GB363612A - Improvements in the production of alumina from alkaline earth aluminates - Google Patents

Improvements in the production of alumina from alkaline earth aluminates

Info

Publication number
GB363612A
GB363612A GB23200/31A GB2320031A GB363612A GB 363612 A GB363612 A GB 363612A GB 23200/31 A GB23200/31 A GB 23200/31A GB 2320031 A GB2320031 A GB 2320031A GB 363612 A GB363612 A GB 363612A
Authority
GB
United Kingdom
Prior art keywords
alumina
alkali
production
aluminate
alkaline earth
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
GB23200/31A
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.)
Lonza AG
Original Assignee
Lonza AG
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 Lonza AG filed Critical Lonza AG
Publication of GB363612A publication Critical patent/GB363612A/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
    • C01F7/04—Preparation of alkali metal aluminates; Aluminium oxide or hydroxide therefrom
    • C01F7/12—Alkali metal aluminates 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 the production of alumina from an alkaline-earth metal aluminate such as calcium aluminate, the latter is treated with sufficient acid only to combine with the alkaline-earth metal, and the liberated aluminium hydroxide is treated with alkali such as caustic soda or sodium carbonate to obtain a solution of alkali aluminate from which pure alumina may be precipitated by known means. When nitric acid is used for the first step, the calcium &c. sulphate formed remains with the impurity residue after the alkali treatment. A slight excess of alkali above that required to form the compound Me AlO2 is preferably used.
GB23200/31A 1930-08-21 1931-08-18 Improvements in the production of alumina from alkaline earth aluminates Expired GB363612A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH363612X 1930-08-21

Publications (1)

Publication Number Publication Date
GB363612A true GB363612A (en) 1931-12-24

Family

ID=4513277

Family Applications (1)

Application Number Title Priority Date Filing Date
GB23200/31A Expired GB363612A (en) 1930-08-21 1931-08-18 Improvements in the production of alumina from alkaline earth aluminates

Country Status (1)

Country Link
GB (1) GB363612A (en)

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