ES315328A1 - Procedure for the manufacture of phosphoric acid. (Machine-translation by Google Translate, not legally binding) - Google Patents
Procedure for the manufacture of phosphoric acid. (Machine-translation by Google Translate, not legally binding)Info
- Publication number
- ES315328A1 ES315328A1 ES0315328A ES315328A ES315328A1 ES 315328 A1 ES315328 A1 ES 315328A1 ES 0315328 A ES0315328 A ES 0315328A ES 315328 A ES315328 A ES 315328A ES 315328 A1 ES315328 A1 ES 315328A1
- Authority
- ES
- Spain
- Prior art keywords
- lime
- translation
- manufacture
- machine
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Removal Of Specific Substances (AREA)
- Fertilizers (AREA)
Abstract
Process for the manufacture of phosphoric acid by attack of the natural phosphates with sulfuric acid, characterized in that in a first phase, a slurry containing the lime sulphate is produced in the form of a semi-hydrate, the reaction being maintained for a period of the order of 1 hour, at a controlled temperature, higher than the transition between the sulphate forms of semi-hydrated lime and lime sulphate dihydrate, ie around 90º C; and in a second phase the semi-hydrated lime sulfate is transformed into lime sulphate dihydrate, at the same time that the attack reaction of the phosphates is terminated in two successive phases which take place at decreasing order temperatures, respectively, of 80º C and about 70º C, or less; the duration of these last phases is respectively of the order of 2 to 4 hours for the first and of 3 to 6 hours for the second. (Machine-translation by Google Translate, not legally binding)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR981874A FR1409405A (en) | 1964-07-16 | 1964-07-16 | Process for the manufacture of phosphoric acid and apparatus for carrying out such a process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ES315328A1 true ES315328A1 (en) | 1966-02-16 |
Family
ID=8834663
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES0315328A Expired ES315328A1 (en) | 1964-07-16 | 1965-07-14 | Procedure for the manufacture of phosphoric acid. (Machine-translation by Google Translate, not legally binding) |
Country Status (6)
| Country | Link |
|---|---|
| BE (1) | BE666312A (en) |
| ES (1) | ES315328A1 (en) |
| FR (1) | FR1409405A (en) |
| GB (1) | GB1094539A (en) |
| LU (1) | LU49018A1 (en) |
| NL (1) | NL6509158A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3653826A (en) * | 1967-09-21 | 1972-04-04 | Nissan Chemical Ind Ltd | Process for the production of phosphoric acid at a high concentration and a gypsum by-product of improved quality |
| US4853201A (en) * | 1988-07-11 | 1989-08-01 | Occidental Chemical Corporation | Recovery of P2 O5 values from phosphoric acid hemihydrate crystals |
| CN105384157A (en) * | 2015-11-09 | 2016-03-09 | 东华工程科技股份有限公司 | Technology for producing phosphoric acid through half-hydrate-dihydrate method |
-
1964
- 1964-07-16 FR FR981874A patent/FR1409405A/en not_active Expired
-
1965
- 1965-07-02 BE BE666312A patent/BE666312A/xx unknown
- 1965-07-06 GB GB28485/65A patent/GB1094539A/en not_active Expired
- 1965-07-08 LU LU49018A patent/LU49018A1/xx unknown
- 1965-07-14 ES ES0315328A patent/ES315328A1/en not_active Expired
- 1965-07-15 NL NL6509158A patent/NL6509158A/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| GB1094539A (en) | 1967-12-13 |
| FR1409405A (en) | 1965-08-27 |
| NL6509158A (en) | 1966-01-17 |
| BE666312A (en) | 1965-11-03 |
| LU49018A1 (en) | 1965-09-08 |
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