GB662079A - Process for the manufacture of fertilizers - Google Patents
Process for the manufacture of fertilizersInfo
- Publication number
- GB662079A GB662079A GB10509/49A GB1050949A GB662079A GB 662079 A GB662079 A GB 662079A GB 10509/49 A GB10509/49 A GB 10509/49A GB 1050949 A GB1050949 A GB 1050949A GB 662079 A GB662079 A GB 662079A
- Authority
- GB
- United Kingdom
- Prior art keywords
- phosphate
- produce
- ammonium sulphate
- dicalcium
- mixed
- 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
- C05B1/00—Superphosphates, i.e. fertilisers produced by reacting rock or bone phosphates with sulfuric or phosphoric acid in such amounts and concentrations as to yield solid products directly
- C05B1/02—Superphosphates
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Fertilizers (AREA)
Abstract
A dicalcium phosphate containing fertilizer is prepared by attacking crude phosphate with sulphuric acid to produce dicalcium phosphate, followed by nitric acid to produce monocalcium phosphate, adding dry ammonium sulphate and bringing the resultant mass into contact with gaseous ammonia until the pH is from 4-7. The resultant dry product contains in addition to dicalcium phosphate, diammonium phosphate, ammonium sulphate-nitrate and gypsum.ALSO:A mixed fertilizer comprising chiefly dicalcium and diammonium phosphates, ammonium nitrate and gypsum is formed by the treatment of crude phosphate first with sulphuric acid to produce dicalcium phosphate, then with nitric acid to produce mono-calcium phosphate, subsequently with dry ammonium sulphate and finally with gaseous ammonia until a pH of 4-7 is reached, the citrate solubility being thus retained. Superphosphate may be mixed with the acid decomposition mass before the ammonium sulphate treatment; alternatively the latter may be mixed with the nitric acid. The compound fertilizer may contain 12-16 per cent, P2O5 and 7-12 per cent N but preferably the phosphorus pentoxide-nitrogen ratio is unity.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR662079X | 1948-06-04 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB662079A true GB662079A (en) | 1951-11-28 |
Family
ID=9011280
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB10509/49A Expired GB662079A (en) | 1948-06-04 | 1949-04-20 | Process for the manufacture of fertilizers |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB662079A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017151017A1 (en) | 2016-03-03 | 2017-09-08 | Mineral And Chemical Company Eurochem, Joint Stock Company | Phosphorus-potassium-nitrogen-containing npk-fertilizer and a method for the preparation of granulated phosphorus-potassium-nitrogen-containing npk-fertilizer |
| WO2017151015A1 (en) | 2016-03-03 | 2017-09-08 | Mineral And Chemical Company Eurochem, Joint Stock Company | Phosphorus-potassium-nitrogen-containing npk-fertilizer and method for the preparation of granulated phosphorus-potassium-nitrogen-containing npk-fertilizer |
-
1949
- 1949-04-20 GB GB10509/49A patent/GB662079A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017151017A1 (en) | 2016-03-03 | 2017-09-08 | Mineral And Chemical Company Eurochem, Joint Stock Company | Phosphorus-potassium-nitrogen-containing npk-fertilizer and a method for the preparation of granulated phosphorus-potassium-nitrogen-containing npk-fertilizer |
| WO2017151015A1 (en) | 2016-03-03 | 2017-09-08 | Mineral And Chemical Company Eurochem, Joint Stock Company | Phosphorus-potassium-nitrogen-containing npk-fertilizer and method for the preparation of granulated phosphorus-potassium-nitrogen-containing npk-fertilizer |
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