GB699398A - Process for the manufacture of a stable complex fertiliser - Google Patents
Process for the manufacture of a stable complex fertiliserInfo
- Publication number
- GB699398A GB699398A GB11860/52A GB1186052A GB699398A GB 699398 A GB699398 A GB 699398A GB 11860/52 A GB11860/52 A GB 11860/52A GB 1186052 A GB1186052 A GB 1186052A GB 699398 A GB699398 A GB 699398A
- Authority
- GB
- United Kingdom
- Prior art keywords
- ammonia
- per cent
- tanks
- kilos
- phosphate
- 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
A fertilizer containing dicalcium phosphate and ammonium nitrate is obtained by attacking natural phosphate with nitric acid and treating the resultant mass with ammonia to bring the pH of the liquid to 3, then with ammonia and sulphuric acid simultaneously to increase the pH up to 5, and finally with ammonia alone until the mass contains no more phosphoric acid soluble in water. The temperature is maintained between 90 and 100 DEG C during the additions. The paste obtained, if desired with added potassium salts, may be dried and granulated. According to an example, 4180 kilos of Moroccan phosphate (34 per cent P2O5) is treated with 7,500 kilos of 52 per cent nitric acid and the product is passed successively through seven tanks with stirrers. Gaseous ammonia is introduced into the first and last tanks and mixture of gaseous ammonia and sulphuric acid introduced into tanks 2 to 6. The product contains 8.25 per cent each of nitrate and ammoniacal nitrogen and 14 per cent of phosphoric acid of which none is water soluble.ALSO:A fertilizer containing dicalcium phosphate and ammonium nitrate is obtained by attacking natural phosphate with nitric acid and treating the resultant mass with ammonia to bring the pH of the liquid to 3, then with ammonia and sulphuric acid simultaneously to increase the pH up to 5 and finally with ammonia alone until the mass contains no more phosphoric acid soluble in water. The temperature is maintained between 90 and 100 DEG C during the additions. The paste obtained, if desired with added potassium salts, may be dried and granulated. According to an example, 4180 kilos of Moroccan phosphate (34 per cent P2O5) is treated with 7500 kilos of 52 per cent nitric acid and the product is passed successively through seven tanks with stirrers. Gaseous ammonia is introduced into the first and last tank and a mixture of gaseous ammonia and sulphuric acid introduced into tanks 2 to 6. The product contains 8.25 per cent each of nitrate and ammonaical nitrogen and 14 per cent phosphoric acid of which none is water-soluble.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR699398X | 1951-08-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB699398A true GB699398A (en) | 1953-11-04 |
Family
ID=9048195
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB11860/52A Expired GB699398A (en) | 1951-08-14 | 1952-05-09 | Process for the manufacture of a stable complex fertiliser |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB699398A (en) |
-
1952
- 1952-05-09 GB GB11860/52A patent/GB699398A/en not_active Expired
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