GB640149A - Process of manufacturing a citrate soluble phosphatic compound, useful as a fertilizer or an ingredient thereof - Google Patents
Process of manufacturing a citrate soluble phosphatic compound, useful as a fertilizer or an ingredient thereofInfo
- Publication number
- GB640149A GB640149A GB32788/46A GB3278846A GB640149A GB 640149 A GB640149 A GB 640149A GB 32788/46 A GB32788/46 A GB 32788/46A GB 3278846 A GB3278846 A GB 3278846A GB 640149 A GB640149 A GB 640149A
- Authority
- GB
- United Kingdom
- Prior art keywords
- acid
- ammonia
- solution
- phosphate
- sulphite
- 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
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05B—PHOSPHATIC FERTILISERS
- C05B11/00—Fertilisers produced by wet-treating or leaching raw materials either with acids in such amounts and concentrations as to yield solutions followed by neutralisation, or with alkaline lyes
- C05B11/04—Fertilisers produced by wet-treating or leaching raw materials either with acids in such amounts and concentrations as to yield solutions followed by neutralisation, or with alkaline lyes using mineral acid
- C05B11/06—Fertilisers produced by wet-treating or leaching raw materials either with acids in such amounts and concentrations as to yield solutions followed by neutralisation, or with alkaline lyes using mineral acid using nitric acid (nitrophosphates)
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Fertilizers (AREA)
Abstract
Citrate soluble phosphatic compounds are made from acid solutions containing calcium and phosphate or hydrophosphate ions by simultaneously introducing the acid solution, ammonia and sulphur dioxide or a sulphite or bisulphite into a reaction vessel, maintaining the liquid reaction mixture at a pH value 6-8 by continuously regulating the flow of the acid solution and ammonia, and withdrawing a precipitate of the citrate soluble phosphatic compound, if desired mixed with the mother liquor, from the reaction vessel. The precipitate may be separated from the solution and dried or the whole may be evaporated to a concentrated mixed fertilizer. The process may be started by introducing the acid solution, ammonia and sulphur dioxide, sulphite or bisulphite into a quantity of an already substantial neutral liquid, e.g. the reaction mixture resulting from a preceding run. The acid phosphate solution may be obtained by dissolving a phosphate in nitric acid. The proportion of sulphite and ammonia may be adjusted to give a pH value of 6 to 8.ALSO:Citrate soluble phosphatic compounds suitable as fertilizers or ingredients thereof are made from acid solutions containing calcium and phosphate or hydrophosphate ions by simultaneously introducing the acid phosphate solution, ammonia and sulphur dioxide or a sulphite or bisulphite into a reaction vessel, maintaining the liquid reaction mixture at a pH value 6-8 by continuously regulating the flow of the acid solution and ammonia and withdrawing a precipitate of the citrate soluble phosphatic compound, if desired mixed with the mother liquor, from the reaction vessel. The precipitate may be separated from the solution and dried or the whole may be evaporated to a concentrated mixed fertilizer. The process may be started by introducing the acid solution, ammonia and sulphur dioxide, sulphite or bisulphite into a quantity of an already substantially neutral liquid, e.g., the reaction mixture resulting from a preceding run. The acid phosphate solution may be obtained by dissolving a phosphate in nitric acid.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL640149X | 1945-06-12 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB640149A true GB640149A (en) | 1950-07-12 |
Family
ID=19789321
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB32788/46A Expired GB640149A (en) | 1945-06-12 | 1946-11-05 | Process of manufacturing a citrate soluble phosphatic compound, useful as a fertilizer or an ingredient thereof |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB640149A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2944882A (en) * | 1956-02-08 | 1960-07-12 | Stamicarbon | Process of producing a phosphate fertilizer |
-
1946
- 1946-11-05 GB GB32788/46A patent/GB640149A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2944882A (en) * | 1956-02-08 | 1960-07-12 | Stamicarbon | Process of producing a phosphate fertilizer |
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