GB1503073A - Process for producing alpha-aluminia - Google Patents

Process for producing alpha-aluminia

Info

Publication number
GB1503073A
GB1503073A GB3970/76A GB397076A GB1503073A GB 1503073 A GB1503073 A GB 1503073A GB 3970/76 A GB3970/76 A GB 3970/76A GB 397076 A GB397076 A GB 397076A GB 1503073 A GB1503073 A GB 1503073A
Authority
GB
United Kingdom
Prior art keywords
alumina
alpha
activated
aqueous medium
aluminium
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
GB3970/76A
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.)
Chemokomplex Vegyipari Gep es Berendezes Export Import Vallalat
Original Assignee
Chemokomplex Vegyipari Gep es Berendezes Export Import Vallalat
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 Chemokomplex Vegyipari Gep es Berendezes Export Import Vallalat filed Critical Chemokomplex Vegyipari Gep es Berendezes Export Import Vallalat
Publication of GB1503073A publication Critical patent/GB1503073A/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
    • C01F7/42—Preparation of aluminium oxide or hydroxide from metallic aluminium, e.g. by oxidation
    • C01F7/428—Preparation of aluminium oxide or hydroxide from metallic aluminium, e.g. by oxidation by oxidation in an aqueous solution
    • 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
    • C01P2006/12—Surface area
    • 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
    • C01P2006/20—Powder free flowing behaviour
    • 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
    • C01P2006/21—Attrition-index or crushing strength of granulates

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)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

1503073 Alpha-alumina CHEMOKOMPLEX VEGYIPARI GEP ES BERENDEZES EXPORT-IMPORT VALLALAT 2 Feb 1976 [3 Feb 1975] 03970/76 Heading C1A Alpha-alumina is made by activating aluminium of at least 99À5% purity by stripping its oxide layer in an aqueous medium of acidic pH, washing in an aqueous medium of neutral pH and reacting the activated aluminium in an aqueous medium of alkaline, neutral or acidic pH to give hydrated alumina which is subsequently ignited to form the alumina product. The aluminium starting material is preferably of at least 8 cm.<SP>2</SP>/g. surface area and is activated at pH 5-6. The activated and washed metal is then transformed to hydrated alumina in the presence of water. In the examples this hydrated alumina is heated at various temperatures to obtain gamma alumina, mixtures of gamma and alpha alumina, or alpha alumina depending on the temperature of ignition.
GB3970/76A 1975-02-03 1976-02-02 Process for producing alpha-aluminia Expired GB1503073A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
HU75PU00000193A HU171506B (en) 1975-02-03 1975-02-03 Process for preparing aluminium oxide

Publications (1)

Publication Number Publication Date
GB1503073A true GB1503073A (en) 1978-03-08

Family

ID=11000650

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3970/76A Expired GB1503073A (en) 1975-02-03 1976-02-02 Process for producing alpha-aluminia

Country Status (8)

Country Link
JP (1) JPS5929526B2 (en)
AU (1) AU501514B2 (en)
CA (1) CA1086025A (en)
CH (1) CH597097A5 (en)
DE (1) DE2604083C3 (en)
FR (1) FR2299272A1 (en)
GB (1) GB1503073A (en)
HU (1) HU171506B (en)

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3003952A (en) * 1957-11-04 1961-10-10 Engelhard Ind Inc Manufacture of platinum-alumina reforming catalyst
SE412031B (en) * 1971-05-25 1980-02-18 Abildgaard Lab PERMITTED BOOK AND SET TO MAKE FAST

Also Published As

Publication number Publication date
FR2299272B1 (en) 1981-09-18
FR2299272A1 (en) 1976-08-27
CH597097A5 (en) 1978-03-31
HU171506B (en) 1978-01-28
CA1086025A (en) 1980-09-23
AU1068076A (en) 1977-08-04
DE2604083C3 (en) 1981-09-03
JPS51100995A (en) 1976-09-06
AU501514B2 (en) 1979-06-21
JPS5929526B2 (en) 1984-07-21
DE2604083A1 (en) 1976-08-05
DE2604083B2 (en) 1980-07-10

Similar Documents

Publication Publication Date Title
JPS5257093A (en) Recovering process for hydrate of magnesium chloride and potassium chloride from karnarite and bishopharite
JPS51139691A (en) Recovering method of protein from aqueous protein solution
GB1544327A (en) Process for producing aqueous emulsions of vinyl chloride/vinyl acetate/ethylene terpolymers
PT71003A (en) PROCESS FOR THE PRODUCTION OF HIGH-PURITY MAGNESIUM OXIDE
GB1503073A (en) Process for producing alpha-aluminia
CH613971A5 (en) Process for the purification of 7-acylamido- or 7-amino-3-(substituted)-3-cephemcarboxylic acids
JPS5416398A (en) Production of low soda alumina
IT1089008B (en) PRODUCTION PROCESS OF ALUMINUM OXIDE CONTAINING FROM 0.01% TO 25% OF CHROMIUM OXIDE AND / OR IRON OXIDE
IL49163A (en) Process of producing aqueous solutions of magnesium chloride
GB2001999B (en) Treatment of aqueous solutions of partially hydrolyzed polyacrylamides
JPS5334827A (en) Production of stabilized iron oxide pigment
CH546706A (en) PROCESS FOR THE ELIMINATION OF ZINC FROM INDUSTRIAL SODIUM ALUMINATE LIQUEURS.
AT353566B (en) PROCESS FOR THE THERMAL DECOMPOSITION OF Aqueous, SALT-ACID IRON (III) CHLORIDE SOLUTIONS
ATE17573T1 (en) PROCESS FOR PRODUCTION OF PURE DIACETONITRILE.
GB1456101A (en) Process for dehydrating aqueous solutions of maleic acid to maleic anhydride
IL49164A0 (en) Process of concentrating aqueous solutions containing magnesium chloride
ZA763283B (en) Continuous process for the production of cyclohexyl magnesium halides
IL36399A0 (en) Production of concentrated hydrogen chloride from aqueous solutions thereof
YU281376A (en) Production of 1,2-dichlorethene by purification of dichloroethane recycle
FR2186958A6 (en) Anhyd non-hygroscopic magnesium potassium sulphate - prepd by heating schoenite or leonite
IL51759A (en) Production of highly concentrated magnesium chloride solutions
HU173150B (en) Process for the treatment of sodium aluminate liquor formed in the alum earth production, based on the polymorphism of dicalcium silicate
PT65096B (en) Process for the production of chromone-2-carboxylic acids
GB2048843B (en) Process for the production of magnesium oxide from brine or bittern
JPS53130297A (en) Production of basic sluminum chloride

Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee