GB396729A - Process for the production of mixed fertilisers - Google Patents
Process for the production of mixed fertilisersInfo
- Publication number
- GB396729A GB396729A GB2805/32A GB280532A GB396729A GB 396729 A GB396729 A GB 396729A GB 2805/32 A GB2805/32 A GB 2805/32A GB 280532 A GB280532 A GB 280532A GB 396729 A GB396729 A GB 396729A
- Authority
- GB
- United Kingdom
- Prior art keywords
- ammonium
- phosphate
- mono
- sulphate
- nitrate
- 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
Fertilizers are prepared by decomposing raw phosphates with that quantity of nitric acid necessary to convert the phosphate into mono-calcium phosphate, treating the mixture with ammonium sulphate, filtering off the precipitated calcium sulphate and undecomposed gangue and evaporating the solution to dryness to form a mixture of ammonium nitrate, mono-ammonium phosphate and residual calcium sulphate. The nitrogen content of the dry residue is then adjusted by dissolving out to any desired extent the ammonium nitrate by means of liquid or gaseous ammonia, and that part of the decomposed matter which contains the di-ammonium phosphate formed is reconverted into mono-ammonium phosphate by the addition of free acid, e.g. nitric, hydrochloric or sulphuric, either with or without the simultaneous addition of other fertilizing salts, e.g. potassium salts such as the chloride, sulphate or nitrate or mixtures thereof, with or without other fertilizing salts. The dry residue may be completely freed from ammonium nitrate by the ammonia, then mixed with the necessary quantity of acid and, if required, potassium salts, and finally mixed with any desired proportion of the ammoniacal solution of ammonium nitrate, the acid being added in sufficient quantity to neutralize the ammonia and to reconvert the di-ammonium phosphate into mono-ammonium phosphate.ALSO:Fertilizers are prepared by decomposing raw phosphates with that quantity of nitric acid necessary to convert the phosphate into mono-calcium phosphate, treating the mixture with ammonium sulphate, filtering off the precipitated calcium sulphate and undecomposed gangue and evaporating the solution to dryness to form a mixture of ammonium nitrate, mono-ammonium phosphate and residual calcium sulphate. The nitrogen content of the dry residue is then adjusted by dissolving out to any desired extent the ammonium nitrate by means of liquid or gaseous ammonia, and that part of the decomposed matter which contains the di-ammonium phosphate formed is reconverted into mono-ammonium phosphate by the addition of free acid, e.g. nitric, hydrochloric or sulphuric, either with or without the simultaneous addition of other fertilizing salts, e.g. potassium salts such as the chloride, sulphate or nitrate or mixtures thereof, with or without other fertilizing salts. The dry residue may be completely freed from ammonium nitrate by the ammonia, then mixed with the necessary quantity of acid and, if required, potassium salts, and finally mixed with any desired proportion of the ammoniacal solution of ammonium nitrate, the acid being added in sufficient quantity to neutralize the ammonia and to reconvert the di-ammonium phosphate into mono-ammonium phosphate.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE396729X | 1931-03-09 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB396729A true GB396729A (en) | 1933-07-31 |
Family
ID=6397086
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2805/32A Expired GB396729A (en) | 1931-03-09 | 1932-01-30 | Process for the production of mixed fertilisers |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB396729A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113860275A (en) * | 2021-08-23 | 2021-12-31 | 安徽六国化工股份有限公司 | Grading utilization device for wet-process phosphoric acid slurry |
-
1932
- 1932-01-30 GB GB2805/32A patent/GB396729A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113860275A (en) * | 2021-08-23 | 2021-12-31 | 安徽六国化工股份有限公司 | Grading utilization device for wet-process phosphoric acid slurry |
| CN113860275B (en) * | 2021-08-23 | 2023-09-15 | 安徽六国化工股份有限公司 | Graded utilization device for wet-process phosphoric acid slurry |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US2738265A (en) | Production of carbonated nitric phosphate fertilizer | |
| US1849704A (en) | Fertilizer manufacture | |
| US1849703A (en) | Fertilizer manufacture | |
| GB396729A (en) | Process for the production of mixed fertilisers | |
| GB396092A (en) | A process for the production of nitrogenous and/or phosphatic mixed fertilisers of desired composition by treatment of raw phosphates with nitric acid | |
| GB413636A (en) | Processes for the production of fertilisers | |
| GB376934A (en) | An improved process for the production of mixed fertilisers | |
| US1761400A (en) | Method of producing a mixed manure containing phosphoric acid and nitrogen | |
| GB339340A (en) | Improvements in and relating to the treatment of phosphate rock and the like | |
| GB306103A (en) | Method of producing fertilizers | |
| ES350603A1 (en) | Process by spraying melts or suspensions with low water comprising fertilizers containing the plant nutrients nitrogen and phosphorus | |
| GB343701A (en) | Method of treating solutions obtained in leaching phosphate rock with nitric acid and ammonium sulphate | |
| GB283558A (en) | Method of treating material containing magnesium | |
| US1965301A (en) | Process for producing mixed fertilizers | |
| GB315485A (en) | Improvements in the manufacture and production of mixed fertilizers | |
| DE632225C (en) | Process for the manufacture of shelf-stable carbonaceous fertilizers | |
| US1909829A (en) | Production of fertilizer salts | |
| GB411575A (en) | Improvements in the manufacture and production of mixed fertilisers | |
| SU23998A1 (en) | The method of obtaining complex phosphorus-containing fertilizers | |
| DE972567C (en) | Process for the production of high percentage mixed fertilizers | |
| GB734887A (en) | Improvements in and relating to the manufacture of phosphated fertilisers and fertilisers obtained thereby | |
| GB356627A (en) | Method of leaching phosphate rock | |
| GB662079A (en) | Process for the manufacture of fertilizers | |
| DE940469C (en) | Process for the production of fertilizers | |
| GB359680A (en) | Improvements in and relating to the treatment of phosphate rock and the manufacture of fertilisers |