GB1127247A - Defluoridating phosphoric acid - Google Patents

Defluoridating phosphoric acid

Info

Publication number
GB1127247A
GB1127247A GB4978465A GB4978465A GB1127247A GB 1127247 A GB1127247 A GB 1127247A GB 4978465 A GB4978465 A GB 4978465A GB 4978465 A GB4978465 A GB 4978465A GB 1127247 A GB1127247 A GB 1127247A
Authority
GB
United Kingdom
Prior art keywords
phosphoric acid
acid
defluoridating
heating
silicate
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
GB4978465A
Other languages
English (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.)
EERSTE NL COOEPERATIEVE KUNSTM
Original Assignee
EERSTE NL COOEPERATIEVE KUNSTM
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 EERSTE NL COOEPERATIEVE KUNSTM filed Critical EERSTE NL COOEPERATIEVE KUNSTM
Publication of GB1127247A publication Critical patent/GB1127247A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B25/00—Phosphorus; Compounds thereof
    • C01B25/16—Oxyacids of phosphorus; Salts thereof
    • C01B25/18—Phosphoric acid
    • C01B25/234—Purification; Stabilisation; Concentration
    • C01B25/237—Selective elimination of impurities
    • C01B25/2372—Anionic impurities, e.g. silica or boron compounds
    • C01B25/2375—Fluoride or fluosilicate anion
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B33/00—Silicon; Compounds thereof
    • C01B33/08—Compounds containing halogen

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)
  • Catalysts (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Silicates, Zeolites, And Molecular Sieves (AREA)
  • Removal Of Specific Substances (AREA)
GB4978465A 1964-11-30 1965-11-23 Defluoridating phosphoric acid Expired GB1127247A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL6413920A NL151045B (nl) 1964-11-30 1964-11-30 Werkwijze voor het verwijderen van fluor uit fosforzuur.

Publications (1)

Publication Number Publication Date
GB1127247A true GB1127247A (en) 1968-09-18

Family

ID=19791540

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4978465A Expired GB1127247A (en) 1964-11-30 1965-11-23 Defluoridating phosphoric acid

Country Status (9)

Country Link
JP (1) JPS4811475B1 (nl)
BE (1) BE672707A (nl)
DE (1) DE1287053C2 (nl)
DK (1) DK109385C (nl)
FI (1) FI45315C (nl)
FR (1) FR1456263A (nl)
GB (1) GB1127247A (nl)
NL (1) NL151045B (nl)
SE (1) SE319757C (nl)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4311681A (en) 1980-05-19 1982-01-19 Fmc Corporation Method of regenerating phosphoric acid extraction solvent

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3718729A (en) * 1971-03-15 1973-02-27 American Cyanamid Co Defluorination of wet process phosphoric acid
DE2719701C3 (de) * 1976-05-06 1986-10-02 W.R. Grace & Co., New York, N.Y. Verfahren zur Überführung von Naßphosphorsäure in eine nicht zu Ausfällungen neigende konzentrierte Phosphorsäure
AU499517B2 (en) * 1978-03-06 1979-04-26 W. R. Grace & Co Treating wet-process phosphoric acid
DE3913853A1 (de) * 1989-04-27 1990-10-31 Hoechst Ag Verfahren zur aufarbeitung von phosphorsaeure

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2123785A (en) * 1936-03-02 1938-07-12 Victor Chemical Works Removal of fluorine from phosphoric acid

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4311681A (en) 1980-05-19 1982-01-19 Fmc Corporation Method of regenerating phosphoric acid extraction solvent

Also Published As

Publication number Publication date
NL6413920A (nl) 1966-05-31
FI45315B (nl) 1972-01-31
SE319757C (nl) 1975-06-30
JPS4811475B1 (nl) 1973-04-13
FI45315C (fi) 1972-05-10
DE1287053B (de) 1969-01-16
NL151045B (nl) 1976-10-15
SE319757B (nl) 1970-01-26
BE672707A (nl) 1966-03-16
DE1287053C2 (de) 1973-12-20
FR1456263A (fr) 1966-10-21
DK109385C (da) 1968-04-22

Similar Documents

Publication Publication Date Title
CS179372B2 (en) Process of lowering of overall sulphur content in the waste gases venting from the clause unit.
GB1127247A (en) Defluoridating phosphoric acid
BR6566994D0 (pt) Processo para separar o ferro contido em acido fosforico
IL23004A (en) Process for the purification of residual gypsum produced in the manufacture of phosphoric acid by the reaction of sulphuric acid with natural phosphates
GB1083144A (en) Filtering apparatus
ES313068A1 (es) Un metodo para producir una superficie aspera resistente a la corrosion sobre un material de hierro para armadura de hormigon.
GB1078398A (en) Improvements in or relating to closures for gas storage cylinders
AU1816970A (en) Improvements in or relating to fastening means for use more particularly with safety harness
JPS523249A (en) Desiliciczation
GB1050405A (nl)
GB596576A (en) Purifying anhydrous zirconium chloride
AU287034B2 (en) Entitled IMPROVEMENTS IN OR RELATING TO SILICIC ACID SOLS
GB1175085A (en) Improved Method of Producing Aluminium Fluoride
AU4772564A (en) Entitled IMPROVEMENTS IN OR RELATING TO SILICIC ACID SOLS
GB1261700A (en) Decomposition of ilmenite
CH557428A (de) Mehrzellenofen zur herstellung von aluminium durch elektrolyse.
GB1208092A (en) Improvements in or relating to bricks
GB349033A (en) Process of eliminating iron from inorganic materials
GB899953A (en) Process for manufacture of benzaldehyde or substituted benzaldehyde from the corresponding benzal chloride
ES363334A1 (es) Procedimiento para la produccion de una solucion de nitratode aluminio con reducido contenido en hierro.
GB1125390A (en) Treatment of polyamides
AU266540B2 (en) Improvements in or relating to safety harnesses
GB550083A (en) Improvements relating to the removal of silica from water
AU285092B2 (en) Improvements in or relating to vehicle hoists
AU237642B2 (en) IMPROVEMENTS To OR RELATING TO LOCK CYLINDERS