ES8104144A1 - Process for Producing Aluminium Fluoride - Google Patents

Process for Producing Aluminium Fluoride

Info

Publication number
ES8104144A1
ES8104144A1 ES491070A ES491070A ES8104144A1 ES 8104144 A1 ES8104144 A1 ES 8104144A1 ES 491070 A ES491070 A ES 491070A ES 491070 A ES491070 A ES 491070A ES 8104144 A1 ES8104144 A1 ES 8104144A1
Authority
ES
Spain
Prior art keywords
reaction
silica
filtering
production
aluminium hydroxide
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
ES491070A
Other languages
Spanish (es)
Other versions
ES491070A0 (en
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.)
Alcan Holdings Switzerland AG
Original Assignee
Alusuisse Holdings AG
Schweizerische Aluminium 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 Alusuisse Holdings AG, Schweizerische Aluminium AG filed Critical Alusuisse Holdings AG
Publication of ES491070A0 publication Critical patent/ES491070A0/en
Publication of ES8104144A1 publication Critical patent/ES8104144A1/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
    • G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
    • G01N27/021—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance before and after chemical transformation of the material
    • 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)
  • Life Sciences & Earth Sciences (AREA)
  • Organic Chemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Immunology (AREA)
  • Physics & Mathematics (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • Electrochemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Pathology (AREA)
  • Geology (AREA)
  • Inorganic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
  • Silicon Compounds (AREA)

Abstract

The invention concerns processes for the production of high purity aluminium fluoride tri-hydrate by the reaction of fluosilicic acid with aluminium hydroxide, filtering off SiO2 and precipitating ACF3 3H2O in the metastable filtrate, wherein the course of the reaction is checked or controlled by means of measurements of specific electrical conductivity. Usefully, no excess fluosilicic acid or aluminium hydroxide need be used in the process. Furthermore, fluctuations in the reaction parameters, viz: the quantities, concentrations, and temperatures, can be kept under control by means of a variable reaction time and can be compensated for. This leads to a constant, optimal yield and to reproducible constant conditions for filtering off the silica. The problems which arise in production as a result of the silica being difficult to filter off, due to not properly maintaining the operational parameters, can therefore be avoided by means of the said process.
ES491070A 1979-05-09 1980-04-30 Process for Producing Aluminium Fluoride Expired ES8104144A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH433779 1979-05-09

Publications (2)

Publication Number Publication Date
ES491070A0 ES491070A0 (en) 1981-04-01
ES8104144A1 true ES8104144A1 (en) 1981-04-01

Family

ID=4274209

Family Applications (1)

Application Number Title Priority Date Filing Date
ES491070A Expired ES8104144A1 (en) 1979-05-09 1980-04-30 Process for Producing Aluminium Fluoride

Country Status (10)

Country Link
JP (1) JPS55158120A (en)
AU (1) AU5799680A (en)
BR (1) BR8002770A (en)
DE (1) DE2926099B1 (en)
ES (1) ES8104144A1 (en)
FR (1) FR2456072A1 (en)
GB (1) GB2049647A (en)
NL (1) NL8002628A (en)
SE (1) SE8003462L (en)
ZA (1) ZA802536B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0293663A3 (en) * 1987-06-05 1991-03-06 Siemens Aktiengesellschaft Apparatus and method for determining hydrofluoric acid in aqueous solutions

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1083681A (en) * 1952-07-21 1955-01-11 Davison Chemical Corp Aluminum fluoride manufacturing process
US2842426A (en) * 1957-02-15 1958-07-08 Grace W R & Co Aluminum fluoride manufacture
US3057681A (en) * 1960-01-13 1962-10-09 Kaiser Aluminium Chem Corp Producing aluminum fluoride
DE2035109C3 (en) * 1970-07-15 1975-07-31 Gni Pi Lakokrasochnoj Promy Device for the detection of the completion of a transesterification reaction in the course of the production of synthetic resins
DE2410410C2 (en) * 1974-03-05 1982-07-29 Kali-Chemie Ag, 3000 Hannover Process for the production of largely silica-free aluminum fluoride solutions

Also Published As

Publication number Publication date
ZA802536B (en) 1981-05-27
FR2456072A1 (en) 1980-12-05
GB2049647A (en) 1980-12-31
JPS55158120A (en) 1980-12-09
BR8002770A (en) 1980-12-16
SE8003462L (en) 1980-11-10
NL8002628A (en) 1980-11-11
AU5799680A (en) 1980-11-13
ES491070A0 (en) 1981-04-01
DE2926099B1 (en) 1980-08-28

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