precipitation from a solution of salts with ammonia may be included as part of the feedstock. The spinel powder recovered from the milling process may be calcined at a temperature 650‹ to 1100‹ C., pressed at a pressure of at least 10,000 p.s.i. and sintered at 1450‹ to 1650‹ C. to form ceramic bodies having 97 to 99% of theoretical density.
GB1296049D 1968-12-16 1969-12-11 Expired GB1296049A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US78416868A 1968-12-16 1968-12-16

Publications (1)

Publication Number Publication Date
GB1296049A true GB1296049A (en) 1972-11-15

Family

ID=25131567

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1296049D Expired GB1296049A (en) 1968-12-16 1969-12-11

Country Status (5)

Country Link
JP (1) JPS4843040B1 (en)
DE (1) DE1962338A1 (en)
FR (1) FR2026221B1 (en)
GB (1) GB1296049A (en)
NL (1) NL6918663A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4305170C1 (en) * 1993-02-19 1994-07-28 Daimler Benz Ag Spinel containing magnesium and aluminum, as well as processes for its synthesis and use
US5525561A (en) * 1993-10-29 1996-06-11 Programme 3 Patent Holdings Method of making spinel compounds
EP0990621A2 (en) * 1998-09-30 2000-04-05 Kabushiki Kaisha Toyota Chuo Kenkyusho Spinel powder and spinel slurry
CN111848184A (en) * 2020-07-30 2020-10-30 武汉理工大学 High-aluminum-content magnesia-alumina spinel transparent ceramic powder and preparation method thereof

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2642049C2 (en) * 1976-09-18 1984-07-12 Bayer Ag, 5090 Leverkusen Active anti-corrosive pigments based on iron oxide and their use
DE2721574C3 (en) * 1977-05-13 1981-06-11 Giulini Chemie Gmbh, 6700 Ludwigshafen Process for the production of magnesium spinel
US4459156A (en) * 1982-12-20 1984-07-10 The Dow Chemical Company Phosphate bonding of reactive spinels for use as refractory materials
DE19515490A1 (en) * 1995-04-27 1996-10-31 Abb Patent Gmbh Ceramic material and process for its manufacture

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4305170C1 (en) * 1993-02-19 1994-07-28 Daimler Benz Ag Spinel containing magnesium and aluminum, as well as processes for its synthesis and use
FR2701701A1 (en) * 1993-02-19 1994-08-26 Daimler Benz Ag MgAl2O4 over-stoichiometric spinel, as well as method for its synthesis and use of MgAl2O4 over-stoichiometric spinel.
US5492871A (en) * 1993-02-19 1996-02-20 Daimler-Benz Ag Superstoichiometric MgAl2 O4 spinel and use thereof, and process for the synthesis thereof
US5525561A (en) * 1993-10-29 1996-06-11 Programme 3 Patent Holdings Method of making spinel compounds
EP0990621A2 (en) * 1998-09-30 2000-04-05 Kabushiki Kaisha Toyota Chuo Kenkyusho Spinel powder and spinel slurry
EP0990621A3 (en) * 1998-09-30 2000-06-28 Kabushiki Kaisha Toyota Chuo Kenkyusho Spinel powder and spinel slurry
US6306360B1 (en) 1998-09-30 2001-10-23 Kabushiki Kaisha Toyota Chuo Kenkyusho Spinel powder and spinel slurry
CN111848184A (en) * 2020-07-30 2020-10-30 武汉理工大学 High-aluminum-content magnesia-alumina spinel transparent ceramic powder and preparation method thereof

Also Published As

Publication number Publication date
DE1962338A1 (en) 1970-11-12
FR2026221A1 (en) 1970-09-18
NL6918663A (en) 1970-06-18
JPS4843040B1 (en) 1973-12-15
FR2026221B1 (en) 1973-10-19

Similar Documents

Publication Publication Date Title
US3514252A (en) Process for the preparation of stabilized zirconia powders
GB1342893A (en) Production of ceria
GB1465111A (en) Process for producing a reactive a-alumina suitable for sintering
GB1225719A (en)
US3725094A (en) Doped alumina powder
GB1296049A (en)
GB1488042A (en) Methanol production catalyst precursor thereof and method for preparing the precursor
GB1397717A (en) Sinterable aluminium titanate powder
GB1366367A (en) Methanol synthesis catalysts
ES392168A1 (en) Preparation of iron oxide and hydrated iron oxide pigments
GB1311373A (en) Process for the preparation of alumina or magnesia-alumina bodies
GB1285190A (en) Improvements in ceramic fissile materials
GB1422451A (en) High strength alumina catalyst body
US3702882A (en) Process for the preparation of fine sized magnesium aluminate spinel
Nakagawa Characterization and sinterability of Mg-Al spinel powders prepared with a thermal decomposition of a freeze-dried sulphate
Mukherjee et al. Spinel formation from co-precipitated hydroxides of aluminium and magnesium
GB1289090A (en)
GB1423624A (en) Refractory grains
GB1283780A (en) A catalyst for the conversion of hydrocarbons and a method for effecting same
GB1476642A (en) Zirconium hydrous oxide product
Iida et al. Sintering of High‐Purity Nickel Oxide, II
GB1380721A (en) Production of ferrites
GB1305218A (en)
GB1181479A (en) Process for the preparation of Fine-Sized Aluminas
GB1346638A (en) Process for the preparation of a catalyst

Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees