GB282619A - Method of producing soluble phosphate fertilisers - Google Patents
Method of producing soluble phosphate fertilisersInfo
- Publication number
- GB282619A GB282619A GB10577/27A GB1057727A GB282619A GB 282619 A GB282619 A GB 282619A GB 10577/27 A GB10577/27 A GB 10577/27A GB 1057727 A GB1057727 A GB 1057727A GB 282619 A GB282619 A GB 282619A
- Authority
- GB
- United Kingdom
- Prior art keywords
- phosphate
- sulphate
- ammonium
- calcium
- potassium
- 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)
- Fertilizers (AREA)
Abstract
282,619. Liljenroth, F. G. Dec. 23, 1926, [Convention date]. Manures.-Fertilizers consisting mainly of ammonium phosphate are prepared by leaching calcium phosphate with a mixture of sulphuric acid and a thin solution of ammonium sulphate, the latter being produced from calcium sulphate (separated in the process) by ammonia and carbon dioxide. Molecular proportions are preferably three of phosphate, seven of acid and two of sulphate, but excess ammonium sulphate prepared as above may be used and remains in the product. Potassium salts, e.g. chloride may be added. Specification 275,843 is referred to. The Specification as open to inspection under Sect. 91 (3) (a) comprises also the preparation of soluble phosphates by leaching crude calcium phosphate with an amount of sulphuric acid less than that corresponding to the calcium in the phosphate to give monocalcium phosphate and free phosphoric acid. The lime is simultaneously or subsequently precipitated as sulphate, by alkali or ammonium sulphate, leaving a soluble phosphate in solution. After filtering, the solution is neutralized, preferably with ammonia, and evaporated. If potassium phosphate is desired, caustic potash or a salt of a volatile acid e.g. potassium carbonate or chloride is used as neutralizing agent. Double salts e.g. potassium ammonium phosphate may be prepared by neutralization by mixed salts. Excess sulphuric acid may be used in leaching the crude phosphate, and soluble sulphate and further crude phosphate added later. This subject-matter does not appear in the Specification as accepted.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE282619X | 1926-12-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB282619A true GB282619A (en) | 1928-07-12 |
Family
ID=20307052
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB10577/27A Expired GB282619A (en) | 1926-12-23 | 1927-04-20 | Method of producing soluble phosphate fertilisers |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB282619A (en) |
-
1927
- 1927-04-20 GB GB10577/27A patent/GB282619A/en not_active Expired
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