ZA72647B - Defluorination of wet process phosphoric acid - Google Patents

Defluorination of wet process phosphoric acid

Info

Publication number
ZA72647B
ZA72647B ZA720647A ZA72647A ZA72647B ZA 72647 B ZA72647 B ZA 72647B ZA 720647 A ZA720647 A ZA 720647A ZA 72647 A ZA72647 A ZA 72647A ZA 72647 B ZA72647 B ZA 72647B
Authority
ZA
South Africa
Prior art keywords
defluorination
phosphoric acid
wet process
process phosphoric
wet
Prior art date
Application number
ZA720647A
Other languages
English (en)
Inventor
A Amin
R Bristow
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
Publication of ZA72647B publication Critical patent/ZA72647B/xx

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)
ZA720647A 1971-03-15 1972-02-01 Defluorination of wet process phosphoric acid ZA72647B (en)

Applications Claiming Priority (1)

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

Publications (1)

Publication Number Publication Date
ZA72647B true ZA72647B (en) 1972-10-25

Family

ID=22412766

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA720647A ZA72647B (en) 1971-03-15 1972-02-01 Defluorination of wet process phosphoric acid

Country Status (9)

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

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
DE2212576A1 (de) 1972-09-21
AU3865272A (en) 1973-08-09
AU462975B2 (en) 1975-06-26
ES400819A1 (es) 1975-02-01
GB1383832A (en) 1974-02-12
BR7105809D0 (pt) 1973-04-05
US3718729A (en) 1973-02-27
FR2130302B1 (de) 1977-07-15
FR2130302A1 (de) 1972-11-03
IT954349B (it) 1973-08-30

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