DE2818728C3 - Verfahren zur Überführung von Naßphosphorsäure in eine nicht zu Ausfällungen neigende konzentrierte Phosphorsäure - Google Patents
Verfahren zur Überführung von Naßphosphorsäure in eine nicht zu Ausfällungen neigende konzentrierte PhosphorsäureInfo
- Publication number
- DE2818728C3 DE2818728C3 DE2818728A DE2818728A DE2818728C3 DE 2818728 C3 DE2818728 C3 DE 2818728C3 DE 2818728 A DE2818728 A DE 2818728A DE 2818728 A DE2818728 A DE 2818728A DE 2818728 C3 DE2818728 C3 DE 2818728C3
- Authority
- DE
- Germany
- Prior art keywords
- phosphoric acid
- acid
- concentrated
- solids
- content
- 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 claims description 40
- 229910000147 aluminium phosphate Inorganic materials 0.000 title claims description 20
- 238000000034 method Methods 0.000 title claims description 13
- 239000002253 acid Substances 0.000 description 25
- 239000007787 solid Substances 0.000 description 16
- YKTSYUJCYHOUJP-UHFFFAOYSA-N [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] Chemical compound [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] YKTSYUJCYHOUJP-UHFFFAOYSA-N 0.000 description 14
- 239000005995 Aluminium silicate Substances 0.000 description 8
- 235000012211 aluminium silicate Nutrition 0.000 description 8
- 229910000323 aluminium silicate Inorganic materials 0.000 description 7
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 6
- 239000010451 perlite Substances 0.000 description 5
- 235000019362 perlite Nutrition 0.000 description 5
- 239000006228 supernatant Substances 0.000 description 5
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 3
- 238000005352 clarification Methods 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 238000004094 preconcentration Methods 0.000 description 3
- BYFGZMCJNACEKR-UHFFFAOYSA-N aluminium(i) oxide Chemical compound [Al]O[Al] BYFGZMCJNACEKR-UHFFFAOYSA-N 0.000 description 2
- 229910052681 coesite Inorganic materials 0.000 description 2
- 229910052906 cristobalite Inorganic materials 0.000 description 2
- 238000002425 crystallisation Methods 0.000 description 2
- 230000008025 crystallization Effects 0.000 description 2
- 230000008021 deposition Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- 235000012239 silicon dioxide Nutrition 0.000 description 2
- PUZPDOWCWNUUKD-UHFFFAOYSA-M sodium fluoride Chemical compound [F-].[Na+] PUZPDOWCWNUUKD-UHFFFAOYSA-M 0.000 description 2
- 229910052682 stishovite Inorganic materials 0.000 description 2
- 229910052905 tridymite Inorganic materials 0.000 description 2
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 1
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 1
- 239000005909 Kieselgur Substances 0.000 description 1
- KKCBUQHMOMHUOY-UHFFFAOYSA-N Na2O Inorganic materials [O-2].[Na+].[Na+] KKCBUQHMOMHUOY-UHFFFAOYSA-N 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 244000309464 bull Species 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 239000000706 filtrate Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229920002401 polyacrylamide Polymers 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 150000004760 silicates Chemical class 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 235000013024 sodium fluoride Nutrition 0.000 description 1
- 239000011775 sodium fluoride Substances 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 235000011149 sulphuric acid Nutrition 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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
- C01B25/235—Clarification; Stabilisation to prevent post-precipitation of dissolved impurities
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Silicates, Zeolites, And Molecular Sieves (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US05/883,381 US4164550A (en) | 1976-05-06 | 1978-03-06 | Production of stabilized wet process phosphoric acid |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| DE2818728A1 DE2818728A1 (de) | 1979-09-13 |
