GB939216A - Process for the production of alumina - Google Patents

Process for the production of alumina

Info

Publication number
GB939216A
GB939216A GB978560A GB978560A GB939216A GB 939216 A GB939216 A GB 939216A GB 978560 A GB978560 A GB 978560A GB 978560 A GB978560 A GB 978560A GB 939216 A GB939216 A GB 939216A
Authority
GB
United Kingdom
Prior art keywords
ammonium
solution
sulphate
aluminium
precipitate
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
GB978560A
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.)
FERNANDO ROULEAU GODDIN
Original Assignee
FERNANDO ROULEAU GODDIN
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 FERNANDO ROULEAU GODDIN filed Critical FERNANDO ROULEAU GODDIN
Priority to GB978560A priority Critical patent/GB939216A/en
Publication of GB939216A publication Critical patent/GB939216A/en
Expired legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01FCOMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
    • C01F7/00Compounds of aluminium
    • C01F7/02Aluminium oxide; Aluminium hydroxide; Aluminates
    • C01F7/20Preparation of aluminium oxide or hydroxide from aluminous ores with acids or salts
    • C01F7/26Preparation of aluminium oxide or hydroxide from aluminous ores with acids or salts with sulfuric acids or sulfates

Abstract

In the production of alumina a silico-aluminous ore is roasted with ammonium sulphate, the roasted ore is lixiviated, the resulting solution is decanted and filtered, aluminium ammonium sulphate obtained from the solution is purified by removing iron and titanium salts and silica, and alumina is precipitated from a solution of the purified aluminium ammonium sulphate by means of ammonium hydroxide or sulphide. The solution resulting from lixiviation is cooled with agitation, after the addition of further ammonium sulphate if required, to crystallize out the aluminium ammonium sulphate leaving most of the iron and titanium impurities in solution. The crystals are redissolved in water and ammonium ferrocyanide and copper sulphate added to precipitate iron, which is filtered off, and the filtrate cooled to crystallize the aluminium ammonium sulphate. The crystals are melted in their water of crystallization, zinc sulphate is added to precipitate any remaining silica, the melt is separated from insoluble residue and reacted with ammonium hydroxide solution or ammonium sulphide, causing aluminium hydroxide to precipitate, and finally the precipitate is calcined. An example is given. Specification 737,904 is referred to.
GB978560A 1960-03-18 1960-03-18 Process for the production of alumina Expired GB939216A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB978560A GB939216A (en) 1960-03-18 1960-03-18 Process for the production of alumina

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB978560A GB939216A (en) 1960-03-18 1960-03-18 Process for the production of alumina

Publications (1)

Publication Number Publication Date
GB939216A true GB939216A (en) 1963-10-09

Family

ID=9878720

Family Applications (1)

Application Number Title Priority Date Filing Date
GB978560A Expired GB939216A (en) 1960-03-18 1960-03-18 Process for the production of alumina

Country Status (1)

Country Link
GB (1) GB939216A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100413981C (en) * 2006-09-14 2008-08-27 北京矿冶研究总院 Method of acid extracting aluminium from high-silicon alumina-containing raw mineral materials

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100413981C (en) * 2006-09-14 2008-08-27 北京矿冶研究总院 Method of acid extracting aluminium from high-silicon alumina-containing raw mineral materials

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