GB553034A - Process for the production of alumina and magnesia - Google Patents

Process for the production of alumina and magnesia

Info

Publication number
GB553034A
GB553034A GB1561441A GB1561441A GB553034A GB 553034 A GB553034 A GB 553034A GB 1561441 A GB1561441 A GB 1561441A GB 1561441 A GB1561441 A GB 1561441A GB 553034 A GB553034 A GB 553034A
Authority
GB
United Kingdom
Prior art keywords
sulphate
calcium
magnesium
aluminium
heated
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
GB1561441A
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.)
RALPH MACKENZIE
John G Stein and Co Ltd
Original Assignee
RALPH MACKENZIE
John G Stein and Co 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 RALPH MACKENZIE, John G Stein and Co Ltd filed Critical RALPH MACKENZIE
Priority to GB1561441A priority Critical patent/GB553034A/en
Publication of GB553034A publication Critical patent/GB553034A/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
    • C01F7/20—Preparation of aluminium oxide or hydroxide from aluminous ores using acids or salts
    • C01F7/26—Preparation of aluminium oxide or hydroxide from aluminous ores using acids or salts with sulfuric acids or sulfates

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Inorganic Chemistry (AREA)
  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)

Abstract

553,034. Aluminium and magnesium compounds. STEIN & CO., Ltd., J. G., HYSLOP, J. F., and MACKENZIE, R. Dec. 4, 1941, No. 15614. [Class I (iii)] Pure alumina and relatively pure magnesia are obtained from aluminium sulphate (which may be a product of the treatment of clay with sulphuric acid) and calcium-magnesium carbonate rock by a series of steps in which the finely ground rock is added to aluminium sulphate solution heated to over 50‹ C. to produce aluminium hydroxide, calcium sulphate, magnesium sulphate and carbon dioxide ; the magnesium sulphate solution is separated and concentrated, and the crystals heated to obtain magnesium oxide. The mixed precipitate of aluminium hydroxide and calcium sulphate is heated to above 1200‹ C. to give calcium aluminate and sulphur dioxide and the calcium aluminate is treated by known methods to give alumina, e.g. by reaction with sodium carbonate and precipitation from the sodium aluminate.
GB1561441A 1941-12-04 1941-12-04 Process for the production of alumina and magnesia Expired GB553034A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1561441A GB553034A (en) 1941-12-04 1941-12-04 Process for the production of alumina and magnesia

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1561441A GB553034A (en) 1941-12-04 1941-12-04 Process for the production of alumina and magnesia

Publications (1)

Publication Number Publication Date
GB553034A true GB553034A (en) 1943-05-05

Family

ID=10062305

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1561441A Expired GB553034A (en) 1941-12-04 1941-12-04 Process for the production of alumina and magnesia

Country Status (1)

Country Link
GB (1) GB553034A (en)

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