GB602268A - An improved process for the decomposition of phosphates - Google Patents
An improved process for the decomposition of phosphatesInfo
- Publication number
- GB602268A GB602268A GB19188/45A GB1918845A GB602268A GB 602268 A GB602268 A GB 602268A GB 19188/45 A GB19188/45 A GB 19188/45A GB 1918845 A GB1918845 A GB 1918845A GB 602268 A GB602268 A GB 602268A
- Authority
- GB
- United Kingdom
- Prior art keywords
- acid
- decomposition
- phosphates
- vat
- 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
- 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)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
Abstract
In the decomposition of calcium phosphates with nitric acid, either alone or in the presence of other acid, e.g. sulphuric acid, to give a mixture of phosphoric acid, calcium nitrate and the calcium salt of the other acid, if present, the reaction is conducted in a medium constituted exclusively by the products resulting from the same treatment applied in the course of a previous reaction to identical materials. The said products should have at least five times the mass of that of the materials reacted. The operation is preferably carried out by adding the acid and phosphate continuously to an overflow vat in about one-fifth of the quantity which the vat is capable of treating. An operating temperature of 40 DEG C., and the use of nitric acid of 70 per cent concentration or more are specified.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR602268X | 1942-11-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB602268A true GB602268A (en) | 1948-05-24 |
Family
ID=8971871
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB19188/45A Expired GB602268A (en) | 1942-11-20 | 1945-07-26 | An improved process for the decomposition of phosphates |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB602268A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE976496C (en) * | 1954-11-07 | 1963-10-03 | Chem Fab Kalk Ges Mit Beschrae | Method and device for digesting rock phosphates, in particular unglued rock phosphates, with mineral acids |
-
1945
- 1945-07-26 GB GB19188/45A patent/GB602268A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE976496C (en) * | 1954-11-07 | 1963-10-03 | Chem Fab Kalk Ges Mit Beschrae | Method and device for digesting rock phosphates, in particular unglued rock phosphates, with mineral acids |
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