GB876563A - Phosphatic fertilizers - Google Patents
Phosphatic fertilizersInfo
- Publication number
- GB876563A GB876563A GB3037156A GB3037156A GB876563A GB 876563 A GB876563 A GB 876563A GB 3037156 A GB3037156 A GB 3037156A GB 3037156 A GB3037156 A GB 3037156A GB 876563 A GB876563 A GB 876563A
- Authority
- GB
- United Kingdom
- Prior art keywords
- rock
- added
- nitric acid
- concentrated
- neutralizer
- 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)
- Fertilizers (AREA)
Abstract
A process for the production of phosphatic fertilizers of high phosphate water solubility comprises reacting phosphate rock with at least 4 makes of phosphoric acid per mole of P2O2 in the rock and at least 4 moles of nitric acid per mole of P2O5 in the rock and neutralising the product so obtained e.g. with ammonia under agitation. The acids may be added to the rock together or sequentially and the reactive time is suitably at least 10 minutes. During neutralization the slurry obtained from the acid attack on the rock is preferably strongly agitated, in which case the mode of adding the neutralizer is arbitrary, but if the agitation is not vigorous the neutralizer should be added batchwise at a temperature less than 60 DEG C. Convenient acids to use in the process are the commercial concentrated grades i.e. 50-70% concentrated phosphoric acid and 40-60% concentrated nitric acid. The nitric acid may be replaced wholly or in part by urea nitrate. Other neutralizing agents than ammonia are potassium hydroxide or potassium carbonate, and other fertilizer components such as ammonium sulphate ammonium nitrate or potassium chloride may be added to the product, which may also be granulated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3037156A GB876563A (en) | 1956-10-05 | 1956-10-05 | Phosphatic fertilizers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3037156A GB876563A (en) | 1956-10-05 | 1956-10-05 | Phosphatic fertilizers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB876563A true GB876563A (en) | 1961-09-06 |
Family
ID=10306612
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3037156A Expired GB876563A (en) | 1956-10-05 | 1956-10-05 | Phosphatic fertilizers |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB876563A (en) |
-
1956
- 1956-10-05 GB GB3037156A patent/GB876563A/en not_active Expired
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