ZA72647B - Defluorination of wet process phosphoric acid - Google Patents
Defluorination of wet process phosphoric acidInfo
- Publication number
- ZA72647B ZA72647B ZA720647A ZA72647A ZA72647B ZA 72647 B ZA72647 B ZA 72647B ZA 720647 A ZA720647 A ZA 720647A ZA 72647 A ZA72647 A ZA 72647A ZA 72647 B ZA72647 B ZA 72647B
- Authority
- ZA
- South Africa
- Prior art keywords
- defluorination
- phosphoric acid
- wet process
- process phosphoric
- wet
- Prior art date
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
-
- 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)
- Silicon Compounds (AREA)
- Removal Of Specific Substances (AREA)
- Processing Of Solid Wastes (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US12409971A | 1971-03-15 | 1971-03-15 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ZA72647B true ZA72647B (en) | 1972-10-25 |
Family
ID=22412766
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ZA720647A ZA72647B (en) | 1971-03-15 | 1972-02-01 | Defluorination of wet process phosphoric acid |
Country Status (9)
| Country | Link |
|---|---|
| US (1) | US3718729A (en) |
| AU (1) | AU462975B2 (en) |
| BR (1) | BR7105809D0 (en) |
| DE (1) | DE2212576A1 (en) |
| ES (1) | ES400819A1 (en) |
| FR (1) | FR2130302B1 (en) |
| GB (1) | GB1383832A (en) |
| IT (1) | IT954349B (en) |
| ZA (1) | ZA72647B (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS516894A (en) * | 1974-07-09 | 1976-01-20 | Toyo Soda Mfg Co Ltd | Seiseirinsanno seizoho |
| US4083937A (en) * | 1974-07-09 | 1978-04-11 | Toyo Soda Manufacturing Co., Ltd. | Process for preparing pure phosphoric acid |
| FR2302275A1 (en) * | 1975-02-25 | 1976-09-24 | Prorea | PROCESS FOR SIMULTANEOUS CONCENTRATION AND DEPURATION OF PHOSPHORIC ACID |
| DE2938850B1 (en) * | 1979-09-26 | 1980-06-26 | Uhde Gmbh | Process for the defluorination of phosphoric acid |
| US4377560A (en) * | 1981-07-13 | 1983-03-22 | Occidental Research Corporation | Process for producing low aluminum content phosphoric acid from high aluminum matrix |
| US5002744A (en) * | 1990-05-11 | 1991-03-26 | Imc Fertilizer, Inc. | Method for defluorinating wet process phosphoric acid |
| US5236679A (en) * | 1992-05-06 | 1993-08-17 | Freeport-Mcmoran Resource Partners | Removal of aluminum contamination during production of phosphoric acid |
| CN110467166A (en) * | 2019-09-20 | 2019-11-19 | 瓮福达州化工有限责任公司 | A kind of wet defluorination of phosphoric acid method |
| CN115285954B (en) * | 2022-08-12 | 2023-10-27 | 宜都兴发化工有限公司 | Method for improving fluorine yield of wet-process phosphoric acid production concentration section |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2933372A (en) * | 1956-11-02 | 1960-04-19 | Int Minerals & Chem Corp | Method of defluorinating phosphatic material |
| US2987376A (en) * | 1956-12-27 | 1961-06-06 | Int Minerals & Chem Corp | Method for defluorination of phosphoric acid |
| US3151941A (en) * | 1960-05-02 | 1964-10-06 | Smith Douglass Company Inc | Defluorination of peosphoric acid |
| US3193351A (en) * | 1961-07-05 | 1965-07-06 | Nat Distillers Chem Corp | Removal of fluorine from wet process prosphoric acid |
| NL151045B (en) * | 1964-11-30 | 1976-10-15 | Windmill Holland Bv | METHOD FOR THE REMOVAL OF FLUOR FROM PHOSPHORIC ACID. |
-
1971
- 1971-03-15 US US00124099A patent/US3718729A/en not_active Expired - Lifetime
- 1971-09-02 BR BR5809/71A patent/BR7105809D0/en unknown
-
1972
- 1972-02-01 ZA ZA720647A patent/ZA72647B/en unknown
- 1972-02-04 AU AU38652/72A patent/AU462975B2/en not_active Expired
- 1972-02-09 GB GB599772A patent/GB1383832A/en not_active Expired
- 1972-03-07 IT IT48817/72A patent/IT954349B/en active
- 1972-03-15 FR FR7209088A patent/FR2130302B1/fr not_active Expired
- 1972-03-15 ES ES400819A patent/ES400819A1/en not_active Expired
- 1972-03-15 DE DE19722212576 patent/DE2212576A1/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| US3718729A (en) | 1973-02-27 |
| AU3865272A (en) | 1973-08-09 |
| BR7105809D0 (en) | 1973-04-05 |
| FR2130302A1 (en) | 1972-11-03 |
| FR2130302B1 (en) | 1977-07-15 |
| AU462975B2 (en) | 1975-06-26 |
| DE2212576A1 (en) | 1972-09-21 |
| ES400819A1 (en) | 1975-02-01 |
| GB1383832A (en) | 1974-02-12 |
| IT954349B (en) | 1973-08-30 |
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