GB632079A - Improvement in the extraction of alumina from raw calcium aluminates - Google Patents

Improvement in the extraction of alumina from raw calcium aluminates

Info

Publication number
GB632079A
GB632079A GB26053/46A GB2605346A GB632079A GB 632079 A GB632079 A GB 632079A GB 26053/46 A GB26053/46 A GB 26053/46A GB 2605346 A GB2605346 A GB 2605346A GB 632079 A GB632079 A GB 632079A
Authority
GB
United Kingdom
Prior art keywords
solution
alumina
molecules
calcium aluminates
aluminates
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
GB26053/46A
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.)
Ciments Francais SAS
Original Assignee
Societe des Ciments Francais SA
Ciments Francais SAS
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 Societe des Ciments Francais SA, Ciments Francais SAS filed Critical Societe des Ciments Francais SA
Publication of GB632079A publication Critical patent/GB632079A/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
    • C01F7/16—Preparation of alkaline-earth metal aluminates or magnesium aluminates; Aluminium oxide or hydroxide therefrom
    • C01F7/18—Aluminium oxide or hydroxide from alkaline earth metal aluminates

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)

Abstract

In extracting alumina from raw anhydrous calcium aluminates by leaching either with water to obtain a solution of calcium aluminates or with diluted alkali lyes to obtain a solution of calcium and alkali aluminates, carbon dioxide is introduced during the leaching process so as to control the "Caustic Ratio" (C.R.) of the resulting solution to a figure of not less than 1, the C.R. being defined as the ratio of the molecules of caustic lime plus the molecules of caustic alkali present in solution to the molecules of alumina present in solution. The carbon dioxide may be used in the gaseous form and/or as an over-carbonated solution.
GB26053/46A 1942-05-06 1946-08-29 Improvement in the extraction of alumina from raw calcium aluminates Expired GB632079A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR632079X 1942-05-06

Publications (1)

Publication Number Publication Date
GB632079A true GB632079A (en) 1949-11-16

Family

ID=8992276

Family Applications (1)

Application Number Title Priority Date Filing Date
GB26053/46A Expired GB632079A (en) 1942-05-06 1946-08-29 Improvement in the extraction of alumina from raw calcium aluminates

Country Status (1)

Country Link
GB (1) GB632079A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2859100A (en) * 1953-07-09 1958-11-04 Seailles Jean Charles Process of extracting alumina from raw calcium aluminates

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2859100A (en) * 1953-07-09 1958-11-04 Seailles Jean Charles Process of extracting alumina from raw calcium aluminates

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