GB782423A - Production of aluminium fluoride - Google Patents

Production of aluminium fluoride

Info

Publication number
GB782423A
GB782423A GB2647254A GB2647254A GB782423A GB 782423 A GB782423 A GB 782423A GB 2647254 A GB2647254 A GB 2647254A GB 2647254 A GB2647254 A GB 2647254A GB 782423 A GB782423 A GB 782423A
Authority
GB
United Kingdom
Prior art keywords
temperatures
per cent
reaction
aluminium hydroxide
preferred
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
GB2647254A
Inventor
Ronald Frederick Knight
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.)
Fisons Ltd
Original Assignee
Fisons 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 Fisons Ltd filed Critical Fisons Ltd
Priority to GB2647254A priority Critical patent/GB782423A/en
Publication of GB782423A publication Critical patent/GB782423A/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
    • C01F7/48—Halides, with or without other cations besides aluminium
    • C01F7/50—Fluorides

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Inorganic Chemistry (AREA)
  • Silicon Compounds (AREA)

Abstract

Aluminium fluoride is produced by reacting at elevated temperature an aqueous aluminium hydroxide slurry and a 5-15 per cent by weight solution of fluosilicic acid. Preferably the silicic acid is present as an 8-12 per cent by weight solution in the initial reaction mixture. Preferred temperatures are 80-100 DEG C., and at these temperatures stoichiometrical quantities of the reactants should preferably be used: at lower temperatures, e.g. 60-75 DEG C., excess aluminium hydroxide is preferred. After reaction the mixture is filtered to remove silica, preferably at or near the reaction temperature. In order to crystallize b -AIF3.3H2O from the filtrate, the pH may be adjusted to 2.0-3.0 and the solution stirred vigorously at 80-100 DEG C. under reflux for a long period, e.g. 20 hours. The molten liquor may be used to wash the silica precipitate. a -AlF3.3H2O and AlF3.9H2O may be obtained by low-temperature crystallization but are metastable at 0-100 DEG C.
GB2647254A 1954-09-13 1954-09-13 Production of aluminium fluoride Expired GB782423A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2647254A GB782423A (en) 1954-09-13 1954-09-13 Production of aluminium fluoride

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2647254A GB782423A (en) 1954-09-13 1954-09-13 Production of aluminium fluoride

Publications (1)

Publication Number Publication Date
GB782423A true GB782423A (en) 1957-09-04

Family

ID=10244173

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2647254A Expired GB782423A (en) 1954-09-13 1954-09-13 Production of aluminium fluoride

Country Status (1)

Country Link
GB (1) GB782423A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3057681A (en) * 1960-01-13 1962-10-09 Kaiser Aluminium Chem Corp Producing aluminum fluoride
US3501268A (en) * 1967-05-18 1970-03-17 Ethyl Corp Process for the production of anhydrous hydrogen fluoride
US3647366A (en) * 1968-05-20 1972-03-07 Ver Kunstmestf Mekog Albatros Process for the preparation of anhydrous aluminum fluoride
DE2410410A1 (en) * 1974-03-05 1975-09-11 Kali Chemie Ag PROCESS FOR MANUFACTURING AN ALUMINUM FLUORIDE SOLUTION EXTENDINGLY FREE OF SILICA
US5707406A (en) * 1993-05-06 1998-01-13 Onoda Chemical Industry Co., Ltd. Method of manufacturing aluminum fluoride anhydride
CN110316749A (en) * 2019-07-10 2019-10-11 昆明川金诺化工股份有限公司 A kind of method of fluosilicic acid direct method production aluminum fluoride

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3057681A (en) * 1960-01-13 1962-10-09 Kaiser Aluminium Chem Corp Producing aluminum fluoride
US3501268A (en) * 1967-05-18 1970-03-17 Ethyl Corp Process for the production of anhydrous hydrogen fluoride
US3647366A (en) * 1968-05-20 1972-03-07 Ver Kunstmestf Mekog Albatros Process for the preparation of anhydrous aluminum fluoride
DE2410410A1 (en) * 1974-03-05 1975-09-11 Kali Chemie Ag PROCESS FOR MANUFACTURING AN ALUMINUM FLUORIDE SOLUTION EXTENDINGLY FREE OF SILICA
US5707406A (en) * 1993-05-06 1998-01-13 Onoda Chemical Industry Co., Ltd. Method of manufacturing aluminum fluoride anhydride
CN110316749A (en) * 2019-07-10 2019-10-11 昆明川金诺化工股份有限公司 A kind of method of fluosilicic acid direct method production aluminum fluoride

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