GB810208A - Fertilizers - Google Patents
FertilizersInfo
- Publication number
- GB810208A GB810208A GB2304555A GB2304555A GB810208A GB 810208 A GB810208 A GB 810208A GB 2304555 A GB2304555 A GB 2304555A GB 2304555 A GB2304555 A GB 2304555A GB 810208 A GB810208 A GB 810208A
- Authority
- GB
- United Kingdom
- Prior art keywords
- rock
- hydrogen sulphate
- phosphate
- alkali metal
- 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
- 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
- C05B11/08—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 sulfuric acid
-
- 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 monocalcium phosphate-based fertilizer material is prepared by reacting phosphate rock in the presence of water and/or acid with an alkali metal or ammonium hydrogen sulphate, added as such or formed in situ by reaction between an alkali metal or ammonium chloride and sulphuric acid, the amount of hydrogen sulphate formed or added constituting at least 4.8 mols. per mol. of P2O5 in the rock. If desired, potassium chloride may be reacted with sulphuric acid to form the hydrogen sulphate and the reaction mixture, if desired after removal of HCl, is added to the phosphate to be treated. If water is employed it may constitute between 25 and 200 per cent by weight of the rock; the acids for example sulphuric, nitric or phosphoric acids when used, are preferably concentrated and their presence enables the amount of hydrogen sulphate to be reduced. The reaction may be effected at room or elevated temperature and the final product may be ammoniated and granulated.ALSO:A process for the production of fertilizer material comprises reacting together phosphate rock and an alkali metal or ammonium hydrogen sulphate in the presence of water and/or acid, at least 4,8 mols. of the hydrogen sulphate being used per mol. of P2O5 in the rock. Preferably potassium hydrogen sulphate is used and a suitable material may be produced by reacting potassium chloride with sulphuric acid and removing the hydrogen chloride formed. The phosphate rock which may be finely divided is preferably calciferous rock, e.g. Merocco or Gafsa rock. The process, which results in a product which has a high phosphate availability, converts all or part of the P2O5 present in the rock into monocalcium phosphate. The product may be ammoniated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2304555A GB810208A (en) | 1955-08-10 | 1955-08-10 | Fertilizers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2304555A GB810208A (en) | 1955-08-10 | 1955-08-10 | Fertilizers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB810208A true GB810208A (en) | 1959-03-11 |
Family
ID=10189205
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2304555A Expired GB810208A (en) | 1955-08-10 | 1955-08-10 | Fertilizers |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB810208A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2026397A1 (en) * | 1968-12-18 | 1970-10-18 | Badger Nv | |
| US3718453A (en) * | 1968-09-20 | 1973-02-27 | Goulding W & H Ltd | Production of potassium dihydrogen phosphate fertilizers |
| FR2519959A1 (en) * | 1982-01-15 | 1983-07-22 | Rech Geolog Miniere | Extn. of phosphate(s) from minerals and concentrates - by ammonium hydrogen sulphate treatment and total recovery of sulphate(s) |
| FR2558823A1 (en) * | 1984-01-26 | 1985-08-02 | Petroleo Brasileiro Sa | PROCESS FOR MANUFACTURING FERTILIZERS BY PARTIAL SOLUBILIZATION OF NATURAL PHOSPHATES |
-
1955
- 1955-08-10 GB GB2304555A patent/GB810208A/en not_active Expired
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3718453A (en) * | 1968-09-20 | 1973-02-27 | Goulding W & H Ltd | Production of potassium dihydrogen phosphate fertilizers |
| FR2026397A1 (en) * | 1968-12-18 | 1970-10-18 | Badger Nv | |
| US3653872A (en) * | 1968-12-18 | 1972-04-04 | Badger Nv | Process for the preparation of a nitrophosphate fertilizer |
| FR2519959A1 (en) * | 1982-01-15 | 1983-07-22 | Rech Geolog Miniere | Extn. of phosphate(s) from minerals and concentrates - by ammonium hydrogen sulphate treatment and total recovery of sulphate(s) |
| FR2558823A1 (en) * | 1984-01-26 | 1985-08-02 | Petroleo Brasileiro Sa | PROCESS FOR MANUFACTURING FERTILIZERS BY PARTIAL SOLUBILIZATION OF NATURAL PHOSPHATES |
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