ES262391A1 - Process for producing a sodium fluoaluminate composition having predetermined naf/alf3 ratio - Google Patents

Process for producing a sodium fluoaluminate composition having predetermined naf/alf3 ratio

Info

Publication number
ES262391A1
ES262391A1 ES0262391A ES262391A ES262391A1 ES 262391 A1 ES262391 A1 ES 262391A1 ES 0262391 A ES0262391 A ES 0262391A ES 262391 A ES262391 A ES 262391A ES 262391 A1 ES262391 A1 ES 262391A1
Authority
ES
Spain
Prior art keywords
sodium
alf3
aluminium
naf
predetermined
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
ES0262391A
Other languages
Spanish (es)
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.)
IETR PER AZIONI I C P M IND CH
Original Assignee
IETR PER AZIONI I C P M IND CH
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 IETR PER AZIONI I C P M IND CH filed Critical IETR PER AZIONI I C P M IND CH
Publication of ES262391A1 publication Critical patent/ES262391A1/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
    • C01F7/54—Double compounds containing both aluminium and alkali metals or alkaline-earth metals
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25C—PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR
    • C25C3/00—Electrolytic production, recovery or refining of metals by electrolysis of melts
    • C25C3/06—Electrolytic production, recovery or refining of metals by electrolysis of melts of aluminium
    • C25C3/18—Electrolytes

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Inorganic Chemistry (AREA)
  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
  • Compositions Of Oxide Ceramics (AREA)

Abstract

Sodium fluoaluminates having a predetermined NaF/AlF3 molar ratio in the range of 1.67: 1 to 2.65: 1 are prepared by mixing in the absence of potassium ions an aqueous solution containing two of the ions sodium, aluminium and fluoride with an aqueous solution containing the remaining ion, to obtain an aqueous slurry, the reactants being employed in such proportion that the sodium gram ion: aluminium gram ion ratio is equivalent to the predetermined NaF/AlF3 molar ratio of the sodium fluoaluminate to be obtained and that the quantity of fluoride gram ions is at least stoichiometrically equal to the total sum of sodium and aluminium gram ions, and heating the slurry for a time sufficient to obtain a completely reacted sodium fluoaluminate. The first solution may be of fluoaluminic acid and the second of sodium chloride, or the first may be of aluminium and sodium chloride and the second of hydrofluoric acid. The product is a mixture of cryolite (Na3AlF6) and chiolite (Na5Al3F14). In Example 1, a solution of HF and AlF3 is mixed with a sodium chloride solution to give a slurry maintained at 50 DEG C. for one hour and a product comprising 79.3% cryolite and 20.7% chiolite. Examples 2 to 4 are similar, while in Example 5 the solutions are of HF and of a mixture of NaCl and AlCl3.6H2O, the product comprising 1.8% cryolite and 98.2% chiolite. Specification 904,333 is referred to.
ES0262391A 1959-10-30 1960-10-31 Process for producing a sodium fluoaluminate composition having predetermined naf/alf3 ratio Expired ES262391A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT1810359 1959-10-30

Publications (1)

Publication Number Publication Date
ES262391A1 true ES262391A1 (en) 1961-02-01

Family

ID=11151783

Family Applications (1)

Application Number Title Priority Date Filing Date
ES0262391A Expired ES262391A1 (en) 1959-10-30 1960-10-31 Process for producing a sodium fluoaluminate composition having predetermined naf/alf3 ratio

Country Status (3)

Country Link
US (1) US3128151A (en)
ES (1) ES262391A1 (en)
GB (1) GB969757A (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1250131B (en) * 1962-01-30 1967-09-14
US3457150A (en) * 1966-11-22 1969-07-22 Reynolds Metals Co Beneficiation of cryolite material
US3493330A (en) * 1966-11-22 1970-02-03 Reynolds Metals Co Beneficiation of cryolite material
US3486845A (en) * 1966-11-22 1969-12-30 Reynolds Metals Co Beneficiation of cryolite material
US3485579A (en) * 1966-11-22 1969-12-23 Reynolds Metals Co Beneficiation of cryolite material
US3493331A (en) * 1966-11-22 1970-02-03 Reynolds Metals Co Production of cryolite material
US3852173A (en) * 1973-06-28 1974-12-03 Aluminum Co Of America Alumina reduction process
US3839167A (en) * 1973-06-28 1974-10-01 Aluminum Co Of America Novel alumina feed for aluminum cell
DE2831095A1 (en) * 1978-07-14 1980-01-24 Lentia Gmbh METHOD FOR PRODUCING CRYSTALLINE CRYOLITE
DE19857788A1 (en) * 1998-12-15 2000-06-21 Merck Patent Gmbh Process for the production of molten salt with an extruder and their use
WO2013174065A1 (en) * 2012-05-23 2013-11-28 深圳市新星轻合金材料股份有限公司 Cryolite with low molecular ratio used in aluminum electrolysis industry and preparation method thereof

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1475158A (en) * 1922-10-16 1923-11-20 Grasselli Chemical Co Process of making artificial cryolite
US2058075A (en) * 1934-06-09 1936-10-20 Gaither Gant Process for making martificial cryolite
US2196077A (en) * 1937-06-25 1940-04-02 Aluminum Co Of America Method of producing sodium aluminum fluoride
US2182510A (en) * 1938-07-29 1939-12-05 Aluminum Co Of America Production of double fluorides of alkali metals and aluminum
US2915443A (en) * 1957-06-12 1959-12-01 Aluminum Lab Ltd Electrolyte for aluminum reduction
GB904333A (en) * 1959-01-08 1962-08-29 I C P M S P A Ind Chimiche Por Process for the preparation of artificial cryolite and apparatus for performing saidprocess
US2996335A (en) * 1960-12-19 1961-08-15 Gar Wood Ind Inc Wheel and tire trim construction

Also Published As

Publication number Publication date
US3128151A (en) 1964-04-07
GB969757A (en) 1964-09-16

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