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
Authority: IT; Italy
Prior art keywords: defluoration; procedure; phosphoric acid; wet process; acid obtained
Prior art date: 1971-03-15

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.)

1971-03-15

Filing date

1972-03-07

Publication date

1973-08-30

1972-03-07 Application filed by American Cyanamid Co filed Critical American Cyanamid Co

1973-08-30 Application granted granted Critical

1973-08-30 Publication of IT954349B publication Critical patent/IT954349B/it

Links

NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 title 2
229910000147 aluminium phosphate Inorganic materials 0.000 title 1

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.

1971
- 1971-03-15 US US00124099A patent/US3718729A/en not_active Expired - Lifetime
- 1971-09-02 BR BR5809/71A patent/BR7105809D0/pt unknown
1972
- 1972-02-01 ZA ZA720647A patent/ZA72647B/xx unknown
- 1972-02-04 AU AU38652/72A patent/AU462975B2/en not_active Expired
- 1972-02-09 GB GB599772A patent/GB1383832A/en not_active Expired
- 1972-03-07 IT IT48817/72A patent/IT954349B/it active
- 1972-03-15 FR FR7209088A patent/FR2130302B1/fr not_active Expired
- 1972-03-15 DE DE19722212576 patent/DE2212576A1/de active Pending
- 1972-03-15 ES ES400819A patent/ES400819A1/es not_active Expired

Also Published As

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

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