| DE2818728B2 DE2818728B2 (de) | 1980-01-24 |
| DE2818728C3 true DE2818728C3 (de) | 1988-02-11 |
Family
ID=25382470
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE2818728A Expired DE2818728C3 (de) | 1978-03-06 | 1978-04-28 | Verfahren zur Überführung von Naßphosphorsäure in eine nicht zu Ausfällungen neigende konzentrierte Phosphorsäure |
Country Status (8)
| Country | Link |
|---|---|
| JP (1) | JPS54118396A (it) |
| AU (1) | AU499517B2 (it) |
| BR (1) | BR7803039A (it) |
| DE (1) | DE2818728C3 (it) |
| IT (1) | IT1109503B (it) |
| MX (1) | MX148659A (it) |
| NL (1) | NL7805162A (it) |
| ZA (1) | ZA782579B (it) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0548018Y2 (it) * | 1989-01-20 | 1993-12-20 |
Family Cites Families (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA776577A (en) * | 1968-01-23 | G. Brown Martin | Production of phosphoric acid and gypsum | |
| CA637832A (en) * | 1962-03-06 | American Cyanamid Company | Phosphoric acid preparation | |
| CA463505A (en) * | 1950-03-07 | R. Singer Marshall | Manufacture of phosphoric acid | |
| US2883266A (en) * | 1956-06-29 | 1959-04-21 | Swift & Co | Production of sodium silico fluoride and fluorine-free phosphoric acid |
| 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 |
| US3141734A (en) * | 1960-10-25 | 1964-07-21 | Int Minerals & Chem Corp | Method of clarifying acidic phosphatic solutions |
| US3160495A (en) * | 1961-03-28 | 1964-12-08 | Minerals & Chem Philipp Corp | Wet process phosphoric acid and liquid fertilizer compositions containing the same |
| US3193351A (en) * | 1961-07-05 | 1965-07-06 | Nat Distillers Chem Corp | Removal of fluorine from wet process prosphoric acid |
| NL131991C (it) * | 1962-11-09 | |||
| GB1113922A (en) * | 1964-08-19 | 1968-05-15 | Fisons Ltd | Clarifying phosphoric acid |
| NL151045B (nl) * | 1964-11-30 | 1976-10-15 | Windmill Holland Bv | Werkwijze voor het verwijderen van fluor uit fosforzuur. |
| US3528771A (en) * | 1967-10-10 | 1970-09-15 | Int Minerals & Chem Corp | Phosphoric acid clarification |
| CA1042180A (en) * | 1973-12-13 | 1978-11-14 | Sergio O. Pierres | Stabilization of wet process phosphoric acid |
| 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 |
-
1978
- 1978-04-27 AU AU35531/78A patent/AU499517B2/en not_active Expired
- 1978-04-28 DE DE2818728A patent/DE2818728C3/de not_active Expired
- 1978-05-05 ZA ZA00782579A patent/ZA782579B/xx unknown
- 1978-05-05 IT IT23108/78A patent/IT1109503B/it active
- 1978-05-10 MX MX173415A patent/MX148659A/es unknown
- 1978-05-12 NL NL7805162A patent/NL7805162A/xx active Search and Examination
- 1978-05-12 JP JP5569478A patent/JPS54118396A/ja active Granted
- 1978-05-15 BR BR7803039A patent/BR7803039A/pt unknown
Also Published As
| Publication number | Publication date |
|---|---|
| NL7805162A (nl) | 1979-09-10 |
| IT7823108A0 (it) | 1978-05-05 |
| DE2818728B2 (de) | 1980-01-24 |
| DE2818728A1 (de) | 1979-09-13 |
| JPS6149243B2 (it) | 1986-10-28 |
| ZA782579B (en) | 1979-04-25 |
| BR7803039A (pt) | 1979-11-27 |
| JPS54118396A (en) | 1979-09-13 |
| IT1109503B (it) | 1985-12-16 |
| MX148659A (es) | 1983-05-26 |
| AU499517B2 (en) | 1979-04-26 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| OAP | Request for examination filed | ||
| OD | Request for examination | ||
| AF | Is addition to no. |
Ref country code: DE Ref document number: 2719701 Format of ref document f/p: P |
|
| AF | Is addition to no. |
Ref country code: DE Ref document number: 2719701 Format of ref document f/p: P |
|
| C3 | Grant after two publication steps (3rd publication) | ||
| 8340 | Patent of addition ceased/non-payment of fee of main patent |