GB293942A - Manufacture of dicalcium phosphate and sulphate of ammonia from phosphoric acid or its acid salts, calcium sulphate and ammonia - Google Patents
Manufacture of dicalcium phosphate and sulphate of ammonia from phosphoric acid or its acid salts, calcium sulphate and ammoniaInfo
- Publication number
- GB293942A GB293942A GB1348827A GB1348827A GB293942A GB 293942 A GB293942 A GB 293942A GB 1348827 A GB1348827 A GB 1348827A GB 1348827 A GB1348827 A GB 1348827A GB 293942 A GB293942 A GB 293942A
- Authority
- GB
- United Kingdom
- Prior art keywords
- ammonia
- sulphate
- phosphoric acid
- calcium sulphate
- calcium
- 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
- C05B3/00—Fertilisers based essentially on di-calcium phosphate
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Treatment Of Sludge (AREA)
- Fertilizers (AREA)
Abstract
293,942. Haddan. R., (Stackable, E. R.). May 19, 1927. Manures. - Mixed dicalcium phosphate and ammonium sulphate are produced by treating a mixture of phosphoric acid or its calcium acid salts and calcium sulphate with ammonia, preferably in the presence of a little water. Not more than two molecular weights of ammonia or more than one of calcium sulphate are allawed for each molecular weight of phosphoric acid, to prevent the formation of tricalcium phosphate. Gaseous or liquid anhydrous ammonia, may be led into a mixture of calcium sulphate and calcium acid phosphate, in which the latter bodies are in substantially equal molecular proportions, or into a mixture of phosphoric acid and material containing a large percentage of tricalcium phosphate and sulphuric acid with the same proportions of calcium sulphate and soluble phosphate. Phosphoric acid may absorb ammonia to form solid di-ammonium-hydrogen phosphate which is then mixed with solid calcium sulphate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1348827A GB293942A (en) | 1927-05-19 | 1927-05-19 | Manufacture of dicalcium phosphate and sulphate of ammonia from phosphoric acid or its acid salts, calcium sulphate and ammonia |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1348827A GB293942A (en) | 1927-05-19 | 1927-05-19 | Manufacture of dicalcium phosphate and sulphate of ammonia from phosphoric acid or its acid salts, calcium sulphate and ammonia |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB293942A true GB293942A (en) | 1928-07-19 |
Family
ID=10023859
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1348827A Expired GB293942A (en) | 1927-05-19 | 1927-05-19 | Manufacture of dicalcium phosphate and sulphate of ammonia from phosphoric acid or its acid salts, calcium sulphate and ammonia |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB293942A (en) |
-
1927
- 1927-05-19 GB GB1348827A patent/GB293942A/en not_active Expired
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