IT954349B - Procedimento per la defluorurazione di acido fosforico ottenuto con il processo umido - Google Patents

Procedimento per la defluorurazione di acido fosforico ottenuto con il processo umido

Info

Publication number
IT954349B
IT954349B IT48817/72A IT4881772A IT954349B IT 954349 B IT954349 B IT 954349B IT 48817/72 A IT48817/72 A IT 48817/72A IT 4881772 A IT4881772 A IT 4881772A IT 954349 B IT954349 B IT 954349B
Authority
IT
Italy
Prior art keywords
defluoration
procedure
phosphoric acid
wet process
acid obtained
Prior art date
Application number
IT48817/72A
Other languages
English (en)
Original Assignee
American Cyanamid Co
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 American Cyanamid Co filed Critical American Cyanamid Co
Application granted granted Critical
Publication of IT954349B publication Critical patent/IT954349B/it

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
    • 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)
  • Silicon Compounds (AREA)
  • Removal Of Specific Substances (AREA)
  • Processing Of Solid Wastes (AREA)
IT48817/72A 1971-03-15 1972-03-07 Procedimento per la defluorurazione di acido fosforico ottenuto con il processo umido IT954349B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US12409971A 1971-03-15 1971-03-15

Publications (1)

Publication Number Publication Date
IT954349B true IT954349B (it) 1973-08-30

Family

ID=22412766

Family Applications (1)

Application Number Title Priority Date Filing Date
IT48817/72A IT954349B (it) 1971-03-15 1972-03-07 Procedimento per la defluorurazione di acido fosforico ottenuto con il processo umido

Country Status (9)

Country Link
US (1) US3718729A (it)
AU (1) AU462975B2 (it)
BR (1) BR7105809D0 (it)
DE (1) DE2212576A1 (it)
ES (1) ES400819A1 (it)
FR (1) FR2130302B1 (it)
GB (1) GB1383832A (it)
IT (1) IT954349B (it)
ZA (1) ZA72647B (it)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS516894A (en) * 1974-07-09 1976-01-20 Toyo Soda Mfg Co Ltd Seiseirinsanno seizoho
US4083937A (en) * 1974-07-09 1978-04-11 Toyo Soda Manufacturing Co., Ltd. Process for preparing pure phosphoric acid
FR2302275A1 (fr) * 1975-02-25 1976-09-24 Prorea Procede de concentration et d'epuration simultanees de l'acide phosphorique
DE2938850B1 (de) * 1979-09-26 1980-06-26 Uhde Gmbh Verfahren zur Entfluorierung von Phosphorsaeure
US4377560A (en) * 1981-07-13 1983-03-22 Occidental Research Corporation Process for producing low aluminum content phosphoric acid from high aluminum matrix
US5002744A (en) * 1990-05-11 1991-03-26 Imc Fertilizer, Inc. Method for defluorinating wet process phosphoric acid
US5236679A (en) * 1992-05-06 1993-08-17 Freeport-Mcmoran Resource Partners Removal of aluminum contamination during production of phosphoric acid
CN110467166A (zh) * 2019-09-20 2019-11-19 瓮福达州化工有限责任公司 一种湿法磷酸脱氟方法
CN115285954B (zh) * 2022-08-12 2023-10-27 宜都兴发化工有限公司 一种提高湿法磷酸生产浓缩工段氟收率的方法

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2933372A (en) * 1956-11-02 1960-04-19 Int Minerals & Chem Corp Method of defluorinating phosphatic material
US2987376A (en) * 1956-12-27 1961-06-06 Int Minerals & Chem Corp Method for defluorination of phosphoric acid
US3151941A (en) * 1960-05-02 1964-10-06 Smith Douglass Company Inc Defluorination of peosphoric acid
US3193351A (en) * 1961-07-05 1965-07-06 Nat Distillers Chem Corp Removal of fluorine from wet process prosphoric acid
NL151045B (nl) * 1964-11-30 1976-10-15 Windmill Holland Bv Werkwijze voor het verwijderen van fluor uit fosforzuur.

Also Published As

Publication number Publication date
GB1383832A (en) 1974-02-12
FR2130302A1 (it) 1972-11-03
DE2212576A1 (de) 1972-09-21
AU462975B2 (en) 1975-06-26
AU3865272A (en) 1973-08-09
US3718729A (en) 1973-02-27
ES400819A1 (es) 1975-02-01
BR7105809D0 (pt) 1973-04-05
FR2130302B1 (it) 1977-07-15
ZA72647B (en) 1972-10-25

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