IE41148B1 - Improvement in the extraction of alumina from bauxite - Google Patents

Improvement in the extraction of alumina from bauxite

Info

Publication number
IE41148B1
IE41148B1 IE112175A IE112175A IE41148B1 IE 41148 B1 IE41148 B1 IE 41148B1 IE 112175 A IE112175 A IE 112175A IE 112175 A IE112175 A IE 112175A IE 41148 B1 IE41148 B1 IE 41148B1
Authority
IE
Ireland
Prior art keywords
alumina
extraction
bauxite
improvement
boehmite
Prior art date
Application number
IE112175A
Other versions
IE41148L (en
Original Assignee
Alcan Res & Dev
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 Alcan Res & Dev filed Critical Alcan Res & Dev
Publication of IE41148L publication Critical patent/IE41148L/en
Publication of IE41148B1 publication Critical patent/IE41148B1/en

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  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)

Abstract

In the production of alumina by the Bayer process from bauxite containing gibbsite and boehmite and having an iron content below 5% (calculated as Fe2O3) the extraction of boehmite is improved by introducing lime during, preferably at the beginning of, the digestion stage which is carried out at a temperature of 225-270.degree.C. [CA1047230A]
IE112175A 1974-05-23 1975-05-19 Improvement in the extraction of alumina from bauxite IE41148B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2319374 1974-05-23

Publications (2)

Publication Number Publication Date
IE41148L IE41148L (en) 1975-11-23
IE41148B1 true IE41148B1 (en) 1979-10-24

Family

ID=10191664

Family Applications (1)

Application Number Title Priority Date Filing Date
IE112175A IE41148B1 (en) 1974-05-23 1975-05-19 Improvement in the extraction of alumina from bauxite

Country Status (3)

Country Link
CA (1) CA1047230A (en)
ES (1) ES437862A1 (en)
IE (1) IE41148B1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4483830A (en) * 1981-09-10 1984-11-20 Comalco Limited Production of alumina
FR2728556B1 (en) * 1994-12-22 1997-01-31 Pechiney Aluminium PROCESS FOR THE REMOVAL OF IRON FROM SODIUM ALUMINATE LIQUORS DERIVED FROM ALKALINE BAUXITE ALOHYDRATE ATTACK

Also Published As

Publication number Publication date
CA1047230A (en) 1979-01-30
ES437862A1 (en) 1977-01-01
IE41148L (en) 1975-11-23

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