GB339340A - Improvements in and relating to the treatment of phosphate rock and the like - Google Patents
Improvements in and relating to the treatment of phosphate rock and the likeInfo
- Publication number
- GB339340A GB339340A GB26914/29A GB2691429A GB339340A GB 339340 A GB339340 A GB 339340A GB 26914/29 A GB26914/29 A GB 26914/29A GB 2691429 A GB2691429 A GB 2691429A GB 339340 A GB339340 A GB 339340A
- Authority
- GB
- United Kingdom
- Prior art keywords
- mother liquor
- filtration
- ammonia
- solution
- treatment
- 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)
-
- 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
- C01B25/18—Phosphoric acid
- C01B25/22—Preparation by reacting phosphate-containing material with an acid, e.g. wet process
Abstract
339,340. Odda Smelteverk Aktieselskabet, and Johnson, E. Oct. 27, 1928, [Convention. date]. Manures.-Rock phosphate is treated with nitric acid preferably of about 50 per cent strength, of which either an excess or a deficiency may be used, solutions being obtained of such concentration and composition that by cooling, for example to temperatures from about 10‹ C. down to the freezing point of the solution, a substantial part of the calcium nitrate separates as Ca(NO3)2 4H2O, leaving the phosphoric acid and the remainder of the lime in the mother liquor. The rock phosphate may be calcined prior to the treatment. Before separation of Ca(NO3)2 4H2O and while the solution is still warm insoluble residues may be removed by filtration. In this case a smaller quantity of nitric acid may be used initially, a further addition being made after the filtration. The mother liquor may be partially or completely neutralized with ammonia and subsequently dried to obtain a mixed fertilizer. The mother liquor may also be utilized to obtain compound fertilizers, phosphoric acid ammonia or alkali phosphates, chemical salts and the like by known processes. Examples are given.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NO339340X | 1928-10-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB339340A true GB339340A (en) | 1930-12-04 |
Family
ID=19905294
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB26914/29A Expired GB339340A (en) | 1928-10-27 | 1929-09-04 | Improvements in and relating to the treatment of phosphate rock and the like |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB339340A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2609271A (en) * | 1941-09-25 | 1952-09-02 | Directie Staatsmijnen Nl | Production of calcium phosphates and calcium nitrate |
| CN108101602A (en) * | 2017-11-27 | 2018-06-01 | 贵州芭田生态工程有限公司 | A kind of calcium nitrate magnesium compositions and preparation method thereof |
| CN114524684A (en) * | 2022-04-24 | 2022-05-24 | 太原理工大学 | Production process of nitrophosphate fertilizer by freezing method with adjustable nitrogen-phosphorus ratio |
| EP4056542A1 (en) | 2021-03-13 | 2022-09-14 | EuroChem Antwerpen | Odda process for the production of nitrogen-based fertilizers with reduced sand formation |
| EP4056541A1 (en) | 2021-03-13 | 2022-09-14 | EuroChem Antwerpen | Odda process for the production of nitrogen-based fertilizers with reduced sand formation |
-
1929
- 1929-09-04 GB GB26914/29A patent/GB339340A/en not_active Expired
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2609271A (en) * | 1941-09-25 | 1952-09-02 | Directie Staatsmijnen Nl | Production of calcium phosphates and calcium nitrate |
| CN108101602A (en) * | 2017-11-27 | 2018-06-01 | 贵州芭田生态工程有限公司 | A kind of calcium nitrate magnesium compositions and preparation method thereof |
| EP4056542A1 (en) | 2021-03-13 | 2022-09-14 | EuroChem Antwerpen | Odda process for the production of nitrogen-based fertilizers with reduced sand formation |
| EP4056541A1 (en) | 2021-03-13 | 2022-09-14 | EuroChem Antwerpen | Odda process for the production of nitrogen-based fertilizers with reduced sand formation |
| CN114524684A (en) * | 2022-04-24 | 2022-05-24 | 太原理工大学 | Production process of nitrophosphate fertilizer by freezing method with adjustable nitrogen-phosphorus ratio |
| CN114524684B (en) * | 2022-04-24 | 2022-07-19 | 太原理工大学 | Production process of nitrophosphate fertilizer by freezing method with adjustable nitrogen-phosphorus ratio |
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