GB716437A - Process for the manufacture of phosphate-containing fertilizers - Google Patents
Process for the manufacture of phosphate-containing fertilizersInfo
- Publication number
- GB716437A GB716437A GB26963/51A GB2696351A GB716437A GB 716437 A GB716437 A GB 716437A GB 26963/51 A GB26963/51 A GB 26963/51A GB 2696351 A GB2696351 A GB 2696351A GB 716437 A GB716437 A GB 716437A
- Authority
- GB
- United Kingdom
- Prior art keywords
- employed
- heating
- acid
- per cent
- acids
- 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 consisting mainly of dicalcium phosphate is prepared by treating raw phosphates with a mixture of nitric acid and sulphuric and/or phosphoric acid, followed, after the decomposition has taken place, by heating to a temperature above 100 DEG C. but below 200 DEG C. thereby removing the nitrogen content substantially completely (i.e. below 3 per cent. preferably below 1 per cent.). The reactant acids are preferably employed in amounts proportionate to their equivalent weights and if sulphuric acid be employed, gypsum may be separated before the heating step. The gases resulting from the heating, which may take place under reduced pressure, may be condensed and the nitric oxides present regenerated to nitric acid. The attacking acids may be employed in succession or together and the reaction temperature is preferably 40 DEG C.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT716437X | 1950-11-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB716437A true GB716437A (en) | 1954-10-06 |
Family
ID=3679781
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB26963/51A Expired GB716437A (en) | 1950-11-18 | 1951-11-16 | Process for the manufacture of phosphate-containing fertilizers |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB716437A (en) |
-
1951
- 1951-11-16 GB GB26963/51A patent/GB716437A/en not_active Expired
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB716437A (en) | Process for the manufacture of phosphate-containing fertilizers | |
| US2861878A (en) | Manufacture of complex fertilizers | |
| US1638677A (en) | Process of treating phosphate rock | |
| GB378670A (en) | Improvements in or relating to decomposing raw phosphates | |
| US3389959A (en) | Manufacture of triple superphosphate | |
| GB339340A (en) | Improvements in and relating to the treatment of phosphate rock and the like | |
| GB810208A (en) | Fertilizers | |
| US1662489A (en) | Phosphorus material | |
| GB315485A (en) | Improvements in the manufacture and production of mixed fertilizers | |
| SU491600A1 (en) | The method of obtaining complex fertilizer | |
| GB1100863A (en) | Process for the manufacture of condensed alkali metal phosphates | |
| GB953598A (en) | Process of treating phosphate rock | |
| DE903581C (en) | Process for the production of ammonium citrate-soluble phosphate fertilizers from alumina phosphates | |
| GB662079A (en) | Process for the manufacture of fertilizers | |
| GB445029A (en) | Process for the production of fertilisers | |
| GB639775A (en) | Improved cyclic process for producing dicalcium phosphate by reacting raw phosphate with phosphoric acid | |
| SU594090A1 (en) | Method of preparing double superphosphate | |
| GB692253A (en) | Improvements in or relating to the production of dicalcium phosphate from an acid solution containing fluorine, calcium and phosphoric acid | |
| GB783507A (en) | Improvements in or relating to the manufacture of phospho-nitrogenous fertilizers | |
| GB883242A (en) | Improvements in and relating to the production of mixtures of phosphoric and sulphuric acid | |
| GB301387A (en) | Process for manufacturing a homogeneous mixture of fertilizers | |
| GB719278A (en) | Process for the manufacture of dicalcium phosphate for use as a fertilizer or as an additive to animal feeding stuffs | |
| GB699398A (en) | Process for the manufacture of a stable complex fertiliser | |
| Marshal et al. | Composition and Properties of Superphosphate Conditions Affecting the Distribution of Water, with Special Reference to the Calcium Sulfate Constituent | |
| GB344135A (en) | Improvements in and relating to the treatment of phosphate rock and the like |