GB698756A - A method of rendering the phosphoric anhydride of rock phosphate soluble in citric acid, and products obtained thereby - Google Patents
A method of rendering the phosphoric anhydride of rock phosphate soluble in citric acid, and products obtained therebyInfo
- Publication number
- GB698756A GB698756A GB10048/51A GB1004851A GB698756A GB 698756 A GB698756 A GB 698756A GB 10048/51 A GB10048/51 A GB 10048/51A GB 1004851 A GB1004851 A GB 1004851A GB 698756 A GB698756 A GB 698756A
- Authority
- GB
- United Kingdom
- Prior art keywords
- product
- per cent
- caustic soda
- rock
- citric 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
- C05B11/16—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 alkaline lyes
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Fertilizers (AREA)
Abstract
Finely ground phosphate rock in admixture with an aqueous solution of caustic soda, say of 40-50 DEG Baume, in an amount greatly in excess, e.g. 100 per cent, of that theoretically necessary for replacing the calcium ion of the rock with sodium ion is heated at or near the boiling point of the mixture, which exceeds 145 DEG C, say 180-200 DEG C, so that the P2O5 becomes citric acid-soluble, at least to the extent of 95 per cent. The product is diluted to bring its temperature below 100 DEG C, say 30 DEG C, the product being caused to pass rapidly through the range 130-145 DEG C, and filtered, and the filter cake is dried and ground for use as fertilizer. The dilute solution of caustic soda is concentrated for re-use.ALSO:Finely ground phosphate rock in admixture with an aqueous solution of caustic soda, say of 40-50 DEG Maume, in an amount greatly in excess, e.g. 100 per cent of that theoretically necessary for replacing the calcium ion of the rock with sodium ion is heated at or near the boiling point of the mixture, which exceeds 145 DEG C, say 180-200 DEG C, so that the P2O5 becomes citric acidsoluble, at least to the extent of 95 per cent. The product is diluted to bring its temperature below 100 DEG C, say 30 DEG C, the product being caused to pass rapidly through the range 130-145 DEG C, and filtered, and the filter cake is dried and ground for use as a fertilizer. The dilute solution of caustic soda is concentrated for re-use.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR698756X | 1950-04-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB698756A true GB698756A (en) | 1953-10-21 |
Family
ID=9047879
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB10048/51A Expired GB698756A (en) | 1950-04-28 | 1951-04-30 | A method of rendering the phosphoric anhydride of rock phosphate soluble in citric acid, and products obtained thereby |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB698756A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115893344A (en) * | 2021-08-11 | 2023-04-04 | 南京铜锌源环保科技有限公司 | Method for preparing zinc phosphate from zinc-containing mineral |
-
1951
- 1951-04-30 GB GB10048/51A patent/GB698756A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115893344A (en) * | 2021-08-11 | 2023-04-04 | 南京铜锌源环保科技有限公司 | Method for preparing zinc phosphate from zinc-containing mineral |
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