GB388663A - Process for the production of dicalcium phosphate - Google Patents
Process for the production of dicalcium phosphateInfo
- Publication number
- GB388663A GB388663A GB21240/32A GB2124032A GB388663A GB 388663 A GB388663 A GB 388663A GB 21240/32 A GB21240/32 A GB 21240/32A GB 2124032 A GB2124032 A GB 2124032A GB 388663 A GB388663 A GB 388663A
- Authority
- GB
- United Kingdom
- Prior art keywords
- phosphoric acid
- phosphate
- dicalcium phosphate
- added
- 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
- C05B11/10—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 orthophosphoric acid
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Fertilizers (AREA)
Abstract
Ground mineral tricalcium phosphate is decomposed with a solution containing phosphoric acid and monocalcium phosphate, say at 50-60 DEG C., and dicalcium phosphate is precipitated from the solution by heating, for example, to the boiling point, the decomposing solution being so concentrated with respect to the acid as to contain free phosphoric acid after the decomposition, and after the precipitation of dicalcium phosphate. The filtrate after separation therefrom, may, after addition of more phosphoric acid, be employed for decomposing fresh mineral phosphate. A mixture of phosphoric and sulphuric acids may be added in lieu of phosphoric acid, in which case a fertilizer containing dicalcium phosphate and calcium sulphate is obtained. In another method, the added phosphoric acid may be wholly replaced by sulphuric acid, this being added to the filtrate from a previous decomposition, which is then used after separation from the precipitated gypsum. Vessels of V2A steel fitted with stirrers and heating apparatus may be employed.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE388663X | 1931-08-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB388663A true GB388663A (en) | 1933-03-02 |
Family
ID=6371305
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB21240/32A Expired GB388663A (en) | 1931-08-31 | 1932-07-27 | Process for the production of dicalcium phosphate |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB388663A (en) |
-
1932
- 1932-07-27 GB GB21240/32A patent/GB388663A/en not_active Expired
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