FR2036842A1 - Aluminium oxide low in sodium oxide, prodn - Google Patents

Aluminium oxide low in sodium oxide, prodn

Info

Publication number
FR2036842A1
FR2036842A1 FR6910914A FR6910914A FR2036842A1 FR 2036842 A1 FR2036842 A1 FR 2036842A1 FR 6910914 A FR6910914 A FR 6910914A FR 6910914 A FR6910914 A FR 6910914A FR 2036842 A1 FR2036842 A1 FR 2036842A1
Authority
FR
France
Prior art keywords
prodn
oxide
low
sodium
aluminium oxide
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.)
Withdrawn
Application number
FR6910914A
Other languages
French (fr)
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 Gebrueder 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 Gebrueder GmbH filed Critical Giulini Gebrueder GmbH
Priority to FR6910914A priority Critical patent/FR2036842A1/en
Publication of FR2036842A1 publication Critical patent/FR2036842A1/en
Withdrawn legal-status Critical Current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
    • C01F7/46—Purification of aluminium oxide, aluminium hydroxide or aluminates
    • 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
    • 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

Abstract

Aluminium oxide, low in sodium oxide, prodn. Process comprises calcination of Al(OH)3 with the addn. of boric acid just prior to total conversion into alpha-Al2O3, specif. the Al(OH)3 and the boric acid are introduced into a tubular, rotary oven, then 0.5-2.0% of NH4Cl is added.
FR6910914A 1969-04-09 1969-04-09 Aluminium oxide low in sodium oxide, prodn Withdrawn FR2036842A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR6910914A FR2036842A1 (en) 1969-04-09 1969-04-09 Aluminium oxide low in sodium oxide, prodn

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR6910914A FR2036842A1 (en) 1969-04-09 1969-04-09 Aluminium oxide low in sodium oxide, prodn

Publications (1)

Publication Number Publication Date
FR2036842A1 true FR2036842A1 (en) 1970-12-31

Family

ID=9032118

Family Applications (1)

Application Number Title Priority Date Filing Date
FR6910914A Withdrawn FR2036842A1 (en) 1969-04-09 1969-04-09 Aluminium oxide low in sodium oxide, prodn

Country Status (1)

Country Link
FR (1) FR2036842A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2441584A1 (en) * 1978-11-18 1980-06-13 Giulini Chemie PLATELET ALUMINUM OXIDE MACROCRYSTALS AND PROCESS FOR OBTAINING
EP0105025A1 (en) * 1982-08-24 1984-04-04 Schweizerische Aluminium Ag Process for the preparation of crystalline aluminium oxide

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2441584A1 (en) * 1978-11-18 1980-06-13 Giulini Chemie PLATELET ALUMINUM OXIDE MACROCRYSTALS AND PROCESS FOR OBTAINING
EP0105025A1 (en) * 1982-08-24 1984-04-04 Schweizerische Aluminium Ag Process for the preparation of crystalline aluminium oxide

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Legal Events

Date Code Title Description
ST Notification of lapse