FR2342249B1 - - Google Patents
Info
- Publication number
- FR2342249B1 FR2342249B1 FR7705662A FR7705662A FR2342249B1 FR 2342249 B1 FR2342249 B1 FR 2342249B1 FR 7705662 A FR7705662 A FR 7705662A FR 7705662 A FR7705662 A FR 7705662A FR 2342249 B1 FR2342249 B1 FR 2342249B1
- Authority
- FR
- France
- 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
- C01B25/26—Phosphates
- C01B25/30—Alkali metal phosphates
- C01B25/301—Preparation from liquid orthophosphoric acid or from an acid solution or suspension of orthophosphates
- C01B25/303—Preparation from liquid orthophosphoric acid or from an acid solution or suspension of orthophosphates with elimination of impurities
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Inorganic Compounds Of Heavy Metals (AREA)
- Removal Of Specific Substances (AREA)
- Compounds Of Iron (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2608029A DE2608029C2 (de) | 1976-02-27 | 1976-02-27 | Verfahren zur Herstellung einer Alkaliphosphatlösung aus Naßverfahrensphosphorsäuren |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2342249A1 FR2342249A1 (fr) | 1977-09-23 |
FR2342249B1 true FR2342249B1 (US07345094-20080318-C00003.png) | 1981-10-02 |
Family
ID=5971047
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7705662A Granted FR2342249A1 (fr) | 1976-02-27 | 1977-02-25 | Procede de preparation de solutions de phosphates alcalins pures a partir d'acides phosphoriques par voie humide |
Country Status (8)
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2855922A1 (de) * | 1978-12-23 | 1980-07-10 | Hoechst Ag | Verfahren zur herstellung von zinkfreien alkaliphosphatloesungen |
SE418845B (sv) * | 1979-05-10 | 1981-06-29 | Boliden Ab | Forfarande for rening av vatprocessfosforsyra |
US4285920A (en) * | 1979-11-08 | 1981-08-25 | Stauffer Chemical Company | Solvent extraction process for preparing purified phosphoric acid and sodium phosphate salts |
DE3437685C2 (de) * | 1984-10-15 | 1987-03-12 | Hoechst Ag, 6230 Frankfurt | Verfahren zur Herstellung einer vanadiumarmen Alkaliphosphatlösung |
DE3938225A1 (de) * | 1989-11-17 | 1991-05-23 | Hoechst Ag | Verfahren zur herstellung gereinigter alkaliphosphatloesung |
DE4327401A1 (de) * | 1993-08-14 | 1995-02-16 | Hoechst Ag | Verfahren zur Entfernung von Blei und Cadmium aus Phosphorsäure |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2174138A (en) * | 1938-04-27 | 1939-09-26 | Paul E Sage | Powder-feeding device |
US3305305A (en) * | 1962-12-26 | 1967-02-21 | Hooker Chemical Corp | Purification of phosphate solutions |
US3493336A (en) * | 1964-06-18 | 1970-02-03 | Electric Reduction Co | Manufacture of alkali metal phosphates |
US3421845A (en) * | 1965-06-07 | 1969-01-14 | Hooker Chemical Corp | Production of sodium phosphates |
DE1811994B2 (de) * | 1968-11-30 | 1971-02-04 | Knapsack AG. 5030 Hurth | Verfahren zur Herstellung von Alkali phosphatlosungen |
DE2035505C3 (de) * | 1970-07-17 | 1974-06-12 | Knapsack Ag, 5033 Huerth-Knapsack | Verfahren zur Herstellung reiner Alkaliphosphatlösungen |
DE2323292C3 (de) * | 1973-05-09 | 1981-10-29 | Kali Und Salz Ag, 3500 Kassel | Verfahren zur Herstellung von Natrium- und/oder Kaliumphosphaten |
-
1976
- 1976-02-27 DE DE2608029A patent/DE2608029C2/de not_active Expired
-
1977
- 1977-02-11 ES ES455855A patent/ES455855A1/es not_active Expired
- 1977-02-18 GB GB6922/77A patent/GB1543522A/en not_active Expired
- 1977-02-23 US US05/771,167 patent/US4134962A/en not_active Expired - Lifetime
- 1977-02-25 BE BE175255A patent/BE851825A/xx not_active IP Right Cessation
- 1977-02-25 IT IT48221/77A patent/IT1105703B/it active
- 1977-02-25 FR FR7705662A patent/FR2342249A1/fr active Granted
- 1977-02-25 NL NLAANVRAGE7702068,A patent/NL184315C/xx not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
NL184315B (nl) | 1989-01-16 |
FR2342249A1 (fr) | 1977-09-23 |
DE2608029A1 (de) | 1977-09-01 |
ES455855A1 (es) | 1978-01-01 |
GB1543522A (en) | 1979-04-04 |
DE2608029C2 (de) | 1984-02-23 |
NL7702068A (nl) | 1977-08-30 |
US4134962A (en) | 1979-01-16 |
IT1105703B (it) | 1985-11-04 |
NL184315C (nl) | 1989-06-16 |
BE851825A (fr) | 1977-08-25 |
Similar Documents
Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |