FR1456263A - Procédé de défluoration de l'acide phosphorique - Google Patents
Procédé de défluoration de l'acide phosphoriqueInfo
- Publication number
- FR1456263A FR1456263A FR40063A FR40063A FR1456263A FR 1456263 A FR1456263 A FR 1456263A FR 40063 A FR40063 A FR 40063A FR 40063 A FR40063 A FR 40063A FR 1456263 A FR1456263 A FR 1456263A
- Authority
- FR
- France
- Prior art keywords
- phosphoric acid
- defluorination process
- acid defluorination
- phosphoric
- defluorination
- 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
- C01B25/2372—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)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
- Catalysts (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Silicates, Zeolites, And Molecular Sieves (AREA)
- Removal Of Specific Substances (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL6413920A NL151045B (nl) | 1964-11-30 | 1964-11-30 | Werkwijze voor het verwijderen van fluor uit fosforzuur. |
Publications (1)
Publication Number | Publication Date |
---|---|
FR1456263A true FR1456263A (fr) | 1966-10-21 |
Family
ID=19791540
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR40063A Expired FR1456263A (fr) | 1964-11-30 | 1965-11-29 | Procédé de défluoration de l'acide phosphorique |
Country Status (9)
Country | Link |
---|---|
JP (1) | JPS4811475B1 (fi) |
BE (1) | BE672707A (fi) |
DE (1) | DE1287053C2 (fi) |
DK (1) | DK109385C (fi) |
FI (1) | FI45315C (fi) |
FR (1) | FR1456263A (fi) |
GB (1) | GB1127247A (fi) |
NL (1) | NL151045B (fi) |
SE (1) | SE319757C (fi) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3718729A (en) * | 1971-03-15 | 1973-02-27 | American Cyanamid Co | Defluorination of wet process phosphoric acid |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2719701C3 (de) * | 1976-05-06 | 1986-10-02 | W.R. Grace & Co., New York, N.Y. | Verfahren zur Überführung von Naßphosphorsäure in eine nicht zu Ausfällungen neigende konzentrierte Phosphorsäure |
AU499517B2 (en) * | 1978-03-06 | 1979-04-26 | W. R. Grace & Co | Treating wet-process phosphoric acid |
US4311681A (en) | 1980-05-19 | 1982-01-19 | Fmc Corporation | Method of regenerating phosphoric acid extraction solvent |
DE3913853A1 (de) * | 1989-04-27 | 1990-10-31 | Hoechst Ag | Verfahren zur aufarbeitung von phosphorsaeure |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2123785A (en) * | 1936-03-02 | 1938-07-12 | Victor Chemical Works | Removal of fluorine from phosphoric acid |
-
1964
- 1964-11-30 NL NL6413920A patent/NL151045B/xx unknown
-
1965
- 1965-11-23 GB GB4978465A patent/GB1127247A/en not_active Expired
- 1965-11-23 BE BE672707D patent/BE672707A/xx unknown
- 1965-11-24 SE SE6515188A patent/SE319757C/xx unknown
- 1965-11-25 DE DE1965E0030531 patent/DE1287053C2/de not_active Expired
- 1965-11-27 DK DK610865A patent/DK109385C/da active
- 1965-11-29 FR FR40063A patent/FR1456263A/fr not_active Expired
- 1965-11-29 FI FI287765A patent/FI45315C/fi active
- 1965-11-30 JP JP7318965A patent/JPS4811475B1/ja active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3718729A (en) * | 1971-03-15 | 1973-02-27 | American Cyanamid Co | Defluorination of wet process phosphoric acid |
Also Published As
Publication number | Publication date |
---|---|
DE1287053C2 (de) | 1973-12-20 |
NL151045B (nl) | 1976-10-15 |
SE319757C (fi) | 1975-06-30 |
SE319757B (fi) | 1970-01-26 |
JPS4811475B1 (fi) | 1973-04-13 |
DE1287053B (de) | 1969-01-16 |
FI45315C (fi) | 1972-05-10 |
GB1127247A (en) | 1968-09-18 |
NL6413920A (fi) | 1966-05-31 |
BE672707A (fi) | 1966-03-16 |
DK109385C (da) | 1968-04-22 |
FI45315B (fi) | 1972-01-31 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
FR1506968A (fr) | Procédé de fabrication d'acide phosphorique | |
FR1468050A (fr) | Procédé de production de l'acide phosphorique | |
FR1543753A (fr) | Procédé de production d'acide phosphorique | |
FR1435877A (fr) | Procédé de purification d'acide phosphorique | |
FR1427531A (fr) | Procédé de purification d'acide phosphorique | |
FR1456263A (fr) | Procédé de défluoration de l'acide phosphorique | |
FR1509607A (fr) | Procédé de purification de l'acide phosphorique | |
CH429679A (fr) | Procédé de déshydratation de l'acide borique | |
FR1472520A (fr) | Procédé de désulfatation de l'acide phosphorique | |
FR1534672A (fr) | Procédé de fabrication de l'acide phosphorique | |
FR1352951A (fr) | Procédé de concentration d'acide phosphorique | |
CH476637A (fr) | Procédé de fabrication d'acide phosphorique | |
FR1396077A (fr) | Procédé de purification d'acide phosphorique | |
FR1387492A (fr) | Procédé de purification d'acide phosphorique | |
FR86067E (fr) | Procédé de concentration d'acide phosphorique | |
FR1461181A (fr) | Procédé de préparation de l'acide malique | |
FR1480663A (fr) | Procédé de production d'acide phosphorique | |
FR1462259A (fr) | Procédé de préparation de l'acide delta3-pyrroline-2-carboxylique | |
CH434236A (fr) | Procédé de préparation de l'acide 11-iodo-10-undécynoïque | |
FR1487428A (fr) | Procédé de fabrication d'acide phosphorique | |
FR1418568A (fr) | Procédé de fabrication de l'acide phosphorique | |
CH445479A (fr) | Procédé de préparation d'acide trans-4-aminométhyl-cyclohexane-1-carboxylique | |
FR1462605A (fr) | Procédé de préparation d'acide sulfamique | |
FR1433279A (fr) | Procédé de préparation de l'acide 5'-guanylique | |
FR1427424A (fr) | Procédé de préparation de l'acide cyanhydrique |