SU671716A3 - Способ очистки фосфорной кислоты - Google Patents
Способ очистки фосфорной кислотыInfo
- Publication number
- SU671716A3 SU671716A3 SU752176256A SU2176256A SU671716A3 SU 671716 A3 SU671716 A3 SU 671716A3 SU 752176256 A SU752176256 A SU 752176256A SU 2176256 A SU2176256 A SU 2176256A SU 671716 A3 SU671716 A3 SU 671716A3
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- calcium sulfate
- phosphoric acid
- acid
- precipitate
- sulfate hemihydrate
- 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
- C01B25/237—Selective elimination of impurities
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Removal Of Specific Substances (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Processing Of Solid Wastes (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2447390A DE2447390C3 (de) | 1974-10-04 | 1974-10-04 | Verfahren zur Reinigung von Naßphosphorsäure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU671716A3 true SU671716A3 (ru) | 1979-06-30 |
Family
ID=5927552
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU752176256A SU671716A3 (ru) | 1974-10-04 | 1975-10-02 | Способ очистки фосфорной кислоты |
Country Status (21)
| Country | Link |
|---|---|
| JP (1) | JPS5163394A (fr) |
| AT (1) | AT358525B (fr) |
| BE (1) | BE834003A (fr) |
| BR (1) | BR7506423A (fr) |
| CA (1) | CA1045339A (fr) |
| CH (1) | CH599900A5 (fr) |
| DD (1) | DD120417A5 (fr) |
| DE (1) | DE2447390C3 (fr) |
| DK (1) | DK137229C (fr) |
| EG (1) | EG11849A (fr) |
| ES (1) | ES441121A1 (fr) |
| FI (1) | FI752749A (fr) |
| FR (1) | FR2286790A1 (fr) |
| GB (1) | GB1524552A (fr) |
| IL (1) | IL48236A (fr) |
| IT (1) | IT1047666B (fr) |
| NL (1) | NL170839C (fr) |
| SE (1) | SE401668B (fr) |
| SU (1) | SU671716A3 (fr) |
| TR (1) | TR19680A (fr) |
| ZA (1) | ZA755820B (fr) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2447347A1 (fr) * | 1979-01-24 | 1980-08-22 | Rhone Poulenc Ind | Procede de traitement d'un acide phosphorique impur |
| SE418845B (sv) | 1979-05-10 | 1981-06-29 | Boliden Ab | Forfarande for rening av vatprocessfosforsyra |
| DE3134847A1 (de) * | 1981-09-03 | 1983-03-17 | Hoechst Ag, 6000 Frankfurt | "verfahren zur gewinnung cadmium-freier rohphosphorsaeure" |
| DE3202659A1 (de) * | 1982-01-28 | 1983-08-04 | Hoechst Ag, 6230 Frankfurt | Verfahren zur reinigung von nassverfahrensphosphorsaeure |
| DE3360853D1 (en) * | 1982-02-12 | 1985-10-31 | Hoechst Ag | Process for the reduction of the heavy metal content in raw phosphate |
| IL69100A (en) * | 1982-07-21 | 1986-11-30 | Hoechst Ag | Process for removing heavy metal ions and arsenic from wet-processed phosphoric acid |
| DE3325862A1 (de) * | 1983-07-18 | 1985-01-31 | Hoechst Ag, 6230 Frankfurt | Verfahren und vorrichtung zur entfernung von organischen verunreinigungen aus nassverfahrensphosphorsaeure |
| DE19703884C2 (de) | 1997-02-03 | 1999-04-29 | Bk Giulini Chem Gmbh & Co Ohg | Verfahren zur Reinigung von Naßverfahrensphosphorsäure |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1472520A (fr) * | 1966-03-23 | 1967-03-10 | Marchon Products Ltd | Procédé de désulfatation de l'acide phosphorique |
-
1974
- 1974-10-04 DE DE2447390A patent/DE2447390C3/de not_active Expired
-
1975
- 1975-09-09 GB GB37054/75A patent/GB1524552A/en not_active Expired
- 1975-09-12 ZA ZA00755820A patent/ZA755820B/xx unknown
- 1975-09-18 CA CA235,803A patent/CA1045339A/fr not_active Expired
- 1975-09-19 ES ES441121A patent/ES441121A1/es not_active Expired
- 1975-09-22 TR TR19680A patent/TR19680A/xx unknown
- 1975-09-27 EG EG573/75A patent/EG11849A/xx active
- 1975-09-30 BE BE160530A patent/BE834003A/fr not_active IP Right Cessation
- 1975-10-01 NL NLAANVRAGE7511568,A patent/NL170839C/xx not_active IP Right Cessation
- 1975-10-01 FI FI752749A patent/FI752749A/fi not_active Application Discontinuation
- 1975-10-02 IT IT51611/75A patent/IT1047666B/it active
- 1975-10-02 DD DD188691A patent/DD120417A5/xx unknown
- 1975-10-02 AT AT753175A patent/AT358525B/de not_active IP Right Cessation
- 1975-10-02 SE SE7511066A patent/SE401668B/xx not_active IP Right Cessation
- 1975-10-02 SU SU752176256A patent/SU671716A3/ru active
- 1975-10-02 BR BR7506423*A patent/BR7506423A/pt unknown
- 1975-10-03 CH CH1287775A patent/CH599900A5/xx not_active IP Right Cessation
- 1975-10-03 DK DK447575A patent/DK137229C/da not_active IP Right Cessation
- 1975-10-03 JP JP50119685A patent/JPS5163394A/ja active Granted
- 1975-10-03 FR FR7530417A patent/FR2286790A1/fr active Granted
- 1975-10-03 IL IL48236A patent/IL48236A/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| DD120417A5 (fr) | 1976-06-12 |
| DK137229B (da) | 1978-02-06 |
| SE7511066L (sv) | 1976-04-05 |
| DK137229C (da) | 1978-07-10 |
| IL48236A (en) | 1978-04-30 |
| CA1045339A (fr) | 1979-01-02 |
| DK447575A (da) | 1976-04-05 |
| FR2286790B1 (fr) | 1979-10-12 |
| DE2447390B2 (de) | 1977-10-20 |
| FI752749A (fr) | 1976-04-05 |
| NL170839C (nl) | 1983-01-03 |
| AT358525B (de) | 1980-09-10 |
| IL48236A0 (en) | 1975-12-31 |
| DE2447390A1 (de) | 1976-04-08 |
| EG11849A (en) | 1978-06-30 |
| DE2447390C3 (de) | 1983-11-17 |
| NL170839B (nl) | 1982-08-02 |
| ES441121A1 (es) | 1977-03-16 |
| JPS537319B2 (fr) | 1978-03-16 |
| ATA753175A (de) | 1980-02-15 |
| FR2286790A1 (fr) | 1976-04-30 |
| IT1047666B (it) | 1980-10-20 |
| TR19680A (tr) | 1979-10-05 |
| BR7506423A (pt) | 1976-08-10 |
| ZA755820B (en) | 1976-08-25 |
| GB1524552A (en) | 1978-09-13 |
| BE834003A (fr) | 1976-03-30 |
| SE401668B (sv) | 1978-05-22 |
| JPS5163394A (en) | 1976-06-01 |
| CH599900A5 (fr) | 1978-06-15 |
| NL7511568A (nl) | 1976-04-06 |
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