ES358302A1 - Fertilizers. - Google Patents
Fertilizers.Info
- Publication number
- ES358302A1 ES358302A1 ES358302A ES358302A ES358302A1 ES 358302 A1 ES358302 A1 ES 358302A1 ES 358302 A ES358302 A ES 358302A ES 358302 A ES358302 A ES 358302A ES 358302 A1 ES358302 A1 ES 358302A1
- Authority
- ES
- Spain
- Prior art keywords
- ammonium phosphate
- phosphoric acid
- weight
- atomic ratio
- zone
- 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
- 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
- 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
- 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)
- Inorganic Chemistry (AREA)
- Fertilizers (AREA)
Abstract
Granular fertilizer containing ammonium phosphate having an N: P atomic ratio of 1À3:1 to 2:1 is produced by reacting phosphoric acid (wet process phosphoric acid containing less than 60% by weight P 2 O 5 ) with NH 3 gas under superatmospheric pressure giving an ammonium phosphate solution containing 4 to 20% by weight of water and having an N: P atomic ratio of 0À8:1 to 1À5:1, expelling the ammonium phosphate solution from the high pressure zone to a zone at ambient pressure, mixing with particulate solids and granulating the resulting mixture, the mixture being treated during granulation with a NH 3 , whereby the N: P atomic ratio of the ammonium phosphate is increased to 1À3:1 to 2:1. The NH 3 gas is reacted preferably, at a superatmospheric pressure of 15 to 50 p.s.i. gauge, and the temperature of the phosphoric acid may be from ambient temperature to 100 C. Sulphuric acid may be used mixed with the phosphoric acid. Flash evaporation occurs on expelling the ammonium phosphate from the high pressure zone into the atmosphere and ammonium phosphate is formed having a water content of 2% to 10% by weight.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB4410967A GB1191497A (en) | 1967-09-28 | 1967-09-28 | Fertilizers. |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ES358302A1 true ES358302A1 (en) | 1970-06-01 |
Family
ID=10431830
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES358302A Expired ES358302A1 (en) | 1967-09-28 | 1968-09-19 | Fertilizers. |
Country Status (5)
| Country | Link |
|---|---|
| AT (1) | AT284172B (en) |
| BE (1) | BE721549A (en) |
| ES (1) | ES358302A1 (en) |
| GB (1) | GB1191497A (en) |
| NL (1) | NL6813614A (en) |
-
1967
- 1967-09-28 GB GB4410967A patent/GB1191497A/en not_active Expired
-
1968
- 1968-09-19 ES ES358302A patent/ES358302A1/en not_active Expired
- 1968-09-24 NL NL6813614A patent/NL6813614A/xx unknown
- 1968-09-27 BE BE721549D patent/BE721549A/xx not_active IP Right Cessation
- 1968-09-27 AT AT943268A patent/AT284172B/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| GB1191497A (en) | 1970-05-13 |
| AT284172B (en) | 1970-09-10 |
| BE721549A (en) | 1969-03-27 |
| NL6813614A (en) | 1969-04-01 |
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