GB1097315A - Improvements relating to fertilizers - Google Patents
Improvements relating to fertilizersInfo
- Publication number
- GB1097315A GB1097315A GB1348565A GB1348565A GB1097315A GB 1097315 A GB1097315 A GB 1097315A GB 1348565 A GB1348565 A GB 1348565A GB 1348565 A GB1348565 A GB 1348565A GB 1097315 A GB1097315 A GB 1097315A
- Authority
- GB
- United Kingdom
- Prior art keywords
- ammonia
- orthophosphoric acid
- pressure
- acid
- rate
- 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
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B25/00—Phosphorus; Compounds thereof
- C01B25/16—Oxyacids of phosphorus; Salts thereof
- C01B25/26—Phosphates
- C01B25/28—Ammonium phosphates
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B25/00—Phosphorus; Compounds thereof
- C01B25/16—Oxyacids of phosphorus; Salts thereof
- C01B25/26—Phosphates
- C01B25/38—Condensed phosphates
- C01B25/40—Polyphosphates
- C01B25/405—Polyphosphates of ammonium
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Fertilizers (AREA)
Abstract
An ammoniated phosphoric acid suitable for use as a fertilizer is produced by heating an aqueous solution of orthophosphoric acid, e.g. containing 35-65% P2O5 by wt. such as wet process acid containing 45-54% P2O5, to a temperatur of 110-160 DEG C., in a closed vessel to a maximum gauge pressure of 0.35-5.25 kg./cm.2, e.g. 0.7-2.1 kg./sq. cm. at 115-124 DEG C., but not above the boiling point at maximum pressure and then adding anhydrous ammonia at a rate to generate sufficient exothermic heat to raise the pressure above said maximum pressure to boil the solution. The ammonia is preferably added in a weight ratio of N:P2O5 in the range 1:6.4 to 1:16 and at the rate of 0.1-3 moles/min./kg. of orthophosphoric acid. An anti-foaming agent may be added, e.g. 0.2-1.0 parts of sodium dodecyl benzene sulphonate per 500 parts of orthophosphoric acid. The external heating is terminated prior to the addition of ammonia so that all the additional heat required for evaporation of water is supplied by the exothermic heat of reaction.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US35590864A | 1964-03-30 | 1964-03-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1097315A true GB1097315A (en) | 1968-01-03 |
Family
ID=23399296
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1348565A Expired GB1097315A (en) | 1964-03-30 | 1965-03-30 | Improvements relating to fertilizers |
Country Status (2)
| Country | Link |
|---|---|
| BE (1) | BE661787A (en) |
| GB (1) | GB1097315A (en) |
-
0
- BE BE661787D patent/BE661787A/xx unknown
-
1965
- 1965-03-30 GB GB1348565A patent/GB1097315A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| BE661787A (en) |
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