CA967721A - Defluorination of gypsum in the wet process for preparing phosphoric acid - Google Patents
Defluorination of gypsum in the wet process for preparing phosphoric acidInfo
- Publication number
- CA967721A CA967721A CA135,919A CA135919A CA967721A CA 967721 A CA967721 A CA 967721A CA 135919 A CA135919 A CA 135919A CA 967721 A CA967721 A CA 967721A
- Authority
- CA
- Canada
- Prior art keywords
- defluorination
- gypsum
- phosphoric acid
- wet process
- preparing phosphoric
- 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
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 title 2
- 229910000147 aluminium phosphate Inorganic materials 0.000 title 1
- 238000006115 defluorination reaction Methods 0.000 title 1
- 229910052602 gypsum Inorganic materials 0.000 title 1
- 239000010440 gypsum Substances 0.000 title 1
- 238000004519 manufacturing process Methods 0.000 title 1
Classifications
-
- 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
- C01B33/10—Compounds containing silicon, fluorine, and other elements
- C01B33/103—Fluosilicic acid; Salts thereof
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F11/00—Compounds of calcium, strontium, or barium
- C01F11/46—Sulfates
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Silicon Compounds (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19712109715 DE2109715C3 (en) | 1971-03-02 | Process for the production of phosphoric acid | |
| DE19722208049 DE2208049C3 (en) | 1972-02-21 | Process for the production of phosphoric acid by the wet process with the production of a gypsum suitable for further processing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA967721A true CA967721A (en) | 1975-05-20 |
Family
ID=25760743
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA135,919A Expired CA967721A (en) | 1971-03-02 | 1972-03-01 | Defluorination of gypsum in the wet process for preparing phosphoric acid |
Country Status (6)
| Country | Link |
|---|---|
| BE (1) | BE779982A (en) |
| CA (1) | CA967721A (en) |
| FR (1) | FR2128432B1 (en) |
| GB (1) | GB1386291A (en) |
| NL (1) | NL7202664A (en) |
| SE (1) | SE365490B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2396362A1 (en) | 2000-01-05 | 2001-07-12 | Saint-Gobain Technical Fabrics Of America, Inc. | Smooth reinforced cementitious boards and methods of making same |
| CN109485083A (en) * | 2018-12-20 | 2019-03-19 | 四川久大蓬莱盐化有限公司 | A kind of preparation method and preparation system of feed addictive calcium sulfate |
| CN113072046B (en) * | 2021-04-09 | 2022-06-17 | 郑州大学 | Method for removing impurities and improving whiteness of phosphogypsum through flotation method |
| CN113603249B (en) * | 2021-08-24 | 2023-10-31 | 云南弘祥化工有限公司 | Process for precipitating sewage in phosphogypsum slag field for sodium fluosilicate production |
| CN115784238B (en) * | 2022-10-18 | 2024-03-12 | 宜都兴发化工有限公司 | Method for recycling soluble fluorine in phosphogypsum |
-
1972
- 1972-02-29 FR FR7206907A patent/FR2128432B1/fr not_active Expired
- 1972-02-29 BE BE779982A patent/BE779982A/en unknown
- 1972-03-01 GB GB958572A patent/GB1386291A/en not_active Expired
- 1972-03-01 CA CA135,919A patent/CA967721A/en not_active Expired
- 1972-03-01 NL NL7202664A patent/NL7202664A/xx not_active Application Discontinuation
- 1972-03-02 SE SE02694/72A patent/SE365490B/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| FR2128432A1 (en) | 1972-10-20 |
| BE779982A (en) | 1972-06-16 |
| FR2128432B1 (en) | 1974-06-28 |
| GB1386291A (en) | 1975-03-05 |
| SE365490B (en) | 1974-03-25 |
| NL7202664A (en) | 1972-09-05 |
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