CA1001824A - Defluorination of phosphoric acid - Google Patents
Defluorination of phosphoric acidInfo
- Publication number
- CA1001824A CA1001824A CA169,888A CA169888A CA1001824A CA 1001824 A CA1001824 A CA 1001824A CA 169888 A CA169888 A CA 169888A CA 1001824 A CA1001824 A CA 1001824A
- Authority
- CA
- Canada
- Prior art keywords
- defluorination
- phosphoric acid
- phosphoric
- acid
- 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
- C01B25/22—Preparation by reacting phosphate-containing material with an acid, e.g. wet process
- C01B25/222—Preparation by reacting phosphate-containing material with an acid, e.g. wet process with sulfuric acid, a mixture of acids mainly consisting of sulfuric acid or a mixture of compounds forming it in situ, e.g. a mixture of sulfur dioxide, water and oxygen
-
- 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
- C01B25/2208—Preparation by reacting phosphate-containing material with an acid, e.g. wet process with an acid or a mixture of acids other than sulfuric acid
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Silicates, Zeolites, And Molecular Sieves (AREA)
- Silicon Compounds (AREA)
- Extraction Or Liquid Replacement (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19722221745 DE2221745C3 (en) | 1972-05-04 | 1972-05-04 | Process for the defluorination of phosphoric acid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1001824A true CA1001824A (en) | 1976-12-21 |
Family
ID=5843984
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA169,888A Expired CA1001824A (en) | 1972-05-04 | 1973-04-30 | Defluorination of phosphoric acid |
Country Status (5)
| Country | Link |
|---|---|
| CA (1) | CA1001824A (en) |
| DE (1) | DE2221745C3 (en) |
| FR (1) | FR2183277B1 (en) |
| GB (1) | GB1396217A (en) |
| NL (1) | NL7305595A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1299977C (en) * | 2005-11-04 | 2007-02-14 | 华中师范大学 | Method of fast eliminating solid matter and fluorine in wet method crude phoshporic acid |
-
1972
- 1972-05-04 DE DE19722221745 patent/DE2221745C3/en not_active Expired
-
1973
- 1973-04-19 NL NL7305595A patent/NL7305595A/xx not_active Application Discontinuation
- 1973-04-30 CA CA169,888A patent/CA1001824A/en not_active Expired
- 1973-05-03 GB GB2107973A patent/GB1396217A/en not_active Expired
- 1973-05-04 FR FR7316190A patent/FR2183277B1/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE2221745B2 (en) | 1980-04-03 |
| DE2221745C3 (en) | 1980-11-27 |
| FR2183277B1 (en) | 1976-11-12 |
| FR2183277A1 (en) | 1973-12-14 |
| DE2221745A1 (en) | 1973-11-15 |
| GB1396217A (en) | 1975-06-04 |
| NL7305595A (en) | 1973-11-06 |
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