ES414069A1 - Purification of phosphoric acid - Google Patents
Purification of phosphoric acidInfo
- Publication number
- ES414069A1 ES414069A1 ES414069A ES414069A ES414069A1 ES 414069 A1 ES414069 A1 ES 414069A1 ES 414069 A ES414069 A ES 414069A ES 414069 A ES414069 A ES 414069A ES 414069 A1 ES414069 A1 ES 414069A1
- Authority
- ES
- Spain
- Prior art keywords
- phosphoric acid
- ketone
- phase
- contact
- brought
- 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
- C01B25/46—Preparation involving solvent-solvent extraction
- C01B25/461—Preparation involving solvent-solvent extraction the phosphoric acid present in the medium obtained after reaction being first extracted from the liquid phase formed or separated then re-extracted as free acid by using water or as a phosphate by using a basic compound
- C01B25/463—Preparation involving solvent-solvent extraction the phosphoric acid present in the medium obtained after reaction being first extracted from the liquid phase formed or separated then re-extracted as free acid by using water or as a phosphate by using a basic compound the extracting agent being a ketone or a mixture of ketones
-
- 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
- C01B25/22—Preparation by reacting phosphate-containing material with an acid, e.g. wet process
-
- 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
- C01B25/2343—Concentration concomitant with purification, e.g. elimination of fluorine
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Analytical Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Extraction Or Liquid Replacement (AREA)
- Cleaning Or Drying Semiconductors (AREA)
- Encapsulation Of And Coatings For Semiconductor Or Solid State Devices (AREA)
- Crystals, And After-Treatments Of Crystals (AREA)
Abstract
The novel process is employed to produce purified phosphoric acid or purified phosphate from a phosphoric acid obtained according to the wet process. This involves bringing the acid into contact with a dialkyl ketone having 5 or 6 carbon atoms. Essentially, the weight ratio is from 0.5:1 to 2:1. The phosphoric acid is then extracted into the organic phase, so that a ketone phase is formed in which the H3PO4 concentration is from 28 to 40% by weight. The organic phase is then brought into contact with water or an aqueous solution of a base. An aqueous phase is thus obtained which contains phosphoric acid or a phosphate with a purity higher than that of the phosphoric acid employed obtained from the wet process. If a ketone having 5 carbon atoms is used, the ketone phase is brought into contact in counter-current with water in at least two stages.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1947672A GB1436113A (en) | 1972-04-26 | 1972-04-26 | Purification of phosphoric acid |
| GB4538072 | 1972-10-02 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ES414069A1 true ES414069A1 (en) | 1976-05-16 |
Family
ID=26254071
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES414069A Expired ES414069A1 (en) | 1972-04-26 | 1973-04-25 | Purification of phosphoric acid |
Country Status (20)
| Country | Link |
|---|---|
| JP (1) | JPS4999993A (en) |
| AU (1) | AU8599475A (en) |
| BE (1) | BE798737A (en) |
| CA (1) | CA1004828A (en) |
| CH (1) | CH613916A5 (en) |
| DD (1) | DD109362A5 (en) |
| DE (1) | DE2320877B2 (en) |
| ES (1) | ES414069A1 (en) |
| FI (1) | FI59077C (en) |
| FR (3) | FR2182055B1 (en) |
| GB (1) | GB1436113A (en) |
| IE (1) | IE37549B1 (en) |
| IN (1) | IN140334B (en) |
| MY (1) | MY7800085A (en) |
| NL (1) | NL7305765A (en) |
| NO (1) | NO137082C (en) |
| OA (1) | OA04403A (en) |
| RO (2) | RO69802A (en) |
| SE (1) | SE395263B (en) |
