GB1051521A - Improvements in or relating to a process for the production of substantially iron free aqueous solution of phosphoric acid - Google Patents
Improvements in or relating to a process for the production of substantially iron free aqueous solution of phosphoric acidInfo
- Publication number
- GB1051521A GB1051521A GB332065A GB332065A GB1051521A GB 1051521 A GB1051521 A GB 1051521A GB 332065 A GB332065 A GB 332065A GB 332065 A GB332065 A GB 332065A GB 1051521 A GB1051521 A GB 1051521A
- Authority
- GB
- United Kingdom
- Prior art keywords
- iron
- liquor
- volume
- aqueous
- extract
- 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
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
- C01B25/238—Cationic impurities, e.g. arsenic compounds
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)
Abstract
1,051,521. Removing iron from aqueous phosphate-containing liquor. ISRAEL MINING INDUSTRIES-INSTITUTE FOR RESEARCH & DEVELOPMENT. Jan. 26, 1965 [Feb. 20, 1964], No. 3320/65. Heading C1A. A substantially iron-free aqueous acidic solution containing phosphate, chloride and sulphate anions, and cations present in phosphate rock, which may be further processed to produce phosphonic acid is produced from an aqueous liquor containing the above ions and also iron, by extracting the liquor with a solvent selected from the group consisting of aliphatic alcohols, ketones, and esters of limited mutual miscibility with water, the total volume of solvent used being less than the volume of said liquor, and separating the iron containing extract from the liquor. The volume of solvent is preferably 1 volume to 5-10 volumes of liquor. Solvents preferred are iso-amyl alcohol, aliphatic alcohols with more than 5 carbon atoms and esters containing from 5 to 18 carbon atoms, particularly amyl acetate, other solvents detailed are di-isobutyl ketone, hexanol, octanol and cyclohexanone. The solvents may be mixed with an organic liquid with dielectric constant from 27 to 45, e.g. nitrobenzene. The starting liquor preferably contains 40-80 grams per litre of hydrochloric acid. The organic extract may be stripped of any coextracted P 2 O 5 by contacting with an aqueous recycle containing ferric chloride and hydrochloric acid and the iron may then be removed from the organic extract by washing with water. Alternatively the organic extract may be treated to reduce any trivalent iron to bivalent iron and the bivalent iron may be removed from the extract by precipitation or by extraction with water.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IL2083464 | 1964-02-20 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1051521A true GB1051521A (en) | 1966-12-14 |
Family
ID=11043284
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB332065A Expired GB1051521A (en) | 1964-02-20 | 1965-01-27 | Improvements in or relating to a process for the production of substantially iron free aqueous solution of phosphoric acid |
Country Status (2)
Country | Link |
---|---|
GB (1) | GB1051521A (en) |
NL (1) | NL6501914A (en) |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3978196A (en) * | 1973-05-10 | 1976-08-31 | Toyo Soda Manufacturing Co., Ltd. | Phosphoric acid purification |
US7361323B2 (en) | 2002-06-28 | 2008-04-22 | Ecophos | Method for the production of phosphoric acid and/or a salt thereof and products thus obtained |
US7687046B2 (en) | 2002-06-28 | 2010-03-30 | Ecophos | Method of producing phosphoric acid salt |
EP2186774A1 (en) | 2008-10-16 | 2010-05-19 | Ecophos S.A. | Process for the production of high purity phosphoric acid |
US7824634B2 (en) | 2003-12-24 | 2010-11-02 | Ecophos | Method for etching phosphate ores |
WO2017151016A1 (en) | 2016-03-03 | 2017-09-08 | Mineral And Chemical Company Eurochem, Joint Stock Company | Solid phosphate salt and process for preparation thereof |
WO2018002071A1 (en) | 2016-06-28 | 2018-01-04 | Prayon Technologies | Method for producing calcium monohydrogen phosphate |
WO2018002051A1 (en) | 2016-06-28 | 2018-01-04 | Prayon Technologies | Method for producing calcium monohydrogen phosphate |
WO2021154164A1 (en) | 2020-01-31 | 2021-08-05 | Societe Poulina Group Holding | Method for manufacturing feed grade dicalcium phosphate by reacting a concentrated hydrochloric acid on a phosphate ore pulp |
-
1965
- 1965-01-27 GB GB332065A patent/GB1051521A/en not_active Expired
- 1965-02-16 NL NL6501914A patent/NL6501914A/xx unknown
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3978196A (en) * | 1973-05-10 | 1976-08-31 | Toyo Soda Manufacturing Co., Ltd. | Phosphoric acid purification |
US7361323B2 (en) | 2002-06-28 | 2008-04-22 | Ecophos | Method for the production of phosphoric acid and/or a salt thereof and products thus obtained |
US7687046B2 (en) | 2002-06-28 | 2010-03-30 | Ecophos | Method of producing phosphoric acid salt |
US7824634B2 (en) | 2003-12-24 | 2010-11-02 | Ecophos | Method for etching phosphate ores |
EP2186774A1 (en) | 2008-10-16 | 2010-05-19 | Ecophos S.A. | Process for the production of high purity phosphoric acid |
WO2017151016A1 (en) | 2016-03-03 | 2017-09-08 | Mineral And Chemical Company Eurochem, Joint Stock Company | Solid phosphate salt and process for preparation thereof |
WO2018002071A1 (en) | 2016-06-28 | 2018-01-04 | Prayon Technologies | Method for producing calcium monohydrogen phosphate |
WO2018002051A1 (en) | 2016-06-28 | 2018-01-04 | Prayon Technologies | Method for producing calcium monohydrogen phosphate |
WO2021154164A1 (en) | 2020-01-31 | 2021-08-05 | Societe Poulina Group Holding | Method for manufacturing feed grade dicalcium phosphate by reacting a concentrated hydrochloric acid on a phosphate ore pulp |
Also Published As
Publication number | Publication date |
---|---|
NL6501914A (en) | 1965-08-23 |
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