GB689751A - Process for the industrial preparation of diammonium phosphate, concentrated calcium phosphates, mixed ammonium and calcium phosphates and alkaline phosphates - Google Patents
Process for the industrial preparation of diammonium phosphate, concentrated calcium phosphates, mixed ammonium and calcium phosphates and alkaline phosphatesInfo
- Publication number
- GB689751A GB689751A GB2119750A GB2119750A GB689751A GB 689751 A GB689751 A GB 689751A GB 2119750 A GB2119750 A GB 2119750A GB 2119750 A GB2119750 A GB 2119750A GB 689751 A GB689751 A GB 689751A
- Authority
- GB
- United Kingdom
- Prior art keywords
- separator
- solution
- phosphate
- treated
- sulphuric 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
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Removal Of Specific Substances (AREA)
Abstract
<PICT:0689751/III/1> The muds resulting from the lixiviation of sulphuric acid treated phosphate, with an aqueous solution of monocalcium phosphate, are suspended in water or a dilute solution of monocalcium phosphate and are again attacked with sulphuric acid to yield further quantities of monocalcium phosphate solution which, separated from the insoluble residue, mainly gypsum, is recycled to the lixiviation step. The monocalcium phosphate solution resulting from the lixiviation may be treated with ammonia or alkali metal salts. In the Figure, superphosphate resulting from sulphuric acid attack on bones or phosphorite passes from hopper 1 to a vessel 2 where it is treated with monocalcium phosphate solution from tank 17 and passed to separator 3. The solid is treated in vessel 4 with sulphuric acid in the presence of dilute monocalcium phosphate solution from tank 17, and the contents of vessel 4 passed to separator 5 from which, after washing, the solid gypsum is separated at 6 whilst the aqueous solution is recycled to tank 17. The rich monocalcium phosphate solution from separator 3 is passed to a saturator 7 where by means of ammonia, the calcium content is precipitated as dicalcium phosphate and separated at 15 by separator 8. It may be further treated with sulphuric acid in vessel 16 to yield monocalcium phosphate. The mother liquor containing mono and diammonium phosphate passes from separator 8 to a tank 9 to which sulphuric acid may be added if it is desired to diminish the diammonium phosphate content, and thence to a steam-heated concentrator 10, saturator 11, crystallizer 12 and separator 13. The solid diammonium phosphate at 14 may be granulated and the mother liquor recycled from separator 8 to tank 9. Alternatively, the solution coming from the separator 3 may be treated with sodium or potassium salts to yield the corresponding phosphates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2119750A GB689751A (en) | 1950-08-28 | 1950-08-28 | Process for the industrial preparation of diammonium phosphate, concentrated calcium phosphates, mixed ammonium and calcium phosphates and alkaline phosphates |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2119750A GB689751A (en) | 1950-08-28 | 1950-08-28 | Process for the industrial preparation of diammonium phosphate, concentrated calcium phosphates, mixed ammonium and calcium phosphates and alkaline phosphates |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB689751A true GB689751A (en) | 1953-04-01 |
Family
ID=10158820
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2119750A Expired GB689751A (en) | 1950-08-28 | 1950-08-28 | Process for the industrial preparation of diammonium phosphate, concentrated calcium phosphates, mixed ammonium and calcium phosphates and alkaline phosphates |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB689751A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2965470A (en) * | 1957-02-05 | 1960-12-20 | Rumianca Spa | Method for manufacturing phosphonitrogenous fertilizers |
| CN107539970A (en) * | 2017-06-08 | 2018-01-05 | 荆门新洋丰中磷肥业有限公司 | A kind of production technology of industrial ammonium phosphate nutrient control |
-
1950
- 1950-08-28 GB GB2119750A patent/GB689751A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2965470A (en) * | 1957-02-05 | 1960-12-20 | Rumianca Spa | Method for manufacturing phosphonitrogenous fertilizers |
| CN107539970A (en) * | 2017-06-08 | 2018-01-05 | 荆门新洋丰中磷肥业有限公司 | A kind of production technology of industrial ammonium phosphate nutrient control |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101337657A (en) | Process for disassembling phosphate ore by mixed acid and coproducing potassium dihydrogen phosphate, hydrogen phosphate and combined fertilizer | |
| US2683075A (en) | Digestion of phosphate rock | |
| US1758448A (en) | Method of producing ammonium phosphate or mixed fertilizers containing ammonium phosphate by leaching of raw phosphate | |
| GB689751A (en) | Process for the industrial preparation of diammonium phosphate, concentrated calcium phosphates, mixed ammonium and calcium phosphates and alkaline phosphates | |
| ES371726A1 (en) | Production of potassium dihydrogen phosphate fertilizers | |
| MacIntire et al. | Reactivity between Dolomite and Super phosphate Components | |
| GB1328357A (en) | Wet process for the manufacture of phosphoric acid and caldium sulphate | |
| US1806029A (en) | Process for working up crude phosphate and potassium salts to mixed fertilizer | |
| US1878997A (en) | Manufacture of phosphates and phosphoric acid | |
| US2036244A (en) | Method of producing phosphates | |
| US1701265A (en) | Recovery of ammonia from dilute solution | |
| US1903684A (en) | Process for the simultaneous production of precipitated dicalcium phosphate and nitrates | |
| US2985527A (en) | Nitric acid process for the production of soluble phosphates | |
| GB356627A (en) | Method of leaching phosphate rock | |
| GB1007898A (en) | A process for the production of phosphoric acid and gypsum | |
| GB1143847A (en) | ||
| SU72405A1 (en) | The method of separation of potassium sulfate, ammonium and sodium | |
| GB727770A (en) | Improvements in digestion of phosphate rock | |
| US3363976A (en) | Selective removal of alumina from phosphate rock | |
| US3755545A (en) | Process for obtaining sodium and ammonium fluoride by the treatment of phosphonitrate solutions | |
| GB970947A (en) | A method for producing chemical fertilizers | |
| GB1153176A (en) | Fertilizers | |
| GB726848A (en) | Process for the production of an ammonium-citrate soluble fertilizer containing mainly secondary calcium phosphate | |
| SU1650576A1 (en) | Method of phosphoric acid manufacture | |
| SU148069A1 (en) | A method of processing mother liquors resulting in the production of chlorine-free concentrated fertilizer |