ATE9457T1 - Verfahren und extraktionsmittel zum entfernen von fluorverbindungen aus waessriger phosphorsaeure. - Google Patents

Verfahren und extraktionsmittel zum entfernen von fluorverbindungen aus waessriger phosphorsaeure.

Info

Publication number: ATE9457T1
Authority: AT; Austria
Prior art keywords: phosphoric acid; fluorine compounds; aqueous phosphoric; extraction agent; removing fluorine
Prior art date: 1981-06-15

Application number

AT82302909T

Other languages

English (en)

Inventor

Avraham M. Baniel

Aharon M. Eyal

Original Assignee

Yissum Research And Development Company Of The Hebrew University Of Jerusalem

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.)

1981-06-15

Filing date

1982-06-04

Publication date

1984-10-15

Family has litigation

First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=11052699&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=ATE9457(T1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.

1982-06-04 Application filed by Yissum Research And Development Company Of The Hebrew University Of Jerusalem filed Critical Yissum Research And Development Company Of The Hebrew University Of Jerusalem

1984-10-15 Application granted granted Critical

1984-10-15 Publication of ATE9457T1 publication Critical patent/ATE9457T1/de

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

Landscapes

Chemical & Material Sciences (AREA)
Organic Chemistry (AREA)
Inorganic Chemistry (AREA)
Extraction Or Liquid Replacement (AREA)
Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Removal Of Specific Substances (AREA)

AT82302909T 1981-06-15 1982-06-04 Verfahren und extraktionsmittel zum entfernen von fluorverbindungen aus waessriger phosphorsaeure. ATE9457T1 (de)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
IL63097A IL63097A0 (en)	1981-06-15	1981-06-15	A process and extractant for removing fluorine compounds from aqueous phosphoric acid
EP82302909A EP0068663B1 (de)	1981-06-15	1982-06-04	Verfahren und Extraktionsmittel zum Entfernen von Fluorverbindungen aus wässriger Phosphorsäure

Publications (1)

Publication Number	Publication Date
ATE9457T1 true ATE9457T1 (de)	1984-10-15

Family

ID=11052699

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
AT82302909T ATE9457T1 (de)	1981-06-15	1982-06-04	Verfahren und extraktionsmittel zum entfernen von fluorverbindungen aus waessriger phosphorsaeure.

Country Status (5)

Country	Link
US (1)	US4439408A (de)
EP (1)	EP0068663B1 (de)
AT (1)	ATE9457T1 (de)
DE (1)	DE3260776D1 (de)
IL (1)	IL63097A0 (de)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
CN1041812C (zh) *	1996-08-23	1999-01-27	四川绵竹龙蟒矿物质饲料集团有限公司	一种生产饲料级磷酸氢钙工艺中的除氟方法
WO2009125400A2 (en) *	2008-04-08	2009-10-15	Hcl Cleantech Ltd.	A process for the recovery of hcl from a dilute solution thereof and extractant composition for use therein
IL207329A0 (en)	2010-08-01	2010-12-30	Robert Jansen	A method for refining a recycle extractant and for processing a lignocellulosic material and for the production of a carbohydrate composition
IL207945A0 (en)	2010-09-02	2010-12-30	Robert Jansen	Method for the production of carbohydrates
CN116374971A (zh) *	2023-03-07	2023-07-04	湖北鄂中生态农业科技有限公司	磷酸的提纯方法

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US3367749A (en) *	1963-02-20	1968-02-06	Monsanto Co	Purifying phosphoric acid using an amine extractant
US4024225A (en) *	1973-11-02	1977-05-17	United States Steel Corporation	Method of making high purity alkali metal phosphates from wet-process phosphoric acid
US3972982A (en) *	1975-03-03	1976-08-03	Monsanto Company	Process for removing fluorine compounds from phosphoric acid
US4053564A (en) *	1976-05-20	1977-10-11	Occidental Petroleum Company	Extraction process for purification of phosphoric acid
SU691146A1 (ru) *	1976-12-15	1979-10-15	Предприятие П/Я В-2262	Состав дл очистки фосфорной кислоты
IL57024A (en) *	1979-04-09	1982-03-31	Yissum Appl Eng Syst	Process for the separation of a strong mineral acid from an aqueous solution

1981
- 1981-06-15 IL IL63097A patent/IL63097A0/xx not_active IP Right Cessation
1982
- 1982-06-01 US US06/384,008 patent/US4439408A/en not_active Expired - Fee Related
- 1982-06-04 EP EP82302909A patent/EP0068663B1/de not_active Expired
- 1982-06-04 AT AT82302909T patent/ATE9457T1/de active
- 1982-06-04 DE DE8282302909T patent/DE3260776D1/de not_active Expired

Also Published As

Publication number	Publication date
EP0068663B1 (de)	1984-09-19
US4439408A (en)	1984-03-27
EP0068663A1 (de)	1983-01-05
IL63097A0 (en)	1981-09-13
DE3260776D1 (en)	1984-10-25

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Legal Events

Date	Code	Title	Description
1985-03-15	UEP	Publication of translation of european patent specification
1986-11-15	RVE	Rejection due to an opposition filed with the epo