GB1188321A - Improvements in the Manufacture of Phosphonitrogenous Fertilisers - Google Patents
Improvements in the Manufacture of Phosphonitrogenous FertilisersInfo
- Publication number
- GB1188321A GB1188321A GB3323866A GB3323866A GB1188321A GB 1188321 A GB1188321 A GB 1188321A GB 3323866 A GB3323866 A GB 3323866A GB 3323866 A GB3323866 A GB 3323866A GB 1188321 A GB1188321 A GB 1188321A
- Authority
- GB
- United Kingdom
- Prior art keywords
- phosphate
- ammonium
- caso
- converted
- solution
- 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
- C05B7/00—Fertilisers based essentially on alkali or ammonium orthophosphates
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Re-Forming, After-Treatment, Cutting And Transporting Of Glass Products (AREA)
- Fertilizers (AREA)
Abstract
1,188,321. Ammonium phosphate. POWERGAS CORP. Ltd. 12 July, 1967 [23 July, 1966], No. 33238/66. Heading C1A. In a process for producing phosphonitrogenous fertilizers, phosphate rock is acidulated with nitric acid to form a slurry containing unreacted phosphate rock, this is reacted with sulphuric acid so that substantially all the P 2 O 5 initially present is converted to H 3 PO 4 , CaSO 4 also being formed, adding sufficient (NH 4 ) 2 SO 4 to convert the calcium in solution into CaSO 4 , removing the CaSO 4 from the reaction product, withdrawing the reaction product and neutralizing it with ammonia so that free phosphoric acid is converted to ammonium phosphate. The reactions with sulphuric acid and ammonium sulphate are preferably carried out at 60‹ .to 90‹ C. When the ammonium phosphate is monoammonium phosphate a potassium salt or potassium hydroxide may be added to the product solution to convert all or a part of the mono-ammonium phosphate into diammonium phosphate and.potassium hydrogen phosphate. Some of the calcium sulphate produced may be converted to calcium carbonate by reaction with carbon dioxide and ammonia, the ammonium sulphate solution produced being used in the process. An example of the process is given.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3323866A GB1188321A (en) | 1966-07-23 | 1966-07-23 | Improvements in the Manufacture of Phosphonitrogenous Fertilisers |
| NO16905067A NO117542B (en) | 1966-07-23 | 1967-07-14 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3323866A GB1188321A (en) | 1966-07-23 | 1966-07-23 | Improvements in the Manufacture of Phosphonitrogenous Fertilisers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1188321A true GB1188321A (en) | 1970-04-15 |
Family
ID=10350334
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3323866A Expired GB1188321A (en) | 1966-07-23 | 1966-07-23 | Improvements in the Manufacture of Phosphonitrogenous Fertilisers |
Country Status (2)
| Country | Link |
|---|---|
| GB (1) | GB1188321A (en) |
| NO (1) | NO117542B (en) |
-
1966
- 1966-07-23 GB GB3323866A patent/GB1188321A/en not_active Expired
-
1967
- 1967-07-14 NO NO16905067A patent/NO117542B/no unknown
Also Published As
| Publication number | Publication date |
|---|---|
| NO117542B (en) | 1969-08-25 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PLNP | Patent lapsed through nonpayment of renewal fees |