| TR (1) | TR18445A (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IL48207A (en) * | 1974-10-07 | 1978-12-17 | Pennzoil Co | Production of fluoride-free phosphates |
| CA1139956A (en) * | 1978-10-10 | 1983-01-25 | Mark A. Rose | Process for extracting uranium from crude phosphoric acids |
| DE3246416A1 (en) * | 1982-12-15 | 1984-06-20 | Hoechst Ag, 6230 Frankfurt | METHOD FOR PURIFYING WET METAL PHOSPHORIC ACID |
| DE3246415A1 (en) * | 1982-12-15 | 1984-06-20 | Hoechst Ag, 6230 Frankfurt | METHOD FOR PURIFYING WET METHOD PHOSPHORIC ACID |
| JP2512429Y2 (en) * | 1993-07-12 | 1996-10-02 | 北陸電気工業株式会社 | High voltage resistance pack |
| IT1285694B1 (en) * | 1996-05-08 | 1998-06-18 | Azionaria Costruzioni Acma Spa | METHOD AND UNIT FOR THE TRAINING AND CONVEYANCE OF GROUPS OF PRODUCTS |
| DE19703884C2 (en) | 1997-02-03 | 1999-04-29 | Bk Giulini Chem Gmbh & Co Ohg | Process for purifying wet process phosphoric acid |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL298968A (en) | 1963-10-08 | |||
| GB1142719A (en) * | 1968-10-24 | 1969-02-12 | Israel Mining Ind Inst For Res | Phosphoric acid recovery |
| DE2334019C3 (en) * | 1973-07-04 | 1982-11-04 | Hoechst Ag, 6000 Frankfurt | Process for the purification of contaminated aqueous phosphoric acid |
-
1972
- 1972-04-26 GB GB1947672A patent/GB1436113A/en not_active Expired
-
1973
- 1973-04-17 NO NO1639/73A patent/NO137082C/en unknown
- 1973-04-18 IE IE614/73A patent/IE37549B1/en unknown
- 1973-04-24 CA CA170,075A patent/CA1004828A/en not_active Expired
- 1973-04-25 DE DE2320877A patent/DE2320877B2/en not_active Ceased
- 1973-04-25 FR FR7314935A patent/FR2182055B1/fr not_active Expired
- 1973-04-25 NL NL7305765A patent/NL7305765A/xx not_active Application Discontinuation
- 1973-04-25 IN IN966/CAL/73A patent/IN140334B/en unknown
- 1973-04-25 SE SE7305814A patent/SE395263B/en unknown
- 1973-04-25 ES ES414069A patent/ES414069A1/en not_active Expired
- 1973-04-25 TR TR18445A patent/TR18445A/en unknown
- 1973-04-26 JP JP48046871A patent/JPS4999993A/ja active Pending
- 1973-04-26 BE BE130427A patent/BE798737A/en unknown
- 1973-04-26 CH CH599273A patent/CH613916A5/en not_active IP Right Cessation
- 1973-04-26 DD DD170600A patent/DD109362A5/xx unknown
- 1973-04-26 RO RO7385793A patent/RO69802A/en unknown
- 1973-04-26 OA OA54887A patent/OA04403A/en unknown
- 1973-04-26 FI FI1342/73A patent/FI59077C/en active
- 1973-04-26 RO RO7374626A patent/RO67820A/en unknown
-
1975
- 1975-10-24 AU AU85994/75A patent/AU8599475A/en not_active Expired
- 1975-12-11 FR FR7538023A patent/FR2289442A1/en active Granted
- 1975-12-11 FR FR7538022A patent/FR2289441A1/en active Granted
-
1978
- 1978-12-31 MY MY197885A patent/MY7800085A/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| AU5488473A (en) | 1974-10-31 |
| DE2320877B2 (en) | 1980-03-20 |
| NO137082B (en) | 1977-09-19 |
| FR2289442B1 (en) | 1979-02-02 |
| JPS4999993A (en) | 1974-09-20 |
| IN140334B (en) | 1976-10-16 |
| FR2289442A1 (en) | 1976-05-28 |
| FI59077B (en) | 1981-02-27 |
| SE395263B (en) | 1977-08-08 |
| FR2289441B1 (en) | 1979-02-02 |
| RO69802B (en) | 1983-06-30 |
| IE37549B1 (en) | 1977-08-17 |
| NO137082C (en) | 1977-12-28 |
| IE37549L (en) | 1973-10-26 |
| FR2182055A1 (en) | 1973-12-07 |
| GB1436113A (en) | 1976-05-19 |
| DD109362A5 (en) | 1974-11-05 |
| TR18445A (en) | 1977-02-16 |
| FR2182055B1 (en) | 1977-01-07 |
| AU8599475A (en) | 1975-12-18 |
| OA04403A (en) | 1980-02-29 |
| RO69802A (en) | 1983-07-07 |
| FR2289441A1 (en) | 1976-05-28 |
| FI59077C (en) | 1981-06-10 |
| DE2320877A1 (en) | 1973-11-15 |
| BE798737A (en) | 1973-10-26 |
| CH613916A5 (en) | 1979-10-31 |
| RO67820A (en) | 1980-01-15 |
| NL7305765A (en) | 1973-10-30 |
| MY7800085A (en) | 1978-12-31 |
| CA1004828A (en) | 1977-02-08 |
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