GB799489A - Improvements in or relating to a method of producing phosphate material - Google Patents
Improvements in or relating to a method of producing phosphate materialInfo
- Publication number
- GB799489A GB799489A GB10466/55A GB1046655A GB799489A GB 799489 A GB799489 A GB 799489A GB 10466/55 A GB10466/55 A GB 10466/55A GB 1046655 A GB1046655 A GB 1046655A GB 799489 A GB799489 A GB 799489A
- Authority
- GB
- United Kingdom
- Prior art keywords
- produce
- treated
- calcium carbonate
- minutes
- concentration
- 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
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23K—FODDER
- A23K20/00—Accessory food factors for animal feeding-stuffs
- A23K20/20—Inorganic substances, e.g. oligoelements
- A23K20/26—Compounds containing phosphorus
Abstract
Substantially nitrate-free acidic phosphorusbearing solutions containing iron and fluorine impurities are treated, when diluted to a P2O5 concentration of 11 to 20 per cent by weight, with an amount of calcium carbonate sufficient to produce a pH of 2.3 to 3.0, over a period of 40 to 120 minutes and the solution is then filtered. Preferably the pH ranges being 2.5 and 2.8; the P2O5 concentration from 12 to 15 per cent and the time 50 to 80 minutes. Such defluorinated acidic phosphate solutions may be treated by the method described in Specification 799,490 with more calcium carbonate to produce dicalcium phosphate.ALSO:Substantially nitrate-free acidic phosphorus-bearing solutions containing iron and fluorine impurities are treated when diluted to a P2O5 concentration of 11 to 20 per cent by weight, with an amount of calcium carbonate sufficient to produce a pH of 2,3 to 3,0, over a period of 40 to 120 minutes and the solution is then filtered. The solutions may be treated with more calcium carbonate to produce dicalcium phosphate, e.g., by the method described in Specification 799,490 to produce an animal feed supplement.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US799489XA | 1954-04-21 | 1954-04-21 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB799489A true GB799489A (en) | 1958-08-06 |
Family
ID=22153844
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB10466/55A Expired GB799489A (en) | 1954-04-21 | 1955-04-12 | Improvements in or relating to a method of producing phosphate material |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB799489A (en) |
-
1955
- 1955-04-12 GB GB10466/55A patent/GB799489A/en not_active Expired
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