GB1219002A - The production of ammonium phosphates - Google Patents
The production of ammonium phosphatesInfo
- Publication number
- GB1219002A GB1219002A GB1659568A GB1659568A GB1219002A GB 1219002 A GB1219002 A GB 1219002A GB 1659568 A GB1659568 A GB 1659568A GB 1659568 A GB1659568 A GB 1659568A GB 1219002 A GB1219002 A GB 1219002A
- Authority
- GB
- United Kingdom
- Prior art keywords
- mother liquor
- ammonia
- ammonium phosphate
- treated
- sulphate
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Fertilizers (AREA)
Abstract
1,219,002. Ammonium phosphate; ammonium phosphate sulphate; fertilizers. SINCATSOC. INDUSTRIALE CATANESE S.p.A. 5 April, 1968 [7 April, 1967], No. 16595/68. Headings C1A and C1B. Wet process phosphoric acid is treated with a soluble alkali metal compound to precipitate fluosilicic acid, the solution separated, and then treated with ammonia (preferably gaseous), to give a pH of 6À9-7À2, and the insoluble diammonium phosphate separated from the mother liquor, and from the insoluble impurities. This latter separation may be effected by centrifuging, whilst the former may be by decanting. The alkali metal compound used may be the hydroxide. The treatment with ammonia is preferably carried out at 65- 70‹ C. under reduced pressure, e.g. at 160 mm. Hg. The mother liquor (containing mono- and di-ammonium phosphate) may be further treated with ammonia, to a pH of 6À9-8À0, and the mixture granulated and dried, giving pellets of diammonium phosphate. The mother liquor may also be combined with other compounds, e.g. NH 4 NO 3 , (NH 4 ) 2 SO 4 , KCl, K 2 SO 4 , inert material, which may be solids, liquids or as slurries, and the mixtures granulated and dried, to give fertilizers. Alternatively, the mother liquor may be treated, in the presence of recycled, used, mother liquor, with sulphuric acid and ammonia, to a pH 3À9- 4-5, precipitating ammonium phosphate sulphate from a mother liquor, which is recycled. The diammonium phosphate and ammonium phosphate sulphate may also be used in fertilizer compositions.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT791849 | 1967-04-07 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1219002A true GB1219002A (en) | 1971-01-13 |
Family
ID=11125526
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1659568A Expired GB1219002A (en) | 1967-04-07 | 1968-04-05 | The production of ammonium phosphates |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1219002A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110540185A (en) * | 2019-09-17 | 2019-12-06 | 襄阳泽东新能源发展有限公司 | synthesis process of battery-grade iron phosphate |
| CN115849318A (en) * | 2022-12-26 | 2023-03-28 | 施可丰化工股份有限公司 | Production process of full-water-soluble powdery potassium dihydrogen phosphate |
-
1968
- 1968-04-05 GB GB1659568A patent/GB1219002A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110540185A (en) * | 2019-09-17 | 2019-12-06 | 襄阳泽东新能源发展有限公司 | synthesis process of battery-grade iron phosphate |
| CN115849318A (en) * | 2022-12-26 | 2023-03-28 | 施可丰化工股份有限公司 | Production process of full-water-soluble powdery potassium dihydrogen phosphate |
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