GB884806A - Improved method of producing alumina - Google Patents

Improved method of producing alumina

Info

Publication number
GB884806A
GB884806A GB15119/59A GB1511959A GB884806A GB 884806 A GB884806 A GB 884806A GB 15119/59 A GB15119/59 A GB 15119/59A GB 1511959 A GB1511959 A GB 1511959A GB 884806 A GB884806 A GB 884806A
Authority
GB
United Kingdom
Prior art keywords
improved method
producing alumina
fluoride
weight
amount
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
GB15119/59A
Inventor
Robert Ross Barrington
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.)
General Motors Ltd
Original Assignee
General Motors Ltd
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 General Motors Ltd filed Critical General Motors Ltd
Priority to GB15119/59A priority Critical patent/GB884806A/en
Publication of GB884806A publication Critical patent/GB884806A/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
    • C01F7/44—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

Abstract

Alumina is produced by calcining aluminium hydroxide, preferably produced by the Boyer process, in the presence of a boron compound and hydrofluoric acid. The process may be carried out as described in the parent Specification using 1% to 5% by weight of boric acid, and, instead of up to 5% by weight, e.g. 1%, of aluminium fluoride, an amount of hydrofluoric acid such that the amount of fluoride ion is the same as in the aluminium fluoride.
GB15119/59A 1959-05-04 1959-05-04 Improved method of producing alumina Expired GB884806A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB15119/59A GB884806A (en) 1959-05-04 1959-05-04 Improved method of producing alumina

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB15119/59A GB884806A (en) 1959-05-04 1959-05-04 Improved method of producing alumina

Publications (1)

Publication Number Publication Date
GB884806A true GB884806A (en) 1961-12-20

Family

ID=10053372

Family Applications (1)

Application Number Title Priority Date Filing Date
GB15119/59A Expired GB884806A (en) 1959-05-04 1959-05-04 Improved method of producing alumina

Country Status (1)

Country Link
GB (1) GB884806A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3384454A (en) * 1964-03-04 1968-05-21 Gen Motors Corp Method of calcining aluminum hydroxide by cross-flowing the heating gas
DE3212297A1 (en) * 1982-03-29 1983-09-29 Schweizerische Aluminium AG, 3965 Chippis METHOD FOR PRODUCING COARSE CRYSTAL ALUMINUM

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3384454A (en) * 1964-03-04 1968-05-21 Gen Motors Corp Method of calcining aluminum hydroxide by cross-flowing the heating gas
DE3212297A1 (en) * 1982-03-29 1983-09-29 Schweizerische Aluminium AG, 3965 Chippis METHOD FOR PRODUCING COARSE CRYSTAL ALUMINUM

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